JPH0778203B2 - Adhesive tape roll manufacturing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing an adhesive tape roll having a roll paper that allows easy work of taking out an end portion of an adhesive tape.

(Prior Art) An adhesive tape roll obtained by winding an adhesive tape coated with an adhesive around a core is widely used in various fields. In such a pressure-sensitive adhesive tape roll, it is usual to attach a roll paper to the end of the pressure-sensitive adhesive tape for the purpose of facilitating removal work.

However, in the conventional adhesive tape roll, as shown in the side views and partially enlarged views of FIGS. 6 to 7, since the edge paper 4 is covered with the adhesive tape end portion, the adhesive strength of the adhesive tape is strong. With things, it was difficult to take out the tape terminal.

(Object of the Invention) The present invention provides a production method capable of efficiently forming a pressure-sensitive adhesive tape roll to which a roll paper, which is easy to take out the end portion of the pressure-sensitive adhesive tape, is attached.

(Structure of the Invention) The present invention has found a method for producing a pressure-sensitive adhesive tape roll in which the edge paper is slightly protruding from the pressure-sensitive adhesive tape terminal capable of eliminating the above-mentioned drawbacks of the conventional product, and the gist thereof is as follows. In a method for producing an adhesive tape roll in which an adhesive tape coated with an adhesive on a tape base material is continuously run and wound around a winding core, when the roll is nearly full, it is held by a roll paper sticking bar 10. In order to prevent the rear folding part A in the tape running direction from coming into contact with the pressure-sensitive adhesive coated surface, the front folding part B is used to move the folding paper folded from the folding line C by moving the above-mentioned prescription paper sticking bar 10. After sticking on the pressure-sensitive adhesive coated surface along the tape width direction, cut the pressure-sensitive adhesive tape from the tape base material side at a position a few millimeters shorter than the bending length l in A from the bending line C. And take up In the production method of the adhesive tape roll according to symptoms.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a pressure-sensitive adhesive tape roll obtained by the present invention, FIG. 2 is a partially enlarged view of II thereof, and FIG.
FIG. 4 is a schematic sectional view showing an example of an apparatus used in the method of the present invention, and FIG. 5 is a partial sectional enlarged view at V in FIG.

As can be seen from FIG. 2, the adhesive tape roll obtained according to the present invention has the edge portion t protruding from the adhesive tape end 3 by t. Although t can have an arbitrary length, it is usually sufficient to have a length of about 1 to 5 mm on which the nail portion of the fingertip is caught. The protruding portion of the edge paper facilitates removal of the tape end portion.

Next, an example of the manufacturing method and apparatus of the present invention for obtaining the above adhesive tape roll will be described.

3 and 4, the adhesive tape 2 is composed of a tape base material 6 and an adhesive application surface 5 obtained by applying an adhesive to the base material, and continuously runs in the direction of arrow S. As the adhesive tape 2 here, it is efficient to use a wide tape before it is cut into a narrow width. The adhesive tape 2 is wound around a winding core, but when it is near full winding (not shown), the lipstick paper sticking bar 10 shown in FIG. The tipping paper having a specific length and shape, which is held by the dressing bar 10, is attached to the adhesive-coated surface 5 of the adhesive tape 2.

The details of the above-mentioned lipstick sticking bar 10 are shown in the partially enlarged cross-sectional view of FIG. In FIG. 5, the paper 4 having the same width as the adhesive tape is supplied along the guide plate 14 and fixed by the vacuum suction force from the vacuum hole 13 provided in the sticking bar 10 and the pressing piece 12. The fixed edged paper is cut by the cutter 8 by a predetermined length, and then the pushing plate 11 is moved in the direction of the arrow to be bent at the bending corner portion 15 at a predetermined angle about the bending line C.

The folded folding paper, after detaching the pressing piece 12, is rotated and moved downward together with the sticking bar 10 while being attached to the suction paper sticking bar 10 only by vacuum suction, and at a predetermined position, the adhesive tape 2 It is attached to the pressure-sensitive adhesive coated surface 5 of.

In the present invention, a sticking device other than the above-mentioned device may be adopted.

As shown in the perspective view of FIG. 3, it is necessary to stick only the bent portion B on the front side in the traveling direction S to the pressure-sensitive adhesive coated surface 5 and the bent portion A on the rear side. Does not come into contact with the adhesive coated surface. After sticking the edge paper, the tape cutter 9 is operated, but the cutting position of the adhesive tape is cut from the bending line C at a position m which is a few millimeters shorter than the bending length l in the above A, at a position m behind. It The tape cutter 9 is operated from the tape base material 6 side. By cutting from the tape base material side in this way, it is possible to cut only the tape base material at a predetermined position without cutting the folding paper that is bent and attached so that the rear side does not contact the base material.

After cutting, the adhesive tape is wound up and cut as a roll as it is or into a roll of fine wires. As a result, the rear bent portion A is also attached to the adhesive coated surface of the tape.

(Effects of the Invention) The method of the present invention has an advantage that a roll of adhesive tape from which the end portion of the adhesive tape can be easily taken out can be efficiently obtained in the process of producing the adhesive tape.

[Brief description of drawings]

FIG. 1 is a side view of a pressure-sensitive adhesive tape roll obtained by the present invention, FIG. 2 is a partially enlarged view of II thereof, and FIG.
FIG. 4 is a schematic sectional view showing an example of an apparatus used in the manufacturing method of the present invention, FIG. 5 is an enlarged partial sectional view taken along line V in FIG. 4, FIG. 6 is a side view of a conventional adhesive tape roll, and FIG. The figure is a partially enlarged view of VII. A: rear fold B: front fold C: fold line l: fold length at A 10: wrapping paper sticking bar

Claims (1)

[Claims] 1. A method for producing a pressure-sensitive adhesive tape roll in which a pressure-sensitive adhesive tape having a tape base material coated with a pressure-sensitive adhesive is continuously run and wound around a core, at the time when the roll is nearly full, a stripper sticking bar. With respect to the edge paper held by (10) and bent from the folding line C, the edge paper sticking bar (10) is moved so that the rear bent portion A in the tape running direction does not come into contact with the adhesive coated surface. Then, after sticking along the tape width direction on the pressure-sensitive adhesive coated surface only at the front bent portion B, at a position behind the bending line C by a distance shorter than the bending length 1 at A by about several millimeters. A method for producing a pressure-sensitive adhesive tape roll, comprising cutting the pressure-sensitive adhesive tape from the tape substrate side and winding it.