JP2013010224A - Repeelable laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repeelable laminated sheet having a plurality of base materials laminated so that a prescribed base material can be peeled off later, preventing occurrence of curling when peeling off the base material of the side to be peeled off.SOLUTION: In a delivery slip 11, an ultraviolet curable type medium layer 33 as an ultraviolet curable type contraction layer and a release varnish 34 as a release agent layer are formed one after another on the back of an upper base material 31 the front of which is used as a printing surface or a writing surface to be a delivery tag 13. The resultant upper base material is then adhered, in the release agent layer 34 side, to an adhesive layer 20 formed on a lower base material 15 via a medium layer 19, so that the delivery tag 13 can be peeled from the adhesive layer 20 on the lower base material 15 together with the ultraviolet curable type medium layer 33 and the release varnish 34.

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 or a sheet having a structure to be peeled off after a postcard or the like is desired to improve the handleability without curling the peeled delivery slip or the peeling target substrate.

  Conventionally, as a releasable superposed sheet, there are those proposed in the following patent documents. Patent Document 1 relates to a label. A medium or ultraviolet curable varnish sealing layer is formed on an intermediate label base material, and an ultraviolet curable pseudo adhesive layer is formed on the sealing layer. It has a structure provided with a label base material. In this case, the surface label substrate is peeled off from the intermediate label and the sealing layer together with the pseudo adhesive layer.

  Patent Document 2 relates to a reciprocating postcard, and has a structure in which an adhesive layer is formed on a second layer sheet, and a first layer sheet in which a release agent layer is formed on the adhesive layer is provided. It is. In this case, the first layer sheet is peeled from the second layer sheet and the adhesive layer together with the release agent layer.

JP 2009-042584 A Japanese Patent No. 4391279

  The releasable layered sheets including the above-mentioned Patent Documents 1 and 2 have a problem that the peeled base material is curled, resulting in inconvenience in subsequent handling. In particular, in the case of the above-mentioned patent document, curling occurs when printing is performed on the printing surface formed on the surface of the surface label base material or the printing surface formed on the first layer sheet, and then peeled off after printing. In addition, curling becomes more prominent as the surface label substrate and the first layer sheet on the peeling target side become thinner.

  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 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 superposed and a predetermined base material is peeled later, and the surface is a printing surface or a writing surface. An upper base material, a lower base material, an adhesive material layer formed on the lower base material, an ultraviolet curable shrinkable layer formed on the back surface of the upper base material, and a surface of the shrinkable layer And a release agent layer formed on the adhesive material layer and adhered to the adhesive material layer.

  In invention of Claim 2, the said adhesive material layer is the structure used as an aqueous | water-based emulsion adhesive agent.

  According to the invention of claim 1, the adhesive is formed on the lower substrate by sequentially forming the ultraviolet curable shrink layer and the release agent layer on the back surface of the upper substrate whose surface is the printing surface or the writing surface. When the upper substrate is peeled off from the adhesive layer of the lower substrate together with the shrink layer and the release agent layer, the printed surface of the upper substrate surface or The curling force generated on the writing surface side is suppressed by the contracting force generated on the opposite side of the printing surface or the writing surface side by the shrink layer formed directly on the back surface of the upper base material, and curling of the upper base material can be prevented. Is. In addition, even when a part of the release agent layer remains on the adhesive layer side when the upper base material is peeled off, a shrinkage layer exists between the upper base material and the release agent layer. Stable shrinkability due to the shrink layer can be ensured. In other words, curling prevention means that information such as barcodes provided on the peeled upper substrate can be read accurately, and handling such as organization and storage is improved. It will be.

  According to the invention of claim 2, by using the adhesive material layer as an aqueous emulsion adhesive, the moisture until the adhesive material layer cures penetrates into the upper base material and causes curling to shrink. The layer, or the shrink layer and the release agent layer can prevent moisture from penetrating, and can further prevent curling in combination with preventing curling by the shrink layer.

It is a block diagram of the releasable superposition sheet which concerns on this invention. It is a preparation conceptual diagram of the releasable superposition sheet concerning FIG. It is a conceptual diagram of the state after peeling of the releasable superposition sheet | seat which concerns on FIG. It is a composition conceptual diagram at the time of applying the releasable superposition sheet concerning the invention in this application to a concealment postcard.

  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 and a concealment postcard as a releasable superposition sheet, it is not limited to this, and it is applied to all those in which curling prevention of a base material to be peeled off is desired. Is possible.

  In FIG. 1, the block diagram of the releasable overlapping 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 20 that is an adhesive layer is formed on the medium layer 19. 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 second information layer 32 such as a barcode 13A unique to each delivery slip are printed. In the entry field, 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 is of an ultraviolet curable type and is used by paying attention to shrinkage upon curing. Examples of the ultraviolet curable type include ultraviolet curable ink and ultraviolet curable medium. Here, as a case where an ultraviolet curable medium is used, for example, it is formed with a thickness of 44 μm. In this case, it may be colored from a design viewpoint. The shrink layer 33 is formed directly on the upper base material 31 even when a part of the release agent layer (34) remains on the adhesive layer 20 side when the upper base material 31 is peeled later. Therefore, stable shrinkage can be ensured. In addition, although it is the structure which has the layer formed with the medium also in the above-mentioned patent documents 1, 2, it is for ensuring releasability to the last. In the present invention, the release agent layer (34), which will be described later, is responsible for releasability, and the shrink layer 33 is a layer for preventing curling due to shrinkage.

  Further, when the aqueous layer adhesive is used for the adhesive layer 20, the shrink layer 33 is applied to the upper base material 31 by the shrink layer 33 or the shrink layer 33 and a release layer (34) described later. Water penetration can be prevented.

  Then, 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 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 20 in the corresponding area of the lower base material 15 (the remaining half of the sticking form area).

  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. In other words, the contents to be used as a sticker slip notation and a delivery slip notation necessary 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 applied on the surface of the shrink layer 33, and the release agent layer 34 is formed by irradiating and curing 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.

  Therefore, FIG. 3 shows a conceptual diagram of the state after peeling of the releasable overlapping sheet according to FIG. In FIG. 3A, the delivery slip 13 is peeled from the lower base material 15. 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. The delivery slip 13 has a three-layer structure in which the upper substrate 31, the shrink layer 33, and the release agent layer 34 are integrated as described above. It tries to curl to the 2nd information part 32 side by the property (paper quality and thickness) of the upper base material 31, and the printing or writing to the 2nd information part 32 and an entry column.

  In this case, as shown in FIG. 3B, the delivery slip 13 has a contraction force that causes the contraction layer 33 formed directly on the upper base material 31 to contract to the opposite side of the second information section 32. That is, the balance between the force F0 to curl and the contraction force F1 by the contraction layer 33 is achieved, and curling of the delivery slip 13 is prevented.

  In addition, it is good also as forming the shrinkage | contraction layer 33 and the peeling agent layer 34 in the back like the delivery slip 13 on the back surface of the sticker slip 12 (the sticker slip base material 21). This is not for the purpose of peeling the sticker 12 but for manufacturing, and the first information layer 22 and the second information are formed on the surface of the base where the sticker base 21 and the upper base 31 are connected. In addition to forming the layer 32, the shrinkage layer 33 and the release agent layer 34 are sequentially formed on the back surface, and the separation line 14 is formed after bonding on the adhesive layer 20 of the lower substrate 15, thereby improving the manufacturing efficiency. It is something that can be done. In addition, information on a predetermined content that is displayed when the delivery slip 13 is peeled off is formed on the lower base material 15 in an area where the delivery slip 13 (upper base material 21) is located. Also good.

  Next, FIG. 4 shows a conceptual diagram of the structure when the releasable overlapping sheet according to the present invention is applied to a concealment postcard. In FIG. 4A, the concealment postcard 41 includes a first base piece 42 and a second base piece 43 which are connected by a fold line 44, and the first base piece 42 and the second base piece. The concealment information 45 including the barcode information is printed on the overlapping surface 43, and the address information 46 is formed on the opposite surface of the second base material piece 43.

  An adhesive layer (for example, a pseudo adhesive layer) 20 similar to the above is formed on the overlapping surface of the first base material piece 42, and the shrink layer 33 and the release agent layer 34 are formed on the overlapping surface of the second base material piece 43. Are sequentially formed, and the first base material piece 42 and the second base material piece 43 are overlapped and bonded together at the folding line 44 to form the concealment postcard 41.

  When the second base material piece 43 is peeled off from the first base material piece 42, a force F0 that the second base material piece 43 tries to curl to the address information 46 side is generated. The shrinkage layer 33 formed directly on 43 has a shrinkage force F1 on the side opposite to the force F0 and is balanced to prevent curling of the second base material piece 43.

  Thus, since the shrinkage layer 33 is directly formed on the upper base material (delivery slip) 13 of the delivery slip 11 to be peeled or the second base material piece 43 of the concealment postcard 41, these have a three-layer thickness. In combination with the difficulty of curling, the shrinkage property of the shrinkable layer 33 can effectively prevent curling after peeling.

  In addition, since the shrink layer 33 is formed directly on the upper base material 31 (second base material piece 43), that is, between the release agent layer 34, the upper base material 31 and the second base material piece 43 are temporarily provided. Even when a part of the release agent layer 34 remains on the adhesive layer 20 side when the film is peeled, the shrinkage layer 33 formed directly on the upper base material 31 (second base material piece 43) is stabilized. It is possible to ensure shrinkage.

  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 12A, 13A Barcode 14 Separation line 15 Lower base material 16 Adhesive layer 17 Peeling base material 18 Slit 19 Medium layer 20 Adhesive layer 21 Sticking slip base material 22 First information layer 31 Upper base material 32 Second information layer 33 Contraction layer 34 Release agent layer 41 Concealment postcard 42 First base material piece 43 Second base material piece 44 Folding line 45 Concealment information 46 Address information

Claims (2)

A releasable superposed sheet in which a plurality of base materials are superimposed and a predetermined base material is peeled later,
An upper substrate whose surface is a printing surface or a writing surface;
A lower substrate;
An adhesive layer formed on the lower substrate;
An ultraviolet curable shrink layer formed on the back surface of the upper substrate;
A release agent layer formed on the surface of the shrink layer and bonded to the adhesive layer;
A releasable overlay sheet characterized by comprising:   The releasable overlay sheet according to claim 1, wherein the adhesive layer is an aqueous emulsion adhesive.

Images