JP2008225282A - Label base manufacturing method, and partially adhesive label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label base manufacturing method with which a portion having a masking layer arranged thereon is scarcely stuck to an object for sticking the label thereto, in the label base having the masking layer formed on a surface of an adhesive layer. <P>SOLUTION: The method for manufacturing the label base 10 which has a base material 4, an adhesive layer 5 arranged on a surface of the base material 4, and the masking layer 3 arranged on at least a portion of a surface of the adhesive layer 5 to conceal the adhesive strength of the adhesive layer 5, has: a process to apply a masking forming material to a release surface of a release paper 2, and to form the masking layer 3 on at least a portion of the release surface; and a process to stick the surface of the adhesive layer 5 arranged on the base material 4 and the release surface including the masking layer 3 to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for producing a label base material provided with a masking layer in order to conceal the adhesive force of an adhesive provided on the base material, and a partial pressure-sensitive adhesive label.

There are products that wrap various items such as confectionery, cosmetics, and medicines in packaging boxes. Various labels are affixed to the product.
Among the labels, a label that is affixed to an object to be pasted such as a product with a part protruding mainly for advertising purposes (this type of label is also referred to as a POP label. Hereinafter, abbreviated as a POP label. (Patent Document 1).
This POP label is generally formed of a flexible sheet having a predetermined shape, and has a sticking portion that can be stuck mainly to a product and a protruding portion that cannot be stuck to the product. The protruding portion of the POP label is provided with a pressure-sensitive adhesive layer on the label substrate, and masking is performed by applying a mask forming material such as ultraviolet curable ink on the surface of the pressure-sensitive adhesive layer corresponding to the protruding portion. By providing the layer, the adhesive force of the adhesive is concealed ([0016] in Patent Document 1).

Conventionally, in order to partially form a masking layer on the surface of the pressure-sensitive adhesive layer, the following method has been performed.
Step 1: A pressure-sensitive adhesive is provided in a solid form on the entire release surface of the release paper, and a base material is bonded to the surface of the pressure-sensitive adhesive layer to transfer the pressure-sensitive adhesive to the base material.
Step 2: After peeling the adhesive layer together with the base material from the release paper, a mask forming material (for example, an ultraviolet curable ink) is applied to a predetermined area on the surface of the adhesive layer transferred to the base material using a letterpress printing plate. Apply.
Step 3: Then, after forming the masking layer by irradiating ultraviolet rays to cure the ink coating film, the portion where the masking layer is not formed (that is, the region where the surface of the adhesive layer is exposed) The base material is again bonded to the release paper.
The label base material temporarily stuck on the release paper can be manufactured through these steps 1 to 3. Various labels such as POP labels can be obtained by cutting the label substrate into an appropriate shape.

However, in the above conventional method, the adhesive force of the adhesive cannot be sufficiently concealed through the masking layer, and the label portion (protruding portion in the case of the POP label) that is desired to be non-adhered to the product is May stick to. If this label portion is stuck on a product, the advertising effect of the label is not exhibited, and improvement is demanded.
JP 2006-213376 A

The present inventors have intensively studied the reason why the masking layer formed by the above-described conventional method cannot sufficiently conceal the adhesive force. As a result, the mask forming material is directly applied to the surface of the adhesive layer peeled from the release paper. I found out that it was caused by coating.
Specifically, in the above conventional method, the mask forming material is directly applied to the surface of the pressure-sensitive adhesive layer, but when the relief printing plate that applies the masking forming material is separated from the surface of the pressure-sensitive adhesive layer, The pressure-sensitive adhesive is attracted, and as a result, a part of the pressure-sensitive adhesive is exposed from the masking layer, or a very thin portion is formed in a part of the masking layer. For this reason, the adhesive force of the adhesive acts on the surface of the masking layer, and the portion adheres to the adherend despite the formation of the masking layer.
Moreover, the release paper is generally inferior in surface smoothness because it is made of paper. When an adhesive is applied to the release surface of the release paper and this adhesive is transferred to the substrate, the surface of the adhesive layer transferred to the substrate corresponds to the fine irregularities on the surface of the release paper. It becomes uneven. In the conventional method, since the mask forming material is applied to the surface of the uneven pressure-sensitive adhesive layer, the coating film of the forming material tends to vary in thickness. Therefore, a very thin part is generated in a part of the masking layer, and the adhesive force of the adhesive acts on the surface of the masking layer as described above.

Therefore, the present invention improves the concealment of the adhesive strength of the pressure-sensitive adhesive in the label base material in which the masking layer is formed on the surface of the pressure-sensitive adhesive layer, and the portion provided with the masking layer is adhered to the adherend. It is an object of the present invention to provide a method for producing a label substrate that is difficult to perform.
Moreover, this invention makes it a subject to provide the partial adhesive label in which the part in which the masking layer was provided is hard to stick to a to-be-adhered body.

  The present invention includes a base material, a pressure-sensitive adhesive layer provided on one surface of the base material, and a masking layer provided on at least a part of the surface of the pressure-sensitive adhesive layer in order to conceal the adhesive force of the pressure-sensitive adhesive layer. A method for producing a label substrate, comprising: applying a mask forming material to a release surface of a release paper, and forming a masking layer on at least a part of the release surface; an adhesive provided on the substrate Bonding the surface of the layer onto the release surface including the masking layer.

In the above production method, a masking layer is formed on a release surface of a release paper, and then a pressure-sensitive adhesive layer provided on a substrate is bonded to the surface of the masking layer. Thus, if a masking layer is formed on the release surface of the release paper, a masking layer with small thickness variation can be formed. And the masking layer excellent in thickness uniformity can be transferred to the surface of an adhesive layer by pasting together on the surface of this masking layer to the surface of the adhesive layer previously provided in the base material. In the obtained label base material, a very thin portion is formed in a part of the masking layer, or the pressure-sensitive adhesive is not exposed from a part of the masking layer. Therefore, according to the manufacturing method of this invention, the label base material with which the adhesive force of the adhesive was concealed with the masking layer can be obtained. Such a label base material can be used as a partial pressure-sensitive adhesive label in which a portion provided with a masking layer is non-adhered by cutting it into a desired shape.
Moreover, since the label base material obtained by the manufacturing method of the present invention is pseudo-adhered to the release paper as a whole, it prevents the label base material from being inadvertently swung or peeled off from the release paper. it can.

  In addition, a preferable manufacturing method of the present invention uses a release paper having a plurality of recesses formed on the release surface, and forms a masking layer by applying a mask forming material to the release surface including the recesses. It is.

According to the preferable manufacturing method, the projecting portion corresponding to the concave portion of the release surface is formed on the surface of the masking layer laminated on the release surface. Therefore, when the label substrate is peeled off from the release paper, the exposed surface of the masking layer transferred to the label substrate (the surface laminated on the release surface, that is, the surface opposite to the surface adhered to the adhesive layer) is protruding. It becomes an uneven shape having a portion.
Thus, since the exposed surface of the masking layer is formed in a concavo-convex shape, the exposed surface of the masking layer has an area that contacts the adherend as small as possible. For this reason, it can prevent that the part in which the masking layer was provided adheres to a to-be-adhered body.

Furthermore, another means of the present invention is to provide a partially pressure-sensitive adhesive label. The partially pressure-sensitive adhesive label of the present invention is provided with a pressure-sensitive adhesive layer on one side of a label substrate, and is formed on a part of the surface of the pressure-sensitive adhesive layer. A masking layer for concealing the adhesive force of the adhesive is provided, and a plurality of protrusions are formed on the exposed surface of the masking layer (the surface opposite to the adhesive layer).
In such a partial pressure-sensitive adhesive label, the exposed surface of the masking layer is formed in an uneven shape, so that the area in contact with the adherend becomes as small as possible. For this reason, it can prevent that the part in which the masking layer was provided adheres to a to-be-adhered body.

The manufacturing method of the label base material which concerns on this invention can manufacture the label base material which concealed the adhesive force of the adhesive with the masking layer.
If such a label base material is used, it is possible to form a label in which the portion provided with the masking layer is difficult to stick to the adherend.
Furthermore, since the label base material obtained by the production method of the present invention is unlikely to be inadvertently peeled or twisted from the release paper, it is excellent in handleability.
The partial pressure-sensitive adhesive label according to the present invention is less likely to stick to the part to be pasted with the masking layer, and is therefore suitable as a POP label, for example.

The manufacturing method of the label base material in the present embodiment preferably includes the following steps A to D.
Process A: The process of preparing the release paper in which the recessed part was formed in the mold release surface.
Process B: The process of coating a mask forming material on the mold release surface of the said release paper, and forming a masking layer.
Process C: The process of preparing the base material with which the adhesive was provided in the one surface.
Process D: The process of bonding the surface of the adhesive layer of the said base material to the said release paper.
Hereinafter, the present invention will be specifically described with reference to the drawings. However, in each figure, the label substrate represents one that can cut out one partial adhesive label in the width direction, but the manufacturing method of the present invention has a plurality of partial adhesive labels in the width direction. It can also be applied to wide label substrates that can be cut out. In actual mechanical production, the production method of the present invention is often applied to a wide label substrate such as the latter.

(Process A)
Step A is a step of preparing a release paper 2 in which a recess 22 is formed on a release surface 21 as shown in FIG.
The release paper 2 is a sheet material on which a release surface 21 is formed by performing a peeling process on at least one surface. Conventionally known release paper 2 can be used. As the release paper 2, a long sheet material is usually used. The long sheet material is supplied in a state of being wound in a roll shape, and is drawn out from the roll body to form a recess 22.
The material of the sheet material is not particularly limited, and examples thereof include paper, synthetic paper, synthetic resin film, and laminates thereof. A release surface 21 is formed by performing a release treatment on the surface of the sheet material. As the release treatment, for example, a coating liquid containing a release agent such as a silicone resin (for example, an ultraviolet curable ink containing silicone), an additive capable of improving releasability such as a wax, a lubricant, or a silicone oil is mixed. Examples thereof include a method of coating a release coating solution, a release coating solution containing fine particles, and the like on the surface of the sheet material.

A plurality of recesses 22 are provided on the release surface 21. The release surface 21 of the release paper 2 provided with the recess 22 is formed in an uneven shape having a protrusion 23 between the plurality of recesses 22.
Although the formation method of the recessed part 22 is not specifically limited, Usually, it is a simple method to form the recessed part 22 by embossing. When embossing is performed, an embossing roll (not shown) may be pressed from the release surface 21 of the long release paper 2 that is sequentially fed in the longitudinal direction, or from the surface opposite to the release surface 21. You may press an embossing roll.
The planar view shape of the recess 22 is not particularly limited, and may be a substantially rectangular shape, a substantially triangular shape, or the like, as shown in FIG. Moreover, the recessed part 22 may be formed in the planar view belt | band | zone shape which the recessed shape adjacent to the width direction of the release paper 2 was connected continuously, as shown to Fig.2 (a), and the recessed part 22 is FIG. As shown to (b), you may form in planar view mesh shape.

  The recess 22 is formed on the whole or a part of the release surface 21 of the release paper 2. As will be described later, the concave portion 22 is formed on the release paper 2 for the purpose of forming a protruding portion on the masking layer, and therefore the concave portion 22 is preferably formed in a region where the masking layer is to be formed. . In other words, it is preferable not to form the concave portion 22 on the release surface 21 corresponding to the surface of the pressure-sensitive adhesive layer not covered with the masking layer. When the recess 22 is provided over the entire release surface 21, when the surface of the pressure-sensitive adhesive layer not covered with the masking layer is temporarily attached to the release surface 21 of the release paper 2, it corresponds to the surface of the pressure-sensitive adhesive layer. This is because the recess 22 is also present on the release surface 21 and the adhesive force of the adhesive layer to the release paper 2 is weakened.

The height (depth) of the concave portion 22 is not particularly limited and is appropriately set according to the strength and thickness of the release paper 2. However, if the concave portion 22 is too shallow, a good protruding portion can be formed in the masking layer. On the other hand, if the depth is too deep, the masking material may not reach the bottom surface of the recess 22, or the protrusion may be damaged when the masking layer is peeled off from the release surface 21. Considering this point, the height of the concave portion 22 is preferably about 0.5 μm to 5 μm, more preferably about 1 μm to 2 μm.
Moreover, although the area which the recessed part 22 occupies is set suitably, Preferably a recessed part occupation rate is 5%-50%, More preferably, it is 10%-30%. The recess occupancy ratio is obtained by [(total of bottom areas of each recess occupying a predetermined area of the release paper / predetermined area of the release paper) × 100], and the predetermined area is the area where the recess 22 is formed. The total area.

(Process B)
Step B is a step of forming a masking layer 3 by applying a masking forming material 31 to the release surface 21 of the release paper 2 as shown in FIG.
As shown in FIG. 3A, a mask forming material 31 is applied to the release surface 21 in which the concave portion 22 is formed.
The mask forming material 31 is a material for forming the masking layer 3 that conceals the adhesive force of the adhesive.
The mask forming material 31 is applied to a predetermined range (a region where the masking layer 3 is to be formed) of the release surface 21 including the recess 22.
The mask forming material 31 is not particularly limited as long as it is a liquid that can be applied substantially uniformly to the release surface 21 and can form a coating film. For example, a solvent type or emulsion type containing a synthetic resin as a main component. Various printing inks such as a resin solution, an ionizing radiation curable resin solution, and an ultraviolet curable ink can be used. Among these, it is preferable to use an ultraviolet curable ink as the masking material 31 because it can be applied by various printing methods and is easily cured.
The masking material 31 is applied to the release surface 21 of the release paper 2 via, for example, a relief printing plate 32. The coating method of the masking material 31 is not limited to the printing method, and may be a coating method using a coater or the like.
Among these, the coating method of the mask forming material 31 is preferably applied by a letterpress rotary printing machine from the viewpoint that it can be applied to the release surface 21 with a certain thickness and the mask forming material 31 can easily enter the recess 22. In this case, it is preferable to use a masking material 31 (printing ink) prepared to about 5000 mPa · s to 30000 mPa · s.
The viscosity is measured at 25 ° C. with a Brookfield viscometer.

The coating thickness of the masking material 31 is not particularly limited, but is applied in a relatively thick shape so as not to cause fine irregularities on the surface of the coating film (surface opposite to the release surface). It is preferable to work. For example, the coating thickness of the masking material 31 is preferably about 0.5 μm to 5 μm at the portion of the release surface 21 with respect to the convex portion 23.
Moreover, it is preferable that the coating film of the masking material 31 has a uniform surface (surface opposite to the release surface 21). For example, the surface of the coating film exists on the release surface 21. Compared with the unevenness, the unevenness is not substantially generated. By forming the coating film in this way, the pressure-sensitive adhesive layer uniformly adheres to the surface of the masking layer when the pressure-sensitive adhesive layer is bonded to the surface of the masking layer as will be described later. Therefore, when the masking layer is peeled off from the release surface 21, the masking layer can be prevented from being divided or cracked.

After forming a coating film using the masking forming material 31, the coating film is cured to form the masking layer 3 on the release surface 21 (FIG. 3B).
The curing means for the coating film may be irradiated with predetermined ultraviolet rays when ultraviolet curable ink is used, and is a drying treatment when a solvent type or emulsion type resin solution is used.
By performing this process B, the release paper 2 in which the masking layer 3 is laminated on the release surface 21 can be formed.

(Process C)
Step C is a step of preparing a base material 4 provided with an adhesive on one surface as shown in FIG.
The base material 4 is a main member constituting the label base material, and an appropriate material can be selected and used according to the type of label. As the base material 4, a long sheet material is usually used in the same manner as the release paper 2. The long sheet material is usually supplied by being wound in a roll shape in a state of being temporarily stuck on a release paper via an adhesive.
Examples of the substrate 4 include paper, synthetic paper, synthetic resin film, and laminates thereof.
As the adhesive provided on one surface of the substrate 4, an adhesive generally called a pressure-sensitive adhesive is used. The pressure-sensitive adhesive can be peeled from the adherend by hand and has an adhesive force that can be reapplied to the adherend. As the pressure-sensitive adhesive, known ones such as acrylic, rubber and urethane can be used.

The pressure-sensitive adhesive is laminated on the entire surface of the substrate 4. Usually, the base material 4 which has such an adhesive can be obtained as follows, for example.
As shown in FIG. 4, the release paper 2 ′ (however, this release paper 2 ′ is a separate release paper from the release paper 2 on which the masking layer 3 is formed in the steps A and B). After the adhesive is applied to the entire surface, the base material 4 is bonded from above the adhesive layer 5. And if the base material 4 is peeled from the release paper 2 ′, the pressure-sensitive adhesive layer 5 is transferred from the release surface of the release paper 2 ′ to the base material 4, and as a result, the above-mentioned base material on which the pressure-sensitive adhesive layer 5 is laminated. 4 can be obtained.

  In addition, the process A-process C is not restricted to what is implemented in the order of process A, B, C, It can carry out in arbitrary orders. For example, after the process C, the processes A and B may be performed, or the process C may be performed in parallel with the process A or the process B.

(Process D)
Step D is a step of bonding the surface of the pressure-sensitive adhesive layer 5 of the substrate 4 to the release surface 21 of the release paper 2 as shown in FIG.
The pressure-sensitive adhesive layer 5 of the base material 4 prepared in the step C is bonded to the release surface 21 of the release paper 2 on which the masking layer 3 obtained in the step B is formed. Specifically, the pressure-sensitive adhesive layer 5 of the substrate 4 is formed on both the portion of the release paper 2 provided with the masking layer 3 and the exposed portion of the release surface 21 (portion where the masking layer 3 is not provided). It is pasted so as to straddle.
The masking layer 3 formed on the release paper 2 is bonded to the surface of the pressure-sensitive adhesive layer 5 of the substrate 4 by the bonding. Since the masking layer 3 adheres more strongly to the pressure-sensitive adhesive layer 5 than the release surface 21 of the release paper 2, when the substrate 4 is peeled from the release paper 2, the masking layer 3 bonded to the pressure-sensitive adhesive layer 5 is It transfers to the adhesive layer 5 and peels from the release paper 2 together with the base material 4.
As described above, the long label base material 10 in which the adhesive strength of the pressure-sensitive adhesive layer 5 provided on the base material 4 is partially concealed by the masking layer 3 can be obtained.

The long label substrate 10 is usually wound up in a roll shape in a state of being temporarily attached to the release paper 2 and is stored and supplied.
Individual labels can be produced by punching the label substrate 10 into a desired shape.
For example, as shown in FIG. 6, the partially adhesive label 1 can be formed by punching the label base material 10 so as to include a portion having the masking layer 3 and a portion not having the masking layer 3. The partial pressure-sensitive adhesive label 1 can be used as a so-called POP label. A portion having the masking layer 3 becomes a protruding portion of the partial pressure-sensitive adhesive label 1, and a portion not having the masking layer 3 becomes a sticking portion of the partial pressure-sensitive adhesive label 1. In FIG. 6A, the punching line 11 is represented by a one-dot chain line. However, the partial pressure-sensitive adhesive label 1 is not limited to the case of being punched into the shape shown in the figure, and is designed as appropriate.

  Moreover, when forming the label 1 from the long label base material 10 temporarily attached to the release paper 2 as described above, the release paper 2 is not normally punched, as shown in FIG. Each layer (base material 4, adhesive layer 5 and masking layer 3) excluding the release paper 2 is divided in the thickness direction according to the punching line 11. By removing the substrate part (part other than the label) on the outside of the punching line 11 from the release paper, a label continuous body in which a plurality of partial pressure-sensitive adhesive labels 1 are temporarily attached side by side on the release paper 2 is obtained. Obtainable.

The label continuum is loaded into a labeler.
The labeler is an apparatus that peels the partial adhesive label 1 from the release paper 2 and adheres the surface portion where the adhesive layer 5 is exposed to an adherend such as a product.
As shown in FIG. 7, the partial pressure-sensitive adhesive label 1 peeled from the release paper 2 has a surface 1a from which the pressure-sensitive adhesive layer 5 is exposed and a surface 1b from which the masking layer 3 is exposed. A protruding portion 3 a corresponding to the concave portion 22 of the release surface 21 is formed on the exposed surface 1 b where the masking layer 3 is exposed.
The protruding portion 3a has a protruding portion occupation rate of 5% to 50% on the exposed surface 1b of the masking layer 3.

As shown in FIG. 8A, the partial pressure-sensitive adhesive label 1 is affixed to the front surface 12a of the adherend 12 with the surface 1a from which the pressure-sensitive adhesive layer 5 is exposed (hereinafter, sometimes referred to as a sticking part 1a). The exposed surface 1b from which the masking layer 3 is exposed (hereinafter may be referred to as a protruding portion 1b) is attached so as to protrude from the upper surface 12b of the adherend 12.
A plurality of adherends 12 to which the partial adhesive labels 1 are attached are packed in, for example, a packing box and are stored and distributed. At this time, the protruding portion 1b of the partial adhesive label 1 is pressed against the packaging box, the partial adhesive label 1 is bent, and the exposed surface 1b of the masking layer 3 is the upper surface 12b of the adherend 12 as shown in FIG. It will be in the state contact | abutted. In the label substrate 10 obtained by the production method of the present invention, the adhesive force of the pressure-sensitive adhesive layer 5 is surely concealed by the masking layer 3, so that the exposed surface 1b of the masking layer 3 is the adherend 12 as described above. Even if it contacts, there is no possibility that this part will adhere partially to the adherend 12. For this reason, when the adherend 12 to which the label 1 is attached is taken out from the packaging box, the bent label 1 is restored to the state in which the protruding portion 1b protrudes from the adherend 12 according to the restoring force of the substrate 4. Yes.
In particular, in the process A of the above manufacturing method, the masking layer 31 is formed by applying the masking forming material 31 to the release surface 21 including the recess 22 to form the masking layer 3, so that the protrusion 3 a corresponding to the recess 22 is masked. It can be formed on the exposed surface 1 b of the layer 3. The exposed surface 1b of the masking layer 3 having the protruding portions 3a has as small an area as possible to contact the adherend 12. Therefore, it is possible to reliably prevent the exposed surface 1b of the masking layer 3 from adhering to the adherend 12.
Moreover, according to the manufacturing method of the present invention, since the protrusion 3a can be formed only on the masking layer 3 without forming irregularities on the substrate, the irregularities do not appear on the surface of the substrate 4, and the partial adhesive label 1 is also preferable in appearance.

Moreover, according to the manufacturing method of the label base material 10 of this invention, when forming the masking layer 3 on the surface of the adhesive layer 5 laminated | stacked on the base material 4, after providing the masking layer 3 in the release paper 2 side, Since the base material 4 is bonded together, the label base material 10 that is difficult to peel off from the release paper 2 can be manufactured.
Specifically, in the conventional label base material production method, the base material on which the pressure-sensitive adhesive layer is laminated is once peeled off from the release paper, a masking layer is formed, and then it is temporarily attached on the release paper again. . Thus, when the masking layer is already formed on the label base material, the surface of the masking layer does not adhere to the release paper even if the label base material is temporarily attached to the release paper again. Therefore, the label base material is in a state in which the portion where the masking layer is formed is peeled off from the release paper, so that the portion is inadvertently wound, and the label base material is inferior in handleability.
In this respect, the label base material 10 according to the present invention is produced by a procedure in which the masking layer 3 is formed on the release surface 21 of the release paper 2 and the surface of the adhesive layer 5 of the base material 4 is bonded thereto. Is called. The obtained label substrate 10 is temporarily attached to the release paper 2. When the masking layer 3 is thus formed on the release paper, the masking layer 3 is pseudo-adhered to the release surface 21 of the release paper 2 (adhered with an adhesive force that does not naturally cause delamination). Therefore, the obtained label substrate 10 does not inadvertently peel off from the release paper 2 and is therefore excellent in handleability.

  Moreover, if the masking layer 3 is formed on the release paper 2 as in the production method of the present invention, the masking layer 3 having excellent uniformity with small thickness variation can be formed. And by sticking together on the surface of this masking layer 3 on the surface of the adhesive layer 5 previously provided in the base material 4, the masking layer 3 of the predetermined thickness excellent in thickness uniformity is attached to the surface of the adhesive layer 5. It can be transferred to the surface. In the obtained label substrate 10, a very thin portion is generated in a part of the masking layer 3, or the pressure-sensitive adhesive is not exposed from a part of the masking layer 3. Therefore, according to the manufacturing method of the present invention, it is possible to obtain the label substrate 10 in which the adhesive force of the adhesive is reliably hidden by the masking layer 3.

Note that the present invention is not limited to the method exemplified in the above-described embodiment, and can be appropriately modified within the range intended by the present invention.
For example, in the above embodiment, in the process A, the release paper 2 in which the recess 22 is formed on the release surface 21 is used, but this release paper 2 in which the recess 22 is not formed is used. The masking material 31 may be applied to the surface 21 to form the masking layer 3.
In this case, the protruding portion 3a is not formed on the exposed surface 1b of the masking layer 3 transferred to the base material 4, but the masking layer 3 excellent in thickness uniformity can be transferred to the pressure-sensitive adhesive layer 5, This is the same as the above embodiment in that the label base material 10 in which the adhesive strength of the adhesive is reliably concealed can be obtained.

Moreover, in the said embodiment, although the case where the release paper 2 in process A and the release paper 2 'in process C used separate things was manufactured, the label base material 10 is manufactured using the same release paper. You can also
Specifically, first, as described in the above step C, an adhesive is applied to the release surface 21 of the release paper 2, and the base material 4 is bonded to the adhesive layer 5 to form the adhesive layer 5. To be transferred. Next, the pressure-sensitive adhesive layer 5 is peeled off together with the base material 4, and a recess 22 is formed on the release surface 21 of the remaining release paper 2 in the same manner as in the above step A (however, as in the above modification, the recess In the case of using a release paper that does not have this, the step of forming the recesses is omitted.) Next, after the masking layer 3 is formed on the release surface 21, the peeling is performed on the surface of the masking layer 3. The surfaces of the pressure-sensitive adhesive layer 5 of the substrate 4 are bonded together. With this method, the use of release paper can be reduced by one as compared with the above embodiment.

  Moreover, the partial adhesive label 1 using the label base material 10 of this invention is not limited to the use as what is called a POP label, It can be used as a label of various uses.

(A) is a partially omitted plan view showing step A of the label substrate manufacturing method, and (b) is a cross-sectional view taken along the line II. The partially abbreviated top view which shows the modification of the recessed part formed in the release paper. However, the portion where the recess is formed is shown by shading. (A) is a side view including a partial cross section showing process B of the label base material manufacturing method, and (b) is a plan view of the same part omitted. However, in FIG. 5B, the portion where the masking layer is formed is shown in light ink (the same applies to FIGS. 5B and 6A). (A) is a side view including a partial cross section showing process C of the label substrate manufacturing method. (A) is a side view including a partial cross section showing process D of the label base material manufacturing method, and (b) is a plan view with the same part omitted. (A) is a partially omitted plan view showing process D of the label base material manufacturing method, and (b) is a cross-sectional view taken along the line II-II. Sectional drawing of the label formed from the label base material. (A) is a side view including a partial cross section showing a state in which a partially adhesive label is attached to an adherend, and (b) is a side view including a partial cross section illustrating a state in which the protruding portion of the label is bent. .

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Partial adhesive label, 1a ... Adhesive part of label, 1b ... Non-adhesive part of label, 2 ... Release paper, 21 ... Release surface of release paper, 22 ... Concave part of release paper, 23 ... Convex part of release paper, DESCRIPTION OF SYMBOLS 3 ... Masking layer, 3a ... Projection part of masking layer, 4 ... Base material, 5 ... Adhesive layer, 10 ... Label base material, 12 ... To-be-adhered body

Claims (3)

A label base material comprising: a base material; an adhesive layer provided on one surface of the base material; and a masking layer provided on at least a part of the surface of the adhesive layer in order to conceal the adhesive force of the adhesive layer. A manufacturing method of
Applying a mask forming material to the release surface of the release paper to form a masking layer on at least a part of the release surface;
Bonding the surface of the pressure-sensitive adhesive layer provided on the substrate onto the release surface including the masking layer;
A method for producing a label base material, comprising:   The label base material according to claim 1, wherein a release paper having a plurality of recesses formed on the release surface is used, and a masking layer is formed on the release surface including the recesses by applying a masking material. Method.   A pressure-sensitive adhesive layer is provided on one surface of the label base material, and a masking layer for concealing the adhesive strength of the pressure-sensitive adhesive is provided on a part of the surface of the pressure-sensitive adhesive layer. A partially adhesive label, characterized in that a protrusion is formed.

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