SK284931B6 - Method of treating hair, particularly elongation and/or densification thereof, strand of additional hair and process for producing thereof - Google Patents

Abstract

Method of treating hair, particularly elongation and/or densification thereof is based on the principle of joining a strand (6) of real hair and a strand (1) of additional hair by making use of a heat shrinkable plastic tube (7). A solid compact body (3) of a moldable, heat resistant material is formed on each strand (1) of additional hair. Prior pulling the heat plastic tube (7) over the solid compact body (3) the surface of the latter is roughed for retaining the real hair pressed against said compact body (3) surface during shrinkage of the plastic tube (7). Compact body (3) can be made of a moldable heat resistant material, wherein are pressed grains (4) having sharp edges or can be made of metal tube (8) form from strip of tin, pressed into a strand (1) of additional hair and coated by a grinding dust. A strand (1) of additional hair is fitted with a compact body of a moldable heat resistant material, which has roughed surface. Described is also process for producing of strands (1) of additional hair.

Description

Technical field

The invention relates to a method of hair treatment, in particular to lengthening and / or thickening thereof, which is based on the principle of joining the strand of its own hair and the strand of additional hair by means of a heat-shrinkable plastic tube. On each of the strands of accessory hair, a solid body is formed of a ductile, heat-resistant material, which then constitutes its thickened portion and in which the accessory hair is trapped. The attached strand of additional hair is inserted into the strand of its own hair by the end so formed, and the plastic tube is moved along the hair so that it surrounds the fixed body and extends beyond both ends. After heating and subsequent shrinkage of the plastic tube, its sheath is shaped according to the shape of a solid body that tightly embraces and at the same time pulls off all hair that protrudes at both ends. The invention also relates to a strand of additional hair and to a process for its manufacture.

BACKGROUND OF THE INVENTION

For cosmetic but also medical purposes are used various methods of lengthening or thickening naturally grown hair. Systems are known in which custom hair is bonded to artificial or real hair using a variety of bonding, bonding or knotting techniques.

The method of hair extension according to British patent application no. GB 2,271,057, which is, however, relatively laborious and complex. Here, the additional hair is folded and inserted into an auxiliary plastic tube, which shrinks by heat, and the whole is further inserted together with the strand of its own hair into another heat-shrinkable tube.

U.S. Pat. U.S. Pat. No. 4,934,387 describes a method of bonding own and additional hair by gluing and preparing a colored thermoplastic adhesive, in particular dyeing the adhesive with colored powders. This method is also quite strenuous and not suitable for normal use.

Patent application PCT / EP95 / 04396 discloses a hair extension process in which a knot is formed on a strand of its own hair, a strand of synthetic hair is attached, at the end of which is a solid body of heat-resistant mass representing the strand reinforcement and through the joint is passed through a heat-shrinkable plastic tube. It follows the shape of the solid body and simultaneously pulls the two strands together and positively secures the joint. Creating knots on your own hair, and therefore on the client's head, is lengthy and, of course, cannot be prepared in advance. Although this connection can be released after re-heating the die plastic tube, it has the disadvantage that very often the knot is tightened so that its release is difficult and laborious and sometimes there is no other way to cut it off. The disadvantage of this joint is also its relatively low tensile strength.

Another type of hair bonding closest to the present invention is described in U.S. Pat. U.S. Pat. No. 5,107,867. This is an adhesive bond where a body of thermally stable mass is formed on the strand of additional hair. Once hardened, a solid body is also formed on which a layer of thermosetting adhesive is applied. A heat-shrinkable plastic tube is inserted onto the strand of the hair, and the glued end of the strand of additional hair is then inserted. The joint is passed through a shape memory plastic tube. After application of heat, the plastic tube shrinks and pulls the two strands together; by simultaneously copying the shape of the rigid body forming the thickened portion of the hair strand, it also secures the joint against displacement. This positioning effect is further enhanced by melting the adhesive simultaneously with heat and supersaturating the strand of the hairs of its own, and subsequently curing the adhesive layer. After re-heating the plastic tube, the joint can be loosened, the cured adhesive layer, for example, breaks out and the additional hair can be removed. The disadvantage of this method is that adhesive residues adhere to the hair after removal of the additional hair, which must be removed with suitable solvents or cut the hair.

It is an object of the present invention to provide a hair treatment in which the bond of the hair itself and the additional hair is reliable, firm and time-stable, and its formation is fast and efficient. It is a further object of the invention to keep the hair connection neat and as small as possible, and to keep the hair itself intact even in the case of a long-lasting hair attachment.

SUMMARY OF THE INVENTION

Said object of the invention can be achieved by a method of hair treatment, in particular of lengthening and / or thickening, which is characterized in that, prior to passing the heat-shrinkable plastic tube, the solid body is provided with a roughening on its surface which retains its own hair pressed against the solid body When shrinking the plastic tube, the tops of this roughening are simultaneously pressed into the shell, which not only copies the shape of the solid body but also the surface roughening of the solid body.

The rigid body retains its shape and consistency even during heating, so that the joint is releasable when the lance is re-heated, but the hair itself remains clean and undamaged. In this connection, the connection of the strands has a high tensile strength compared to other known methods. This is also due to the fact that the solid body has not only an enlarged contact surface during its surface roughening, but the shrinkable tube, in its shrinkage, copies, along with the basic shape of the solid body, also the roughening projections on which the tube sheath is retained. The hair is then firmly attached between the projections of the roughening and the adjacent sheath of the shrink tube. All this makes it possible to create a stronger joint with very good positional locking. The joint area is relatively small and so does not disturb its appearance, the additional hair coincides with its own. Importantly, this treatment is very gentle on your own hair and can also be used on hair bleached and damaged. There is no need to unravel the various knots, and the hair styling time is significantly reduced.

The rigid body may be formed by first providing each of the strands of accessory hair with a body of heat-resistant bonding material in the ductile state in the region of the end to be attached. The strand of additional hair adhered to both sides of the envisaged bonding region, upon application of the heat-resistant bonding mass, is twisted between the attachment points, mixing the hair with the bonding mass while compacting the hair in the strand and thereby thinning it in this region. The solid is then brought into contact with the particulate granular material prior to complete solidification, where the solid grains have edges at their tips which may be preferably sharp, and then the grains adhered to at least a portion of its outer surface are mechanically pressed into it and simultaneously it forms the solidifying body into a cylindrical shape.

The use of ductile plastic to form the body is very quick and quick. In addition, it allows the strands of additional hair to be twisted, thereby mixing the hair with the fastener while compacting and thereby thinning the strand in this area. The thinner the strand, the more neat it is to combine it with its own hair. The use of plastic also makes it possible to produce a readily and easily roughened surface on the solid body by means of solid grains which can be pushed into the body so that it protrudes only by the tips of its sharp edges and practically avoids further thickening of the body and thus unwanted coarsening.

The grains may be of corundum or glass with a size of 50 to 220 µm, preferably 120 to 180 gm. The sharp edges of the grains significantly contribute to the securing of the joint.

The solid body may also be formed by a metal tube which is threaded onto the strand of additional hair in the region of the attached end and then externally applied thereto by pressure from several sides, thereby creating point-like depressions in its jacket over the height of the metal tube above mutually offset, extending into the inner space of the pressed metal tube up to the hair.

The formation of a solid body with a metal tube provides the advantage of making the joint even easier and faster, and pressing the tube with special pliers is quick and efficient. The tube may preferably be of a tin-plated copper plate with a length of 4 to 10 mm and a starting diameter of 1.3 to 3.5 mm.

In both embodiments of the solid body, the additional hair projecting over the end of the solid body is cut off before being inserted between the hair itself, thereby forming a pre-formed strand of additional hair with a fixed insertion end.

In an alternative embodiment, the plastic tube may be provided with roughening on at least a portion of its inner surface. This roughening of its inner surface in combination with the roughening of the surface of the rigid body of the strand of additional hair contributes to increasing the bond strength of the own hair and the additional hair.

The invention also relates to a strand of additional hair intended to be joined to a strand of own hair for lengthening and / or thickening. It is provided with a solid body of ductile, heat-resistant material in the region of its attached end, in which the additional hair is fastened. The solid body is roughened on its surface. The roughening is formed by solid grains anchored in the surface of the solid body, the tips of which have edges which may advantageously be sharp. They can be abrasive. The strand can be made in advance, which greatly speeds up the work of the hairdresser and the client's time. It can also be sold as a stand-alone product.

The invention also relates to two separate methods of making strands of additional hair intended to be bonded to the strands of their own hair for lengthening and / or thickening, in which a solid body is subsequently formed on each of them from a ductile, heat-resistant material which then constitutes its reinforced the part where the additional hair is caught.

According to a first possibility, a heat-resistant bonding compound in the ductile state is first applied to the strand of the additional hair in the region of the bonded end, the strand of additional hair adhered to both sides of the envisaged bonding area. by the jointing compound, while simultaneously compacting the hair in the strand and thereby thinning it in this area. The end, provided with the heat-resistant mass, is contacted with the particulate granular material prior to its solidification, where the solid mass has edges at its tips, and then the solid mass adheres to the outer surface of the heat-resistant mass. the material is formed into a solid body.

Alternatively, the rigid body is formed by a metal tube which is threaded onto a strand of accessory hair in the region of the attached end, and then externally applied thereto by pressure from several sides such that the metal tube is pushed and its points are formed by point depressions, and this over the height of this pipe overlapped, mutually offset, which extend into the interior space of the pressed metal tube up between the hair.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail with reference to the drawings in conjunction with the following description of specific embodiments. 1 to 4 show the preparation of strands of additional hair for joining them with their own hair. 1 shows a strand of additional hair which is provided in the region of the end to be attached with a heat-resistant jointing material in a ductile state which, after partial solidification, forms a solid body. Figure 2 shows how the strand curls in the region of the end to be attached after applying the heat-resistant fastener, thereby mixing the hair with the fastener while compacting the hair and thereby thinning the strand in this region. Figure 3 shows another phase of the preparation of the strand of additional hair, in which the hair protruding over the end of the fixed body is cut off. Fig. 4 shows a strand of additional hair with a solid body after insertion before it is completely solidified into a loose granular material with the adherence adhered to its outer surface, which is mechanically pushed therein while simultaneously forming the solid body. Figures 5 to 7 show successively the process of joining one's own hair with a strand of additional hair. In Figure 5, a heat-shrinkable, shape-memory plastic tube is pushed onto the strand of own hair close to the head. In Figure 6, a solid strand of additional hair is inserted into the tube between the hair itself. Finally, Figure 7 shows how, after heating and subsequent shrinking of the lance, its sheath presses its own hair against the roughened outer surface of the rigid body, thereby securing the joint against mutual displacement. By way of illustration, the joint is illustrated in an enlarged embodiment, in fact a subtle, neat and thin joint.

Figures 8, 9 and 10 show alternative embodiments of a rigid strand for the strand of additional hair, the strand being formed by a metal tube which is punctured in several places in between the hair. Fig. 8 shows a metal tube with an inserted strand of additional hair before being pushed; Fig. 9 after being pushed; and Fig. 10 shows a detail of the metal tube after being pushed and roughened with protruding protrusions.

DETAILED DESCRIPTION OF THE INVENTION

In the method of thickening and / or lengthening the hair, strands of additional hair, artificial or natural, are first prepared. According to the basic variant, each strand 1 of additional hair is attached to both sides of the envisaged bonded area 2 and a heat-stable adhesive, for example epoxy resin, heat-resistant up to 200 ° C is applied in the required amount in the required amount. where the adhesive is schematically shown as a rectangle). After the application of the heat-resistant bonding agent (glue) and its partial setting, the strand 1 of the additional hair in the bonding area 2 between the attachment points twist (see Figure 2), mixing the hair with the bonding material while compacting the hair and thereby thinning the strand. area. A fixed body 3 is thus formed at the future joining point, which represents a local reinforcement. The hair protruding over the end of the fixed body 3 is trimmed (in FIG. 2, the cut-off location is schematically indicated by dashed lines; in FIG. 3, the strand 1 of the additional hair is shown after cutting off the overhanging hair).

The strand 1 of the additional hair is inserted into the free-flowing granular material with firm, sharp edges of the grains before the solid body 3 completely solidifies, and the grains 4 adhered to its outer surface are mechanically pressed into it, preferably by fingers. At the same time, the rigid body 3 is thus shaped, preferably into a cylindrical shape. The solid grains 4 are, for example, of corundum or glass of 50 to 220 µm, preferably 120 to 180 µm, and their peaks, slightly protruding when pressed, form a roughening on the surface of the solid body 3.

Alternatively, the rigid body 3 may be formed by a metal tube 8 (Figures 8, 9 and 10) which is threaded onto the strand 1 of the additional hair (or the strand 1 of the additional hair is inserted, for example by means of shaped pliers). The metal tube 8 is made of tinned copper thin sheet and has a length of 6 mm and a starting diameter of 2.5 mm. In order to form a rigid body 3 in which the strand 1 of the additional hair is fixed and which forms its fixed insertion end, pressure is exerted externally on the tube 8 at the same time from eight sides around the metal tube 8 so that the tubes 8 form point-like depressions 9. The depressions 9 are over each other along the height of the metal tube 8 and are offset from one another, with their peaks alternatingly interposing each other into the interior of the push tube 8 between the hairs so fastened therein. The metal tube may also be slightly deformed when it is pushed in, thus reducing its overall diameter. The resulting solid body 3 representing local reinforcement has a cylindrical character and its surface is provided at least in part with a layer of solid grains 4 with sharp edges. For example, the layer may consist of abrasive dust that is wrapped on a surface provided with an adhesive.

The strands 1 of the additional hair formed according to both the first and second alternatives are further treated in the same manner in the process of hair extension and / or thickening. As close to the client's head 5, at a distance of about 0.5 to 1.5 cm, a threaded, heat-shrinkable plastic tube 7 (e.g. of polyethylene) with a shape memory (see Figure 5) having a length about 10 mm and an outside diameter of about 2.4 mm before shrinking. Its dimension must be such that it can be pulled through the fixed body 3. The inner surface of this tube 7 can be at least partially provided with roughening (not shown), for example by mechanically disrupting the smooth surface, which increases the gripping effect. A fixed body 3 with a strand 1 of additional hair is then inserted between the hairs of the self-hair strand 6, such that the self-hair at least partially overlaps the solid hair 3 (Figure 6). The die tube 7 is then displaced to surround a rigid body 3 over which it extends by approximately 2 mm at both ends (Figure 6). After heating to a temperature of about 120 to 150 ° C and then shrinking the plastic tube 7 (approximately half the diameter), the irregularly roughened surface of the solid body 3 captures the hair pressed against the surface of the solid body 3 under pressure of the shrouded plastic tube 7. with their sharp edges, they push into the sheath of the plastic tube 7, which sufficiently secures the joint of the own and the additional hair against mutual displacement, the joints do not slip along the length of the hair. When the solid body 3 is wrapped around the sheathed plastic tube 7, all the hairs overlapping at both ends are contracted.

The joints of the actual and additional hairs of the present invention are dimensionally small, neat, and at the same time rigid, with very good fusion. It is important that the hair does not adhere to the joint, it is gentle on it and remains undisturbed even if the connection lasts for several months. There is no need for time-consuming untangling of the knots on their own hair, which, due to the higher temperatures used up to now (up to 220 ° C), were in a deteriorated state after the joint was released. The new method is therefore gentle, faster and less expensive to own hair, the joints are very strong. Since the hair itself blends in perfectly with the additional hair, the known and undesirable effect of the visibly bifurcated strands does not occur in this way.

Industrial usability

The hair treatment method of the present invention is widely applicable to hair lengthening or thickening, and is also suitable for discolored and otherwise chemically damaged hair.

Claims (10)

PATENT CLAIMS Method of hair treatment, in particular of lengthening and / or thickening, based on the principle of joining a strand (6) of its own hair and a strand (1) of additional hair by means of a press-through, heat-shrinkable plastic tube (7). the additional hair is formed by a rigid body (3) of a ductile, heat-resistant material, which then constitutes the thickened portion thereof, in which the additional hair is retained, and subsequently the attached strand (1) of the additional hair is inserted into the hair of the strand (6) and the plastic tube (7) is displaced so that it surrounds the fixed body (3) and protrudes at both ends thereof, and after heating and subsequent shrinking of the plastic die (7), its casing is shaped according to the shape of the fixed body (3). tightly embraces and at the same time pulls off all hair that protrudes at both ends, characterized by By forcing the heat-shrinkable plastic tube (7), the solid body (3) is provided with a roughening on its surface which captures its own hair pressed against the surface of the solid body (3) when the plastic tube (7) shrinks into its sheath. at the same time, the tips of this roughening are pressed. Hair treatment method according to claim 1, characterized in that, in order to form a solid body (3), each of the additional hair strands (1) is provided in the ductile state with a body of heat-resistant jointing material in the area to be joined. the strand (1) of additional hair adhered to both sides of the presumed bonded area (2) is twisted after the application of the heat-resistant bonding material between the attachment points, whereby the hair is mixed with the bonding material while compacting the hair in the strand (1). In this region, the solid is then contacted with the granular material prior to complete solidification, where the solid grains (4) have edges at their tips, and then the solid grains (4) adhered to its outer surface are pressed into it and simultaneously solidifies the solid Hair treatment method according to claim 2, characterized in that the solid grains (4), the edges of which are sharp, are made of corundum or glass with a size of 50 to 220 µm, preferably 120 to 180 µm, and the binding mass is epoxy Resin, heat resistant up to 200 ° C. Hair treatment method according to claim 1, characterized in that the fixed body (3) is formed by means of a metal tube (8) which is threaded onto the strand (1) of the additional hair in the region (2) of the attached end and then it is externally exerted by pressure from several sides, thereby forming point-like depressions (9) in its casing over the height of this tube (8) one above the other, which intersect with each other and extend into the interior of the pressed metal tube (8) . Hair styling method according to claim 4, characterized in that the metal tube (8) is of tinned copper with a length of 4 to 10 mm and a starting diameter of 1.3 to 3.5 mm, provided with a roughening on the surface, for example is coated with abrasive dust. Hair treatment method according to any one of the preceding claims 1 to 5, characterized in that the plastic die tube (7) is roughened on at least a part of its inner surface. A strand of accessory hair intended to be joined with a strand (6) of its own hair for lengthening and / or thickening, which is provided in the region (2) of its attached end with a rigid body (3) of ductile, heat-resistant material in which additional hair caught, characterized in that the solid body (3) is roughened on its surface. A strand according to claim 7, characterized in that the roughening is formed by solid grains (4) anchored in the surface of the solid body (3), the tips of which have sharp edges. Method for producing a strand (1) of additional hair intended to be bonded to a strand (6) of its own hair, to extend and / or thicken it, in which a solid body (3) is formed therefrom from a ductile, heat-resistant material which represents a thickened portion thereof, in which the additional hair is retained, characterized in that a heat-resistant tie in the malleable state is first applied to the strand (1) of the additional hair in the ducted end region (2); attached to both sides of the presumed bonding area (2), after application of the heat-resistant bonding material between the attachment points, the hair and the bonding material are mixed while the hair is compacted in the strand (1) and thereby thinning in this area. before the solidification is brought into contact with the loose granular material, where the solid grains (4) and then the solid grains (4) adhered to the outer surface of the heat-resistant mass are pressed into it and at the same time the solidifying mass is formed into a solid body (3). Method for producing a strand (1) of additional hair intended to be bonded to a strand (6) of its own hair for lengthening and / or thickening, in which a solid body (3) is formed therefrom from a malleable, heat-resistant material, which a thickened portion thereof in which the additional hair is trapped, characterized in that the solid body (3) is formed by means of a metal tube (8) which is threaded onto the strand (1) of the additional hair in the region (2) of the attached end; it is then externally exerted by pressure from several sides so as to form point-like depressions (9) in its casing over the height of this tube (8) one above the other, which are offset from each other, which extend into the inner space of the pressed metal tube (8). between hair.