JP2002161253A - Lamination method of air-permeable laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamination method of an air-permeable laminate at a low cost without needing a special device used in a method such as a dot method and further without lowering a commercial value due to the residue of a conspicuous trace such as just liner stripe. SOLUTION: This lamination method of an air-permeable laminated comprises simultaneously and together reciprocating two comb-type squeegees 6 disposed in parallel to each other at a constant distance in the direction rectangular to the moving the direction of the air-permeable sheet S1, thereby removing an adhesive coated on the surface material while leaving the adhesive in an approximately dot-like pattern or a fine pattern to form a continuous air- permeable part drying the remaining adhesive, and then laminating another air-permeable sheet S2 to the dried adhesive side of the first air-permeable sheet S1 to form an air-permeable portion in the adhesive layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a supporter,
The present invention relates to a method of bonding a laminated material mainly worn on a human body, such as a belly-wrap or a waist protection material, and more particularly to a method of bonding a permeable laminated material having a permeable portion in an adhesive layer.

[0002]

2. Description of the Related Art For example, cloth / adhesive layer / cloth, or cloth /
When a laminated material such as an adhesive layer / open-cell foam / cloth is mounted on a human body to be used, it is necessary that the laminated material itself has air permeability. In this case, since the cloth and the open-cell foam are originally air-permeable materials, it is necessary for the adhesive layer to have air-permeability by some means in order for the entire laminated material to have air-permeability.

Various methods have been proposed for imparting air permeability to the adhesive layer. Typical methods include a method using a hot-melt type web-like adhesive such as a saturated polyester, a dot method, and the like. A stripe method and the like can be given. The dot method is a method in which an adhesive is applied in a large number of dots (dots) on a sheet material having air permeability so that a portion to which the adhesive is not applied has air permeability. The stripe method is a method in which an adhesive is applied to the entire surface of a sheet material, and a part of the adhesive layer is removed in a straight line (stripe) shape with a squeegee or the like so that the part has air permeability.

[0004]

However, each of the above methods has the following problems. That is,
The method using a hot-melt web-type adhesive is expensive, and the dot method requires special equipment for applying the adhesive in a dot-like manner, so there is a problem in equipment, and the stripe method is the simplest. Although the apparatus is simple, traces of stripes often appear clearly on the surface of the finished product, which inevitably reduces the commercial value.

The present invention solves these problems, and does not require a special device such as the dot method, and does not reduce the commercial value by leaving conspicuous traces such as linear stripes. It is an object of the present invention to provide a method for bonding a breathable laminated material.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides two comb-shaped squeegees which are parallel to each other at regular intervals in a direction perpendicular to the direction of movement of a breathable sheet material. By reciprocating, the adhesive applied on the sheet material is removed while leaving it in a substantially dot-like or fine pattern to form a continuous permeable portion, and the remaining adhesive is dried to form another permeable sheet material. And providing a portion having air permeability to the adhesive layer by laminating the adhesive layer.

According to the present invention, two comb-shaped squeegees which are parallel to each other at a predetermined interval in a direction perpendicular to the moving direction of the release sheet material are simultaneously reciprocated together.
The adhesive applied on the release sheet material is removed while leaving it in a substantially dotted or fine pattern, and after drying the remaining adhesive, the adhesive is transferred to a breathable sheet material, and the release sheet material is removed. A method of laminating a breathable laminated material, characterized in that a continuous breathable portion is provided in an adhesive layer by bonding another breathable sheet material after peeling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for bonding a breathable laminate according to the present invention will be described in detail with reference to the embodiment shown in the drawings. FIG. 1 is a front view showing an example of a laminating apparatus to which the laminating method according to the present invention is applied, FIG. 2 (a) is a partial plan view of the laminating apparatus viewed from above, and FIG. It is the side view.

In FIG. 1, reference numeral 1 denotes a supply roll for supplying one breathable sheet material S1 such as cloth to be bonded to each other;
Reference numerals 2 and 3 denote feeding rollers, and a storage tank 4 is provided over substantially the entire surface of the air-permeable sheet material S1 fed by the two rollers 2.3.
In this configuration, the liquid adhesive A stored in the inside is applied by the application roll 5. After a part of the adhesive is removed by a pair of squeegees 6 arranged in a direction perpendicular to the moving direction of the sheet material, the air-permeable sheet material S1 to which the adhesive A has been applied is removed. It is dried by 7 and guided between the laminating rollers 8 and 9.

On the other hand, the other air-permeable sheet material S2 to be bonded to the sheet material S1 is sequentially fed out from the feed roll 10 and guided together with the sheet material S1 between the laminating rollers 8 and 9 so that the two sheet materials S1 are bonded together. S2 is bonded and sequentially wound up on the winding roll 15 via the guide roller 11 and the fixing rollers 12 to 14.

Each of the squeegees 6 is shown in FIG.
As shown in (b), the lower end is provided with a scraping claw 6a at a predetermined interval, and is formed in a substantially comb-like shape. The scraping claws 6a of both the squeegees 6 are approximately in this embodiment. They are offset by a half pitch. The two squeegees 6 are integrally fixed at predetermined intervals in the moving direction of the sheet material S1 by connecting blocks 16 provided at both ends of the squeegees 6 as shown in FIG. 1
The squeegees 6, 6 can be moved in the left-right direction in the drawing, that is, in the direction perpendicular to the moving direction of the sheet material S1, by holding the slider 17 provided integrally with the slidable member 17 on the supporting member 18. . Further, the scraping claw 6a of each squeegee 6 is configured to be constantly pressed against the sheet material S1 with a predetermined pressure by a spring or the like omitted in the drawing.

In the drawing, reference numeral 20 denotes a driving means for moving the squeegees 6 in the left and right directions in the drawing. In this embodiment, a peripheral cam 21 is used, and is formed on the peripheral surface of the cam 21. The cam follower 22 provided on the connection block 16 is engaged with the cam groove 21a having the corrugated shape. When the peripheral cam 21 is rotated at a predetermined speed in synchronization with the movement of the sheet material S1 in the direction of arrow a in FIG. 2A, the squeegees 6 advance and retreat simultaneously in the left and right directions in FIG. The adhesive A applied on the sheet material S1 is sequentially scraped in a wavy shape by the scraping claw 6a of the squeegee 6.
As a result, the adhesive A remains substantially in a spindle shape as shown in FIG.

The sheet material S1 and the sheet material S2 are adhered to each other by the spindle-shaped adhesive A remaining in the form of a spindle. Since no or almost no agent remains, it is possible to maintain good air permeability even after laminating both sheet materials S1 and S2.

In the above embodiment, the adhesive on the sheet material S1 is corrugated by the scraping claws 6a of the squeegees 6 by using the peripheral cam 21 as the driving means 20 for moving the squeegees 6 forward and backward. For example, as shown in FIG. 3, the screw rod 24 is rotated forward and reverse by a reversible motor 23, and both squeegees 6 are moved forward and backward at a constant speed via a nut 25 and the like screwed thereto. You may. In this case, the adhesive A applied on the sheet material S1 is sequentially scraped in a zigzag shape by the scraping claws 6a of the squeegees 6 to leave the adhesive A almost in a diamond shape as shown in FIG. Can be. Other configurations are the same as those in FIG.

By changing the structure of the driving means 20, the distance between the squeegees 6, and the pitch of the scraping claws 6a, etc., the adhesive can be left in a substantially dot-like shape having various plane shapes. You can do it.

Further, in the above-described embodiment, the adhesive is directly applied to one of the sheet materials S1 to be bonded to each other and then a part of the adhesive is scraped off. For example, the adhesive is applied in advance on release paper or the like. Then, a part thereof may be scraped and then transferred onto one sheet material S1, and FIG. 4 shows an example of this.

That is, in the embodiment of FIG. 4, an adhesive A is applied to the release paper R fed from the release paper feed roll 31 by the application roller 5 or the like in the same manner as in FIG.
After a part of the adhesive is scraped off, the adhesive is transferred to one sheet material S1 by transfer rollers 32 to 34 via a dryer 7. The release paper R after the transfer can be wound around a winding roll 35 and used repeatedly. The other sheet material S2 is a laminating roller 3
It is configured to be fed between 6.37 and bonded to the sheet material S1. Other configurations are the same as those of the above-described embodiment. Members having the same functions are denoted by the same reference numerals and the description thereof will not be repeated.

As described above, when an adhesive is previously applied to release paper or the like, and a part of the adhesive is scraped and then transferred to the sheet material S1, for example, a sheet material such as a stretchable sheet material or a coarsely woven cloth is used. In addition, there is an advantage that the adhesive can be easily formed in a dot shape even in a sheet material or the like where it is difficult to apply the adhesive.

The present invention can be applied to various sheet materials as long as they are in the form of a sheet having air permeability. The present invention can also be applied to a material in which a cloth is stuck on both sides of a cushion material made of the same. In this case, the cushioning material and the cloth on both sides thereof may be bonded to each other as described above, or a cushioning material layer may be formed by directly applying a synthetic resin to one surface of one cloth. The other cloth may be stuck on the surface of the above in the manner described above.
In any of the above cases, by forming the adhesive in a dot-like or substantially dot-like shape as described above, it is possible to maintain good air permeability even after lamination.

[0020]

As described above, the method of laminating the air-permeable laminate according to the present invention has the above-described structure, so that the cost is lower than the method using a hot-melt web-type adhesive and the dot method is used. This is an excellent bonding method that does not have such facility problems and does not cause the stripes to clearly appear on the surface of the finished product to lower the commercial value. Since the obtained air-permeable laminate is a complete air-permeable laminate having air permeability to the adhesive layer, the supporter,
It is extremely suitable as a laminated material mainly worn on the human body, such as a belly wrap or a waist protection material.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a laminating apparatus to which a laminating method according to the present invention is applied.

2A is a plan view of a part of the laminating apparatus of FIG. 1 as viewed from above, and FIG.

FIG. 3 is a plan view showing a modified example of the laminating apparatus to which the laminating method according to the present invention is applied.

FIG. 4 is a front view showing another embodiment of the bonding apparatus to which the bonding method according to the present invention is applied.

[Explanation of symbols]

 1, 10 Air-permeable sheet material supply roll 2, 3, 22, 23 Supply roll 4 Adhesive storage tank 5 Application roll 6 Comb squeegee 6a Scraping claw 7 Dryer 8, 9, 36, 37 Laminating roller 11 Guide roller 12 -14 Fixing roller 15 Take-up roll 16 Connecting block 17 Slider 18 Support member 20 Drive means 21 Peripheral surface cam 21a Cam groove 22 Cam follower 23 Reversible motor 24 Screw rod 25 Nut 31 Release paper supply roll 32-34 Transfer roller 35 Release paper take-up roll

Claims (2)

[Claims] 1. An adhesive applied on a sheet material by simultaneously reciprocating two reciprocating comb-shaped squeegees at a predetermined interval in a direction perpendicular to the moving direction of the breathable sheet material. By removing while leaving a substantially dotted or fine pattern to form a continuous permeable portion, drying the remaining adhesive and bonding another permeable sheet material, the adhesive layer has a portion having air permeability. A method for laminating a breathable laminated material, comprising: 2. An adhesive applied to a releasable sheet material by simultaneously reciprocating two comb-shaped squeegees parallel to each other at a predetermined interval in a direction perpendicular to the moving direction of the releasable sheet material. Is removed while leaving a substantially dotted or fine pattern, the remaining adhesive is dried, the adhesive is transferred to a breathable sheet material, the release sheet material is peeled off, and another breathable sheet material is attached. A method for laminating a breathable laminated material, wherein a continuous breathable portion is provided in an adhesive layer by bonding.