JP2017170802A - Press-bonded sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a defective peeling condition of a binder-applied-surface torn along a crack and/or a distortion which may occur when a press-bonded sheet is peeled open, due to presence of the minute cracks and/or distortions on a cut surface of the press-bonded sheet.SOLUTION: A press-bonded sheet comprises: a substrate including one of surfaces provided with a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is folded to be an inner side at a folding part, and the substrate has an exposed surface part at one of folded parts thereof protruding from the other one of the folded parts, and is characterized in that the substrate and the pressure-sensitive adhesive layer in an area including the exposed surface part and arranged under one periphery side of the other one of folded parts of the substrate, on one of the folded parts of the substrate, are compressed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pressure-sensitive adhesive sheet, and more specifically, a base material having a pressure-sensitive adhesive layer is folded and overlapped at a folding portion provided on the base material, whereby the pressure-sensitive adhesive layers are overlapped with each other. The present invention relates to a pressure-bonding sheet that is pressure-bonded by an adhesive layer.

There is a crimpable sheet on which personal information is printed. In this pressure-bonded sheet, a pressure-sensitive adhesive is applied to at least a part of the base material constituting the sheet portion, and the pressure-sensitive adhesive surface is overlapped by printing such as design or personal information on the pressure-sensitive adhesive surface. Thus, by crimping at the folded portion, it is possible to perform crimping in a peelable manner. The person who has received the pressure-bonded sheet can view the pressure-sensitive adhesive surface overlapped by turning open from any edge other than the folded portion.

The edge portion of the pressure-bonded sheet is cut by manufacturing, and the cut surface is not a completely uniform surface, but is slightly cracked or distorted. Also, when using a pressure-bonded sheet as a postcard and mailing it, it is not uncommon for scratches and distortions to occur at the edges. When a person who receives a postcard of a pressure-bonded sheet or a pressure-bonded sheet turns over, the pressure-sensitive adhesive surface may not be peeled off cleanly due to tearing along cracks, scratches and distortions that occur in a part of the cut surface.

As an invention that makes it possible to cleanly remove the pressure-sensitive adhesive surface of the pressure-bonding sheet, for example, Patent Document 1 has already been disclosed. In the invention disclosed in Patent Document 1, the adhesive sheet having the same use as the pressure-bonding sheet is provided with a portion that weakens the effect of the adhesive called “glue killing” at the edge of the pressure-sensitive adhesive sheet. A method for producing a paste-killing adhesive sheet and a paste-killing pressure-sensitive adhesive sheet in which the force applied to the pressure-sensitive adhesive surface can weaken the force applied to cracks, scratches and distortion at the edge.

JP 2007-39484 A

However, in the pressure-sensitive adhesive sheet described in Patent Document 1, printing ink or varnish is used as the paste-killing agent, and the cost of the material for using the printing ink or varnish is increased. A space for applying varnish is required, and the design of the pressure-sensitive adhesive surface and the printing contents of personal information may be restricted.

Therefore, the present invention forms a portion that weakens the effect of the adhesive on the edge of the adhesive sheet without restricting the design or personal information printed on the adhesive surface, and without using a paste-killing agent. The purpose is to be able to.

The pressure-sensitive adhesive sheet and the method for manufacturing the pressure-sensitive adhesive sheet according to the present invention solve the above-described problems by the following inventions. In addition, although the code | symbol in the parenthesis attached | subjected for reference to each following invention respond | corresponds with the code | symbol attached to embodiment and drawing which are mentioned later, this invention is not limited to embodiment.

In a first aspect of the present invention, a pressure-sensitive adhesive layer is provided on one surface of a base material, and the base material is a base material folded in one fold with the pressure-sensitive adhesive layer inside. The one substrate has an exposed surface extending from one side of the other substrate, and is on the exposed surface side of the one substrate, and includes one surface of the other substrate including the exposed surface. The pressure-sensitive adhesive sheet is characterized in that the base material and the pressure-sensitive adhesive layer in the straddling region are compressed.

According to the pressure-sensitive adhesive sheet of the first invention, the compressed portion (12) is formed by compressing the base material (10) and the pressure-sensitive adhesive layer (11) along the cut portion (20) of the pressure-sensitive adhesive sheet. Therefore, compared to the portion where the non-compressed pressure-sensitive adhesive layers (11) are folded and overlapped and crimped, the compression force of the compressed portion is weakened, and a portion that weakens the adhesive force can be formed.
Therefore, when the person who receives the pressure-sensitive adhesive sheet of the first invention turns over from the cutting part (20) of the pressure-bonding sheet, even if the cutting part (20) has cracks, scratches, or distortion, the adhesive strength is weak. , Cracks, scratches, distortion, and the adhesive surface can be peeled off.

According to a second aspect of the present invention, a pressure-sensitive adhesive layer is provided on both sides of the base material, and the base material is folded in a Z-shape at two folds with the pressure-sensitive adhesive layer inside. Of the base materials divided at the folding part, the base material located in the center has an exposed surface extending from one side of each base material located at both ends,
The base material and the pressure-sensitive adhesive layer are compressed on the exposed surface side of the base material located at the center and straddling one side of each base material including the exposed surface and located at both ends. A crimping sheet.

According to the pressure-sensitive adhesive sheet of the second invention, the compressed portion (12) is formed by compressing the base material (10) and the pressure-sensitive adhesive layer (11) along the cut portion (20) of the pressure-sensitive adhesive sheet. Therefore, compared to the portion where the non-compressed pressure-sensitive adhesive layers (11) are folded and overlapped and crimped, the compression force of the compressed portion is weakened, and a portion that weakens the adhesive force can be formed.
Therefore, when the person who receives the pressure-sensitive adhesive sheet of the second invention turns over from the cutting part (20) of the pressure-sensitive adhesive sheet, even if the cutting part (20) has cracks, scratches, or distortion, the adhesive strength is weak. , Cracks, scratches, distortion, and the adhesive surface can be peeled off.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a part of the surface that is folded and overlapped by the folding portion is formed by the through hole (24) provided at a predetermined position of the base material (10). It is characterized by being visible after crimping.

According to the pressure-sensitive adhesive sheet of the third invention, since the pressure-sensitive adhesive sheet is used as a postcard, the surface is folded and overlapped by the folding portion by the through hole (24) provided at a predetermined position of the base material (10). The printed letters of “postcard” are visible.
Therefore, the pressure-sensitive adhesive sheet of the third invention can be used as a postcard.

According to a fourth aspect of the present invention, in the first or second aspect, the base material (10) folded and overlapped at the folding portion has a short one end so that a part of the overlapping surface can be visually recognized after pressure bonding. To do.

According to the pressure-sensitive adhesive sheet of the fourth invention, since the pressure-sensitive adhesive sheet is used as a postcard, the base material (10) is printed on a part of the overlapping surface by being folded and crimped with one end shortened. The letter “postcard” is visible.
Therefore, the pressure-sensitive adhesive sheet of the fourth invention can be used as a postcard.

According to a fifth aspect of the present invention, in any of the first to fourth aspects of the present invention, the base (10) and the pressure-sensitive adhesive layer ( 11) is compressed.

According to the pressure-sensitive adhesive sheet of the fifth invention, since the corner portion (25) or the corner cut portion (26) is compressed, the non-compressed pressure-sensitive adhesive layers (11) are folded and overlapped for pressure bonding. Compared with the portion, the pressure-bonding force of the compressed portion is weakened, and the corner portion (25) or the corner cut portion (26) that weakens the adhesive force can be formed.

Therefore, when the person who receives the pressure-sensitive adhesive sheet of the fifth invention turns over from the corner portion or the corner cut portion of the pressure-bonded sheet, the adhesive surface can be peeled cleanly from the corner portion or the corner cut portion.

According to the present invention, without restricting the design or personal information printed on the pressure-sensitive adhesive surface, and without using a paste-killing agent or the like, a portion that weakens the effectiveness of the pressure-sensitive adhesive is formed on the edge of the pressure-sensitive adhesive sheet. Can do. Therefore, the productivity of the pressure-bonded sheet is improved.

It is a figure explaining the state before the crimping | compression-bonding of the crimping sheet of Embodiment 1. FIG. It is a figure explaining the state after the crimping | compression-bonding of the crimping sheet of Embodiment 1. FIG. It is a figure explaining the state before the crimping | compression-bonding of the crimping sheet of Embodiment 2. FIG. It is a figure explaining the state after the crimping | compression-bonding of the crimping sheet of Embodiment 2. FIG. It is a figure explaining the state before the crimping | compression-bonding of the crimping sheet of Embodiment 3. FIG. It is a figure explaining the state after the crimping | compression-bonding of the crimping sheet of Embodiment 3. FIG. It is a figure explaining the state before the crimping | compression-bonding of the crimping sheet of Embodiment 4. FIG. It is a figure explaining the state after the crimping | compression-bonding of the crimping sheet of Embodiment 4. FIG. It is an example of the method of forming the compression part of the crimping | compression-bonding sheet of Embodiment 1. FIG. It is an example of the method of forming the compression part of the crimping sheet of Embodiment 2. FIG. It is a figure explaining an example of a roller in order to form a compression part. It is a figure explaining an example of a pressing die in order to form a compression part. It is an example which forms a compression part in a corner part. It is an example which forms a compression part in a corner cut part.

Each embodiment of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
First, the first embodiment will be described.
FIG. 1 is an example of a schematic view of a pressure-bonding sheet 1 according to the first embodiment.
FIG. 1A is a view of the pressure-bonding sheet 1 as viewed from above.
FIG. 1B is a cross-sectional view taken along the line E-E in FIG.
FIG. 2A is a diagram for explaining a state after the pressure-bonding sheet 1 of FIG.
FIG. 2B is a cross-sectional view taken along the line FF in FIG.

As shown in FIG. 1 (1), in Embodiment 1, a pressure-sensitive adhesive layer is provided on one surface of a base material, and the base material is folded at one fold with the pressure-sensitive adhesive layer inside. Of the substrates, one substrate has an exposed surface extending from one side of the other substrate, and is the exposed surface side of the one substrate, and includes the exposed surface and the other substrate. The pressure-sensitive adhesive sheet is characterized in that a base material in a region straddling one side of the material and a pressure-sensitive adhesive layer are compressed.
That is, the pressure-sensitive adhesive layer 11 is formed only on one surface of the substrate 10, and the pressure-sensitive adhesive sheet is a type in which the substrate 10 is folded in half so that the pressure-sensitive adhesive layer 11 is inside (FIG. 1). (Refer to EE arrow cross-sectional view of (2)).
Further, marginal punches 23 penetrating on the front and back sides are provided at predetermined positions on both sides of the base material 10 so that the base material 10 can be pin-fed without deviation by an apparatus such as a printing press. An apparatus such as a printing machine has a mechanism for feeding the substrate 10 by a roller or the like provided with a convex portion so as to be fitted to the marginal punch 23 (not shown).
In FIG. 1, for convenience of explanation, the cutting portion 20a, the cutting portion 20b, and the valley fold portion 21 are shown by broken lines, but in actuality, printing or the like is not performed. A part is printed to the extent of a mark.

The compressing unit 12 is a portion in which the base 10 and the pressure-sensitive adhesive layer 11 are compressed after the pressure-sensitive adhesive layer 11 is provided on the base 10 and then compressed by a roller or a mold. The compression part 12 is formed in a strip shape at a predetermined interval from the cutting part 20a and along the cutting part 20a. The compression part 12 is formed at a position where the end of the cutting part 20 b is near the center of the compression part 12 when the base material is folded from the valley fold part 21. The width of the compression part 12 is formed in consideration of some deviation.
The cutting area including the marginal punch 23 is necessary for manufacturing a product as a margin for printing management information, but is cut by the cutting unit 20a and the cutting unit 20b because it is an unnecessary part in the final product. .

FIG. 2 (1) shows a state after the pressure-bonding sheet 1 of FIG. 1 (1) has been crimped, and after the cutting area has been cut by the cutting portion 20a and the cutting portion 20b. Moreover, FIG. 2 (2) represents the FF arrow sectional drawing of FIG. 2 (1). The thickness direction is exaggerated for easy explanation. After being compressed by a roller, a die, or the like, which will be described later, the compression unit 12 becomes substantially concave although there is some restoration due to the elastic action of the base material 10 and the pressure-sensitive adhesive layer 11.
After the compression part 12 is formed, the pressure-bonding sheet 1 is folded at a valley fold part 21 to crimp the left and right pressure-sensitive adhesive layers 11 together. By this pressure bonding, information printed on the base material 10 or the pressure-sensitive adhesive layer 11 by a printing machine or the like, or information printed by on-demand printing by a printer or the like becomes inside the folded surface, and the information is concealed. Become.

Since the compression part 12 is substantially concave compared to the other surface having the pressure-sensitive adhesive layer 11, there is a slight gap in the pressure-bonded sheet 1 after pressure bonding, or the adhesive force of the compression part 12 is the compression part. Crimping is performed with a weaker adhesive force than other crimping surfaces.

The pressure-bonding sheet 1 is sent to a recipient by mail or the like after manufacture, and when the recipient opens, it can be opened by peeling from between the cutting portion 20b and the compression portion 12. The adhesive force of the pressure-sensitive adhesive layer 11 by the compression part 12 is such that there is a slight gap on the pressure-bonding surface of the pressure-sensitive adhesive layer 11, or the pressure-sensitive adhesive layer 11 is pressed with a weaker adhesive force than the pressure-bonding surface other than the compression part 12. . Furthermore, when the base material 10 is compressed, the strength of the compression portion 12 with respect to the base material 10 is increased. Therefore, even if the base material 10 is easily broken due to scratches or breaks in the cut surface at the cutting portion 20b, the scratches or breaks of the base material 10 do not spread at the time of peeling, and the pressure-sensitive adhesive layers 11 It is possible to view information on the surface that is peeled off from the adhesive surface and concealed.

Although not shown, the pressure-sensitive adhesive layer 11 of the base material 10 is provided so that the information printed or printed on the base material 10 cannot be seen through during handling such as mail delivery. It is preferable to perform tint block printing between the surface opposite to the formed surface and between the substrate 10 and the pressure-sensitive adhesive layer 11.

Below, the element which comprises the crimping | compression-bonding sheet 1 of this embodiment is demonstrated in detail.
(Base material)
Examples of the base material 10 of the pressure-bonding sheet 1 include paper such as fine paper, art paper, coated paper, cast-coated paper, synthetic resin or emulsion-impregnated paper, synthetic rubber latex-impregnated paper, synthetic resin-containing paper, and cellulose fiber paper. Alternatively, a film (so-called synthetic paper) having fine voids (microvoids) inside the substrate can be used.

(Pressure sensitive adhesive layer)
The pressure-sensitive adhesive layer 11 does not adhere even if the pressure-sensitive adhesive layer 11 to be used contacts with the base material 10, and is bonded only after the pressure-sensitive adhesive layers 11 are in pressure contact with each other, and can be peeled off again. It was adjusted as follows.
As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 11, an adhesive containing an adhesive main agent and a filler described below can be used. Adhesive agents include natural rubber latex obtained by sulfur-free vulcanization of natural rubber and mixed with methyl methacrylate, and natural rubber latex obtained by graft copolymerization of methyl methacrylate and styrene monomer. Can be mentioned.

Examples of the filler contained in the pressure-sensitive adhesive include clay, calcite-based precipitated calcium carbonate forming primary or secondary aggregates, and aragonite-based precipitated calcium carbonate forming secondary aggregates. , Calcium carbonate, styrene beads, silica, synthetic fine particle silica, amino surface modified silica, wax surface treated silica, spherical silica, ordinary calcium, metal oxides such as zinc, magnesium, aluminum or titanium, hydroxides, Examples thereof include carbonates, silicates, and mixtures thereof. Preferred are clay and calcium carbonate.

In the pressure-sensitive adhesive, the above-mentioned adhesive main agent, filler, and other additives such as a dispersant and a printability improver can be used in combination according to the purpose.
The pressure-sensitive adhesive can be applied to the substrate 10 by a conventionally known coating method.
For example, it is applied by a general coater such as an air knife coater, roll coater, blade coater, rod blade coater, bar coater, die coater, etc., but the coating amount is in the range of ³ to 15 g / m ² in terms of solid content. It is desirable to be adjusted.
If the coating amount is less than 3 g / m ² , the desired adhesive force cannot be obtained, and unintended peeling tends to occur. If the coating amount exceeds 15 g / m ² , the adhesive force becomes too strong and may peel off. It becomes impossible, or adhesive wrinkles adhere to the coating roll at the time of coating, and operational and quality problems are likely to occur.

Below, the manufacturing method of the crimping | compression-bonding sheet 1 is demonstrated.
A pressure-sensitive adhesive layer 11 and a printing part (not shown) are formed on the base material 10 of the pressure-bonding sheet 1. The order in which the pressure-sensitive adhesive layer 11 and the printing part are formed is not particularly limited. In addition, when obtaining what coated the pressure sensitive adhesive layer 11 on the whole surface of one side (upper surface or lower surface) of the base material 10, formation of a printing part will be performed later.
This printing part is formed by printing such as gravure printing or offset printing, or “postcard” when recording variable data such as personal information on the pressure-bonding sheet 1 with a printer such as ink jet recording or electrophotographic recording. It is also possible to perform recording for displaying such as “contact card”.

  Next, the valley folding part 21 or the cutting part 20 is formed in the predetermined location of the crimping | compression-bonding sheet 1 by a sewing process. In that case, it is preferable for mass production to continuously process in a long form using the base material 10 of the continuous sheet. In the conveying direction of the continuous sheet, a marginal punch 23 is provided at both ends, and a pair of roll surfaces. In addition, it is preferable to punch and process the marginal punch 23 by attaching pins and dies and rotating the rolls with the substrate 10 interposed therebetween. Moreover, you may form a corner cut part by stamping as needed (not shown). However, it is necessary to change the shape in which the pin and the die mesh with each other to a corner cut shape (triangle).

A pressure-sensitive adhesive layer 11 and a printing portion are formed on the base material 10, and a valley fold portion 21 or a cutting portion 20 is formed. To compress the base material 10 and the pressure-sensitive adhesive layer 11 to form the compressed portion 12 to reduce the adhesive force, and then fold the base material 10 at the valley fold portion 21 or the base material 10 at the cutting portion 20. Were cut out, the cut bases 10 were stacked, and the pressure-sensitive adhesive layers 11 were pressed and bonded together.

Next, a method for forming the compression unit 12 will be described.
FIG. 9 is an example of forming the compression part 12 of the pressure-bonding sheet 1 according to the first embodiment. In FIG. 9, the base material 10 is a continuous sheet, and after the pressure-sensitive adhesive layer 11, the printing part (not shown), the cutting part 20, and the like are formed on the base material 10, The roller 30 is pressed against the surface while rotating the roller 30 in accordance with the movement of the continuous sheet, and the base material 10 and the pressure-sensitive adhesive layer 11 are compressed to form the compressed portion 12. When compressed, a substantially concave portion is formed, but the compression force is set so as to be a depression of about 50 to 400 μm, preferably about 200 μm, compared to before compression.

(Operational effect of the first embodiment)
As described above, according to the first embodiment, the surface of the pressure-sensitive adhesive layer 11 to be concealed can be printed without being restricted by design, personal information, or the like, and a paste killing agent or the like is used. Without this, a portion that weakens the effectiveness of the adhesive can be formed at the edge of the adhesive sheet.
Further, since the compressed portion 12 in which the base material 10 is compressed is stronger and more difficult to break than the uncompressed base material 10, when the person who receives the pressure-bonding sheet 1 turns over from the compressed portion 12, cracks and scratches are generated. Even if there is a crack, the adhesive surface can be peeled off cleanly without spreading.
A gap can also be formed in the compressed portion.

(Embodiment 2)
The first embodiment is a pressure-bonding sheet in which the pressure-sensitive adhesive layer 11 is formed only on one surface of the base material 10 and the base material 10 is folded in two so that the pressure-sensitive adhesive layer 11 is on the inner side.

In contrast, in Embodiment 2, a pressure-sensitive adhesive layer was provided on both surfaces of the base material, and the base material was folded in a Z shape at two folds with the pressure-sensitive adhesive layer inside. Of the base materials divided at the folding portion, the base material located in the center has an exposed surface extending from one side of each base material located at both ends, and the base material located in the center. The pressure-sensitive adhesive sheet is characterized in that a base material and a pressure-sensitive adhesive layer in a region straddling one side of each base material including the exposed surface and located at both ends are compressed.
That is, in the second embodiment, the folding part is formed at two places, the valley folding part 21 and the mountain folding part 22, and the folding part 21 is folded at the valley folding part 21 and the mountain folding part 22 is folded at the mountain folding part 3. It is a pressure-sensitive sheet called a so-called Z-fold in which the paper surface is folded.
Hereinafter, the second embodiment will be described with a focus on differences from the first embodiment.

FIG. 3 is a diagram for explaining a state before pressure bonding of the pressure-bonding sheet 2 according to the second embodiment.
FIG. 3A is a view of the pressure-bonding sheet 2 as viewed from above.
FIG. 3B is a cross-sectional view taken along the line GG in FIG.
FIG. 4 is a diagram for explaining a state after the crimping of the crimping sheet 2 according to the second embodiment.
FIG. 4 (1) is a view of the pressure-bonded sheet 2 after pressure bonding as viewed from above.
FIG. 4B is a cross-sectional view taken along line HH in FIG.

In the second embodiment, after printing, a compression part 12a and a compression part 12b are formed along the cutting part 20 with a roller or the like after printing (see FIGS. 3 (1) and (2)), and the cutting part 20 cuts. Then, the pressure-sensitive adhesive layers 11 are pressure-bonded by being folded at the valley fold portion 21 and the mountain fold portion 22 (see FIGS. 4 (1) and 2).

The compression part 12a and the compression part 12b are parts where the base 10 and the pressure-sensitive adhesive layer 11 are compressed after the pressure-sensitive adhesive layer 11 is provided on the base 10 and then compressed by a roller or a mold. . The compression portion 12 a is formed in a strip shape at a predetermined interval from the valley fold portion 21 and along the valley fold portion 21. Similarly, the compression portion 12b is formed in a strip shape at a predetermined interval from the mountain fold portion 22 and along the mountain fold portion 22.

When the base material is folded from the valley fold part 21 or the mountain fold part 22, the compression part 12a and the compression part 12b are located near the center of the compression part 12a and the compression part 12b. Form in position. The widths of the compression part 12a and the compression part 12b are formed in consideration of some deviation.

Next, a method for forming the compression unit 12 will be described.
FIG. 10 shows an example of forming the compression part 12a and the compression part 12b of the pressure-bonding sheet 2 of the second embodiment. In FIG. 10, the base material 10 is a continuous sheet, and a pressure-sensitive adhesive layer 11, a printing part (not shown), a cutting part 20, a valley folding part 21, a mountain folding part 22, etc. are formed on the base material 10. After that, the substrate 10 and the pressure-sensitive adhesive layer 11 are compressed by pressing while rotating the roller 30 according to the movement of the continuous sheet along the cutting part 20 on one surface of the pressure-sensitive adhesive layer 11, The compression part 12a is formed. Thereafter, the continuous sheet is turned upside down at the front and back turning part 31, and then pressed by the roller 30 along the other cutting part 20 on the other side, so that the base 10 and the pressure sensitive adhesive are bonded. The layer 11 is compressed to form the compression portion 12b. When compressed, a substantially concave portion is formed, but the compression force is set so as to be a depression of about 50 to 400 μm, preferably about 200 μm, compared to before compression.

(Operational effect of the second embodiment)
As described above, according to the second embodiment, the same operational effects as those of the first embodiment are exhibited, and the following operational effects are achieved by the added configuration. That is, if the pressure-bonding sheet 1 and the pressure-bonding sheet 2 after the pressure bonding are the same size, the pressure-bonding sheet 4 has a paper surface that is 1.5 times the area ratio and the concealment portion is twice, so that more personal information Etc. can be printed and placed on the concealed surface.

(Embodiment 3)
The third embodiment is a pressure-sensitive adhesive sheet according to the first or second embodiment, wherein a part of the surface that is folded and overlapped by the fold portion can be visually recognized after being crimped by the through-hole provided at a predetermined position of the base material. is there.
More specifically, when folded at the valley fold 21, the letters “postcard” printed on the substrate 10 or the pressure-sensitive adhesive layer 11 can be seen through the through hole 24 and can be used as a postcard. It is a pressure-bonding sheet.
The configuration of the third embodiment is different from the second embodiment in that two folds applied in the second embodiment are formed. Hereinafter, differences from the second embodiment will be described.
FIG. 5 is a diagram illustrating a state before the pressure-bonding sheet 3 according to Embodiment 3 is pressed.
FIG. 5A is a view of the pressure-bonding sheet 3 as viewed from above.
FIG. 5B is a cross-sectional view taken along the line I-I in FIG.
FIG. 6 is a diagram for explaining a state after the crimping of the crimping sheet 3 according to the third embodiment.
FIG. 6A is a view as seen from above when a part of the concealed surface exposed from the through hole 24 after the pressure-bonding sheet 3 is pressure-bonded (in the third embodiment, the printing portion 13) is on the left side. is there.
FIG. 6B is a cross-sectional view taken along the line JJ in FIG.

In the third embodiment, the folding part is formed at two places, the valley folding part 21 and the mountain folding part 22, and when the folding part 21 is folded at the valley folding part and the mountain folding part 22 is folded at the mountain folding part, three sheets of paper are formed. This is a pressure-bonding sheet called a Z-fold that overlaps. Furthermore, the letter “postcard” printed on the substrate 10 or the pressure-sensitive adhesive layer 11 through the through hole 24 can be visually recognized, and is a pressure-sensitive sheet that can be used as a postcard.
FIG. 5 is an example of a schematic view of the pressure-bonding sheet 3 according to the third embodiment. 5 (1) is different from the second embodiment in that a part of the concealment surface is exposed from the through hole 24 after the pressure bonding. That is, in the third embodiment, not only the valley fold portion 21 is provided between the paper surface with the printing unit 13 and the paper surface with the through holes 24, but also a paper surface of the same size as the paper surface with the printing unit 13 is provided. It is provided at a position that is symmetric with respect to the mountain folded portion 22.

FIG. 5B represents a cross-sectional view taken along the arrow I-I. The compression parts 12a and 12b formed along the cutting part 20 are concealed by the compression parts 12a and 12b when folded at the valley fold part 21 or the mountain fold part 22, that is, are pressure-bonded to the pressure-sensitive adhesive layer 11. Formed on the surface.
Further, when folded at the valley fold portion 21, the printing portion 13 is formed at a position where the letters “postcard” can be visually recognized through the through hole 24.

FIG. 6A shows the pressure-bonding sheet 3 after pressure bonding. FIG. 6B shows a cross-sectional view taken along the line JJ. In the third embodiment, after printing, compression parts 12a and 12b are formed along the cutting part 20 by rollers or the like, respectively, and after being cut by the cutting part 20, folded at a valley fold part 21 and a mountain fold part 22. Pressure-bonding the pressure-sensitive adhesive layers 11 together.

(Operational effect of the third embodiment)
As described above, according to the third embodiment, the same operational effects as those of the second embodiment are exhibited, and the following operational effects are achieved by the added configuration. That is, if the pressure-bonding sheet 1 and the pressure-bonding sheet 3 after the pressure bonding are the same size, the pressure-bonding sheet 3 has a paper surface that is 1.5 times as large as the area ratio, and the concealing portion is doubled. Etc. can be printed and placed on the concealed surface.

(Embodiment 4)
The fourth embodiment is characterized in that, in the first or second embodiment, the base material that is folded and overlapped at the fold portion has a short one end so that a part of the overlapping surface can be visually recognized after pressure bonding.
More specifically, in Embodiment 4, when folded at the valley fold portion 21, one of the cut portions 20 (the cut portion 20 a) is symmetrical with respect to the other cut portion 20 b and the valley fold portion 21. Therefore, the letter “postcard” printed on the substrate 10 or the pressure-sensitive adhesive layer 11 can be visually recognized without being concealed, and can be used as a postcard.
FIG. 7 is an example of a schematic view of the pressure-bonding sheet 4 according to the fourth embodiment. 7 (1), the difference from Embodiment 3 is that the cut portion 20b is formed at a position closer to the valley fold portion 21 than the position symmetrical to the cut portion 20a with respect to the valley fold portion 21. The printed part 13 is formed at a position where the letter “postcard” can be visually recognized when folded at the folding part 21.
FIG. 7 (2) shows a cross-sectional view taken along the arrow GG in FIG. 7 (1). The cutting part 20a and the cutting part 20b are asymmetric with respect to the valley fold part 21, and form the cutting part 20a at a position where the printing part 13 is not concealed when folded at the valley fold part 21.
Moreover, the compression part 12b is not formed on the cutting part 20a, but is formed along the cutting part 20a close to the valley fold part 21.

FIG. 8A shows the pressure-bonded sheet 4 after pressure bonding, and shows a state when the printing unit 13 is arranged on the left side. FIG. 8 (2) represents a cross-sectional view taken along the line HH in FIG. 8 (1).
In the fourth embodiment, after printing, the compressed portion 12b is formed along the cutting portion 20b by a roller or the like, and after cutting at the cutting portion 20a and the cutting portion 20b, the pressure-sensitive adhesive layer is folded at the valley fold portion 21. 11 is crimped.
Since the cut portion 20a and the cut portion 20b are asymmetric with respect to the valley fold portion 21, one end of the base material 10 is shortened. In the fourth embodiment, the feeling in the vicinity of the cut portion 20a, which is a part of the concealed surface. The pressure-bonding layer 11 and the printing part 13 are exposed.

  After the manufacture, the pressure-bonding sheet 4 is sent to a recipient by mail or the like, and can be opened by being peeled off from the compression portion 12a or the compression portion 12b when the recipient opens. The adhesive force of the pressure-sensitive adhesive layer 11 by the compression parts 12a and 12b is such that there is a slight gap in the pressure-bonding surface of the pressure-sensitive adhesive layer 11 or weaker adhesive force than the pressure-bonding surfaces other than the compression parts 12a and 12b. It is crimped. Furthermore, when the base material 10 is compressed, the strength of the compression portion 12 with respect to the base material 10 is increased. Therefore, even if the base material 10 is easily broken due to scratches or breaks in the cut surfaces at the cutting portions 20a and 20b, the pressure-sensitive adhesive layer 11 does not spread when the base material 10 is peeled. It can be peeled from the adhesive surface between each other, and information on the concealed surface can be viewed

(Operational effect of the fourth embodiment)
As described above, according to the fourth embodiment, the surface of the pressure-sensitive adhesive layer 11 to be concealed can be printed without being restricted by design, personal information, or the like, and a paste killing agent or the like is used. Without this, a portion that weakens the effectiveness of the adhesive can be formed at the edge of the adhesive sheet. In addition, it can be sent as a postcard.

In addition, since the compressed portion 12 in which the base material 10 is compressed is stronger and more difficult to tear than the uncompressed base material 10, when the person who receives the pressure-bonding sheet 4 turns over from the compressed portion 12, cracks and Even if there is a scratch, the adhesive surface can be peeled off cleanly without spreading the tear.
A gap can also be formed in the compressed portion.

(Description of manufacturing method)
Below, the formation method of the through-hole 24 among the manufacturing methods of the crimping | compression-bonding sheet 2 is demonstrated.
The formation method of the through hole 24 may be a circular blade shape like the marginal punch 23, but the size and number of the through holes and the interval between the through holes are the size of the characters, the number of characters, the characters of the printing unit 13, and the like. It is desirable to form the substrate 10 by laser irradiation so that the base material 10 is folded at the valley fold portion 21 so that the printed portion 13 can be recognized through the through hole 24 in accordance with the interval between them.

(Cutting by laser irradiation)
As the laser irradiation means, YAG laser, carbon dioxide laser, ruby laser, etc. are used as laser light, and in particular, YAG laser has a short wavelength and can be focused on a minute spot, so finer processing is possible. Preferably used. A laser irradiation means can cut an object with an arbitrary shape and size to form a through hole and a corner cut portion.

An example of the laser irradiation means applied in the present embodiment will be described. First, laser light is condensed by a lens, and the printed material is irradiated onto the surface of the substrate. At that time, by adjusting the laser light irradiation conditions (beam diameter, power, scanning speed, etc.), the processing size of the through hole and the corner cut portion can be controlled, and the pressure sensitive adhesive around the through hole. The size of the heat-degraded region of the pressure-sensitive adhesive around the corner cut portion can also be adjusted. As described above, in the present invention, by performing laser irradiation, processing can be easily performed with high accuracy, good reproducibility, and without contact with the pressure-bonding sheet.

The laser irradiation means of this embodiment preferably uses a laser beam in an infrared region of about 0.9 to 11 μm, and the portion irradiated with the laser light is heated. The portion irradiated with the laser light is locally heated and cut by blowing off the portion in the liquid phase in a state exceeding the melting point of the portion.

Next, a method for forming the compression unit 12 will be described.
FIG. 10 is an example of forming the compression section 12 of the pressure-bonding sheet 2 according to the second embodiment. In FIG. 10, the base material 10 is a continuous sheet, and after the pressure-sensitive adhesive layer 11, the printing part (not shown), the cutting part 20, and the like are formed on the base material 10, The base member 10 and the pressure-sensitive adhesive layer 11 are compressed by rotating the roller 30 along the cutting portion 20 on one surface while rotating the roller 30 in accordance with the movement of the continuous sheet, thereby forming the compression portion 12a.

Thereafter, the continuous sheet is turned upside down at the front and back turning part 31, and then pressed by the roller 30 along the other cutting part 20 on the other side, so that the base 10 and the pressure sensitive adhesive are bonded. The layer 11 is compressed to form the compression portion 12b. When compressed, a substantially concave portion is formed, but the compression force is set so as to be a depression of about 50 to 400 μm, preferably about 200 μm, compared to before compression.

(Modification 1)
In the first to third embodiments, the roller 30 for forming the compression portion 12 has a disk shape and the pressing surface is a constant curved surface. However, the pressing surface and the pressing portion are arranged at regular intervals around the circumference. The provided gear shape or star shape may be used.
FIG. 11 is another example illustrating a roller for forming the compression unit 12.
FIG. 11A is a view of the roller used in Embodiment 1 as viewed from the side in the rotational direction.
FIG. 11 (2) is a diagram for explaining a gear-shaped roller provided with a pressing surface at regular intervals around the circumference.
FIG. 11 (3) is a diagram for explaining a star-shaped roller provided with pushing portions at regular intervals around the circumference.

In this case, as shown in FIG. 11 (1), when a roller having a disk shape is used, a substantially concave recess is formed in the base material 10 when the roller 30 a passes through the compression unit 12.

Further, as shown in FIG. 11 (2), when a roller having a gear shape in which a pressing surface is provided at regular intervals around the circumference and depressions (parts where the pressing surface is removed) is provided at regular intervals, the compression unit 12 is When the roller 30b passes, a substantially concave depression and a shallow depression having no depression or a substantially concave depression are alternately formed.

Furthermore, as shown in FIG. 11 (3), when a star-shaped roller provided with pushing portions at regular intervals around the circumference and grooves at regular intervals is used, the compression unit 12 is substantially concave when the roller 30c passes. And shallow depressions without or substantially concave are formed alternately. By using the roller 30c, compared with the roller 30b, the compression part which narrowed the space | interval of a more substantially concave shape and a hollow can be formed.

(Operational effect of modification 1)
While exhibiting the same operation effect as Embodiments 1-3, the following operation effect is produced by the added function. That is, by using a gear-shaped or star-shaped roller provided with a pressing surface or a pressing portion at regular intervals around the circumference, substantially concave depressions and no depressions, or substantially concave shallow depressions are alternately formed, When the pressure-sensitive adhesive layers 11 are overlapped and pressure-bonded, the portion with the depression is weakly bonded as compared with the pressure-bonding force of the portion without the depression. Therefore, the strong and weak portions appear alternately, and the compression portion It is possible to adjust the pressing force with respect to 12.

(Modification 2)
Although the roller was used in order to form the compression part 12 in Embodiment 1-3, a pressing die may be used.
FIG. 12 is an example illustrating a pressing die for forming a compression portion.
In this case, by using the pressing mold of FIG. 12, there is no substantially concave dent and dent similar to the case of using the gear-shaped roller 30b provided with the pressing surface at regular intervals in FIG. 11 (2), or Substantially concave shallow depressions are alternately formed.

FIG. 12 is an example of a pressing die for forming the compression part of the pressure-bonding sheet of Modification 2. By replacing the roller 30 shown in FIG. 9 or FIG. 10 with a permanent mold, the pressure-sensitive adhesive layer 11, the printing part (not shown), the cutting part 20 and the like are formed on the base material 10, and then the pressure-sensitive adhesive. The substrate 10 and the pressure-sensitive adhesive layer 11 are compressed by pressing against the surface of the layer 11 with a regular die at regular intervals.
When compressed, a substantially concave portion is formed, but the compression force is set so as to be a depression of about 50 to 400 μm, preferably about 200 μm, compared to before compression. It should be noted that the pressing interval of the main pressing die is determined from the speed in the traveling direction of the base material, and it is desirable that the previous pressing mark and the next pressing mark hardly overlap each other, thereby improving work efficiency.

(Operational effect of modification 2)
While exhibiting the same operation effect as Embodiments 1-3, the following operation effect is produced by the added function. In other words, the shape of the pressing portion of the pressing die is not limited to a flat surface, but may be a tooth shape having various shapes. Various shapes can be used.

(Modification 3)
In the first to third embodiments, the compression portion 12 of the pressure-bonding sheet is formed along the cutting portion 20, but may be formed in the corner portion 25.
The corner portion 25 is a post-manufactured pressure-sensitive adhesive sheet, and is a portion that indicates the start of opening as a trigger when the pressure-sensitive adhesive sheet is turned over at a part of the corner portion that becomes the corner of the outer edge portion. The corner portion 25 is a portion that weakens the effectiveness of the adhesive at the corner portion of the pressure-sensitive adhesive sheet so that a person who receives the pressure-bonded sheet can easily open the pressure-bonded sheet.

FIG. 13 is an example in which the compression part 12 is formed in the corner part 25. FIG. 13 shows a part of the substrate 10 in the pressure-bonding sheets 1 to 4, and the right side is omitted from the wavy line.
At least one corner portion 25 is provided at the end of the cutting portion 20. It is advisable to perform printing that indicates the start of opening so that the person who receives the pressure-bonding sheet can recognize the start position of turning.
For forming the corner portion 25, the compression portion 12 is formed along the cutting portion 20 using the roller 30 shown in FIGS. 9 and 10, and then a substantially triangular portion of the corner portion 25 is formed by a pressing die. Moreover, you may form the compression part 12 at once using the pressing die shown in the modification 2 (refer FIG. 12).

(Operational effect of modification 3)
While exhibiting the same operation effect as Embodiments 1-4, there is the following operation effect by the added function. That is, by forming the compression portion 12 in the corner portion 25, when the person who receives the pressure-bonding sheet turns off from the corner portion of the pressure-bonding sheet, the pressure-sensitive adhesive can be turned off from the corner portion 25 where the adhesive is weak. The surface of the agent can be removed cleanly.

(Modification 4)
In the first to third embodiments, the compression portion 12 of the pressure-bonding sheet is formed along the cutting portion 20, but may be formed in the corner cut portion 26.
The corner cut part 26 is a notch provided in a part of the corner part which becomes the corner of the outer edge part in the crimped sheet after manufacture. This is a part that weakens the effectiveness of the adhesive at the corner of the pressure-sensitive adhesive sheet so that a person who receives the pressure-sensitive adhesive sheet can easily start turning over the pressure-sensitive adhesive sheet.

FIG. 14 is an example of forming a compression part in a corner cut part. FIG. 14 (1) shows a state where the compression part 12 is formed in the corner cut part 26, and FIG. 14 (2) shows a state after cutting by the cutting part 20 and the cutting part 20c. FIG. 14 shows a part of the base material 10 in the crimping sheets 1 to 4, and the right side is omitted from the wavy line.
At least one corner cut part 26 is provided at the end of the cutting part 20. It is advisable to perform printing that indicates the start of opening so that the person who receives the pressure-bonding sheet can recognize the start position of turning.

For forming the corner cut portion 26, the roller 30 shown in FIGS. 9 and 10 is used to form the compression portion 12 along the cut portion 20, and then the substantially triangular shape of the corner cut portion 26 including the cut portion 20c. A pressing die is pressed against the portion to form the compression portion 12 of the corner cut portion 26 portion. Moreover, you may form the compression part 12 at once using the pressing die shown in the modification 2 (refer FIG. 1612).
Later, it cuts along the cutting part 20 and the cutting part 20c for forming a notch, and it folds by a folding part (21, 22), and pressure-bonds the pressure-sensitive-adhesive layers 11 mutually.
The cutting part 20c cuts in a straight line, but when the person who receives the crimping sheet turns over, the cutting part 20c may be scratched because the cutting part 20c is a straight line. It is even better if you can.

(Operational effect of modification 4)
While exhibiting the same operation effect as Embodiments 1-4, there is the following operation effect by the added function. That is, by forming the compression part 12 in the corner part 25, when the person who receives the pressure-bonding sheet turns off from the corner cut part of the pressure-bonding sheet, it can be turned off from the corner cut part where the effect of the adhesive is weak, The adhesive surface can be removed cleanly.

DESCRIPTION OF SYMBOLS 10 Base material 11 Pressure sensitive adhesive layer 12, 12a, 12b Compression part 13 Printing part 20, 20a, 20b, 20c Cutting part 21 Valley folding part 22 Mountain folding part 24 Through-hole 25 Corner part 26 Corner cut part

Claims (5)

A pressure-sensitive adhesive layer is provided on one surface of the base material, and the base material is a base material that is folded at one fold with the pressure-sensitive adhesive layer inside, and one base material is the other base material. Has an exposed surface extending from one side of the
A pressure-sensitive adhesive sheet, wherein a base material and a pressure-sensitive adhesive layer in a region on the exposed surface side of the one base material and including the exposed surface and straddling one side of the other base material are compressed. A pressure-sensitive adhesive layer is provided on both surfaces of the base material, and the base material is divided on the basis of the fold portion folded in a Z shape at two fold portions with the pressure-sensitive adhesive layer inside. Of the materials, the base material located in the center has an exposed surface extending from one side of each base material located at both ends,
The base material and the pressure-sensitive adhesive layer are compressed on the exposed surface side of the base material located at the center and straddling one side of each base material including the exposed surface and located at both ends. A crimping sheet. 3. The pressure-sensitive adhesive sheet according to claim 1, wherein a part of a surface that is folded and overlapped by the folding portion can be visually recognized after being pressed by a through-hole provided at a predetermined position of the base material. 3. The pressure-sensitive adhesive sheet according to claim 1, wherein the base material folded and overlapped at the folded portion has a short one end so that a part of the overlapping surface can be visually recognized after pressure bonding. 5. The pressure-bonded sheet is provided with a corner portion or a corner cut portion, and a base material and a pressure-sensitive adhesive layer located at the corner portion or the corner cut portion are compressed. The crimping sheet according to one item.

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