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4818463 |
Process for preparing non-woven webs
A process for producing a non-woven web of thermoplastic polymer fibers comprises extruding a thermoplastic polymer through a series of die openings while passing a stream of hot gas from both...
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4818464 |
Extrusion process using a central air jet
A thermoplastic material extrusion mechanism is provided which includes a die head having a centrally disposed high velocity gas delivery means adapted to continuously emit a jet of a gas having...
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4814099 |
Incorporating detergent into a meltblown laundry detergent sheet via the meltblowing quench spray
A method for making a meltblown liquid laundry detergent sheet provides increased active detergent solids by spraying a solution of detergent enchancers of the liquid detergent formulation into the...
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4814032 |
Method for making nonwoven fabrics
A method for making nonwoven fabrics includes the steps of preparing heat-adhesive composite fibers including first and second components, forming a web of the composite fibers alone or containing...
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4794041 |
Activation of polyethylene terephthalate materials for improved bonding to adhesives
A method for the activation of polyethylene terephthalate materials such as tire yarns is provided whereby the adhesion of the material to an adhesive is enhanced. The material is activated by...
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4783231 |
Method of making a fibrous web comprising differentially cooled/thermally relaxed fibers
A fibrous web comprising fibers which have been differentially cooled to provide a crimped fiber conformation thereto and then thermally relaxed to a sufficient degree to at least partially decrimp...
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4772347 |
Process for making filamentary structure
A method of making a filamentary structure comprising a spiral thermoplastic core filament disposed within a thermoplastic sheath component is provided. The method involves extruding together from...
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4753843 |
Absorbent, protective nonwoven fabric
There is disclosed a multi-layered absorbent, protective nonwoven web which has one or more center layers of melt-blown polypropylene microfibers which are naturally hydrophobic. The center layers...
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4753834 |
Nonwoven web with improved softness
Nonwoven webs are disclosed which comprise monofilaments or fibers of a thermoplastic material. Basically, the improvement comprises the use of monofilaments or fibers which have a bilobal shaped...
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4753698 |
Method for the production of spun bonded nonwoven fabrics having a uniform structure
Disclosed is a method for producing spun bonded nonwoven fabrics which have a highly uniform fleece structure and a uniform weight per unit area. In the method, a plurality of linear ranks of...
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4738740 |
Method of forming implantable vascular grafts
Vascular grafts are provided that have an external surface which has a porous structure that is conducive to tissue ingrowth thereinto after the vascular graft has been implanted. The vascular...
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4731215 |
Process for forming non-woven webs from highly oriented melt blown fibers
There is disclosed a process and apparatus for melt blowing at an initial velocity of from 500 to 1000 feet per second a molten thermoplastic condensation polymer at a temperature less than 50° C....
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4720314 |
Process for producing self-crimping polyester yarn
Polyester polymer is extruded at different speeds through groups of parallel closely spaced orifices at relatively high spinning speeds. The resulting filament have high and low shrinkage regions...
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4714647 |
Melt-blown material with depth fiber size gradient
A filter medium is formed by sequentially depositing layers of melt-blown thermoplastic fibers, having the same composition but different sizes, onto a collector. The resulting laminate web has a...
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4689188 |
Method of preparing fiber reinforced ceramic material
Alternate layers of mats of specially coated SiC fibers and silicon monotapes are hot pressed in two stages: In the first a die is heated to about 600° C. in a vacuum furnace and maintained at...
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4678698 |
Contact lens cleaning article
An article and a method for cleaning a contact lens is disclosed, said method comprising providing a moistened non-woven fibrous web wherein the average fiber diameter is up to 50 microns,...
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4666542 |
Process for the production of disposable diaper panties
The starting material consists of a multistrand elastic tape (7) which is fed by the apparatus (11) and then separated by the successive separators (20, 24, 30, 31, 32, 33) into two arrays (35, 36)...
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4661132 |
Themally formed gradient density filter
A fluid filter is formed by producing an air laid nonwoven batt comprising a randomly arranged mixture of thermoplastic fibers and fibers which are not thermoplastic. The batt is then cut into...
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4636231 |
Panel air filter
A filter element and method for making it include the steps of providing a pleated paper filtering media and providing a batt-like filtering media containing thermoplastic fibers which is slightly...
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4578134 |
Process for the production of spunbonded fabrics from aerodynamically drawn filaments
A process for the production of spunbonded webs by the aerodynamic drawing of filaments or filament rows which are drawn by means of air currents divided into component currents whereby the air...
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4578307 |
Nonwoven sheet having improved heat deterioration resistance and high elongation
Disclosed is a nonwoven sheet consisting of undrawn polyethylene terephthalate filaments of which an outer layer portion of a filament section has a higher orientation and higher crystallization...
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4563358 |
Composite food product and method for making the same
An edible composition comprises an integrally extruded net formed of an edible material e.g. a cereal-based, sugar-based or fat-based material. The composition has a novel appearance and...
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4552603 |
Method for making bicomponent fibers
Novel heat bondable bicomponent fibers useful in the production of nonwoven fabrics, as well as methods for the production of such fibers, are disclosed. The fibers comprise a latently adhesive...
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4547244 |
Method for producing capillary nibs for inscribing instruments
A capillary nib for pens is shaped from a thermoplastic resin bar and has a cross-sectional shape comprising an outer shell and a plurality of projections joined integrally at their bases to the...
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4519860 |
Method and apparatus for the production of a high-strength, tear-resistant polymer composite
A method and an apparatus for the production of a composite plastic material consisting of oriented polymer filaments and a polymer film web, and more particularly, the production of a composite...
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4484966 |
Process of and apparatus for manufacturing carcass band forming part of radial tire
A process of manufacturing carcass bands which are reinforced by cords and are to be employed in fabricating a radial tire. The process includes the steps of unwinding a plurality of cords from a...
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4475972 |
Implantable material
Porous polymeric material, which, in tubular form, is suitable for use as a vascular graft, is made by a procedure wherein polymeric fibres are wound on a mandrel while overlying fibres are...
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RE31599 |
Low density matting and process
A low density matting structure of improved transverse strength obtained by vertically laying continuous melt-spun thermoplastic macrofilaments (diameter=0.1-1.5 mm) onto a horizontally moving...
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4442062 |
Process for producing melt-blown thermoplastic articles
A process and apparatus are provided for the production of a non-woven fabric by melt-blowing wherein one or more yarns, e.g. monofilaments, are added or charged into the fabric stream between the...
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4421583 |
Man-made filaments and method of making wound dressings containing them
A non-woven alginate fabric useful as a wound dressing is made by spreading a tow of calcium alginate filaments in a flow of water, overfeeding the spread filaments onto a water-pervious support so...
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4411722 |
Method for producing a non-woven fabric of cross-laminated warp and weft webs of elongated stocks
A process for producing a non-woven fabric of cross-laminated warp web and weft webs is provided, which comprises first preparing the weft webs by ejecting a molten polymer of specified properties...
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4399184 |
Rip resistant net
A rip resistant net is produced by the coextrusion of two or more polymers wherein some of each polymer is in every filament of the net.
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4392903 |
Process for making a thermal-insulating nonwoven bulky product
A process for producing thermal-insulating nonwoven bulky product characterized by its structural make up of substantially continuous single filaments of from about 0.01 to 2 denier which are...
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4375446 |
Process for the production of a nonwoven fabric
A process for producing a thermoplastic nonwoven fabric having a uniform thickness and optionally napped fibers according to a melt blowing method, which comprises blowing a fiber stream consisting...
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4373943 |
Multiple fiber forming machine
A multiple fiber formation machine permits a simultaneous drawing of a plurality of N optical fibers and then a linear multifiber stranding. It comprises a first drawing assembly for a plurality of...
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4358502 |
Glass fiber mat for reinforcing polyamides
A mat of randomly disposed multifilament glass strand of indefinite length bonded to each other within a binder consisting essentially of the dried residue of an aqueous dispersion of emulsified...
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4351683 |
Method of forming web material
A method of forming a resilient open fibrous web of inter-engaged coarse continuous kinky filaments, with one major surface of the web being flattened. The method involves extruding a bundle of...
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4346504 |
Yarn forwarding and drawing apparatus
An improved fluid operated forwarding and drawing apparatus for continuous filamentary materials including a jet nozzle structure defined by a fluid outlet port from a fluid plenum chamber and a...
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4345927 |
Apparatus and process for use preparing a continuous strand mat
An apparatus and process is provided for more random distribution of a bundle of strands into a continuous strand mat. The apparatus has a feeder for reciprocating, traversing deposition of strands...
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4342581 |
Mat width control
A process is described for preparing continuous strand mat which provides for more uniform density of the mat across the width of the surface on which it was prepared by using gaseous fluid...
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4330349 |
Method for preparing conductive fiber brushes
A method for making conductive brushes which comprises providing a rotatable cylindrical mandrel having a plurality of longitudinal recesses on its surface, and winding electrically conductive...
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4328055 |
Gut
A gut having a novel structure made of a thermoplastic resin and a method of producing the same.
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4325765 |
High speed spinning of large dpf polyester yarn
High speed spinning of high dpf non-round polyester filaments by extruding molten polymer through adjacent orifices spaced such that the extruded streams merge prior to solidification.
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4312917 |
Fiber-reinforced compound composite structure and method of manufacturing same
A compound composite structure is a combination of plastics and other materials forming a structure usable in the fabrication of manufactured products or components. A compound composite structure...
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4296164 |
Fibrous glass blowing insulation and process
Fibrous glass blowing insulation is made by slitting and crosscutting a blanket of fibrous glass wool into small columns and conveying the columns to a bagging machine, the columns normally...
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4285748 |
Selfbonded nonwoven fabrics
A selfbonded nonwoven fabric comprising at least 70 weight percent of sheath/core heterofilaments having a core of isotactic polypropylene in which the sheaths are high density polyethylene in an...
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4280860 |
Process for manufacturing nonwoven fabrics composed of crimped filaments
An improved process for making point-bonded nonwoven fabric composed of crimped filaments is described. The process involves melt spinning a side-by-side bicomponent filament which develops crimp...
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4269888 |
Heat-adhesive composite fibers and process for producing same
Heat-adhesive side-by-side type composite fibers consisting of a component composed mainly of a crystalline polypropylene and a component composed mainly of an olefin polymer, having few naturally...
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4267002 |
Melt blowing process
Thermoplastic materials are converted directly into thermally bonded, coherent fibrous products by melt blowing techniques. The fibrous product is in the form of a rod having a relatively dense,...
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4242295 |
Process for manufacturing flat plastic net
The invention provides a process and apparatus for manufacturing flat plastic net. Tubular plastic net is made by extruding plastic material through coaxial circular counter-rotating die members to...
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