JPH073227A - Winding core for adhesive tape - Google Patents

Abstract

PURPOSE:To obtain winding cores for adhesive tape being fixed to the adhesive tape on winding and drawn out after completion of the winding. CONSTITUTION:A release sheet 2 having one surface coated with a release agent is wound around the winding core base material so that the releasable face comes to the inside and the sheet 2 is perforated in the widthwise direction 4 and one end of the sheet 2 is fixed onto the core base material and wound around by at least the length of one round of the core from the perforated point.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core for an adhesive tape, and more particularly to a core for an adhesive tape using a flexible material such as woven cloth, non-woven cloth and soft vinyl chloride sheet as a base material.

[0002]

2. Description of the Related Art In a conventional method for producing an adhesive tape, an adhesive is applied to a base material, wound on a core with the adhesive layer side inside, and then slit to a predetermined width with a slitter or the like. The method has been adopted. In the above method, the adhesive tape is attached to the core by a length corresponding to the outer circumference of the core,
Since the core cannot be removed after manufacturing, it is supplied to users with the core attached to the adhesive tape product.

However, since the core which has become unnecessary after the use of the adhesive tape needs to be disposed of by the user, extra labor is required, and the discarded core is not reused, so that resources are saved. There was a problem of wasting it.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to be fixed to an adhesive tape at the time of winding, and after being wound. An object of the present invention is to provide a core for an adhesive tape from which the core can be removed.

[0005]

According to the present invention, there is provided a core for an adhesive tape, wherein a release sheet having a release treatment on one side is wound on a core base material with the release treated surface facing inward. A core for use, wherein perforations are provided in the width direction of the release sheet, and one end of the release sheet is fixed on the core base material, and corresponds to at least one circumference of the core from the perforations. It is characterized by being wound in length.

The core is not particularly limited, and a paper core which is usually used as an adhesive tape or the like is used.

Examples of the release sheet include papers whose one side is subjected to a release treatment with silicon or the like; a laminated body of polyethylene film and papers which are subjected to a release treatment with silicon or the like; one side is subjected to a release treatment with silicon or the like. Examples of the resin film or sheet include polyethylene terephthalate.

The release sheet, as shown in FIG.
Perforations 4 are provided in the width direction, and one end 21 of the release sheet is fixed and wound on the core substrate 1. The release sheet 2 may be fixed at least only when the adhesive tape 6 is wound around the winding core to obtain a predetermined wound body,
As a fixing method, for example, a method of sticking with the adhesive tape piece 5 is adopted.

The winding length of the release sheet 2 is at least one round of the winding core from the perforations 4, and preferably slightly longer than one round. Further, the other end 22 of the release sheet 2 is pasted with the end portion where the adhesive tape 6 starts to be wound and wound on the core to obtain an adhesive tape roll (not shown).

In the above-mentioned adhesive tape roll, the release sheet 2
Since the release treated surface 3 is wound around the core substrate 1, the core substrate 1 is slippery when the adhesive tape 6 is removed from the core, and can be easily taken out. Further, since the release sheet 2 is wound around the perforations 4 by at least one circumference, the adhesive tape 6 is not directly wound around the perforations 4, and the adhesive tape roll (shown in the figure). Remove the core from the release sheet 2 from the perforation 4
The core can be removed from the adhesive tape winding body (not shown) by cutting.

The perforation 4 is not always the release sheet 2
Need not be provided in a direction perpendicular to the longitudinal direction or in a straight line, but may be provided obliquely to the longitudinal direction. The diagonal perforations 4 allow for easier cutting. Further, when the perforations 4 are provided in an oblique direction, the release sheet 2 is wound by a length of at least one turn from the perforations 4 farthest from the one end 21 of the release sheet 2.

Since the release sheet is attached to the inner surface of the adhesive tape roll with the core removed, the adhesive tape roll exhibits stickiness even if it is held by, for example, a holder of a tape cutter. Instead, it can be used in the same manner as an adhesive tape wound body having a winding core.

[0013]

EXAMPLES Examples of the present invention will be described below. (Example 1) One from one end of a high-quality paper (25 mm in width, 500 mm in length) whose one side has been subjected to silicone release treatment on the outer periphery of a paper core base material having a thickness of 3 mm, an inner diameter of 75 mm and a width of 25 mm
A release sheet was provided with perforations at a position of 00 mm. One end of the release sheet was fixed to a core substrate with an adhesive tape, and the release sheet was wound with the release treated surface inside to obtain an adhesive tape core. Then, after sticking the end of the vinyl chloride adhesive tape slit into a width of 25 mm to the other end of the release sheet fixed to the core substrate, in the same direction as the winding direction of the release sheet, An adhesive tape having a length of 20 m was wound around the core to obtain an adhesive tape roll.

Remove the core of the adhesive tape roll,
After the extracted core was cut from the perforations, the release sheet on the core base material was peeled off from the fixing portion. After fixing one end of a new release sheet on the core base material, and winding an adhesive tape in the same manner as above, without any trouble,
An adhesive tape wound body could be produced.

[0015]

The core for an adhesive tape of the present invention is as described above, and it is necessary to dispose of it on the user side, because it is easily extracted from the adhesive tape roll and reused in the manufacturing process of the adhesive tape. This makes it possible to use resources effectively. In addition, in the case of an adhesive tape whose base material is a flexible material such as woven cloth, non-woven cloth, and soft vinyl chloride sheet, it is easy to deform when the winding core is pulled out, and the circular side surface shape is usually transformed into an elliptical shape. Therefore, a larger amount of the adhesive tape can be accommodated in the packaging container such as the cardboard as compared with the adhesive tape having the core.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a core for an adhesive tape of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core substrate 2 Release sheet 21 One end of release sheet 22 Other end of release sheet 3 Release treated surface 4 Perforations 5 Adhesive tape piece 6 Adhesive tape

Claims (1)

[Claims] 1. A core for a pressure-sensitive adhesive tape, wherein a release sheet subjected to a release treatment on one side is wound on a core base material with the release-treated surface inside, and the width direction of the release sheet. Is provided with perforations, one end of the release sheet is fixed on the core substrate,
A core for an adhesive tape, characterized in that a length corresponding to at least one circumference of the core is wound from a perforation.