JP3756248B2 - Continuous form - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a continuous foam having transverse perforations used for various applications such as postcard paper, sealed paper, brochures, slips, etc., for example, a releasable pressure-sensitive adhesive layer formed for temporary bonding, Alternatively, the present invention relates to a pressure-sensitive adhesive continuous foam having a non-peelable or re-peelable pressure-sensitive adhesive layer formed for permanent adhesion. In particular, the present invention relates to a continuous foam that is less likely to block at the perforation when stacked in stock.
[0002]
[Prior art]
Currently, various types of continuous foams are used such as pressure-sensitive adhesiveness, heat-sensitive adhesiveness, rewet-type adhesiveness, or foams that do not have an adhesive layer therefor. Under such circumstances, a so-called pressure-sensitive adhesive foam, which is a pressure-sensitive adhesive continuous foam formed by applying a pressure-sensitive adhesive layer on one side or both sides of paper for re-peeling or permanent adhesion, is widely used. It is used. FIG. 12 is a plan view of one page of the conventional continuous pressure-sensitive adhesive foam 200 as viewed from the surface side. The pressure-sensitive adhesive foam 200 illustrated in the figure is a Z-folded postcard paper composed of a left piece 11, a middle piece 12, and a right piece 13. The zigzag folded page has a flow direction (vertical direction in the drawing). ), One unit of postcard paper is two-sided, and one page is a form composed of two units for convenience. Although the number of impositions depends on the size of one unit, the size of a postcard or the like is usually two-sided in consideration of the top and bottom limitations of the paper feed unit and paper discharge unit of the printer.
Then, horizontal perforations 31 and 32 are provided between the units. Among these, the horizontal perforations 31 are provided for separation between units in one page, and the horizontal perforations 32 are provided for separation and zigzag folding between pages, that is, between units across pages. Further, vertical perforations 33 are provided for Z-folding between each piece in one unit, and vertical perforations 34 are provided for separating the marginal portions 4 on both sides of the foam. As a matter of course, the horizontal perforation 31 for separating one unit of foam formed on two sides in one page is conventionally provided at a position that divides one page into two equal parts in the flow direction. . That is, the vertical size of each unit in one page in the figure is equal to c.
Such a pressure-sensitive adhesive form 200 is used by stacking a continuous form in a zigzag manner and stacking it in blocks as shown in FIG.
[0003]
[Problems to be solved by the invention]
By the way, when a pressure-sensitive adhesive layer is provided for re-peeling or permanent adhesion, it is usually provided on almost the entire surface of one side or both sides of the paper unless it is a sealed letter that adheres only to the periphery. Therefore, a pressure-sensitive adhesive layer is also formed at the position of the perforation. Also in the case of sealed letters, a pressure-sensitive adhesive layer is provided around the periphery because of the necessity of adhering the surroundings. There is also a form which provides a layer. As shown in the cross-sectional view of FIG. 6, the perforation is formed on the substrate 1 after the pressure-sensitive adhesive layer 2 is formed on the substrate 1 and then subjected to a mincing process including the pressure-sensitive adhesive layer 2. The eye 3 is formed, but at the same time, a burr 5 is generated (on the back side when the sewing machine is processed from the front side). When the pressure-sensitive adhesive foam is stocked, in the state where the zigzag folds are stacked in a block shape as shown in FIG. 5, the front side and the front side, the back side and the back side of the pressure-sensitive adhesive foam as shown in FIG. The side faces. As a result, the perforated part has a point contact between the opposite burrs in the relationship where the back side faces each other as shown in FIG. 8, and the weight of the foam tends to concentrate on the perforated part. As a result of applying a high pressure to the pressure-sensitive adhesive layer portion also formed on the portion, blocking on the back side is often observed. Note that even if the perforation is applied from the back side, burrs are generated on the front side, blocking occurs on the front side as well, and the burrs on the front side are the printing drum surface of the non-impact printer during printing. The possibility of scratching (a soft metal film such as photosensitive selenium is formed) is not desirable. Further, in the case of a foam specification in which the front surface side is a re-peeling surface and the back surface side is a permanent adhesive surface, the back surface side has a high adhesive force, so that blocking on the back surface side is likely to occur.
[0004]
FIG. 9 is a schematic explanatory diagram of a sewing machine, in which a sheet 71 on which a pressure-sensitive adhesive layer has been formed passes through a horizontal sewing machine section 72, a vertical shimine processing section 73, and a pressing processing section 74 in order, and the horizontal sewing machine and the vertical sewing machine are It is applied to the paper 71. FIG. 10 is a cross-sectional view illustrating the horizontal sewing machine processing portion of FIG. 10, and FIG. 11 is a cross-sectional view of the vertical sewing machine processing portion.
In the horizontal sewing process, as shown in FIG. 10, the paper 71 is perforated by a horizontal sewing blade 76 attached to a groove formed in the width direction of the rotary cylinder 75 and a hard chrome-plated impression cylinder 77. Since a groove blade can be used as the horizontal sewing blade 76, the burr of the horizontal perforation can be made relatively small by reducing the thickness of the groove blade.
On the other hand, as shown in FIG. 11, the disk-shaped vertical sewing machine blade 78 is generally of a small diameter, and the grooved blade cannot be used due to durability problems such as breaking the blade if it is thinned. . However, since the vertical perforation can be pressed, in order not to soil the drum of the printer, further pressing is performed to reduce the burr at the perforated portion.
[0005]
As described above, the perforation in the conventional pressure-sensitive adhesive foam is a method of pushing through the paper regardless of whether the perforation is vertical or horizontal perforation. Is inevitable to some extent. This burr causes a problem that blocking is likely to occur when zigzag folding is performed.
In addition, since there is no pressing process in the horizontal perforation, it is not possible to reduce the burr, and since this burr is picked up on the opened surface side or stacked, it is applied with a strong pressure, so it is joined with blocking If an object is to be peeled off, there is a problem of having a substantial adhesive force around the perforation and double feeding with a printer (NIP).
In addition, the above description has been described for a continuous foam with a pressure-sensitive adhesive layer, which is particularly prone to blocking, but when overlapping with zigzag folds, the problem that blocking is more likely to occur simultaneously with the overlapping perforations, It occurs even in a continuous foam in which the adhesive layer is not applied at all, or a continuous foam in which a heat-sensitive adhesive layer or a rewet-type adhesive layer is applied, because the fibers of the paper are entangled with each other.
[0006]
[Means for Solving the Problems]
Therefore, in the continuous form of the present invention, in the continuous form having a horizontal perforation and used by being stacked in a zigzag fold, the horizontal perforation is an inter-page horizontal sewing machine provided at equal intervals in a page unit to be zigzag folded. It comprises an eye (32) and an in-page horizontal perforation (31) provided in a page to be zigzag-folded, and the in-page horizontal perforation (31) is mutually positioned for each zigzag-folded page. By shifting the continuous foam in the flow direction, even if there are burrs in the perforated part, the burrs will not be completely aligned and facing each other. Adhesive layers such as an adhesive layer, a heat-sensitive adhesive layer, and a rehumidifying adhesive layer were prevented from adhering to each other so that blocking would not occur even when stocked in a zigzag fold. The pressure-sensitive adhesive layer that becomes the pressure-sensitive adhesive foam may be non-peelable or re-peelable.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the continuous foam of the present invention will be described. FIG. 1 is a plan view of one page of a form used for a post-folding paper to be Z-folded as one embodiment of the continuous form 100 of the present invention as viewed from the front side. The continuous foam 100 of the present invention shown in FIG. 1 is a foam in which the position of the horizontal perforation 31 in the flow direction is different from the conventional continuous foam 200 shown in FIG.
That is, the continuous form 200 of the present invention illustrated in the figure is a Z-folded postcard paper composed of a left piece 11, a middle piece 12, and a right piece 13, and a zigzag fold includes a flow direction (drawing) on one page. In the vertical direction, one unit of the postcard paper is two-sided, and one page is a form composed of two units for convenience. Horizontal perforations 31 and 32 are provided between each unit. Among these, the horizontal perforations 31 are provided for separation between units in one page, and the horizontal perforations 32 are provided for separation and zigzag folding between pages, that is, between units across pages. Further, vertical perforations 33 are provided for Z-folding between each piece in one unit, and vertical perforations 34 are provided for separating the marginal portions 4 on both sides of the foam.
In the present invention, as the horizontal perforation provided in one page, the horizontal perforation 31 is provided at a position slightly shifted from the position where one page is divided into two equal parts in the flow direction. That is, the size a of the upper unit in the top direction in page 1 and the size b of the lower unit in the top direction are a ≠ b and are not equal.
In the case of removable postcard paper, a removable pressure-sensitive adhesive layer is applied to a predetermined surface (not shown).
[0008]
The continuous foam is zigzag folded as shown in the perspective view of FIG. 2 and stacked in a block shape as shown in FIG. FIG. 3 is an explanatory diagram showing that the horizontal perforations do not overlap each other when zigzag folding is performed. In the conventional continuous form, the horizontal perforations 31 overlap each other as shown in FIG. 3B, but in the continuous form of the present invention, as shown in FIG. 3A, the perforations are shifted in the horizontal direction in the drawing. 31 do not overlap.
The amount of shifting the horizontal perforation depends on the size of the burr, but it is more reliable if the distance between the shifted horizontal perforations is at least about 0.5 mm, preferably about 1 to 2 mm, more preferably about 3 mm. The anti-blocking effect is obtained. As shown in FIG. 8, the burr has a width that depends on the width of the perforation and the paper thickness. If the burr is shifted by this width, the cut paper portions at the opposite burr portions do not contact each other. . Therefore, in order to shift the burr width by at least the width of the normally used paper and perforation, it is preferable to keep the distance between the horizontal perforations at least about 0.5 mm.
Shifting the horizontal perforation means that, in the case of two-sided layout, the top and bottom unit forms of the top and bottom unit sizes are conventionally set to the same size but different sizes. Accordingly, two types of unit foams having slightly different top and bottom sizes can be obtained from one continuous foam. However, since the blocking prevention effect can be obtained even if the amount of shifting is not so large, there is no practical problem. For example, if the top and bottom are 6-inch (152.4 mm) postcard paper, if the upper side is +0.5 mm and 152.9 mm, the lower side is -0.5 mm and 151.9 mm. In this case, the horizontal perforations at the time of zigzag folding are shifted by 0.5 mm from each other. As a result, the distance between the horizontal perforations can be doubled to 1.0 mm. However, there is a wide range of sizes that can be accepted as postcard paper, and there is no problem with this size. In addition, even when processing such as printing and sealing using this continuous form to make a postcard, etc., since it is processed in the state of continuous form, the printing position etc. are not changed, and the final In addition, since the top and bottom sizes are only slightly different (1.0 mm in the above example) when separated into one unit of foam (such as a postcard), it can be used without any problem in terms of use of the foam.
[0009]
Further, in order to provide such a slightly perforated lateral perforation, the device can be used as it is if some modifications are made to the existing sewing machine. An example is shown in FIG.
FIG. 4 is an explanatory view in which the horizontal sewing machine blade 76 is displaced and fixed to the rotary drum 75 used in the horizontal sewing process described with reference to FIGS. 9 and 10. In the figure, the fixing positions of the two horizontal sewing machine blades 76 fixed to the circumference of the rotary drum 75 will be described. One rotation of the rotary cylinder 75 corresponds to one page of the foam. The rotary drum 75 is provided with two grooves 79a and 79b having the same size. Conventionally, the horizontal sewing machine blade 76 is fixed to the center position of the grooves. However, in the case of the continuous foam of the present invention, as shown in the figure, in the groove 79a on the upper side of the drawing, the horizontal sewing blade 76a is fixed to the left side of the drawing with the pressing metal 8a. On the other hand, in the groove 79b on the lower side of the drawing, the horizontal sewing machine blade 76b is similarly fixed to the left side of the drawing with a pressing metal fitting 8b. As a result, the size between the horizontal perforations determined by the distance between the horizontal shimine blades 76a and 76b is b on the left side of the drawing, where a ≠ b, and a> b if the right side of the drawing is a.
If the horizontal perforations at the time of zigzag folding are shifted by 0.3 mm from each other and the distance is 0.6 mm, the amount by which the horizontal sewing blade is shifted in the groove is 0.3 mm, and the opposing horizontal sewing machine If the distance between the eyes is 1.0 mm, it is sufficient that the amount of shift of the horizontal sewing blade in the groove is only 0.5 mm.
[0010]
FIG. 4 illustrates that the mechanical method of shifting the horizontal perforation in the sewing process can be handled by a conventional processing apparatus. However, the presser fitting shown in FIG. Of course, other methods may be used. For example, in actuality, when the horizontal shimin blade is fixed to the groove, there is a form in which the horizontal sewing blade is set in the groove of the holder having a U-shaped long groove and then the holder is fixed to the groove. In that case, it may be fixed by inserting a pressing bracket on one side between the holder and the horizontal sewing machine blade or between the rotating drum and the holder, or by making the thickness of both pressing brackets uneven. .
In addition, according to the presser fitting or the like, it is possible to easily adjust the sewing machine to the conventional position without shifting the horizontal perforation.
Further, as a method not using such a pressing metal, it is also possible to control the rotation of the rotary drum with a servo motor or the like and to shift the timing at which the horizontal sewing machine blade perforates. In this case, it is not necessary to shift the fixing of the horizontal sewing machine blade to the rotary drum.
[0011]
As described above, the continuous foam of the present invention is particularly characterized by the position of the horizontal perforation. Therefore, if the other part, for example, a pressure-sensitive adhesive layer, a heat-sensitive adhesive layer, a rehumidifying adhesive layer or the like is applied, the pattern shape of the adhesive layer, its material, etc. are arbitrary, Any conventionally known one may be used.
For example, in the case of a pressure-sensitive adhesive continuous foam, in FIG. 1, a pressure-sensitive adhesive layer is provided on the entire back surface of each of the left piece, the middle piece, and the right piece on the back side, and the left piece on the front side. 11 is an address field on the Z-folded postcard paper, and is not used even if the pressure-sensitive adhesive layer is formed, so that only the middle piece 12 and the right piece 13 are formed.
Or when it is set as re-peelability, the pattern shape of a pressure-sensitive adhesive layer is an adhesion plan side (in FIG. 1, the surface side of the middle piece 12 and the right piece 13, and the back surface side of the left piece 11 and the middle piece 12). It is normal to have a shape that is almost the entire surface, but a pattern shape that is not almost the entire surface, for example, a circular non-formed part is provided inside the square pressure-sensitive adhesive layer, and "struck", "displaced", etc. It is arbitrary as a partial and planar shape such as a lottery in which concealment information is described.
Alternatively, when the inside of a sealed letter or the like is not bonded and only the periphery is bonded, the pattern shape of the pressure-sensitive adhesive layer formed only around the periphery is obtained.
[0012]
Next, the constituent material of the continuous foam of this invention is demonstrated. In the continuous foam of the present invention, as described above, the adhesion mechanism of the adhesive layer such as the base material and the pressure-sensitive adhesive layer is not particularly limited, and the re-peelable pressure-sensitive adhesive or Conventional adhesives and the like can be used.
[0013]
For example, as the base material 1, conventionally known paper such as NIP (non-impact printer) paper, synthetic paper, or resin films such as polypropylene resin, cellulose resin, polyester resin, and vinyl chloride resin are used. , Nonwoven fabrics, and composites thereof.
[0014]
When the pressure-sensitive adhesive layer 2 is provided, a conventionally known re-peelable pressure-sensitive adhesive may be used as long as it is re-peelable. For example, there is a re-peelable pressure-sensitive adhesive comprising a conventionally known NR (natural rubber) -based pressure-sensitive adhesive and an adhesive main agent and a filler such as silica or starch. Further, even in the case of non-peelability, a conventionally known non-peelable pressure-sensitive adhesive or adhesive may be used.
For example, in the case of a releasable pressure-sensitive adhesive layer, as the adhesive main agent, in addition to natural rubber (NR), acrylic modified natural rubber (PMMA-NR), styrene-butadiene rubber (SBR) and carboxy modified SBR (XSBR) ), Acrylonitrile-butadiene rubber (NBR) rubber latex, or acrylic resin latex such as polyacrylate. In addition to the above, examples of the filler include inorganic fillers such as silica and talc, or organic fillers such as resin particles such as polystyrene and acrylic resin.
Then, the pressure-sensitive adhesive layer is formed on the entire surface or a part thereof by using a re-peelable or non-peelable pressure-sensitive adhesive composition as an ink by printing means such as gravure printing, flexographic printing, or the like. As a liquid, it is provided by coating the whole surface or a part by gravure coating or the like.
[0015]
In the continuous foam of the present invention, when an adhesive layer is provided, it may be a heat-sensitive adhesive layer or a rewet adhesive layer. As the heat-sensitive adhesive layer and the rehumidifying adhesive layer, any conventionally known one may be used. For example, as the heat-sensitive adhesive layer, a heat-sensitive adhesive such as vinyl acetate resin such as ethylene-vinyl acetate copolymer, polyester resin, acrylic resin, polyethylene, polypropylene, and wax is used. Water-soluble adhesives such as polyvinyl alcohol, gelatin, glue, gum arabic, dextrin and modified starch are used. In addition, various additives such as titanium oxide, silica, calcium carbonate, kaolin, clay, starch filler, or tackifier are appropriately blended with these components in order to adjust adhesion and the like. Each of these adhesive layers may or may not be removable.
[0016]
Alternatively, the continuous foam of the present invention forms an adhesive layer between an adhesive layer such as a pressure-sensitive adhesive layer, a heat-sensitive adhesive layer, a rewet adhesive layer, and the substrate, that is, on the substrate under the adhesive layer. Before printing, a form in which printing is performed may be used.
In addition, the continuous form of the present invention has been described by taking Z-folded postcard paper as an example. However, as long as there is a horizontal perforation at a position facing when zigzag folding is performed, it is not limited to postcard paper, Use is arbitrary. In addition to the Z-fold type, the folding type is a conventional type such as a three-fold type, a four-fold type, a two-fold type, or a half-fold type in which one of the facing paper pieces is half the size of the other, 1/3, etc. It can take various known forms.
In the continuous foam of the present invention, these adhesive layers may be omitted. Even when there is no adhesive layer, it is possible to effectively prevent blocking due to the entanglement of the fibers of the paper at the burr portion.
[0017]
【Example】
The surface of the right piece and the middle piece used as the re-peeling surface of this base material using NIP fine paper (Nippon Paper Industries Co., Ltd., Excellent Foam <90>) as the base material of the continuous foam used as the Z-folded postcard paper After the concealment information is offset printed on the side, a pressure-sensitive adhesive layer is formed on both sides of the substrate including the perforated part by gravure printing of the re-peelable adhesive having the following composition, And a vertical perforation, and the horizontal perforations in the page are arranged so that the distance between them is shifted by 1 mm in the flow direction when zigzag folding. As shown in FIG. 1, as a releasable pressure-sensitive adhesive foam A continuous foam of the present invention was obtained. Even when this continuous foam was stacked in a zigzag fold, no blocking occurred at the perforation.
[0018]
Re-peelable pressure-sensitive adhesive Adhesive agent: Soap-free emulsion polymerization NBR latex 20 parts by weight (manufactured by Nippon Zeon Co., Ltd., SX1503, solid content 43%)
Filler: Cross-linked polystyrene resin particles (average particle size 6 μm) 3 parts by weight (manufactured by Sumitomo Chemical Co., Ltd., PB30006E, solid content 82%)
Diluting solvent: isopropyl alcohol appropriate amount [0019]
【The invention's effect】
According to the continuous foam of the present invention, since the horizontal perforations facing each other when stacked in a zigzag folded state at the time of stock are shifted, the foams are entangled or bonded to each other at the horizontal perforation portion to cause blocking. I can prevent it. Therefore, it is excellent in processing suitability such as printing. This is particularly effective when a pressure-sensitive adhesive foam having a re-peelable or non-peelable pressure-sensitive adhesive layer is applied.
[Brief description of the drawings]
FIG. 1 is a plan view of one page of Z-folded postcard paper as viewed from the front side as an example of a continuous form of the present invention.
FIG. 2 is a perspective view showing a state in which the continuous form of FIG. 1 is zigzag folded.
FIG. 3 is an explanatory diagram of zigzag folding in which horizontal perforations do not overlap each other. (A) is the present invention, (b) is a conventional configuration.
FIG. 4 is an explanatory view in which a horizontal sewing machine blade is shifted by a presser fitting and fixed to a rotary drum.
FIG. 5 shows a state in which foams are stacked in a zigzag fold when stocking.
FIG. 6 is a cross-sectional view for explaining a burr generated at a perforation portion.
FIG. 7 is a diagram for explaining details when stocked by stacking zigzag folds as in FIG. 3;
8 is a cross-sectional view for explaining a state where the perforation portion is folded in FIGS. 3 and 5. FIG.
FIG. 9 is a schematic explanatory diagram of a sewing machine processing apparatus.
FIG. 10 is an explanatory view of a horizontal sewing machine processed portion in the apparatus of FIG. 7;
11 is an explanatory view of a vertical sewing machine processing portion in the apparatus of FIG. 7;
FIG. 12 is a plan view of a Z-folded postcard sheet as an example of a conventional continuous form as viewed from the front side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base material 11 Left piece 12 Middle piece 13 Right piece 2 Pressure sensitive adhesive layer 3 Perforation 31 Horizontal perforation (inside page)
32 Horizontal perforations (between pages)
33 Vertical perforation 4 Marginal portion 5 Burr 6 Sewing blade 71 Paper 72 Horizontal sewing processing portion 73 Vertical sewing processing portion 74 Holding processing portion 75 Rotary drum 76, 76a, 76b Horizontal sewing blade 77 Pressure drum 78 Vertical sewing blade 79a, 79b Groove 8 Holding metal 100 Continuous form of the present invention (in the case of Z-folded postcard paper)
200 Conventional continuous form (for Z-fold postcard paper)
a, b, c Size in the vertical direction for one unit within one page

Claims (5)

Have a transverse perforation in a continuous form to be used in stacked folded zigzag, the transverse perforations and the transverse perforations between pages provided at equal intervals on the page units folded zigzag, the page is folded zigzag The continuous form is characterized in that the horizontal perforations in the page are provided so as to be shifted from each other in the flow direction of the continuous form for each page to be zigzag-folded .   The continuous foam according to claim 1, which has a pressure-sensitive adhesive layer and is pressure-sensitive adhesive.   The continuous foam of claim 2, wherein the pressure sensitive adhesive layer is removable.   The continuous foam of claim 2, wherein the pressure sensitive adhesive layer is non-peelable.   The continuous foam according to any one of claims 1 to 4, which is a postcard paper.

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