JPH05178529A - Method and device for processing unnecessary margin of pressure sensitive adhesive sheet - Google Patents

Abstract

PURPOSE:To provide a means having the capability of offering an aid to the production of regenerated pulp, regarding both side margins of a pressure sensitive adhesive sheet scrapped at the time of finishing to a product having the prescribed breadth. CONSTITUTION:Both side margins of a pressure sensitive adhesive sheet web 1 delivered from wound state and continuously traveling are slit. Then, strips of unnecessary pressure sensitive adhesive sheets 1b and 1b at both sides cut off from a web body 1a are continuously separated into an adhesive sheet 5 and released paper 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for treating unnecessary side edges when finishing pressure-sensitive adhesive paper into a product having a predetermined width dimension. It is preferably used when the paper material of a part is recycled pulp and reused.

[0002]

2. Description of the Related Art When finishing a product of specified dimensions from a roll of pressure-sensitive adhesive paper that has been rolled up after manufacturing, the dimensions are set using a cutter, winder, slitter, etc. Then, since the surplus exceeding the specified width dimension is cut off and removed by the slits on both side edges of the web, unnecessary strip-shaped pressure-sensitive adhesive paper is generated as spoiled paper. At present, this broke is generally incinerated, but since it occurs at a fixed rate for each product and reaches a huge amount when accumulated, from the viewpoint of effective utilization of resources, the paper material is recycled pulp. It is desirable to reuse.

However, the pressure-sensitive adhesive paper has a structure in which a release paper for preventing adhesion is adhered on an adhesive paper, and since the adhesive layer and the release agent layer exist between the front and back paper materials, the above-mentioned spoiled paper is used. In the case of recycled pulp, if a pressure-sensitive adhesive component or a release agent component is mixed in the recycled pulp, the quality is remarkably deteriorated and it cannot be put to practical use. Therefore, it is necessary to remove these components during the re-pulping, but it is technically very difficult to perform the above removal in the presence of these components. Particularly, the adhesive component is pulp fiber because of its adhesiveness and flexibility. There was a problem that it was difficult to separate from. Of course, it is not impossible to remove it by performing various treatments for a long time, but it is not realistic because it requires a great treatment cost.

In view of the above situation, the present invention provides a processing method and a processing apparatus for facilitating the regeneration of the pressure-sensitive adhesive paper to the side edges which are unnecessary when the pressure-sensitive adhesive paper is finished into a product having a predetermined width. The purpose is to contribute to the effective use of resources.

[0005]

In order to achieve the above object, the processing method according to claim 1 of the present invention slits both side edges of a pressure-sensitive adhesive paper web which is continuously fed out from a wound state. However, the strip-shaped unnecessary pressure-sensitive adhesive paper on both sides separated from the web body is continuously separated into adhesive paper and release paper.

For the same purpose, the second aspect of the present invention is characterized in that, in the processing method of the first aspect, the pressure-sensitive adhesive papers on both sides separated from the release paper are continuously adhered to each other with the pressure-sensitive adhesive surfaces transferred. It is a thing.

On the other hand, in the processing apparatus according to the third aspect of the present invention, the web feed means for feeding out the pressure-sensitive adhesive paper from the winding state and continuously running it, and the cutting for slitting both side edges of the running pressure-sensitive adhesive paper. Means and separating means for separating the strip-shaped unnecessary pressure-sensitive adhesive paper on both sides separated from the main body of the slit by a separation guide into continuous adhesive paper and release paper, and the separated adhesive paper and release paper. And a transfer means for separately transferring to a predetermined portion.

According to a fourth aspect of the present invention, in the processing apparatus according to the third aspect, a constitution is provided in which a sticking guide for continuously sticking the adhesive papers on both sides separated from the release paper to each other with their adhesive surfaces adhered to each other is adopted. It was done.

[0009]

The strip-shaped unnecessary pressure-sensitive adhesive paper on both sides separated from the web body by the slits is subsequently separated into adhesive paper and release paper, so the adhesive paper and release paper are handled separately when recycled pulp is formed. be able to. Then, one of them has a composition of only pulp fibers and an adhesive, the other has a composition of only pulp fibers and a release agent, and each component can be removed in a state where the adhesive component and the release agent component do not coexist. A suitable removing means can be adopted. In addition, even if it is difficult to make recycled pulp on the adhesive paper side from the technical aspect and the processing cost aspect,
Since the release agent made of silicone or polyethylene laminate film on the release paper side can be easily separated from the pulp fiber, if at least the release paper is made into recycled pulp, half of the broke will be reused, and resource efficiency will be improved. It can greatly contribute to the use.

Further, since the above-mentioned separation into the adhesive paper and the release paper is continuously performed after the slit while the web is running,
A special step for the separation is unnecessary, time loss due to the separation can be avoided, and the separated strip paper can be continuously sent as it is to the regenerated pulp step or the like.
By interposing a separation guide at this separation position, the separation can be facilitated, and even when slitting both side edges of the pressure-sensitive adhesive paper with a winder, the separation can be performed without any problem by keeping the normal high-speed feed.

If the pressure-sensitive adhesive paper on both sides separated from the release paper is continuously adhered to each other with the pressure-sensitive adhesive surfaces transferred, the pressure-sensitive adhesive paper can be easily transferred and handled, for example, by using a blower duct. It can be easily transferred.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a slitter part of a winder provided with a processing apparatus according to a first embodiment of the present invention. In the figure, 1 is a web of pressure-sensitive adhesive paper unwound from the winding state,
In the process of sequentially contacting the three winder rolls 2a to 2c from the lower surface to the upper surface to the lower surface in the direction of the arrow in the drawing,
The left and right strips 1b and 1b separated from the web body 1a are slit by the rotary cutting blades 3 and 3 installed on the left and right sides when passing through the winder roll 2a, and the left and right strips 1b and 1b are the third winder rolls. It is guided downward without going through 2c.

Here, the web 1 is, as shown in FIG.
Release paper 4 including lower paper 4a and release agent layer 4b, and upper paper 5
The pressure sensitive adhesive paper has a structure in which the pressure sensitive adhesive paper 5 and a pressure sensitive adhesive layer 5b are combined, and the release paper 4 is peeled and removed when the pressure sensitive adhesive paper is used, and the pressure sensitive adhesive paper 5 is adhered to a necessary place.

Therefore, the left and right strip-shaped papers 1b and 1b separated from the web body 1a in the slitter section.
Is continuously separated into the release paper 4 and the adhesive paper 5 below the first winder roll 2a through the rotating cylindrical separation guides 6, respectively. Then, the left and right release papers 4, which are separated
4 is sent downward as it is, enters the blower duct 7a, and is continuously transferred to a predetermined portion by an air flow. On the other hand, the adhesive papers 5 and 5 are guided obliquely downward toward the center so as to approach each other, and come in contact with the pair of guide rollers 8 and 8 on the paper surface side so that the adhesive layers 5b and 5b face each other downward. Then, the adhesive layers 5b and 5b are bonded to each other via the bonding rollers 9 and 9 and are then bonded to each other in a unified manner into the blower duct 7b to be continuously transferred to a predetermined portion by an air flow. ..

The separation guide for separating the strip-shaped paper 1b into the release paper 4 and the adhesive paper 5 is not limited to the rotating cylindrical shape as illustrated, but may be one having various forms and separation mechanisms. It is possible. As an example thereof, a fixed separation guide 10 for guiding the adhesive paper 5 along the arcuate surface 10a to separate it from the release paper 4 as shown in FIG. 3, and as a yarn winding shape having a smaller diameter toward the center as shown in FIG. A rotation type separation guide 11 for facilitating the start, an endless belt 12c made of rubber or the like having a large contact resistance wound between a driving wheel 12a and a driven wheel 12b as shown in FIG. Driving wheel 12b
Separation guide 12 for guiding the adhesive paper 5 along with the separation paper 4 and a rotary drum type having a large number of small holes 13a ... As shown in FIG. A separation guide 13 that guides and separates from the release paper 4 while it is included.

For the purpose of promoting the separation, for example, a wedge-shaped peeling member 14 is projected into the interface between the peeling paper 4 and the adhesive paper 5 as shown in FIG. 7, or slit-shaped air is blown as shown in FIG. A wedge-shaped member 15 having an injection nozzle 15a may be provided at the separation start position of the release paper 4 and the adhesive paper 5, and a means for promoting air separation by blowing air from the nozzle 15a to the separation interface may be added. Reference numeral 16 is a plate that prevents the bending of the band-shaped paper due to air blowing. In order to reduce the adhesion of the adhesive on the surface of the peeling members 14 and 15, it is desirable to adopt, for example, a Teflon-processed one.

FIG. 9 shows a second embodiment in which a box-shaped sticking guide 17 is provided instead of the sticking rollers 9, 9 in the first embodiment. This sticking guide 17 is shown in FIGS.
As shown in FIG. 2, the left and right adhesive papers 5 and 5 that are in the shape of a box having a rectangular opening 17a on the upper surface side and a slit-shaped opening 17b on the lower surface side and that have descended via the guide rollers 8 are formed in the rectangular opening. The adhesive papers 5 and 5 are introduced into the adhesive layer 5a by being introduced into the slit 17a and led out from the slit-shaped opening 17b.
The surfaces of a and 5a are attached to each other to be integrated. Then, the width d (see FIG. 11) in the direction along the slit-shaped opening 17b is usually set to be substantially equal to the width of the adhesive paper 5, whereby both adhesive papers 5, 5 are formed.
Of the adhesive layer 5a, 5a
Stick with the entire surface of. Therefore, since the front and back surfaces of the above-mentioned integrated-type pasted paper are only the paper surface, there is no possibility that they will adhere to the inner wall of the pipe and cause troubles while being transferred in the air duct 7b. It is desirable that the sticking guide 17 also has a Teflon processed inner surface.

[0018]

According to the processing method of the first aspect and the processing apparatus of the third aspect, when finishing the pressure-sensitive adhesive paper into a product having a predetermined width dimension, the left and right side edge portions separated from the web body by the slits are formed. Since the strip-shaped unnecessary pressure-sensitive adhesive paper is continuously separated into the adhesive paper and the release paper, the adhesive paper and the release paper can be separately handled when the unnecessary pressure-sensitive adhesive paper is recycled pulp. Recycling pulp becomes very easy, the processing cost and time required for recycling pulp are significantly reduced, and it can contribute greatly to effective use of resources.

According to the processing method of claim 2 and the processing device of claim 4, the pressure-sensitive adhesive papers on both sides separated from the release paper are continuously adhered to each other by their pressure-sensitive adhesive surfaces to be integrated, and the pressure-sensitive adhesive paper is transferred and It is easy to handle and can be easily transferred using a ventilation duct or the like.

[Brief description of drawings]

FIG. 1 is a perspective view showing a processing device for an unnecessary side edge portion of a pressure-sensitive adhesive paper according to a first embodiment of the present invention.

FIG. 2 is a sectional view of pressure-sensitive adhesive paper.

FIG. 3 is a side view showing a configuration example of a separation guide used in the processing apparatus.

FIG. 4 is a front view showing an example of a separation guide used in the processing apparatus.

FIG. 5 is a side view showing a configuration example of a separation guide used in the processing apparatus.

FIG. 6 is a cross-sectional side view showing a configuration example of a separation guide used in the processing apparatus.

FIG. 7 is a sectional view showing an example of separation promoting means used in the processing apparatus.

FIG. 8 is a cross-sectional view showing an example of separation promoting means used in the processing apparatus.

FIG. 9 is a perspective view showing a processing device for an unnecessary side edge portion of a pressure-sensitive adhesive paper according to a second embodiment of the present invention.

FIG. 10 is a vertical cross-sectional side view of a sticking guide used in the processing apparatus of the second embodiment.

FIG. 11 is a vertical sectional front view of the sticking guide.

[Explanation of symbols]

 1 Web of pressure-sensitive adhesive paper 1a Web body 1b Strip-shaped paper (unnecessary side edge) 3 Rotary blade (cutting means) 4 Release paper 5 Adhesive paper 5a Adhesive layer (adhesive surface) 6 Separation guide 9 Adhesion roller (adhesion) Guide) 10 Separation Guide 11 Separation Guide 12 Separation Guide 13 Separation Guide 17 Adhesion Guide

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takio Kuroda 4-3-1, Jokoji, Amakosaki City, Hyogo Prefecture Kanzaki Paper Co., Ltd. Kanzaki Mill

Claims (4)

[Claims] 1. A pressure-sensitive adhesive paper web, which is unrolled from a winding state and continuously runs, is slit at both edges of the web, and strip-shaped unnecessary pressure-sensitive adhesive paper on both sides separated from the main body of the web is continuously peeled from the adhesive paper. A method for treating unnecessary side edges of pressure-sensitive adhesive paper, characterized by separating the paper and paper. 2. The method for treating an unnecessary side edge portion of a pressure-sensitive adhesive paper according to claim 1, wherein the adhesive paper on both sides separated from the release paper is continuously adhered to each other with their adhesive surfaces being transferred. 3. A pressure-sensitive adhesive paper web is unwound from a wound state and continuously travels, a cutting means for slitting both side edges of the pressure-sensitive adhesive paper running, and a slit for separating from the web body. Separation means for continuously separating the band-shaped unnecessary pressure-sensitive adhesive paper on both sides into a pressure-sensitive adhesive paper and a release paper via a separation guide, and a transfer means for separately transferring the separated pressure-sensitive adhesive paper and release paper to a predetermined part. An apparatus for processing unnecessary side edges of pressure-sensitive adhesive paper, comprising: 4. The treatment device for the unnecessary side edge portion of the pressure-sensitive adhesive paper according to claim 3, further comprising a sticking guide for continuously sticking the sticky papers on both sides separated from the release paper with the sticky surfaces.