Title:
INTEGRAL STRAP TISSUE NAPKIN
United States Patent 3759262
Abstract:
This invention teaches a new menstrual napkin modification embodying multiple ply tissue paper sheets disposed coplanarly adjacent and forming a menstrual fluid elongated absorptive section area. One of a pair of integral napkin mounting and securing, multiple ply, tissue paper sheet narrow straps are disposed at each opposed end of the absorptive section area, symmetrically disposed about the napkin elongated length axis. The straps are formed of integral extensions of the coplanarly disposed tissue paper sheets. A reversible menstrual napkin has a pair of equal length integral napkin mounting and securing narrow straps. The reversible menstrual napkin is optimally formed by multiple die cutting the interlocking reversible napkin modifications from a wide web of multiple ply tissue paper sheets.
US Patent References:
Anal napkin
Flanders - April 1956 - 2742042
Manufacture of cellulosic products
Bletzinger et al. - December 1962 - 3067746
Diaper panty
Davis - January 1963 - 3072123
DISPOSABLE PANTY SHIELD
Hendricks - August 1969 - 3463154
SANITARY NAPKIN
Dillon - November 1969 - 3477433
Anal napkin
Flanders - April 1956 - 2742042
Manufacture of cellulosic products
Bletzinger et al. - December 1962 - 3067746
Diaper panty
Davis - January 1963 - 3072123
DISPOSABLE PANTY SHIELD
Hendricks - August 1969 - 3463154
SANITARY NAPKIN
Dillon - November 1969 - 3477433
Application Number:
05/131883
Publication Date:
09/18/1973
Filing Date:
04/07/1971
View Patent Images:
Export Citation:
Primary Class:
Other Classes:
604/375, 604/378
International Classes:
A61F13/15; A61F13/56; A61F13/16
Field of Search:
128/284,286,287,290,296
US Patent References:
| 3532097 | MENSTRUAL NAPKIN | October 1970 | Jones, Sr. |
Primary Examiner:
Rosenbaum, Charles F.
Claims:
I claim
1. A menstrual napkin comprising:
2. In a menstrual napkin of claim 1, the modification wherein at least the one exterior tissue paper ply of each one of said pair of napkin mounting straps, is water resistant, coadjacent to the face of said napkin adapted to receive menstrual fluid.
3. In the menstrual napkin of claim 1, the modification wherein said menstrual fluid impermeable membrane is at least one ply of air porous, menstrual fluid resistant, creped tissue paper sheet.
4. In the menstrual napkin of claim 1, the modification wherein all of the multiple ply crepe tissue sheet of each one of said pair of napkin mounting straps have cohesively embossed areas, forming a pair of separately embossed mounting straps.
5. A menstrual napkin comprising:
6. In the menstrual napkin of claim 5, the modification wherein said multiple ply of tissue paper sheets in said pair of napkin mounting straps are secured together with at least one adhesive plug bonding means in each said strap.
7. In the menstrual napkin modification of claim 5 the further modification wherein said multiple ply tissue paper sheets are creped.
8. In a menstrual napkin of claim 5, the modification wherein at least the one exterior tissue paper ply of each one of said pair of napkin mounting straps is water resistant, coadjacent to said first absorptive section area.
9. In the menstrual napkin modification of claim 5, the further modification wherein a menstrual fluid impermeable membrane is coextensively adjacently secured to a first face of said second absorptive section area and the coextensive first faces of said pair of napkin mounting straps which are opposed to the second face of said absorptive section to which said first absorptive section is attached.
10. In the menstrual napkin modification of claim 9, the further modification wherein said menstrual fluid impermeable membrane is a plurality of air porous, menstrual fluid resistant, creped tissue paper sheets.
11. A menstrual napkin having reversible mounting straps comprising:
12. In the menstrual napkin of claim 11, the modification wherein said multiple ply of tissue paper sheets are secured together with at least a pair of adhesive plug bonding means.
13. In the menstrual napkin of claim 11, the modification wherein a menstrual fluid impermeable membrane is coextensively adjacently secured to one face of said absorptive section area and the coextensive faces of said pair of napkin mounting straps.
14. In the menstrual napkin of claim 13, the modification wherein at least one exterior tissue paper ply forming each one of said pair of napkin mounting straps, opposed to the faces of said straps secured to a menstrual fluid impermeable membrane, is water resistant.
15. In the menstrual napkin of claim 13, the modification wherein said menstrual fluid impermeable membrane is a plurality of air porous, menstrual fluid resistant, creped tissue paper sheets.
16. In a menstrual napkin having
17. In a menstrual napkin having
1. A menstrual napkin comprising:
2. In a menstrual napkin of claim 1, the modification wherein at least the one exterior tissue paper ply of each one of said pair of napkin mounting straps, is water resistant, coadjacent to the face of said napkin adapted to receive menstrual fluid.
3. In the menstrual napkin of claim 1, the modification wherein said menstrual fluid impermeable membrane is at least one ply of air porous, menstrual fluid resistant, creped tissue paper sheet.
4. In the menstrual napkin of claim 1, the modification wherein all of the multiple ply crepe tissue sheet of each one of said pair of napkin mounting straps have cohesively embossed areas, forming a pair of separately embossed mounting straps.
5. A menstrual napkin comprising:
6. In the menstrual napkin of claim 5, the modification wherein said multiple ply of tissue paper sheets in said pair of napkin mounting straps are secured together with at least one adhesive plug bonding means in each said strap.
7. In the menstrual napkin modification of claim 5 the further modification wherein said multiple ply tissue paper sheets are creped.
8. In a menstrual napkin of claim 5, the modification wherein at least the one exterior tissue paper ply of each one of said pair of napkin mounting straps is water resistant, coadjacent to said first absorptive section area.
9. In the menstrual napkin modification of claim 5, the further modification wherein a menstrual fluid impermeable membrane is coextensively adjacently secured to a first face of said second absorptive section area and the coextensive first faces of said pair of napkin mounting straps which are opposed to the second face of said absorptive section to which said first absorptive section is attached.
10. In the menstrual napkin modification of claim 9, the further modification wherein said menstrual fluid impermeable membrane is a plurality of air porous, menstrual fluid resistant, creped tissue paper sheets.
11. A menstrual napkin having reversible mounting straps comprising:
12. In the menstrual napkin of claim 11, the modification wherein said multiple ply of tissue paper sheets are secured together with at least a pair of adhesive plug bonding means.
13. In the menstrual napkin of claim 11, the modification wherein a menstrual fluid impermeable membrane is coextensively adjacently secured to one face of said absorptive section area and the coextensive faces of said pair of napkin mounting straps.
14. In the menstrual napkin of claim 13, the modification wherein at least one exterior tissue paper ply forming each one of said pair of napkin mounting straps, opposed to the faces of said straps secured to a menstrual fluid impermeable membrane, is water resistant.
15. In the menstrual napkin of claim 13, the modification wherein said menstrual fluid impermeable membrane is a plurality of air porous, menstrual fluid resistant, creped tissue paper sheets.
16. In a menstrual napkin having
17. In a menstrual napkin having
Description:
BACKGROUND OF THE INVENTION
Menstrual fluid is commonly absorbed by commercial sanitary napkins having a relatively thick mass (about 3/4 inch thick) of low density macerated, bleached wood pulp. The napkin absorptive section is typically 81/2 inch long × 21/2 inch wide, and the low density wood pulp absorptive section is held together as a coherent mass by a shaping, exterior layer of an open network gauze or scrim material. The gauze or scrim material is conventionally formed into napkin mounting and securing strap extensions at the elongated napkin pad ends, forming strap securing means for attaching the napkin to a conventional sanitary napkin support belt.
This invention provides a sanitary napkin modification with a pair of integral mounting straps which are easily secured to a napkin support belt.
CROSS REFERENCES
This invention relates to my copending allowed U.S. Pat. application entitled RESERVOIR MENSTRUAL NAPKIN, Ser. No. 742,922, filed July 5, 1968 now U.S. Pat. No. 3,593,717; and to my U.S. Pat. application filed this date titled MENSTRUAL NAPKIN SUPPORT WAIST BELT.
SUMMARY OF THE INVENTION
This improvement in menstrual napkins modifies my earlier teaching of a multiplicity of tissue paper sheet layers disposed coplanarly and bonded by a plurality of adhesive plug bonding means. I now teach a new menstrual napkin modification embodying multiple ply tissue paper sheets disposed coplanarly adjacent, forming a menstrual fluid elongated absorptive section area. A pair of integral napkin mounting and securing multiple ply tissue paper sheet straps are disposed coaxially, one at each opposed end of the elongated absorptive section area, symmetrically disposed about the napkin length axis. Each ply of tissue paper sheet disposed in the menstrual fluid absorptive section is extended to form a ply of the tissue paper sheet strap. The multiple ply tissue paper sheets forming a menstrual napkin modification are secured together by a plurality of adhesive plug bonding means as taught in my U.S. Pat. application, Ser. No. 742,922, and in my U.S. Pat. No. 3,532,097. Further, the thin flexible, fluid impermeable membrane required to be disposed coplanarly adjacent to one face of the menstrual fluid absorptive section and the pair of oppositely extending integral mounting and securing straps, can be one or more ply of a menstrual fluid resistant, crepe tissue sheet. The fluid resistant, crepe tissue sheet has substantial air porosity, yet the cell structure of the pores are sufficiently small to prevent ready penetration of even a single layer of the fluid resistant tissue sheet by menstrual fluid, or urine. The pair of integral napkin mounting and securing multiple ply tissue paper sheet straps can be equal in length. The equal strap length napkin modification provides a reversible napkin, in comparison to the conventional sanitary napkin which has a short front strap and a long rear strap. The reversible napkin is particularly suitable for use with the new MENSTRUAL NAPKIN SUPPORT WAIST BELT reference above. The reversible menstrual napkin modification can be manufactured in a continuous multiple die cutting operation with a minimum amount of waste raw material, from a wide web of multiple ply tissue paper sheets disposed coplanarly adjacent. The napkins are cut in an interlocking pattern arrangement.
Included in the objects of my invention are:
To provide a new menstrual napkin modification embodying multiple ply tissue paper sheets disposed coplanarly adjacent forming an elongated menstrual fluid absorptive section area, and having a pair of integral napkin mounting and securing tissue paper straps.
To provide a new menstrual napkin modification embodying multiple ply tissue paper sheets forming an elongated menstrual fluid absorptive section area and integral napkin mounting and securing tissue paper sheet equal length straps from each ply of tissue paper sheet.
To provide a manufacturing process for an improved menstrual napkin modification having a pair of integral napkin mounting and securing tissue paper sheet straps integral with a menstrual fluid absorptive section area.
To provide a menstrual napkin modification embodying multiple ply tissue paper sheets having integral mounting and securing tissue paper sheet straps suitable for cooperative mounting on a commercial conventional sanitary napkin support belt.
To provide a menstrual napkin modification having a pair of integral napkin mounting and securing tissue paper sheet straps, and forming a reservoir type menstrual napkin.
Other objects and advantages of this invention are taught in the following description and claims.
BRIEF DESCRIPTION OF THE DRAWING
The description of this invention is to be read in conjunction with the following drawing in which:
FIG. 1 is a plan view of one modification of the improvement in menstrual napkins.
FIG. 2 is an elevation sectional view through 2--2 of FIG. 1.
FIG. 3 is an elevation sectional view through 3--3 of FIG. 1.
FIG. 4 is a plan view of another modification of the improvement in menstrual napkins.
FIG. 5 is an elevation sectional view through 5--5 of FIG. 4.
FIG. 6 is an elevational sectional view through 6--6 of FIG. 4.
FIG. 7 illustrates in plan view the pattern of the reversible menstrual napkin, further illustrating the multiple pattern suitable for continuously cutting a maximum number of napkins with a minimum amount of raw material loss.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1 in detail, a menstrual integral strap tissue napkin 1 is shown in plan view, having a menstrual fluid absorptive section area 2 with an integral front strap 3 and an integral rear strap 4. The elongated absorptive section area 2, the integral front strap 3 and the integral rear strap 4 are together formed of multiple ply tissue paper sheets disposed coplanarly adjacent as taught in my Pat. application, Ser. No. 742,922. The multiple ply of tissue paper sheets are secured together by the plurality of adhesive plug bonding means 5, 6, 7, 8, 9.
The absorptive section area 3 has a length 10 (A L ) and width 11 (Aw). The length 10 and the width 11 being those values required for the optimal use of the menstrual fluid absorptive section area 2, and usually 10 is 21/2-31/2 times the value of 11. The front securing strap 3 of the napkin is formed of the coextensive multiple ply of tissue paper sheets also forming the absorptive section area 2. The front strap 3 has a length 12 (S LF ) and a width 13 (S WF ). The rear strap 4 is also formed of the same multiple ply of tissue paper sheets extending coextensively from the absorptive section area 2. The rear strap 4 has a length 14 (S LR ) and a width 15 (S WR ). The multiplicity of adhesive plug bonding means 5, 6, 7, 8, 9 extend through and secure together the multiple ply of tissue paper sheets forming the integral strap menstrual napkin 1.
Further construction details of the menstrual napkin 1 are shown in sectional view in FIG. 2, along the napkin elongated length axis 2--2 of FIG. 1. The napkin 1 has the menstrual fluid absorptive section area 2, the front strap 3 and the rear strap 4, all formed of coextensive, coplanarly adjacently disposed tissue paper sheets 20. The plural adhesive plug bonding means 5, 6, 7, 8, 9 are shown to extend completely through the multiple ply, including the plural ply of menstrual fluid resistant, porous tissue paper sheets 21 forming the menstrual fluid impermeable membrane.
The multiple ply of tissue paper sheet are preferably creped for best results, providing a moderate amount of stretching during use of the napkin. Likewise, it is important that the plural ply of menstrual fluid resistant tissue paper sheets used in the menstrual fluid impermeable membrane 21 be creped to provide for the moderate amount of stretch required during use of the menstrual napkin. Typically, the multiple ply of tissue paper sheet 20 may range from 18 to 26 sheets of 10 pound weight crepe tissue stock. The plural sheets of fluid resistant porous creped tissue stock 21 can range from 2-4 in number, or the like, of 10-14 pound tissue stock. The crepe stretch in the machine direction can range from 16 to 28 percent, typically.
FIG. 3 illustrates in further cross sectional elevation view through 3--3 of FIG. 1 that the absorptive section area 2 has the multiple ply of tissue paper sheet 20 disposed coplanarly adjacent to the plural ply of fluid re-sistant, porous tissue paper sheets 21. The cross sectional structure illustrated in FIG. 3 for the fluid absorptive section area 2 is also equivalent in structure to the cross section of the front strap 3 and the rear strap 4.
Referring to FIGS. 4, 5 and 6 in detail, FIG. 4 illustrates in plan view the improvement in integral strap tissue napkin incorporating the reservoir napkin modification of my earlier allowed U.S. Pat. application, Ser. No. 742,922. The reservoir integral strap napkin 40 has a reservoir fluid absorptive section area 41, rectangular in plan area, and an integral front strap 42 and integral rear strap 43. The multiple apertures 44 taught in the above listed patent application are shown disposed normally to the exterior surface 45 of the multiple ply of tissue sheets.
FIG. 5 illustrates a further cross sectional view through 5--5 of FIG. 4, in which the napkin 40 is shown to have multiple reservoir apertures 44 disposed normally to the exterior surface 45 of the multiple ply of tissue sheets of the first absorptive section area 46. The multiple apertures 44 do not penetrate into the multiple ply which form the coextensive second absorptive section 47, the front strap 42, and the rear strap 43. The plural ply of menstrual fluid resistant, air porous, crepe tissue sheet membrane 48 coextensively underlie coadjacent to the multiple ply tissue sheets of the second absorptive section 47, and the straps 42 and 43.
As the collective FIGS. 4, 5, 6 together illustrate, the first absorptive section area 46 having the reservoir apertures 44, is coplanarly coextensive in area with the second menstrual fluid absorptive section area 47. The second section area 47 is functionally similar in geometry and absorptive function with absorptive section area 2 of FIGS. 1, 2 and 3. Typically, the multiple ply of tissue paper sheets forming the front strap 42, the rear strap 43 and the coextensive secondary absorptive section area 47 of FIG. 5 can typically range in the number of single ply of 10 lb. weight crepe tissue stock from 18 to 28, or the like. The multiple ply of tissue stock in the primary absorptive section 45 can range as taught in my Pat. application Ser. No. 742,922. The short front strap 42 has a length, S LF = 53, and a width, S WF = 54. The primary absorptive section area 46 has a length, A L = 55, and a width, A W = 56. The longer rear strap has a length, S LR = 57, and a width, S WR = 58.
Preferably, the front straps 3 and 42 as well as the rear straps 4 and 43, of napkins 1 and 40 have strap widths, S WF and S WR respectively, equal to one-third the width of the menstrual fluid absorptive sections 2 and 41, represented by A W . Typically, the front strap lengths 12 53, represented by the generic terms S LF , has a typical length ranging from 4 to 51/2 inches. The rear straps 4 and 43 have the strap lengths 14 and 57 respectively, and are represented generically by the term S LR . S LR has a length typically ranging from 6 to 8 inches. The above typical napkin measurements are generally required to fit a wide range of female sizes ranging from dress size 7 to dress size 45 or the like, as listed by the Department of Commerce standard in Report CS215-58 on female body measurements.
The strap 42 is shown in FIG. 4 to have the embossed area 59 disposed across the width 54 for a typical length of one inch. A further narrow embossed area 60 is disposed along the remaining length of strap 42 on the napkin length axis, as is shown in plan view in FIG. 4, and in elevational sectional view in FIG. 6. The embossed areas 59 and 60 form compressed, multiple layers of thin tissue sheets which adhere to each other, as a result of ironing out the crepe in the tissue sheets. Typically, the 24 single ply of creped tissue in a strap 92, or the like, has an approximate thickness of one-sixteenth inch in an uncompressed condition, but the same tissues are compressed to about 0.004 inch thickness when embossed. The embossed area 59 provides a strap tip easily inserted in a sanitary napkin support belt. The embossed area 60 provides a securing means for the multiple ply of strap tissue sheets, while also providing a fluffy, soft napkin strap which will not irritate the user's skin in use. The embossed area 61 on the tip of scrap 43, and the embossed area 62 on the napkin length axis, are equivalent to 59 and 60 respectively.
FIG. 7 illustrates in plan view a further modification of this invention. Multiple reversible menstrual napkins are shown in an interlocking napkin pattern planar arrangement suitable for high speed die cutting production of the napkin product. The planar view of FIG. 7 is a partial showing of a wide web width which can typically represent twelve reversible napkins of the plan view 70 or the like, disposed side by side on the web width. The reversible napkin 70 illustrated in full plan view is typical of the napkins 70 through 75 shown in full plan, as well as the partial plan views of the reversible napkins designated by 76 through 87, with partial plan views of the straps only of reversible napkins 88 through 93. The napkins 70-93 are all fully equivalent in planar area, shape and size. The length axes of napkins 70-93 are disposed colinearly parallel with the machine direction of the multiple ply of crepe tissue paper sheets, from which the absorptive section area 2 and 47 and the straps of the general type of 3, 4, 42, 43 and the like are formed. The reversible integral strap tissue napkins 70-93 have the two strap lengths front and rear, S L , equal in value, and also equal to the length of the elongated absorptive section area A L . The reversible integral strap tissue napkins 70-93 have the front and rear strap widths equal in value to S W , which is also equal to one-third (1/3) of the value of the width of the absorptive section area, A W . Thus
A L = S L
and
A W = 3 S W
The length axis of the reversible napkin is disposed to coincide with the machine direction of the web of crepe tissue paper sheets, in order to provide a maximum operational strength for the multiple plies of crepe tissue paper stock embodied in the napkins. The machine direction of a web of tissue paper generally represents the maximum strength for crepe tissue paper stock.
For maximum utilization of multiple plies of crepe paper tissue, the single reversible napkin configuration 70 of FIG. 7 requires that two menstrual fluid absorptive section areas, having equal lengths A L , have coadjacently contiguously disposed between them a pair of oppositely extensive securing straps, having equal strap lengths, S L . Thus, A L = S L . Thus the pair of mounting and securing straps disposed between the pair of menstrual fluid absorptive body section areas are each oppositely attached at one end of each strap to a separate absorptive body section area. One of the pair of straps coextensively joins one end width of one absorptive section area and the second of the pair of straps coextensively joins a geometrically opposed end width of a second absorptive section area.
The reversible napkin planar configuration 70 of FIG. 7, or the configuration of napkin 1 of FIG. 1, or the like, can be formed by die cutting. The reversible napkin configuration 70-93 and the like is particularly adapted to rapidly continuously multiple cutting the napkins from a wide web of multiple plies of crepe tissue paper stock. The apertures required for the adhesive plug bonding means 5, 6, 7, 8, 9 and the like are punched simultaneously with the die cutting of the planar napkin outline itself. The primary absorptive section area 46 of FIG. 4 may be combined with the secondary absorptive section configuration underlying, according to the teaching of the patent application U.S. Ser. No. 742,922.
A further improvement in the integral strap tissue napkin 1, 40, 70 or the like, can be made by printing the typical strap areas 88-93, which are plan views of partial straps, together with the total strap areas designated as 94-106 with a moisture proofing composition suitable for treating paper, thus rendering the paper resistant to the penetration of perspiration, menstrual fluid and the like, without destroying the creped paper's air porosity. Thus, the creped tissue paper which comprises the planar top plural ply, numbering from 1 to 4, or the like, of the multiple plies of crepe tissue paper sheet forming the strap configuration, can be fully printed in the strap geometrical outline on an ordinary web feed printing press, or the like, utilizing water resistant, solvent based compositions as printing ink. The strap geometrical outline can be printed in color by adding a suitable paper dye. The printing can be done complete with register marks for later high speed die cutting, utilizing a photoelectric eye monitoring system, or the like. Thus in application, the top several plies, 1-4 or the like, of the multiple plies of crepe tissue paper stock which comprise the web can be fed in the machine direction for die cutting as illustrated in FIG. 7. The napkins can be die cut according to the printed strap colors, utilizing a register mark if required for accurate die cutting. The integral strap tissue plies which are thus protected retain their wet strength in the presence of body perspiration, menstrual fluid, and the like.
The menstrual napkin modifications of this invention can be manufactured at high production speed on comparatively wide web paper processing machinery by rotary or reciprocating die cutting devices. The teachings of my earlier patent applications, Ser. Nos. 67,593 and 742,922 and U.S. Pat. No. 3,532,097 are relied upon.
Further, by embossing the integral straps 3, 4, 42, 43 and the like during the die cutting operation, it is possible to cohere the strap multiple tissue ply together. The embossing is preferably formed on the terminal tips of the straps, and as a strip along the axis of symmetry of the straps. The embossing should be geometrically disposed on the straps in positions which avoid stiffening the straps at the strap edges adjacent to the wearer's skin, in order to avoid irritating the wearer. The embossing can replace some of the adhesive plug bonding means 5, 6, 7, 8, 9 or the like.
Many modifications and variations of my improvements in integral strap tissue napkins and process for their manufacture may be made within the light of my teaching. It is therefore understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.
Menstrual fluid is commonly absorbed by commercial sanitary napkins having a relatively thick mass (about 3/4 inch thick) of low density macerated, bleached wood pulp. The napkin absorptive section is typically 81/2 inch long × 21/2 inch wide, and the low density wood pulp absorptive section is held together as a coherent mass by a shaping, exterior layer of an open network gauze or scrim material. The gauze or scrim material is conventionally formed into napkin mounting and securing strap extensions at the elongated napkin pad ends, forming strap securing means for attaching the napkin to a conventional sanitary napkin support belt.
This invention provides a sanitary napkin modification with a pair of integral mounting straps which are easily secured to a napkin support belt.
CROSS REFERENCES
This invention relates to my copending allowed U.S. Pat. application entitled RESERVOIR MENSTRUAL NAPKIN, Ser. No. 742,922, filed July 5, 1968 now U.S. Pat. No. 3,593,717; and to my U.S. Pat. application filed this date titled MENSTRUAL NAPKIN SUPPORT WAIST BELT.
SUMMARY OF THE INVENTION
This improvement in menstrual napkins modifies my earlier teaching of a multiplicity of tissue paper sheet layers disposed coplanarly and bonded by a plurality of adhesive plug bonding means. I now teach a new menstrual napkin modification embodying multiple ply tissue paper sheets disposed coplanarly adjacent, forming a menstrual fluid elongated absorptive section area. A pair of integral napkin mounting and securing multiple ply tissue paper sheet straps are disposed coaxially, one at each opposed end of the elongated absorptive section area, symmetrically disposed about the napkin length axis. Each ply of tissue paper sheet disposed in the menstrual fluid absorptive section is extended to form a ply of the tissue paper sheet strap. The multiple ply tissue paper sheets forming a menstrual napkin modification are secured together by a plurality of adhesive plug bonding means as taught in my U.S. Pat. application, Ser. No. 742,922, and in my U.S. Pat. No. 3,532,097. Further, the thin flexible, fluid impermeable membrane required to be disposed coplanarly adjacent to one face of the menstrual fluid absorptive section and the pair of oppositely extending integral mounting and securing straps, can be one or more ply of a menstrual fluid resistant, crepe tissue sheet. The fluid resistant, crepe tissue sheet has substantial air porosity, yet the cell structure of the pores are sufficiently small to prevent ready penetration of even a single layer of the fluid resistant tissue sheet by menstrual fluid, or urine. The pair of integral napkin mounting and securing multiple ply tissue paper sheet straps can be equal in length. The equal strap length napkin modification provides a reversible napkin, in comparison to the conventional sanitary napkin which has a short front strap and a long rear strap. The reversible napkin is particularly suitable for use with the new MENSTRUAL NAPKIN SUPPORT WAIST BELT reference above. The reversible menstrual napkin modification can be manufactured in a continuous multiple die cutting operation with a minimum amount of waste raw material, from a wide web of multiple ply tissue paper sheets disposed coplanarly adjacent. The napkins are cut in an interlocking pattern arrangement.
Included in the objects of my invention are:
To provide a new menstrual napkin modification embodying multiple ply tissue paper sheets disposed coplanarly adjacent forming an elongated menstrual fluid absorptive section area, and having a pair of integral napkin mounting and securing tissue paper straps.
To provide a new menstrual napkin modification embodying multiple ply tissue paper sheets forming an elongated menstrual fluid absorptive section area and integral napkin mounting and securing tissue paper sheet equal length straps from each ply of tissue paper sheet.
To provide a manufacturing process for an improved menstrual napkin modification having a pair of integral napkin mounting and securing tissue paper sheet straps integral with a menstrual fluid absorptive section area.
To provide a menstrual napkin modification embodying multiple ply tissue paper sheets having integral mounting and securing tissue paper sheet straps suitable for cooperative mounting on a commercial conventional sanitary napkin support belt.
To provide a menstrual napkin modification having a pair of integral napkin mounting and securing tissue paper sheet straps, and forming a reservoir type menstrual napkin.
Other objects and advantages of this invention are taught in the following description and claims.
BRIEF DESCRIPTION OF THE DRAWING
The description of this invention is to be read in conjunction with the following drawing in which:
FIG. 1 is a plan view of one modification of the improvement in menstrual napkins.
FIG. 2 is an elevation sectional view through 2--2 of FIG. 1.
FIG. 3 is an elevation sectional view through 3--3 of FIG. 1.
FIG. 4 is a plan view of another modification of the improvement in menstrual napkins.
FIG. 5 is an elevation sectional view through 5--5 of FIG. 4.
FIG. 6 is an elevational sectional view through 6--6 of FIG. 4.
FIG. 7 illustrates in plan view the pattern of the reversible menstrual napkin, further illustrating the multiple pattern suitable for continuously cutting a maximum number of napkins with a minimum amount of raw material loss.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1 in detail, a menstrual integral strap tissue napkin 1 is shown in plan view, having a menstrual fluid absorptive section area 2 with an integral front strap 3 and an integral rear strap 4. The elongated absorptive section area 2, the integral front strap 3 and the integral rear strap 4 are together formed of multiple ply tissue paper sheets disposed coplanarly adjacent as taught in my Pat. application, Ser. No. 742,922. The multiple ply of tissue paper sheets are secured together by the plurality of adhesive plug bonding means 5, 6, 7, 8, 9.
The absorptive section area 3 has a length 10 (A L ) and width 11 (Aw). The length 10 and the width 11 being those values required for the optimal use of the menstrual fluid absorptive section area 2, and usually 10 is 21/2-31/2 times the value of 11. The front securing strap 3 of the napkin is formed of the coextensive multiple ply of tissue paper sheets also forming the absorptive section area 2. The front strap 3 has a length 12 (S LF ) and a width 13 (S WF ). The rear strap 4 is also formed of the same multiple ply of tissue paper sheets extending coextensively from the absorptive section area 2. The rear strap 4 has a length 14 (S LR ) and a width 15 (S WR ). The multiplicity of adhesive plug bonding means 5, 6, 7, 8, 9 extend through and secure together the multiple ply of tissue paper sheets forming the integral strap menstrual napkin 1.
Further construction details of the menstrual napkin 1 are shown in sectional view in FIG. 2, along the napkin elongated length axis 2--2 of FIG. 1. The napkin 1 has the menstrual fluid absorptive section area 2, the front strap 3 and the rear strap 4, all formed of coextensive, coplanarly adjacently disposed tissue paper sheets 20. The plural adhesive plug bonding means 5, 6, 7, 8, 9 are shown to extend completely through the multiple ply, including the plural ply of menstrual fluid resistant, porous tissue paper sheets 21 forming the menstrual fluid impermeable membrane.
The multiple ply of tissue paper sheet are preferably creped for best results, providing a moderate amount of stretching during use of the napkin. Likewise, it is important that the plural ply of menstrual fluid resistant tissue paper sheets used in the menstrual fluid impermeable membrane 21 be creped to provide for the moderate amount of stretch required during use of the menstrual napkin. Typically, the multiple ply of tissue paper sheet 20 may range from 18 to 26 sheets of 10 pound weight crepe tissue stock. The plural sheets of fluid resistant porous creped tissue stock 21 can range from 2-4 in number, or the like, of 10-14 pound tissue stock. The crepe stretch in the machine direction can range from 16 to 28 percent, typically.
FIG. 3 illustrates in further cross sectional elevation view through 3--3 of FIG. 1 that the absorptive section area 2 has the multiple ply of tissue paper sheet 20 disposed coplanarly adjacent to the plural ply of fluid re-sistant, porous tissue paper sheets 21. The cross sectional structure illustrated in FIG. 3 for the fluid absorptive section area 2 is also equivalent in structure to the cross section of the front strap 3 and the rear strap 4.
Referring to FIGS. 4, 5 and 6 in detail, FIG. 4 illustrates in plan view the improvement in integral strap tissue napkin incorporating the reservoir napkin modification of my earlier allowed U.S. Pat. application, Ser. No. 742,922. The reservoir integral strap napkin 40 has a reservoir fluid absorptive section area 41, rectangular in plan area, and an integral front strap 42 and integral rear strap 43. The multiple apertures 44 taught in the above listed patent application are shown disposed normally to the exterior surface 45 of the multiple ply of tissue sheets.
FIG. 5 illustrates a further cross sectional view through 5--5 of FIG. 4, in which the napkin 40 is shown to have multiple reservoir apertures 44 disposed normally to the exterior surface 45 of the multiple ply of tissue sheets of the first absorptive section area 46. The multiple apertures 44 do not penetrate into the multiple ply which form the coextensive second absorptive section 47, the front strap 42, and the rear strap 43. The plural ply of menstrual fluid resistant, air porous, crepe tissue sheet membrane 48 coextensively underlie coadjacent to the multiple ply tissue sheets of the second absorptive section 47, and the straps 42 and 43.
As the collective FIGS. 4, 5, 6 together illustrate, the first absorptive section area 46 having the reservoir apertures 44, is coplanarly coextensive in area with the second menstrual fluid absorptive section area 47. The second section area 47 is functionally similar in geometry and absorptive function with absorptive section area 2 of FIGS. 1, 2 and 3. Typically, the multiple ply of tissue paper sheets forming the front strap 42, the rear strap 43 and the coextensive secondary absorptive section area 47 of FIG. 5 can typically range in the number of single ply of 10 lb. weight crepe tissue stock from 18 to 28, or the like. The multiple ply of tissue stock in the primary absorptive section 45 can range as taught in my Pat. application Ser. No. 742,922. The short front strap 42 has a length, S LF = 53, and a width, S WF = 54. The primary absorptive section area 46 has a length, A L = 55, and a width, A W = 56. The longer rear strap has a length, S LR = 57, and a width, S WR = 58.
Preferably, the front straps 3 and 42 as well as the rear straps 4 and 43, of napkins 1 and 40 have strap widths, S WF and S WR respectively, equal to one-third the width of the menstrual fluid absorptive sections 2 and 41, represented by A W . Typically, the front strap lengths 12 53, represented by the generic terms S LF , has a typical length ranging from 4 to 51/2 inches. The rear straps 4 and 43 have the strap lengths 14 and 57 respectively, and are represented generically by the term S LR . S LR has a length typically ranging from 6 to 8 inches. The above typical napkin measurements are generally required to fit a wide range of female sizes ranging from dress size 7 to dress size 45 or the like, as listed by the Department of Commerce standard in Report CS215-58 on female body measurements.
The strap 42 is shown in FIG. 4 to have the embossed area 59 disposed across the width 54 for a typical length of one inch. A further narrow embossed area 60 is disposed along the remaining length of strap 42 on the napkin length axis, as is shown in plan view in FIG. 4, and in elevational sectional view in FIG. 6. The embossed areas 59 and 60 form compressed, multiple layers of thin tissue sheets which adhere to each other, as a result of ironing out the crepe in the tissue sheets. Typically, the 24 single ply of creped tissue in a strap 92, or the like, has an approximate thickness of one-sixteenth inch in an uncompressed condition, but the same tissues are compressed to about 0.004 inch thickness when embossed. The embossed area 59 provides a strap tip easily inserted in a sanitary napkin support belt. The embossed area 60 provides a securing means for the multiple ply of strap tissue sheets, while also providing a fluffy, soft napkin strap which will not irritate the user's skin in use. The embossed area 61 on the tip of scrap 43, and the embossed area 62 on the napkin length axis, are equivalent to 59 and 60 respectively.
FIG. 7 illustrates in plan view a further modification of this invention. Multiple reversible menstrual napkins are shown in an interlocking napkin pattern planar arrangement suitable for high speed die cutting production of the napkin product. The planar view of FIG. 7 is a partial showing of a wide web width which can typically represent twelve reversible napkins of the plan view 70 or the like, disposed side by side on the web width. The reversible napkin 70 illustrated in full plan view is typical of the napkins 70 through 75 shown in full plan, as well as the partial plan views of the reversible napkins designated by 76 through 87, with partial plan views of the straps only of reversible napkins 88 through 93. The napkins 70-93 are all fully equivalent in planar area, shape and size. The length axes of napkins 70-93 are disposed colinearly parallel with the machine direction of the multiple ply of crepe tissue paper sheets, from which the absorptive section area 2 and 47 and the straps of the general type of 3, 4, 42, 43 and the like are formed. The reversible integral strap tissue napkins 70-93 have the two strap lengths front and rear, S L , equal in value, and also equal to the length of the elongated absorptive section area A L . The reversible integral strap tissue napkins 70-93 have the front and rear strap widths equal in value to S W , which is also equal to one-third (1/3) of the value of the width of the absorptive section area, A W . Thus
A L = S L
and
A W = 3 S W
The length axis of the reversible napkin is disposed to coincide with the machine direction of the web of crepe tissue paper sheets, in order to provide a maximum operational strength for the multiple plies of crepe tissue paper stock embodied in the napkins. The machine direction of a web of tissue paper generally represents the maximum strength for crepe tissue paper stock.
For maximum utilization of multiple plies of crepe paper tissue, the single reversible napkin configuration 70 of FIG. 7 requires that two menstrual fluid absorptive section areas, having equal lengths A L , have coadjacently contiguously disposed between them a pair of oppositely extensive securing straps, having equal strap lengths, S L . Thus, A L = S L . Thus the pair of mounting and securing straps disposed between the pair of menstrual fluid absorptive body section areas are each oppositely attached at one end of each strap to a separate absorptive body section area. One of the pair of straps coextensively joins one end width of one absorptive section area and the second of the pair of straps coextensively joins a geometrically opposed end width of a second absorptive section area.
The reversible napkin planar configuration 70 of FIG. 7, or the configuration of napkin 1 of FIG. 1, or the like, can be formed by die cutting. The reversible napkin configuration 70-93 and the like is particularly adapted to rapidly continuously multiple cutting the napkins from a wide web of multiple plies of crepe tissue paper stock. The apertures required for the adhesive plug bonding means 5, 6, 7, 8, 9 and the like are punched simultaneously with the die cutting of the planar napkin outline itself. The primary absorptive section area 46 of FIG. 4 may be combined with the secondary absorptive section configuration underlying, according to the teaching of the patent application U.S. Ser. No. 742,922.
A further improvement in the integral strap tissue napkin 1, 40, 70 or the like, can be made by printing the typical strap areas 88-93, which are plan views of partial straps, together with the total strap areas designated as 94-106 with a moisture proofing composition suitable for treating paper, thus rendering the paper resistant to the penetration of perspiration, menstrual fluid and the like, without destroying the creped paper's air porosity. Thus, the creped tissue paper which comprises the planar top plural ply, numbering from 1 to 4, or the like, of the multiple plies of crepe tissue paper sheet forming the strap configuration, can be fully printed in the strap geometrical outline on an ordinary web feed printing press, or the like, utilizing water resistant, solvent based compositions as printing ink. The strap geometrical outline can be printed in color by adding a suitable paper dye. The printing can be done complete with register marks for later high speed die cutting, utilizing a photoelectric eye monitoring system, or the like. Thus in application, the top several plies, 1-4 or the like, of the multiple plies of crepe tissue paper stock which comprise the web can be fed in the machine direction for die cutting as illustrated in FIG. 7. The napkins can be die cut according to the printed strap colors, utilizing a register mark if required for accurate die cutting. The integral strap tissue plies which are thus protected retain their wet strength in the presence of body perspiration, menstrual fluid, and the like.
The menstrual napkin modifications of this invention can be manufactured at high production speed on comparatively wide web paper processing machinery by rotary or reciprocating die cutting devices. The teachings of my earlier patent applications, Ser. Nos. 67,593 and 742,922 and U.S. Pat. No. 3,532,097 are relied upon.
Further, by embossing the integral straps 3, 4, 42, 43 and the like during the die cutting operation, it is possible to cohere the strap multiple tissue ply together. The embossing is preferably formed on the terminal tips of the straps, and as a strip along the axis of symmetry of the straps. The embossing should be geometrically disposed on the straps in positions which avoid stiffening the straps at the strap edges adjacent to the wearer's skin, in order to avoid irritating the wearer. The embossing can replace some of the adhesive plug bonding means 5, 6, 7, 8, 9 or the like.
Many modifications and variations of my improvements in integral strap tissue napkins and process for their manufacture may be made within the light of my teaching. It is therefore understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.