JP2020095112A - Pseudo adhesive label - Google Patents

Abstract

To provide a pseudo adhesive label that has stable pseudo adhesion, and a method of manufacturing the pseudo adhesive label.SOLUTION: A base material, a first resin layer 12, a second resin layer 13, a pressure-sensitive adhesive layer 14, and a release sheet 15 are laminated in this order, and the first resin layer and second resin layer are in a pseudo adhesion state, wherein one layer (α) between the first resin layer and second resin layer is a layer formed of a resin composition (A) including silylated polyolefin (D) and also including, as a main agent, olefin-based resin (X1) other than silylated polyolefin (D), and the other layer (β) between the first resin layer and second resin layer is a layer formed of a resin composition (B) including, as a main agent, olefin-based resin (X2) other than silylated polyolefin (D), the olefin-based resin (X1) and olefin-based resin (X2) being different from each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pseudo adhesive label.

The pseudo-adhesive label is a label that can be easily peeled off the base material from the pseudo-adhered layer as a starting point after being attached to an adherend, and has been put to practical use, for example, as a delivery slip or an information hiding label.
As such a pseudo adhesive label, in Patent Document 1, a base material, a first resin layer, a second resin layer, an adhesive layer, and a release sheet are laminated in this order, and a first resin layer and a second resin layer are formed. A pseudo-adhesive label is disclosed in which the spaces between the two are pseudo-bonded, and the combination of the first resin layer and the second resin layer is polyethylene, polypropylene or the like. The pseudo-adhesive label having such a structure utilizes a property that after being attached to an adherend with an adhesive layer, the pseudo-adhesive layer can be easily peeled off between the first resin layer and the second resin layer that are pseudo-adhesive, At the timing, the base material is separated from the second resin layer together with the first resin layer.

Patent No. 4870998

In the following description, the base material peeled from the second resin layer and separated from the pseudo adhesive label and the first resin layer are collectively referred to as a "separation base material".

From the viewpoint of improving the productivity and processability of the pseudo adhesive label, it is considered desirable to increase the extrusion temperature of the resin composition when laminating the first resin layer and the second resin layer on the base material.
However, when both the first resin layer and the second resin layer are formed of an olefin resin as in the pseudo adhesive label disclosed in Patent Document 1, these are different olefin resins such as polyethylene and polypropylene. Even with a combination of, if the extrusion temperature of the resin composition is increased when forming the first resin layer and the second resin layer, there is a problem that the first resin layer and the second resin layer cannot be peeled between layers. Can happen. That is, there may occur a problem that the first resin layer and the second resin layer cannot be pseudo-bonded.
Further, even if the first resin layer and the second resin layer can be temporarily adhered to each other, peeling may occur between the first resin layer and the second resin layer in the subsequent processing stage. In some cases, the peel resistance during processing may not be sufficient.
While having such a problem, using an olefin-based resin for both the first resin layer and the second resin layer is not suitable for providing a pseudo-adhesive label in view of availability of materials and cost. It can be said to be desirable.

Therefore, according to the present invention, an olefin resin can be used as a resin for forming the first resin layer and the second resin layer, which is excellent in productivity and workability, and exhibits stable pseudo-adhesiveness. An object of the present invention is to provide a method for manufacturing a label and a pseudo adhesive label.

The present inventors have laminated a base material, a first resin layer, a second resin layer, a pressure-sensitive adhesive layer, and a release sheet in this order, pseudo-bonding between the first resin layer and the second resin layer, and Regarding a pseudo adhesive label using an olefin resin as a resin composition for forming one resin layer and a second resin layer, a resin composition for forming one of the first resin layer and the second resin layer It has been found that the above problems can be solved by blending a specific resin in the product.

That is, the present invention relates to the following [1] to [9].
[1] A base material, a first resin layer, a second resin layer, a pressure-sensitive adhesive layer, and a release sheet are laminated in this order, and the first resin layer and the second resin layer are pseudo-bonded to each other,
One of the first resin layer and the second resin layer (α) contains a silylated polyolefin (D), and contains an olefin resin (X1) other than the silylated polyolefin (D) as a main agent. A layer formed from the resin composition (A) containing
The other layer (β) of the first resin layer and the second resin layer was formed from a resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component. Layers,
A pseudo adhesive label in which the olefin resin (X1) and the olefin resin (X2) are different from each other.
[2] The pseudo adhesive label according to the above [1], wherein the content of the olefin resin (X1) is 50% by mass or more based on the total amount of the resin composition (A).
[3] The pseudo adhesive label according to the above [1] or [2], wherein the mixed mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is 1/99 or more.
[4] The pseudo adhesive according to any one of the above [1] to [3], wherein the content of the olefin resin (X2) is 50% by mass or more based on the total amount of the resin composition (B). label.
[5] The above [1] to [4], wherein one of the olefin resin (X1) and the olefin resin (X2) has a constitutional unit derived from ethylene and the other resin has a constitutional unit derived from propylene. The pseudo adhesive label according to any one of 1.
[6] The content of the ethylene-derived structural unit is 50% by mass or more based on all the structural units of the one resin,
The pseudo adhesive label according to the above [5], wherein the content of the propylene-derived constitutional unit is 50% by mass or more based on all the constitutional units of the other resin.
[7] The method for producing a pseudo adhesive label according to any one of [1] to [6] above, which includes the following steps (1) to (4).
Step (1): A resin composition (A) containing a silylated polyolefin (D) and an olefin resin (X1) other than the silylated polyolefin (D) is prepared.
Step (2): A resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component is prepared. However, the olefin resin (X1) and the olefin resin (X2) are different from each other.
Step (3): One of the resin composition (A) and the resin composition (B) is used as the first resin layer, and the other of the resin composition (A) and the resin composition (B) is used as the second resin. As the layer, a laminate in which the first resin layer and the second resin layer are pseudo-bonded to each other, and the base material, the first resin layer, and the second resin layer are laminated in this order. Create.
Step (4): An adhesive layer and a release sheet are laminated in this order on the surface of the second resin layer opposite to the pseudo adhesive surface.
[8] In the step (1), the mixture mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is adjusted to 1/99 or more,
In the step (3), the first resin layer and the second resin layer are laminated on a base material by coextrusion at an extrusion temperature of 200° C. or more to produce the laminate, and the above [7] is described. Manufacturing method of pseudo adhesive label.
[9] In the step (1), the mixture mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is adjusted to 30/70 or more,
In the step (3), the first resin layer and the second resin layer are laminated on a base material by coextrusion at an extrusion temperature of 280° C. or higher to produce the laminate, and the above [7] is described. Manufacturing method of pseudo adhesive label.

The pseudo-adhesive label of the present invention can use an olefin resin as a resin for forming the first resin layer and the second resin layer, and is excellent in productivity and processability and exhibits stable pseudo-adhesiveness.

It is a cross-sectional schematic diagram which shows one aspect of the pseudo adhesive label of this invention.

Hereinafter, the present invention will be described in detail with reference to embodiments.

In addition, in this invention, for example, "(meth)acrylic acid" shows both "acrylic acid" and "methacrylic acid", and other similar terms are also the same.

In the present invention, with respect to a preferable numerical value range (for example, the range of the content or the like), the lower limit value and the upper limit value described stepwise can be independently combined. For example, from the description "preferably 10 to 90, more preferably 30 to 60", the "preferable lower limit value (10)" and the "more preferable upper limit value (60)" are combined to obtain "10 to 60". You can also

<Structure of pseudo adhesive label>
In the pseudo adhesive label of the present invention, a base material, a first resin layer, a second resin layer, an adhesive layer, and a release sheet are laminated in this order, and the first resin layer and the second resin layer are pseudo-adhered. There is no particular limitation as long as it has the above configuration.
FIG. 1 is a schematic cross-sectional view of a pseudo adhesive label showing the structure of the pseudo adhesive label of the present invention.

In the pseudo adhesive label of the present invention, like the pseudo adhesive label 1 shown in FIG. 1, a base material 11, a first resin layer 12, a second resin layer 13, an adhesive layer 14, and a release sheet 15 are laminated in this order. The first resin layer 12 and the second resin layer 13 are pseudo-bonded at the interlayer A.
In the pseudo adhesive label of the present invention, one layer (α) of the first resin layer 12 and the second resin layer 13 contains a silylated polyolefin (D), and an olefin other than the silylated polyolefin (D). The other layer (β) of the first resin layer 12 and the second resin layer 13 is a layer formed from the resin composition (A) containing the resin (X1) as the main component, and the silylated polyolefin (D A layer formed of a resin composition (B) containing an olefin resin (X2) other than the above) as a main component. Thereby, the first resin layer 12 and the second resin layer 13 can be pseudo-bonded at the interlayer A.
The line illustrated as the interlayer A in FIG. 1 is an emphasized line indicating that the first resin layer 12 and the second resin layer 13 are directly laminated. That is, another layer is not provided between the first resin layer 12 and the second resin layer 13.
In addition, "pseudo-adhesion" is a type of adhesion that allows peeling by delamination between layers that have been bonded under specific conditions (temperature range, etc.), but does not show re-adhesiveness or tackiness after peeling. Say.
In the case of the pseudo-adhesive label of the present invention, it is possible to peel by interlayer peeling in the interlayer A between the first resin layer 12 and the second resin layer 13, but the interlayer A side surface of the first resin layer 12 after peeling, Also, the surface of the second resin layer 13 on the side of the interlayer A does not exhibit re-adhesiveness/adhesiveness.

In the pseudo-adhesive label of the present invention, the release sheet 15 is peeled off and the pressure-sensitive adhesive layer 14 is applied to the adherend, and then the base material 11 is peeled off from the second resin layer 13 together with the first resin layer 12. 21 and the adherend-side residual portion 22 are separated.
Here, in the pseudo adhesive label of the present invention, one layer (α) of the first resin layer 12 and the second resin layer 13 contains the silylated polyolefin (D), and the silylated polyolefin (D). Is a layer formed from a resin composition (A) containing an olefin resin (X1) other than the above as a main component, and the other layer (β) of the first resin layer 12 and the second resin layer 13 is silylated. It is a layer formed from the resin composition (B) containing an olefin resin (X2) other than the polyolefin (D) as a main component, and the olefin resin (X1) and the olefin resin (X2) are different from each other. As a result, an olefin resin can be used as the resin for forming the first resin layer 12 and the second resin layer 13. Moreover, although both the first resin layer 12 and the second resin layer 13 contain an olefin resin as a main component, the extrusion temperature of the resin composition when forming the first resin layer and the second resin layer Can be improved to improve productivity and workability. In addition, it becomes possible to provide a pseudo adhesive label having stable pseudo adhesive properties, which is compatible with both ease of peeling operation and resistance to natural peeling.

The thickness of the base material is appropriately selected according to the application of the pseudo adhesive label, but from the viewpoint of handleability, it is preferably 10 to 200 μm, more preferably 20 to 150 μm, and further preferably 30 to 100 μm. is there.
The thickness of the first resin layer is not particularly limited, but is preferably 5 to 50 μm, more preferably 5 to 40 μm, still more preferably 10 to 40 μm, and even more preferably 10 to 30 μm.
From the viewpoint of handleability, the ratio of (base material thickness)/(first resin layer thickness) is preferably 1 to 10, more preferably 2 to 9, still more preferably 3 to 8, and even more preferably 4 ~6.
The thickness of the second resin layer is not particularly limited, but in consideration of the fact that the second resin layer remains on the adherend together with the pressure-sensitive adhesive layer, it is thin to reduce the presence after being left on the adherend. Preferably. Specifically, 5 to 50 μm is preferable, 5 to 40 μm is more preferable, 10 to 40 μm is further preferable, 5 to 30 μm is still more preferable, and 5 to 20 μm is still more preferable.
The thickness of the pressure-sensitive adhesive layer is appropriately selected according to the application of the pseudo adhesive label, but is preferably 1 to 50 μm, more preferably 5 to 50 μm, further preferably 10 to 40 μm, still more preferably 10 to 30 μm. Even more preferably, it is 10 to 20 μm.
The thickness of the release sheet is not particularly limited, but is preferably 10 to 200 μm, more preferably 25 to 170 μm, further preferably 30 to 150 μm, still more preferably 35 to 100 μm, and still more preferably 35 to 80 μm.
The thickness of the base material, the thickness of the first resin layer, the thickness of the second resin layer, the thickness of the pressure-sensitive adhesive layer, and the thickness of the release sheet, for example, the method described in Examples described later. Can be used to measure.

Hereinafter, each component of the pseudo adhesive label of the present invention will be described in detail.

<Substrate>
The base material of the pseudo adhesive label of the present invention is not particularly limited and is appropriately selected from base materials used in conventional pseudo adhesive labels according to the purpose of use of the pseudo adhesive label.
Examples of such a substrate include kraft paper, high-quality paper, glassine paper, parchment paper, rayon paper, coated paper, paper such as synthetic fiber paper, polyester resin, polyvinyl chloride resin, polyvinylidene chloride resin, Examples thereof include resin films such as polyolefin resins, synthetic paper, and laminated sheets in which two or more layers of these are laminated.

Here, it is preferable that the base material of the pseudo adhesive label of the present invention has thermosensitive color development. Since the base material has a thermosensitive coloring property, printing by a thermal printer or the like becomes possible.
The thermosensitive color-developing base material is preferably one in which a thermosensitive color-developing layer is provided on the surface of the base material opposite to the surface on which the first resin layer is laminated. Examples of the thermosensitive coloring layer include those containing a leuco dye and a developer that reacts with the leuco dye.
The thermosensitive coloring layer is, for example, a coating liquid containing a binder, a wax, a solvent and the like in addition to the leuco dye and the developer described above, is applied to the surface of the base material opposite to the first resin layer laminating surface. It is formed by doing.

Further, when the pseudo adhesive label of the present invention is used for concealing the items to be adhered, it is preferable to use a substrate having a concealing property. As the base material having the concealing property, for example, a black paint that imparts the concealing property to a base material such as opaque papers and synthetic papers, or a base material such as a transparent resin film, and a white paint as a base for printing. Examples of the opaque base material that are overcoated with the above are preferable. From the viewpoint of providing good printing/printability in addition to the hiding property, it is preferable to use a base material such as paper or synthetic paper. When a base material such as paper or synthetic paper having insufficient opacity is used, a black coat treatment or the like may be applied to the surface of the base material opposite to the heat-sensitive color developing layer side in order to further improve the hiding property. ..

<One layer (α)>
In the pseudo adhesive label of the present invention, one layer (α) is selected from one of the first resin layer and the second resin layer.
One layer (α) is a layer formed from a resin composition (A) containing a silylated polyolefin (D) and an olefin resin (X1) other than the silylated polyolefin (D) as a main component. ..
Here, "comprising the olefin resin (X1) as a main component" means that among the components contained in the resin composition (A), the most contained component is the olefin resin (X1).
The resin composition (A) forming the one layer (α) may contain a resin other than the olefin resin (X1) and the silylated polyolefin (D) as long as the effect of the present invention is not impaired. Furthermore, if necessary, additives for resin films and the like may be included.
The content of the olefin resin (X1) in the resin composition (A) is preferably 50 to 99 mass%, more preferably 60 to 97 mass% with respect to the total amount (100 mass%) of the resin composition (A). %, and more preferably 65 to 95% by mass.
The total content of the olefin resin (X1) and the silylated polyolefin (D) in the resin composition (A) is preferably 55 to the total amount (100% by mass) of the resin composition (A). 100% by mass, more preferably 65 to 100% by mass, still more preferably 75 to 100% by mass, still more preferably 85 to 100% by mass, still more preferably 95 to 100% by mass.
The mixing mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is preferably 1/99 or more, more preferably 3/97 or more, still more preferably 5/95 or more, It is more preferably 8/92 or more, still more preferably 10/90 or more, still more preferably 20/80 or more, still more preferably 30/70 or more. The mixing mass ratio (D/X1) is preferably 50/50 or less, more preferably 40/60 or less, and even more preferably 35/65 or less.
When the mixing ratio of the silylated polyolefin (D) is too small, the first resin layer and the second resin layer are simulated while increasing the extrusion temperature of the resin composition when forming the first resin layer and the second resin layer. It becomes difficult to obtain the effect of bonding. On the contrary, if the mixing ratio of the silylated polyolefin (D) is too large, the raw material cost will increase.

Hereinafter, each component contained in the resin composition (A) will be described.
In addition, in this invention, "content of each component with respect to the total amount of the active ingredient of the resin composition (A)" is "of each component in one layer (α) formed from the resin composition (A). It can also be regarded as "content".

[Silylated polyolefin (D)]
The silylated polyolefin (D) is a structural unit (d1) derived from a hydrosilane compound (d1′) (hereinafter, also referred to as “monomer (d1′)”) containing one or more of the following general formula (1) as a structural unit. , And a structural unit (d2) derived from a terminal double bond-containing polyolefin (d2′) (hereinafter, also referred to as “monomer (d2′)”).
In the silylated polyolefin (D), -Si-H in the hydrosilane compound (d1') is reacted with -C=C (vinyl group) in the terminal double bond-containing polyolefin (d2'), -Si-. Includes a CC structure.
The polymerization form of the copolymer of the hydrosilane compound (d1′) and the terminal double bond-containing polyolefin (d2′) is not particularly limited, and may be a random copolymer, a block copolymer, or a graft copolymer. However, it is preferably a block copolymer.

In the general formula (1), R ¹ represents a hydrocarbon group or a silicon-containing group. R ¹ is preferably a hydrocarbon group, more preferably an aliphatic hydrocarbon group, still more preferably an alkyl group, even more preferably an alkyl group having 1 to 3 carbon atoms, particularly preferably methyl. It is a base.
Y ¹ represents an oxygen atom, a sulfur atom or NR (N is a nitrogen atom and R represents a hydrogen atom or a hydrocarbon group). Y ¹ is preferably an oxygen atom.
When there are a plurality of R ^{1 s} and Y ^{1 s,} they may be the same or different, but are preferably the same.
Here, the hydrosilane compound (d1′) is preferably a compound represented by the following general formula (2).

In the general formula (2), R ¹ and Y ¹ are the same as those in the general formula (1).
R ^1b represents a hydrocarbon group, preferably an aliphatic hydrocarbon group, more preferably an alkyl group, still more preferably an alkyl group having 1 to 3 carbon atoms, and particularly preferably a methyl group. ..
Y ² represents an oxygen atom, a sulfur atom or NR (N is a nitrogen atom and R represents a hydrogen atom or a hydrocarbon group). Y ² is preferably an oxygen atom.
m is an integer of 1 to 20, preferably 1 to 6.
n is an integer of 0 to 20, preferably 0 or 1.
When n is 1 or more, Z represents a divalent linking group represented by the following general formula (4).
When n is 0, Z represents a divalent linking group represented by the following general formula (4) or a direct bond between Y ¹ and R ^1c .
R ^1a and R ^1c represent a hydrocarbon group or a group represented by the following general formula (3). The hydrocarbon group is preferably an aliphatic hydrocarbon group, more preferably an alkyl group, further preferably an alkyl group having 1 to 3 carbon atoms, and particularly preferably a methyl group. However, when n is 0, R ^1c may be a hydrogen atom. When there are a plurality of R ¹ , R ^1a , R ^1b , and R ^1c , these may be the same or different.
When a plurality of Y ¹ and Y ² are present, they may be the same or different, but it is preferable that they are all oxygen atoms.

In the general formula (3), R ²¹ represents a hydrocarbon group, preferably an aliphatic hydrocarbon group, more preferably an alkyl group, further preferably an alkyl group having 1 to 3 carbon atoms, A methyl group is particularly preferred. A plurality of R ^21's may be the same or different, but it is preferable that they are the same.
y is an integer of 1 to 100, preferably 1.

In the general formula (4), R ¹¹ represents a hydrocarbon group, preferably an aliphatic hydrocarbon group, more preferably an alkyl group, further preferably an alkyl group having 1 to 3 carbon atoms, A methyl group is particularly preferred.
A plurality of R ¹¹ may be the same or different, but it is preferable that they are the same.
l is an integer of 0-500.

Further, the hydrosilane compound (d1′) may have a structure represented by the following general formula (5).
In the general formula (5) below, l is the same as in the general formula (4).

The terminal double bond-containing polyolefin (d2′) is a terminal double bond-containing polyolefin containing one or more vinyl groups.
The terminal double bond-containing polyolefin (d2′) is selected from the group consisting of an ethylene homopolymer chain, a propylene homopolymer chain, or an olefin having 2 to 50 carbon atoms, except for the vinyl group of the terminal double bond containing polyolefin. It is preferably a copolymer chain of two or more olefins.
Among these, ethylene homopolymer chains, propylene homopolymer chains, or ethylene, propylene, butene, vinyl norbornene, cyclic polyene having two or more double bonds and chain polyene having two or more double bonds It is preferably a copolymer chain of two or more olefins selected from the group, and particularly ethylene homopolymer chain, propylene homopolymer chain, olefin and diene copolymer chain, ethylene and propylene copolymer chain, ethylene And a copolymer chain of norbornene is preferred.
The number average molecular weight of the terminal double bond-containing polyolefin (d2') is preferably 100 to 500,000.
The number average molecular weight (Mn) is a standard polystyrene conversion value measured by gel permeation chromatography (GPC) method.

As the silylated polyolefin (D), for example, a hydrosilane compound (d1′) and a terminal double bond-containing polyolefin (d2′) are described in, for example, JP 2010-37555 A and JP 2011-26448 A. In the presence of a transition metal catalyst composition prepared from the hydrosilane compound (d1′) and a transition metal halide.

The amount ratio of the hydrosilane compound (d1′) and the terminal double bond-containing polyolefin (d2′) varies depending on the structure of the silylated polyolefin (D) to be produced, but usually the terminal double bond-containing polyolefin (d2′). The equivalent ratio of the vinyl group in () to the Si-H bond in the hydrosilane compound (d1') is in the range of 0.01 to 10 equivalent times, preferably 0.1 to 2 equivalent times.

Specific examples of the silylated polyolefin (D) include olefin-silicone copolymers having a structure having a polyorganosiloxane block (silicone block) represented by the following general formulas (6) to (8). However, the silylated polyolefin (D) is not limited to these.
In the following general formulas (6) to (8), l and m are the same numerical values as l and m described in the general formulas (2) and (4). The value of 1 is preferably 5 to 200, and more preferably 10 to 100 from the viewpoint of improving the peelability of the pseudo adhesive label.
Further, p is an integer of 1 or more, preferably 100 to 100,000, and more preferably 200 to 10,000.
Further, in the following general formulas (6) to (8), two R ^{31 s} in the terminal double bond-containing polyolefin (d2′) each independently represent a hydrogen atom or a hydrocarbon group. R ³¹ is a residue of an olefin unit constituting a polyolefin. When the olefin is ethylene, both R ^31's are hydrogen atoms. When the olefin is propylene, two R ^31's are a combination of a hydrogen atom and a methyl group. When there are a plurality of p's, the value of each p may be the same or different.

[Olefin resin (X1)]
The olefin resin (X1) is a polymer mainly composed of a structural unit (x1) derived from an olefin monomer (x1′). However, the structural unit (d1) derived from the hydrosilane compound (d1′) (hereinafter, also referred to as “monomer (d1′)”) containing one or more of the above general formula (1) as a structural unit is not included.
Here, the “polymer mainly composed of the structural unit (x1) derived from the olefin monomer (x1′)” means that the structural unit most contained among the structural units contained in the olefin resin (X1) is an olefin. It means that it is a structural unit (x1) derived from a monomer (x1′).
As the olefin monomer (x1′), an olefin having 2 to 8 carbon atoms is preferable. Examples of the olefin having 2 to 8 carbon atoms include ethylene, propylene, butylene, isobutylene, 1-hexene and the like.
In one embodiment of the present invention, the olefin monomer (x1′) is more preferably an olefin having 2 to 4 carbon atoms, ethylene, propylene, or butylene, and is ethylene or propylene being an olefin having 2 to 3 carbon atoms. More preferably.
The olefin monomers (x1′) may be used alone or in combination of two or more to form a copolymer.

When specific examples of the olefin resin (X1), ultra low density polyethylene (VLDPE, density: 880 kg / ^{m 3} or more 910 kg / ^m less than ^3), low density polyethylene (LDPE, density: 910 kg / ^{m 3} or more 915 kg / m polypropylene; 942kg / ^{m 3} or higher), polyethylene resins such as linear polyethylene: ³ below), medium density polyethylene (MDPE, density: 915 kg / ^{m 3} or more 942kg / ^m less than ^3), high density polyethylene (HDPE, density (PP); polybutene resin (PB); ethylene-propylene copolymer; olefin elastomer (TPO); ethylene-vinyl acetate copolymer (EVA); ethylene-methyl methacrylate copolymer (EMMA); ethylene-propylene Olefinic terpolymers such as -(5-ethylidene-2-norbornene); and the like, and the like, preferably polyethylene resin, polypropylene resin (PP), polybutene resin (PB), more preferably polyethylene resin, It is a polypropylene resin (PP).
The olefin resin (X1) may be used alone or in combination of two or more.

The content of the structural unit (x1) in the olefin resin (X1) is preferably 50 to 100% by mass, more preferably 100% by mass based on the total structural units (100% by mass) of the olefin resin (X1). Is 60 to 100% by mass, more preferably 70 to 100% by mass, even more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass.

The content of the structural unit derived from the olefin having 2 to 4 carbon atoms in the olefin resin (X1) is preferably 50 to 100 mass with respect to all the structural units (100 mass%) of the olefin resin. %, more preferably 60 to 100% by mass, still more preferably 70 to 100% by mass, even more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass.

[Other additives]
In one aspect of the present invention, the resin composition (A) may contain an additive generally used in a resin film, as long as the effect of the present invention is not impaired.
Examples of such additives include antioxidants, lubricants, ultraviolet absorbers, colorants, and antiblocking agents.
For example, when the resin composition (A) contains a coloring agent such as carbon black within a range that does not impair the effects of the present invention, the first resin layer has a higher concealing property with respect to the description of the adherend. Can have
These additives may be used alone or in combination of two or more.
When the resin composition (A) contains these additives, each content of the additives is based on the total content (100 parts by mass) of the olefin resin (X1) and the silylated polyolefin (D). The amount is preferably 0.0001 to 20 parts by mass, more preferably 0.0005 to 15 parts by mass, and further preferably 0.001 to 10 parts by mass.

<Other layer (β)>
In the pseudo adhesive label of the present invention, the other layer (β) is a layer that is not selected as one layer (α) of the first resin layer and the second resin layer.
The other layer (β) is a layer formed from the resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component.
Here, the phrase “comprising the olefin resin (X2) as a main agent” means that among the components that can be contained in the resin composition (B), the component that is contained most is the olefin resin (X2). ..
The resin composition (B) forming the other layer (β) may contain a resin other than the olefin resin (X2) as long as the effect of the present invention is not impaired. Furthermore, if necessary, additives for resin films and the like may be included. However, it is preferable that the silylated polyolefin (D) is not included.
The content of the olefin resin (X2) in the resin composition (B) is preferably 50 to 100% by mass, more preferably 60% with respect to the total amount (100% by mass) of the resin composition (B). -100 to 100% by mass, more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass.
Hereinafter, each component contained in the resin composition (B) will be described.
In the following description, “content of each component relative to the total amount of active ingredients of the resin composition (B)” means “each component of the other layer (β) formed from the resin composition (B)”. It can also be regarded as "content".

[Olefin resin (X2)]
The olefin resin (X2) is a polymer mainly composed of the structural unit (x2) derived from the olefin monomer (x2′). However, the structural unit (d1) derived from the hydrosilane compound (d1′) (hereinafter, also referred to as “monomer (d1′)”) containing one or more of the above general formula (1) as a structural unit is not included.
Here, the "polymer mainly composed of the structural unit (x2) derived from the olefin monomer (x2')" means the structural unit that is contained most in the structural units that can be contained in the olefin resin (X2). It means that it is a structural unit (x2) derived from an olefin monomer (x2′).

In the pseudo adhesive label of the present invention, examples of the olefin resin (X2) include the same ones as the olefin resin (X1). However, the olefin resin (X1) and the olefin resin (X2) need to be different from each other.
In the present invention, "the olefin-based resin (X1) and the olefin-based resin (X2) are different from each other" means that the structural unit (x1) which is the main component of the olefin-based resin (X1) and the main component of the olefin-based resin (X2). It means that the structural unit (x2) is different.
That is, the structural unit (x1) that is contained most in the structural units that can be contained in the olefin resin (X1) and the structural unit (x2) that is contained most in the structural units that can be contained in the olefin resin (X2). And are different from each other.
Therefore, when the structural unit (x1) which is the main component of the olefin resin (X1) and the structural unit (x2) which is the main component of the olefin resin (X2) are the same, but the molecular weight and density are different. Does not correspond to the definition of “the olefin resin (X1) and the olefin resin (X2) are different from each other”.
For example, when one of the olefin-based resin (X1) and the olefin-based resin (X2) mainly contains a structural unit derived from ethylene and the other resin mainly contains a structural unit derived from propylene, (X1) and the olefin resin (X2) are different from each other."
However, when one of the olefin-based resin (X1) and the olefin-based resin (X2) is low-density polyethylene and the other resin is high-density polyethylene, “olefin-based resin (X1) and olefin-based resin” is used. (X2) are different from each other”.

The content of the structural unit (x2) in the olefin resin (X2) is preferably 50 to 100% by mass, more preferably 100% by mass based on the total structural units (100% by mass) of the olefin resin (X2). Is 60 to 100% by mass, more preferably 70 to 100% by mass, even more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass.

[Additive]
In one aspect of the present invention, the resin composition (B) contains an additive generally used in a resin film, in addition to the olefin resin (X2), within a range that does not impair the effects of the present invention. May be.
Examples of such additives include antioxidants, lubricants, ultraviolet absorbers, colorants, and antiblocking agents.
These additives may be used alone or in combination of two or more.
When the resin composition (B) contains these additives, the content of each additive is preferably 0.0001 to 20 parts by mass, and more preferably 100 parts by mass of the olefin resin (X2). The amount is 0.0005 to 15 parts by mass, more preferably 0.001 to 10 parts by mass.

<Adhesive layer>
The pressure-sensitive adhesive layer of the pseudo adhesive label of the present invention is a layer for attaching the pseudo adhesive label to an adherend and is appropriately selected according to the application of the pseudo adhesive label. Specifically, it is formed from an adhesive such as an acrylic adhesive, a natural rubber adhesive, a synthetic rubber adhesive, a silicone adhesive, etc. From the viewpoint of weather resistance and price, the acrylic adhesive is preferred. Used. Examples of the acrylic pressure-sensitive adhesive include a solvent-type acrylic pressure-sensitive adhesive and a water-based emulsion-type acrylic resin.

<Release sheet>
The release sheet included in the pseudo adhesive label of the present invention is not particularly limited, and a release sheet subjected to a single-side release treatment, a release sheet subjected to a double-side release treatment, or the like is used, and the release agent is applied onto the base material for the release sheet. The ones that have been made are listed.
Examples of the base material for the release sheet include high-quality paper, glassine paper, kraft paper, and other papers; polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, and other polyester resin films, polypropylene resin, polyethylene resin, and the like. Plastic films such as olefin resin films; and the like.
Examples of the release agent include rubber-based elastomers such as silicone-based resins, olefin-based resins, isoprene-based resins, and butadiene-based resins, long-chain alkyl-based resins, alkyd-based resins, and fluorine-based resins.

<Manufacturing method of pseudo adhesive label>
The pseudo adhesive label of the present invention is manufactured, for example, by the following steps (1) to (4).
Step (1): A resin composition (A) containing a silylated polyolefin (D) and an olefin resin (X1) other than the silylated polyolefin (D) as a main component is prepared.
Step (2): A resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component is prepared. However, the olefin resin (X1) and the olefin resin (X2) are different from each other.
Step (3): One of the resin composition (A) and the resin composition (B) is used as the first resin layer, and the other of the resin composition (A) and the resin composition (B) is used as the second resin. As a layer, a laminate is produced in which the first resin layer and the second resin layer are pseudo-bonded and the base material, the first resin layer and the second resin layer are laminated in this order.
Step (4): An adhesive layer and a release sheet are laminated in this order on the surface of the second resin layer opposite to the pseudo adhesive surface.

In the step (1), a resin composition (A) containing a silylated polyolefin (D) and an olefin resin (X1) other than the silylated polyolefin (D) as a main component is prepared.
In one aspect of the present invention, the olefin resin (X1) is preferably 50 to 99% by mass, more preferably 60 to 97% by mass, based on the total amount of the resin composition (A) (100% by mass). More preferably, the content is 65 to 95 mass %.
The silylated polyolefin (D) has a mixing mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) of preferably 1/99 or more, more preferably 3/97 or more, It is preferably 5/97 or more, more preferably 8/92 or more, still more preferably 10/90 or more, still more preferably 20/80 or more, still more preferably 30/70 or more. The mixing mass ratio (D/X1) is preferably 50/50 or less, more preferably 40/60 or less, and further preferably 35/65 or less.

In the step (2), a resin composition (B) containing the olefin resin (X2) as a main component is prepared.
In one aspect of the present invention, the olefin resin (X2) is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, based on the total amount (100 mass%) of the resin composition (B). It is more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, and still more preferably 90 to 100% by mass.

In the step (3), one of the resin composition (A) and the resin composition (B) is used as the first resin layer, and the other of the resin composition (A) and the resin composition (B) is used as the second resin layer. As the resin layer, a laminate in which the first resin layer and the second resin layer are pseudo-bonded and the base material, the first resin layer, and the second resin layer are laminated in this order is manufactured.
As a method for producing a laminate in which the first resin layer and the second resin layer are pseudo-bonded, and the base material, the first resin layer and the second resin layer are laminated in this order, A method of laminating a first resin layer and a second resin layer on the material one by one in this order (hereinafter, also referred to as “two-layer sequential lamination”), and a co-extrusion of the first resin layer and the second resin layer. A forming method (hereinafter, also referred to as “two-layer coextrusion”) and the like can be mentioned.

[Two layers sequentially stacked]
First, the first resin layer is laminated on the base material.
The method for laminating the first resin layer on the base material is not particularly limited, but for example, one of the resin composition (A) and the resin composition (B) is melted on the base material using a T die. A method of extruding may be used.
Here, the extrusion temperature at the time of forming the first resin layer is preferably 350° C. or lower, more preferably 325° C. or lower, from the viewpoint of improving the pseudo adhesion state of the first resin layer and the second resin layer. It is more preferably 300°C or lower, and even more preferably 290°C or lower. Moreover, the lower limit of the extrusion temperature at the time of forming the first resin layer is usually 200° C. or higher.
From the viewpoint of improving the adhesion between the base material and the first resin layer, it is preferable to laminate the first resin layer after corona treatment or the like of the base material.

Next, the second resin layer is laminated on the surface of the first resin layer opposite to the surface on the base material side so that the first resin layer and the second resin layer are pseudo-bonded.
As a method of pseudo-bonding the second resin layer to the surface opposite to the base material side surface of the first resin layer, for example, using a T die, the resin composition (A) and the resin composition (B) The other one (that is, if the resin composition (A) was used when forming the first resin layer, the resin composition (B) is used. Used when forming the first resin layer) If the resin composition (B) is used, the resin composition (A) is used.) A method of melt-extruding the resin composition (A) on the surface opposite to the surface of the first resin layer on the substrate side can be mentioned.
The extrusion temperature at the time of forming the second resin layer is preferably 350° C. or lower, more preferably 325° C. or lower, still more preferably 300° C. or lower, still more preferably 290° C. or lower, as in the case of forming the first resin layer. .. Moreover, the lower limit of the extrusion temperature at the time of forming the second resin layer is usually 200° C. or higher.

Here, conventionally, when both the resin composition (A) and the resin composition (B) are olefinic resins, even if they are different olefinic resins, the resin composition is melted during the formation of the second resin layer. If the extrusion temperature at the time of extrusion is set to a high temperature, there is a problem that the first resin layer and the second resin layer are melted and fixed to each other and the pseudo-adhesion state is not obtained.
To solve this conventional problem, in the pseudo adhesive label of the present invention, the resin composition (A) contains a silylated polyolefin (D) and contains an olefin resin (X1) other than the silylated polyolefin (D). The resin composition (B) contains an olefin resin (X2) other than the silylated polyolefin (D) as a main agent, and the olefin resin (X1) and the olefin resin (X2) are different from each other. Although both the composition (A) and the resin composition (B) have an olefin resin as a main component, the extrusion temperature of the resin composition is increased when the second resin layer is formed on the first resin layer. Productivity and workability can be improved.

From the viewpoint of improving the extrusion temperature, the mixing mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) in the resin composition (A) is preferably adjusted to 1/99 or more. To be done.
When D/X1 is 1/99 or more, even when the extrusion temperature of the resin composition is increased to high temperature when forming the second resin layer on the first resin layer, the first resin layer and the second resin layer are separated from each other. It will not melt and stick. Thereby, the extrusion temperature at the time of forming the second resin layer can be increased to improve productivity and processability.

[Coextrusion method]
In one aspect of the present invention, from the viewpoint of further improving the productivity of the pseudo adhesive label, it is preferable to simultaneously laminate the first resin layer and the second resin layer on the base material. Specifically, a method of melt coextruding the resin composition (A) and the resin composition (B) onto a substrate using a multi-layer T die, and the like can be mentioned.
From the viewpoint of making the pseudo adhesion state of the first resin layer and the second resin layer more favorable, the extrusion temperature is both the extrusion temperature at the time of forming the first resin layer and the extrusion temperature at the time of forming the second resin layer, It is preferably 350°C or lower, more preferably 325°C or lower, further preferably 300°C or lower, still more preferably 290°C or lower, and usually 200°C or higher.

From the viewpoint of improving the extrusion temperature, the mixing mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) in the resin composition (A) is preferably adjusted to 1/99 or more. To be done.
When D/X1 is 1/99 or more, the resin composition (A) and the resin composition (B) can be melted and solidified even when the extrusion temperature is high, only by using different main components from each other, while using both as a polyolefin resin. It is possible to pseudo-bond without wearing.
Here, from the viewpoint of further improving the extrusion temperature, the mixing mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) in the resin composition (A) is more preferably 3/97. The above is adjusted to 5/97 or more, more preferably 5/97 or more, still more preferably 8/92 or more, still more preferably 10/90 or more, still more preferably 20/80 or more, still more preferably 30/70 or more.
In particular, when D/X1 is 30/70 or more, even if the extrusion temperatures of the resin composition (A) and the resin composition (B) are set to 280° C. or more, respectively, the first resin layer and the second resin layer Can be pseudo-bonded.

In step (4), an adhesive layer and a release sheet are laminated in this order on the surface of the second resin layer opposite to the pseudo adhesive surface.
Specifically, a pressure-sensitive adhesive is applied to the release-treated surface of the release sheet to form a pressure-sensitive adhesive layer on the release sheet, and the pressure-sensitive adhesive layer formed on the release sheet is used as the second resin of the pseudo adhesive laminate. The pseudo-adhesive label can be manufactured by sticking the layer-side surface (the surface opposite to the pseudo-adhesive surface of the second resin layer with the first resin layer). Alternatively, a pressure-sensitive adhesive may be applied to the surface of the pseudo adhesive laminate on the second resin layer side by a conventional method to form a pressure-sensitive adhesive layer, and a release sheet may be attached to the pressure-sensitive adhesive layer.
From the viewpoint of improving the adhesiveness between the second resin layer side surface of the pseudo adhesive laminate and the pressure-sensitive adhesive layer, after the corona treatment or the like on the second resin layer side surface of the pseudo adhesive laminate, the adhesive It is preferable to form a layer.

The pseudo adhesive label may be appropriately punched. For the punching process, for example, the release sheet may be punched together using a punching blade along the outer contour of the predetermined label, or the release sheet may be cut from the base material to the adhesive layer so as not to punch the release sheet. You may form so that several pseudo adhesive labels may be arranged on it. Further, if necessary, unnecessary portions around the outer contour of each pseudo adhesive label may be removed as scraps from the release sheet.

<Use of pseudo adhesive label>
The pseudo adhesive label of the present invention is used, for example, as a delivery slip. Specifically, a half-cut line is put in the base material of the pseudo adhesive label, and the base material is separated into a plurality of pieces so that they can be peeled off. Then, one piece of the base material separated by the half cut line is used as a delivery slip, and another piece of the base material is used as a receipt slip. The receipt is usually stamped or signed by the recipient, then peeled off, brought back by the delivery company, and used for organizing slips.

The present invention will be specifically described by the following examples, but the present invention is not limited to the following examples. The physical property values in the following examples are values measured by the following methods.

<Measurement of thickness of each layer>
The thickness was measured using a constant pressure thickness meter manufactured by Teclock Co., Ltd. (model number: “PG-02J”, standard: JIS K6783, Z1702, Z1709 compliant).

<Resin composition>
Details of the resin composition carried out in the following production examples are shown below.
(Olefin resin)
-Polyethylene: Low-density polyethylene, manufactured by Nippon Polyethylene Co., Ltd., product name "LC8001"
-Polypropylene: Product name "OX-1067" manufactured by Nippon Polychem Co., Ltd.
(Silylated polyolefin)
-Silenylated polyolefin diluted product obtained by diluting polyethylene-silicone-polyethylene triblock copolymer, which is an olefin-silicone copolymer, with polyethylene (Mitsui Chemicals, Inc., trade name "EXFORA PE masterbatch", silylated polyolefin Content ratio: 30% by mass). In the following description, it is also referred to as "EXFORA PE masterbatch".
-Silenylated polyolefin diluted product of polypropylene-silicone-polypropylene triblock copolymer, which is an olefin-silicone copolymer, diluted with polypropylene (manufactured by Mitsui Chemicals, Inc., trade name "EXFORLA PP masterbatch", containing silylated polyolefin) Ratio: 30% by mass). In the following description, it is also referred to as "EXFORLA PP masterbatch".

(Compounding the resin composition of one layer (α) of the first resin layer and the second resin layer)
A silylated polyolefin diluted product (EXFORLA PE masterbatch) and polyethylene as an olefin resin are blended, and the content of the silylated polyolefin relative to the total amount (100% by mass) of the resin composition is from 1% by mass to 30% by mass. It was adjusted.
Similarly, a diluted silylated polyolefin (EXFORLA PP masterbatch) and polypropylene as an olefin resin are blended, and the silylated polyolefin content is 1% by mass relative to the total amount (100% by mass) of the resin composition. To 30% by mass.

[Examples 1-6, Examples 21-26, Comparative Examples 1-2]
Preparation of pseudo adhesive label sample (two-layer coextrusion) A base material, a first resin layer and a second resin layer were laminated in this order, and a first resin layer and a second resin layer were formed by coextrusion. A pseudo adhesive label sample was prepared by the following procedure.
After the thermosensitive coloring paper (manufactured by Nippon Paper Industries Co., Ltd., trade name “TP60KS-HS”, thickness: 75 μm) was fed out from the payout roll and subjected to corona treatment on the surface opposite to the thermosensitive coloring layer of the thermosensitive coloring paper. The resin composition (A) and the resin composition (B) in the combinations shown in Table 1 below are melted and co-extruded in two layers from a T-die, and the resin composition (A) is applied to the corona-treated surface of the thermosensitive coloring paper. A three-layer laminate was obtained in which the formed first resin layer and the second resin layer formed from the resin composition (B) were laminated in this order. Then, the surface of the second resin layer opposite to the first resin layer side was subjected to corona treatment.
The extrusion temperatures of the first resin layer and the second resin layer were as shown in Table 1 below. Further, the cooling roll temperature at the time of two-layer coextrusion in the T die was 25° C., and the pressure roll pressure was 0.03 MPa. The processing speed was 60 m/min.
The thickness of each of the first resin layer and the second resin layer was 15 μm.
Subsequently, an acrylic adhesive (manufactured by Lintec Co., Ltd., product name “SG”) is applied to the release agent layer side of the glassine paper-based release sheet (manufactured by Lintec Co., Ltd., product name “8K Ao”) after drying. A pressure-sensitive adhesive layer is formed on a release sheet by applying and drying at 100° C. for 2 minutes so that the thickness becomes 20 μm, and the surface of this pressure-sensitive adhesive layer and the second resin layer side of the above three-layer laminate are bonded together. A pressure-sensitive adhesive sheet was prepared by using this as a pseudo-adhesive label sample (two-layer coextrusion).

[Examples 7 to 20, Examples 27 to 40, Comparative Examples 3 to 4]
Preparation of Pseudo-Adhesive Label Sample (Two Layers Sequentially Laminated) A pseudo-adhesive label sample in which the first resin layer and the second resin layer were sequentially laminated one by one on the base material was produced by the following procedure.
After the thermosensitive coloring paper (manufactured by Nippon Paper Industries Co., Ltd., trade name “TP60KS-HS”, thickness: 75 μm) was fed out from the payout roll and subjected to corona treatment on the surface opposite to the thermosensitive coloring layer of the thermosensitive coloring paper. The resin composition (A) shown in Table 1 below is melted and extruded from a T-die, and the first resin layer formed from the resin composition (A) is laminated on the corona-treated surface of the thermosensitive color developing paper. A layer stack was prepared.
Then, the two-layer laminate was once wound into a roll and delivered from a delivery roll by melting the resin composition (B) shown in Table 1 below on the surface of the two-layer laminate on the first resin layer side. A first resin layer formed from the resin composition (A) and a second resin layer formed from the resin composition (B) are laminated in this order on a corona-treated surface of a thermosensitive coloring paper extruded from a T-die. A three-layer laminate was obtained. Then, the surface of the second resin layer opposite to the first resin layer side was subjected to corona treatment.
The extrusion temperature of the first resin layer and the extrusion temperature of the second resin layer were as shown in Table 1 below. The temperature of the cooling roll at the time of extrusion in the T die was 25° C., and the pressure of the pressure roll was 0.03 MPa. The processing speed was 60 m/min.
The thickness of each of the first resin layer and the second resin layer was 15 μm.
Then, similarly to the pseudo-adhesive label sample (coextrusion), a pressure-sensitive adhesive layer was formed on the release sheet, and the surface of this pressure-sensitive adhesive layer and the second resin layer side of the above three-layer laminate were bonded together. An adhesive sheet was prepared and used as a pseudo adhesive label sample (two layers sequentially laminated).

<Evaluation of pseudo adhesion>
(Ease of peeling)
A pseudo adhesive label sample cut into a width of 5 cm and a length of 15 cm is peeled off at room temperature (23° C.) using a tensile tester at a peeling angle of 180° and a peeling speed of 0.3 m/min. Then, it was evaluated whether or not the first resin layer and the second resin layer could be separated from the interlayer A.
The evaluation criteria are as follows.
The evaluation A was obtained by peeling between the first resin layer and the second resin layer, and no peeling damage was confirmed on the peeled surface of any of the resin layers.
The evaluation B was made by peeling between the first resin layer and the second resin layer, but a slight peeling damage was confirmed on the peeling surface of at least one of the resin layers.
Although the peeling was possible between the first resin layer and the second resin layer, the peeling damage on the peeling surface of the resin layer was confirmed, or the crease damage appeared on the base material was evaluated as C.
Evaluation D was a test in which the first resin layer and the second resin layer were stuck together and could not be peeled off.
(Peeling resistance during processing)
The sample of the pseudo-adhesive label cut into a square was folded at 180° at room temperature (23° C.) with a line connecting 5 mm on both sides from the apex at one corner of the sheet-shaped sample.
After the folding back, the case where peeling did not occur between the first resin layer and the second resin layer was evaluated as ◯.
The case where peeling occurred between the first resin layer and the second resin layer after folding back was evaluated as ×.
(Reattachment resistance)
A pseudo adhesive label cut into a square of 14 cm in length and width was used as a sample, and was peeled off at the interface between the first resin layer and the second resin layer at room temperature (23° C.). Then, the peeled first resin surface and the second resin layer surface were overlapped and pressure-bonded at 5 MPa for 10 minutes by a heating press machine set at 50°C.
The case where the interface between the first resin layer and the second resin layer did not adhere was evaluated as ◯, and the case where the adhered state was confirmed instantly was evaluated as x.

The evaluation results are shown in Table 1.

The following can be seen from Table 1.
From Comparative Examples 1 to 4 in Table 1, when both the resin composition (A) and the resin composition (B) are olefin resins, even if these olefin resins are different from each other, the resin composition It can be seen that even if the extrusion temperature of the product (A) and the resin composition (B) is 200° C., which is a relatively low temperature, the first resin layer and the second resin layer are fixed to each other and pseudo adhesion does not occur.

On the other hand, from Examples 7 to 13 and Examples 27 to 33 in Table 1, the resin composition (A) is an olefin resin, and the resin composition (B) is an olefin resin and a silylated polyolefin (olefin- When the olefin resin in the resin composition (A) and the olefin resin in the resin composition (B) are different from each other, the silylated polyolefin in the resin composition (B) is a mixture of a silicone copolymer). The resin composition (A) and the resin composition (B) are extruded at a temperature of 200° C. or higher and the first resin layer and the second resin layer are sequentially laminated to form a first resin layer. It can be seen that the second resin layer can be pseudo-bonded.
Particularly, when the silylated polyolefin is contained in an amount of 1% by mass or more based on the total amount of the resin composition (B), the extrusion temperatures of the resin composition (A) and the resin composition (B) are increased to 290° C. and 280° C., respectively. Even in this case, it is understood that the first resin layer and the second resin layer can be pseudo-bonded by sequentially laminating the first resin layer and the second resin layer.
The resin composition (A) is a mixture of an olefin resin and a silylated polyolefin (olefin-silicone copolymer), the resin composition (B) is an olefin resin, and the olefin resin in the resin composition (A) is Even when the resin and the olefin resin in the resin composition (B) are different from each other, the same as above can be seen from Examples 14 to 20 and Examples 34 to 40 in Table 1.

Further, from Examples 1 to 3 and Examples 21 to 23 in Table 1, the resin composition (A) is an olefin resin, and the resin composition (B) is an olefin resin and a silylated polyolefin (olefin-silicone When the olefin resin in the resin composition (A) and the olefin resin in the resin composition (B) are different from each other, the silylated polyolefin in the resin composition (B) is contained in the resin composition (B). It can be seen that the first resin layer and the second resin layer can be pseudo-bonded by coextrusion with the extrusion temperature of the resin composition (A) and the resin composition (B) set to 200° C., regardless of the amounts.
Further, when the silylated polyolefin is contained in an amount of 30% by mass or more based on the total amount of the resin composition (B), the extrusion temperatures of the resin composition (A) and the resin composition (B) are increased to 290° C. and 280° C., respectively. Even in this case, it is understood that the first resin layer and the second resin layer can be pseudo-bonded by coextrusion.
The resin composition (A) is an olefin resin and a silylated polyolefin (olefin-silicone copolymer), the resin composition (B) is an olefin resin, and the olefin resin in the resin composition (A) is Even when the olefin-based resins in the resin composition (B) are different from each other, Examples 4 to 6 and Examples 24 to 26 in Table 1 show the same as above.

Further, since the pseudo adhesive label samples of Examples 1 to 40 all had good peel resistance during processing, a step of producing a pseudo adhesive label from a laminate of the first resin layer and the second resin layer, or In the process of performing post-processing such as printing or punching on the pseudo adhesive label, there is no peeling between the first resin layer and the second resin layer between the layers A, and the pseudo adhesive label is manufactured, printed or punching. It was found that it is easy to perform post-processing such as.

The pseudo adhesive label of the present invention can be used, for example, as a delivery slip.

DESCRIPTION OF SYMBOLS 1... Pseudo adhesive label 11... Base material 12... First resin layer 13... Second resin layer 14... Adhesive layer 15... Release sheet A... Interlayer 21 between first resin layer and second resin layer... Separation base material 22 ... Remaining part on adherend

Claims (9)

The base material, the first resin layer, the second resin layer, the pressure-sensitive adhesive layer, and the release sheet are laminated in this order, and the first resin layer and the second resin layer are pseudo-bonded,
One of the first resin layer and the second resin layer (α) contains a silylated polyolefin (D), and contains an olefin resin (X1) other than the silylated polyolefin (D) as a main agent. A layer formed from the resin composition (A) containing
The other layer (β) of the first resin layer and the second resin layer was formed from a resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component. Layers,
A pseudo adhesive label in which the olefin resin (X1) and the olefin resin (X2) are different from each other. The pseudo adhesive label according to claim 1, wherein the content of the olefin resin (X1) is 50% by mass or more based on the total amount of the resin composition (A). The pseudo adhesive label according to claim 1 or 2, wherein the mixture mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is 1/99 or more. The pseudo adhesive label according to any one of claims 1 to 3, wherein the content of the olefin resin (X2) is 50% by mass or more based on the total amount of the resin composition (B). One of the olefin resin (X1) and the olefin resin (X2) has a structural unit derived from ethylene, and the other resin has a structural unit derived from propylene. Pseudo adhesive label described. The content of the structural unit derived from ethylene is 50% by mass or more based on all the structural units of the one resin,
The pseudo adhesive label according to claim 5, wherein the content of the structural unit derived from propylene is 50% by mass or more based on all the structural units of the other resin. It is a manufacturing method of the pseudo adhesive label as described in any one of Claims 1-6, Comprising: The manufacturing method of a pseudo adhesive label including the following processes (1)-(4).
Step (1): A resin composition (A) containing a silylated polyolefin (D) and an olefin resin (X1) other than the silylated polyolefin (D) is prepared.
Step (2): A resin composition (B) containing an olefin resin (X2) other than the silylated polyolefin (D) as a main component is prepared. However, the olefin resin (X1) and the olefin resin (X2) are different from each other.
Step (3): One of the resin composition (A) and the resin composition (B) is used as the first resin layer, and the other of the resin composition (A) and the resin composition (B) is used as the second resin. As the layer, a laminate in which the first resin layer and the second resin layer are pseudo-bonded to each other, and the base material, the first resin layer, and the second resin layer are laminated in this order. Create.
Step (4): An adhesive layer and a release sheet are laminated in this order on the surface of the second resin layer opposite to the pseudo adhesive surface. In the step (1), the mixture mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is adjusted to 1/99 or more,
The pseudo according to claim 7, wherein in the step (3), the first resin layer and the second resin layer are laminated on a base material by coextrusion at an extrusion temperature of 200° C. or higher to produce the laminate. Adhesive label manufacturing method. In the step (1), the mixed mass ratio (D/X1) of the silylated polyolefin (D) and the olefin resin (X1) is adjusted to 30/70 or more,
The pseudo according to claim 7, wherein in the step (3), the first resin layer and the second resin layer are laminated on a substrate by coextrusion at an extrusion temperature of 280° C. or higher to produce the laminate. Adhesive label manufacturing method.