JP2013028049A - Re-peelable overlapped sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of curls at a peeling end part in peeling of a peeling base material, regarding a re-peelable overlapped sheet where a plurality of base materials are overlapped and then a predetermined base material is peeled.SOLUTION: A marked part 13B for indicating a peeling start part is formed on a surface of an upper base material 41, an area corresponding to the marked part 13B, on a surface of a lower base material 15 is made to be a non-paste part 22C, a sticking material layer (adhesive layers 22A, 22B) where adhesive force due to an adhesive agent is divided into at least two levels from strong to weak is formed from the peeling start end of the non-paste part 22C in a peeling direction Toff toward the area of a peeling end in a diagonal direction, the peeling agent layer side of the upper base material is adhered thereon, and in the adhesive layers, the coating width b of the adhesive layer 22B of two sides continuous with the area of the peeling end except two sides is configured to be smaller in comparison with the coating width a of the adhesive layer 22A of the two sides at both sides from the peeling start end out of four sides except the non-paste part 22C.

Description

  The present invention relates to a releasable superposed sheet in which a plurality of base materials are superposed and a predetermined superposed surface is peeled later.

  In recent years, for example, when delivering a delivery item to a delivery destination, it has become common to affix a delivery slip to the delivery item. As shown, the delivery slip can be easily separated by a removable adhesive, usually in an adhesive state. Such a delivery slip is desired to prevent curling of the peeled delivery slip, and in particular, to prevent curling at the end of peeling and improve handling.

  Conventionally, as a releasable superposed sheet, there are those proposed in the following patent documents. Patent Document 1 is a pressure-sensitive adhesive sheet in which a printed layer is formed on a protective sheet via a pressure-sensitive adhesive layer, and a coating sheet is provided on the printed layer, and the pressure-sensitive adhesive layer has a contour corresponding to the outer shape of the printed layer. A continuous belt-like pressure-sensitive adhesive layer having a width of about 3 mm is formed along the surface of the belt-like pressure-sensitive adhesive layer, and a lattice-like pressure-sensitive adhesive layer having a discontinuous portion is formed inside the belt-like pressure-sensitive adhesive layer. The adhesive strength is weakened as a whole without lowering.

  In addition, Patent Document 2 discloses a label in which a strong adhesive portion is formed by applying an adhesive to the entire surface of each predetermined width at both ends in the longitudinal direction on the back surface of the top sheet, and a matrix is formed in a region other than the strong adhesive portion. It has a structure in which a weak adhesive portion with an adhesive applied thereon is formed and a release paper is adhered.

JP 2000-003134 A JP 2008-039837 A

    The releasable layered sheets including the above-mentioned Patent Documents 1 and 2 have a problem that the peeled base material is curled, particularly easily curled at the end of peeling, and is inconvenient for subsequent handling. For example, in the case of the above-mentioned Patent Document 1, the strip-like pressure-sensitive adhesive layer at the peripheral edge of the printed layer has stronger adhesive strength than the grid-like pressure-sensitive adhesive layer, and the peeling end portion after peeling due to the adhesive strength at the peeling end. It is easy to curl. Further, even when the technique described in Patent Document 2 is applied to the releasable laminated sheet in which the pressure-sensitive adhesive layer is uniformly formed on the entire surface, the strong adhesive portion is formed at least at the end of peeling. And it is the same that curl is likely to occur at the peeling end portion.

  Then, this invention is made | formed in view of the said subject, and it aims at providing the releasable superimposition sheet | seat which prevents the curl generation | occurrence | production in the peeling termination | terminus part especially at the time of peeling of the base material to peel.

  In order to solve the above-mentioned problem, in the invention of claim 1, a releasable superposed sheet in which a plurality of base materials are superimposed and a predetermined base material is peeled later, which is a peeling target and peeled on the back surface The upper base material on which the agent layer is formed, and the adhesive force by the adhesive is made at least two steps from strong to weak from the peeling start end of one corner of the upper base to the diagonal peeling end region. And a lower base material on which the release agent layer side of the upper base material is bonded.

In invention of Claims 2-5, "The said adhesive material layer is formed in 4 sides with an adhesive agent, and is other than the said 2 sides with respect to the adhesive application width | variety of 2 sides on both sides from the said peeling start end. The application width of the two sides following the region of the peeling end is made small, and the adhesive force is at least two steps from strong to weak from the peeling start end to the peeling end.
“The adhesive layer is formed by forming a first adhesive layer on a side that extends from the peeling start end to the peeling termination region, and a second adhesive layer having a lower adhesive strength than the first adhesive layer in the peeling termination region. An adhesive layer is formed, and the adhesive force is at least two steps from strong to weak from the peeling start end to the peeling end ”.
“The adhesive layer has an adhesive layer of an arbitrary number of islands, a dense pattern is formed from the peeling start end to the peeling termination region, and the peeling termination region portion is the same large or small sparse pattern The adhesive strength is at least two steps from strong to weak from the peeling start end to the peeling end ”.
“The adhesive material layer has an adhesive layer of an arbitrary number of the same large islands, the first adhesive layer is formed from the peeling start end to the peeling termination region, and the peeling termination region portion is a first portion. The second adhesive layer having a smaller adhesive strength than that of the adhesive layer is used, and the adhesive strength is at least two steps from strong to weak from the peeling start end to the peeling end ”.

  According to the first to third aspects of the present invention, the adhesive force by the adhesive is set to at least two steps from strong to weak from the peeling start end of any corner of the upper base material to the region of the diagonal peeling end. An adhesive layer is formed and the release agent layer side of the upper base material is adhered, and the adhesive layer corresponds to the adhesive application width of 2 sides on both sides from the peeling start end among the 4 sides. The application width of the two sides following the separation termination region other than the side is made small, or the first adhesive layer is formed on the side continuing from the separation start end to the separation termination region, and the first adhesion is applied to the separation termination region portion. By forming the second adhesive layer having a lower adhesive strength than the layer, the adhesive strength of the peeling termination portion is smaller than the other adhesive strength, so that the peeling termination portion at the time of peeling of the substrate to be peeled off Can prevent curling.

  According to the fourth and fifth aspects of the present invention, the adhesive force by the adhesive is made to be at least two steps from strong to weak from the peeling start end of any corner of the upper base material to the region of the diagonal peeling end. An adhesive layer is formed and the release agent layer side of the upper base material is adhered, and the adhesive layer is formed in an arbitrary number of islands to form a dense pattern from the peeling start end to the peeling end region, and peeling The end region is formed in the same large or small sparse pattern, or the adhesive layer is formed into an arbitrary number of the same large island shape, and the first adhesive layer is formed from the peeling start end to the peeling end region, and peeling is performed. Even if the adhesive layer is formed in a predetermined number of islands by forming the terminal region with the second adhesive layer having a lower adhesive strength than the first adhesive layer, the peeling is performed in the same manner as described above. Since the adhesive strength at the end is smaller than the other adhesive strength, It is capable of preventing the curling of a release end portion at the time of peeling the base material.

It is a lineblock diagram of a releasable superposition sheet concerning the present invention. It is a preparation conceptual diagram of the releasable superposition sheet concerning FIG. It is a conceptual diagram of the state of the re-peeling in the releasable superposition sheet | seat which concerns on FIG. It is a composition conceptual diagram (1) of other pasting material layers of a releasable superposition sheet concerning the present invention. It is a composition conceptual diagram (2) of other pasting material layers of the releasable superposition sheet concerning the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, dimensions are ignored for easy understanding of the invention. Moreover, although this embodiment shows about a delivery slip as a releasable superposition sheet, it is not restricted to this, It is applicable to all the things which curl prevention of the base material of the peeling target in a superposition sheet is desired. .

  In FIG. 1, the block diagram of the releasable lamination sheet which concerns on this invention is shown. In FIGS. 1A and 1B, a delivery slip 11 as an example of a releasable superposed sheet is composed of a sticker slip 12 and a delivery slip 13 formed on the same plane, and a delivery slip 13 is indicated by a separation line 14. Is provided so as to be re-peelable.

  In the delivery slip 11, for example, an adhesive layer 16 is formed on the back surface (lower surface of the drawing) of the lower base material 15 that is a common base material for the sticker slip 12 and the delivery slip 13, and a release base material 17 is provided. . The adhesive layer 16 is for attaching the delivery slip 11 to the target article with strong adhesion, and may be either an adhesive or an adhesive. And the slit 18 is formed in the said peeling base material 17 so that it may peel easily later.

  A medium layer 19 is formed on the lower substrate 15. The medium layer 19 is formed of general medium containing titanium oxide or the like. Medium is available for liquid ink and paste ink, both of which are added to the ink to adjust the ink concentration and gloss, but when used alone, it has waterproof properties . In that sense, it is not limited to medium, and any material having waterproof performance such as varnish or fluorine-based coating agent may be used. If a water-based adhesive is not used for the adhesive layer 21, the medium layer 19 is unnecessary.

  On the lower base material 15 on which the medium layer 19 is formed, a sticker slip area 20A where the sticker slip 12 is located and a delivery slip area 20B where the delivery slip 13 is located. An adhesive layer 21 is formed on the medium layer 19 in the sticker slip region 20A, and an adhesive layer 22 constituting an adhesive material layer is formed on the medium layer 19 in the delivery slip region 20B. As shown in FIG. 1C, the adhesive layer 22 has an area corresponding to a notation part (13B) formed on a delivery slip 13 to be described later as a desizing part 22C, and the part of the desizing part 22C is It becomes the peeling start end of the delivery slip 13 and its diagonal direction is the peeling direction Toff.

  The adhesive layer 22 is formed in a band shape with an adhesive on four sides excluding the desizing part 22C, and an adhesive layer 22A that is two sides on both sides from the peeling start end is formed with an adhesive application width a. At the same time, the adhesive layer 22B on the two sides following the peeling termination region other than the two sides is formed as an adhesive application width b smaller than the application width a of the adhesive layer 22A (a> b). For example, when the size of the delivery slip 13 is 100 mm wide × 92 mm long, the application width a of the adhesive layer 22A is 5 mm, and the application width b of the adhesive layer 22B is 3 mm. That is, the adhesive layer 22 is composed of an adhesive layer 22A formed with a coating width a and an adhesive layer 22B formed with a coating width b. The layer 22A is stronger than the adhesive layer 22B in the peeling termination region, and causes the adhesive force by the adhesive to be two steps from strong to weak from the peeling start end to the diagonal peeling termination region.

  Here, for example, an aqueous emulsion adhesive is used for the adhesive layers 21 and 22, and the adhesive layers 21 and 22 are formed in a 50 percent dot pattern. Then, a low density adhesive layer 23 is formed inside the adhesive layer 22, for example, an aqueous emulsion adhesive is formed in a 30 percent dot pattern. In this sense, the adhesive layer 22 becomes a high-density adhesive layer with respect to the low-density adhesive layer 23. At least the adhesive strength can be easily adjusted by forming the adhesive layers 22 and 23 with a dot-like adhesive. The halftone dot ratio is appropriately set according to the type of adhesive.

  The low-density adhesive layer 23 is not a necessary requirement since the delivery slip 13 is adhered by the adhesive layer 22 at the periphery thereof, but the step is eliminated by bringing the delivery slip 13 into close contact with weak adhesion. It is possible to prevent the printing from being affected. The adhesive layers 21 and 22 and the low-density adhesive layer 23 are not limited to water-based emulsion adhesives, and other adhesives such as natural latex mixed with fine particulate fillers such as starch and silica (adhesion by solidification). Or pressure-sensitive adhesive (adhesion while maintaining viscosity) may be used.

  The sticker 12 includes, for example, an entry field such as “sticker”, “sender”, “destination” on the surface (upper surface of the drawing) 31 of a high-quality paper 70 kg and a barcode 12A unique to each delivery slip. And the first information layer 32 such as transmission contents are printed. In the entry field, it is written by writing or by a printer (thermal, inkjet, non-impact printer). The sticker 12 is in a form adhered on the adhesive layer 21 formed in the sticker region 20 </ b> A of the lower base material 15.

  The delivery slip 13 is, for example, on the surface (upper surface of the drawing) of the upper base material 41 of high-quality paper 70 Kg, as with the sticker slip 12, as “printing slip”, “sender”, “destination” as the printing surface or writing surface. ”And the like, a barcode 13A unique to each delivery slip, and a second information layer 42 such as a notation portion 13B used as a mark for starting peeling. In addition, the description part 13B includes the case where the said part is cut and represented. In the entry field, writing or a printer (thermal, ink jet, non-impact printer) is used.

  A shrink layer 43 such as an ultraviolet curable medium is formed on the back surface (lower surface in the drawing) of the upper base material 41. The shrink layer 33 has a shrink property upon curing to prevent curling of the middle portion of the delivery slip 13 and is an upper substrate when an aqueous emulsion adhesive is used for the adhesive layer 22 and the low density adhesive layer 23. It is possible to prevent the penetration of moisture into 41. The shrink layer 43 is not a particularly necessary requirement in the present invention.

  Then, a release agent layer 44 is formed on the surface of the shrink layer 43. For the release agent layer 44, for example, a general release varnish can be used as a release agent. The peeling varnish may be an ultraviolet curable type. The delivery form 13 has a form in which the release agent layer 34 side is adhered onto the adhesive layer 22 and the low density adhesive layer 23 in the delivery form region 20B of the lower base material 15.

  Here, FIG. 2 shows a production conceptual diagram of the releasable superposed sheet according to FIG. In FIG. 2A, first, the adhesive layer 16 is applied to the back surface of the lower base material 15 and the release paper 17 is adhered to form the slits 18. Then, a medium layer 19 is formed on the surface of the lower substrate 15 by applying, for example, ultraviolet curable medium and irradiating with ultraviolet rays. On this medium layer 19, except for the desizing part 22C on the delivery slip area 20B, for example, an aqueous emulsion adhesive is applied in a 50 percent dot pattern by the same method as for screen printing, for example, and the adhesive layer 21 and the adhesive layer 22 (adhesive layers 22A and 22B) is formed, and the low-density adhesive layer 23 is formed on the inner side of the adhesive layer 22 by, for example, applying a 30-percent halftone dot pattern by a method similar to screen printing. The order of forming the adhesive layer 21 and the adhesive layer 22 (adhesive layers 22A and 22B) and the formation of the low density adhesive layer 23 are not limited.

  Subsequently, in FIG. 2B, a first information layer 32 is formed by printing on a sticker substrate 31 that becomes the sticker 12. On the other hand, a second information layer 42 such as a notation portion 13B to be used as a mark for starting peeling is formed on the surface of the upper base material 41 serving as the delivery slip 13 by printing. That is, the contents and the notation portion 13 </ b> B that are used for the delivery slip notation and delivery slip notation required for delivery are printed.

  Subsequently, an ultraviolet curable medium is applied to the back surface of the upper base material 41, and the shrink layer 43 is formed by irradiating and curing the ultraviolet rays. Further, for example, an ultraviolet curable release varnish is applied on the surface of the shrink layer 43, and the release agent layer 44 is formed by irradiating with ultraviolet rays and curing.

  Then, the release agent layer 44 formed on the upper base material 41 is brought into contact with and adhered to the adhesive layers 22A and 22B formed on the lower base material 15, and the sticker base material 31 (the sticker 12). Is adhered on the adhesive layer 21 to produce the delivery slip 11 in which the sticker slip 12 and the delivery slip 13 shown in FIG.

  FIG. 3 is a conceptual diagram showing a re-peeling state in the re-peelable superposed sheet according to FIG. In FIG. 3A, the delivery slip 13 is peeled from the lower base material 15 toward the diagonal peeling end while being lifted with the portion of the paste removing part 22C corresponding to the notation part (13B) as the peeling start end. Go. In this case, the delivery form 13 is one in which the upper substrate 41, the shrink layer 43, and the release agent layer 44 are integrated. In this state, the delivery slip 13 is mainly peeled off from the adhesive force by the adhesive layer 22A bonded at the periphery of the peeling start end side of the back surface (peeling layer 44).

  Then, as shown in FIG. 3B, when peeling progresses from the peeling start end of the delivery slip 13, the peeling from the adhesive layer 22A changes to the peeling from the adhesive layer 22B. That is, since the adhesive force of the adhesive layer 22B formed with an application width b smaller than the adhesive application width a of the adhesive layer 22A is weak, it is necessary to peel off the delivery slip 13 while bending it to the end of peeling. Is continued until complete peeling at the end of peeling. As a result, peeling with less bending is possible even at the corner portion at the peeling end portion of the peeled delivery slip 13, and curling at this portion can be prevented.

  As described above, at least the adhesive layer 22B at the peeling end portion has a lower adhesive strength than the adhesive layer 22A due to the difference in the adhesive application area, thereby causing the curl at the peeling end portion when peeling the delivery slip 13 to be peeled off. Can be prevented.

  Next, in FIG.4 and FIG.5, the structure conceptual diagram of the other adhesive material layer of the releasable superimposition sheet | seat based on this invention is shown. Here, the form of the adhesive material layer formed on the lower base material 15 will be described, and the adhesive layer 21 formed on the adhesive sheet region 20A is the same as described above.

  In FIG. 4, the adhesive layer constituting the adhesive material layer is formed by forming the first adhesive layer 22 </ b> A with the same application width on the side extending from the peeling start end to the peeling end region excluding the desizing portion 13 </ b> B. A second adhesive layer having a lower adhesive strength than that of the first adhesive layer is formed in the terminal region, and the adhesive strength is divided into two steps from strong to weak from the peel start end to the peel end.

  In this case, the first adhesive layer 22A is formed, for example, by a water-based emulsion adhesive in a 50 percent dot pattern, and the second adhesive layer 23A is formed, for example, by an aqueous emulsion adhesive in a 30 percent dot shape. In this embodiment, since the low density adhesive layer 23 is also formed in the same manner as described above, the low density adhesive layer 23 and the second adhesive layer 23A can be formed at the same time.

  In the embodiment of FIG. 4 as well, curling occurs at the peeling end portion when peeling the delivery slip 13 to be peeled by making the adhesive force of the adhesive layer 23A at least at the peeling end portion smaller than the adhesive force of the adhesive layer 22A. Can be prevented.

  Then, although the form of the adhesive material layer shown in FIG. 5 is an adhesive layer formed in an arbitrary number of island shapes, the shape is not questioned. FIG. 5A shows that the adhesive layer 24A has a predetermined large island shape and is formed in a dense pattern from the peel start end to the peel end region in the peel direction Toff excluding the desizing portion 22C, and the peel end region portion is the same. It is formed in a large sparse pattern, and the adhesive strength is divided into two steps from strong to weak from the peeling start end to the peeling end. This adhesive layer 24A is formed, for example, in the form of a 50 percent dot with an aqueous emulsion adhesive.

  FIG. 5B shows that the adhesive layer 24A has a predetermined large island shape and is formed in a dense pattern from the peel start end to the peel end region in the peel direction Toff excluding the desizing portion 22C, and the peel end region portion is optional. A plurality of small sparse pattern adhesive layers 24B are formed, and the adhesive strength is made to be two steps from strong to weak from the peel start end to the peel end. The adhesive layers 24A and 24B are formed, for example, in the form of 50 percent dots by using an aqueous emulsion adhesive.

  In FIG. 5C, the adhesive layer is formed in the same pattern with the same large island shape, and the first adhesive layer 24A is formed from the peeling start end to the peeling end region in the peeling direction Toff excluding the desizing portion 22C. The terminal region is formed by the second adhesive layer 24C having a lower adhesive force than the first adhesive layer 24A, and the adhesive force is divided into two steps from strong to weak from the peel start end to the peel end. The first adhesive layer 24A is formed, for example, in the form of a 50-percent halftone dot using an aqueous emulsion adhesive, and the second adhesive layer 24C is formed, for example, in the form of a 30-percent halftone dot using an aqueous emulsion adhesive.

  Thus, even when the adhesive layer is formed in a predetermined number of islands, as shown in FIGS. 5A and 5B, at least the adhesive layer at the peeling termination portion is connected to the adhesive layer of the other portion. By reducing the adhesive force by the total difference in the adhesive application area, it is possible to prevent the occurrence of curling at the peeling end portion when peeling the delivery slip 13 to be peeled off. As described above, at least the adhesive force of the adhesive layer 24C at the peeling end portion is made smaller than the adhesive force of the adhesive layer 24A at other portions, so that the curl is generated at the peeling end portion when the delivery slip 13 to be peeled is peeled off. It can be prevented.

  In each of the above-described embodiments, the case where the adhesive force is made in two stages from the peeling start end to the peeling end is shown, but the adhesive force may be adjusted in more stages.

  Moreover, in each said embodiment, although the case where the desizing part 20A corresponding to the description part 13B was provided as a peeling guide of a peeling start end was shown, as long as the peeling start end is intended, it will be restricted to the desizing part 20A. It is good also as a weak adhesion part. Moreover, it is good also as a structure which does not use the desizing part 20A or a weak adhesion part by making the corner | angular part front end of a peeling start end into a notch as mentioned above.

  The releasable laminated sheet of the present invention can be used for a multilayer sheet in which a plurality of substrates are bonded so as to be removable.

DESCRIPTION OF SYMBOLS 11 Delivery slip 12 Sticking slip 13 Delivery slip 14 Separation line 15 Lower base material 16 Adhesive layer 17 Peeling base material 19 Media layer 21,22 Adhesive layer 23 Low density adhesive layer 24A Large pattern adhesive layer 24B Small pattern adhesive layer 24C Large pattern low Density adhesive layer 31 Adhesive slip base material 32 First information layer 41 Upper substrate 42 Second information layer 43 Shrink layer 44 Release agent layer

Claims (5)

A releasable superposed sheet in which a plurality of base materials are superimposed and a predetermined base material is peeled later,
An upper substrate that is a peeling target and has a release agent layer formed on the back surface;
A bonding material layer is formed in which the adhesive strength of the adhesive is at least two steps, from strong to weak, from the peeling start end of any corner of the upper base material to the diagonal peeling end region. A lower substrate to which the release agent layer side of the substrate is adhered,
A releasable overlay sheet characterized by comprising:   The releasable overlay sheet according to claim 1, wherein the adhesive material layer is formed on four sides by an adhesive, with respect to the adhesive application width on both sides from the peeling start end. The re-peeling layer is characterized in that the application width of the two sides following the exfoliation termination region other than the two sides is made small and the adhesive strength is made at least two steps from strong to weak from the exfoliation start end to the exfoliation end. Matching sheet.   The releasable overlay sheet according to claim 1, wherein the adhesive material layer has a first adhesive layer formed on a side extending from the peeling start end to the peeling termination region, and the peeling termination region. A second adhesive layer having a lower adhesive strength than the first adhesive layer is formed on the portion, and the adhesive strength is at least two steps from strong to weak from the peeling start end to the peeling end. Sheet.   The releasable overlay sheet according to claim 1, wherein the adhesive material layer has an adhesive layer of an arbitrary number of islands and has a dense pattern formed from the peel start end to the peel end region, A releasable superposed sheet, wherein the peeling termination region is formed in the same large or small sparse pattern, and the adhesive strength is at least two steps from strong to weak from the peeling start end to the peeling end.   2. The releasable superposed sheet according to claim 1, wherein the adhesive material layer has an adhesive layer of an arbitrary number of islands having the same size, and the first adhesion is performed from the peeling start end to the peeling termination region. Forming a layer portion, and forming the region of the peeling end with a second adhesive layer having a lower adhesive strength than the first adhesive layer, and causing the adhesive strength to be at least two steps from strong to weak from the peeling start end to the peeling end. A releasable overlay sheet characterized by that.

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