JPH0551562A - Method for producing double-sided pressure-sensitive adhesive tape and double-sided pressure-sensitive adhesive tape obtained thereby - Google Patents

Abstract

(57) [Summary] [Purpose] When rewinding, the release paper inside or the double-sided adhesive layer does not grow while sticking to the double-sided pressure-sensitive adhesive tape. Provided is an unnecessary double-sided pressure-sensitive adhesive tape manufacturing method and a double-sided pressure-sensitive adhesive tape obtained thereby. [Structure] Double-sided pressure-sensitive adhesive layer (1) and process release paper with the double-sided pressure-sensitive adhesive layer (1) having the pressure-sensitive adhesive layers on both sides of the tape-shaped support on the inside and the process release paper (3) on the outside While rewinding the roll (6) with (3) and (3), attach the release paper (2) to the double-sided pressure-sensitive adhesive layer (1) and process release paper (3) from the double-sided pressure-sensitive adhesive layer (1). Of the double-sided pressure-sensitive adhesive layer (1) so that the double-sided pressure-sensitive adhesive layer (1) is on the outside and the release paper (2) is on the inner side.
And release paper (2).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a double-sided pressure-sensitive adhesive tape suitable for fixing an automobile emblem, a side molding, etc., and a double-sided pressure-sensitive adhesive tape obtained thereby.

[0002]

2. Description of the Related Art Conventionally, for fixing an emblem or a side molding for automobiles, a double-sided pressure-sensitive adhesive layer is placed on the inner side and a release paper having a release layer on the pressure-sensitive adhesive layer side is on the outer side. A double-sided pressure-sensitive adhesive tape wound with a release paper has been used, but this double-sided pressure-sensitive adhesive tape has a problem that the release paper inside the double-sided pressure-sensitive adhesive tape is stretched while being in close contact with the double-sided pressure-sensitive adhesive tape.

Therefore, in order to solve this problem, as shown in Japanese Patent Publication No. 1-44225, the double-sided adhesive layer should be on the inside and the release paper having the release layer on the adhesive layer side should be on the outside. After wrapping the double-sided adhesive layer and release paper, remove the outermost release paper before using the product, rewind the double-sided adhesive tape after making the double-sided adhesive layer outside and the release paper inside A method of rewinding an adhesive tape is used.

[0004]

According to the above-mentioned method for rewinding the double-sided pressure-sensitive adhesive tape, the release paper is inside the double-sided pressure-sensitive adhesive layer, so that the length is shorter than the double-sided pressure-sensitive adhesive layer and the double-sided pressure-sensitive adhesive material is used. Since it is less stretchable than the layer, when the both are rewound in the same manner, the release paper receives a larger tension than the double-sided pressure-sensitive adhesive layer, and the release paper and the double-sided pressure-sensitive adhesive layer inside thereof can be easily peeled off. Therefore, the problem that the release paper or the double-sided pressure-sensitive adhesive layer inside the double-sided pressure-sensitive adhesive tape is stretched while being in close contact with the double-sided pressure-sensitive adhesive tape is solved. However, there is a problem that a step of removing the outermost release paper of the double-sided pressure-sensitive adhesive tape is necessary to carry out the rewinding method of the double-sided pressure-sensitive adhesive tape.

An object of the present invention is to remove the outermost release paper of the double-sided pressure-sensitive adhesive tape from the inner side of the double-sided pressure-sensitive adhesive tape or the double-sided pressure-sensitive adhesive layer while the double-sided pressure-sensitive adhesive tape or the double-sided pressure-sensitive adhesive layer does not grow while being rewound. It is an object of the present invention to provide an unnecessary double-sided pressure-sensitive adhesive tape manufacturing method and a double-sided pressure-sensitive adhesive tape obtained thereby.

[0006]

According to the method for producing a double-sided pressure-sensitive adhesive tape according to the present invention, a double-sided pressure-sensitive adhesive layer having a pressure-sensitive adhesive layer provided on both sides of a tape-shaped support is on the inside and the release paper is on the outer side. While unwinding the roll body in which the double-sided pressure-sensitive adhesive layer and the process release paper are rolled up, the double-sided pressure-sensitive adhesive layer is pasted with a release paper having a release layer on the double-sided pressure-sensitive adhesive layer side and a step from the double-sided pressure-sensitive adhesive layer. The release paper is peeled off, and the double-sided pressure-sensitive adhesive layer and the release paper are rolled up so that the double-sided pressure-sensitive adhesive layer is on the outside and the release paper is on the inside.

[0007]

In the double-sided pressure-sensitive adhesive tape manufactured by the method for manufacturing a double-sided pressure-sensitive adhesive tape according to the present invention, the double-sided pressure-sensitive adhesive layer and the release paper are wound so that the double-sided pressure-sensitive adhesive layer is on the outer side and the release paper is on the inner side. Therefore, the release paper or the double-sided adhesive layer inside the double-sided adhesive tape does not extend while being closely adhered to the double-sided adhesive tape at the time of rewinding, and the step of removing the outermost release paper of the double-sided adhesive tape before use is unnecessary.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a method for producing a double-sided adhesive tape according to the present invention.

In FIG. 1, two upper and lower rewinding reels (4) and (5) each equipped with a paper tube are provided on the left side entrance side, and the upper rewinding reel (4) is provided with a peeling unit. The release paper (2) wound in a roll is wound so that the layer (2a) is on the outside, and the lower rewind reel (5) has the double-sided adhesive layer (1) on the inside, A roll (6), which is obtained by winding the double-sided pressure-sensitive adhesive layer (1) and the process release paper (3) in a roll shape, is wound so that the process release paper (3) is on the outside. Process Release Paper (3)
Is used when applying a pressure-sensitive adhesive to the support.Since the release layer of the silicone resin is provided on both sides of the polyethylene film, the adhesive force between the process release paper (3) and the pressure-sensitive adhesive layer is It is 10 to 20 g / 10 mm.

The winding body (6) of the double-sided pressure-sensitive adhesive layer (1) and the process release paper (3) is rewound to release the release layer (2a) and the double-sided pressure-sensitive adhesive layer (1).
After the release paper (2) is attached so as to contact with, it is passed between the two pairs of pressing rollers (7) and (7) and sent to the right outlet side.

The upper and lower take-up reels are provided on the right outlet side.
(8) and (9) are provided, and the lower take-up reel
(9) is rotated counterclockwise and double-sided adhesive layer (1)
While peeling the process release paper (3) from the process release paper (3)
Take up. The upper take-up reel (8) is also rotated counterclockwise so that the release paper (2) is on the inside, double-sided adhesive layer
Double-sided adhesive layer (1) and release paper (2) so that (1) is on the outside
And are wound into a roll to manufacture a double-sided pressure-sensitive adhesive tape roll product (10). In this rolled product (10), the adhesive layer (1) is exposed, so in order to protect it, the product (10) surface should be covered with another release paper or a wrapping film. May be done. The product (10) manufactured in this way is cut into a desired width and finished in the same shape.

FIG. 2 shows a product shape of a double-sided pressure-sensitive adhesive tape wound in a roll shape. The double-sided pressure-sensitive adhesive layer (1) has a tape-shaped polyethylene foam as a support and an acrylic ester on both sides thereof. An acrylic pressure-sensitive adhesive layer containing a copolymer as a main component is provided, and the release paper (2) is a release layer of a silicone resin on a sheet substrate made of a mixture of polyethylene and an ethylene-α-olefin copolymer. (2a) is provided. Release paper for double-sided adhesive layer (1)
The adhesive strength of (2) (measured based on the method according to JIS Z0237-8) is 11 g / 10 mm on the release layer (2a) side,
It is 64 g / 10 mm on the side not subjected to the peeling treatment.

The release layer (2a) facilitates the work of attaching the double-sided tape to the adherend after rewinding and peeling the release paper (2), and may be omitted in some cases. .. Further, in order to form the release layer (2a), instead of providing the silicone resin layer, a treatment for increasing the affinity for the adhesive on the other surface of the release paper (2) may be performed.

In the double-sided pressure-sensitive adhesive tape manufactured by the method for manufacturing a double-sided pressure-sensitive adhesive tape according to the present invention, the releasable paper or the double-sided pressure-sensitive adhesive layer inside the double-sided pressure-sensitive adhesive tape does not stretch while being rewound and before use. Since the step of removing the outermost release paper of the double-sided adhesive tape is unnecessary, the efficiency of fixing work such as an automobile emblem or a side molding can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of an apparatus for carrying out a manufacturing method according to the present invention.

FIG. 2 is a front view showing a product shape of a double-sided pressure-sensitive adhesive tape manufactured by the manufacturing method according to the present invention.

[Explanation of symbols]

 (1) Double-sided adhesive layer (2) Release paper (3) Process release paper (6) Rolled body

Claims (2)

[Claims] 1. A double-sided pressure-sensitive adhesive layer (1) inside, process release paper
Double-sided adhesive layer (1) and process release paper so that (3) is on the outside
While rewinding the roll (6) with (3) and (3), attach the release paper (2) to the double-sided pressure-sensitive adhesive layer (1) and process release paper (3) from the double-sided pressure-sensitive adhesive layer (1). And then the double-sided pressure-sensitive adhesive layer (1) and the release paper (2) are rolled up so that the double-sided pressure-sensitive adhesive layer (1) is on the outside and the release paper (2) is on the inside. Double-sided adhesive tape manufacturing method. 2. A double-sided pressure-sensitive adhesive tape obtained by the method for producing a double-sided pressure-sensitive adhesive tape according to claim 1.