JP2025007914A - Storage label laminate and method of manufacturing same - Google Patents

Abstract

[Problem] To provide a storage label laminate that can reduce the amount of waste release sheets that are peeled off when affixing to an article and discarded as garbage, and that can be easily manufactured by a simple method.
[Solution] A laminate of storage labels, the laminate including at least two or more tack papers laminated in this order: a base sheet, an adhesive layer, and a release sheet consisting of a release layer and a support sheet, and in two adjacent tack papers, the release sheet of one tack paper and the base sheet of the other tack paper are partially joined via an adhesive layer, thereby forming a storage section capable of holding an item to be contained.
[Selected Figure] Figure 1 (C)

Description

The present invention relates to a laminate of storage labels and a manufacturing method thereof. In particular, the present invention relates to a laminate of storage labels that has an opening and a storage section capable of storing an object to be stored, and is used by being affixed to an article, and a manufacturing method thereof.

Conventionally, there has been known a storage label having a bag-shaped storage section capable of storing thin items such as various documents, pamphlets, and cards, as typified by a delivery pack that can be attached to an item while storing, for example, an itemized list of contents, a delivery note, and a receipt. In such a storage label, the storage section is formed between a base sheet and a cover film superimposed on the surface of the base sheet, and an adhesive layer to be attached to the item is formed on the back surface of the base sheet (the side opposite to the cover film). Before being attached to an item, the storage label generally has the adhesive layer covered with a release sheet.

By the way, the release sheet is peeled off when the storage label is attached to the item and is discarded as waste. Therefore, if the release sheet could be eliminated, the amount of waste could be reduced, which would be effective in saving resources and cutting costs.

Patent Document 1 (JP Patent Publication 2008-197261 A) discloses a storage label that includes a main body in which a storage section is formed between two layers of film by bonding all or part of the peripheral portions of two layers of film, an adhesive layer provided on the back surface of the lower film for attaching the main body to an object, and an item stored in the storage section of the main body, and the adhesive layer and adhesive layer are each made of a heat-sensitive adhesive.

Patent Document 2 (Utility Model Registration No. 3111630) discloses a bag-shaped slip cover made by laminating two plastic films and heat-welding the three edges with one end open, in which multiple rows of band-shaped adhesive layers are formed on the back of the lower sheet of the slip cover, and a release coating layer is formed on the surface of the upper sheet, resulting in an adhesive bag for slip covers without release paper.

JP 2008-197261 A Utility Model Registration No. 3111630

In Patent Document 1, a heat-sensitive adhesive is used as an adhesive layer provided on the back surface of the lower film for adhering to the object to be attached. Since the heat-sensitive adhesive does not exhibit adhesiveness at room temperature, there is no need to temporarily attach it to a release paper, which solves the above problem. However, since the heat-sensitive adhesive exhibits adhesiveness when heated, a heating device is required to attach it to the object to be attached.

In Patent Document 2, a release coating layer is formed on the surface of the transparent plastic film that becomes the upper sheet, so it is necessary to wind it up in a roll. This requires the formation of separation lines such as perforations to separate the continuous film formed in the width direction into individual sheets, and the application of multiple rows of band-like adhesive layers, which makes the manufacturing process complicated.

The present invention was completed in consideration of the above problems, and in one embodiment, it aims to provide a storage label laminate that can be easily manufactured by a simple method and that can reduce the amount of waste release sheets that are peeled off when affixing to an article and discarded as garbage. In another embodiment, it aims to provide a method for manufacturing such a storage label laminate.

As a result of intensive research, the inventors have found that a structure in which two or more tack papers are stacked in order, as described below, can reduce the amount of release sheet waste that is discarded as garbage, can be easily manufactured by a simple method, and can solve the above-mentioned problems. The present invention was completed based on the above findings, and is exemplified below.

In one aspect, the present invention is a laminate of storage labels, the laminate including at least two or more tack papers in which a base sheet, an adhesive layer, and a release sheet consisting of a release layer and a support sheet are laminated in this order, and in two adjacent tack papers, the release sheet of one tack paper and the base sheet of the other tack paper are partially joined via an adhesive layer, thereby forming a storage section capable of storing an item to be stored.

In one embodiment of the present invention, the tack paper in the outermost layer of the laminate may be configured to include only a release sheet, without including a base sheet or an adhesive layer.

In one embodiment of the present invention, the adhesive layer can be provided along the periphery of the tack paper in a shape that has a partial opening.

In one embodiment of the present invention, the tack paper has a rectangular peripheral edge, and the adhesive layer can be provided in a U-shape on the peripheral edge so that at least one side of the rectangle is an opening.

In one embodiment of the present invention, the tack paper has a rectangular peripheral portion, the adhesive layer is provided in a square shape surrounding the peripheral portion, and the release sheet can have an opening formed by a slit through which the contents can be placed.

In one embodiment of the present invention, the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and an area where the base sheet is partially missing can be provided on the peripheral portion of the tack paper on the opening side so that at least one side of the peripheral portion is an opening.

In one embodiment of the present invention, the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and the release sheet can be provided with a cut for partially removing the release sheet so that at least one side of the peripheral portion becomes an opening.

In one embodiment of the present invention, the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and the release sheet can have an area where the release sheet is partially missing so that at least one side of the peripheral portion becomes an opening.

In another aspect, the present invention is a method for manufacturing a laminate of storage labels, the method including a first step of preparing at least two pieces of tack paper in which a base sheet, an adhesive layer, and a release sheet consisting of a release layer and a support sheet are laminated in this order; a second step of providing an adhesive layer on the rear surface of the release sheet of the tack paper or on the front surface of the base sheet, or on the peripheral portion of both; and a third step of stacking and bonding at least two pieces of the tack paper together to stack the tack papers.

In one embodiment of the present invention, the method can include a first step of preparing at least two pieces of tack paper each having a size n times (n is an integer of 2 or more) the size of the storage label, a second step of providing n adhesive layers conforming to the shape of the peripheral portion of the storage label on the back surface of the release sheet of the tack paper or on the front surface of the base sheet or on both, a third step of stacking and bonding at least two pieces of tack paper together to form a tack paper laminate, and a fourth step of cutting the tack paper laminate to the size of the storage label.

In one embodiment of the present invention, the method may further include a step of providing a slit in either the base sheet or the release sheet for accommodating an object to be contained.

In one embodiment of the present invention, the method may further include the steps of providing a cut in either the base sheet or the release sheet for accommodating an object to be contained, and partially removing the base sheet or the release sheet along the cut.

According to the storage label laminate of one embodiment of the present invention, by using the release sheet used in the tack paper as the upper film, it is possible to reduce the amount of waste release sheets that are peeled off when affixed to an item and discarded as garbage. In addition, the storage label laminate can be easily manufactured by the simple method of simply laminating the tack paper as is.

FIG. 2 is a schematic diagram for explaining a stack of storage labels of the present invention. FIG. 2 is a schematic diagram for explaining a stack of storage labels of the present invention. FIG. 2 is a schematic diagram for explaining a stack of storage labels of the present invention. 10 is a schematic diagram for explaining another example of the storage-label laminate of the present invention. FIG. 1 is a schematic diagram for explaining an example of a configuration of a storage label of the present invention. 1 is a schematic diagram for explaining an example of a configuration of a storage label of the present invention. 11 is a schematic diagram for explaining another example of the configuration of the storage label of the present invention. FIG. 11 is a schematic diagram for explaining another example of the configuration of the storage label of the present invention. FIG. 11 is a schematic diagram for explaining another example of the configuration of the storage label of the present invention. FIG. 1 is a schematic diagram for explaining an example of a storage-label laminate of the present invention. 1 is a schematic diagram for explaining an example of a storage-label laminate of the present invention. 1 is a schematic diagram for explaining an example of a storage-label laminate of the present invention. 6 is a schematic diagram for explaining an example of a storage label in the stack of storage labels shown in FIG. 5(A) to FIG. 5(C). 6 is a schematic diagram for explaining an example of a storage label in the stack of storage labels shown in FIG. 5(A) to FIG. 5(C). 6 is a schematic diagram for explaining an example of a storage label in the stack of storage labels shown in FIG. 5(A) to FIG. 5(C). 13 is a schematic diagram of a tack paper to explain yet another example of a storage label laminate of the present invention. FIG. 13 is a schematic diagram of a tack paper to explain yet another example of a storage label laminate of the present invention. FIG. 8 is a schematic diagram for explaining an example of a stack of storage labels of the present invention using the tack paper of FIG. 7(A) and FIG. 7(B). 8 is a schematic diagram for explaining an example of a stack of storage labels of the present invention using the tack paper of FIG. 7(A) and FIG. 7(B). 8 is a schematic diagram for explaining an example of a stack of storage labels of the present invention using the tack paper of FIG. 7(A) and FIG. 7(B). 8(A) to 8(C) are schematic diagrams for explaining the storage label in the stack of storage labels of the present invention. 8(A) to 8(C) are schematic diagrams for explaining the storage label in the stack of storage labels of the present invention. 8(A) to 8(C) are schematic diagrams for explaining the storage label in the stack of storage labels of the present invention. 9(A) to 9(C) are schematic diagrams for explaining the storage label of the present invention. 9(A) to 9(C) are schematic diagrams for explaining the storage label of the present invention. 13 is a schematic diagram of a tack paper to explain yet another example of a storage label laminate of the present invention. FIG. 13 is a schematic diagram of a tack paper to explain yet another example of a storage label laminate of the present invention. FIG. 13 is a schematic diagram of a tack paper to explain yet another example of a storage label laminate of the present invention. FIG. 12 is a schematic diagram for explaining a stack of storage labels of the present invention using the tack paper of FIG. 11(A) to FIG. 11(C). 12 is a schematic diagram for explaining a stack of storage labels of the present invention using the tack paper of FIG. 11(A) to FIG. 11(C). 12 is a schematic diagram for explaining a stack of storage labels of the present invention using the tack paper of FIG. 11(A) to FIG. 11(C). 12(C)的收盖的组件 ...。 FIG. 12(C) is a schematic diagram illustrating the storage label in the stack of storage labels. 1 is a schematic diagram for explaining an example of a method for producing a storage-label laminate of the present invention. FIG. 1 is a schematic diagram for explaining an example of a method for producing a storage-label laminate of the present invention. FIG. 1 is a schematic diagram for explaining an example of a method for producing a storage-label laminate of the present invention. FIG.

Next, the embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments, and it should be understood that appropriate design changes, improvements, etc. may be made based on the ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. Note that the dimensions, scales, angles, etc. in the drawings illustrating each embodiment of the present invention are shown for convenience to aid understanding, and do not necessarily represent the actual dimensions, scales, angles, etc.

1. Stack of Storage Labels
1(A) to 1(C) are schematic diagrams for explaining a storage label laminate 100 of the present invention. According to FIG. 1(A) to FIG. 1(C), the storage label laminate 100 of one embodiment of the present invention includes at least two or more tack papers 10 (FIG. 1(A), (B)) in which a base sheet 1, an adhesive layer 2, and a release sheet 3 consisting of a release layer 31 and a support sheet 32 are laminated in this order, and in two adjacent tack papers 10, the release sheet 3 of one tack paper (FIG. 1(A)) and the base sheet 1 of the other tack paper (FIG. 1(B)) are partially bonded via an adhesive layer 4, thereby forming a storage section capable of storing an object to be stored (FIG. 1(C)). When peeled from the laminate 100, the release sheet 3 and the base sheet 1 including the storage section form a storage label 5 capable of storing an object to be stored. The adhesive layer 4 can be provided along the peripheral portion of the tack paper 10 in a shape that is partially open. In the example of Figure 1, the tack paper 10 has a rectangular peripheral portion consisting of two pairs of opposing sides, and in Figure 1 (B) an adhesive layer 4 is provided in a U-shape on the surface of the base sheet 1 opposite the release sheet 3 so that at least one side of the peripheral portion becomes an opening.

As shown in FIG. 1(A), the tack paper 10 used in this embodiment may be a laminate of a base sheet 1, an adhesive layer 2, and a release sheet 3 consisting of a release layer 31 and a support sheet 32, laminated in this order. The number of sheets of tack paper 10 is not particularly limited, but may be, for example, 3 or more and 500 or less.

The base sheet 1 used in the tack paper 10 is not particularly limited, and for example, a paper base material or a resin film base material can be used depending on the purpose and usage situation. Specifically, paper base materials such as fine paper, art paper, coated paper, cast coated paper, etc., synthetic resin films such as polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, cellulose, etc., synthetic papers made mainly from these synthetic resins, etc. can be used. If necessary, an easy-adhesion treatment can be applied to improve the adhesion between the base sheet and the adhesive layer.

The thickness of the base sheet 1 is appropriately 10 to 300 μm, and preferably 10 to 100 μm. There are no particular limitations on the shape or size of the base sheet 1, but a rectangular shape with a rectangular periphery consisting of two pairs of opposing sides is usually suitable for containing the contents.

The adhesive layer 2 is not particularly limited, and general adhesives, strong adhesives, weak adhesives, removable adhesives, etc. can be used depending on the purpose and usage situation. Specifically, adhesives such as acrylic, urethane, epoxy, rubber, polyester, cellulose, emulsion, etc. can be used. In addition, fillers, tackifiers, hardeners, etc. can be appropriately used as additives to improve the properties of the adhesive, if necessary.

The thickness of the adhesive layer 2 is not particularly limited as long as it allows attachment to an adherend, and is usually 20 μm to 200 μm, preferably 25 μm to 75 μm. When forming the adhesive layer 2 on the base sheet 1, the adhesive can be formed using a coating method such as gravure coating, gravure reverse coating, comma coating, knife coating, or die coating.

The material of the release sheet 3 is not particularly limited, and any conventionally known material can be used. As the release sheet 3, a release layer 31 using a release agent such as silicone resin, fluororesin, alkyd resin, wax, etc. is formed on a support sheet 32 such as paper or synthetic paper such as fine paper, craft paper, glassine paper, clay-coated paper, etc., synthetic resin film such as polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, cellulose, etc., or polylaminated paper made by laminating synthetic resin such as polyethylene on craft paper or fine paper, etc., is appropriately used.

When forming the release layer 31 on the support sheet 32, the release agent can be applied using a coating method such as gravure coating, gravure reverse coating, comma coating, knife coating, or die coating.

The release sheet 3 is usually used to protect the adhesive layer 2, and is peeled off and discarded when affixed to the adherend, but in the present invention, the release sheet 3 is used as the upper film of the storage label 5, so it does not need to be discarded. It is preferable to use a transparent or translucent film for the upper film (release sheet 3) so that the contents stored in the storage section 52 can be seen through it. Conversely, it may be opaque so that the contents cannot be seen through it.

The thickness of the release sheet 3 is appropriately 10 to 300 μm, preferably 10 to 100 μm, and the shape, size, etc. of the release sheet 3 may be the same as that of the base sheet 1.

The material of the adhesive layer 4 is not particularly limited as long as it can bond the release sheet 3 and the base sheet 1 together, but a heat-sensitive adhesive layer that does not exhibit adhesiveness at room temperature but becomes adhesive when activated by heating is preferred for stacking the tack paper 10 to form the laminate 100.

The heat-sensitive adhesive layer is mainly composed of a thermoplastic resin such as vinyl acetate-ethylene copolymer, vinyl acetate-acrylic acid ester copolymer, vinyl acetate-ethylene-styrene copolymer, vinyl acetate-ethylene-vinyl chloride copolymer, vinyl-ethylene-acrylic acid ester copolymer, ethylene-vinyl chloride copolymer, (meth)acrylic acid ester copolymer, styrene-isoprene copolymer, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, etc., blended with a solid plasticizer or a tackifier, etc., and can be formed using a heat-sensitive adhesive such as a hot melt type adhesive, a heat seal type adhesive, or a delayed tack type adhesive. In particular, it is preferable to use a heat seal type adhesive or a delayed tack type adhesive, because patterns can be easily formed by printing methods such as screen printing, gravure printing, offset printing, and flexographic printing, and the adhesiveness activated by heating continues for a long time even after cooling. Furthermore, when a heat-sensitive adhesive is used for the adhesive layer 4, the temperature at which the adhesive layer 4 becomes activated and exhibits adhesive properties is 60°C to 180°C, preferably 80°C to 150°C.

The adhesive layer 4 is formed with a predetermined width around the periphery of the overlapped base sheet 1 and support sheet 32 so that at least a portion of the periphery becomes an opening 51, and the storage section 52 is formed inside the area surrounded by this periphery. The thickness of the adhesive layer 4 is appropriately 3 μm to 30 μm, and the width of the adhesive layer 4 formed on the periphery is appropriately designed depending on the size of the storage label 5. For example, for a storage label 5 with a length x width of 80 mm to 100 mm x 100 mm to 150 mm, the width of the adhesive layer 4 is preferably about 2 mm to 10 mm. Here, the width of the adhesive layer 4 means the shortest distance connecting the outer circumference and inner circumference of the adhesive layer 4.

Figure 2 is a schematic diagram for explaining another example of the storage label laminate 100 of this embodiment. In the storage label laminate 100 in which the tack papers 10 and 20 in Figure 1 (C) are simply stacked, the base sheet 1 and adhesive layer 2 of the outermost layer (i.e., the top in the drawing, meaning the tack paper 10 that is stacked first) are not used as the storage label 5, so they are not necessarily required. In Figure 2, the base sheet 1 of the topmost tack paper 10 has been removed together with the adhesive layer 2 from the storage label laminate 100 in Figure 1 (C). Alternatively, since the topmost base sheet 1 does not need to be used as the storage label 5, it can be freely used as a product package, such as for protecting the product (storage label) or displaying pictures, letters, etc. to convey product information.

Figures 3(A) and 3(B) are schematic diagrams for explaining an example of the configuration of the storage label 5 of this embodiment. In this embodiment, the storage label 5 that can be attached to an adherend has a release sheet 3 consisting of a release layer 31 and a support sheet 32 at the top, a base sheet 1 and an adhesive layer 2 at the bottom, and the release sheet 3 and the base sheet 1 are superimposed via an adhesive layer 4, as shown in Figure 3(A). As shown in Figure 3(B), the storage label 5 uses the release sheet 3 as an upper film and the base sheet 1 as a lower film, and the stored item 6 is stored between the release sheet 3 and the base sheet 1.

Figures 4(A) to 4(C) are schematic diagrams for explaining another example of the configuration of the storage label 5 of this embodiment. In Figure 4(A), the storage label 5 has a rectangular peripheral portion consisting of two pairs of opposing two sides, and an upper layer film consisting of a release sheet 3 and a lower layer film consisting of a base sheet 1 and an adhesive layer 2 are superimposed via an adhesive layer 4 provided in a square shape so as to surround the entire periphery of the peripheral portion (Figure 4(B)). In the storage label 5 of Figure 4, as shown in Figure 4(B), a slit 71 for storing the stored item 6 is provided in the release sheet 3, and as shown in Figure 4(c), the stored item 6 is stored through an opening formed by the slit 71 in the release sheet 3. Instead of the slit 71, it is also possible to provide a perforation that allows easy opening.

Figures 5(A) to 5(C) are schematic diagrams for explaining an example of a storage label laminate 100 of this embodiment. In Figure 5(A), the tack paper 10 has a rectangular peripheral portion consisting of two pairs of opposing sides, and a notch 72 is provided on one side of the peripheral portion of the base sheet 1. As shown in Figure 5(B), the base sheet 1 of the tack paper 10, which serves as the lower film, is overlapped along the notch 72 with one side partially missing (53) together with the adhesive layer 2, resulting in a storage label 5 laminate 100 as shown in Figure 5(C).

In the example of FIG. 5, the adhesive layer 4 is provided on the base sheet 1. The adhesive layer 4 may be provided in a U-shape on the peripheral portion of the base sheet 1, or in a square shape surrounding the entire peripheral portion. If the adhesive layer 4 is provided on the base sheet 1 of the tack paper 10, the base sheet 1 of the tack paper 10, which is the lower film before overlapping, and the adhesive layer 2 can be partially removed (53) from above the release sheet 3 along the incision 72.

Figures 6(A) to 6(C) are schematic diagrams for explaining the storage label 5 in the storage label laminate 100 shown in Figures 5(A) to 5(C). As shown in Figure 6(A), the storage label 5 is formed by overlapping an upper layer film made of a release sheet 3 and a lower layer film made of a base sheet 1 and an adhesive layer 2 with an adhesive layer 4 interposed therebetween. The base sheet 1 has an area 53 where one side (the opening side) is partially missing along a cut 72, and the upper layer film is protruding. As shown in Figure 6(B), the object 6 can be easily stored in the storage label 5 along the protruding upper layer film. Also, as shown in Figure 6(C), the storage label 5 containing the object 6 is bonded to the lower layer film via the adhesive layer 2 by folding the protruding upper layer film, so that the object 6 can be prevented from falling out unintentionally.

Figures 7(A) and 7(B) are schematic diagrams of tack paper 10 to explain yet another example of the storage label laminate 100 of the present invention. In Figure 7(A), the tack paper 10 has a rectangular peripheral portion consisting of two pairs of opposing sides, and as shown in Figure 7(B), a notch 73 is provided on one side of the peripheral portion of the release sheet 3.

Figures 8(A) to 8(C) are schematic diagrams for explaining an example of a stack 100 of storage labels using the tack paper of Figures 7(A) and 7(B). In Figure 8(A), a notch 73 is provided on one side of the peripheral portion of the release sheet 3 of the tack paper 10. As shown in Figure 8(B), an adhesive layer 4 is provided on the base sheet 1 of the tack paper 10, which serves as the lower film, and as shown in Figure 8(C), the upper tack paper 10 and the lower tack paper 10 are superimposed via the adhesive layer 4 to form the stack 100 of storage labels 5.

In the example of FIG. 8, the adhesive layer 4 is provided in a U-shape on the peripheral portion of the base sheet 1, except for an area 53 on the opening side. The area 53 on the opening side is an area that is partially missing from the release sheet 3 along a cut 73 when used as a storage label 5. The adhesive layer 4 may be provided in a U-shape up to the edge of the base sheet 1 on the opening side, or in a V-shape surrounding the entire peripheral portion. In this case, by providing a glue-killing layer (described later) in the area 53 on the opening side of the base sheet 1 or the adhesive layer 4, which becomes the lower film, it can be partially removed (53) along the cut 73 from the release sheet 3, which becomes the upper film after superposition.

9(A) to 9(C) are schematic diagrams for explaining the storage label 5 in the storage label stack 100 of Figs. 8(A) to 8(C). Fig. 9(A) is a structure including the uppermost base sheet 1 removed from the storage label stack 100 of Fig. 8(C). The base sheet 1 is removed together with the adhesive layer 2 and the opening side region 53 of the release sheet 3. Fig. 9(B) is a storage label 5 made of the storage label stack 100 of Fig. 8(C). The storage label 5 is configured such that an upper layer film made of the release sheet 3 from which the opening side region 53 has been removed, and a lower layer film made of the base sheet 1 and the adhesive layer 2 are superimposed via the adhesive layer 4, with the lower layer film protruding. Fig. 9(C) is the storage label stack 100 after one storage label 5 has been removed. The area 53 on the opening side of the release sheet 3 has been removed while remaining attached to the adhesive layer 2 of the storage label 5 in FIG. 9 (B).

Figures 10(A) and 10(B) are schematic diagrams for explaining the storage label 5 of Figures 9(A) to 9(C). Figure 10(A) differs from Figure 9(B) in that the region 53 on the opening side of the release sheet 3 attached to the adhesive layer 2 of the storage label 5 has been removed. The release sheet 3 in the region 53 on the opening side may be removed before or after it is attached to the adherend. The region 53 on the opening side made of the release sheet 3 is in the form of a thin film, so there is no problem in attaching it to the adherend even if it remains attached to the adhesive layer 2. In addition, since the release sheet 3 covers the adhesive layer 2 in the region 53 on the opening side, it functions as a handle when attaching it to the adherend, improving the workability of alignment, correcting the attachment position, etc.

As shown in FIG. 10(B), the object 6 can be easily accommodated in the storage label 5 along the protruding lower film. In addition, because the lower film protrudes from the upper film, the object 6 can be easily accommodated in the storage label 5 even after the storage label 5 is attached to the adherend.

Figures 11(A) to 11(C) are schematic diagrams of tack paper 10 to explain another example of the storage label laminate 100 of this embodiment. In Figure 11(A), the tack paper 10 has a rectangular peripheral portion consisting of two pairs of opposing sides, and as shown in Figure 11(B), a notch 73 is provided on one side of the peripheral portion of the release sheet 3. Also, as shown in Figure 11(C), the adhesive layer 2 has a glue-killing layer 8 in an area 53 on the opening side where the release sheet 3 is removed along the notch 73.

The adhesive-blocking layer 8 is a layer that partially seals the adhesive force of the adhesive layer 2, and can be formed by performing an adhesive-blocking treatment using silicone, varnish, or the like. This seals the adhesive force of the area 53 on the opening side of the adhesive layer 2, and allows the release sheet 3 to be easily removed along the cut 73. The adhesive-blocking treatment can be performed, for example, by once peeling the release sheet 3 from the tack paper 10, printing silicone or varnish on the part of the adhesive layer 2 where the adhesive force is to be sealed, and then re-attaching the release sheet 3. The thickness of the adhesive-blocking layer 8 is, for example, 1 μm to 10 μm, preferably 2 μm to 7 μm. The adhesive-blocking layer 8 may be formed with colored ink in addition to colorless varnish, and may also be formed by a method of partially attaching a film or a method of partially not providing an adhesive layer.

Figures 12(A) to 12(C) are schematic diagrams for explaining an example of a storage label laminate 100 using the tack paper 10 of Figures 11(A) to 11(C). In Figure 12(A), a notch 73 is provided on one side of the peripheral portion of the release sheet 3 of the tack paper 10, and a glue-blocking layer 8 is provided on the adhesive layer 2 in an area 53 on the opening side where the release sheet 3 is removed along the notch 73. As shown in Figure 12(B), an adhesive layer 4 is provided on the base sheet 1 of the tack paper 10, which becomes the lower layer film, and as shown in Figure 12(C), after the area 53 on the opening side of the release sheet 3 is removed along the notch 73, the upper tack paper 10 and the lower tack paper 10 are superimposed via the adhesive layer 4 to form a storage label laminate 100.

In the example of FIG. 12, the adhesive layer 4 is provided in a U-shape on the peripheral portion of the base sheet 1 except for the region 53 on the opening side, but as in the example of FIG. 8, the adhesive layer 4 may be provided in a U-shape up to the edge of the base sheet 1 on the opening side, or may be provided in a square shape surrounding the entire peripheral portion.

Figure 13 shows the storage label 5 in the storage label laminate 100 of Figure 12 (C). The storage label 5 is configured such that an upper layer film made of a release sheet 3 with the opening side area 53 removed and a lower layer film made of a base sheet 1 and an adhesive layer 2 are superimposed via an adhesive layer 4, with the lower layer film protruding. In Figure 13, the adhesive layer 8 covers the adhesive layer 2 in the opening side area 53, so unlike Figure 9 (B), even if the opening side area 53 made of the release sheet 3 is not attached to the adhesive layer 2, the opening side area 53 covered with the adhesive layer 8 functions as a knob when attaching to the adherend, improving workability. Also, as in Figure 10 (B), the contents 6 can be easily stored in the storage label 5 along the protruding lower layer film.

(2. Manufacturing method of the storage label laminate)
Next, a method for manufacturing the laminate of the storage label of the present invention will be described. Referring to Fig. 1, first, as shown in Fig. 1(A) and (B), tack papers 10 and 20 are prepared in which a base sheet 1, an adhesive layer 2, and a release sheet 3 consisting of a release layer 31 and a support sheet 32 are laminated in this order (first step). Here, one of the two tack papers (Fig. 1(A)) is assumed to be the upper tack paper 10, and the other (Fig. 1(B)) is assumed to be the lower tack paper 20. Next, an adhesive layer 4 is provided on the base sheet 1 of the lower tack paper 20 (second step). In Fig. 1, the tack papers 10 and 20 have a rectangular peripheral portion consisting of two pairs of opposing two sides, and the adhesive layer 4 is provided in a U-shape on the peripheral portion of the lower tack paper 20 so that one side is an opening. Next, the upper tack paper 10 and the lower tack paper 20 are overlapped via the adhesive layer 4 (third step). Similarly, any number of lower tack papers 20 are stacked together to produce a stack 100 of storage labels as shown in FIG. 1(C).

In FIG. 1(B), the adhesive layer 4 is provided in a U-shape on the periphery of the base sheet 1, but as shown in FIG. 4(A), it may be provided in a square shape around the entire periphery of the base sheet 1. Also, the adhesive layer 4 may be provided on the periphery of the release sheet 3 or the base sheet 1, or both, as long as two tack papers can be laminated together. Also, when a heat-sensitive adhesive layer is used for the adhesive layer 4, any number of sheets may be laminated, and then the sheets may be laminated by applying temperature and pressure using a heat press or the like. The temperature and pressure required for lamination may be appropriately set depending on the number of sheets to be laminated and the balance of the adhesive layer and adhesive layer. For example, if the number of sheets to be laminated is as small as about 10, the sheets may be laminated at a heating temperature of 80°C to 160°C, a pressing pressure of 0.1 MPa to 5 MPa, and a pressing time of about 1 second to 30 seconds. Also, if the number of overlapping sheets is large, such as about 50 sheets, they can be bonded at the same heating temperature with a press pressure of 0.001 MPa to 0.005 MPa and a press time of about 5 to 30 minutes. If a long time is required at a low temperature and low pressure, the sheets can be bonded in an oven or thermostatic bath under a load.

In this embodiment, the process may include a step of providing the incisions 71, 72, and 73 in the release sheet 3 and the base sheet 1. The method of forming the incisions 71, 72, and 73 in the tack paper 10 is not particularly limited, and for example, a Vic blade, a Pinnacle (registered trademark) blade, or a mold can be used, and machines such as laser light and a machining center can also be used. The incisions 71, 72, and 73 can be half-cut to any depth according to the thickness of the release sheet 3 and the base sheet 1. In the case of the storage label 5 shown in FIG. 4, the release sheet 3 of the tack paper 10 and 20 is half-cut in advance, and an adhesive layer 4 is provided on the base sheet 1 of the lower tack paper 20, and an arbitrary number of layers are stacked together to produce the storage label stack 100. In the case of the storage label 5 shown in FIG. 6, the base sheet 1 of the tack paper 10, 20 is half-cut in advance, and the adhesive layer 4 is provided on the base sheet 1 of the lower tack paper 20. The base sheet 1 is then partially removed along the cut 72, and any number of sheets are then stacked together to produce the storage label stack 100. The process of providing the cuts 71, 72, 73 can be performed, for example, between the first and second steps.

In this embodiment, the process may include a step of removing the base sheet 1 of the topmost tack paper 10 together with the adhesive layer 2 from the tack paper stack. This step may be performed after the third step, or may be performed on the topmost tack paper 10 when preparing the tack paper 10 in the first step. Alternatively, the process may include a printing step of applying a pattern, text, or other markings to convey product information to the topmost base sheet 1. In addition, the process may include a step of providing an adhesive-blocking layer 8 on the adhesive layer 2 as described above.

Although one embodiment of the method for manufacturing the storage label of the present invention has been described above, in the method for manufacturing the storage label of the present invention, the size of the tack paper does not necessarily have to be the same as the size of the storage label 5, and as shown in Figures 14(A) to 14(C), a tack paper having a size n times (n is an integer of 2 or more) the size of the storage label may be used. Figures 14(A) to 14(C) are schematic diagrams for explaining another example of the method for manufacturing the storage label laminate 100 of the present invention. First, as shown in Figure 14(A), the upper tack paper 10 and the lower tack paper 20 are prepared (first step) and have a size n times the size of the storage label 5, in which the base sheet 1, the adhesive layer 2, and the release sheet 3 consisting of the release layer 31 and the support sheet 32 are laminated in this order. Next, n adhesive layers 4 are provided on the base sheet 1 of the lower tack paper 20, which conform to the shape of the peripheral portion of the storage label 5 (second step). In FIG. 14(A), 20 adhesive layers 4 are provided in a U-shape so that one side of the storage label having a rectangular periphery consisting of two pairs of opposing sides becomes an opening. Next, the upper tack paper 10 and the lower tack paper 20 are overlapped with the adhesive layer 4 (third step). Similarly, any number of lower tack papers 20 are overlapped and stacked to form a tack paper stack 200, and then the tack paper stack 200 may be cut to the size of the storage label 5 using a known method such as a cutting machine to produce the storage label stack 100 (fourth step). In FIG. 14, a half cut is made in advance on the base sheet 1 of the lower tack paper 20, and after the adhesive layer 4 is provided on the base sheet 1 of the lower tack paper 20, the base sheet 1 is partially removed along the half cut.

Below, an example of the storage label laminate of the present invention will be described with reference to Figs. 14(A) to 14(C). Note that Figs. 14(A) to 14(C) are provided for reference purposes only regarding the manufacturing procedure for the storage label laminate of the present invention, and do not necessarily correspond in all respects to the description of the following example.

Example 1
Tack papers 10 and 20 (size: 545 mm x 394 mm, Avery Dennison BM0301) were prepared in which a base sheet 1 (PP 52 μm), an acrylic adhesive layer 2, and a release sheet 3 consisting of a release layer 31 (silicone) and a support sheet 32 (PET 30 μm) were laminated in this order. Next, as shown in FIG. 14 (A), a U-shaped adhesive layer (width 5 mm, thickness 6 μm) was formed vertically and horizontally 5 x 5 pieces using an adhesive layer 4 (heat sealant EH-A700 manufactured by Toyo Morton) on the base sheet 1 of the lower tack paper 20 so that one side of the storage label 5 (outer dimensions 105 mm x 77 mm) becomes an opening. Then, the upper tack paper 10 and the lower tack paper 20 were overlapped via the adhesive layer 4. Similarly, as shown in Fig. 14(B), five sheets of the lower tack paper 20 were stacked and bonded together by hot pressing (temperature 150°C, pressure 2 MPa, press time 5 seconds) to produce a tack paper laminate 200. Finally, as shown in Fig. 14(C), the tack paper laminate 200 was cut to the size of the storage label 5 using a cutter to produce the storage label 5 laminate 100 shown in Fig. 1. Note that Example 1 differs from the embodiment in Fig. 14 in that the base sheet 1 of the lower tack paper 20 was not half-cut or partially removed.

Example 2
A laminate 100 of storage labels 5 was produced in the same manner as in Example 1. However, half-cutting was performed in advance on the release sheets 3 of the tack papers 10 and 20, and the adhesive layer 4 was made to surround the entire peripheral portion of the storage labels 5, thereby producing the laminate of storage labels 5 shown in FIG.

Example 3
A laminate 100 of storage labels 5 was produced in the same manner as in Example 1. However, a half cut was made in advance on the base sheet 1 of the tack paper 20, and then an adhesive layer 4 was formed, and the base sheet 1 was partially removed along the half cut by scraping, and then the laminate 100 of storage labels 5 shown in FIG.

Example 4
A stack 100 of storage labels 5 was produced in the same manner as in Example 1. However, the release sheet 3 of the tack papers 10 and 20 was half-cut in advance, and the adhesive layer 4 was made U-shaped except for the region 53 on the opening side of the storage label 5, to produce the stack 100 of storage labels 5 shown in FIG.

Example 5
A laminate 100 of storage labels 5 was produced in the same manner as in Example 4. However, after a glue-blocking layer 8 was formed in advance between the release sheet 3 and the adhesive layer 2, a half cut was made in the release sheet 3, and the release sheet 3 was partially removed along the half cut by scraping, and then the tack papers 10 and 20 were superimposed to produce the laminate 100 of storage labels 5 shown in FIG.

In all of the above Examples 1 to 5, the storage labels 5 could be removed one by one, and the only release sheet 3 that was discarded was the release sheet 3 of the last tack paper 10.

REFERENCE SIGNS LIST 1 Base sheet 2 Adhesive layer 3 Release sheet 31 Release layer 32 Support sheet 4 Adhesive layer 5 Storage label 51 Opening 52 Storage section 6 Storage object 71, 72 73 Incision 8 Glue-blocking layer 10, 20 Tack paper 100 Storage label stack 200 Tack paper stack

Claims (12)

A stack of storage labels,
The laminate includes at least two or more tack papers in which a base sheet, a pressure-sensitive adhesive layer, and a release sheet composed of a release layer and a support sheet are laminated in this order,
A laminate in which the release sheet of one tack paper and the base sheet of the other tack paper are partially joined via an adhesive layer between two adjacent tack papers, thereby forming a storage section capable of storing an item to be stored. The laminate according to claim 1, wherein the tack paper in the outermost layer of the laminate does not include a base sheet or an adhesive layer, but includes only a release sheet. The laminate according to claim 1 or 2, wherein the adhesive layer is provided along the periphery of the tack paper in a shape that has a partial opening. The laminate according to claim 1 or 2, wherein the tack paper has a rectangular periphery, and the adhesive layer is provided on the periphery in a U-shape so that at least one side of the rectangle is an opening. The laminate according to claim 1 or 2, wherein the tack paper has a rectangular peripheral portion, the adhesive layer is provided in a square shape so as to surround the peripheral portion, and the release sheet has an opening formed by a slit through which an object can be placed. The laminate according to claim 1 or 2, wherein the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and an area is provided on the peripheral portion of the tack paper on the opening side where the base sheet is partially missing so that at least one side of the peripheral portion is an opening. The laminate according to claim 1 or 2, wherein the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and the release sheet is provided with a cut for partially removing the release sheet so that at least one side of the peripheral portion becomes an opening. The laminate according to claim 1 or 2, wherein the tack paper has a rectangular peripheral portion, the adhesive layer is provided on the peripheral portion in a U-shape or a V-shape, and the release sheet has an area where the release sheet is partially missing so that at least one side of the peripheral portion becomes an opening. A method for manufacturing a stack of storage labels, comprising the steps of:
A method for manufacturing a laminate, comprising: a first step of preparing at least two pieces of tack paper each having a base sheet, an adhesive layer, and a release sheet consisting of a release layer and a support sheet laminated in that order; a second step of providing an adhesive layer on the peripheral edge of the back surface of the release sheet of the tack paper or the front surface of the base sheet, or both; and a third step of stacking and bonding at least two pieces of the tack paper together to laminate the tack papers. The method for manufacturing the laminate according to claim 9 includes a first step of preparing at least two pieces of tack paper each having a size n times (n is an integer of 2 or more) the size of the storage label, a second step of providing n adhesive layers conforming to the shape of the peripheral portion of the storage label on the back surface of the release sheet of the tack paper or on the front surface of the base sheet or on both, a third step of stacking and bonding at least two pieces of tack paper together to form the tack paper laminate, and a fourth step of cutting the tack paper laminate to the size of the storage label. The method for manufacturing a laminate according to claim 9 or 10 further includes a step of providing a cut in either the base sheet or the release sheet for accommodating an object to be accommodated. The method for manufacturing a laminate according to claim 9 or 10 further includes the steps of providing a cut in either the base sheet or the release sheet for accommodating an object to be contained, and partially removing the base sheet or the release sheet along the cut.