JP2865430B2 - Adhesive roll cutting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of rotating a pressure-sensitive adhesive roll in which a pressure-sensitive adhesive tape is wound around a paper core and bringing a round blade for cutting closer to the axis of the pressure-sensitive adhesive roll. The present invention relates to an adhesive roll cutting method for cutting an adhesive roll with a round blade for use.

[0002]

2. Description of the Related Art Generally, a paper substrate,
Adhesive tape with adhesive processing on one side such as cloth base material, cellophane base material, plastic film base material such as OPP / PET / PVC or adhesive sheet with release paper stuck on the adhesive surface, and non-woven fabric, paper, OPP / PET / There is a wide-width type such as a double-sided adhesive tape in which both surfaces of a plastic film base material such as PVC or the like are subjected to adhesive processing and one side of the adhesive surface is bonded with release paper.

[0003] Further, in order to cut these adhesive rolls, in both the case of a razor blade and a rotating round blade, the adhesive roll is rotated, and the cutting blade is advanced toward the axis of the adhesive roll to perform cutting. I have.

Conventionally, the feed speed of the blade during this cutting has been constant.

[0005]

However, when the rotating adhesive roll is cut with a blade, the blade receives a resistance to the penetration at the moment when the blade comes into contact with the adhesive roll and starts cutting. Deform.

As a result, there has been a problem that a shift from the position where the cutting has begun occurs, resulting in double cutting.

[0007] For some products, this double cutting generates thread-like chips, deteriorating the appearance of the product, and is a serious drawback such as sticking to the adhesive surface when the tape is developed.

In order to prevent the double break, conventionally, the following has been described. That is, cutting was performed at a low speed and a constant speed in the range of 0.5 mm / sec to 3 mm / sec with the feed speed of the normal blade.

[0009] However, when cutting is performed at such a reduced feed rate of the blade, the time required for the cutting is about ten times as long as the set time, so that the productivity is reduced to one tenth or less. There was a problem of doing it.

An object of the present invention is to solve the above-mentioned conventional problems. That is, an object of the present invention is to provide a method for cutting an adhesive roll, which does not cause double breaks and can minimize an adverse effect on productivity.

[0011]

According to the present invention, in order to solve the above-mentioned problems, an adhesive roll in which an adhesive tape is thickly wound around a paper core is rotated, and the adhesive roll is turned toward a shaft core of the adhesive roll. This is a method of cutting an adhesive roll, in which a round blade for cutting is brought close to and the adhesive roll is cut by the round blade for cutting, wherein the approach speed of the round blade for cutting to the adhesive roll is 0.5 mm / sec or more.
After cutting the outer layer of the pressure-sensitive adhesive roll, which is the outer peripheral portion of the pressure-sensitive adhesive tape layer, at this speed, the inner layer portion of the pressure-sensitive adhesive roll and the paper core are 5 mm / sec to 30 mm / sec.
The cutting was performed at the feed speed of the blade c.

The outer layer of the pressure-sensitive adhesive roll refers to the outermost layer of the pressure-sensitive adhesive roll, from the outermost layer of the pressure-sensitive adhesive roll to the number of turns of the tape of about 1 to 100 turns.

[0013]

[Action] By reducing the entry speed of the round blade for cutting into the adhesive roll to 0.5 mm / sec to 3 mm / sec, the resistance to the entry of the blade becomes small.
There is little misalignment of the blade and double cutting does not occur.

Further, since the thick inner layer portion of the adhesive roll and the paper core are cut at a feed speed of the blade of 5 mm / sec to 30 mm / sec, it does not take more time than necessary to cut.

Therefore, without lowering the productivity,
It is possible to make a cut.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for cutting an adhesive roll according to the present invention will be described below with reference to the drawings showing an embodiment.

FIG. 1 is an explanatory sectional view of a main part showing an embodiment of a method for cutting an adhesive roll according to the present invention.

The method for cutting an adhesive roll according to the present invention comprises:
The adhesive roll 3 in which the adhesive tape 2 is thickly wound around the paper core 1 is rotated, and the cutting round blade 4 is moved toward the axis of the adhesive roll 3, and the adhesive is applied by the cutting round blade 4. This is for cutting the roll 3.

The penetration speed of the cutting round blade 4 with respect to the adhesive roll 3 is set to 0.5 mm / sec to 3 mm / sec, and the outer layer 3 which is the outer peripheral portion of the adhesive tape layer of the adhesive roll 3 is formed.
1 is cut at this speed, the thick inner layer 32 of the adhesive roll 3 and the paper core 1 are separated from each other by 5 mm / sec to 30 mm / s.
ec was cut at the feed speed of the blade 4.

FIG. 1 shows the initial stage of entry of the cutting blade 4 into the adhesive roll 3 by a solid line, and the outer layer 31 which is the outer peripheral portion of the adhesive tape layer of the adhesive roll 3 is cut by the cutting blade 4 by a dashed line. 2 shows a state in which the thick inner layer 32 of the adhesive roll 3 and the paper core 1 are cut off by a two-dot chain line.

As described above, the approach speed of the cutting round blade 4 with respect to the adhesive roll 3 is 0.5 mm / sec to 3 mm / sec.
Since the resistance to the penetration of the blade 4 is reduced by reducing the value of c, the displacement of the blade 4 is small and double cutting does not occur.

Further, since the thick inner layer 32 of the adhesive roll 3 and the paper core 1 are cut at a feed speed of the blade 4 of 5 mm / sec to 30 mm / sec, it takes less time than necessary.

Therefore, without lowering the productivity,
It is possible to make a cut. If the cutting blade 4 enters the adhesive roll 3 at a speed of not more than 0.5 mm / sec, the adhesive of the adhesive tape 2 is exuded by friction.

A round blade 4 for cutting the adhesive roll 3
When the entry speed is 3 mm / sec or more, double breaks occur.

Further, if the thick inner layer 32 of the adhesive roll 3 and the paper core 1 are cut at a feed speed of the blade 4 of 5 mm / sec or less, the cutting time becomes longer, and the productivity is reduced.

When the thick inner layer 32 of the adhesive roll 3 and the paper core 1 are cut at a feed speed of the blade 4 of 30 mm / sec or more, the cut surface becomes rough.

For the above reasons, the entering speed and the cutting speed of the blade 4 are set to the above values. Hereinafter, examples in which the present invention is actually implemented will be described.

Internal diameter 3 inches, width 1250 mm, thickness 3 m
On a paper core 1 having a thickness of 25 m, an adhesive roll 3 was formed by winding 50 m of an adhesive tape 2, which was obtained by drying an acrylic adhesive on a polyester substrate having a thickness of 25 μm and a width of 1200 mm and then applying the acrylic adhesive to 20 μm. The tape roll thickness of the adhesive roll 3 was about 7 mm. Then, this adhesive roll 3 is
Rotating at 0 rpm, round blade 4 for cutting 160 mm in outer diameter
Cut.

The outer circumference 3 mm of the adhesive roll 3 is 1.0 m
The adhesive roll 3 is cut at a feed speed of the blade 4 of 20 mm / sec.
It was cut to a width of mm.

As a result, it was possible to obtain a product having a good appearance without double breaks. At this time, the time required for cutting was about 3.4 sec.

For comparison, the pressure-sensitive adhesive roll 3 was 1.0 m
When cutting was performed at a constant feed speed of the blade 4 of m / sec, the time required for cutting was 10 sec.

Therefore, according to the present invention, the cutting time is not long and the productivity is not adversely affected.

[0033]

As described above, according to the present invention, an adhesive roll in which an adhesive tape is thickly wound around a paper core is rotated, and a round blade for cutting is moved toward the core of the adhesive roll. A method of cutting an adhesive roll, which cuts the adhesive roll with the cutting round blade, wherein the approach speed of the cutting round blade with respect to the adhesive roll is 0.5 mm / sec to 3 mm / sec,
After cutting the outer layer that is the outer peripheral portion of the adhesive tape layer of the adhesive roll at this speed, the thick inner layer portion of the adhesive roll and the paper core are cut at a feed speed of the blade of 5 mm / sec to 30 mm / sec. Therefore, the following effects are obtained.

That is, the double cut of the adhesive roll by the cutting blade does not occur, and the adverse effect on the productivity can be minimized.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a main part showing an embodiment of a method for cutting an adhesive roll according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper core 2 Adhesive tape 3 Adhesive roll 31 Outer layer 32 Thick inner layer 4 Round blade for cutting

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B26D 3/16 B26D 1/16 B65H 35/06

Claims (1)

(57) [Claims] 1. An adhesive roll in which an adhesive tape is thickly wound around a paper core is rotated, and a round blade for cutting is brought close to the axis of the adhesive roll. The cutting speed of the round blade for cutting into the adhesive roll is 0.5 mm / sec to 3 mm.
mm / sec, and after cutting the outer layer of the adhesive roll, which is the outer peripheral portion of the adhesive tape layer, at this speed, the inner layer portion of the adhesive roll and the paper core are cut at 5 mm / sec to 30 mm / sec.
A cutting method for an adhesive roll, comprising cutting at a feed speed of a blade.