JPH04315193A - Multi-layered label - Google Patents

Abstract

PURPOSE:To offer the multi-layered label which is used alone to control a packing material and a product and can repeatedly be peeled and stuck on the product. CONSTITUTION:This multi-layered label consists of a peeling base material layer I consisting of a peeling base material and a 1st peeling layer formed on the peeling base material, an intermediate base material layer II consisting of a strong cohesive layer which is provided on the 1st peeling layer and had 200-3000g/25mm cohesive strength, an intermediate base material provided on the cohesive layer, and a 2nd peeling layer formed on the top surface side of the intermediate base material, and a display base material layer III consisting of a weak cohesive layer which is formed on the 2nd peeling layer and has 20-1000g/25mm cohesive strength and can repeatedly be peeled and stuck, and a display base material which is provided on the cohesive layer and has a display part formed on the top surface.

Description

[Detailed description of the invention]

0001

TECHNICAL FIELD OF THE INVENTION The present invention relates to a multilayer label, and more particularly to a multilayer label having a weak adhesive layer and a strong adhesive layer that can be repeatedly peeled and pasted.

0002

TECHNICAL BACKGROUND OF THE INVENTION In recent years, in the process management and distribution management of products, management methods using labels on which manufacturing lots, product numbers, etc. are printed have been widely practiced.

[0003] The above-mentioned label is usually coated with an adhesive having strong adhesive strength so that the label does not peel off from the adherend such as a product during use. Generally, products such as steel are transported and transported in a packaged state, and are opened and used when used. By the way, product management for steel and other products involves, for example, attaching labels to packaging materials.
The product was then removed from the packaging and another label was applied. That is, in order to manage steel products, at least two types of labels are required: one for packaging materials and one for products. Therefore, there was a problem in that two or more types of labels had to be printed.

[0004] In order to solve these problems in product management, it is conceivable to attach a removable label to the packaging material, peel it off, and affix it to the product, but this label does not attach to the packaging material. The adhesive strength of the label was weak, and the label sometimes floated or fell during transportation of the packaging material.

[0005]

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and it is possible to manage packaging materials and products with one label, and the product can be repeatedly peeled.
The purpose of the present invention is to provide a multilayer label that can be attached and used.

[0006]

Summary of the Invention The multilayer label according to the present invention includes a release base layer [I] consisting of a release base material and a first release layer formed on the release base material, and a release base layer [I] provided on the first release layer. Adhesive strength is 20
An intermediate base material layer [II] consisting of a strong adhesive layer having a thickness of 0 to 3000 g/25 mm, an intermediate base material provided on the adhesive layer, and a second peeling layer formed on the upper surface side of the intermediate base material; The adhesive strength formed on the second release layer is 20 to 1000g/25m
It is characterized by being composed of a display base material layer [III] consisting of a weak adhesive layer that can be repeatedly peeled and pasted and a display base material that is provided on the adhesive layer and has a display section formed on its surface. .

[0007]

DETAILED DESCRIPTION OF THE INVENTION The multilayer label according to the present invention will be explained below with reference to FIG. First, the release base layer [I] constituting the multilayer label according to the present invention will be explained.

[0008] As the release base material 1 constituting the release base layer [I], commonly used paper, woven fabric, plastic film, synthetic paper, etc. can be used. The thickness of the release base material 1 as described above is usually 10 to 150 μm, although not particularly limited.

[0009] A first release layer 1a is provided on such a release base material 1, and this first release layer 1a can be formed by applying an ordinary release agent to the surface of the release base material 1, for example. It is formed. As the release agent, a silicone release agent, a polybutadiene rubber release agent, a styrene-butadiene copolymer release agent, an alkyd-silicone copolymer release agent, etc. are used. For example, the strong adhesive layer 2 described later
If it is made of an acrylic or rubber adhesive, a silicone release agent is used, and if it is made of a silicone adhesive, a polybutadiene rubber release agent, a styrene-butadiene copolymer release agent, Alkyd-silicone copolymer release agents are preferably used.

The thickness of the first peeling layer 1a formed in this way is not particularly limited, but is usually 0.01 to 5 μm.
, preferably 0.05 to 2 μm. Next, the intermediate base material layer [II] according to the present invention will be explained.

[0011] The intermediate base layer [II] is the release base layer [I]
is placed above. The intermediate base material layer [II] includes a strong adhesive layer 2 formed on the first peeling layer 1a as described above, an intermediate base material 3 provided on this strong adhesive layer 2, and an upper surface of the intermediate base material 3. and a second peeling layer 3a formed on the second peeling layer 3a.

[0012] As the intermediate base material 3 constituting the intermediate base layer [II], common film and sheet materials are used. For example, polyethylene terephthalate, polyvinyl chloride, polypropylene, polyethylene,
Examples include synthetic resins such as cellulose acetate, synthetic paper and paper, textiles, aluminum foil, and the like.

Among these, synthetic paper, polyethylene terephthalate, and polypropylene are preferably used. The thickness of the intermediate base material 3 is not particularly limited, but is usually 5 to 5.
It is 200 μm, preferably 10 to 100 μm. No display printing is performed on the surface of this intermediate base material 3.

A second release layer 3a is formed on the upper surface of the intermediate base material 3. Such a second release layer 3a can be formed in the same manner as the first release layer 1a described above. The thickness of the second peeling layer 3a formed in this manner is not particularly limited, but is usually 0.01 to 5 μm.

Furthermore, as the strong adhesive layer 2 constituting the intermediate base layer [II], a wide variety of conventionally known ones can be used. The adhesive strength of the adhesive forming the strong adhesive layer 2 is 20
0-3000g/25mm, preferably 1000-25
00g/25mm.

Specific examples of the above-mentioned adhesives include acrylic adhesives, natural rubber adhesives, synthetic rubber adhesives, and silicone adhesives. The thickness of the strong adhesive layer 2 as described above is not particularly limited, but is usually 5 to 100 μm, preferably 10 to 80 μm.
It is m. The strong adhesive layer 2 may be formed by applying an adhesive to the entire back surface of the intermediate base material 3, or may be formed by forming a portion where the adhesive is not applied, that is, a so-called knob portion.

The intermediate base material layer [II] having such a strong adhesive layer 2 has strong adhesion to the adherend, especially when the adherend is a packaging material such as paper. It has excellent adhesiveness and will not fall off during use.

The display base layer [III] is provided on the intermediate base layer [II] as described above. This display base material layer [I
II] consists of a weak adhesive layer 4 formed on the second peeling layer 3a and a display base material 5 having a display portion 5a formed on its surface.

In the present invention, the same material as the intermediate base material 3 described above is used as the display base material 5. Among these, materials with a small thermal shrinkage rate are preferably used as the display substrate 5, and polyethylene terephthalate, polypropylene, and synthetic paper are preferably used.

The thickness of the display substrate 5 as described above is not particularly limited, but is usually 25 to 150 μm, preferably 50 to 100 μm. A display section 5a on which display contents are printed is formed on the surface of the display base material 5. The display section 5a displays a product name, product number, manufacturing lot number, barcode, etc.

Next, the weak adhesive layer 4 made of an adhesive which can be repeatedly peeled and pasted and which constitutes the display base layer [III] will be explained. In the present invention, the adhesive forming the weak adhesive layer 4 is a pressure-sensitive adhesive that can be repeatedly peeled and pasted onto the adherend, and leaves no trace of the adhesive on the adherend after peeling. A non-residue adhesive is used. For example, such adhesives are disclosed in JP-A-50-2736, JP-A-61-148278, and JP-A-61-14.
It is described in JP-A No. 8279, JP-A-61-281173, JP-A-59-159868, etc.

[0022] It is preferable to provide a layer made of an anchoring binder between the display substrate 5 and the weak adhesive layer 4. As such an anchoring binder, epoxy resin, nitrocellulose, acrylate resin, polyvinyl ether, polyurethane, chlorinated polypropylene resin, etc. are used.

In the present invention, the adhesive force forming the weak adhesive layer 4 is 20 to 1000 g/25 mm, preferably 50 to 500 g/25 mm. The thickness of the weak adhesive layer 4 formed of the above adhesive is not particularly limited, but is usually 1 to 200 μm, preferably 5 to 50 μm.
It is m. The weak adhesive layer 4 may be formed by coating the entire surface of the back surface of the display substrate 5 with an adhesive, or may be formed by forming a portion where the adhesive is not coated, that is, a so-called knob portion.

[0024] This display base material layer [III] is a weak adhesive layer 4.
Repeatedly attach and peel off the adhesive to the adherend via the adhesive. Furthermore, even after peeling off the display base layer [III], it is preferable that no traces of the adhesive remain on the adherend or that the surface of the adherend is peeled off. In addition, the display base material layer [III] having the weak adhesive layer 4 as described above has good adhesion to oil films, and is particularly suitable for use when the adherend is a steel product whose surface is covered with an oil film. It exhibits the property of not easily peeling off.

The multilayer label according to the present invention has a display base material 5 having a display portion 5a formed on its surface as described above, and a display base material layer [III] consisting of a weak adhesive layer 4. but,
You may have two or more such display base material layers [III].

A method of using the multilayer label according to the present invention as described above will be explained in detail. First, the multilayer label is peeled off from the release base layer [I] and attached to the packaging material in which the product is packaged, via the strong adhesive layer 2. In a packaging material to which a multilayer label is attached, display contents can be known from the display portion 5a of the display base material layer [III].

[0027] Such packaging materials include paper, synthetic paper,
Examples include oil paper, styrofoam, synthetic resins such as polyethylene, polypropylene, and polyester, laminates thereof, and wooden boxes.

[0028] The product may be any product as long as it can be managed using a general label, preferably a steel product. Next, the display base layer [III] of the multilayer label is peeled off from the intermediate base layer [II] and attached to the product taken out from the packaging material via the weak adhesive layer 4. In the product to which the display base material layer [III] is attached, the display content can be known from the display section 5a. When repackaging the product after processing, etc., the display base material layer [
III] is peeled off from the product and then reattached onto the packaging material via the weak adhesive layer 4. As a result, the packaging material is given the display contents again.

[0029]

Effects of the Invention The multilayer label according to the present invention has a display base material layer that can be repeatedly pasted and peeled off, and an intermediate base material layer with strong adhesive strength, so that the packaging material and the product can be combined into one sheet. Can be managed with labels. Furthermore, the display base material layer can be used by repeatedly peeling and pasting onto a product.

[0030] The present invention will be explained below with reference to Examples.
The present invention is not limited to these examples.

[0031]

[Example 1] A strong acrylic adhesive was applied to a thickness of 30 μm on the release-treated surface of an 80 μm release paper (release base layer [I]) treated with silicone to form a strong adhesive layer. . On the strong adhesive layer, a 38 μm thick polyethylene terephthalate (hereinafter referred to as PET) film (intermediate base layer [II]), one side of which had been release-treated with silicone, was laminated on the non-release-treated side. Next, this PET
A polyester-based synthetic material in which a printed display area is formed on one side of the film on the release-treated side, and a weak adhesive layer is formed by applying a microspherical acrylic weak adhesive to a thickness of 10 μm on the opposite side. Paper (display base material layer [III]) was laminated via the weak adhesive layer to obtain a multilayer label of the present invention. Ten such multilayer labels were manufactured.

[0032] These labels were peeled off from the release paper corresponding to the release base layer [I] to expose the strong adhesive layer, and a piece of steel with a width of 5 cm and a length of 10 cm with oil on the surface was packaged. The sample was pasted on the surface of 10 packaging materials (packaging materials laminated with oil paper and polyethylene). Next, take out the steel pieces from each of the packaging materials (10 pieces in total), peel off the synthetic paper corresponding to the display base material layer [III] from the PET film corresponding to the intermediate base layer [II] to expose the weak adhesive layer, This was pasted on the surface of each steel piece. Thereafter, the synthetic paper was peeled off and reattached to the surface of the steel piece, and the adhesive could be reliably attached. This operation was repeated four times after that, but no problems such as peeling of the labels occurred even after repeated peeling and adhesion of all the labels.

[0033]

[Example 2] The strong adhesive is synthetic rubber, the intermediate base material 3 is a polypropylene film with a thickness of 40 μm, and the surface base material 5 is laminated with a weak adhesive layer with a thickness of 80 μm. Polyurethane resin anchoring properties are applied to the surface to be laminated. Ten multilayer labels of the present invention were manufactured in the same manner as in Example 1, except that a layered polyester synthetic paper with a thickness of 80 μm was used.

Next, repeated adhesion and peeling tests were conducted in the same manner as in Example 1, and no problems such as peeling occurred with any of the labels.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of a multilayer label according to the present invention.

[Explanation of symbols]

[I] Release base layer 1: Release base material 1a: First release layer [II]
Intermediate base material layer 3: Intermediate base material 3a: Second peeling layer 2: Strong adhesive layer [III] Display base material layer

Claims (2)

[Claims] [Claim 1] A release base material; a first release base material formed on the release base material;
a release base material layer [I] consisting of a release layer, a strong adhesive layer with an adhesive force of 200 to 3000 g/25 mm provided on the first release layer, and an intermediate base material provided on the adhesive layer; The intermediate base material layer [II] consists of a second release layer formed on the upper surface side of the intermediate base material, and the adhesive force formed on the second release layer is 2.
Consisting of a display base material layer [III] consisting of a weak adhesive layer of 0 to 1000 g/25 mm and capable of being repeatedly peeled and pasted, and a display base material provided on the adhesive layer and having a display portion formed on its surface. A multi-layer label featuring 2. The multilayer label according to claim 1, having two or more display base material layers [III].