WO2019021937A1

WO2019021937A1 - Adhesive touch and close fastener and gloves provided with adhesive touch and close fastener

Info

Publication number: WO2019021937A1
Application number: PCT/JP2018/027131
Authority: WO
Inventors: 明裕佐藤; 孝臣城所; 和田　弘
Original assignee: 伊藤忠プラスチックス株式会社; Sti株式会社; 株式会社三景
Priority date: 2017-07-24
Filing date: 2018-07-19
Publication date: 2019-01-31
Also published as: JP2019022599A; JP7121897B2

Abstract

An adhesive touch and close fastener which comprises a re-adhesive polyurethane gel layer (2) formed on at least one of mutually opposing faces to be joined together, wherein the re-adhesive polyurethane gel layer (2) is integrally formed by superposing the re-adhesive polyurethane gel layer (2), via a urethane-based or polyester-based hot melt adhesive layer (4), on the surface of a base material (3) disposed in the faces to be joined together.

Description

Adhesive surface fasteners and gloves with adhesive surface fasteners

The present invention relates to an adhesive hook-and-loop fastener and a method of manufacturing the same, and further comprises the adhesive hook-and-loop fastener in the slit portion for inserting a wrist, for example, when playing golf, baseball or other sports, in driving or other operations such as automobiles. The invention also relates to a glove with an adhesive hook-and-loop fastener that can also be applied.

Generally, when playing golf, baseball or other sports, driving or other work, gloves made of thin leather are used to protect the palm of the hand holding the club, bat or handle, etc. and to give a good fit. It is worn.

Since such gloves do not have sufficient elasticity required for removal and attachment to a thin leather, it is necessary to firmly put a hand in close contact with the palm and the back so as to fit the hand in a worn state. Therefore, a slit is formed in the wrist insertion portion of the glove to widen the insertion opening, and one that can be easily and reliably inserted and attached to the finger and the wrist is used.

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

The above-mentioned flaps can be locked with a button or the like on the overlapping surface, but the glove surface and the surface to be overlaid on the glove face through a pair of surface fasteners so as to be as bulky and as easy as possible. It is preferred by the consumer for the manner in which it can be locked.

The hooking mechanism of the hook-and-loop fastener has a pair of surfaces in which the hook-like, hook-like, and sawtooth-like fibers are raised and the side in which the fibers are closely gathered in a loop shape. By pressing the opposing surfaces against each other, the raised fibers are locked and both surfaces are in a stuck state.
If such surface fasteners are used, the opening width of the slit is appropriately expanded and the hand is sufficiently inserted into the glove, and then the opening width of the slit is optionally narrowed so that the glove may not be dislodged or detached It can be easily attached.

However, the above-described conventional glove with a hook and loop fastener has an unpleasant burr called a burr by releasing the locked state of the raising fibers and the loop when the hook and loop fastener is opened after the facing overlapping surfaces of the hook and loop fastener are closed and closed. A sound is generated, and in sports such as golf, it interferes with the player's mental concentration depending on the timing, which may be against manners.

Also, in the conventional surface fastener, the force for peeling the raised fibers and the loop exerts a load on the fabric by repeatedly putting on and taking off repeatedly, so the surface of the fabric is easily deformed in a curved shape, In the state, it may be easy to get caught in the surrounding clothes.

In order to make up for the shortcomings of conventional hook and loop fasteners, a means of attaching hook and loop fasteners and various other types of fastening pieces to the slit of golf gloves has been explored, and the use of adhesive resin is considered as one of them. (The following patent documents 2, claim 5).

Further, as an example of use of an adhesive hook-and-loop fastener using an adhesive resin, there is known a fastener which is capable of detachably coupling an overlapping portion such as a body or a sleeve of clothes (Patent Document 3 below).

JP, 2001-276293, A International Publication No. 2010/128689 JP-A-11-46815

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

At that time, as described in Patent Document 3, it is possible to form a pressure-sensitive adhesive layer by impregnating a porous fibrous base material with a tacky elastomer with respect to a fibrous base material (for example, woven fabric or non-woven fabric). However, it can not be fixed by impregnation to a non-porous substrate such as synthetic leather, and it is easy to stably fix the adhesive resin layer to various substrates via an adhesive. It was not. This is because the tacky resin contains a large amount of a plasticizer to ensure the softness necessary for its adhesiveness, and when the plasticizer transfers to the adhesive, the adhesive is softened so that sufficient adhesion is obtained. It is because you can not

In particular, with surface fasteners, adhesion with the substrate is likely to be reduced if mechanical deformation such as bending, breaking, or twisting is repeated by washing etc., and a weak re-adhesive resin layer with sufficient adhesion to the substrate is sufficient. It is difficult to obtain good durability. The same problem as described above also needs to be solved in a hook-and-loop fastener that locks a slit for expanding a shoe opening in a wrist insertion portion of a glove.

Then, the subject of this invention solves the above-mentioned problem and does not peel the re-adhesive resin layer fully equipped with re-peelability and re-adhesion property which can be used for an adhesive surface fastener with respect to a base material. To ensure that it can be fixed securely, and the required removability and re-adhesion can be exhibited with good use durability, to be an adhesive surface fastener that withstands repeated use and washing, and to be able to be manufactured efficiently It is.

Moreover, in the glove with the adhesive surface fastener which can open and close a slit by a surface fastener, it is a subject to solve the same problem as the above.

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

In the adhesive surface fastener of the present invention configured as described above, the hot melt adhesive contains a thermoplastic polyurethane resin or a thermoplastic polyester resin as a main component, and for example, a relatively relatively high temperature of about 120 ° C. to 140 ° C. It melts at a low temperature, and spreads thinly on the surface of the polyurethane gel layer in the molten state with good affinity, and can be adhered by cooling without hardening of the re-adhesive polyurethane gel layer.

If the urethane-based hot melt adhesive layer is a reactive hot melt adhesive layer in particular, the extension reaction and the crosslinking reaction of the molecular chain proceed due to the moisture contained in the air and the polyurethane gel layer even after cooling, Because the adhesive cures without heating, the re-adhesive polyurethane gel layer adheres more durablely and sufficiently.

Also, no migration of the plasticizer from the re-adhesive polyurethane gel layer is observed in the urethane-based or polyester-based hot melt adhesive layer after curing.
Therefore, the hot melt adhesive layer maintains the characteristics of a soft, re-adhesive and releasable adhesive surface fastener without impairing its self-adhesive characteristics and durability in use.

In other words, the re-adhesive polyurethane gel layer of the adhesive hook-and-loop fastener is adhesively fixed by the specific hot-melt adhesive layer mainly composed of the thermoplastic polyurethane resin or the thermoplastic polyester resin. In addition to being quiet when peeling off the overlapping surface, it becomes an adhesive surface fastener having ease of use and washing durability as well as being adaptable to body shapes such as the back of a soft hand, for example. It becomes a glove with a slit.

It is preferable that it is a polyurethane gel which consists of a reactant of an isocyanate component less than a theoretical amount with respect to a polyol component so that the above-mentioned re-adhesive polyurethane gel layer has the softness which was more excellent in adhesiveness. If a polyol component constituting a soft segment is selected from those having a required molecular weight and having a functional group number of the required molecular weight in the polyurethane gel in the reaction product, it becomes a soft self-adhesive polyurethane gel to a certain extent.

Such a re-adhesive polyurethane gel layer is required as a surface fastener used for clothes and gloves to adjust the blending amount of the plasticizer and the soft segment, etc. and to set the hardness of durometer type C to 20 to 40. It is preferable in order to make the adhesiveness and the easy releasability of the overlapping surface compatible.

In addition, such a re-adhesive polyurethane gel layer is repeatedly opened and closed many times as an adhesive hook-and-loop fastener, and when used for a long period of time, its adhesiveness gradually decreases due to dust etc. drifting in the air However, if the dust and the like are washed away by washing with water, the initial tackiness 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 due to friction between attached dusts and to enhance washability by washing with water more sufficiently. Is also preferred.

In addition, the base material of the overlapping surface of the adhesive surface fastener may be a soft material at least one of which is flexible, for example, natural leather, artificial leather, or a known fabric made of natural fibers or synthetic fibers. In this way, a soft re-adhesive polyurethane gel layer is overlaid and integrally provided via a flexible urethane-based reactive hot melt adhesive, and the glove with a hook-and-loop fastener that is easily compatible with the hand by utilizing the softness of the material. It can be configured.

The method for producing the adhesive surface fastener used for such a glove with a surface fastener or the like is not particularly limited. For example, uncured urethane is applied to at least one surface of the opposing overlapping surface of the adhesive surface fastener. The re-adhesive polyurethane gel layer is superposed and integrated via a hot melt adhesive of a system or polyester system.

Preferably, simultaneously with or after such a step, the surface of the re-adhesive polyurethane gel layer is brought into pressure contact with the uncured modified silicone polymer adhesive layer integral with the support layer. Then, 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 form a flat surface of the re-adhesive polyurethane gel layer.
In this way, efficient shaping of the flat-faced re-adhesive polyurethane gel layer and efficient fixation to the substrate can be achieved.

Since the adhesion between the surface of the re-adhesive polyurethane gel layer and the modified silicone polymer adhesive layer is weaker than the adhesion between the urethane-based or polyester-based hot melt adhesive and the re-adhesive polyurethane gel layer, flat support is obtained. The flat surface of the modified silicone polymer adhesive layer formed of the layer can be reliably transferred to the re-adhesive polyurethane gel layer.

The adhesive surface fastener according to the present invention is required because the re-adhesive polyurethane gel layer is integrally provided on at least one surface of the opposing overlapping surfaces through the urethane or polyester hot melt adhesive. There is an advantage that a soft, self-adhesive polyurethane gel layer can be secured to the opposing overlapping surfaces of the adhesive surface fastener without compromising the inherent self-adhesiveness.

Further, in the method of producing the adhesive surface fastener, the modified silicone polymer adhesive layer can be peeled off to form a re-adhesive polyurethane gel layer having a flat surface, so that the adhesive surface fastener can be efficiently produced.

Moreover, the glove with the adhesive hook and loop fastener can be locked between the glove surface and the back surface of the locking piece superposed thereon via the pair of adhesive hook and loop fasteners, and the soft overlapping surface of the adhesive hook and loop fastener is peeled off The adhesive hook-and-loop fastener has the advantage of becoming a glove with a hook-and-loop fastener that is soft and has a durability that is durable against repeated use and that is soft and compatible with the shape of the back of a hand.

Sectional view of the adhesive surface fastener of the first embodiment Sectional drawing explaining the manufacturing process of the adhesive surface fastener of 1st Embodiment The perspective view of the glove with an adhesive hook-and-loop fastener of a 2nd embodiment

Embodiments of the present invention will be described below based on the attached drawings.
As shown in FIG. 1, in the adhesive surface fastener 1 according to the first embodiment, both surfaces of the

overlapping surfaces

2 a and 2 a facing each other are formed of the re-adhesive polyurethane gel layer 2.
The re-adhesive polyurethane gel layer 2 is formed by integrally forming the re-adhesive polyurethane gel layer 2 on the surface of the base material 3 on the overlapping surface via the urethane or polyester hot melt adhesive layer 4. It is.

As an embodiment other than illustrated, only one overlapping surface 2a of the opposing overlapping surfaces is formed by the re-adhesive polyurethane gel layer 2, and the other surface is covered with a synthetic resin layer such as acrylic or polyolefin or metal. It is good also as an adhesive hook-and-loop fastener 1 which can be formed with a flat and good adhesion film layer etc., and can be stuck, re-sticked and re-peeled.

The polyurethane which is the material of the re-adhesive polyurethane gel layer 2 is preferably one in which a crosslinkable isocyanate compound having a small molecular weight is further reacted with a polyol component less than the theoretical amount. The constituent weight fraction of the hard segment (isocyanate compound) in the polyurethane gel composition using this is reduced, the hardness becomes low, and the adhesion can be improved.

As such a polyurethane resin, a relatively soft commercially available self-adhesive resin can be used, and for example, Hypergel Sheet (trade name, hardness Asker C30) manufactured by EXCIL Corporation can be used.

The above-mentioned polyurethane resin is obtained by reacting the following raw materials.
That is, a polyol having a primary hydroxyl group at the end of two functional groups having a molecular weight of 700 to 2,000, or a polyol having a primary hydroxyl group at the ends of three molecular groups having a molecular weight of 6,000 to 8,000 A polyurethane resin reacted with less than the theoretical amount of polyphenylpolymethylene polyisocyanate.

Polyols having a functional group number of 2 and a primary hydroxyl group at the end are polytetramethylene polyoxyglycol, ε-caprolactone type polyol, β-methyl-δ-valerolactone type polyol, polyester type polyol and carbonate type polyol And other known materials.

Examples of polyols having a functional group number of 3 and partially having a primary hydroxyl group at the end include 1,2-polyopyrenes using an active hydrogen compound having a trifunctional number such as glycerin, trimethylolpropane or hexanetriol as an initiator. A known compound may be used which ring-opening addition-polymerizes an oxide and then ring-opening addition polymerization of ethylene oxide.

The polyphenyl polymethylene 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 heat resistance is lacking, and if the number of functional groups is greater than 2.8, the rubber hardness is more than 5, which is not preferable.

The polyphenyl polymethylene polyisocyanate may be used as a prepolymer which is reacted with the aforementioned polyol which is less than the theoretical amount using the known technique to leave the active isocyanate group at the end, but the remaining amount of terminal active isocyanate group is 29 ~ 23 wt%, preferably 29-27 wt% is more preferred.

A polyol having 2 functional groups and having a primary hydroxyl group at the end is required to be reacted with polyphenylpolymethylene polyisocyanate which is less than the theoretical amount. The equivalent ratio of isocyanate group (NCO) of isocyanate to hydroxyl group (OH) of the polyol, ie, NCO / OH is preferably 0.48 to 0.41. When this equivalent ratio exceeds 0.48, the rubber hardness of the composition obtained is not preferable because it becomes a brittle composition exceeding 5 and when it is less than 0.41, a composition lacking in shape retention and sufficient Unfavorable because it is impossible to obtain

In addition, a polyol having 3 functional groups and partially having a primary hydroxyl group at the end is also required to be reacted with polyphenylpolymethylene polyisocyanate which is less than the theoretical amount, and the above NCO / OH is 0.7 to 0. .61 is preferred. If this equivalent ratio exceeds 0.7, the rubber hardness of the resulting composition is preferably 5 or more, which is not preferable because it becomes a brittle composition, and if it is less than 0.61, it is preferable because it lacks shape retention. Absent.

In order to carry out the urethanization reaction between polyphenyl polymethylene polyisocyanate which is a raw material of such a re-adhesive polyurethane gel and a polyol, a suitable urethanization catalyst can be used. It is possible to use well-known catalysts, such as a tertiary amine compound and an organic metal compound, as this urethanization catalyst. For example, triethylenediamine, N, N'-dimethylhexamethylenediamine, N, N'-dimethylbutanediamine, lead octylate, dibutyltin laurate and the like are preferable.

In this way, it is possible to employ one containing the required amount of plasticizer so that the re-adhesive polyurethane gel layer is of durometer type C hardness 20-40.

Examples of the plasticizer include plasticizers for conventional polyurethane resins, such as dioctyl phthalate, dibutyl phthalate, trischloroethyl phosphate, tris chloropropyl phosphate and the like.

When a plasticizer such as the above is added, the hardness of the composition decreases and the adhesion improves as the amount of addition increases. Such 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 main components.

Such a compounding is preferable for adhesive hook-and-loop fasteners, but even if it is too soft, the adhesive strength is rather reduced. More preferably, a plasticizer is used per 100 parts by weight of the total of the polyol and the isocyanate. 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 order to improve the durability and stability of the composition, one or more thermal stabilizers, antioxidants, UV absorbers, UV stabilizers, fillers and the like may be used as the stabilizer, as long as no trouble occurs. Or it can also be used in mixture of 2 or more types. Furthermore, in addition to those described above, pigments, dyes, flame retardants, antifoaming agents, dispersants, surfactants, water adsorbents and the like can be added as appropriate.
The thermal decomposition temperature of the re-adhesive polyurethane gel thus obtained is 200 to 250 ° C., does not embrittle even at -30 ° C., is also excellent in heat resistance and cold resistance, and has a property of being resistant to yellowing can get.

Further, since the re-adhesive polyurethane gel is a self-adhesive polyurethane gel containing silicone as an additive component, it is preferable to suppress the entanglement due to the friction between the attached dusts and to enhance the cleaning property by water washing.

Further, 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 well-known pigment It is also possible to make a colored layer by adding (ink, etc.) or a dye.

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, and is melted at a relatively low temperature of about 120 ° C. to 140 ° C., for example. Have the following characteristics.
The thermoplastic polyurethane resin has thermoplasticity among polymers having a urethane group in the molecular structure consisting mainly of a difunctional polyol, diisocyanate and glycol, and is a polyester based material of raw materials such as the polyol and the like The melting temperature can also be adjusted depending on the type of polyether or the like.

In addition, when a urethane-based reactive hot melt adhesive is used for the re-adhesive polyurethane gel layer, the moisture in the air and the hydroxyl groups contained in the re-adhesive polyurethane gel layer even after being cooled from the molten state The chain extension and the crosslinking reaction also proceed by this, and the adhesion with the material of the glove and the locking piece proceeds because the adhesion with the material of the glove and the locking piece progresses, and the adhesion surface is integrated with durability.

As a commercial item of a urethane type hot melt adhesive, for example, a product of Cedham Co., Ltd .: Eceran (registered trademark), a reactive hot melt adhesive manufactured by Hitachi Chemical Polymer Co., Ltd. (melting point 110 ° C.), a product of DIC: Tyforce (registered trademark) ), Manufactured by Nippon Mata Co., Ltd .: Elfan (registered trademark) UH or the like can be used.

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

Examples of the thermoplastic polyester resin include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyglycolic acid, poly (L-lactic acid), poly (3-hydroxybutyrate), poly (ε-caprolactone), polyethylene A succinate, a polybutylene succinate, a polybutylene succinate adipate, or a mixture of one or more of these, and the like can be mentioned.
As a commercial product of a polyester-based hot melt adhesive, for example, Elfan-PH (registered trademark) manufactured by Nippon Mata Co., Ltd. can be adopted.

Also, at least one surface of the overlapping surface of the adhesive surface fastener using such a self-adhesive polyurethane gel is re-adhesive polyurethane via an uncured urethane or polyester hot melt adhesive. The method for producing the adhesive surface fastener, in which the step of overlapping and integrating the gel layers is essential, is as follows, in which the surface of the re-adhesive polyurethane gel layer is made flat as the mating surface of the adhesive surface 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, the surface of the re-adhesive polyurethane gel layer 2 is uncured denatured unitary with the flat support layer 6 consisting of a flexible sheet or film. When the silicone polymer adhesive layer 5 is overlapped and pressed, and the modified silicone polymer adhesive layer 5 is peeled from the surface of the re-adhesive polyurethane gel layer 2 from the end after curing of the modified silicone polymer adhesive layer 5, re-adhesiveness The surface of the polyurethane gel layer 2 can be easily and reliably formed flat.

Preferably, the support layer 6 is a sheet-like material formed of a non-stretchable material and formed flat in advance. Such materials include, for example, polyethylene terephthalate, polycarbonate, cellulose plastic, polyamide, polyether ketone and the like.

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

The locking piece 14 has a length that can extend from one side of the widthwise sides of the slit 13 and straddle the slit 13 and be superimposed on the glove surface on the other side. The synthetic resin (for example, PET resin) film 15 attached to the upper portion and the back surface of the locking piece 14 stacked thereon constitute a pair of adhesive surface fasteners 10, which can be locked by self-adhesiveness .

This adhesive surface fastener 10 is a re-adhesive polyurethane gel layer in which at least one surface of the opposing overlapping surfaces is integrally laminated via a urethane-based reactive hot melt adhesive layer 4 (see FIG. 1). It is formed of two.

It is preferable that the base material 3 of the locking piece 14 be of the same quality as that of a material such as gloves, although it is suitably soft but it is a well-known woven fabric according to the need for strength and flexibility and the demand for design. A material such as a leather (natural leather or artificial leather), a resin or rubber sheet, etc. can be used and provided in a known shape such as a flap shape or a belt shape.

In the application of the adhesive surface fastener according to the embodiment, the surface fastener can be conventionally applied to a glove, a portion requiring opening and closing with clothes, a portion requiring temporary overlapping and holding, or household goods etc. It is also possible to use parts.

The material of the glove (including the locking piece) of the embodiment is a well-known glove material adopted in accordance with the use of sports and work, and is made of cloth, thin skin, film, woven fabric, net, etc. As a specific example of the thin skin-like material, natural leather such as cows and pigs may be used, or artificial leather may be used. Artificial leather here means including synthetic leather.

Although the form of the gloves is also illustrated as having five fingers, gloves of other well-known forms such as mittens, gloves without a fingertip portion, or gloves in a removable form can be used.
Although the slit 13 has a V-shaped cut shape, it may be a plurality of slits of two or more in addition to an L shape, a wave shape, or the like.

A sheet-like hot melt adhesive (CEDAM Co., Ltd .: ECELAN (registered trademark)) is superimposed on the surface of the back side (base material) of the locking piece for adjusting slit width of golf gloves made of artificial leather, and A Hypergel sheet (Hardness Asker C30, thickness 0.5 mm) manufactured by EXCIL Corporation is stacked as a re-adhesive polyurethane gel layer, and the main part is heated and pressurized at 130 ° C. and pressure 0.35 fkg / cm ² for 20 seconds. , One overlapping surface of the adhesive hook and loop fastener was manufactured.

Further, in the same manner as described above, the overlapping surface of the adhesive hook-and-loop fastener on the glove is formed on one side of one side of the V-shaped slit formed in the wrist insertion portion of the glove. An adhesive hook-and-loop fastener in which the surfaces of the re-adhesive polyurethane gel layers face each other and overlap each other on the glove by sewing the hooking piece on the other side in the width direction of the slit I manufactured a glove.

The same procedure as in Example 1 was repeated except that the overlapping surface of the adhesive surface fastener on the glove in Example 1 was formed by sewing a polyethylene terephthalate (PET) film (thickness 50 μm). A tacky surface fastener made of a tacky polyurethane gel layer and a surface made of a PET film facing each other and overlapping and peelably sticking was manufactured, and a glove with tacky hook fastener was manufactured.

About the obtained glove with a hook and loop fastener of Examples 1 and 2, in order to check the use durability, washing of the adhesive hook and loop fastener once every day is performed at a frequency of using 18 holes once at a golf course per day. Was used for a total of 3 days of use, but no noise was generated when attaching or removing the adhesive hook and loop fastener. In addition, the adhesive hook-and-loop fastener is a glove with a hook-and-loop fastener provided with a soft, easily adaptable shape such as the back of a hand, and a reliable locking property and durability of a gel-like self-adhesive resin enduring repeated use. Was confirmed in actual use.

Next, in accordance with the following experimental example, the adhesiveness of the re-adhesive polyurethane gel layer and the reactive hot melt adhesive layer of various resin systems was compared and evaluated.
[Experimental Example 1-4]
As in Example 1 (see FIG. 1), a sheet-like hot melt adhesive layer 4 (A, B, C, D) is overlaid on the surface of a substrate 3 made of synthetic leather, knit or T / C broad. , Hyper gel sheet manufactured by Excyl Corporation having re-adhesive polyurethane gel layer 2 thereon (hardness Asker C30, adhesive sheet of 0.5 mm thickness fixed to PET film, abbreviated as HG below) Test pieces corresponding to one overlapping surface of the adhesive surface fastener by integrating all layers by direct heating at 140 ° C. for 20 seconds at a pressure of 0.35 fkg / cm ² using a flat press. (Width 20 mm, length 70 mm) was produced.

Using this test piece, the HG is 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 peel off. The required tensile force was measured and shown in Table 1 as adhesion (N).

In addition, the following commercial item was used for the hot melt adhesive (A, B, C, D) used for each experiment example, respectively.
Hot melt adhesive (A): Polyurethane manufactured by Nippon Mata Co., Ltd. Elfan UH203
Hot melt adhesive (B): EVA manufactured by Nippon Mata Co. ELFAN OH501
Hot melt adhesive (C): Nippon Matei polyester type Elfan PH413
Hot melt adhesive (D): Polyamide-based Elfan NT120 manufactured by Nippon Mata Co., Ltd.

As apparent from the results in Table 1, EVA and polyolefin-based adhesive surface fasteners are integrally provided with a re-adhesive polyurethane gel layer overlaid and integrated via a polyurethane-based or polyester-based hot melt adhesive. The re-adhesive polyurethane gel layer is firmly fixed to the peel which is usually difficult to adhere as compared with the polyamide-based hot melt adhesive, without impairing the inherent self-adhesiveness. It was evaluated that the layer structure was excellent as a layer structure provided on the overlapping surface.

DESCRIPTION OF

SYMBOLS

1, 10 Adhesive surface 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 Footwear 13 Slit 14 Locking piece 15 Synthetic resin film

Claims

The adhesive surface fastener is provided with a re-adhesive resin layer provided on at least one surface of the opposing overlapping surfaces, and the re-adhesive resin layer is a urethane-based or polyester-based hot material on the substrate surface of the overlapping surface. An adhesive hook-and-loop fastener comprising a re-adhesive polyurethane gel layer superimposed and integrally provided via a melt adhesive layer.
The adhesive surface fastener according to claim 1, wherein the re-adhesive polyurethane gel layer is a self-adhesive polyurethane resin comprising a reaction product of an isocyanate component less than a theoretical amount with respect to a polyol component.
The adhesive surface fastener according to claim 1 or 2, wherein the re-adhesive polyurethane gel layer is a durometer type C hardness 20-40 re-adhesive polyurethane gel layer.
A slit for expanding a shoe opening is formed in a wrist insertion portion of a glove, and a slit for adjusting a slit width which is integrated with one side of both sides in the width direction of the slit and can be overlapped and locked on the other side. In a glove having a piece,
The locking piece is a locking piece capable of locking the surface of the glove on the other side and the back surface of the locking piece stacked thereon via an adhesive hook-and-loop fastener, and the adhesive hook-and-loop fastener faces the other A glove with an adhesive surface fastener characterized in that a re-adhesive polyurethane gel layer is laminated and integrally formed on at least one surface of the laminated surface via a urethane or polyester hot melt adhesive layer. .
The glove with a hook and loop fastener according to claim 4, wherein the glove is a sports glove made of natural leather or artificial leather.
A re-adhesive polyurethane gel layer is laminated and integrated on at least one surface of the opposing overlapping surface of the adhesive surface fastener according to claim 1 via an uncured urethane or polyester hot melt adhesive. In the method of manufacturing the adhesive surface fastener, wherein the step of
Simultaneously with or after the essential step, the surface of the re-adhesive polyurethane gel layer is pressure-bonded with an uncured modified silicone polymer adhesive layer integral with the support layer, and after curing of the modified silicone polymer adhesive layer, The adhesive surface 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 form the surface of the re-adhesive polyurethane gel layer flat. Manufacturing method.