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[0001] The present invention relates to a method of attaching a hair-thickening hair material applicable to attachment of a hair-thickening hair material to the own hair.
[0002] There is conventionally known a technique of apparently elongating hair by attaching a hair-thickening hair material to the own hair, and the technique is generally referred to as hair extension. One exemplary method of attaching the hair-thickening hair material is disclosed in Japanese Laid-Open Patent Publication No. 2002-20922. The method comprises a winding step in which an own-hair bundle obtained by picking up and binding a plurality of own hairs which rise up from the scalp is crossed with an artificial hair fiber bundle obtained by binding a plurality of artificial hair fibers, and the own hair is wound around the artificial hair fiber by at least a single turn at positions on the left-hand and right-hand sides of the intersection of the own-hair bundle and artificial hair fiber bundle; a weaving step for weaving the end side of the own hair bungle and both sides of the artificial hair fiber bundle at around the intersection; and a fusing step in which a portion of the artificial hair fiber bundle is picked up and wound around the woven portion, and then allowed to fuse by heating.
[0003] The above-described conventional method of attaching the hair-thickening hair material needs advanced skills in the step of winding the own hair around the artificial hair fiber bundle, and in the step of weaving the end side of the own hair bundle and both sides of the artificial hair fiber bundle at around the intersection, and this makes it difficult to attach the hair-thickening hair material in a simple and quick manner. One possible method for improving the conventional method of attaching the hair-thickening hair material is such as inserting the own hair and the hair-thickening hair material into a metal tube, and then compress and deform the tube using a pliers or other tool to thereby attach the hair-thickening hair material to the own hair. In this method, small openings, however, inevitably remain on the left and right ends inside the compressed tube no matter how the tube is tightly compressed, and this is highly causative of falling-off of the hair-thickening hair material from the openings. In particular for the case where the own hair and hair-thickening hair material are moistened by warm water typically during shampooing, falling-off of the hair-thickening hair material may be more serious typically due to swelling of the compressed and deformed tube. One possible countermeasure is such as reducing as possible the openings formed after the compression and deformation of the tube, and such as using a tube having a small diameter in order to reduce the falling-off of the hair-thickening hair material. Use of such small-diameter tube, however, considerably limits the number of own hairs or hair-thickening hair materials to be inserted therein, and this needs a longer time to attach a predetermined quantity of hair-thickening hair material to the own hair.
[0004] The present invention is proposed in order to solve the aforementioned problems which reside in the conventional method of attaching a hair-thickening hair material, and an object thereof is to provide a novel method of attaching a hair-thickening hair material, which allows the technician to easily and quickly attach a hair-thickening hair material without needing advanced skills, and can effectively prevent the hair-thickening hair material from falling off even during shampooing, and to provide a hair-thickening hair material fixture used for the method.
[0005] The present invention is proposed to accomplish the above-described object. A first invention (invention described in claim
[0006] Unlike the conventional method of attaching a hair-thickening hair material, the first invention makes it no more necessary to carry out the step of winding the own hair around the artificial hair fiber bundle, and the step of weaving the end portion of the own hair bundle and both ends of the artificial hair fiber bundle at around the intersection, and instead, allows the own hair and hair-thickening hair material to pass through the hair-thickening hair material fixture, so that the technician is no more required to be highly skilled, and can attach the hair-thickening hair material in a simple and quick manner. Because the hair-thickening hair material fixture having the own hair and hair-thickening hair material inserted therein shrinks when heated in the heating step, the present invention is successful in effectively preventing the hair-thickening hair material from falling off, and because the adhesive layer which is composed of a thermoplastic resin is formed on the inner circumferential surface of the hair-thickening hair material fixture, the thermoplastic resin composing the adhesive layer plasticizes upon heating and then cures after cooled to normal temperature, to thereby certainly fix the own hair and hair-thickening hair material. The first invention is therefore successful in avoiding a risk of falling-off of each hair composing the hair-thickening hair material.
[0007] The rubber exemplified as one material of the hair-thickening hair material fixture composing the first invention may be anything which can shrink upon heating, and examples thereof include fluorine-containing rubber, EPDM (ethylene-propylene-diene terpolymer) rubber and silicone rubber. Available examples of the resin include polyolefin resin, polyvinyl chloride, elastic neoprerne resin, fluoro-plastic Kynar resin, fluoro-plastic Teflon resin and polytetrafluoroethylene.
[0008] A second invention (invention described in claim
[0009] Because the inner circumferential surface of the hair-thickening hair material fixture has formed thereon a large number of piles individually having a hooked end, the second invention is therefore successful in effectively avoiding a risk of falling-off of (each hair of) the hair-thickening hair material once thickened (or fixed using the hair-thickening hair material fixture).
[0010] A third invention is characterized in that, in the first or second invention, the hair-thickening hair material is configured so that a plurality of hair-thickening hairs are bundled at one end using an adhesive.
[0011] Because the hair-thickening hair material is configured so that a plurality of hair-thickening hairs are bundled at one end using an adhesive, the third invention makes it possible to carry out the hair-thickening hair material insertion step for inserting a large number of hair-thickening hair materials into a hair-thickening hair material fixture from the other end thereof in an extremely easy manner, and after the hair-thickening hair materials were attached in the heating step, the invention is successful in further effectively avoiding a risk of falling-off of each hair composing the hair-thickening hair material.
[0012] A fourth invention is characterized in that, in the first to third inventions, the inner circumferential surface of the hair-thickening hair material fixture comprises a portion having the piles formed therein, and a portion having the adhesive layer which comprises a thermoplastic resin formed therein.
[0013] The fourth invention is successful in further effectively avoiding a risk of falling-off of each hair composing the hair-thickening hair material by virtue of the adhesive layer and piles formed on the inner circumferential surface of the hair-thickening hair material fixture. Because the adhesive layer is not formed in the portion having the piles formed therein, there may be a risk of falling-off of the entire portion of the hair-thickening hair material if the adhesive layer peels off from the inner circumferential surface of the tube after the hair thickening, but the fourth invention is successful in effectively preventing such peeling-off of the hair-thickening hair material by virtue of resistance against the piles. It is to be noted now that the hair-thickening hair material should tightly be fixed using the hair-thickening hair material fixture, but it is contradictorily preferable that the detachment thereof will not adversely affect the own hair as possible. The same will apply to the case where the adhesive layer (adhesive) is used, and for the case where hair thickening is accomplished using an adhesive, the hair-thickening hair material can be detached only by using a solvent compatible with the adhesive. The use of the solvent, however, raises a risk of damaging the own hair, so that it is desired to use an adhesive which is removable without using any solvent as possible. On the other hand, this sort of adhesive is poor in the adhesiveness with the inner circumferential surface of the tube, and may undesirably fall off upon being applied with some external force. The hair-thickening hair material fixture composing the fourth invention (or the hair-thickening hair material fixture according to a fifth, sixth or seventh invention described later) is successful in effectively prevent the hair-thickening hair material from falling off even when an adhesive such as allowing the hair-thickening hair material to be readily detached without using any solvent is used.
[0014] The adhesive layer formed on the inner circumferential surface of the tube is preferably composed of a thermoplastic resin capable of plasticizing in the above-described heating step. The thermoplastic resin may be any one of polymers selected from the group consisting of polyamide resin; polyester resins such as polyethylene terephthalate and polybutylene terephthalate; acrylonitrile-styrene copolymer resin; acrylonitrile-butadiene-styrene resin; polylcarbonate resin, vinylidene chloride-vinyl chloride copolymer; copolymerized acrylonitrile resin; polyamide-base thermoplastic elastomer such as polyamide-polyether block copolymer; styrene-base thermoplastic elastomer such as styrene-butadiene block copolymer resin; polyolefin-base thermoplastic elastomer such as polypropylene-ethylene propylene rubber block copolymer resin; polybutadiene-base thermoplastic elastomer; polyester-base thermoplastic elastomer; and thermoplastic elastomer such as ethylene-vinyl acetate-base copolymer.
[0015] The fifth invention (invention described in claim
[0016] Similarly to the invention of the aforementioned first invention, the fifth invention is successful in effectively preventing the hair-thickening hair material from falling off.
[0017] A sixth invention (invention described in claim
[0018] Because resistance between the piles and hair-thickening hair material increases, the sixth invention is more successful in avoiding a risk of falling-off of the hair-thickening hair material.
[0019] A seventh invention (invention described in claim
[0020] An eighth invention (invention described in claim
[0021] The seventh invention is more successful in preventing the hair-thickening hair material from falling off as compared with a fixture having either one of the piles and adhesive layer over the entire portion of the inner circumferential surface of the tube, and is also successful in effectively avoiding adverse influence on the own hair because it is possible to adopt an adhesive which is removable without using any solvent for detachment of the hair-thickening hair material. The eighth invention is successful in avoiding adverse influence on heat shrinkage property of the tube even when a sheet having the piles formed thereon is placed on the inner circumferential surface of the tube instead of directly raising the piles from the surface.
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[0033] The following paragraphs will detail a method of attaching a hair-thickening hair material and a hair-thickening hair material fixture according to one embodiment of the present invention, referring to the attached drawings.
[0034] In the method of attaching a hair-thickening hair material according to this embodiment, as shown in
[0035] The piled sheet
[0036] As shown in
[0037] Procedures for the method of attaching the hair-thickening hair material will sequentially be described below. First, a several number of the own hairs
[0038] Upon completion of the own-hair insertion step, then as shown in
[0039] Upon completion of the own-hair insertion step and the hair material insertion step, the chip
[0040] The method of attaching a hair-thickening hair material of the above-described embodiment therefore makes it no more necessary for the technician to be highly skilled, unlike in the conventional method of attaching the hair-thickening hair material, and allows simple and quick attachment of the hair-thickening hair material to the own hair. Because thus-configured chip
[0041] Detachment of the hair-thickening hair material
[0042] As described in the above, use of the hair-thickening hair material attaching chip
[0043] It is to be understood that the hair-thickening hair material fixture according to (or composing) the present invention is by no means limited to the hair-thickening hair material attaching chip
[0044] The hair-thickening hair material attaching chip
[0045] In place of directly raising the piles