JP2000019963A - Production of tacky adhesive label laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability in production, to prevent the adhesion of dust and dirt even at the time of use and to improve handling quality at the time of packag ing by laminating plural sheets of tacky adhesive label base materials in such a manner that the parts not formed with tacky adhesive layers overlap on each other and cutting the parts not formed with the tacky adhesive layers with a cutting blade. SOLUTION: The parts 2 formed with the tacky adhesive layers for plural sheets of tacky adhesive labels are formed and the outer peripheries of these parts 2 formed with the tacky adhesive layers are provided with margins 3. Next, the tacky adhesive label base materials 10 are so laminated that these margins 3 overlap on each other. The front surface of the parts 2 formed with the tacky adhesive layers of the tacky adhesive label base material 10 of the lowermost layer is provided with a release sheet consisting of a polyethylene terephthalate film of 38 μm in thickness coated with a silicone-based release agent. Further, the blade edge of the cutting blade of a cutting machine is positioned at the center of the margins 3 of the uppermost layer and the laminated tacky adhesive label base materials 10 are cut at a planned cutting line 5. The other margins 3 are similarly and successively cut. The portions of 10 mm in width of the margins 3 function as turn over parts 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive label laminate in which an adhesive label which can be attached to the surface of an article or a packaging material to indicate the type and handling of the article, the contents of the article, etc. is laminated. It relates to a method for producing a body.

[0002]

2. Description of the Related Art Conventionally, for example, a label indicating the type of cargo, a handling method such as "upside down", "handling care", and a content of the baggage such as "raw" on the surface of a packaging material of the baggage. Used a label having a release paper on the adhesive layer. However, there is a problem that the release paper becomes unnecessary when the label is attached to the surface of the packaging material of the luggage, and the unnecessary release paper comes out as dust. In order to solve this problem, the present inventors eliminate the unnecessary release paper after pasting, a display label laminate that eliminates the work of peeling the release paper, or an adhesive written with a pencil or ballpoint pen A memo stack was developed (Japanese Patent Application Nos. 8-319247 and 9-2).
No. 75909). These labels have a release agent layer on the label surface, or a printed layer and a release agent layer,
The back surface is composed of an adhesive layer partially coated with an adhesive. The pressure-sensitive adhesive label laminate is obtained by laminating a plurality of the labels, laminating the respective pressure-sensitive labels, and cutting the outer periphery with a cutting blade.

[0003]

However, in the above-mentioned pressure-sensitive adhesive label laminate, when the pressure-sensitive adhesive label laminate is cut by the cutting blade, there is a problem that the pressure-sensitive adhesive adheres to the cutting blade and the cutting cannot be performed cleanly. In addition, the adhesive remains on the cut surface of the adhesive label laminate obtained by cutting, and there is a problem that dirt and dust adhere to the adhesive label laminate and the packaging material adheres when individually packaging the adhesive label laminate. There is a problem that the adhesive adheres to the adhesive remaining on the cut surface of the label laminate and the workability of the packaging operation is poor. The present invention has been made in view of the above circumstances, has good workability at the time of manufacture, can prevent adhesion of dust and dust even at the time of use, and has improved workability such as workability at the time of packaging. An object is to provide an excellent adhesive label laminate.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, it has been found that the pressure-sensitive adhesive layer-forming portion and the Plural sheets of the pressure-sensitive adhesive label base material provided with the non-formed portion of the pressure-sensitive adhesive layer along the outer periphery of the formed portion of the pressure-sensitive adhesive layer are laminated so that the non-formed portion of the pressure-sensitive adhesive layer of each pressure-sensitive label base material overlaps, It has been found that the above problem can be solved by cutting the unformed portion of the adhesive layer with a cutting blade, and the present invention has been completed based on this finding.

That is, the present invention provides a pressure-sensitive adhesive layer-forming portion and a pressure-sensitive adhesive layer-free portion along the outer periphery of the pressure-sensitive adhesive layer-forming portion on the back surface of the label substrate having a peelable surface. To prepare a pressure-sensitive adhesive label substrate, laminated a plurality of the pressure-sensitive adhesive label substrate so that the non-formed portion of the pressure-sensitive adhesive layer of each pressure-sensitive adhesive label substrate overlaps, the resulting laminate of the pressure-sensitive adhesive label substrate An object of the present invention is to provide a method for producing an adhesive label laminate, wherein an unformed portion of the adhesive layer is cut with a cutting blade to produce an adhesive label laminate.

The present invention is also directed to the method for producing a pressure-sensitive adhesive label laminate, wherein a plurality of pressure-sensitive adhesive layers, one pressure-sensitive adhesive layer constituting one pressure-sensitive adhesive label, are provided on the back surface of one label substrate. An object of the present invention is to provide a method for producing a pressure-sensitive adhesive label laminate, wherein the pressure-sensitive adhesive label substrate is provided, wherein a plurality of pressure-sensitive adhesive label laminates are produced from a single laminate of pressure-sensitive adhesive label substrates. Further, the present invention, in the method for producing a pressure-sensitive adhesive label laminate, wherein the non-formed portion of the pressure-sensitive adhesive layer is cut with a cutting blade, the cutting edge of the cutting blade is 0.1 mm from the outer periphery of the pressure-sensitive adhesive layer-formed portion. An object of the present invention is to provide a method for producing a pressure-sensitive adhesive label laminate, which is separated from the non-formed portion of the pressure-sensitive adhesive layer and cut. Hereinafter, the present invention will be described in detail.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The label base material used in the present invention is, for example, various papers such as high quality paper, glassine paper, art paper, kraft paper, coated paper, lightweight coated paper, synthetic paper, and the like.
Polyester resin films such as polyethylene terephthalate and polybutylene terephthalate, polyethylene,
Examples thereof include a film of a thermoplastic resin such as a polyolefin resin film such as a polypropylene and a polystyrene resin film, and a laminate of paper and a thermoplastic resin film. The paper may be a laminate, and the thermoplastic resin film may have a single-layer structure or a multi-layer structure of different or similar resin films. Lamination of paper or resin film or lamination of both may be lamination or lamination.

The thickness of the label substrate may be appropriately selected, but is usually in the range of 10 to 300 μm, preferably 2 to 300 μm.
It is in the range of 0 to 200 μm. The size of the label substrate
It may be appropriately selected according to the size of the obtained pressure-sensitive adhesive label, and may be of a size that can produce one or more pressure-sensitive adhesive labels. A large size is efficient in manufacturing and is preferable.

In the present invention, the back of the label substrate is
A portion where the pressure-sensitive adhesive layer is not formed (hereinafter referred to as a blank) is provided along the formation portion of the pressure-sensitive adhesive layer and the outer periphery of the portion where the pressure-sensitive adhesive layer is formed. The shape and size of the formation portion of the pressure-sensitive adhesive layer are not particularly limited as long as the pressure-sensitive adhesive label can be sufficiently adhered to the adherend when the adhesive label is adhered to the adherend. The formation part of the pressure-sensitive adhesive layer may be a continuous layer or a discontinuous layer. In order to produce a plurality of pressure-sensitive adhesive labels from one label substrate, it is sufficient to provide a plurality of pressure-sensitive adhesive layer forming portions corresponding to the plurality of pressure-sensitive adhesive labels on the back surface of the label substrate.
The formation part of the pressure-sensitive adhesive layer may also be provided with a clear part in which the formation part of the pressure-sensitive adhesive layer is not provided at a part of the end of the pressure-sensitive adhesive label laminate, in order to easily peel the pressure-sensitive adhesive label from the pressure-sensitive adhesive label laminate. preferable. The length of the clear portion may be appropriately selected, but is preferably about 0.5 to 3 cm.

Specific examples of the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer include natural rubber, synthetic rubber, acrylic resin, polyvinyl ether resin, urethane resin, and silicone resin. Specific examples of synthetic rubbers include styrene-butadiene rubber, polyisobutylene rubber, isobutylene-isoprene rubber, isoprene rubber, styrene-isoprene block copolymer, styrene-butadiene block copolymer, styrene-ethylene-
Butylene block copolymer and the like. Specific examples of the acrylic resin type include homopolymers or copolymers of acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, ethyl methacrylate, butyl methacrylate, acrylonitrile, and the like. Polymers. Specific examples of the polyvinyl ether resin include polyvinyl ether, polyvinyl isobutyl ether, and polyvinyl ethyl ether. Specific examples of the silicone resin include dimethylpolysiloxane and the like.

The pressure-sensitive adhesive may further contain a tackifier, a filler, a softener, a wax, an antioxidant, an ultraviolet absorber, a crosslinking agent, and the like, if necessary. Various methods can be used to provide the pressure-sensitive adhesive layer forming portion, but a method of applying or printing using a screen plate or a gravure roll is preferable.

On the other hand, examples of the label substrate having a releasable surface include a label substrate made of a releasable material and a label substrate having a release agent layer on the surface. It is not necessary that the entire surface of the label substrate be releasable, and it is sufficient that at least the portion in contact with the pressure-sensitive adhesive layer forming portion has releasability when the adhesive label is laminated. Therefore, the shape and size of the portion having releasability can be selected according to the shape and size of the portion where the pressure-sensitive adhesive layer is formed. In addition, when it is desired to provide an entry portion for writing or stamping with a writing instrument on the surface of the adhesive label, it is preferable that the entry portion has no releasability or a release layer having a writability is applied.
Examples of the release agent used for the release agent layer include a silicone resin-based release agent, a fluorine resin-based release agent, an acrylic resin-based release agent, and an alkyd resin-based release agent. The thickness of the release agent layer is not particularly limited, and may be appropriately selected.

In the present invention, it is preferable to provide a printing layer on the surface of the label substrate. When a print layer is provided on the surface of the label substrate, it is preferable to provide a print layer on the surface of the label substrate before the release agent layer is provided, and to provide the release agent layer on the print layer. The printing layer may be any layer that displays various information such as characters, symbols, figures, colors, or combinations thereof. To provide a printing layer, offset printing, flexographic printing, silk printing, gravure printing,
It can be performed by various printing techniques such as intaglio printing.

When the printability on the label base material is insufficient, it is preferable to provide a filling layer before printing on the surface of the label base material to improve the printability. Further, the filler layer can be provided between the printing layer and the release agent layer in order to prevent the printing ink from penetrating into the release agent layer. As a filler used for this filler layer,
For example, polyethylene resin, polyvinyl alcohol,
Acrylic resin, starch, alkyd resin, styrene
Butadiene copolymer (SBR), a mixture of synthetic rubber and clay, or a mixture of these with fillers such as silica, calcium carbonate, titanium oxide, and zinc oxide may be used.

In the pressure-sensitive adhesive label substrate of the present invention, a blank is provided along the formation portion of the pressure-sensitive adhesive layer and the outer periphery of the formation portion of the pressure-sensitive adhesive layer. It is a label base material provided. Next, in the present invention, a plurality of pressure-sensitive adhesive label substrates are laminated so that the margins of the respective pressure-sensitive adhesive label substrates overlap. The number of laminations of the pressure-sensitive adhesive label substrate may be two or more, and may be appropriately selected according to the request, but is usually about 2 to 300.

A protective layer may be provided on the surface of the uppermost release agent layer of the laminated adhesive label substrate. Examples of the protective layer include a polyethylene laminate layer and a clear varnish layer. Further, a release sheet may be provided on the surface of the lowermost pressure-sensitive adhesive layer forming portion of the laminated pressure-sensitive adhesive label substrate. The release sheet is made of a support substrate having releasability on at least one side, and is usually obtained by subjecting the support substrate to a release treatment. As the supporting substrate, for example, paper,
Synthetic paper, plastic film and the like can be mentioned. Examples of the paper include glassine paper, polyethylene laminated paper and the like, and examples of the plastic film include, for example, a polyethylene resin, a polyolefin resin such as a polypropylene resin, a polybutylene terephthalate resin, a polyester resin such as a polyethylene terephthalate resin,
Examples include, but are not limited to, plastic films such as acetate resins, polystyrene resins, and vinyl chloride resins. These support base materials are subjected to a release treatment with a release treatment agent as necessary. Examples of the release treatment agent used for the release sheet include a silicone resin, an alkyd resin, and a fluororesin. The thickness of the release sheet is not particularly limited, and may be appropriately selected.

In the present invention, finally, the margins of the plurality of laminated adhesive label substrates are cut by a cutting blade. The cutting by the cutting blade at the margin may be performed so as to form the target adhesive label laminate, and it is not always necessary to cut all the margins. For example, when the end of the label base material is provided with a pressure-sensitive adhesive layer forming portion having a margin on the outer periphery, the end of the pressure-sensitive adhesive label base material may be the end of the target adhesive label laminate as it is. In this case, there is no need to cut at the margin at this end. Further, it is preferable that the margin is cut by the cutting blade by cutting the cutting edge with the cutting edge of the cutting blade separated from the outer periphery of the adhesive layer forming portion by 0.1 mm or more and applied to the margin. If the accuracy of lamination of each pressure-sensitive adhesive label substrate is low, the margin will be shifted and laminated,
The outer periphery of the formed portion of the pressure-sensitive adhesive layer of each of the laminated pressure-sensitive adhesive label substrates is in a state where they do not match in the laminating direction, in this case,
The position of the cutting blade may be selected in consideration of the lamination accuracy so that the distance between the outer periphery of the adhesive layer forming portion closest to the cutting edge of the cutting blade and the cutting blade is 0.1 mm or more. Further, when a plurality of pressure-sensitive adhesive layers such that one pressure-sensitive adhesive layer constitutes one pressure-sensitive adhesive label are provided on the back surface of one label substrate, the one pressure-sensitive adhesive label substrate Is usually cut at a plurality of blanks, but the cutting at a plurality of blanks may be performed simultaneously or sequentially.
By this cutting, a plurality of pressure-sensitive adhesive label laminates can be obtained.

The pressure-sensitive adhesive label laminate of the present invention can be used for various applications. For example, it can be used for displaying the type and handling of the article, the contents of the article, etc. on the surface of the article or packaging material. . Specifically, for example, on the surface of the package packaging material, the type of the cargo, a handling method such as "Tenchi no use" or "Handling caution", a label indicating the contents of the package such as "Namamono", a garbage At the time of collection, it can be used as a label or the like for displaying an expression to take care to adhere to the garbage disposal rule for sticking to the garbage bag violating the garbage disposal rule.

[0019]

Next, the present invention will be described more specifically with reference to examples. The present invention is not limited by these examples.

Embodiment 1 FIGS. 1 and 3 show an adhesive label laminate 11 and an adhesive label base material 10 according to one embodiment of the present invention. A high quality paper (basis weight 64 g / m ² ) was used as the label substrate 1, and the surface was printed with, for example, “Handling Precautions” to form a print layer (not shown). Next, using a Meyer bar, a silicone-based release agent as a release agent on the print layer,
0.7 g / m ² was applied to form a release agent layer (not shown). In addition, in order to form a 10 mm-wide metal part 6 also serving as an entry part on one side of the obtained adhesive label laminate 11, a release agent layer is provided on the surface of the label substrate 1 corresponding to the metal part 6. Not provided. Next, an acrylic strong adhesive (trade name: BPW) is applied to the back surface of the high-quality paper as the label substrate 1.
-5157, Toyo Ink Mfg. Co., Ltd.) was printed on a screen having square screens arranged in four rows in a horizontal direction and three rows in a vertical direction, for a total of 12 screens. Forming portion 2 of the adhesive layer for 12 labels is formed,
A margin 3 was provided on the outer periphery of the pressure-sensitive adhesive layer forming portion 2. The space in the horizontal direction between adjacent square-shaped pressure-sensitive adhesive layer forming portions 2 was 1 mm. The application amount of the pressure-sensitive adhesive in the formation portion 2 of the rectangular pressure-sensitive adhesive layer was 20 g / m ² . Further, the adhesive force of the adhesive layer forming portion 2 is 1.5 kg / 25 m.
m. In addition, the label base material 1 corresponding to the
Was not provided with the pressure-sensitive adhesive layer forming portion 2 on the back surface. next,
The pressure-sensitive adhesive label base material 10 is
On the surface of the pressure-sensitive adhesive layer forming portion 2 of the lowermost pressure-sensitive adhesive label substrate 10, a release sheet made of a 38 μm-thick polyethylene terephthalate film coated with a silicone-based release agent was provided. . Further, the laminated pressure-sensitive adhesive label base material 10 is cut at the cutting line 5 as shown in FIG. Sample No. 3 was cut in the same manner. As a result, a margin 3 (a margin width on three sides: 0.5 mm, a margin width on another side:
Twelve pressure-sensitive adhesive label laminates 11 obtained by laminating pressure-sensitive adhesive labels having a thickness of 10 mm) were obtained. Note that a portion having a margin of 3 and a width of 10 mm functions as the clear portion 6.

Example 2 In Example 1, a filler of styrene-butadiene resin mixed with kaolin clay was applied to the surface of the high-quality paper as the label substrate 1 at a rate of 10 g / m ² using an air knife. Except having formed the stopper layer, it carried out similarly to Example 1, and created the adhesive label laminated body 11.

Comparative Example 1 A high-quality paper (basis weight: 64 g / m ² ) was used as the label substrate 1, and the surface was printed with, for example, “Handling Precautions” to form a print layer. Next, 0.7 g of a silicone-based release agent was used as a release agent on this print layer using a Meyer bar.
/ M ² was applied to form a release agent layer. In addition, in order to form the clear part 6 with a width of 0.5 cm on one side of the obtained adhesive label laminate 11, no release agent layer was provided on the surface of the label substrate 1 corresponding to the clear part 6. Next, an acrylic strong pressure-sensitive adhesive (trade name: BPW-5157, Toyo Ink Mfg. Co., Ltd.) was applied to the back surface of the high-quality paper as the label substrate 1 using a reverse coater to form a pressure-sensitive adhesive layer as shown in FIG. Forming part 2 was formed. The coating amount of the pressure-sensitive adhesive in the pressure-sensitive adhesive layer forming portion 2 was 20 g / m ² . Also, the pressure-sensitive adhesive layer forming portion 2
Had an adhesion of 20 kg / 25 mm. Next, the label substrate 1 provided with the pressure-sensitive adhesive layer forming section 2 was
0 sheets are laminated, and the lowermost pressure-sensitive adhesive layer of the pressure-sensitive adhesive layer forming part 2
A release sheet was provided on the surface of. Further, the laminated label base materials 10 were sequentially cut by a cutting machine along a predetermined cutting line 5 as shown in FIG. As a result, 12 pressure-sensitive adhesive label laminates 11 each having a pressure-sensitive adhesive label having no margin 3 on three sides as shown in FIG. 2 were obtained. Note that a portion having a width of 10 mm at the end where the pressure-sensitive adhesive layer forming portion 2 is not provided is the clear portion 6.

Next, the adhesive label laminates 11 of the examples and comparative examples were evaluated for the following evaluation items. The results are shown in Table 1. (1) Attachment of adhesive to cutting blade during cutting: The state of adhesion of the adhesive to the cutting blade when adhesive label laminate 11 was cut by a cutting machine was visually observed. (2) Adhesion of dust to cut surface of adhesive label laminate 11: The obtained adhesive label laminate 11 was left in a room with dust for 1 hour, and then the state of dust adhesion on the cut surface of adhesive label laminate 11. Was visually observed. (3) Workability of individual packaging: When the operation of putting the adhesive label laminate 11 in the polyethylene bag is performed, the polyethylene bag adheres to the cut surface of the adhesive label laminate 11 so that the bag placing operation is deteriorated. Was evaluated.

[0024]

[Table 1]

[0025]

According to the present invention, a self-adhesive label laminate having good workability at the time of manufacture, preventing adhesion of dust and dust even at the time of use, and having excellent handleability such as workability at the time of packaging. Can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of an adhesive label laminate obtained in Example 1.

FIG. 2 is a perspective view of an adhesive label laminate of Comparative Example 1.

FIG. 3 is a back view of the pressure-sensitive adhesive label substrate manufactured in Example 1.

FIG. 4 is a back view of the pressure-sensitive adhesive label substrate manufactured in Comparative Example 1.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Label base material 2 Forming part of adhesive layer 3 Margin 4 Cutting surface 5 Expected cutting line 6 Mark part 10 Adhesive label base material 11 Adhesive label laminate

Claims (3)

[Claims] 1. A pressure-sensitive adhesive label base comprising: a pressure-sensitive adhesive layer-formed portion and a pressure-sensitive adhesive layer-free portion provided along the outer periphery of the pressure-sensitive adhesive layer-formed portion on the back surface of a label substrate having a releasable surface. A material is prepared, and a plurality of the pressure-sensitive adhesive label substrates are laminated so that the unformed portions of the pressure-sensitive adhesive layer of each pressure-sensitive adhesive label substrate overlap each other, and the pressure-sensitive adhesive layer of the obtained pressure-sensitive adhesive label substrate laminate is obtained. A method for producing an adhesive label laminate, comprising cutting an unformed portion with a cutting blade to produce an adhesive label laminate. 2. A pressure-sensitive adhesive label substrate comprising a plurality of pressure-sensitive adhesive layers provided such that one pressure-sensitive adhesive layer constitutes one pressure-sensitive adhesive label on the back surface of one label substrate. The method for producing a pressure-sensitive adhesive label laminate according to claim 1, wherein a plurality of pressure-sensitive adhesive label laminates are produced from the pressure-sensitive adhesive label substrate laminate. 3. The step of cutting the non-formed portion of the pressure-sensitive adhesive layer with a cutting blade, the cutting edge of the cutting blade is separated from the outer periphery of the formed portion of the pressure-sensitive adhesive layer by 0.1 mm or more. The method for producing a pressure-sensitive adhesive label laminate according to claim 1, wherein the pressure-sensitive adhesive label laminate is cut by being applied to a part.