JP2013028050A - 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 peeling agent layer 34 formed at an upper base material 31 to be peeled from a lower base material 15 is configured to include a single layer where peeling force due to difference of a formation area per unit area of at least an island peeling agent layer 34B of a peeling end and the other island peeling agent layer 34A is set to at least two levels from large to small from a peeling start end corresponding to a marked part 13 B to an area of a peeling end in a diagonal direction of the arrangement of island peeling agent layers 34A, 34B as a pattern arrangement of a plurality of the island peeling agent layers 34A, 34B.

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 composed of a surface base material and a back surface base material composed of a main slip and a separation slip, and a layer of a light peeling portion having different peeling force is formed on the back surface of the separation slip, on the light peeling portion. There has been proposed a delivery slip provided with a release layer in which heavy release portions are formed in a lattice shape, or provided with release layers in which heavy release portions and light release portions are alternately formed as a single layer.

JP 2011-131582 A

  However, the peeling layer of Patent Document 1 is also provided at the peripheral portion of the separation slip, and there is a problem that when the separation slip is peeled off, the termination portion is likely to curl due to separation from the heavy separation portion of the separation termination portion. is there.

  Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a releasable superposed sheet that effectively prevents the occurrence of curling at the peeling termination portion particularly when the base material to be peeled is peeled. .

  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 overlaid and a predetermined base material is peeled later, which is a peeling target, Upper base on which a single release agent layer is formed in which the release force due to the release agent in the region of the peeling end in the diagonal direction with respect to the peeling start end of the corner portion is at least two stages smaller than other regions And a lower base material in which an adhesive layer is formed and the release agent layer side of the upper base material is bonded.

In the inventions of claims 2 to 5, “the release agent layer has an arbitrary number of islands in the region of the peeling termination, and a small island from the peeling start end to the peeling termination region. The peeling force is at least two steps from large to small from the start end to the peeling end. ”
“The release agent layer has an arbitrary number of islands of the same size, a sparse pattern from the peel start end to the peel end region, and a peel pattern region portion that is a dense pattern. It is configured to have at least two stages,
“The release agent layer is formed on four sides by a release agent, and the two sides following the release termination region other than the two sides with respect to the release agent application width on the two sides on both sides from the release start end. The width of the coating is made small, and the peeling force is made from at least two stages of large to small from the peeling start end to the peeling end ”.
“The release agent layer has a first release agent layer formed on a side extending from the release start end to the release end region, and has a release force smaller than that of the first release agent layer at least in the release end region portion. The second release agent layer is formed so that the peeling force is at least two steps from large to small from the peeling start end to the peeling end ”.

  According to the first to third aspects of the present invention, the release agent layer formed on the upper base material that is peeled off from the lower base material has the release agent in the release start end at the corner and the release end region in the diagonal direction. The peeling force due to is formed as a single layer with at least two steps smaller than other regions, and the release agent layer is formed in any number of islands at the peeling end region, from the peeling start end. Let the area up to the end of the peeling be a small island shape and make the peeling force at least two steps from large to small from the peeling start end to the peeling end, or any number of islands of the same large size, from the peeling start end By forming a sparse pattern up to the separation termination region, and forming the separation termination region portion as a dense pattern, and making the separation force at least two steps from large to small, manufacturing efficiency is improved by forming a single layer. In the peeling end part of the upper substrate Since the peeling force by the corresponding release agent layer is smaller than the peeling start end, it is easy to peel off effectively, and curling is effectively prevented especially at the peeling termination part when peeling off the upper substrate. Is something that can be done.

  According to invention of Claim 4, 5, a release agent layer is formed in 4 sides with a release agent, and it peels other than the said 2 side with respect to the release agent application width | variety of both sides 2 sides from a peeling start end. The coating width of the two sides following the end region is made small and the release force is made at least two steps from large to small from the peeling start end to the peeling end, or the release agent layer is made to peel off the first release agent layer. Is formed on the side that continues from the region to the end of the peeling end, and a second release agent layer having a lower peeling force than the first release agent layer is formed at least in the region of the end of the peeling, and the peeling force is applied from the peeling start end to the peeling end. Even if the release agent layer is not made into an island shape, the production efficiency is improved by making it a single layer as described above, and the upper substrate The peeling force due to the release agent layer corresponding to the peeling termination part of the From becoming smaller as compared to the starting end, it is capable of preventing the curling of particularly peeling end portion at the time of peeling of the upper substrate so effectively that peeling becomes easy to be easily peeled off.

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 release agent layers of a releasable superposition sheet concerning the present invention. It is a composition conceptual diagram (2) of the other release agent layer 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 the present invention, a large peel force means that a strong force is required to peel off the adhesive force strongly, and a small peel force means that the adhesive force is relatively weaker than the state where the adhesive force is large, The state where it is easy to peel off is shown.

  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 base material 15, and an adhesive layer that is an adhesive material layer is formed on the medium layer 19 except for a desizing part 20 </ b> A corresponding to a notation part to be described below as a start of peeling. 20 is formed. Here, the adhesive layer 20 is formed of an aqueous emulsion adhesive. In addition, the adhesive layer is not limited to this, and other adhesives (adhesion due to solidification) and pressure-sensitive adhesives (while maintaining viscosity), such as natural latex mixed with fine particulate fillers such as starch and silica Adhesion) may be used. In particular, when an aqueous emulsion adhesive is used, the medium layer 19 can prevent moisture from penetrating into 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 20, the medium layer 19 is unnecessary.

  The sticker 12 includes, for example, an entry field such as “sticker”, “sender”, “destination” on the surface (upper surface of the sticker) 21 of a high-quality paper 70 kg and a barcode 12A unique to each delivery slip. And the first information layer 22 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 20 in the corresponding region (half) of the lower base material 15.

  The delivery slip 13 is, for example, on the surface of the upper base material 31 (upper surface of the drawing) 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 32 such as a notation 13B used as a mark for starting peeling are printed. In addition, in the formation of the adhesive material layer 20, the case where the desizing part 20A corresponding to the notation part 13B is provided as a peeling guide at the peeling start end is shown. It is good also as a weak adhesion part not only 20A. Moreover, it is good also as a structure which does not use the desizing part 20A or the weak adhesion part by making the corner | angular part front end of a peeling start end into a notch. In the entry column, writing or a printer (thermal, ink jet, non-impact printer) is used. A shrink layer 33 is formed on the back surface (lower surface in the drawing) of the upper base material 31.

  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.

  Further, a release agent layer 34 is formed on the surface of the shrink layer 33. For the release agent layer 34, for example, a general release varnish (which may be an ultraviolet curable type) can be used as the release agent. Further, the release agent layer 34 is a pattern arrangement of a plurality of island-like release agent layers, and per unit area from the release start end corresponding to the notation portion 13B to the diagonal release end region. It is formed of a single layer in which the peeling force due to the difference in the formation area is set to at least two stages from large to small.

  Specifically, as shown in FIG. 1C, the notation 13B serves as a peeling start end, and the diagonal direction from the peeling start end is a peeling direction Toff. Then, an arbitrary number of large island-shaped release agent layers 34B are formed in a pattern at the end of the release, and a small island release agent layer 34A is formed in a pattern from other areas starting from the start of the release. The large release agent layer 34A and the large island release agent layer 34B have a difference in formation area per unit area. That is, while the large island-shaped release agent layer 34B per unit area has a small peeling force, the large island-like release agent layer 34A has a small island-like release agent layer 34A. The release force is greater than that required in the region of the release agent layer 34B. The individual shapes of the small island release agent layer 34A and the large island release agent layer 34B are not questioned.

  The delivery slip 13 is in a form in which the release agent layer 34 side is adhered onto the adhesive layer 20 in the corresponding region of the lower base material 15 (the remaining half of the pasting slip region).

    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. An adhesive layer 20 is formed on the medium layer 19 by applying, for example, an aqueous emulsion adhesive.

  Subsequently, in FIG. 2B, a first information layer 22 is formed by printing on a sticker base material 21 to be the sticker 12. On the other hand, the 2nd information layer 32 is formed by printing on the surface of the upper base material 31 used as the delivery form 13. FIG. 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 substrate 31 to a thickness of 44 μm, and the shrink layer 33 is formed by irradiating and curing the ultraviolet rays. Further, for example, an ultraviolet curable release varnish is formed on the surface of the shrinkable layer 33, and a small island release agent layer 34A and a large island release agent as shown in FIG. The release agent layer 34 is formed by coating with the pattern of the layer 34B and curing by irradiation with ultraviolet rays.

  Then, the release agent layer 34 formed on the upper base material 31 is brought into contact with and adhered to the adhesive layer 20 formed on the lower base material 15, and the adhesive sheet base material 21 (adhesive sheet 12) is adhered. Thus, the delivery slip 11 in which the sticker slip 12 and the delivery slip 13 shown in FIG. 1 are on the same plane is produced.

    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 separation end while being lifted with the portion of the notation 13B as the separation start end. In this case, the delivery slip 13 is one in which the upper substrate 31, the shrink layer 33, and the release agent layer 34 are integrated. In this state, the delivery slip 13 is peeled off with a large peeling force in relation to the small island release agent layer 34 </ b> A with respect to the adhesive material layer 20 on the lower base material 15.

  Then, as shown in FIG. 3B, when peeling progresses from the peeling start end of the delivery slip 13, the small island-shaped release agent layer 34B is reduced from the peeling due to the large peeling force of the small island-like release agent layer 34A. It becomes peeling by the peeling force. That is, since the peeling force by the large island-like release agent layer 34B is smaller than the peeling force by the small island-like release agent layer 34A, it is not necessary to peel off the delivery slip 13 toward the peeling end while being bent so much. Continue until complete stripping at the end of stripping. 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.

  In this way, at least the release force of the release agent layer 34B at the end of the release is set to be smaller than the release force due to the difference in the formation area per unit area from the release agent layer 34A in the other regions, so that the release is performed. It is possible to prevent the curling from occurring at the peeling end portion when the slip 13 is peeled off. Further, by using the same release agent as the entire release agent layer 34 as a single layer, it can be formed in one step, and manufacturing efficiency is improved in production compared to the invention described in Patent Document 1 described above. It is something that can be done. Furthermore, while the invention described in Patent Document 1 uses two types of release agents for the release layer, a light release portion and a heavy release portion, the invention of the above embodiment may be a single type of release agent. Therefore, it is possible to improve the production efficiency without requiring at least two application steps of the release agent in producing the delivery slip.

  Next, in FIG.4 and FIG.5, the conceptual diagram of a structure of the other release agent layer of the releasable superposition sheet which concerns on this invention is shown. FIG. 4A shows that each island-shaped release agent layer 34C has the same size, and a sparse pattern 41 is formed from the peeling start end to the peeling end region in the peeling direction Toff, and the peeling termination region portion is a dense pattern 42. The peeling force is divided into two stages from large to small from the peeling start end to the peeling end.

  FIG. 4B shows a strip-like island release agent layer 34D in the peeling termination region shown in FIG. 4A, and each island-like release agent layer 34C is shown in FIG. In the same manner as described above, the peeling force is divided into two stages from large to small from the peeling start end to the peeling end.

  In this way, the difference in formation area per unit area of the release agent layer from the peeling start end to the peeling end is set by the pattern density of the same size as shown in FIG. 4 (A), and FIG. 4 (B). As described above, the curl generation at the peeling end portion at the time of peeling of the delivery slip 13 to be peeled can also be prevented by setting the area portion at the peeling end to be solid.

  Next, FIG. 5 (A) shows a stripping agent layer 51 formed in strips on four sides with a stripping agent, and the stripping agent layer 51A on both sides from the stripping start end is stripping agent application width a. And the release agent layer 51B on the two sides following the release termination region other than the two sides is formed as a release agent application width b smaller than the application width a of the release agent layer 51A (a> b). Is done. For example, when the dimensions of the delivery slip 13 are 100 mm wide × 92 mm long, the application width a of the release agent layer 51A is 5 mm, and the application width b of the release agent layer 51B is 3 mm. Then, the release agent layer 52 having a release force smaller than the release force of the release agent layer 51 (51A, 51B) is formed in a region including the release termination region inside the release agent layer 51. The peeling force is divided into two stages from large to small from the start end to the peeling end.

  In this case, as the formation of the release agent layers 51 and 52, the same release agent is used and the application area from the release start end to the release end region is varied to increase the release force per formation area from 2 to 2. It is what makes it a stage. In addition, using the same release agent, the release agent layer 51 is formed in a 30 percent dot pattern by a method similar to screen printing, and the release agent layer 52 is formed in a 50 percent dot shape, for example, similar to screen printing. By forming by the technique, the peeling force in the region from the peeling start end to the peeling end is made two steps from large to small by changing the coating density together with the coating area. Forming the release agent layers 51 and 52 in a dot pattern can facilitate adjustment of the peeling force. In addition, the ratio of the said halftone dot is suitably set according to the kind of release agent. Further, the same applies by forming the release agent layer 51 with a release agent having a high release force and forming the release agent layer 52 with a release agent having a low release force.

  In FIG. 5B, the release agent layer is formed on the four sides excluding the region at the end of release with the same width in a strip shape by the release agent. The first release agent layer 51A is formed, and the second release agent layer 52A having a lower release force than the first release agent layer 51A is formed on the inner side of the first release agent layer 51 and the region at the end of the release. The peeling force is at least two steps from large to small from the end to the peeling end.

  In this case, as the formation of the release agent layers 51A, 52, and 52A, the release agent layer 51A is formed in the form of a 30 percent dot in the same manner as in screen printing, using the same release agent, and the release agent layer 52, 52A is formed in the form of 50 percent halftone dots by, for example, the same method as that of screen printing, and the peeling force is made to be two steps from large to small by varying the coating density. The same applies to the case where the release agent layer 51A is formed of a release agent having a high release force and the release agent layers 52 and 52A are formed of a release agent having a low release force.

  As shown in FIGS. 5 (A) and 5 (B), the peeling force is larger in the release agent layer 51 on the peeling start end side than the area part at the peeling end, and the peeling force is small in the area part at the peeling end. When peeling off, it becomes possible to easily peel off at the end thereof, and curling at the peeling end portion at the time of peeling off the delivery slip 13 to be peeled can be prevented. When the same release agent is used with the release agent layers 51 and 52 as a single layer, the release agent layers 51 and 52 can be formed in one step, and one type of release agent may be used. In comparison, the production efficiency can be improved.

  In each of the above embodiments, the case where the peeling force of each release agent layer is made to have two stages from the peeling start end to the peeling end is shown, but the peeling force may be adjusted in more stages. It is.

  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 Medium layer 20 Adhesive layer 21 Sticking slip base material 22 1st information layer 31 Upper base material 32 2nd information layer 33 Shrinkage | contraction Layer 34, 51, 52 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,
Single-layer peeling that is a peeling target and has at least two stages of peeling force due to the release agent in the region of the peeling end in the diagonal direction with respect to the peeling start end of any corner, at least smaller than other regions An upper substrate on which an agent layer is formed;
A lower base material in which an adhesive layer is formed and the release agent layer side of the upper base material is bonded;
A releasable overlay sheet characterized by comprising:   The releasable overlay sheet according to claim 1, wherein the release agent layer has an arbitrary number of island-shaped regions at the end of the peeling, and a small island shape from the peeling start end to the peeling end region. The releasable superposed sheet is characterized in that the peel force is at least two steps from large to small from the peel start end to the peel end.   2. The releasable overlay sheet according to claim 1, wherein the release agent layer has an arbitrary number of islands having the same size, and has a sparse pattern from the release start end to the release end region. A releasable superposed sheet characterized in that the area portion is formed into a dense pattern, and the peel force is set to at least two stages from large to small.   The releasable overlay sheet according to claim 1, wherein the release agent layer is formed on four sides by a release agent, with respect to the release agent application width on both sides from the release start end. The releasable superposition characterized in that the application width of the two sides following the exfoliation end region other than the two sides is made small, and the exfoliation force is made at least two steps from large to small from the exfoliation start end to the exfoliation end. Sheet.   2. The releasable overlay sheet according to claim 1, wherein the release agent layer has a first release agent layer formed on a side extending from the release start end to the release end region, and at least the release end layer. Re-peeling characterized in that a second release agent layer having a smaller release force than the first release agent layer is formed in the region portion, and the release force is divided into at least two steps from large to small from the peeling start end to the peeling end. Sex sheet.

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