JP2008081724A - Fabric bonding tape - Google Patents

Abstract

[PROBLEMS] To easily and temporarily fix the end portions of wet suits and other fabrics with a simple structure when the ends are joined and integrated using a joining tape having a hot melt adhesive layer. To do.
A fabric joining tape for covering the ends of fabrics 6A and 6B and joining the ends. This tape includes a hot-melt adhesive layer 3, and has a pressure-sensitive adhesive layer 5 on the surface of the hot-melt adhesive layer 3 for temporarily fixing the fabric bonding tape between the ends of the fabrics 6A and 6B.
[Selection] Figure 1

Description

The present invention relates to a fabric joining tape for joining wet suits and other fabrics together.
In this specification, “fabric” represents a broad concept including a sheet-like material for manufacturing a wet suit.

  For example, when manufacturing a wet suit, the ends of a plurality of fabrics cut into a predetermined shape to form the wet suit are butted against each other, and a joining tape called a seal tape is applied to the butted portion. By applying the pressure and heat treatment, the hot melt adhesive of the joining tape is melted or softened, and thereby the joining and unifying treatment of the butt portion and the waterproofing treatment are performed. At this time, a wet suit having a three-dimensional structure can be obtained by joining and integrating the fabrics by applying a joining tape along the curved fabric.

When the fabrics are joined and integrated using the sealing tape having the hot melt adhesive layer as described above, the fabrics to be joined and the joining tape are temporarily fixed before performing the pressure heating treatment. It is necessary to keep it. As a means for this temporary fixing, for example, Patent Document 1 proposes to sew a seal tape and a joint portion between fabrics together in advance. After such temporary fixing by sewing, heat sticking with a seal tape is performed. Alternatively, it is also possible to apply temporary fixing by spot-melting the hot-melt adhesive layer using a “trowel” or the like at a plurality of positions spaced along the length direction of the bonding tape. Has been done.
JP 2003-95191 A

  However, performing sewing as described in Patent Document 1 requires a great deal of labor, which leads to an increase in the cost of the product. Even when the hot-melt adhesive layer is melted in a spot manner, it is necessary to bend and integrate three-dimensionally by bending the fabric as described above. Moreover, since the hot melt layer is melted even though it is spot-like temporarily fixed, it is very difficult to correct it if it is melted in a state where positioning has failed.

  In view of this, the present invention solves such problems and temporarily fixes the ends of wet suits and other fabrics using a bonding tape having a hot melt adhesive layer. The purpose is to make it easy to stop with a simple structure.

  In order to achieve this object, the present invention provides a fabric bonding tape for bonding fabrics, comprising a hot melt adhesive layer, and the fabric bonding tape is applied to the fabric on the surface of the hot melt adhesive layer. A pressure-sensitive adhesive layer for temporarily fixing is provided.

  According to the present invention, a fabric bonding tape for covering the ends of the fabric and bonding the ends includes a hot melt adhesive layer, and the ends of the fabric are provided on the surface of the hot melt adhesive layer. A pressure-sensitive adhesive layer for temporarily fixing the fabric bonding tape is provided.

  According to the present invention, the hot melt adhesive layer is formed of a urethane-based resin, and the pressure-sensitive adhesive layer is formed of any one of a urethane-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a synthetic rubber-based pressure-sensitive adhesive. It is preferred that

  According to the present invention, with a simple configuration in which a pressure-sensitive adhesive layer is provided on the surface of a hot-melt adhesive layer, the fabric bonding tape can be temporarily fixed to the fabric to be bonded by the pressure-sensitive adhesive force of the pressure-sensitive adhesive layer. it can. An adhesive layer is present between the hot melt adhesive layer and the fabric, but the adhesive layer is formed by melting or softening together with the hot melt adhesive layer, or the adhesive layer is spotted. For example, the bonding tape can be securely bonded to the fabric by forming it so as to exist.

  FIG. 1 shows a cross-sectional structure of a fabric bonding tape 1 according to an embodiment of the present invention. Here, 2 is a base material layer, which is formed of a fabric such as a woven fabric or a knitted fabric. When the tape 1 is used for joining fabrics in a wet suit, it is preferable to use a stretchable knitted fabric such as nylon jersey or urethane film as the base material layer 2.

  Reference numeral 3 denotes a hot-melt adhesive layer, which is laminated on the base material layer 2. As the hot melt adhesive layer 3, a known material such as a urethane resin that melts or softens at about 130 to 150 ° C. can be used. Examples of such materials include ether urethane elastomers and ester urethane elastomers. The thickness is appropriately about 50 to 150 μm.

  An intervening layer 4 is provided between the hot melt adhesive layer 3 and the base material layer 2. This intervening layer 4 is formed by, for example, an adhesive layer for bonding the hot melt adhesive layer 3 and the base material layer 2 that have not yet exhibited adhesive strength at room temperature, or hot melt using a hot press machine. When the adhesive layer 3 is melted, it may be formed by a film layer for preventing the melted hot melt adhesive from exuding on the upper side of the base material layer 2 and sticking to the hot press machine. Is preferred.

  An adhesive layer 5 is formed on the surface of the hot melt adhesive layer 3. The pressure-sensitive adhesive layer 5 is formed of an adhesive material such as a urethane-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, or a synthetic rubber-based pressure-sensitive adhesive, and is integrated with the hot melt adhesive layer 3 by coating or transferring. ing. The thickness of the pressure-sensitive adhesive layer 5 is preferably 20 to 50 μm, and more preferably 30 ± 5 μm.

  1 and 2 show that the end portions of a pair of fabrics 6A and 6B are butted against each other, the butted portions are covered with the fabric bonding tape 1, and the tape 1 is butted against the fabrics 6A and 6B by the action of the adhesive layer 5. The state when temporarily fixed to the part is shown. In this state, the portion covered with the tape 1 is subjected to pressure and heat treatment by a hot press machine or the like to melt or soften the hot melt adhesive layer 3, so that this portion can be joined and integrated.

  In the case where the temporary fixing is inappropriate such as misalignment, the tape 1 is once peeled off from the butt portion of the fabrics 6A and 6B against the adhesive action of the adhesive layer 5 and then adhered. Temporary fixing can be performed again by the action of the agent layer 5.

  In order to perform reliable bonding by melting or softening the hot-melt adhesive layer 3, it is necessary that the molten or soft hot-melt adhesive penetrates the fabrics 6A and 6B well. For this purpose, the pressure-sensitive adhesive layer 5 should not inhibit the penetration of the molten hot-melt adhesive into the fabrics 6A and 6B. In order to achieve this purpose, the pressure-sensitive adhesive layer 5 is, for example, one that melts together with the hot melt adhesive when subjected to pressure heat treatment and then solidifies in the same manner as the hot melt adhesive, or pressurizes and heats. It is preferable that the film is broken when the treatment is performed and does not interfere with the penetration of the molten hot melt adhesive into the fabrics 6A and 6B.

  When the pressure-sensitive adhesive layer 5 is difficult to allow the melted or softened hot melt adhesive to penetrate into the fabrics 6A and 6B as described above, the pressure-sensitive adhesive is applied to the entire surface of the hot-melt adhesive layer 3. It is preferable not to form the layer 5 but to form the pressure-sensitive adhesive layer 5 in a spot-like manner. If it does in this way, the hot-melt-adhesive layer 3 will be partially exposed in the location where the adhesive layer 5 does not exist, and the melted or softened hot-melt adhesive will surely reach the fabrics 6A and 6B at least in this exposed portion. By soaking, good adhesion can be secured.

  FIG. 3 shows an example in which the pressure-sensitive adhesive layer 5 is formed so as to be spot-like. The figure (a) is the sectional view, the figure (b) is the bottom view, and the figure (a) shows the cross section along the AA line in the figure (b). That is, here, the pressure-sensitive adhesive layer 5 is formed on the surface of the hot-melt adhesive layer 3 so as to have a so-called diamond pattern with a rhombus check pattern. Thereby, the interspersed portions of the small-area pressure-sensitive adhesive layer 5 and the interspersed exposed portions of the hot melt adhesive layer 3 are alternately present. The area ratio between the interspersed part of the pressure-sensitive adhesive layer 5 and the exposed part of the hot-melt adhesive layer 3 is the required performance such as the temporary fixing adhesiveness of the fabric bonding tape 1 and the adhesive strength of the hot-melt adhesive layer 3. Based on this, it can set suitably.

  Specifically, when the pressure-sensitive adhesive layer 5 is formed of a urethane-based pressure-sensitive adhesive, the compatibility with the hot melt adhesive layer 3 generally formed of a urethane-based resin as described above is good. Therefore, it is preferable to form the pressure-sensitive adhesive layer 5 on the entire surface of the hot melt adhesive layer 3. In addition, since the urethane-based pressure-sensitive adhesive is flexible like the urethane-based resin forming the hot-melt adhesive layer 3, when the stretchable material is used for the base material layer 2 as described above, the entire tape 1 is used. Good stretchability can be imparted. For this reason, when the fabrics 6A and 6B are stretchable, when the fabrics 6A and 6B are curved, it is necessary to apply the tape 1 along the fabrics, and the joints between the fabrics 6A and 6B are the tapes 1 It is possible to cope with a case where the curve is in the direction of the surface.

  When the pressure-sensitive adhesive layer 5 is formed of an acrylic pressure-sensitive adhesive, the compatibility with the hot melt adhesive layer 3 generally formed of a urethane resin is poor, and the hot melt adhesive layer 3 is melted or softened. Therefore, when the pressure-sensitive adhesive layer 5 is formed on the entire surface of the hot-melt adhesive layer 3, the penetration of the hot-melt adhesive into the fabrics 6A and 6B is reduced. Cheap. For this reason, it is preferable to form the adhesive layer 5 so as to be scattered in a spot shape as described above. In addition, since the acrylic adhesive is relatively hard, for example, when the surfaces of the fabrics 6A and 6B are uneven, the adhesive layer 5 is broken by the pressing force during the pressure heating treatment, Based on this, it is possible to exhibit the outflow of the hot melt adhesive, that is, the penetration into the fabrics 6A and 6B.

  When the pressure-sensitive adhesive layer 5 is formed of a synthetic rubber-based pressure-sensitive adhesive, it completely melts with the softening or melting of the hot-melt adhesive when subjected to pressure and heat treatment, and then hot-melt bonding Solidify in the same way as the agent. For this reason, it can use for the aspect which forms the adhesive layer 5 in the whole surface of the hot-melt-adhesive layer 3 similarly to the case of a urethane type adhesive. As a specific example of the synthetic rubber-based pressure-sensitive adhesive, a synthetic rubber-based material sold under the product number: TS4700, TS4800, TS4800NT, etc. from No-Tape Trading Co. can be used. These materials have adhesiveness with ether type urethane elastomers and ester type urethane elastomers constituting the hot melt adhesive layer. Among these, TS4800 uses a resin that hardly yellows, and TS4800NT uses a resin that hardly yellows and does not contain toluene.

  In the case where the fabrics 6A and 6B are fabrics, and the bonding tape is adhered to the fabrics using an adhesive, the adhesive is likely to penetrate into the fabrics. Therefore, in the conventional technique, the adhesive is applied twice. It is customary. That is, the adhesive is soaked into the fabric by the first application and then applied to the fabric, and then the second application is performed as the main application, and this second application is used for the actual adhesive action. The first application is called “sealing”. However, when the fabric bonding tape according to the present invention is used, the tape is only heated once and applied to the fabrics as the fabrics 6A and 6B, and the bonding effect is exhibited at the same time. Can be made. This is because, according to the fabric bonding tape of the present invention, the pressure-sensitive adhesive layer 5 is added as compared with the conventional bonding tape, so that the pressure-sensitive adhesive layer 5 enters the inside of the cloth by pressing against the cloth. This is because the hot melt adhesive layer 3 is softened by heating and similarly enters the inside of the fabric to form an adhesive effect.

  A case where the fabrics 6A and 6B are materials for a wet suit will be described. As shown in FIG. 4, the material for the wet suit has a structure in which a nylon jersey layer 8 is laminated on the surface of the rubber layer 7. In the case of using a joining tape composed only of a conventional hot melt adhesive layer, hot melt adhesion is achieved by applying pressure to the nylon jersey layer 8 on the surface of the wetsuit material and pressurizing and heating the joining tape. For example, the urethane elastomer that forms the layer softens and enters between the constituent fibers of the nylon jersey layer 8 to exhibit a required adhesion function. However, the urethane elastomer constituting the hot melt adhesive layer does not have an adhesive action with the rubber layer 7, and therefore, only the adhesive with the nylon jersey layer 8 is performed.

  On the other hand, in the bonding tape 1 of the present invention, the pressure-sensitive adhesive layer 5 is formed on the surface of the hot-melt adhesive layer 3 as shown in the figure. , The adhesive tape 5 passes over the nylon jersey layer 8 after the adhesive tape 5 passes over the surface of the wet suit material as the fabrics 6A and 6B, and the rubber layer 7 And the rubber layer 7 is bonded and integrated, and the hot melt adhesive layer 3 enters between the constituent fibers of the nylon jersey layer 8. For this reason, it becomes possible to perform strong adhesion as compared with the conventional one in which only adhesion between the hot-melt adhesive layer and the nylon jersey layer is performed.

  In the case where the ends of the materials for the wet suit as the fabrics 6A and 6B are butted against each other, the ends of the materials are actually bonded to each other with the chloroprene-based adhesive layer 9 as shown in FIG. It is often joined via. Then, as shown in the figure, it is inevitable that the end surface of the adhesive layer 9 is exposed on the surface of the material and the exposed portion is slightly raised.

  FIG.5 (b) shows a mode that the butt | matching part of the same figure (a) was joined using the bonding tape 10 which has only the conventional hot-melt-adhesion layer 3, but does not have an adhesive layer. The hot melt adhesive layer 3 does not have an adhesive action with the rubber layer 7 as described above, and also has no adhesive action with the adhesive layer 9 exposed and raised as described above. For this reason, a slight gap 11 may be generated between the adhesive layer 9 and the hot melt adhesive layer 3 of the tape 10, and there is a possibility that the waterproof property as a wet suit is lowered. In an extreme case, the gap 11 is enlarged due to the expansion and contraction caused by the movement of the body after wearing the wet suit, and the tape 10 itself is peeled off from the butt portion between the fabrics 6A and 6B, which is a big problem in the waterproof property of the wet suit. May occur.

  On the other hand, if the bonding tape 1 of the present invention is used as shown in FIG. 5C and the above-described synthetic rubber-based pressure-sensitive adhesive is used as the pressure-sensitive adhesive layer 5, for example, the pressure-sensitive adhesive layer 5 is used as an adhesive. It can be adhered to layer 9. As a result, the generation of gaps as described above can be prevented, and a reliable waterproof effect can be achieved.

  When the fabric bonding tape 1 is used in, for example, a wet suit, it is often necessary to temporarily fix the tape 1 along a curve, and a large tension is expected to be applied to the tape. Therefore, in such a case, it is preferable that the pressure-sensitive adhesive layer 5 is formed on the entire surface of the hot-melt adhesive layer 3 to improve the pressure-sensitive adhesive performance, instead of the silicon pattern as shown in FIG.

  In the above description, the end portions of the fabrics 6A and 6B are butted together and covered with the bonding tape 1, but other modes other than the butting, for example, the end portions of the fabrics 6A and 6B are overlapped. The case where they are combined can also be carried out in the same manner.

FIG. 6 shows an example of another cross-sectional structure of the fabric bonding tape 1 of the present invention.
Here, in the tape 1 of FIG. 1A, the pressure-sensitive adhesive layer 5 is formed on one surface of the hot-melt adhesive layer 3, and the other surface of the hot-melt adhesive layer 3 has a thickness of, for example, about 15 μm. An intervening layer 4 composed of an ester urethane film, an ether urethane film or the like is formed. With such a structure, it can be used for joining urethane films as fabrics.

  The tape 1 in FIG. 2B is obtained by laminating hot melt adhesive layers 3 and 3 on both sides of an intervening layer 4 and further laminating pressure-sensitive adhesive layers 5 and 5. With such a configuration, as shown in FIG. 1 and FIG. 2, it is used when a pair of fabrics are joined to each other on their surfaces instead of joining the ends of the fabrics 6A and 6B. it can. For example, it can be suitably used when a patch or mark is pasted on a large cloth. Moreover, temporary fixing can be performed on both the pair of fabrics.

  When the intervening layer 4 is formed of a film layer in the tape 1 of FIG. 5B, the roughness of the fabric is different as a pair of fabrics, and therefore it is easy to enter the fabric when the hot melt adhesive layer 3 is melted. It can be preferably used for joining fabrics of different sizes. That is, when a fabric with a coarse fabric and a fabric with a fine fabric are joined on both sides of the tape 1, the melted hot melt easily enters the fabric with a coarse fabric, and if the intervening layer 4 is not present, most of the hot melt is generated. It gets into the cloth with coarse cloth, and it becomes difficult to get into the cloth with fine cloth. For this reason, the amount of hot melt entering the pair of fabrics becomes non-uniform, and it tends to be difficult to stably join the fabrics. On the other hand, the presence of the intervening layer 4 can prevent the occurrence of the non-uniformity as described above, and can stably join the fabrics having different fabric roughnesses. Moreover, because the adhesive layers 5 and 5 have the same effect as the “sealing” that causes the fabric to blend into the fabric by the first application in the second application as described above, By using the pressure-sensitive adhesive layers 5 and 5 and the intervening layer 4 together as shown in the figure, it is possible to exhibit good adhesion performance to both the pair of fabrics.

  In the tape 1 of FIG. 2C, hot-melt adhesive layers 3 and 3 are laminated on both surfaces of the intervening layer 4, and an adhesive layer 5 is laminated on one surface of the pair of hot-melt adhesive layers 3 and 3. Is. Such a structure can be used when a pair of fabrics are joined to each other in the same manner as in FIG. 5B, but is suitable when it is sufficient to temporarily fix only one of the fabrics. It is.

  The tape 1 in FIG. 4D is constituted only by the hot melt adhesive layer 3 and the pressure-sensitive adhesive layer 5. This case can also be used in the case where a pair of fabrics are joined to each other on their surfaces, but is suitable in the case where it is sufficient to temporarily fix only one fabric.

  The tape 1 in FIG. 5E is obtained by laminating pressure-sensitive adhesive layers 5 and 5 on both surfaces of the hot melt adhesive layer 3 as compared with the tape 1 in FIG. Also in this case, it can be used when a pair of fabrics are joined to each other on their surfaces, and temporary fixing can be performed on both of the pair of fabrics.

  In the case where the hot melt adhesive layer 3 and the pressure-sensitive adhesive layers 5 and 5 are incompatible with the tape 1 having the structure as shown in FIG. 6E, delamination is likely to occur at the interface between them. A configuration as shown can be employed. Here, as the hot-melt adhesive layer 3, a fiber formed of a hot-melt material is used in the form of a spider web, that is, a spunbond treatment. Then, since the hot-melt adhesive layer 3 has a space communicating with one surface and the other surface, the pressure-sensitive adhesive layers 5 and 5 enter the hot-melt adhesive layer 3 and entangle with the constituent fibers. Generation | occurrence | production of peeling can be prevented.

  As a material that can be used as the above-mentioned hot melt adhesive layer 3, for example, a urethane spunbond sold as “Espancione” by KB Seiren Co. can be cited as a result of the spunbond treatment. it can.

Example 1
As a fabric bonding tape, a tape having pressure-sensitive adhesive layers formed on both sides of a hot-melt adhesive layer was produced. That is, a hot melt adhesive layer having a thickness of 50 μm was formed using an ether-based urethane elastomer, and an adhesive layer having a thickness of 25 μm was formed on the entire surface using an acrylic material on both surfaces thereof. Further, a nylon jersey containing a silicon-based water repellent and used for a wet suit was layered on the adhesive layer on one side. Thus, a fabric bonding tape of Example 1 having a width of 20 mm was obtained.

  Then, the adhesive layer on the other side of the tape was put on the surface of a woven flat rubber used as an undergarment or the like as a fabric and pressed by hand to temporarily fix it.

  Next, using a plurality of samples in which the tape was temporarily fixed to the woven flat rubber in this way, each was subjected to pressure heating treatment under the conditions shown in Table 1 with a hot press apparatus, and the tape was thermally bonded to the fabric.

For each treatment condition with different heating temperature and heating time, prepare four heat-bonded samples, perform a peel test to grab one end of the tape and peel it from the fabric at a speed of 50 mm / min. The peel strength was measured. Table 1 shows the measurement results of the average value and the maximum value of the peel strength for the four samples.

Example 2
A pressure-sensitive adhesive layer having a thickness of 25 μm was formed by transfer on both surfaces of the same hot-melt adhesive layer as that of Example 1 using an acrylic material. This pressure-sensitive adhesive layer had a 5 mm-sided silicone pattern so that the area of the pressure-sensitive adhesive layer: the area of the exposed portion of the hot melt adhesive layer = 1: 1. A nylon jersey similar to that of Example 1 was overlaid on the adhesive layer on one side. Thus, a fabric bonding tape of Example 2 having a width of 20 mm was obtained.

  Using this fabric bonding tape, temporary fixing and thermal bonding were performed in the same manner as in Example 1, and a peel test was performed to measure the peel strength. Table 1 shows the measurement results of the average value and the maximum value of the peel strength for the four samples.

Example 3
A urethane-based material was applied on both sides of the same hot-melt adhesive layer as that in Example 1 to form an adhesive layer having a thickness of 25 μm. A nylon jersey similar to that of Example 1 was overlaid on the adhesive layer on one side. Thus, a fabric bonding tape of Example 3 having a width of 20 mm was obtained.

  Using this fabric bonding tape, temporary fixing and thermal bonding were performed in the same manner as in Example 1, and a peel test was performed to measure the peel strength. The results are shown in Table 1.

Example 4
A synthetic rubber-based material sold under the product number TS4700 from No-Tape Trading Co. on both sides of the same hot-melt adhesive layer as that of Example 1, and an ether-based urethane elastomer constituting the hot-melt adhesive layer, Those having adhesiveness with an ester-based urethane elastomer were respectively applied to the entire surface to form a pressure-sensitive adhesive layer having a thickness of 25 μm. A nylon jersey similar to that of Example 1 was overlaid on the adhesive layer on one side. Thus, a fabric bonding tape of Example 4 having a width of 20 mm was obtained.

  Using this fabric bonding tape, temporary fixing and thermal bonding were performed in the same manner as in Example 1, and a peel test was performed to measure the peel strength. The results are shown in Table 1.

Comparative Example 1
As a fabric bonding tape, only the same nylon jersey as that of Example 1 was adhered to one surface of the same hot-melt adhesive layer as that of Example 1, and no pressure-sensitive adhesive layer was formed. Therefore, the other surface of the hot melt adhesive layer was formed with the hot melt adhesive layer exposed. As a result, a fabric bonding tape of Comparative Example 1 having a width of 20 mm was obtained.

  Using this fabric bonding tape, only thermal bonding was performed without temporary fixing, and the peel strength was measured in the same manner as in Example 1. The results are shown in Table 1.

  When the fabric bonding tapes of Examples 1 to 4 were stacked on the surface of a woven flat rubber as a fabric and pressed by hand, the tapes could be favorably temporarily fixed by their adhesive strength. On the other hand, since the fabric bonding tape of Comparative Example 1 did not have an adhesive layer, even if it was manually pressed against the surface of the woven flat rubber as the fabric, it could not be temporarily fixed.

  Since the adhesive tape was formed on the entire surface of the hot melt adhesive layer in the fabric bonding tape of Example 1, the adhesive strength when the tape was thermally bonded to the fabric by performing a heat treatment with a hot press was too high. There wasn't.

  On the other hand, the fabric bonding tape of Example 2 was such that the hot melt adhesive layer was exposed with the pressure-sensitive adhesive layer as a silicone pattern, and this hot melt adhesive layer contributed to the adhesion to the fabric. The adhesive strength was higher than that of No. 1 tape, and the adhesive strength was comparable to that of the comparative example 1 in which the pressure-sensitive adhesive layer was not formed.

  The fabric bonding tape of Example 3 was formed with a urethane-based pressure-sensitive adhesive layer, but the adhesive force of heat bonding was much higher than that of Comparative Example 1. This is because the pressure-sensitive adhesive formed of a urethane-based material melts or softens together with the hot-melt adhesive during the pressure and heat treatment, and adheres to the fabric. This is presumed to be due to entering into a certain woven flat rubber layer.

  The fabric bonding tape of Example 4 was formed with a synthetic rubber-based pressure-sensitive adhesive layer, but although not as much as Example 3, the adhesive force of thermal bonding was much higher than that of Comparative Example 1. It was a thing. This is also presumably because the pressure-sensitive adhesive melted or softened together with the hot-melt adhesive during the heat treatment under pressure, but not as much as in Example 3.

Example 5
As a fabric bonding tape, a tape having an adhesive layer formed on one side of a hot melt adhesive layer was produced. That is, a hot-melt adhesive layer having a thickness of 150 μm is formed using an ether-based urethane elastomer, and the same acrylic material as used in Example 1 is used on the entire surface of one surface thereof to form a pressure-sensitive adhesive having a thickness of 25 μm. A layer was formed. Nylon jersey was laminated and integrated on the other surface of the hot melt adhesive layer via an ester urethane film having a thickness of 15 μm as an intervening layer. Thus, a fabric bonding tape of Example 5 having a width of 20 mm was obtained.

  Then, the pressure-sensitive adhesive layer on one side of the tape was temporarily fixed by overlapping it on the surface of the fabric of the wet suit as a fabric and pressing it by hand. The cloth of this wet suit was obtained by joining nylon jersey to one side of a sheet of chloroprene rubber having a thickness of 3 mm via a chloroprene adhesive.

  Next, using a plurality of samples in which the tape was temporarily fixed to the surface of the nylon jersey in the wetsuit fabric in this manner, a heat treatment was performed under the conditions shown in Table 2, and the tape was removed from the wetsuit. Heat bonded to the dough.

Three heat-bonded samples were prepared, and a peel test was performed in which one end of the tape was grasped and peeled from the fabric at a speed of 50 mm / min, and the peel strength at that time was measured. Table 2 shows the measurement results of the minimum value, maximum value, and average value of the peel strength for three samples.

Example 6
Instead of forming the acrylic pressure-sensitive adhesive layer on the entire surface of one side of the hot-melt adhesive layer as in Example 5, it was formed so as to have the same silicon pattern as in Example 2. And other than that manufactured the sample as the same as Example 5, and measured the peeling strength. The results are shown in Table 2.

Example 7
Instead of the acrylic material used in Example 5, an adhesive layer was formed of the same urethane material as used in Example 3. And other than that manufactured the sample as the same as Example 5, and measured the peeling strength. The results are shown in Table 2.

Example 8
Instead of the acrylic material used in Example 5, an adhesive layer was formed of the same synthetic rubber material as used in Example 4. And other than that manufactured the sample as the same as Example 5, and measured the peeling strength. The results are shown in Table 2.
Comparative Example 2
As a fabric bonding tape, only the same nylon jersey as that of Example 5 was adhered to the other side of the same hot melt adhesive layer as that of Example 5, and an adhesive layer was formed. Therefore, one surface of the hot melt adhesive layer was formed with the hot melt adhesive layer exposed. Thereby, the fabric bonding tape of Comparative Example 2 was obtained. Using the fabric bonding tape of Comparative Example 2, only the heat bonding was performed without temporarily fixing, and the peel strength was measured in the same manner as in Example 5. The results are shown in Table 2.

  These Examples 5 to 8 and Comparative Example 2 also showed the same tendency as in Examples 1 to 4 and Comparative Example 1 described above.

  Specifically, in the case where the pressure-sensitive adhesive layer was formed of the urethane-based material of Example 7, the peel strength was improved as compared with the case where only the hot melt adhesive layer of Comparative Example 2 was provided. This is presumably because the amount of urethane-based material increased by the amount of the pressure-sensitive adhesive layer, which contributed to the improvement in peel strength by joining with the nylon jersey layer in the wetsuit fabric.

  In the case where the pressure-sensitive adhesive layer was formed of the synthetic rubber material of Example 8, the peel strength was further improved. This is presumably because the hot-melt adhesive layer was bonded to the nylon jersey layer, and the synthetic rubber material constituting the pressure-sensitive adhesive layer was bonded and integrated with the rubber sheet in the wetsuit fabric. In Example 8, the synthetic rubber-based material on which the pressure-sensitive adhesive layer was formed was the same as that used in Example 4, and was sold under the product number: TS4700 from No Tape Trading. As described above, this synthetic rubber material also has adhesiveness with a hot melt adhesive layer formed of an ether urethane elastomer or an ester urethane elastomer. Therefore, it is speculated that a high peel strength as shown in Table 2 could be achieved due to this reason.

It is a figure which shows the cross-sectional structure of the tape for fabric joining of embodiment of this invention. It is a perspective view which shows the example which joins a cloth with the tape for cloth joining of FIG. It is a figure which shows the tape for fabric joining which formed the adhesive layer with the silicone pattern based on this invention. It is a figure which shows a mode when the raw material of a wet suit is joined using the tape for fabric joining of embodiment of this invention. It is a figure which shows a mode when the edge parts of the material of a wet suit are faced | matched and joined. It is a figure which shows the other example of the cross-sectional structure of the tape for fabric joining of this invention. It is a figure which shows the further another example of the cross-sectional structure of the tape for fabric joining of this invention.

Explanation of symbols

3 Hot-melt adhesive layer 5 Adhesive layer 6A Fabric 6B Fabric

Claims (3)

  A fabric bonding tape for bonding fabrics, comprising a hot melt adhesive layer, and an adhesive layer for temporarily fixing the fabric bonding tape to the fabric is provided on the surface of the hot melt adhesive layer. A tape for joining fabrics, characterized in that   A fabric joining tape for covering the ends of the fabric and joining the ends, and comprising a hot melt adhesive layer on the surface of the hot melt adhesive layer, the fabric between the ends of the fabric. A fabric bonding tape comprising an adhesive layer for temporarily fixing the bonding tape.   The hot melt adhesive layer is formed of a urethane-based resin, and the pressure-sensitive adhesive layer is formed of any one of a urethane-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a synthetic rubber-based pressure-sensitive adhesive. The fabric bonding tape according to claim 1 or 2.

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