JP7121897B2 - Gloves with adhesive hook-and-loop fasteners and adhesive hook-and-loop fasteners - Google Patents

Description

The present invention relates to an adhesive hook-and-loop fastener and a method for manufacturing the same. It relates to a glove with an adhesive hook-and-loop fastener that can also be applied.

In general, gloves made of thin leather are used to protect the palms of hands that grip clubs, bats, handles, etc., and to provide a good fit when playing sports such as golf, baseball, driving, or performing other work. are worn.

Since the thin leather of such a glove does not have sufficient stretchability for putting on and taking off the glove, it is necessary to firmly insert the hand into the glove so that the glove fits the hand while the glove is worn and is brought into close contact with the palm and the back of the hand. For this reason, a glove is used in which a slit is formed in the wrist insertion part of the glove to widen the opening of the glove so that the fingers and wrist can be easily and reliably inserted and worn.

Moreover, it is known that such a slit is provided with a flap that extends from one of both sides in the width direction and can be superimposed on the surface of the glove on the other side across the slit (Patent Document 1). .

The above-mentioned flaps can be locked with a button or the like on the overlapping surface. Consumers prefer the mode in which it is possible to lock by

The locking mechanism of the hook-and-loop fastener has a pair of surfaces, one on which hook-shaped, mushroom-shaped, and sawtooth-shaped fibers are raised and the other on which loop-shaped fibers are densely raised, By pressing these facing surfaces against each other, the raised fibers are locked together and the two surfaces are stuck together.
If such a hook-and-loop fastener is used, the opening width of the slit is widened appropriately so that the hand can be fully inserted into the glove, and then the opening width of the slit is arbitrarily narrowed to prevent the glove from slipping or coming off. Easy to put on.

However, the above-mentioned conventional gloves with hook-and-loop fasteners, after the facing overlapping surfaces of the hook-and-loop fasteners are put together and closed, when the hook-and-loop fasteners are opened, the raised fibers and the loops are released from the locked state, resulting in an annoying crunching. In sports such as golf, the sound is generated, and depending on the timing, it disturbs the player's concentration, which is also bad manners.

In addition, when the conventional hook-and-loop fastener is repeatedly put on and taken off, the fabric surface is easily deformed into a curved shape because the force to pull off the raised fibers and loops puts a burden on the fabric. In this state, it may become easier to get caught on surrounding clothes.

In order to make up for the shortcomings of conventional hook-and-loop fasteners, methods for attaching hook-and-loop fasteners to the slits of golf gloves and other fixing pieces for various mechanisms have been explored, and the use of adhesive resin is being considered as one of these methods. (Patent document 2, claim 5).

As an example of the use of an adhesive hook-and-loop fastener using an adhesive resin, there is known a fastener capable of detachably connecting overlapped parts such as the body and sleeves of clothes (Patent Document 3).

JP-A-2001-276293 WO2010/128689 JP-A-11-46815

However, in the conventional adhesive hook-and-loop fastener described above, it is required that the adhesive resin layer is formed in a state with as high adhesive strength as possible, that is, formed as soft as possible and adhered to the base material of the hook-and-loop fastener with a strong force.

At that time, as described in Patent Document 3, an adhesive layer can be formed by impregnating a porous fiber base material with an adhesive elastomer into a fiber base material (for example, a textile fabric or a non-woven fabric). However, it cannot be fixed by impregnation to non-porous substrates such as synthetic leather, and it is easy to stably fix the adhesive resin layer to various substrates via an adhesive. it wasn't This is because the adhesive resin contains a large amount of plasticizer in order to ensure the necessary softness for its adhesive strength. is not possible.

In particular, hook-and-loop fasteners tend to lose adhesion to substrates when they are repeatedly deformed by mechanical bending, folding, twisting, etc., such as by washing. It is difficult to obtain sufficient durability in use. It is also necessary to solve the above-mentioned problems with hook-and-loop fasteners for locking slits for widening the opening of the glove at the wrist insertion part.

Therefore, the object of the present invention is to solve the above-described problems, and to provide a re-adhesive resin layer having sufficient re-peelability and re-adhesiveness that can be used for adhesive hook-and-loop fasteners and that does not peel off from the base material. To provide a self-adhesive hook-and-loop fastener which can be surely fixed in such a way that it can exhibit originally required removability and re-adhesiveness with good durability in use, which can withstand repeated use and washing, and which can be efficiently manufactured. is.

Moreover, it is a subject to solve the same problem as the above also in the glove with an adhesive hook-and-loop fastener which can open and close a slit with a hook-and-loop fastener.

In order to solve the above problems, in the present invention, an adhesive hook-and-loop fastener is provided with a re-adhesive resin layer on at least one of the facing overlapping surfaces, and the re-adhesive resin layer A structure in which a re-adhesive polyurethane gel layer is superimposed on the mating surface of the base material via a urethane-based or polyester-based hot-melt adhesive layer and integrally provided is adopted.

In the adhesive hook-and-loop fastener of the present invention constructed as described above, the hot-melt adhesive contains a thermoplastic polyurethane resin or a thermoplastic polyester resin as a main component. It melts at a low temperature, spreads thinly on the surface of the polyurethane gel layer with good affinity in the melted state, and hardens by cooling to adhere to the re-adhesive polyurethane gel layer without altering its properties.

If the urethane-based hot-melt adhesive layer is a reactive hot-melt adhesive layer in particular, even after cooling, the molecular chain extension reaction and cross-linking reaction proceed due to the moisture contained in the air and the polyurethane gel layer. The re-adhesive polyurethane gel layer is more durable and sufficiently adheres because it cures without heating.

Further, no migration of the plasticizer from the re-adhesive polyurethane gel layer is observed in the cured urethane-based or polyester-based hot-melt adhesive layer.
Therefore, the hot-melt adhesive layer maintains the properties of the adhesive hook-and-loop fastener, which is soft and has good re-adhesiveness and removability, without impairing its self-adhesive properties and durability in use.

In other words, the re-adhesive polyurethane gel layer of the adhesive hook-and-loop fastener is compatiblely adhered and fixed by a specific hot-melt adhesive layer whose main component is thermoplastic polyurethane resin or thermoplastic polyester resin, and the hook-and-loop fastener is an adhesive hook-and-loop fastener that is quiet when peeling off the overlapping surfaces, is soft and easily conforms to the body shape such as the back of the hand, and has durability in use and durability in washing. Gloves with slits.

It is preferable that the re-adhesive polyurethane gel layer is a polyurethane gel composed of a reactant of an isocyanate component less than the theoretical amount with respect to a polyol component so that the re-adhesive polyurethane gel layer has excellent adhesiveness and flexibility. If the polyol component constituting the soft segment is selected to have a required molecular weight and a relatively large number of functional groups in the polyurethane gel in the reactant, a soft, self-adhesive polyurethane gel can be obtained to some extent.

Such a re-adhesive polyurethane gel layer is required for hook-and-loop fasteners used for clothes and gloves by adjusting the blending amount of the plasticizer and soft segment and setting it to a durometer type C hardness of 20 to 40. It is preferable in order to achieve both adhesiveness and easy releasability of the overlapping surfaces.

In addition, such a re-adhesive polyurethane gel layer is repeatedly opened and closed as an adhesive hook-and-loop fastener, and when used for a long period of time, the adhesiveness gradually decreases due to the adhesion of dust, etc. floating in the air. However, if the dust and the like are washed off with water, the original adhesiveness can be restored.

The re-adhesive polyurethane gel layer is a re-adhesive polyurethane gel layer containing silicone as an additive component in order to suppress entanglement of adhering dust due to friction and sufficiently improve washability by washing with water. is also preferred.

In addition, at least one of the substrates of the overlapping surfaces of the adhesive hook-and-loop fastener may be made of a flexible and soft material, such as a known fabric made of natural leather, artificial leather, or natural fiber or synthetic fiber. As a result, a soft re-adhesive polyurethane gel layer is layered and integrated via a flexible urethane-based reactive hot-melt adhesive. Can be configured.

The manufacturing method of the adhesive hook-and-loop fastener used for such gloves with hook-and-loop fasteners is not particularly limited. The re-adhesive polyurethane gel layers are laminated and integrated via a hot-melt adhesive of polyester or polyester.

Preferably, simultaneously with or after such a step, an uncured modified silicone polymer adhesive layer integrated with the support layer is overlaid and pressed against the surface of the re-adhesive polyurethane gel layer. After curing of the modified silicone polymer adhesive layer, the modified silicone polymer adhesive layer is peeled off from the surface of the re-adhesive polyurethane gel layer to flatten the surface of the re-adhesive polyurethane gel layer.
By doing so, the re-adhesive polyurethane gel layer having a flat surface can be efficiently molded and fixed to the substrate efficiently.

The adhesive strength between the surface of the re-adhesive polyurethane gel layer and the modified silicone polymer adhesive layer is weaker than the adhesive strength between the urethane-based or polyester-based hot-melt adhesive and the re-adhesive polyurethane gel layer. Said flat surface of the layer-molded modified silicone polymer adhesive layer can be reliably transferred to the re-adhesive polyurethane gel layer.

In the adhesive hook-and-loop fastener of the present invention, a re-adhesive polyurethane gel layer is integrally provided on at least one of the facing overlapping surfaces via a urethane-based or polyester-based hot-melt adhesive. Advantageously, the soft, self-adhesive polyurethane gel layer is securely fixed to the opposing overlapping surfaces of the adhesive hook-and-loop fastener without impairing its intrinsic self-adhesion.

In addition, in the method for producing an adhesive hook-and-loop fastener, the modified silicone polymer adhesive layer can be peeled off to form a re-adhesive polyurethane gel layer having a flat surface, so the adhesive hook-and-loop fastener can be efficiently produced.

In addition, in the glove with adhesive hook-and-loop fastener, the front surface of the glove and the back surface of the locking piece that overlaps the glove surface can be locked via a pair of adhesive hook-and-loop fasteners, and the soft overlapping surface of the adhesive hook-and-loop fastener can be peeled off. The adhesive hook-and-loop fastener does not generate noise when worn, and the adhesive hook-and-loop fastener is durable enough to withstand repeated actual use.

Sectional view of the adhesive hook-and-loop fastener of the first embodiment Sectional views for explaining the manufacturing process of the adhesive hook-and-loop fastener of the first embodiment. The perspective view of the glove with an adhesive hook-and-loop fastener of 2nd Embodiment.

An embodiment of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, in the adhesive hook-and-loop fastener 1 of the first embodiment, both opposing overlapping surfaces 2a, 2a are formed of re-adhesive polyurethane gel layers 2. As shown in FIG.
The re-adhesive polyurethane gel layer 2 is integrally formed by laminating the re-adhesive polyurethane gel layer 2 on the surface of the base material 3 on the overlapping surface via a urethane-based or polyester-based hot-melt adhesive layer 4. is.

As an embodiment other than the illustrated one, only one of the facing overlapping surfaces 2a is formed with the re-adhesive polyurethane gel layer 2, and the other surface is coated with a synthetic resin layer such as acrylic or polyolefin or metal. Alternatively, the adhesive hook-and-loop fastener 1 may be formed of a film layer that is flat and has good adhesion, and is capable of adhesion, re-adhesion, and re-peeling.

Polyurethane, which is the material of the re-adhesive polyurethane gel layer 2, is preferably obtained by reacting a polyol component with a crosslinkable isocyanate compound having a small molecular weight in an amount smaller than the theoretical amount. The constituent weight percentage of the hard segment (isocyanate compound) in the polyurethane gel composition using this is reduced, resulting in low hardness and improved adhesion.

As such a polyurethane resin, a commercially available relatively soft self-adhesive resin can be used. For example, Hyper Gel Sheet (trade name, hardness Asker C30) manufactured by Exeal Corporation can be used.

The above polyurethane resin is obtained by reacting the following raw materials.
That is, a polyol with a functional group number of 2 and a molecular weight of 700 to 2,000 having a primary hydroxyl group at the terminal or a polyol with a functional group number of 3 and a molecular weight of 6,000 to 8,000 partially having a primary hydroxyl group at the terminal , a polyurethane resin reacted with less than the theoretical amount of polyphenylpolymethylene polyisocyanate.

The polyols having a functional group number of 2 and terminal primary hydroxyl groups include polytetramethylene polyoxyglycol, ε-caprolactone-based polyol, β-methyl-δ-valerolactone-based polyol, polyester-based polyol and carbonate-based polyol. It is selectively adopted from known materials such as

Examples of polyols having a functionality of 3 and partially having a primary hydroxyl group at the terminal include 1,2-propylene with an active hydrogen compound having a functionality of 3, such as glycerin, trimethylolpropane, or hexanetriol, as an initiator. A known compound that causes ring-opening addition polymerization of oxide and then ring-opening addition polymerization of ethylene oxide can be used.

The polyphenylpolymethylene polyisocyanate described above preferably has a functional group number of 2.5 to 2.8. If the number of functional groups is less than 2.5, the rubber lacks heat resistance.

Polyphenylpolymethylene polyisocyanate may be used as a prepolymer that is reacted with less than the theoretical amount of the aforementioned polyol using a known technique to leave active isocyanate groups at the ends, but the residual amount of the terminal active isocyanate groups is 29. ~23% by weight, preferably 29-27% by weight is more preferred.

Polyols with a functionality of 2 and having primary hydroxyl groups should be reacted with less than the stoichiometric amount of polyphenylpolymethylene polyisocyanate. The equivalent ratio of the isocyanate group (NCO) of the isocyanate to the hydroxyl group (OH) of the polyol, that is, NCO/OH, is preferably 0.48 to 0.41. When this equivalent ratio exceeds 0.48, the rubber hardness of the obtained composition exceeds 5, which is not preferable because the composition becomes brittle. Unfavorable because you can't get things.

In addition, polyols with a functional number of 3 and partially having primary hydroxyl groups at their terminals also need to be reacted with less than the theoretical amount of polyphenylpolymethylene polyisocyanate, and the above NCO/OH is 0.7 to 0. .61 is preferred. When this equivalent ratio exceeds 0.7, the rubber hardness of the obtained composition exceeds 5, which is not preferable because the composition becomes brittle. do not have.

An appropriate urethanization catalyst can be used to cause the urethanization reaction between the polyphenylpolymethylene polyisocyanate and the polyol, which are raw materials for such a re-adhesive polyurethane gel. As this urethanization catalyst, it is possible to use a known catalyst such as a tertiary amine compound or an organometallic compound. For example, triethylenediamine, N,N'-dimethylhexamethylenediamine, N,N'-dimethylbutanediamine, lead octylate, dibutyltin laurate and the like are suitable.

Thus, a re-tackifying polyurethane gel layer can be employed that contains the required amount of plasticizer such that it has a durometer type C hardness of 20-40.

Types of plasticizers include general plasticizers for polyurethane resins such as dioctyl phthalate, dibutyl phthalate, trischloroethyl phosphate and trischloropropyl phosphate.

When a plasticizer such as those mentioned above is added, the hardness of the composition decreases and the adhesive strength increases as the amount added increases. Such a plasticizer is preferably added in an amount of 5 parts by weight or more per 100 parts by weight of the total amount of the polyol and isocyanate as the main components.

When blended in this manner, the adhesive strength of the adhesive hook-and-loop fastener is favorable, but the adhesive strength is rather reduced even if the adhesive is excessively soft. is added in an amount of 5 to 30 parts by weight, and it is particularly preferable to add a plasticizer in the range of 10 to 20 parts by weight.

In addition, in order to improve the durability and stability of the composition, as stabilizers, heat stabilizers, antioxidants, ultraviolet absorbers, ultraviolet stabilizers, fillers, etc., may be used as long as there is no problem. Alternatively, two or more kinds can be mixed and used. Furthermore, pigments, dyes, flame retardants, antifoaming agents, dispersing agents, surfactants, moisture adsorbents, etc. may be appropriately added in addition to those mentioned above.
The re-tackifying polyurethane gel thus obtained has a thermal decomposition temperature of 200 to 250°C, does not become brittle even at -30°C, has excellent heat resistance and cold resistance, and does not easily yellow. can get.

In addition, it is preferable that the re-adhesive polyurethane gel is a self-adhesive polyurethane gel containing silicone as an additive component, thereby suppressing entanglement of adhering dust due to friction and enhancing washability by washing with water.

In addition, such a re-adhesive polyurethane gel layer is preferably a transparent layer in consideration of the case where the substrate surface to which it is adhered is a printing surface, and if necessary, a known pigment (Ink etc.) or dyes may be added to form a colored layer.

The urethane-based or polyester-based hot-melt adhesive layer used in the present invention is mainly composed of a thermoplastic polyurethane resin or a thermoplastic polyester resin, respectively, and melts at a relatively low temperature of, for example, about 120°C to 140°C. It has the property of
The thermoplastic polyurethane resin has thermoplasticity among polymers containing urethane groups in the molecular structure mainly composed of a bifunctional polyol, diisocyanate and glycol. The melting temperature can also be adjusted depending on the type of polyether system.

In addition, if a urethane-based reactive hot-melt adhesive is used for the re-adhesive polyurethane gel layer, moisture in the air and hydroxyl groups contained in the re-adhesive polyurethane gel layer can be removed even after cooling from the molten state. Also, chain extension and cross-linking reaction proceed and good adhesion is achieved, so adhesion with the material of the glove or locking piece progresses, and the adhesion surface is reliably integrated with good durability.

Examples of commercially available urethane-based hot melt adhesives include Eceran (registered trademark) manufactured by Seedam Co., Ltd.; ), ELFAN (registered trademark) UH manufactured by Nihon Matai Co., Ltd., and the like can be used.

The polyester-based hot-melt adhesive used in the present invention uses a thermoplastic polyester resin as a main component and has the same property of melting at a relatively low temperature as described above.

Thermoplastic polyester resins include, for example, polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyglycolic acid, poly(L-lactic acid), poly(3-hydroxybutyrate), poly(ε-caprolactone), polyethylene succinate, polybutylene succinate, polybutylene succinate adipate, or mixtures of one or more of these.
As a commercially available polyester-based hot-melt adhesive, for example, ELFAN-PH (registered trademark) manufactured by Nihon Matai Co., Ltd. can be used.

In addition, a re-adhesive polyurethane is applied to at least one of the facing overlapping surfaces of the adhesive hook-and-loop fastener using such a self-adhesive polyurethane gel via an uncured urethane-based or polyester-based hot-melt adhesive. The method for manufacturing the adhesive hook-and-loop fastener, which requires the step of stacking and integrating the gel layers, is as follows: the surface of the re-adhesive polyurethane gel layer is flattened as the mating surface of the adhesive hook-and-loop fastener. It can be formed efficiently.

That is, as shown in FIG. 2, at the same time as or after the above-mentioned essential steps, an uncured modified polymer is applied to the surface of the re-adhesive polyurethane gel layer 2 integrally with a flat support layer 6 made of a flexible sheet or film. The silicone polymer adhesive layers 5 are overlapped and pressed against each other, and after curing of the modified silicone polymer adhesive layer 5, the modified silicone polymer adhesive layer 5 is peeled off from the surface of the re-adhesive polyurethane gel layer 2 from the end, whereby re-adhesiveness is achieved. The surface of the polyurethane gel layer 2 can be easily and reliably flattened.

It should be noted that the support layer 6 is preferably a sheet-like material that is formed flat in advance and is made of a non-stretchable material. Examples of such materials include polyethylene terephthalate, polycarbonate, cellulose plastic, polyamide, and polyetherketone.

As shown in FIG. 3, a glove 11 with a hook-and-loop fastener according to a second embodiment of the present invention has a slit 13 formed in the wrist insertion part of the glove body made of artificial leather for widening the opening 12. A locking piece 14 is provided which is integrated with one side of both sides in the width direction of 13 and is overlapped and locked on the other side.

The locking piece 14 extends from one side of the slit 13 in the width direction, straddles the slit 13, and has a length that allows it to be superimposed on the glove surface on the other side. A synthetic resin (for example, PET resin) film 15 attached to the instep and the rear surface of the locking piece 14 superposed thereon constitute a pair of adhesive hook-and-loop fasteners 10, which can be locked by self-adhesiveness. .

This adhesive hook-and-loop fastener 10 has a re-adhesive polyurethane gel layer integrally laminated with a urethane-based reactive hot-melt adhesive layer 4 (see FIG. 1) on at least one of the facing overlapping surfaces. 2.

It is preferable that the base material 3 of the locking piece 14 is made of the same material as gloves or the like because it is moderately soft. , leather (natural leather or artificial leather)-like materials, resin or rubber sheets, and the like, and can be provided in a well-known shape such as a flap shape or a belt shape.

In addition to gloves, the adhesive hook-and-loop fastener of the embodiment can be applied to parts of clothes that need to be opened and closed, parts that need to be temporarily overlapped and held, or household goods, etc., where hook-and-loop fasteners can be applied conventionally. A portion can also be used.

The material of the glove (including the locking piece) of the embodiment is a well-known glove material that is adopted according to the purpose of sports or work, and is made of cloth, thin skin, film, woven fabric, net, or the like. Specific examples of the thin-skin material include natural leathers of cows and pigs, and artificial leathers. Artificial leather as used herein includes synthetic leather.

Although the gloves are illustrated as having five fingers, other known types of gloves, such as mitten gloves, gloves without fingertips, or removable gloves, can be used.
Although the slit 13 has a V-shaped cut shape, it may be L-shaped, wave-shaped, or a plurality of slits of two or more.

A sheet-like hot-melt adhesive (manufactured by Seedom Co., Ltd.: Eceran (registered trademark)) is placed on the surface of the back side (base material) of the latching piece for adjusting the slit width of the artificial leather golf glove, and on top of it As a re-adhesive polyurethane gel layer, a hypergel sheet (hardness Asker C30, thickness 0.5 mm) manufactured by Exeal Corporation is superimposed, and the main part is heated and pressed at 130 ° C. and a pressure of 0.35 fkg / cm ² for 20 seconds. , produced one mating surface of the adhesive hook-and-loop fastener.

In addition, in the same manner as described above, the overlapping surface of the adhesive hook-and-loop fastener on the glove is formed on one of the widthwise sides of the V-shaped slit formed in the wrist insertion portion of the glove, on one side of the instep. A stop piece is sewn on the other side of the slit in the width direction, and the surfaces of the re-adhesive polyurethane gel layer are overlapped to face each other on the glove to produce an adhesive hook-and-loop fastener that adheres releasably, and the adhesive hook-and-loop fastener Manufactured gloves.

In Example 1, except that the overlapping surface of the adhesive hook-and-loop fastener on the glove was formed by sewing a polyethylene terephthalate (PET) film (thickness: 50 μm), it was repeated in exactly the same manner as in Example 1. An adhesive hook-and-loop fastener in which the adhesive polyurethane gel layer and the surface made of the PET film face each other and overlap each other, and the adhesive hook-and-loop fastener is releasably adhered was produced, thereby producing a glove with the adhesive hook-and-loop fastener.

In order to examine the durability in use of the obtained gloves with hook-and-loop fasteners of Examples 1 and 2, the adhesive hook-and-loop fasteners were washed with water once per day at the frequency of using 18 holes on a golf course once a day. was repeated for a total of 3 days, but no noise was generated when the adhesive hook-and-loop fastener was attached or removed. Moreover, the adhesive hook-and-loop fastener is soft and easily adapts to the shape of the back of the hand, etc., and the gel-like self-adhesive resin is a glove with an adhesive hook-and-loop fastener that has a reliable locking property and durability that can withstand repeated use. was confirmed in actual use.

Next, the following experimental examples were used to compare and evaluate the adhesive compatibility between the re-adhesive polyurethane gel layer and various resin-based reactive hot-melt adhesive layers.
[Experimental example 1-4]
In the same manner as in Example 1 (see FIG. 1), sheet-like hot-melt adhesive layers 4 (A, B, C, D) are superimposed on the surface of the base material 3 made of synthetic leather, knit or T/C broad. , a hypergel sheet manufactured by Exeal Corporation having a re-adhesive polyurethane gel layer 2 thereon (hardness Asker C30, adhesive sheet with a thickness of 0.5 mm fixed to a PET film, hereinafter abbreviated as HG). and integrated all layers by direct heating at 140 ° C. for 20 seconds at a pressure of 0.35 fkg / cm ² using a flat press, and a test piece corresponding to one overlapping surface of the adhesive hook-and-loop fastener (width 20 mm, length 70 mm) was produced.

Using this test piece, the HG was peeled off from the substrate 3 so that the hot melt adhesive layer (A, B, C, D) 4 and the re-adhesive polyurethane gel layer (HG) 2 were separated. The required tensile force was measured and shown in Table 1 as adhesive force (N).

The hot-melt adhesives (A, B, C, and D) used in each experimental example were the following commercially available products.
Hot melt adhesive (A): Polyurethane Elfan UH203 manufactured by Nihon Matai Co., Ltd.
Hot melt adhesive (B): EVA-based ELFAN OH501 manufactured by Nihon Matai Co., Ltd.
Hot-melt adhesive (C): Polyester Elfan PH413 manufactured by Nihon Matai Co., Ltd.
Hot melt adhesive (D): Polyamide-based ELFAN NT120 manufactured by Nihon Matai Co., Ltd.

As is clear from the results in Table 1, adhesive hook-and-loop fasteners in which re-adhesive polyurethane gel layers are stacked and integrally provided via a polyurethane-based or polyester-based hot-melt adhesive are EVA, polyolefin-based, The re-adhesive polyurethane gel layer is firmly fixed to synthetic leather, which is normally difficult to adhere to compared to polyamide-based hot-melt adhesives, without losing its original self-adhesiveness. It could be evaluated that the structure was excellent as a layer structure provided on the overlapping surfaces.

1, 10 Adhesive hook-and-loop fastener 2 Re-adhesive polyurethane gel layer 3 Base material 4 Reactive hot-melt adhesive layer 5 Modified silicone polymer adhesive layer 6 Support layer 11 Glove 12 Opening 13 Slit 14 Locking piece 15 Synthetic resin film

Claims (5)

It consists of an adhesive hook-and-loop fastener provided with a re-adhesive resin layer on at least one surface of the facing overlapping surfaces, and the re-adhesive resin layer is a urethane-based or polyester-based adhesive on the surface of the base material of the overlapping surfaces. A self-adhesive hook-and-loop fastener in which a re-adhesive polyurethane gel layer having a durometer type C hardness of 20 to 40 is superimposed and integrally provided via a melt adhesive layer. 2. The adhesive hook-and-loop fastener according to claim 1, wherein the re-adhesive polyurethane gel layer is a self-adhesive polyurethane resin comprising a reactant of an isocyanate component in a less than stoichiometric amount with respect to a polyol component. A slit is formed in the wrist insertion part of the glove to widen the opening of the glove, and the latch for adjusting the slit width is integrated with one side of both sides in the width direction of the slit and can be overlapped and latched on the other side. In a glove with strips,
The locking piece is a locking piece in which the surface of the glove on the other side and the back surface of the locking piece overlapping the glove surface can be locked via an adhesive hook-and-loop fastener, and the adhesive hook-and-loop fasteners face each other. A re-adhesive polyurethane gel layer with a durometer type C hardness of 20 to 40 is laminated and integrally provided on at least one of the overlapping surfaces via a urethane-based or polyester-based hot-melt adhesive layer. A glove with an adhesive hook-and-loop fastener, characterized by: 4. The glove with hook-and-loop fastener according to claim 3 , wherein the glove is a sports glove made of natural leather or artificial leather. A durometer type C hardness of 20 to 40 is applied to at least one of the opposing overlapping surfaces of the adhesive hook-and-loop fastener according to claim 1 via an uncured urethane-based or polyester-based hot-melt adhesive. In the method for producing an adhesive hook-and-loop fastener, wherein the step of stacking and integrating the re-adhesive polyurethane gel layers of
Simultaneously with or after the essential steps, an uncured modified silicone polymer adhesive layer integrated with a support layer is overlaid and pressed against the surface of the re-adhesive polyurethane gel layer, and after curing of the modified silicone polymer adhesive layer, 2. The adhesive hook-and-loop fastener according to claim 1, wherein the modified silicone polymer adhesive layer is peeled off from the surface of the re-adhesive polyurethane gel layer to flatten the surface of the re-adhesive polyurethane gel layer. manufacturing method.

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