JPH0629384B2 - Adhesion method for sealing tape of silicone sheet material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention attaches a sealing tape to a joint portion of a sewn material such as a wetsuit used for diving or a joint portion of a sewn material such as a gas filling bag. The present invention relates to an adhesive method for ensuring high liquid-tightness and air-tightness, and particularly to a method for adhering a seal tape to a joint portion of a silicon-based sheet material that cannot be adhered by a hot-melt adhesive material called hot melt.

[Prior Art] Generally, when a synthetic fiber sheet or a synthetic resin sheet or the like is used as a material, for example, when a wet suit is sewn, after the sewing work by a sewing machine, the purpose is to secure the sealability and reinforcement of the seam (sewn portion). A method is known in which a sealing tape is attached along a seam.

In this sealing tape bonding work, hot air is jetted to the heat-melting adhesive material applied to the back surface of the seal tape to preheat and melt the adhesive material while attaching the seal tape to the joint portion of the material, For example, the seal tape is fed between a rubber roller and a metal roller so that the seal tape is continuously attached along the seam.

[Problems to be Solved by the Invention] However, the silicon-based sheet material has a drawback that the release tape of silicon is damaged and the seal tape cannot be attached by the conventional method.

The present invention has been made in view of such circumstances, it is possible to reliably stick the seal tape to the silicon-based sheet material, performs the sealing and reinforcement of the seam after sewing work by the sewing machine, An object of the present invention is to provide a method for adhering a seal tape of a silicon-based sheet material, which is excellent in aging resistance, while ensuring high liquid-tightness such as a wetsuit and high airtightness such as a gas filling bag.

[Means for Solving the Problems] In order to achieve the above object, the present invention superimposes a silicone resin tape on the surface of a carrier tape and feeds the silicone resin tape from a first feeding position to an adhesive applying position, and applies the adhesive at this position. Means for applying the silicone resin adhesive to the silicone resin tape and then sending it to the branching position, where the carrying tape and the silicone resin tape are separated from each other and sent for branching, and the branched carrying tape is taken by the first winding means. At the same time as being wound up, the anti-adhesive tape is repeated from the second unwinding position, and this tape is wound up around a pressure-bonding roller arranged so that it can be brought into contact with and separated from the surface of the silicon-based sheet material, and then taken up by the second winding means. , The adhesive applied to the silicone resin tape separated from the transport tape and delivered at the branch position is directed toward the sheet-shaped material and the sheet-shaped material and the adhesive. The adhesive material is fed between the adhesion preventing tapes, and the sheet material, the adhesive material, the silicon resin tape, and the adhesion preventing tape are pressed by the pressure roller and the pressure member arranged to face the pressure roller. A silicone resin tape is pressure-bonded onto the sheet-shaped material to form a seal line, and the pressure-bonding roller is retracted to the standby position at the end position of this seal line, and then the non-pressure-bonded starting end portion of the silicon tape is held by the holding and cutting means, And the tip is cut off.

[Operation] According to the present invention, a silicone resin tape can be adhered to the surface of the seam portion of a silicon-based sheet material via a silicone-based adhesive material to ensure high liquid-tightness or air-tightness. The silicon adhesive is positively permeated into the joint portion, that is, the sewing machine hole by the pressing force of the pressure roller and the pressing member, so that the sealing property of this portion can be significantly improved.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing the overall configuration of a seal tape bonding apparatus applied to the practice of the present invention, in which FIG. 1 is a box-shaped main body containing various drive sources and a power transmission mechanism,
It is provided with a vertical panel portion 1A and a base portion 1B extending horizontally from the lower end of the front surface of the panel portion 1A toward the front.

At a first feeding position 2 of the vertical panel portion 1A, a raw polymer tape 5 obtained by polymerizing a silicon resin tape (hereinafter, simply referred to as a silicon tape) 4 on a surface of a carrier tape 3 is rotatably attached in a wound state. . The polymerized raw tape 5 fed from the first feeding position 2 has guide rollers R1 to R3.
Along the path to the adhesive application position 6, the adhesive is applied to the first tension adjusting means 8 by being guided by the roller 7 rotatably mounted at this position.

Adhesive applying means 9 is applied to the surface of the polymerized raw tape guided by the roller 7 at the adhesive applying position 6, that is, to the silicon tape 4.
Thus, the paste-like silicon resin adhesive 10 is applied. That is, the adhesive material applying means 9 is detachably attached to the adhesive material injection machine 9B having a downward nozzle 9A for ejecting the adhesive material 10 attached to the tip and an injection passage 9C of the injection machine 9B. It is composed of a filling tank portion 9D for supplying the adhesive material 10 to the passage 9C, and the silicone resin adhesive material 10 (for example, manufactured by Shin-Etsu Chemical Co., Ltd.) is provided in the filling tank portion 9D.
TKAB-002) is filled. Then, the injection machine 9 is rotated about a support pin 9E attached to the panel portion 1A as a rotation center to an adhesive application position shown by a solid line and a standby position shown by a virtual line by a drive source such as a cylinder device (not shown). It is supposed to be retained.

The first tension adjusting means 8 has a pair of left and right adjusting arms 8A and 8B having tension adjusting rollers TR1 and TR2 rotatably attached to their lower ends, a connecting member 8D and a cylinder device that are stretched between these adjusting arms 8A and 8B. 8E, the upper end portion of the adjusting arm 8A is pin-pivotally attached 8a to the panel portion 1A, the substantially central portion of the adjusting arm 8B is pin-pivotally attached 8b to the panel portion 1A, and the cylinder device is attached to the panel portion 1A. The tip of the rod 8e of 8E is connected to the adjusting arm 8A. Therefore, the operation of the cylinder device 8E causes the adjustment arms 8A and 8B to rotate and be held at the first adjustment position shown by the solid line and the second adjustment position shown by the phantom line.

The polymerization source tape 5 sent from the roller 7 at the adhesive application position 6 to the first tension adjusting means 8 is branched at the branch position 1 along the tension adjusting roller TR1 of the adjusting arm 8A.
To 1. A branching roller 11A is rotatably attached to the branching position 11, and the carrier tape 3 for the polymerization raw tape 5 is attached.
Is separated from the branch roller 11A by being fed upward toward the tension adjusting roller TR2 of the adjusting arm 8B, and by feeding the silicone tape 4 coated with the adhesive 10 downward toward the base portion 1B. The initial work of this separation is done manually by the operator. Then, the transport tape 3 delivered from the tension adjusting roller TR2 is guided by the guide rollers R4 to R8 and wound by the first winding means 12 which is a winding reel.

On the other hand, the anti-adhesive tape 14 is rotatably attached to the second feeding position 13 of the vertical panel 1A in a wound state. The anti-adhesive tape 14 fed from the second feeding position 13 is fed to the second tension adjusting means 15 along the guide roller R9, and from there, the guide rollers R10 to R10.
The pressure roller 16 is reached along R13, and the pressure roller 1
After winding 6 up, it is guided by the guide rollers R15 to R17 and wound up by the second winding means 17 which is a winding reel.

The pressure roller 16 is rotatably attached to the tip of an arm 18, and the base end of the arm 18 is centered around a support pin 19 attached to the panel 1A as a rotation center and is shown by a solid line by a drive source such as a cylinder device (not shown). It is designed to be rotated and held at the crimping position shown by and the standby position shown by the virtual line.
The second tension adjusting means 15 is attached to the arm 18. That is, the second tension adjusting means 15 is the arm 1
8, an L-shaped adjustment arm 15A having a tip end attached to it and extending rearward, and an elongated hole 15 formed in the adjustment arm 15A.
The tension adjusting roller TR3 is movably held along a.

A holding and cutting means 19 is arranged near the pressure roller 16 and the arm 18. The holding and cutting means 19 connects the silicon tape 4 and the silicone resin adhesive 10 to the sheet material 2
After crimping to the upper surface of the seam portion of 0 to form a crimping seal line of a predetermined length, hold the unbonded starting end of the silicon tape 4 and make sure that its tip, that is, the boundary between the crimped part and the unbonded part is not formed. This is for cutting the vicinity of the boundary and waiting for the next crimping work, and is indicated by a solid line by a drive source such as a cylinder device (not shown) around a support pin 19A attached to the panel portion 1A as a rotation center. A support plate 19B that is rotatable between the retracted position shown and a holding and cutting position shown by phantom lines, and a bracket 19E that rotates in the direction of arrow A about a pin 19D as a rotation center by the operation of a cylinder 19C attached to this support plate 19B. Has a holding head 19F attached to a cutting blade 19G near the rear end of the holding head 19F.
Is equipped with. The holding head 9F is composed of a vacuum suction head, and the cutting blade 19G is composed of an electric heating plate.

The silicon-based sheet material 20 is a circular shape having a seam portion 20A sewn on the outer peripheral portion with a sewing machine, is placed on a turntable 21 that functions as a pressing member, and is turned by, for example, suction force by vacuum. It is fixed to the table 21 and is adapted to rotate together with the turntable 21. When the pressure bonding roller 16 reaches the pressure bonding position, the support roller prevents the peripheral edge portion from being locally pushed down by the pressure of the pressure bonding roller 16. Supported by 22.

Next, the procedure for adhering the seal tape will be described.

Silicon sheet material 20 on the turntable 21
Device and fix it so that it will not be displaced due to the suction force of the vacuum.

When the above-mentioned work preparation is completed, the unbonded starting end portion of the silicon tape 4 coated with the paste-like silicon resin adhesive 10 by the adhesive application means 9 provided at the adhesive application position 6 is the second A As shown in the figure, it is held by suction on the holding head 19F of the holding and cutting means 19.

By operating the cylinder 19C in the holding and cutting means 19, the holding head 19F is rotated to the position shown in FIG. 2B, and the silicon tape 4 is lightly pressed onto the seam portion 20A of the material 20 via the silicon resin adhesive 10. Make a temporary stop.

After releasing the suction of the holding head 19F, cylinder 1
9C is moved back and the support plate 19B is rotated to retract the holding and cutting means 19 to the retracted position shown by the solid line in FIG.

The arm 18 is rotated to the pressure-bonding position shown by the solid line in FIG. 1, and the silicon tape 4 is pressed against the material 20 side by the pressure-bonding roller 16 via the adhesion preventing tape 14. That is, the pressure roller 16 and the turntable 21 functioning as a pressing member, the seam portion 20A of the sheet material 20, the adhesive 1
0, the silicon tape 4 and the anti-adhesive tape 14 are pinched. Further, when the arm 18 is rotated to the crimping position, the L-shaped adjusting arm 15A forming the second tension adjusting means 15 moves upward, and the tension adjusting roller TR3 is moved closer to the guide rollers R9 and R10. By shortening the length of the adhesion preventing tape 14 from the guide roller R9 to the guide roller R10, and rotating the pressure bonding roller 16 together with the arm 18 from the standby position to the pressure bonding position to prevent adhesion from the guide roller R13 to the pressure bonding roller 16. This prevents an inconvenience that the length of the tape 14 becomes long and the tension increases, that is, the adhesive prevention tape 14 is excessively paid out from the feeding position 13 to cause unnecessary slack in the adhesive prevention tape 14.

Cylinder device 8E in the first tension adjusting means 8
The rod 8e is moved backward to hold the adjustment arms 8A and 8B in the first adjustment position shown by the solid line. As a result, the length of the polymerized raw tape 5 from the roller 7 to the branch roller 11A becomes longer, and the silicon tape 4 sent from the branch roller 11A is pulled and moved to the side of the branch roller 11A by that amount, and the silicon tape 4 is pulled between the branch roller 11A and the pressure roller 16 with a tension suitable for pressure bonding, and the length of the carrier tape 3 from the branch roller 11A to the guide roller R4 is shortened so that the carrier tape 3 together with the silicon tape 4 functions as a roller branch. The amount of movement generated by being pulled to the 11 side is absorbed, and excessive tension is prevented from being applied to the transport tape 3.

The take-up reel constituting the first take-up means 12, the take-up reel constituting the second take-up means 17, the roller and the guide roller R4 are rotated in the directions of the arrows by drive sources (not shown), respectively, and the turntable 2
1 is rotated in the direction of arrow B in FIG.

The anti-adhesion tape 14 and the silicon tape 4 to which the adhesive 10 is applied by the adhesive applying means 9 at the adhesive applying position 6 are continuously fed between the pressure roller 16 and the seam 20A of the sheet material 20 to be pressure bonded. The silicon tape 4 is adhered to the seam portion 20A by the nipping force between the roller 16 and the turntable 21 as the nipping member, and a sealing process for forming a continuous seal line SL (see FIG. 3) is performed.

The adhesive preventive tape 14 has the adhesive material 10 and the pressure roller 16
After performing the function of preventing adhesion to the surface of the
The transport tape 3 is wound by the winding means 17, and the transport tape 3 is wound by the first winding means 12.

In the above, when the seal line SL made of the silicon tape 4 is formed endlessly on the joint portion 20A of the sheet-shaped material 20, the drive source is stopped, and then the first
The arm 18 in the figure rotates to the standby position shown by the phantom line, and the pressure bonding roller 16 retracts. As a result, the L-shaped adjusting arm 15A of the second tension adjusting means 15 moves downward,
The tension adjusting roller TR3 is connected to the guide rollers R9 and R1.
0 from the guide roller R9 to the guide roller R
The length of the anti-adhesive tape 14 up to 10 is increased and the pressure-bonding roller 16 is rotated to the standby position, whereby the pressure-sensitive adhesive tape 1 reaching from the guide roller R13 to the pressure-bonding roller 16 is rotated.
The length of 4 is shortened, and during this period, it is possible to prevent the inconvenience that the anti-adhesion tape 14 sags and the tension is significantly lowered.

The support plate 19B is rotated to move the holding / cutting means 19 to the holding / cutting position shown by the phantom line in FIG.
9F is brought into contact with the silicon tape 4, and the holding head 19F is given a suction force by vacuum to suck and hold the unpressed start end of the silicon tape 4, and the cutting blade 19G is heated by energization to press the silicon tape 4 The unbonded portion at or near the boundary between the unbonded portion and the unbonded portion is melt-cut.

Cylinder device 8E in the first tension adjusting means 8
The rod 8e is moved forward to hold the adjusting arms 8A and 8B in the second adjusting position indicated by the phantom line. As a result, the length of the polymerized raw tape 5 from the roller 7 to the branch roller 11A is shortened, and the silicon tape 4 fed from the branch roller 11A has a slack by that amount, and
The length of the transport tape 3 from the branch roller 11A to the guide roller R4 is increased to absorb the slack of the transport tape 3 caused by the shortening of the distance between the roller 7 and the branch roller 11A.

The support plate 19B is rotated to move the holding means 19 to the retracted position shown by the solid line in FIG. 1 and wait.

By repeating the above-described steps (1) to (3) below, it is possible to sequentially form and seal the seal line SL on the joint portion 20A of the subsequent sheet-shaped material 20, and the silicon-based sheet-shaped material 20 is bonded via the silicon-based adhesive 10. Seam part 2
By sticking the silicon tape 4 on the 0A surface, high liquid tightness or high air tightness can be secured. Moreover, since the silicone adhesive 10 can be positively permeated into the seam portion 20A, that is, the sewing machine hole by the pressing force of the pressure roller 16 and the turntable 21 as the pressing member, the sealing property of this portion is significantly increased. Can be increased.

When the silicone resin adhesive 10 in the filling tank portion 9D of the adhesive applying means 9 is consumed, each drive system described above is temporarily stopped and the injection machine 9B is put on standby by the phantom line in FIG. The filling tank portion 9D may be replenished with the adhesive by rotating and holding it in the position. In practice, the cartridge is replenished by loading it in the filling tank section 9D.

In the above embodiment, the circular sheet material 20 is used, but according to the present invention, the polygonal sheet material can be obtained by replacing the turntable 21A and changing the rotation pattern. It is possible to adhere a seal tape to the, and by using a roller as a pressing member and corresponding to the pressure roller 16, a seal line can be applied to a long seam portion of a long sheet material. It is also possible to form and seal.

[Effects of the Invention] As described above, according to the present invention, the seal tape is reliably attached to the joint portion of the silicon-based sheet-shaped material that cannot be adhered by the hot-melt adhesive material called hot melt. Therefore, it is possible to secure high liquid-tightness or air-tightness at the joint portion, and also to reinforce the joint portion. Moreover, since the silicon-based adhesive can be positively permeated into the seam by the pressing force of the pressure roller and the pressing member, the sealing property is significantly improved. Therefore, it can be suitably used for a wetsuit used for diving, or for sealing a seam portion such as a gas filling bag, and improvement in aging resistance can be realized.

[Brief description of drawings]

FIG. 1 is a front view showing the overall structure of a seal tape bonding apparatus applied to the practice of the present invention, FIGS. 2A and 2B are explanatory front views showing the operating state of a holding head in a holding and cutting means, and FIG. FIG. 3 is a plan view showing an example of a sheet material and a turntable. 2 ... 1st delivery position 3 ... Conveying tape 4 ... Silicon resin tape 6 ... Adhesive application position 9 ... Adhesive application means 10 ... Silicon resin adhesive 11 ... Branch position 12 ... 1st Winding means 13 ...... Second feeding position 14 ...... Adhesion prevention tape 16 ...... Pressing roller 17 ...... Second winding means 19 ...... Holding and cutting means 20 ...... Sheet material 21 ...... Turntable (clamping member ) SL …… Seal line

Claims (1)

[Claims] Claim: What is claimed is: 1. A silicone resin tape is polymerized on the surface of a carrier tape and is dispensed from a first feeding position to an adhesive application position, and the silicone resin adhesive is applied to the silicone resin tape at this position by an adhesive application means. After that, it is sent to a branching position, where the carrier tape and the silicone resin tape are separated from each other and branched and sent, and the branched carrier tape is wound by the first winding means, and the anti-adhesion tape is paid out from the second feeding position, This tape is wound around a pressure roller arranged on the surface of a silicon-based sheet material so as to be able to come into contact with and separated from the surface of the silicon-based sheet material, and then is wound by a second winding means, and is separated from the carrier tape at the branching position and is delivered from the silicone resin. The adhesive material applied to the tape is directed toward the sheet-shaped material and sent out between the sheet-shaped material and the anti-adhesive tape, and the sheet-shaped material, the adhesive, A seal line is formed by pressing the adhesive material and the silicone resin tape onto the sheet material while pressing the recon resin tape and the anti-adhesion tape with the pressure roller and the pressure member arranged to face the pressure roller. The silicon is characterized in that the pressure-bonding roller is retracted to the standby position at the end position of this seal line, and then the unbonded starting end of the silicon tape is held by the holding cutting means and the tip thereof is cut. Adhesive method for sealing tape of sheet material.