JP2015230438A - Pseudo adhesive label and method for producing pseudo adhesive label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an occurrence of curl when peeling a surface substrate while suppressing unintentional separation of the surface substrate.SOLUTION: A pseudo adhesive label 10 includes a surface substrate 11, a resin layer 12, an intermediate base material 13, an adhesive layer 14, and release sheet 15 laminated in this order and laminated to have pseudo adhesion between the resin layer 12 and the intermediate base material 13. The resin layer 12 is partially provided; the pseudo adhesive label 10 also includes a non-adhesion part 21 in which the resin layer 12 is not provided between the surface substrate 11 and the intermediate base material 13.

Description

  The present invention relates to a pseudo-adhesive label, and more particularly to a pseudo-adhesive label that can be printed by a thermal printer or the like and can be used as a delivery slip or the like.

  Conventionally, a surface base material, a thermoplastic resin layer, an intermediate base material, an adhesive layer, and a release sheet are laminated in this order, and the thermoplastic resin layer and the intermediate base material are laminated so as to have pseudo-adhesiveness. A pseudo-adhesive label is known (see, for example, Patent Document 1). This pseudo-adhesive label is used after the release sheet is peeled off and affixed to an adherend with an adhesive layer. In the label affixed to the adherend, the surface base material is manually moved from the intermediate base material together with the thermoplastic resin layer. Can be easily peeled off. In addition, various information is generally printed on the surface base material, and thermal paper may be used.

  In recent years, pseudo-adhesive labels have been put to practical use as delivery slips. For pseudo-adhesive labels used as delivery slips, half-cut lines are placed on the surface substrate, and the surface substrate is separated into multiple pieces. In general, those that can be peeled off. In this pseudo-adhesive label, for example, a piece of surface base material separated by a half-cut line is used as a delivery slip, and another piece of surface base material is used as a receipt slip. The receipt slip is usually peeled off after being stamped or signed, taken home by a delivery company, and used for slip arrangement and the like. As described above, in the delivery slip, the surface base material is used by separating it into a delivery slip and a receipt slip, and therefore, the same delivery information such as the client, delivery destination, and delivery name may be printed on both of them. It is desired.

Utility Model Registration No. 3178208

  By the way, the peeling force of the pseudo-adhesive label must be strong to some extent so that an unintended receipt slippage does not occur during delivery. However, if the peel strength is strong, it may take time to create a trigger to peel off the receipt. In addition, there is a problem that the peeled receipt slip is curled and becomes bulky and difficult to take home, or the receipt slip is difficult to read.

  For this reason, in the pseudo-adhesive label, in order to peel the surface substrate together with the resin layer with good workability, it has been attempted to improve the peeling performance by improving the hot melt adhesive or the like that forms the resin layer. Yes. However, the improvement of the peeling performance is limited only by the improvement of the hot melt adhesive.

  The present invention has been made in view of the above problems, and prevents the unintended receipt slip (surface base material) from peeling while the peeled receipt slip (surface base material) does not cause a problem due to curling. It is an object to provide an adhesive label.

As a result of intensive studies, the present inventors have partially provided a resin layer disposed between the intermediate base material and the surface base material, and have no resin layer between the surface base material and the intermediate base material. It was found that the above-mentioned problems can be solved by forming the present invention, and the following present invention was completed. That is, the present invention provides the following (1) to (12).
(1) A surface base material, a resin layer, an intermediate base material, an adhesive layer, and a release sheet are laminated in this order, and are laminated so as to have pseudo adhesion between the resin layer and the intermediate base material. ,
The pseudoadhesive label which the said resin layer is provided in part and has an unadhered part without the said resin layer between the said surface base material and the said intermediate base material.
(2) The pseudo-adhesive label according to (1), wherein the resin layer is provided in at least a part of an outer peripheral region between the surface base material and the intermediate base material and has the unbonded portion in an inner region.
(3) The pseudo-adhesive label according to (1) or (2), wherein the unadhered portion is provided at a position corresponding to at least a part of an outer edge portion of the surface base material.
(4) The pseudo-adhesive label according to (3), wherein the pseudo-adhesive label has at least the unadhered portion at a position corresponding to a corner section defined on two sides of the surface base material.
(5) The pseudoadhesive label according to any one of (1) to (4), wherein the resin layer is formed from a hot melt adhesive containing a thermoplastic resin.
(6) The pseudoadhesive label according to any one of (1) to (5), wherein the surface base material has heat-sensitive color development.
(7) The pseudoadhesive label according to any one of (1) to (6), wherein the intermediate base material has heat-sensitive color development.
(8) Both the surface base material and the intermediate base material have heat-sensitive color development, and the same information can be printed on the surface base material and the intermediate base material from the surface on the surface base material side (1) ) -Pseudoadhesive label according to any one of (7).
(9) The pseudo adhesive label according to any one of (1) to (8), which is used as a delivery slip label.
(10) The pseudo-adhesive label is to be peeled and removed from the release sheet, and then adhered to a delivery article via the pressure-sensitive adhesive layer, and the surface base material is combined with the resin layer from the intermediate base material. The pseudo-adhesive label according to (9), which is used as a receipt that is peeled off and brought back.
(11) The above (1), wherein the peeling force at the location where the resin layer between the resin layer and the intermediate substrate is provided is 300 to 2000 mN / 50 mm at a peeling angle of 180 ° and a peeling speed of 0.3 m / min. -The pseudoadhesive label in any one of (10).
(12) A pseudo-adhesive label manufacturing method for manufacturing the pseudo-adhesive label according to any one of (1) to (11) above,
A coating step of partially applying a heated hot melt adhesive on the surface substrate, and cooling the applied hot melt adhesive, and adding the intermediate group to the cooled hot melt adhesive A method for producing a pseudo-adhesive label comprising a bonding step of bonding materials.

  In the present invention, by providing an unadhered portion having no resin layer between the surface base material and the intermediate base material, the peeling force as a label of the pseudo-adhesive label itself can be reduced, and the separated surface base material is curled. It becomes difficult to do. Moreover, since it is not necessary to forcefully reduce the peeling force between the intermediate substrate and the resin layer, unintentional peeling of the surface substrate can be prevented.

It is typical sectional drawing which shows the pseudo-adhesive label of this invention. In 1st Embodiment, it is a top view which shows an example of the resin layer laminated | stacked on the surface base material. In 1st Embodiment, it is a top view which shows the other example of the resin layer laminated | stacked on the surface base material. In 2nd Embodiment, it is a top view which shows an example of the resin layer laminated | stacked on the surface base material. In 2nd Embodiment, it is a top view which shows the other example of the resin layer laminated | stacked on the surface base material. In 2nd Embodiment, it is a top view which shows the other example of the resin layer laminated | stacked on the surface base material. In 2nd Embodiment, it is a top view which shows the other example of the resin layer laminated | stacked on the surface base material. It is a schematic diagram which shows an example of a pseudo-adhesive label manufacturing apparatus. It is typical sectional drawing which shows the process in which a pseudo adhesion label is manufactured.

Hereinafter, the present invention will be described in detail using embodiments.
[First embodiment]
First, a first embodiment of the present invention will be described.
As shown in FIG. 1, the pseudo-adhesive label 10 according to the first embodiment of the present invention includes a surface base material 11, a resin layer 12, an intermediate base material 13, an adhesive layer 14, and a release sheet 15 laminated in this order. The resin layer 12 and the intermediate substrate 13 are laminated so as to have pseudo-adhesiveness. In the first embodiment, a pseudo-adhesive label in which both the surface base material 11 and the intermediate base material 13 are heat-sensitive color developing properties will be described.
Note that the pseudo-adhesive property refers to a property that peeling is easy at the interface between two stacked layers, and after peeling, it cannot be easily re-adhered between the peeled layers. Hereinafter, each member will be described in more detail.

[Surface substrate and intermediate substrate]
Since the surface base material 11 and the intermediate base material 13 have heat-sensitive color development properties, the surface base material 11 and the intermediate base material 13 can be printed by a thermal printer or the like.
It is preferable that the surface base material 11 and the intermediate base material 13 having the heat-sensitive color developing property are those in which a heat-sensitive color forming layer is provided on one surface of the base material. It is provided on the surface opposite to the surface on the 12 side. Further, in the intermediate substrate 13, the thermosensitive coloring layer is provided on the surface of the intermediate substrate 13 on the resin layer 12 side.

That is, the thermosensitive coloring layers in the surface base material 11 and the intermediate base material 13 are arranged on the surface side (upper side in FIG. 1) of the pseudo adhesive label 10, respectively. Therefore, since both the surface base material 11 and the intermediate base material 13 are heat-sensitive color developing properties, the same information can be printed simultaneously on the receipt and delivery slips easily by one-time printing from the surface of the surface base material 11. It becomes possible.
Further, as will be described later, usually, a heated hot melt adhesive is laminated on the surface base material 11 to form the resin layer 12. At this time, the hot melt adhesive is directly applied to the surface of the surface base 11 opposite to the thermosensitive coloring layer, whereby the surface base 11 and the resin layer 12 are firmly bonded. On the other hand, the intermediate substrate 13 is laminated on the heat-sensitive color developing layer side of the resin layer 12 with a delay from the surface substrate 11. Due to this time difference, the adhesiveness of the hot melt adhesive is lowered, and pseudo-adhesiveness is generated between the intermediate substrate 13 and the resin layer 12. In addition, the thermosensitive coloring layer of the surface base material 11 and the intermediate base material 13 can prevent color development by appropriately arranging the unbonded portion 21 described later and controlling the temperature of the coating apparatus.

As the thermosensitive coloring layer provided on the surface substrate 11 and the intermediate substrate 13, a conventionally known thermosensitive coloring layer that is colored by heating can be used. For example, a leuco dye and a developer that reacts with the leuco dye are used. The thing to contain is mentioned. For example, the heat-sensitive color-developing layer is prepared by applying a coating liquid containing a binder, wax, solvent, etc., in addition to the above leuco dye and developer, on one surface of each of the surface base material 11 and the intermediate base material 13. It is formed by coating.
Moreover, as a base material used for the surface base material 11 and the intermediate base material 13, paper base materials, such as a craft paper, a quality paper, a glassine paper, a parchment paper, a rayon paper, a coated paper, a synthetic fiber paper, polyester-type resin , Resin films such as polyvinyl chloride resins, polyvinylidene chloride resins, polyolefin resins, and synthetic paper made of these resin films are used. From the viewpoint of improving printability and the residual heat of the resin layer From the viewpoint of making it difficult to transfer heat to the thermosensitive coloring layer provided on the surface of the surface substrate 11, it is preferably a paper substrate.

The thickness of the surface substrate 11 is preferably 10 to 100 μm. By setting the thickness of the surface base material 11 to 100 μm or less, the intermediate base material 13 can be printed with excellent printability by printing from the surface side of the surface base material 11. In addition, by setting the thickness to 10 μm or more, even if a heated hot melt adhesive is applied to the surface base material 11, the remaining heat is not easily transmitted to the heat-sensitive color forming layer of the surface base material, and the heat-sensitive color forming layer is not easily colored. . From these viewpoints, the thickness of the surface base material 11 is more preferably 15 to 80 μm, and further preferably 20 to 70 μm.
The thickness of the intermediate substrate 13 is not particularly limited, but is preferably 10 to 200 μm, and more preferably 15 to 150 μm.

[Resin layer]
As shown in FIG. 1, the resin layer 12 is partially provided between the surface base material 11 and the intermediate base material 13. Therefore, there is no resin layer 12 between the surface base material 11 and the intermediate base material 13, and an unbonded portion 21 in which the surface base material 11 and the intermediate base material 13 are not bonded via the resin layer 12 is formed.
Here, the resin layer 12 is provided in at least a part of the outer peripheral region in the region between the surface base material 11 and the intermediate base material 13 and is not provided in the inner region (inner region) of the outer peripheral region. The pseudo-adhesive label 10 has an unbonded portion in the inner region.
Therefore, in this embodiment, when printing is performed by a thermal printer at a position corresponding to the inner region from the surface base material 11 side, heating by the thermal printer does not pass through the resin layer 12 from the surface base material 11 to the intermediate base material. Since heat is directly transferred to the intermediate member 13, the intermediate base material 13 is likely to develop color.
Moreover, since the surface base material 11 is adhered to the intermediate base material 13 by the resin layer 12 having a small area, the surface base material 11 is locally adhered to the intermediate base material 13 relatively firmly by the resin layer 12. That is, the surface base material 11 is unlikely to be unexpectedly peeled off from the intermediate base material 13. Moreover, since the peeling force with respect to the intermediate base material 13 of the whole surface base material 11 becomes comparatively low by providing an unbonded part partially, the surface base material 11 becomes easy to peel off, and the surface base material 11 after peeling (Receipt) is less likely to curl.
The outer peripheral region is a region that extends from the outer edge side of the surface base material 11 toward the central portion so as to surround the central portion of the surface base material 11 between the surface base material 11 and the intermediate base material 13. The inner region is a region surrounded by the outer peripheral region and including the central portion.

More specifically, the resin layer 12 is composed of two rectangular elongated portions 12A and 12B. The elongated portions 12A and 12B are respectively opposed two sides 11A and 11B constituting the outer edge portion of the surface base material 11, respectively. It is preferable to be provided along 11B. In addition, the outer edge part of the surface base material 11 is a part which forms the outline of the main surface of the surface base material 11, for example, when the surface base material 11 is a rectangle as shown in FIG. 11D is the outer edge.
For example, as shown in FIG. 2, when the pseudo-adhesive label 10 is a rectangle such as a rectangle or a rectangle, the resin layer 12 is provided in an outer peripheral region along the two opposite sides 11 </ b> A and 11 </ b> B of the surface base material 11. On the other hand, it is preferable not to be provided in the outer peripheral region along the remaining two sides 11C and 11D. Thus, if the resin layer 12 is comprised from two elongate parts, since application | coating of the resin layer 12 will become easy, manufacture of the pseudoadhesive label 10 will become easy. In addition, each elongate part 12A, 12B may be parallel to MD direction, and may be parallel to TD direction.
However, the resin layer 12 does not need to be composed of two elongated portions, and may be provided along the entire circumference of the outer edge portion of the surface base material 11, for example. In this case, as shown in FIG. 3, when the label 10 is a quadrangle, the resin layer 12 is provided along the four sides 11 </ b> A to 11 </ b> D constituting the outer edge portion of the surface base material 11. Become.

  The width of the resin layer provided in the outer peripheral region is preferably 5 mm or more, more preferably 5 to 30 mm, and further preferably 10 to 30 mm. Adhesive area can be ensured by setting it as 5 mm or more, and it is prevented that the surface base material 11 peels off unexpectedly. Moreover, by setting it as 30 mm or less, the area | region in which the resin layer 12 is not provided becomes large, and the area which can improve printability becomes wide.

The resin layer 12 is preferably formed from a hot melt adhesive containing a thermoplastic resin.
The thermoplastic resin is preferably a polyolefin resin, and specific examples of the polyolefin resin include polyethylene, polypropylene, propylene / ethylene copolymer, propylene / ethylene / butene copolymer, and ethylene / vinyl acetate copolymer. And an ethylene / α-olefin copolymer which is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms, or a mixture thereof.
In this invention, it becomes easy to express appropriate pseudo-adhesiveness by using polyolefin resin for the resin layer 12. FIG. Moreover, since it is insoluble in water, for example, when used as a delivery slip, even if it is exposed to rain for a long time, it is prevented that the pseudo adhesiveness is lost.
Preferred examples of the polyolefin resin used for the resin layer 12 include a propylene / ethylene copolymer, a propylene / ethylene / butene copolymer, an ethylene / vinyl acetate copolymer, or a mixture thereof. A propylene / ethylene copolymer is more preferable. A preferable example includes a propylene / ethylene copolymer as a main component and the addition of the ethylene / α-olefin copolymer. In this case, the ethylene / α-olefin copolymer is preferably an ethylene / 1-octene copolymer.
When the above-mentioned resins are used for the hot melt adhesive, the melt viscosity decreases even at low temperatures, and it becomes possible to apply the hot melt adhesive at a relatively low temperature, and the heat sensitivity caused by the heating of the hot melt adhesive during label production It becomes easy to prevent color development of the color developing layer. Moreover, it becomes easy to make the pseudo adhesiveness between the resin layer 12 and the intermediate base material 13 excellent.
In the hot melt adhesive, the polyolefin resin is preferably a main component and is not particularly limited, but is usually 50% by mass or more, preferably 70% by mass or more, based on the total amount of the hot melt adhesive. Preferably, 85% by mass or more is contained.

The hot melt adhesive may contain acid-modified polyolefin, solid paraffin, or the like in addition to the above-described polyolefin resin.
Examples of the acid-modified polyolefin include maleic anhydride-modified polypropylene, and specific examples thereof include a polypropylene resin whose molecular terminal is modified with maleic anhydride, or a polypropylene resin graft-modified with maleic anhydride. The acid-modified polyolefin is preferably contained in an amount of 2 to 40% by mass, more preferably 5 to 30% by mass, based on the total amount of the hot melt adhesive. When the hot-melt adhesive contains an acid-modified polyolefin such as maleic anhydride-modified polypropylene, it becomes easy to make it have a high tack property at a relatively low heating temperature at which the thermosensitive coloring layer does not develop color. Therefore, it becomes easy to obtain stable pseudo-adhesiveness without coloring the surface base material and the intermediate base material.

Further, the hot melt adhesive contains solid paraffin wax, and exhibits a stable peeling force at the interface between the resin layer 12 and the intermediate substrate 13 even when the bonding temperature with the intermediate substrate 13 is changed. Good pseudo-adhesiveness can be secured under the bonding conditions in a wide temperature range. The solid paraffin wax is CAS No. 8002-74-2 solid paraffin, and the melting point thereof is preferably 90 to 130 ° C, more preferably 100 to 125 ° C. Moreover, a hot melt adhesive makes it easy to ensure the peeling force which shows suitable pseudo-adhesiveness by the low bonding temperature which the base materials 11 and 13 do not color by making melting | fusing point of solid paraffin 130 degrees C or less.
Solid paraffin wax is preferably used when the polyolefin resin is a propylene / ethylene copolymer. At that time, the melting point of the solid paraffin wax is preferably higher than that of the propylene / ethylene copolymer.
The solid paraffin is preferably contained in an amount of 1 to 20% by mass and more preferably 3 to 15% by mass with respect to the total amount of the hot melt adhesive.

  In addition, hot melt adhesives contain various additives such as antioxidants, ultraviolet absorbers, light stabilizers, flexibility imparting agents, flame retardants, antistatic agents, lubricants, fillers, and colorants as necessary. You may contain.

  Moreover, it is preferable that the softening point of a hot-melt-adhesive is 90-150 degreeC. When the hot melt adhesive has a softening point of 90 ° C. or higher, the resin layer 12 is prevented from being softened even in summer and the adhesive stability is improved. Moreover, a coating temperature can be lowered | hung by setting it as 150 degrees C or less, and it becomes easy to suppress the coloring of the base materials 11 and 13 at the time of label manufacture. From these viewpoints, the softening point is more preferably 100 to 150 ° C.

  The melt viscosity at 160 ° C. of the hot melt adhesive composition is preferably 2000 to 13000 mPa · s. By setting the melt viscosity to 2000 mPa · s or more, dripping or the like is less likely to occur when the hot melt adhesive is applied using a hot melt coater. Moreover, by setting it as 13000 mPa * s or less, it becomes possible to apply a hot-melt-adhesive on the surface base material 11 at the low temperature which the surface base material 11 does not color. From these viewpoints, the melt viscosity is more preferably 4000 to 12000 mPa · s.

As described above, the resin layer 12 is laminated so as to have pseudo adhesion to the intermediate base material 13, and the resin layer 12 and the intermediate base material 13 are peeled to such an extent that they can be easily peeled off. It is in close contact with force. Specifically, the peeling force at the location where the resin layer between the resin layer 12 and the intermediate substrate 13 is provided is preferably 300 to 2000 mN / 50 mm. In addition, the measuring method of this peeling force is as the Example mentioned later. When the peeling force is 300 mN / 50 mm or more, the laminate of the surface base material 11 and the resin layer 12 is prevented from being unexpectedly peeled off from the intermediate base material 13. Moreover, it becomes possible to peel the said laminated body smoothly with comparatively small peeling resistance as it is 2000 mN / 50mm or less. From these viewpoints, the peeling force is more preferably 500 to 1500 mN / 50 mm.
On the other hand, the resin layer 12 and the surface base material 11 are bonded more firmly than the peeling force between the resin layer 12 and the intermediate base material 13. Therefore, in the state in which the release sheet 15 is peeled off and the pseudo-adhesive label 10 is attached to the adherend with the pressure-sensitive adhesive layer 14, when the surface base material 11 side is peeled off manually, the surface base material 11 becomes the resin layer 12. At the same time, it is peeled off from the intermediate substrate 13.
Although the thickness of the resin layer 12 is not specifically limited, For example, it is 5-40 micrometers, Preferably it is 10-30 micrometers.

[Adhesive layer]
The pressure-sensitive adhesive layer 14 is a layer for bonding the pseudo adhesive label 10 to an adherend. The pressure-sensitive adhesive layer 14 is formed from a conventionally known pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive, a natural rubber-based pressure-sensitive adhesive, a synthetic rubber-based pressure-sensitive adhesive, or a silicone-based pressure-sensitive adhesive. An agent is preferably used. Although the thickness of the adhesive layer 13 is not specifically limited, For example, 5-50 micrometers, Preferably it is 10-40 micrometers.

[Peeling sheet]
As the release sheet 15, a conventionally known sheet can be used without particular limitation. For example, polyester films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyolefin films such as polyethylene, polypropylene, polymethylpentene, paper base materials such as clay coated paper, glassine paper, recycled paper, etc. A laminate paper or the like on which a thermoplastic resin such as polyethylene is laminated is used as a release substrate, and one surface of the release substrate is subjected to a release treatment with a release treatment agent. Examples of the release treatment agent include silicone resins, long-chain alkyl resins, fluorine resins, etc., but silicone resins are preferable from the viewpoint of cost and releasability. Although the thickness of the peeling sheet 15 is not specifically limited, For example, it is 20-200 micrometers, Preferably it is 40-100 micrometers.

  The pseudo adhesive label 10 is preferably stamped. In the punching process, after the surface base material 11, the resin layer 12, the intermediate base material 13, and the pressure-sensitive adhesive layer 14 are punched and cut from the surface base material 11 side, unnecessary portions are removed from the release sheet 15 by scraping. Therefore, as shown in FIG. 1, the surface base material 11, the resin layer 12, the intermediate base material 13, and the pressure-sensitive adhesive layer 14, which are slightly smaller than the release sheet 15, are laminated on the release sheet 15. The surface base material 11 is formed with the outline (outer edge portion) of the surface base material 11 by the punching process.

  Further, the pseudo adhesive label 10 may be provided with a half cut line. The half cut line is obtained by cutting the surface base material 11 and the resin layer 12 so as not to cut the intermediate base material 13. The half cut line may be formed in a perforated shape, or may be formed by a continuous single slit or the like. When the half-cut line is provided, the surface base material 11 is cut along the half-cut line together with the resin layer 12, and can be separated and separated as a plurality of pieces of sheets.

The pseudo adhesive label 10 is used as a delivery slip label, for example. For example, the pseudo-adhesive label 10 is one that is peeled and removed from the release sheet 15 and then adhered to the delivery article via the pressure-sensitive adhesive layer 14. For example, the surface base material 11 is used as a receipt, The material 13 is used as a delivery slip. That is, when delivery is completed, the surface base material 11 is peeled off from the intermediate base material 13 together with the resin layer 12 after stamping or signing, and used as a receipt to be brought back to the delivery company. On the other hand, the intermediate base material 12 side is a delivery slip left at the delivery destination.
The same information can be printed on the surface base material 11 and the intermediate base material 13 by one-time printing by a thermal printer. Therefore, even after the surface base material 11 (receipt slip) is peeled off, the same information as the receipt slip can be left on the delivery slip. Moreover, in the pseudo-adhesive label 10 of the present invention, since the delivery slip and the receipt slip on which the same information is printed are arranged in an overlapping manner, the label size can be reduced, and it can be used for small delivery items. Become. The information printed on the surface base material 11 and the intermediate base material 13 includes delivery information such as a client, a delivery destination, and a delivery item name.

As described above, the pseudo-adhesive label of the present embodiment has the resin layer 12 partially provided and has an unadhered portion, so that the peeling operability is improved, and the receipt slip after separation is difficult to curl.
In the above description, an example in which both the surface base material 11 and the intermediate base material 13 have heat-sensitive color developability has been described. However, at least one of the surface base material 11 and the intermediate base material 13 is heat-sensitive color developability. It may be a thing which does not have.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
In the present embodiment, as described in the first embodiment, the resin layer 12 is provided in at least a part of the outer peripheral region and is not provided in the inner region, but the inner region becomes an unbonded portion. Outside the resin layer 12 disposed in the region, there is a portion where the resin layer 12 is not provided (unbonded portion), and an unbonded portion is also provided at a position corresponding to at least a part of the outer edge portion of the surface substrate. It is done. Hereinafter, differences of the second embodiment from the first embodiment will be described. Note that, in this embodiment, portions that are not described are the same as those in the first embodiment.
For example, in the present embodiment, when the two elongated portions 12A and 12B formed by the resin layer are provided along the two opposite sides 11A and 11B, two when viewed from the center of the surface substrate 11 An unbonded portion (outer unbonded portion 21A) is further provided at a position corresponding to the outer edge portion of the surface base material 11 on the outer side of one elongated portion 12A of the elongated portions 12A, 12B. For example, as illustrated in FIG. 4, the outer unbonded portion 21 </ b> A preferably extends in an elongated shape corresponding to one side 11 </ b> A of the outer edge portion of the surface base material 11. It is more preferable that all the positions corresponding to the one side 11A of the outer edge portion are unbonded portions.
Thus, when the position corresponding to one side 11A of the surface base material 11 becomes an unbonded portion, the surface base material 11 can be easily peeled from the one side 11A. Further, when the non-adhered portion is formed in an elongated shape along one side of the surface base material 11, the resin layer 12 can be formed in a rectangular elongated shape, so that the resin layer 12 can be easily formed.
In the configuration of FIG. 4 and the configuration of FIG. 2 described above, the positions corresponding to the two sides 11C and 11D where the resin layer 12 is not provided are also unbonded portions, but the corners at both ends of these two sides 11C and 11D. Since the resin layer 12 is present, the surface base material 11 is more easily peeled from the side 11A than the two sides 11C and 11D.

  However, the outer unbonded portion 21 </ b> A does not have to be an unbonded portion at all positions corresponding to the one side 11 </ b> A of the outer edge portion of the surface base material 11. The outer unbonded portion 21A is provided only at the position corresponding to the corner portion 11E defined by the sides 11A and 11D, as shown in FIG. May be. As described above, the outer base non-bonded portion 21A is arranged at the corner portion 11E, so that the surface base material 11 can be easily peeled off from the corner portion 11E.

When the outer unbonded portion 21A has an elongated shape as described above, it is preferable that the width of the outer unbonded portion 21A is about 2 to 10 mm. Preferably there is. By setting the width to 2 mm or more, the surface substrate 11 can be easily grasped when the surface substrate 11 is peeled off together with the resin layer 12. Further, by setting the thickness to 10 mm or less, even if printing is performed in a state where the surface base material 11 at a position corresponding to the outer unbonded portion 21A is folded, there is little possibility of adversely affecting the printing.
When the outer unbonded portion 21 is provided only at the corner, the width and height are preferably smaller than the width of the resin layer 12, and from the same viewpoint as described above, the width is 2 to 10 mm. In addition, the height is preferably 2 to 10 mm.

  Also in the second embodiment, as in the first embodiment, the resin layer 12 does not need to be composed of two elongated portions. For example, as shown in FIGS. 6 and 7, the resin layer 12 is provided over the entire circumference of the outer peripheral region, becomes a B-shaped shape 12D, and corresponds to a side 11A of the surface base material 11 or a position corresponding to the corner 11E. The outer unbonded portion 21A may be provided. Of course, at least one of the surface base material 11 and the intermediate base material 13 may not have heat-sensitive color development.

[Method for producing pseudo-adhesive label]
Next, an example of a method for manufacturing the pseudo-adhesive label according to the first and second embodiments will be described.
An example of a method for producing a pseudo-adhesive label of the present invention is a coating step in which a heated hot melt adhesive is partially applied to a surface substrate, and the applied hot melt adhesive is cooled, And a bonding step of bonding an intermediate base material to the cooled hot melt adhesive (resin layer).
According to the above manufacturing method, in the coating process, it is possible to laminate the resin layer on the surface substrate in a non-peelable manner by applying the heated hot melt adhesive to the surface substrate.

In addition, as described above, when the surface base material has a heat-sensitive color forming property and the surface base material is provided with a heat-sensitive color forming layer, the hot melt adhesive has the surface of the surface base material provided with the heat-sensitive color forming layer. Is coated on the opposite side. Thereby, the heated hot melt adhesive is not directly in contact with the heat-sensitive color forming layer of the surface base material, and the surface base material is less likely to be colored by heating during coating. In addition, even when the intermediate substrate has a heat-sensitive color developing property and a heat-sensitive color forming layer is provided on the intermediate substrate, an unadhered portion having no resin layer is provided, so that the main surface of the intermediate substrate is a hot melt adhesive. Coloring does not occur because of no heating. Also, at the portion where the intermediate substrate and the resin layer are in contact, the resin layer is cooled to an appropriate temperature and bonded to the intermediate substrate so as to ensure pseudo-adhesiveness, so the intermediate substrate at the portion in contact with the resin layer is the same It becomes difficult to be colored.
In addition, in the bonding process, the intermediate substrate alone may be bonded to the resin layer (hot melt adhesive), but a laminate in which another layer is stacked on the intermediate substrate may be used. Specific examples of the laminate include a pressure-sensitive adhesive sheet in which a release sheet, a pressure-sensitive adhesive layer, and an intermediate substrate are laminated in this order.

In the above production method, the hot melt adhesive is preferably heated so as to be melted when applied on the surface substrate, and the temperature of the hot melt adhesive at the time of application (coating) Specifically, the temperature is preferably 120 to 210 ° C, and more preferably 130 to 190 ° C. By setting it as these temperature ranges, while being able to make coating property favorable, it prevents that a surface base material develops a color or a curl generate | occur | produces.
The intermediate substrate is bonded to the resin layer so that pseudo-adhesiveness is expressed. The temperature of the resin layer surface (bonding temperature) at the time of bonding is, for example, about 30 to 90 ° C., preferably 40. It is about ~ 60 degreeC.

The above manufacturing method is performed using, for example, a pseudo-adhesive label manufacturing apparatus 30 shown in FIG. Hereinafter, an example in which the pseudo adhesive label 10 is manufactured by the pseudo adhesive label manufacturing apparatus 30 illustrated in FIG. 8 will be described in detail.
The pseudo-adhesive label manufacturing apparatus 30 includes an adhesive coating apparatus 31 that coats a hot-melt adhesive on one surface of the surface base material 11, and a coating pressure-bonding roll 32 that is provided to face the adhesive coating apparatus 31. And a press roll 33 for adhering the intermediate base material 13 to the resin layer 12 provided so as to be adjacent to the coating press roll 32 and formed of a hot melt adhesive. The adhesive coating device 31 is a combination of an intermittent coating unit 31A disposed on the upstream side and a stripe coating unit 32B disposed on the downstream side. The intermittent coating unit 31A and the stripe coating unit 32B are a hot melt coater or the like that extrudes and applies a hot melt adhesive that has been heated and melted.

In the manufacturing apparatus 30, the surface base material 11 is fed from the first feeding roll 35, passes through the guide roll 36, travels to the coating pressure roll 32, and is wound around the coating pressure roll 32. At this time, when the surface base material 11 has a thermosensitive coloring layer, the surface 11Y opposite to the surface 11X on which the thermosensitive coloring layer is provided is disposed on the outer peripheral side of the coating pressure-bonding roll 32.
Next, a hot melt adhesive is applied to the surface base material 11 wound around the coating pressure roll 32 by the adhesive coating device 31 at a predetermined coating temperature.

The adhesive coating device 31 can partially apply the resin layer 12 on the surface substrate 11 by including the intermittent coating unit 31A and the streaks coating unit 31B as described above. The intermittent coating unit 31 </ b> A is a unit that intermittently applies the hot melt adhesive along the MD direction on the surface base material 11 by controlling on / off of the coating liquid supply valve. Therefore, the intermittent coating unit 31A can make the resin layer an elongated shape parallel to the TD direction. The streaks coating unit 31B has a shim formed of a comb-shaped plate attached to the coater head, dams a part of the hot melt adhesive, and provides a discharge part and a non-discharge part on the coater head, thereby providing a hot melt adhesive. Is a unit that applies a streak along the MD direction. Therefore, for example, the stripe applying unit 31B can have a resin layer in an elongated shape parallel to the MD direction (flow direction).
In the adhesive coating apparatus 31, it is possible to apply various patterns on the surface base material 11 by combining these two intermittent coating units 31A and the stripe coating unit 31B. For example, two elongated portions are applied by the intermittent coating unit 31A, and two elongated portions perpendicular to these are applied by the muscle coating unit 31B, so that the resin layer is formed as shown in FIGS. It is possible to make it B-shaped.

Further, by using one of the intermittent coating unit 31A and the muscle coating unit 31B, it is possible to form the resin layer 12 composed of two elongated portions 12A and 12B, as shown in FIG. It is. Moreover, as shown in FIG. 4, it is also possible to provide a long rectangular outer unbonded portion 21A.
In the adhesive coating device 31, one of the intermittent coating unit 31A and the stripe coating unit 31B may be omitted. Even if one of them is omitted, as described above, the elongated rectangular resin layer 12 and the outer unbonded portion 21A can be formed.
Further, the intermittent coating unit 31A is configured to be able to apply the hot melt adhesive in a stripe shape along the MD direction, and to be configured to be able to intermittently apply the muscle coating unit 31B. Thus, as shown in FIGS. 5 and 7, it is possible to provide an outer unbonded portion only at the corner portion in the outer peripheral region.

  The surface base material 11 coated with the hot melt adhesive is sent between the pressure-bonding roll 33 and the coating pressure-bonding roll 32 while being wound around the coating pressure-bonding roll 32. Here, the coating pressure-bonding roll 32 has a cooling function through which cooling water or the like is passed. Therefore, since the heat-sensitive color developing layer is cooled in direct contact with the coating pressure-bonding roll 32, the hot melt adhesive heated to the coating temperature does not cause color development. Further, since the hot melt adhesive is cooled by the coating pressure roll 32 until it is sent to the pressure contact point with the pressure roll 33, the heated hot melt adhesive is cooled to a predetermined temperature, The resin layer 12 having properties suitable for exhibiting pseudo-adhesiveness is laminated on one surface of the substrate 11 (see FIG. 9).

From the second feeding roll 37, for example, the pressure-sensitive adhesive sheet 20 is sent between the pressure-bonding roll 33 and the coating pressure-bonding roll 32. As shown in FIG. 9, the adhesive sheet 20 is formed by laminating a release sheet 15, an adhesive layer 14, and an intermediate base material 13 in this order. In addition, when the thermosensitive coloring layer is provided on the intermediate substrate 13, the thermosensitive coloring layer is disposed on the surface 20 </ b> X of the pressure-sensitive adhesive sheet 20.
Next, between the pressure-bonding roll 33 and the coating pressure-bonding roll 32, the surface 20X of the pressure-sensitive adhesive sheet 20 is pressure-bonded and bonded to the resin layer 12, thereby obtaining the pseudo-adhesive label 10 and the winding roll 38. Rolled up.
According to the pseudo-adhesive label manufacturing apparatus 30 shown in FIG. 8, since the formation of the resin layer and the bonding of the resin layer and the intermediate substrate can be continuously performed in a series of steps, the number of steps can be reduced. A pseudo-adhesive label can be manufactured.

  The pseudo-adhesive label manufacturing apparatus 30 may further include a cooling roll (not shown). The cooling roll has a cooling function when the outer peripheral surface is formed of a metal cylinder and cooling water or the like is passed through the inside of the cooling roll. A cooling roll has a structure which contacts the outer peripheral surface of a coating pressure-bonding roll in the position which does not contact the coating pressure-bonding roll 32 and a surface base material. If it cools with the said cooling roll, the surface base material 11 and a hot-melt-adhesive can be indirectly cooled via the coating press-bonding roll 32. FIG. The cooling roll and the coating pressure-bonding roll 32 may be cooled at the same time, or one of them may be cooled. When the cooling roll is provided, the coating pressure-bonding roll 32 is further efficiently cooled by the cooling roll, and can be cooled under temperature control.

The pseudo-adhesive label manufacturing apparatus 30 can further include a printing apparatus as necessary. As a printing apparatus, one or a plurality of units can be installed at an arbitrary position of the pseudo-adhesive label manufacturing apparatus 30. For example, if a print head for printing from the lower side in FIG. 8 toward the web is installed between the pressure roll 33 and the take-up roll 38, a pseudo-adhesive label having a print pattern on the surface 11X of the surface substrate can be manufactured. . Further, if a print head for printing from the upper side in FIG. 8 toward the web is installed between the first feeding roll 35 and the guide roll 36, a printing pattern is provided between the surface base material 11 and the resin layer 12. A pseudo-adhesive label can be manufactured. If a print head for printing from the upper left direction in FIG. 8 toward the web is installed between the second feed roll 37 and the pressure roll 33, a pseudo adhesive label having a print pattern on the surface 20X of the intermediate substrate. Can be manufactured. As a printing apparatus used for the pseudo adhesive label manufacturing apparatus 30, a flexographic printing apparatus or the like is preferable.
Such a printing device is not applied to variable information such as heat-sensitive color development, but applied to give a pseudo-adhesive label with a fixed logo or design pattern, a printed pattern such as a ruled line, or a concealed printing layer. Is done.

  The pseudo-adhesive label manufacturing apparatus 30 may further include a punching device, a scrap removal device, or the like as necessary. Examples of the punching device include a die cutting device and a laser cutting device equipped with a pinnacle blade and a Thomson blade. With these punching devices, a punching process that leaves the release sheet 15 and cuts the layer from the surface base material 11 to the pressure-sensitive adhesive layer 14, a half cut that cuts the layer from the surface base material 11 to the resin layer 12, or a sewing machine Eye processing can be performed. When punching out the pseudo-adhesive label 10 into a closed shape on the outer periphery, it is preferable to remove the outer side from the outer periphery with a residue removing device. At this time, the position of the punching blade is precisely adjusted based on the application pattern of the resin layer, and the resin layer is partially provided at a predetermined position of the pseudo-adhesive label. For example, along the one side of the surface base material It is also possible to form the outer unbonded portion 21 </ b> A extending in this manner.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not restrict | limited by these examples.

The measurement method and evaluation method in the present invention are as follows.
(1) Melt viscosity The melt viscosity at 160 ° C of the hot melt adhesive was measured with a Brookfield B-type viscometer (rotor No. 27, rotation speed 20 rpm).
(2) Softening point The softening point of the hot melt adhesive was measured by the ring and ball method (JIS K 7234 4.1).
(3) Peeling force Of the pseudo-adhesive label, only the portion provided with the resin layer was cut out to obtain a peeling force measuring sample having a length of 100 mm. The sample for measurement was peeled off at room temperature (23 ° C.) using a tensile tester on the condition that the surface substrate side was peeled off at a peeling angle of 180 ° and a peeling speed of 0.3 m / min. The peel force (mN / 50 mm) was measured. In addition, about the sample for a measurement, when the width | variety of the resin layer was less than 50 mm, the part which can extract the maximum width in the sample was cut out, the peeling force per that width was measured, and it converted into the peeling force per 50 mm.
When the peel force is 500 to 1500 mN / 50 mm, it is evaluated as “A” as it can be peeled without problems when peeling off the surface base material, and when it is other than A at 300 to 2000 mN / 50 mm, it is used. It was evaluated as “B” as being possible, and a peeling force other than the above was evaluated as “F” as being unusable.
(4) Workability The surface base material side was peeled from the pseudo-adhesive label by hand, and the peelability at that time was evaluated according to the following evaluation criteria.
A: The surface base material did not peel off arbitrarily, the surface base material and the intermediate base material were not damaged at all, and the peeling workability was good.
B: The surface base material did not peel off without permission, and the peeled surface base material could be used as a receipt for curling, but there was no problem in the workability of the peeling.
F: Use in which the surface substrate is peeled off on its own, or the curled surface substrate is too large to be used as a receipt, or either the surface substrate or the intermediate substrate is shredded There was a problem in peeling workability due to the impossible damage.
(5) Printing test From the surface side of the first thermal substrate of the pseudo-adhesive label, "110Xi4" manufactured by Zebra Technologies
”Was used for printing. After printing, the first thermal base material was peeled off from the second thermal base material together with the resin layer, and the printing state of the second thermal base material was visually confirmed and evaluated according to the following criteria.
A: Characters could be clearly observed and printability was good.
B: Although the printed characters were somewhat unclear, the characters could be recognized.
F: The printed characters could not be seen or recognized.

Example 1
The pseudo adhesive label shown in FIGS. 1 and 2 was manufactured as follows using the pseudo adhesive label manufacturing apparatus 30 shown in FIG.
First, a thermal paper “TP50KS-HS” (width 100 mm, thickness: 64 μm) manufactured by Nippon Paper Industries Co., Ltd. was prepared as the surface substrate 11. Further, as the pressure-sensitive adhesive sheet 20, thermal paper “TP50KS-HS” (thickness: 64 μm) manufactured by Nippon Paper Industries Co., Ltd. is used for the intermediate substrate 13, and acrylic pressure-sensitive adhesive “PW” (thickness manufactured by Lintec Corporation) is used for the pressure-sensitive adhesive layer 14. : 20 μm), an adhesive sheet (width 100 mm) using a release paper “SP-8K Ao” manufactured by Lintec Corporation as the release sheet 15 was prepared. In addition, the thermosensitive coloring layer of the intermediate substrate was provided on the surface opposite to the surface on the pressure-sensitive adhesive layer side. Further, as a hot melt adhesive, an olefin resin hot melt adhesive (“EP-90” manufactured by MORESCO) having a softening point of 148 ° C. and a 160 ° C. melt viscosity of 11000 mPa · s was prepared.

First, the surface base material 11 was set on the first feeding roll 35, and the adhesive sheet 20 was set on the second feeding roll 37. The surface base material 11 fed from the first feed roll 35 is wound around the coating pressure-bonding roll 32, and one hot melt coater is provided on the surface of the surface base material 11 opposite to the surface on which the thermosensitive coloring layer is provided. Then, extrusion coating was carried out at a resin extrusion temperature (coating temperature) of 180 ° C. so that the thickness of the resin layer was 20 μm, and a resin layer was formed on the surface substrate. In addition, 20 degreeC water was circulated through the inside of the coating pressure-bonding roll 32. The coater head is equipped with a shim so that a 20 mm discharge portion, a 50 mm non-discharge portion, and a 20 mm discharge portion are arranged in this order, and the resin layer is opposed to the surface base material in the pseudo-adhesive label. It was patterned so as to be two elongated portions with a width of 20 mm provided at positions along the two sides. Each elongated portion was parallel to the MD direction.
Next, the pressure-sensitive adhesive sheet 20 was bonded to the resin layer 12 at 50 ° C. between the pressure-bonding roll 33 and the coating pressure-bonding roll 32 so that the surface on the intermediate base material 13 side was in contact with the resin layer 12. In addition, the temperature at the time of bonding is obtained by measuring the temperature of the resin layer surface with a non-contact thermometer using infrared rays. Thereafter, the pseudo-adhesive label shown in FIGS. The size of the pseudo-adhesive label 10 after being punched (that is, the size of the surface base material on the release sheet 15) was 90 mm × 90 mm.

Example 2
This was carried out in the same manner as in Example 1, except that Nippon Paper Industries Co., Ltd. thermal paper “TP77KS-HS” (thickness: 105 μm) was used as the surface substrate.

Example 3
The coater had a hot melt supply line capable of intermittent application in the flow direction, and a shim having a single opening having a width of 95 mm was attached to the coater head. And it is carried out in the same manner as in Example 1 except that the hot melt adhesive is intermittently applied by repeating the application part: 20 mm, the non-application part: 50 mm, the application part: 20 mm, and the non-application part 10 mm along the flow direction. The pseudo-adhesive label shown in FIGS. In the pseudo-adhesive label, the resin layer was patterned into two elongated portions with a width of 20 mm provided at positions along two opposing sides of the surface base material by intermittent application. Each elongated portion was parallel to the TD direction.

Example 4
A shim is mounted on the coater head so that a 20 mm discharge portion, a 48 mm non-discharge portion, and a 20 mm discharge portion are arranged in this order, and a width of 2 mm is provided outside one elongated portion along one side of the surface base material. The same procedure as in Example 1 was conducted except that the outer unbonded portion was provided, and the pseudo-adhesive label shown in FIG. 4 was obtained.

Example 5
The same operation as in Example 1 was performed except that the thickness of the resin layer was 30 μm.

Example 6
The same operation as in Example 1 was performed except that the thickness of the resin layer was 15 μm.

Example 7
The pseudo-adhesive label shown in FIG. 2 is manufactured in the same manner as in Example 6 except that a shim is mounted on the coater head so that a 5 mm discharge portion, an 80 mm non-discharge portion, and a 5 mm discharge portion are arranged in this order. did. In the pseudo-adhesive label, the resin layer was patterned into two elongated portions having a width of 5 mm provided at positions along two opposing sides of the surface base material. Each elongated portion was parallel to the MD direction.

DESCRIPTION OF SYMBOLS 10 ... Pseudo-adhesive label 11 ... Surface base material 12 ... Resin layer 13 ... Intermediate base material 14 ... Adhesive layer 15 ... Release sheet 20 ... Adhesive sheet 21 ... Non-adhesive part 21A ... Outer non-adhesive part 30 ... Pseudo-adhesive label manufacturing apparatus 31 ... Adhesive coating device 32 ... Coating pressure roll 33 ... Pressure roll

Claims (12)

A surface base material, a resin layer, an intermediate base material, an adhesive layer, and a release sheet are laminated in this order, and are laminated so as to have pseudo adhesion between the resin layer and the intermediate base material,
The pseudoadhesive label which the said resin layer is provided in part and has an unadhered part without the said resin layer between the said surface base material and the said intermediate base material.   The pseudo-adhesive label according to claim 1, wherein the resin layer is provided in at least a part of an outer peripheral region between the surface base material and the intermediate base material, and has the non-adhered portion in an inner region.   The pseudo-adhesive label according to claim 1 or 2, wherein the non-adhered portion is provided at a position corresponding to at least a part of an outer edge portion of the surface base material.   The pseudo-adhesive label according to claim 3, wherein at least the non-adhered portion is provided at a position corresponding to a corner section defined on two sides of the surface base material.   The pseudoadhesive label according to any one of claims 1 to 4, wherein the resin layer is formed from a hot-melt adhesive containing a thermoplastic resin.   The pseudoadhesive label according to any one of claims 1 to 5, wherein the surface base material has heat-sensitive color development.   The pseudoadhesive label according to any one of claims 1 to 6, wherein the intermediate base material has heat-sensitive color development.   Both of the surface base material and the intermediate base material have heat-sensitive color development, and the same information can be printed on the surface base material and the intermediate base material from the surface on the surface base material side. The pseudo-adhesive label according to any one of the above.   The pseudoadhesive label according to any one of claims 1 to 8, which is used as a delivery slip label.   The pseudo-adhesive label is to be peeled and removed from the release sheet, and then adhered to a delivery article via the pressure-sensitive adhesive layer. The surface base material is peeled from the intermediate base material together with the resin layer. The pseudoadhesive label according to claim 9, which is used as a receipt to be taken home.   The peeling force at a location where the resin layer between the resin layer and the intermediate substrate is provided is 300 to 2000 mN / 50 mm at a peeling angle of 180 ° and a peeling speed of 0.3 m / min. The pseudo-adhesive label according to crab. It is a manufacturing method of the pseudoadhesive label which manufactures the pseudoadhesive label in any one of Claims 1-11,
A coating step of partially applying a heated hot melt adhesive on the surface substrate, and cooling the applied hot melt adhesive, and adding the intermediate group to the cooled hot melt adhesive A method for producing a pseudo-adhesive label comprising a bonding step of bonding materials.

Images