JP6429700B2 - Self-adhesive sheet laminate - Google Patents

Description

  The present invention relates to a self-adhesive sheet laminate that can be printed by a printer and can be written on a release sheet surface after the self-adhesive sheet is peeled off.

  Conventionally, a self-adhesive tape used for bundling a bundle of tubes, cables, pipes, wires and the like and tagging with information on articles is known (see, for example, Patent Documents 1 and 2). This self-adhesive tape has a structure in which an adhesive that is self-adhered with a light pressure is applied to one side of a long base material, and only the pressure part is adhered by pressing the adhesive application surfaces together. It has a function.

JP 2001-316646 A JP 2006-1580 A

  However, in the configuration of the above conventional self-adhesive tape, even if it is formed into a sheet shape for application to printing by a printer, the self-adhesive application surface is exposed, so the self-adhesive layer surface becomes an obstacle, and the printer Troubles related to paper handling such as poor conveyance and double feeding occurred frequently and could not be put to practical use. In the first place, when the self-adhesive tape as described above is formed into a predetermined sheet shape, for example, when cutting with a guillotine blade is attempted, the self-adhesive layer of the laminated sheet-like self-adhesive tape is formed by the guillotine blade. There is a problem that a so-called blocking phenomenon occurs in which the self-adhesive tape is pushed down and reaches the self-adhesive layer of the self-adhesive tape on the lower surface at the cut end surface portion and the self-adhesive tapes are connected to each other at the cut end surface.

  On the other hand, in a pressure-sensitive adhesive tape to which a normal pressure-sensitive adhesive is applied, a release sheet (a general sealing release sheet) is attached, but the surface of this release sheet is subjected to silicone or fluorine non-adhesive treatment. Has been. However, in such a non-adhesive release sheet, the self-adhesive sheet is not attached in the first place. The same was true when a film was used as the release sheet.

  Furthermore, when using a self-adhesive tape or a self-adhesive sheet, there is a demand for information such as the adhesive tape or self-adhesive sheet sticking destination and the date of pasting on the release sheet side to be managed. However, with the conventional techniques as described above, writing with a normal writing instrument such as a pencil or a ballpoint pen is difficult.

  Therefore, the present invention has been made in view of the above situation, and can be printed by a printer or the like, and can also be written on the release sheet surface after the self-adhesive sheet is peeled off. An object of the present invention is to provide a self-adhesive sheet laminate having excellent processability to a sheet shape.

In order to solve the above problems, the present inventors have made extensive studies on the structure of a self-adhesive sheet that can be applied to printing by a printer. As a result, the self-adhesive sheet and the release sheet are passed through a specific self-adhesive agent. The present inventors have invented a self-adhesive sheet laminate of the present invention in which and are bonded together under pressure. Therefore, the self-adhesive sheet laminate of the present invention comprises a self-adhesive sheet in which a self-adhesive layer is provided on one side of a base material, and a natural rubber MMA graft polymer latex, a filler and a binder on one side of the base material. It is characterized by laminating a release sheet provided with a weak self-adhesive layer so that the self-adhesive layer and the weak self-adhesive layer face each other.

  According to the self-adhesive sheet laminate of the present invention, printing with a printer or the like is possible, and it is possible to write on the release sheet surface after the self-adhesive sheet has been peeled off. Also excellent.

In the self-adhesive sheet laminate of the present invention, the self-adhesive layer is composed of natural rubber latex stock solution, natural rubber latex stock solution / binder, natural rubber latex / tackfire, or natural rubber latex / tackfire / binder. it is not preferable.

  Furthermore, in the self-adhesive sheet laminate of the present invention, the base material is preferably made of a raw paper or synthetic paper made from at least one selected from wood pulp, natural non-wood pulp, and synthetic fiber, and is self-attached. The adhesive force between the agent layer and the weak self-adhesive layer is preferably 5 g / 25 mm to 25 g / 25 mm.

  According to the self-adhesive sheet laminate of the present invention, printing with a printer or the like is possible, and it is possible to write on the release sheet surface after the self-adhesive sheet has been peeled off. In addition, an excellent self-adhesive sheet laminate can be provided.

It is a schematic sectional drawing which shows the structure of the self-adhesion sheet and peeling sheet in one Embodiment of the self-adhesion sheet laminated body of this invention. It is a perspective view explaining the usage condition of one Embodiment of the self-adhesive sheet laminated body of this invention.

  Hereinafter, more preferred embodiments of the present invention will be described in detail. FIG. 1 is a schematic cross-sectional view showing the configuration of a self-adhesive sheet and a release sheet in one embodiment of the self-adhesive sheet laminate of the present invention, and FIG. 2 is one embodiment of the self-adhesive sheet laminate of the present invention. It is a perspective view explaining the usage condition of. In addition, the self-adhesive sheet shown in FIG.

  The self-adhesive sheet laminate 10 of the present invention has a cross-sectional configuration in which a self-adhesive sheet 1 and a release sheet 2 are laminated as shown in FIG. The self-adhesive sheet 1 is provided with a self-adhesive layer 4 on one side of a base material 3, and the release sheet 2 is provided with a weak self-adhesive layer 6 on one side of a base material 5. In the self-adhesive sheet laminate 10 of the present invention, the self-adhesive layer 4 of the self-adhesive sheet 1 and the weak self-adhesive layer 6 of the release sheet 2 are laminated facing each other, for example, added from the thickness direction. The structure which bonded the self-adhesive agent layer 4 and the weak self-adhesive agent layer 6 by pressing is formed.

  As the base materials 3 and 5 in the present invention, base paper or synthetic paper made from at least one selected from wood pulp, natural non-wood pulp, and synthetic fiber can be used. Woody pulp includes hardwood bleached kraft pulp (hereinafter also referred to as LBKP), softwood bleached kraft pulp (hereinafter also referred to as NBKP), hardwood unbleached kraft pulp (LUKP), softwood unbleached kraft pulp (NUKP), and hardwood half bleached Kraft pulp (LSBKP), softwood semi-bleached kraft pulp (NSBKP), hardwood sulfite pulp, softwood sulfite pulp and other chemical pulp, Stone Grand Pulp (SGP), Pressurized Stone Grand Pulp (PGW), Refiner Grand Pulp (RGP), Mechanical pulp such as Thermo Grand Pulp (TGP), Chemi Grand Pulp (CGP), Crushed Wood Pulp (GP), Thermo Mechanical Pulp (TMP), and other non-woody pulps include kenaf, hemp, straw, cotton, bamboo, etc. Made chemically or mechanically from wood fiber Pulp fiber and the like. Further, as synthetic fibers, polyamide fibers, polyester fibers represented by polyethylene terephthalate fibers (hereinafter also referred to as PET or PET fibers), polyolefin fibers such as acrylic fibers, polyethylene fibers, polypropylene fibers, aramid fibers, polyethylene Naphthalate fiber, polybutylene terephthalate fiber, polyphenylene sulfide fiber (hereinafter also referred to as PPS fiber), polyacetal fiber, liquid crystal polymer fiber, polyimide fiber, and the like can be used. These wood pulp, natural non-wood pulp, and synthetic fiber can be used alone or in combination of two or more. As synthetic paper, additives such as fillers are added to and mixed with synthetic resin, and after melt-kneading with an extruder, it is extruded from a die slit and formed into a non-stretched type. Things can be used.

  In the present invention, the base material 3 on the self-adhesive sheet 1 side and the base material 5 on the release sheet 2 side may be the same, but the materials, thicknesses, characteristics, and the like differ depending on the application. A thing may be used. The substrate 3 preferably has a thickness of 90 μm to 200 μm, more preferably 120 μm to 180 μm, in consideration of the handling property of the self-adhering sheet. Further, the thickness of the base material 5 may be determined as appropriate in consideration of the cost, since the handleability and the processability are also discarded, and the base material 5 may be discarded.

  According to the self-adhesive sheet laminate of the present invention, the presence of the base material 5 can prevent paper conveyance failure during printing by a printer or the like, and can stack a large number of self-adhesive sheet laminates of the present invention. Even when cutting with a guillotine blade, etc., the self-adhesive layer is prevented from reaching the self-adhesive layer of the self-adhesive sheet laminate laminated underneath, effectively preventing the cutting end face blocking phenomenon at the time of cutting. It becomes possible to prevent.

  Furthermore, the self-adhesive layer 4 in the present invention can be arbitrarily selected from pressure-sensitive self-adhesives in which the self-adhesive layers adhere to each other by pressing without adhering to most substances in a normal state. Is possible. For example, vinyl chloride resin, vinylidene chloride resin, synthetic rubber resin, natural rubber latex stock solution, natural rubber latex, acrylic resin, etc., but considering the balance between performance and cost, natural rubber latex stock solution It is preferably formed by coating a base material with a natural rubber latex stock solution / binder, natural rubber latex / tackfire, or a natural rubber latex / tackfire / binder.

  Further, the binder in the self-adhesive layer contributes to self-adhesion force adjustment to the release sheet, prevention of falling off of the filler, and improvement in adhesion to the base material. For example, an acrylic copolymer, acrylonitrile-butadiene rubber ( NBR), styrene-butadiene rubber (SBR), chloroprene rubber and the like are used. The tackifier in the self-adhesive layer acts as a tackifier, for example, rosin derivatives (rosin, polymerized rosin, hydrogenated rosin and their esters with glycerol, pentaerythritol, ethylene glycol, diethylene glycol, etc.), terpene series Examples thereof include resins (polymers or copolymers such as α-pinene and β-pinene), petroleum resins, phenolic resins, xylene resins, and the like. Examples of the solid plasticizer include diphenyl phthalate, dihexyl phthalate, dicyclohexyl phthalate, dihydroabiethyl phthalate, dimethyl isophthalate, sucrose benzoate, ethylene glycol dibenzoate, trimethylolethane tribenzoate, and tribenzoyl glyceride tribenzoate. , Pentabenzoate tetrabenzoate, tricyclohexyl citrate, N-cyclohexyl-p-toluenesulfonamide, catechol dibenzoate, and the like. Since such a self-adhesive layer has excellent self-adhesive properties, it is possible to bond only the pressurized portions by overlapping and pressing the self-adhesive layers.

  Furthermore, the weak self-adhesive layer 6 in the present invention can be formed by coating a natural rubber MMA graft polymer latex, a filler and a binder on a substrate. As the filler in the weak self-adhesive layer, inorganic fillers such as talc, silica, calcium carbonate, and aluminum hydroxide, and organic fillers such as wheat starch, corn starch, and palm starch are used. The inorganic filler contributes to the improvement of ink absorbency when writing on the surface of the release sheet after peeling off the self-adhesive sheet, pencil writing property, etc. The organic filler is a blocking agent for the self-adhesive sheet laminate. It contributes to prevention. In addition, the binder in the weak self-adhesive layer contributes to self-adhesion force adjustment to the self-adhesive sheet, prevention of filler detachment (so-called powder falling) and improvement in adhesion to the substrate. A polymer, acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), chloroprene rubber, or the like is used. The addition ratio of the binder and the inorganic filler may be appropriately determined in consideration of both printing / writing characteristics and prevention of falling off of the filler, but preferably binder / inorganic filler = 2/1 to 1. / 3 range.

  Furthermore, in the weak self-adhesive layer in the present invention, if necessary, an antiseptic, a deodorant, an antifoaming agent, an ultraviolet absorber, an antioxidant, a surfactant, a curing agent, an antistatic agent, a dispersion Additives such as an agent, a thickener, a release agent, a fluorescent dye, a colored dye, a dye fixing agent, and an ink fixing agent may be added.

In the present invention, dry coating amount of weak resistance self-adhesive agent is preferably in the range of 3 to 15 g / ^{m 2,} more preferably from 5~12g / ^{m 2.} When this application amount is less than 3 g / m ² , the weak self-adhesive layer is too thin and the adhesion to the substrate is deteriorated. On the other hand, if the coating amount exceeds 15 g / m ² , the coating amount is too thick, and the problem of peeling from the substrate tends to occur.

  Such a weak self-adhesive layer exerts an appropriate self-adhesive force on the self-adhesive sheet by pressurization, so that the self-adhesive sheet before use is suitably bonded, and on the self-adhesive sheet side during use The self-adhesive sheet can be suitably peeled off without the weak self-adhesive agent adhering. In addition, the release sheet in the self-adhesive sheet laminate of the present invention is writable even on the weak self-adhesive surface of the release sheet because the weak self-adhesive layer has excellent ink absorbability, pencil writing properties, etc. It is.

  In the present invention, the adhesive force between the self-adhesive layer and the weak self-adhesive layer by pressurization as described above is preferably 5 g / 25 mm to 25 g / 25 mm. If the adhesive force is less than 5 g / 25 mm, the self-adhesive sheet may be peeled off from the release sheet during printing by a printer or the like. On the other hand, when this adhesive strength exceeds 25 g / 25 mm, the self-adhesive sheet does not peel well when the self-adhesive sheet is used, and the weak self-adhesive agent adheres to the self-adhesive sheet side, and the desired self-adhesive agent is attached. There is a possibility that the wearing performance cannot be demonstrated.

  Next, the usage aspect of the self-adhesive sheet laminate 10 of the present invention having the above-described configuration will be described. As shown in FIG. 2, in the self-adhesive sheet laminate 10 of the present invention, the self-adhesive sheet 1 is separated from the release sheet 2 via a self-adhesive layer and a weak self-adhesive layer (not shown). It is pasted on top. The self-adhesive sheet laminate of the present invention can be printed by a printer in this state (state where unnecessary portions of the self-adhesive sheet 1 are not raised). Before using the self-adhesive sheet, FIG. Information and the like can be written on the surface of the self-adhering sheet as indicated by reference signs A and B. In the present embodiment, printing by a printer is illustrated as an example of the above writing, but it is also possible to directly write by hand using a writing instrument or the like.

  When the self-adhesive sheet is used, the self-adhesive sheet 1 is peeled off from the release sheet 2 and the self-adhesive layers are overlapped and pressed, so that only the pressurized portion of the self-adhesive layer is bonded and bound. And tagging. Since various information is written on the self-adhering sheet adhered in this way, it is useful for storage, transportation, and the like.

  On the other hand, since the release sheet in the self-adhesive sheet laminate of the present invention can be written on the surface of the weak self-adhesive layer, it is shown in FIG. 2 on the surface of the release sheet 2 from which the self-adhesive sheet 1 has been peeled off. It is possible to leave a record by writing information such as a sticking destination of the self-attaching sheet and a sticking date, as indicated by reference numeral C.

  In addition, the self-adhesive and the weak self-adhesive used in the self-adhesive sheet laminate of the present invention are stored in a configuration such as a conventional scroll-type self-adhesive tape. Since the paper substrate layer surface coated with a self-adhesive layer maintains its adhesion due to the anchor effect with the pulp fiber, the self-adhesive surface adheres to the paper substrate with a light adhesive force because it is a repeated lamination. Therefore, there is a problem that it is easy to be attacked by the outside air and the self-adhesive force cannot be exerted even when the self-adhesive layer surfaces are pressurized. On the other hand, in the structure of the self-adhesive sheet laminate of the present invention, the self-adhesive layer surface of the self-adhesive sheet and the weak self-adhesive layer surface of the release sheet are opposed to each other. The self-adhesive layers adhere to each other and are hardly exposed to the outside air, and a good self-adhesive force can be maintained even over time.

  Further, in the self-adhesive sheet laminate of the present invention, by adjusting the physical properties of the self-adhesive agent of the self-adhesive sheet and the weak self-adhesive agent of the release sheet to an appropriate range, a waste raising process of unnecessary portions of the release sheet is performed. In addition, by having a release sheet, it is possible to suppress guillotine cutting of a plurality of self-adhesive sheet laminates and paper conveyance troubles during printer printing.

  Hereinafter, although an example explains composition and an effect of the present invention concretely, the present invention is not limited to these at all.

1. Preparation of self-adhesive sheet laminate <Example 1>
First, a bleached kraft paper having a basis weight of 70 g / m ² is used as a base material, and a natural rubber latex stock solution is applied to one side of the base material by a reverse roll coater and dried to form a self-adhesive layer having a thickness of 8 μm. A landing sheet was prepared. Next, a fine paper made of wood pulp having a basis weight of 127.9 g / m ² (manufactured by Oji Paper Co., Ltd., OK Prince fine paper) is used as a base material, and the following coating for the weak self-adhesive layer is applied to one side of the base material. It applied so that the application quantity at the time of drying might be 8 g / m < ² > with a reverse roll coater, and produced the peeling sheet which has a 6-micrometer-thick weak self-adhesive layer.

Paint for weak self-adhesive layer Natural rubber MMA graft polymerization latex 100 parts by weight Talc (inorganic filler) 100 parts by weight Wheat starch (organic filler) 75 parts by weight Styrene-butadiene rubber (binder) 100 parts by weight

  Next, the self-adhesive sheet and the release sheet produced as described above are laminated so that the self-adhesive layer and the weak self-adhesive layer face each other, and are bonded by a laminator at a linear pressure of 500 kg / m. A self-adhesive sheet laminate of Example 1 was prepared.

<Example 2>
Except that 10 parts by weight of talc (inorganic filler) was added to the self-adhesive for the self-adhesive sheet of Example 1 and the paint for the weak self-adhesive layer was changed to the following, the same as in Example 1 The self-adhesive sheet laminated body of Example 2 of this invention was produced.
Paint for weak self-adhesive layer Natural rubber MMA graft polymerization latex 100 parts by weight Talc (inorganic filler) 175 parts by weight Styrene-butadiene rubber (binder) 100 parts by weight

<Example 3>
The self-adhesive sheet base material of Example 1 is 95 μm thick (manufactured by YUPO Corporation, trade name: New YUPO, grade name: FGS), and the base material for release sheet is 130 μm thick (manufactured by YUPO CORPORATION, trade name: A self-adhesive sheet laminate of Example 3 of the present invention was produced in the same manner as in Example 1 except that it was changed to New Yupo, grade name: FGS).

<Example 4>
A self-adhesive sheet laminate of Example 4 of the present invention was produced in the same manner as Example 1 except that the weak self-adhesive layer coating material of Example 1 was changed to the following.
Paint for weak self-adhesive layer Natural rubber MMA graft polymerization latex 100 parts by weight Talc (inorganic filler) 100 parts by weight Corn starch (organic filler) 75 parts by weight Styrene-butadiene rubber (binder) 125 parts by weight

<Example 5>
A self-adhesive sheet laminate of Example 5 of the present invention was produced in the same manner as in Example 1 except that the weak self-adhesive layer coating material of Example 1 was changed to the following.
Paint for weak self-adhesive layer Natural rubber MMA graft polymerization latex 100 parts by weight Talc (inorganic filler) 100 parts by weight Corn starch (organic filler) 75 parts by weight Styrene-butadiene rubber (binder) 90 parts by weight

<Comparative Example 1>
The same procedure as in Example 1 was performed except that the self-adhesive layer coating material and the weak self-adhesive layer coating material of Example 1 were changed to acrylic pressure-sensitive adhesives (trade name: SK Dyne RE-339, manufactured by Soken Chemical Co., Ltd.). Thus, a self-adhesive sheet laminate of Comparative Example 1 was produced.

<Comparative Example 2>
Self-adhesion of Comparative Example 2 in the same manner as in Example 1 except that a release paper (manufactured by Sanei Kaken Co., Ltd., trade name: N-80HS) having no weak self-adhesive layer was used as the release sheet. A sheet laminate was produced.

<Comparative Example 3>
A self-adhesive sheet of Comparative Example 3 was produced in the same manner as in Example 1 except that no release sheet was provided.

2. Evaluation About the self-adhesive sheet laminates of Examples and Comparative Examples produced as described above, the adhesive strength between the self-adhesive layer and the weak self-adhesive layer (measured value, actual usability) according to the following method ), Pencil writing properties, paper passing characteristics, and self-adhesive sheet self-adhesion. These evaluation results are shown in Table 1.

<Adhesive strength between self-adhesive layer and weak self-adhesive layer>
After the self-adhesive sheet laminate was left for 1 day in an atmosphere of 23 ° C. and 50% RH, T at a pulling speed of 300 mm / min was used using a tensile tester (trade name: Tensilon UCT-5T, manufactured by Orientec). The adhesive force (g / 25 mm) by mold peeling was measured.

<Actual usability>
The self-adhesive sheet of the self-adhesive sheet laminate that had been punched was peeled off by hand, and the feeling of peeling was confirmed.
◎: Peeling smoothly ○: Peeling feeling is slightly heavy or slightly light, but can be peeled without any problem △: Peeling is heavy and there may be some difficulty in peeling, or peeling may be light and there is a risk of unintentional peeling X: Can not be peeled off or not attached

<Pencil writing ability>
Writability by handwriting on the weak self-adhesive layer surface was confirmed. For writing, Uni 0.5-100HB mechanical pencil replacement (Mitsubishi Pencil Co., Ltd.) was used.
○: Writable part can be clearly identified △: Written part can be distinguished ×: Writing is virtually impossible

<Paper passing characteristics>
A self-adhesive sheet laminate cut to A4 size was set on a paper feed tray of a commercially available laser printer, and the paper passing characteristics were confirmed.
○: The self-adhesive sheet stack was ejected without any problem. △: The paper was ejected without any problem, but the self-adhesive sheet and the release sheet might peel off at the end. ×: A paper transport problem occurred.

<Self-adhesive seat self-adhesion>
The coated surfaces of the self-adhesive sheets are put together and pressure-bonded by applying a load of 1 kg / 6 mm, and then T-shaped at a pulling speed of 300 mm / min using a tensile tester (trade name: Tensilon UCT-5T, manufactured by Orientec). It peeled and the self-adhesion characteristic was confirmed.
○: The self-adhesive sheet sticks and the base material breaks. △: The self-adhesive sheet sticks, but peels off without destroying the base material. X: Peels at the interface of the self-adhesive layer.

<Cut characteristics>
Ten self-adhesive sheet laminates of A4 size were stacked and checked for blocking when cut using a push-off paper cutter.
○: The laminated self-adhesive sheet laminates could be cut without blocking at the cut surface. ×: The overlapped self-adhesive sheet laminates were blocked at the cut surface.

  As is clear from Table 1, the self-adhesive sheet laminates of the examples of the present invention exhibited sufficient characteristics in all evaluation items. In Example 4 where the amount of the binder in the coating for the weak self-adhesive layer was increased, the adhesive strength between the self-adhesive layer and the weak self-adhesive layer was low, so that the self-adhesive sheet and the release sheet were used during printer printing. In some cases, some peeling occurred at the end. Moreover, in actual useability, although a feeling of peeling was light and the pencil writing property was slightly inferior, it was a level that could withstand actual use. Furthermore, in Example 5 in which the amount of the binder in the paint for the weak self-adhesive layer was reduced, the self-adhesive sheet may be difficult to peel off because the adhesive force between the self-adhesive layer and the weak self-adhesive layer is high. However, it was a level that could withstand actual use.

  On the other hand, in the self-adhesive sheet laminate of Comparative Example 1, since the self-adhesive and the weak self-adhesive were changed to the acrylic pressure-sensitive adhesive, the self-adhesive sheet and the release sheet were completely adhered, The self-adhesive sheet could not be peeled well from the release sheet and could not function as a self-adhesive sheet. For this reason, the pencil writing property on the weak self-adhesive surface of the release sheet could not be evaluated at all. Moreover, the self-adhesive sheet laminate of Comparative Example 2 does not self-adhere the self-adhesive sheet and the release sheet, cannot evaluate the adhesive strength and actual usability, and is inferior in the pencil writing property. Occurred frequently. The self-adhesive sheet of Comparative Example 3 did not have a release sheet, and resulted in frequent paper passing failures in the paper passing test and blocking in the cutting property confirmation test.

  As described above, according to the self-adhesive sheet laminate of the present invention, printing with a printer or the like is possible, and it is possible to write on the release sheet surface after peeling off the self-adhesive sheet. It was shown that the processability to the sheet shape is also excellent.

Claims (7)

A self-adhesive sheet provided with a self-adhesive layer on one side of the substrate;
A release sheet comprising a weak self-adhesive layer comprising a natural rubber MMA graft polymer latex, a filler and a binder on one side of the substrate,
A self-adhesive sheet laminate, wherein the self-adhesive layer and the weak self-adhesive layer are laminated so as to face each other.   The self-adhesive layer is made of natural rubber latex stock solution, natural rubber latex stock solution / binder, natural rubber latex / tackfire, or natural rubber latex / tackfire / binder. Laminated sheet laminate. The self-adhesive sheet laminate according to claim 1 or 2 , wherein the base material is made of base paper or synthetic paper made from at least one selected from wood pulp, natural non-wood pulp, and synthetic fiber. . The self-adhesive sheet laminate according to any one of claims 1 to 3 , wherein an adhesive force between the self-adhesive layer and the weak self-adhesive layer is 5 g / 25 mm to 25 g / 25 mm. The self-adhesive sheet laminate according to claim 1 , wherein a surface of the weak self-adhesive layer is printable or writable. The self-adhesive sheet laminate according to any one of claims 1 to 5, wherein a thickness of the base material on the self-adhesive sheet side is 90 to 200 µm. The coating amount at the time of drying the weak self-adhesive in the weak self-adhesive layer is 3 to 15 g / m. ² The self-adhesive sheet laminate according to any one of claims 1 to 6, wherein

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