JP2002012268A - Protective sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective sheet wherein an adhesive is prevented from adhering to an article to be protected and fouling of the article to be protected is prevented. SOLUTION: For this protective sheet, an unvulcanized rubber based adhesive is applied at least on one surface of a deformable material, and the adhesive is dried.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective sheet.

[0002]

2. Description of the Related Art Protective sheets include those which sandwich an article to be protected between them, and those which affix it to an article and cover it. The purpose of the sheet is to absorb external shocks and not transmit the article to the article. . For example, sponge sheet, rubber sheet,
Air cell mats and air caps are also widely used. The air cell mat is a bubble cushioning material in which a number of balloons are formed on one surface of a plastic sheet.

[0003] When such a protective sheet is to be packaged, for example, for a timepiece or an electronic component, it must be individually wrapped and taped with the above-mentioned protective sheet. because,
This is because the contact with other objects may damage or break.

[0004] In order to solve such a drawback, it is conceivable to provide the protective sheet itself with tackiness or adhesiveness to prevent small articles to be protected from falling. For example, there is a method in which an adhesive is applied to the back surface, an object to be protected is placed on the back surface, the protective sheet is folded with the adhesive side inside, and the object to be protected is protected by sticking.

[0005]

However, in the above-described method, the pressure-sensitive adhesive may adhere to the object to be protected and contaminate the object to be protected.

[0006]

In view of the above situation, the present inventor has completed the protective sheet of the present invention as a result of intensive studies, and is characterized by at least one surface of a deformable material. In that an unvulcanized rubber-based adhesive was applied and dried.

Here, the deformable material is a so-called cushion material, and the above-mentioned air cell mat, continuous foamed plastic (sponge), and independent foamed plastic are preferable. The thickness is generally several millimeters to several tens of millimeters.

The unvulcanized rubber adhesive may be a known one,
It does not need to be special. Natural rubber can be used as the rubber, but synthetic rubber such as NBR or neoprene (registered trademark) may be used. Further, a polarizer or a tackifier may be added. The unvulcanized rubber-based adhesive is usually dissolved in a solvent, the solvent is vaporized and scattered, and then the surfaces are brought into close contact with each other to be bonded. In a state where the solvent is vaporized and scattered, the solvent has almost no adhesion to other objects (protected objects and the like). Therefore, the object to be protected is not contaminated.

The surfaces of the unvulcanized rubber-based adhesive are naturally adhered to each other, but this can be adjusted by the applied thickness.
If it is applied thinly, it cannot be easily (naturally) peeled off, but it can be peeled off by hand. Also, if the coating is made thick, it can be prevented from being easily peeled off even if it is peeled off by hand. This thickness was most preferably about 5 to 25 μm in the experiment of the inventor.

The protective sheet of the present invention may be used as it is as a foldable sheet.
For example, a timepiece, an electronic component, or the like may be placed on the adhesive application side of the sheet, and the adhesive side may be fixed by folding the sheet with the application side inside. If this sheet is put in a bag or the like, it is possible to not only protect the watch and electronic parts and the like than in a case where it is put in a bag as it is, but also to prevent loss. Furthermore,
It is also possible to mail the sheet in an envelope.

Of course, before folding, the adhesive-coated surfaces of the same sheet may be stuck together.

Also, when storing small articles, if they are held between the protective sheets of the present invention, it is very convenient to write the name and product name on the surface.

Further, when goods are shipped from a factory,
The protective sheet of the present invention is manufactured continuously, and the small articles are placed on the unvulcanized rubber-based adhesive-coated side at a predetermined interval, and then the sheet of the present invention is cut, folded one by one and mailed. May be used. Further, without cutting first, the same protective sheet may be continuously adhered from above and then cut. In this case, there is no need to fold.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a sectional view showing an example of the protective sheet 1 of the present invention. In this example, an air cell mat is used as the deformable material 2. An unvulcanized rubber-based adhesive 3 having a thickness of 5 μm is applied to the back surface (smooth side) of the air cell mat 2. Of course, as a manufacturing method, an adhesive may be applied after manufacturing the air cell mat, or an air cap sheet may be manufactured using a sheet to which an adhesive has been applied in advance. The total thickness is several millimeters to ten and several millimeters.

FIG. 2 shows the use of a sponge 4 as a deformable material. This can also be used in a manner similar to that of FIG. FIG. 2A is a diagram in which the ring 5 is inserted and folded from the center. FIG. 2B is a diagram in which FIG. The unvulcanized rubber-based adhesives 3 are in close contact with each other, and the ring 5 is in a state where it does not move.

[0016]

The protective sheet of the present invention described above has the following significant effects. (1) Even small objects can be easily protected and fixed.
Since the adhesive does not adhere to the protected article, it does not stain the protected article. Even if unvulcanized rubber-based adhesives are used, the adhesive strength can be adjusted by the coating thickness, so that they can be easily taken out or can be safely bonded. The deformable material provides good protection from impact. It is very convenient for mailing, storing, and carrying broken items and jewelry.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of one example of a protective sheet of the present invention.

FIG. 2 is a sectional view showing a use state of another example of the protective sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective sheet of this invention 2 Deformable material 3 Unvulcanized rubber adhesive 4 Sponge 5 Ring

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[Procedure amendment]

[Submission date] June 29, 2000 (2006.2.
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a sectional view showing an example of the protective sheet 1 of the present invention. In this example, an air cell mat is used as the deformable material 2. An unvulcanized rubber-based adhesive 3 having a thickness of 5 μm is applied to the back surface (smooth side) of the air cell mat 2. Of course, as the manufacturing method, after manufacturing the air cell mats, it is coated with glue, with a sheet coated in advance adhesive Easeruma'
May be manufactured. The total thickness is several millimeters to ten and several millimeters.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016]

The protective sheet of the present invention described above has the following significant effects. (1) Even small objects can be easily protected and fixed. (2) Since the adhesive does not adhere to the protected article, it does not stain the protected article. (3) Even if unvulcanized rubber-based adhesives are used, the adhesive strength can be adjusted by the thickness of the coating, so that the adhesive can be easily taken out or completed.
It can be used for full adhesion . (4) It is sufficiently protected from shock by the deformable material. (5) It is very convenient for mailing, storing, and carrying broken pieces and jewelry.

Continuation of front page (72) Inventor Zento Sato 477-67-1, Inami-cho, Kako-gun, Hyogo Prefecture F-term in Kansai Izumi Co., Ltd. CC08 EA06 FA04

Claims (3)

[Claims] 1. A protective sheet comprising an unvulcanized rubber-based adhesive applied to at least one surface of a deformable material and dried. 2. The protective sheet according to claim 1, wherein the deformable material is a bubble cushioning material. 3. The protective sheet according to claim 1, wherein the deformable material is a foamed plastic sheet.