WO2013165016A1

WO2013165016A1 - Sticky paper and sticky paper water treatment device

Info

Publication number: WO2013165016A1
Application number: PCT/JP2013/062726
Authority: WO
Inventors: 裕之中川
Original assignee: 旭加工紙株式会社
Priority date: 2012-05-01
Filing date: 2013-05-01
Publication date: 2013-11-07
Also published as: JP5758840B2; JP2013231256A

Abstract

Provided is a sticky paper comprising a print paper which is a substrate, a remoistening adhesive layer which is disposed on one face of the print paper, and a surface processing agent layer which is disposed on the other face of the print paper. This surface processing agent layer prevents curling of the sticky paper owing to stretching of the print paper caused by moisture. A device which automatically carries out a treatment of the sticky paper with water comprises: a supply shelf in which it is possible to stack a plurality of sheets of the sticky paper whereon a plurality of label units is printed in a paper supply direction; a conveyance means for extracting the sticky paper one sheet at a time from the supply shelf and supplying said sticky paper; a cutter means for cutting the conveyed sticky paper into units of one label in a direction which is orthogonal to the conveyance direction; and a water treatment means for treating with water the remoistening adhesive layer of the label which is cut into a single unit.

Description

Sticking paper and watering device for sticking paper

The present invention relates to an adhesive paper, in particular, an adhesive paper coated with a rewet adhesive and a watering device therefor.

For pasting paper such as current stickers and labels, the adhesive paper is applied on one side of the printing paper that is the base material of the sticking paper, and the release paper is laminated on it. There are two types of coatings. The share of these global markets is 99% for the former and 1% for the latter. The main reason is that in the case of sticky paper using a sticky adhesive, simply remove the release paper covering the sticky adhesive to expose the adhesive surface, and to adhere to the adherend such as a packaging box. It can be used easily because it can be attached to a position, whereas in the case of adhesive paper using a rewet adhesive, a series of adhesive papers that are supplied in series are manually operated. For example, it takes time and effort to separate the sheets one by one, attach water to the adhesive surface for each sheet, and then adhere to a predetermined position of the adherend.

However, with adhesive paper using adhesive adhesive, not only is the cost of the adhesive high, but the release paper that has been peeled off before the adhesive paper is attached to the adherend must be discarded and incinerated as waste. However, incineration causes a large amount of CO ₂ emission, which is a big problem from the viewpoint of preventing global warming. This problem is especially acute in companies that consume large amounts of packaging boxes.

Therefore, the present inventor reconsidered that the pasting paper using the rehumidifying adhesive, which was conventionally costly due to the above inconvenience in use, is inherently low in cost, and has the conventional drawbacks. We focused on taking advantage of the original function of resolving the poor work efficiency such as watering manually, which led to an increase in its use and, above all, being collected after use and recycled as recycled paper.

In general, in order to manufacture a sticky paper using a re-wetting adhesive, a re-wetting adhesive is applied to one side of a printing paper having a width of 1 m and a length of 8000 m, which is spread on a long net paper machine, and 2000 m each on a jumbo roll. Wind up. Further, the jumbo roll is slit into, for example, a width of 10 cm, divided into lengths of 500 m, wound around a small roll, and characters and figures are printed while unwinding the wound printing paper. In addition to offset printing on a lithographic plate, this printing includes printing on a rotary press, sealing using a seal printer, and label printing.

Adhesive paper using such a conventional rewet adhesive is provided with a rewet adhesive layer on one side of the printing paper, and with various printed layers such as letters and figures on the other side, Because it was used for labels, etc., the rewet adhesive layer shrunk by the heat roll in the printing press during the printing, and the sticking paper curled (heat curled) with the rewet adhesive layer inside, and printing Later, there was an inconvenience that the printing paper was stretched by moisture in the atmosphere and the sticking paper was further curled.

This curl is usually considered to occur in a direction perpendicular to the paper running direction because many paper fibers are arranged in the paper running direction (longitudinal direction) in the paper machine (Mitsubishi Heavy Industries Technical Report Vol. 34). "Research on thermal mass transfer and paper deformation in paper layers").

Before sticking the sticking paper to a predetermined part of the adherend such as a cardboard box, it is necessary to water the rewet adhesive layer, but if the sticking paper is curled, the paper will be fed. Since distortion occurs in the direction, there is a problem that water cannot be mechanically transported and watered.

As a prior art, JP-A-57-70537 (JP-57-70537-A) discloses that when rewet adhesive paper is used in a printer, adhesion to a heat roll that has become hot in the printer and a heat curl phenomenon. In order to prevent this, a re-wet adhesive paper for a printer in which a synthetic polymer re-wetting adhesive, a wet heat adhesion inhibitor, and a heat curl regulator are applied to one side of a support paper (printing paper) is described. However, in the present invention, as in the present invention described below, a sticking paper provided with a rehumidifying adhesive layer on one side of a printing paper and a surface treating agent layer on the other side, and the sticking paper The purpose of preventing the curling of the sticking paper is to prevent the sticking paper from being curled by a device that allows the water to mechanically adhere to the re-wettable adhesive layer and attach it to a predetermined part of the adherend such as a packaging box. Different. Furthermore, the configuration in which a heat curling agent or the like is applied to the support paper in a layered manner is also different from the present invention, which is complicated and costly.

JP-A-57-70537 (Patent No. 1752749)

The present invention relates to a heat curl in which a rehumidifying adhesive layer shrinks due to heat during printing, or a printing paper expands and curls due to moisture in the atmosphere in an adhesive paper provided with a rehumidifying adhesive layer on the printing paper. It is intended to prevent water and to allow mechanical watering. As a result, a large amount of adhesive paper using a re-wettable adhesive that can be recovered later and used as recycled paper can be used, and resources can be used effectively.

Another object of the present invention is to provide a watering device for sticking paper that can be mechanically watered to such sticking paper.

According to the present invention, an adhesive paper comprising a printing paper as a base material, a rewet adhesive layer provided on one side of the printing paper, and a surface treatment agent layer provided on the other side of the printing paper. And the said surface treatment agent layer prevents the curling of the adhesive paper by the expansion | extension of the printing paper by moisture, The adhesive paper characterized by the above-mentioned is provided.

Further, according to the present invention, a supply shelf capable of stacking a plurality of the above-mentioned sticky papers on which a plurality of units of labels are printed in the paper feeding direction, and a transport for pulling and feeding the sticky papers one by one from the supply shelf. Means, cutter means for cutting the transported adhesive paper in units of one label in a direction perpendicular to the transport direction, and water attachment for attaching water to the re-wettable adhesive layer of the label cut in one unit An apparatus for watering a sticky paper comprising a means is provided.

According to the sticking paper of the present invention, a surface treatment agent layer is provided on the surface of the printing paper opposite to the surface on which the rewet adhesive layer is provided, and the surface treatment agent is applied on the surface treatment agent layer. The stretch ratio of both sides of the sticking paper is made uniform by the layer, and curling of the whole sticking paper due to elongation of the printing paper due to moisture in the atmosphere can be prevented. By preventing curling in this way, the adhesive paper of the present invention can be smoothly fed from a supply shelf by a conveying means such as a roll when mechanically applying water to the rewet adhesive layer. it can.

Also, the surface treatment agent layer can prevent heat curling of the sticking paper caused by heat shrinkage of the rehumidifying adhesive layer when passing through a rotary press or the like. By preventing such heat curl, the adhesive paper of the present invention is further smoothly fed from a supply shelf by a conveying means such as a roll when mechanically watering the rewet adhesive layer. be able to.

According to the watering device for sticking paper of the present invention, a plurality of the sticking papers of the present invention in which a plurality of units of labels are printed in the paper feeding direction are stacked on the supply shelf, preventing curling as described above. Each of these sticky papers is pulled out and fed one by one by the transport means, and the sticky paper is cut into one unit of label in the direction orthogonal to the transport direction by the cutter means, and further the label cut into one unit By applying water to the rewet-adhesive adhesive layer with watering means, a label or a seal can be easily attached to a predetermined portion of an adherend such as cardboard.

It is explanatory sectional drawing which gave the printing layer to the sticking paper of this invention. It is explanatory sectional drawing of the watering apparatus of the sticking paper of this invention. It is the left perspective view which abbreviate | omitted the label cutter of the watering apparatus of FIG. It is a top view of the display board which operates the apparatus of FIG.2 and FIG.3.

The sticking paper of the present invention will be described with reference to FIG. The sticking paper 5 of the present invention includes a printing paper 1 as a base material, a rewet adhesive layer 2 provided on one surface of the printing paper 1, and a surface treatment agent layer provided on the other surface of the printing paper 1. 3.

As the substrate, printing paper 1 made of fine paper, coated paper, or art paper can be used.

The rewet adhesive layer 2 can be formed by applying a rewet adhesive to one side of the printing paper 1. Examples of the rewet adhesive include vinyl acetate polymer, a mixture of partially saponified product (saponification degree mol: 86.5 to 89%), polyvinyl alcohol (PVA) and dextrin, wheat starch, acrylic copolymer resin, Alternatively, an acrylic composite resin or the like can be used. 40% by weight of the solid content of such a rewet adhesive is dissolved in 60% by weight of water to form a solution, and one side of the printing paper 1 is formed so that the solid content per 1 m ² is 8 to 20 g, preferably 12 to 14 g. By applying to the surface, the rewet adhesive layer 2 can be formed.

The surface treatment agent layer 3 can be formed by applying a surface treatment agent to the surface of the printing paper 1 opposite to the surface on which the rewet adhesive layer 2 is provided. The surface treatment agent layer 3 prevents the printing paper 1 from stretching due to moisture and curling of the sticking paper 5, and more preferably prevents heat curl due to shrinkage of the rewet adhesive layer 2. To do. As the surface treating agent, polyvinyl alcohol (PVA), oxidized starch, acrylic copolymer resin, acrylic composite resin, or the like as a completely saponified product (saponification degree mol: 98 to 99%) can be used. . Such a surface treatment agent having a solid content of 10% by weight dissolved in 90% by weight of water to form a solution is printed so that the solid content per 1 m ² is 0.8 g to 5 g, preferably 0.8 g to 1.2 g. The surface treatment agent layer 3 can be formed by applying to the surface of the paper 1 on which the rewet adhesive layer 2 is not provided.

On the surface treatment agent layer 3, various printing layers 4 such as letters and figures can be applied.

As described above, the adhesive paper 5 of the present invention is provided with the surface treatment agent layer 3 on the surface of the printing paper 1 opposite to the surface on which the rewet adhesive layer 2 is provided. This prevents the sticking paper 5 from curling due to the printing paper 1 being stretched by moisture in the atmosphere after the manufacture of the paper.

Preferably, the surface treatment agent layer 3 prevents heat curling due to heat shrinkage of the rewet adhesive layer 2 when the adhesive paper 5 is printed. That is, in view of the heat shrinkage rate due to heat curl of the re-wettable adhesive layer 2 and the elongation rate of the printing paper 1 due to moisture in the atmosphere, the expansion / contraction rate on both sides of the sticking paper 5 is made substantially uniform.

Next, with reference to FIG. 2 to FIG. 4, the watering device for sticking paper of the present invention will be described. As shown in FIG. 2, the sticking paper watering device 21 stacks a plurality of the sticking papers 5 of the present invention in which a plurality of units of labels, stickers, etc. are printed at regular intervals in the paper feeding direction indicated by the arrows. Possible supply shelves 6, drive rollers 7 and 7 'and guide rollers 8 and 8' as conveying means for pulling out the sticking paper 5 one by one from the supply shelf 6 and conveying them in the direction of the arrow, A label cutter 9 that cuts the paper 5 in units of one label in a direction perpendicular to the conveyance direction, and a watering brush 10 that attaches water to the re-wettable adhesive layer 2 of the label 5 ′ cut into one unit. With. With such a configuration, it is possible to obtain one unit of a label 5 ′ in which water is applied to the rewet adhesive layer 2 that can be attached to a predetermined portion of the adherend.

As the supply shelf 6, a supply shelf that is used as a well-known technique in a copying machine, a facsimile machine, or the like and is inclined downward in the sheet feeding direction can be used.

The operation of the drive rollers 7, 7 'and / or the guide rollers 8, 8', the label cutter 9, and / or the watering brush 10 can be set to automatic or manual intermittent motion. In order to perform such setting, an auto / manual setting button 13 can be provided on a display board (FIG. 4) provided at an appropriate location of the watering device 21. When manual operation is selected by a manual button, the watering device 21 is provided with a manual sensor 19, and the adhesive paper 5 is supplied one by one from the supply shelf 6 by holding the hand over the sensor 19. Can be.

The feeding speed of the sticking paper 5 by the driving rollers 7 and 7 'and / or the guide rollers 8 and 8' can be selected from low, medium and high. In order to make such a selection, low, medium and high speed adjustment switches 14 can be provided on the display board.

In the watering device 21, the sticking paper by the driving

rollers

7, 7 ′ and the

guide rollers

8, 8 ′ is printed according to the length of the label printed in a plurality of units in the feeding direction of the sticking paper 5 In order to set the feed length of 5, it is possible to provide means for setting the label length and means for finely adjusting the length setting. In order to perform such setting, a label length setting button 15 and a label length fine adjustment button 16 can be provided on the display board.

In addition, a sheet number counter that counts the number of cut labels each time the sticking paper 5 is cut into one label unit 5 ′ by the label cutter 9 may be provided in the watering device 21. In order to display the counted number of sheets, a number display section 17 may be provided on the display board, and a number clear button 18 for resetting the number display section 17 and clearing the display number to zero may be provided. .

Example 1
A preferred embodiment of the adhesive paper of the present invention will be described with reference to FIG. The sticking paper 5 uses printing paper 1 made of high-quality paper as a base material. On the entire lower surface of the printing paper 1, as a rewet adhesive, a solution in which 40% by weight of a vinyl acetate polymer is dissolved in 60% by weight of water is applied as a solid content of 10 g per 1 m ^2. Is formed. Further, a solution obtained by dissolving 10% by weight of polyvinyl alcohol (PVA), which is a completely saponified product, in 90% by weight of water as a surface treatment agent is applied to the entire upper surface of the printing paper 1 as a solid content of 1 g per 1 m ^2. A treatment agent layer 3 is formed. On the surface treatment agent layer 3, a printing layer 4 on which characters “Caution on broken objects” are printed is provided.

In the sticking paper 5 obtained in this way, the curling phenomenon due to moisture did not occur during standby after finishing.

Example 2
A preferred embodiment of the watering device for sticking paper of the present invention will be described with reference to FIGS. As shown in FIG. 2, the sticking paper watering device 21 is configured to place the sticking paper 5 on which the labels of 5 units are continuously printed in the paper feeding direction indicated by the arrows on the inclined supply shelf 6. Multiple sheets are stacked. In front of the supply shelf 6, a pair of upper and

lower drive rollers

7 and 7 ′ and a pair of upper and

lower guide rollers

8 and 8 ′ are disposed in front and rear as conveying means. A label cutter 9 that moves up and down at predetermined intervals is provided in front of the

guide rollers

8 and 8 ′, and the sticker paper 5 is cut into one unit (one sheet) of the label 5 ′ by the cutter 9. At the same time as or before the cutting, water is applied to the re-wettable adhesive layer 2 on the lower surface of the label 5 ′ by the watering brush 10.

FIG. 3 is a perspective view of FIG. 2 as viewed from the upper left. In this figure, a water tank 11 for supplying water to the watering brush 10 and a manual used for manually operating the watering device 21 are shown. A sensor 19 is shown. By holding the hand over the sensor 19 during manual operation of the apparatus 21, the sticky paper 5 is fed one by one from the supply shelf 6.

FIG. 4 shows a display board provided at an appropriate location of the watering device 21 shown in FIGS. The display board includes an operation switch 12 for switching START (start) and STOP (stop) of the watering device 21, drive rollers 7, 7 ', guide rollers 8, 8', label cutter 9, and watering brush. An automatic / manual setting button 13 is provided which can select automatic or manual when the controller 10 is intermittently moved by a controller (not shown). By selecting and touching this, the driving rollers 7, 7 ', the guide rollers 8, 8', the label cutter 9, and the watering brush 10 are intermittently operated automatically or manually. The display board also has a feed speed selection button that allows you to select the conveyance speed of the adhesive paper 5 from low speed (2 to 3 cm per second), medium speed (4 to 5 cm per second), and high speed (6 to 7 cm per second). 14 is provided. Further, the length in the paper feeding direction may vary depending on the type of the label 5 ′ printed on the sticker paper 5, and therefore the label length setting switch 15 for setting the length of the label 5 ′ and the paper feeding direction. A label length fine adjustment switch 16 for finely adjusting the length of the label 5 ′ is provided on the display board, and the feed length of the sticking paper 5 can be adjusted. The number cutter 17 resets the number display unit 17 for displaying the number of sheets counted by the number counter every time the sticker 5 is cut into one unit of the label 5 'by the label cutter 9, and the number of displayed sheets is reset. A clear number button 18 is provided on the display board for clearing to zero.

Next, the operation of the watering device for sticking paper of the present invention will be described. First, press the START button of the operation switch 12 consisting of START (start) and STOP (stop) on the display board, and use the auto / manual setting button 13 to select the operation method from auto (manual) or manual (manual). To do. When the auto button is pressed, the watering device 21 is automatically operated, and the sticking paper 5 is intermittently fed from the supply shelf 6. When the manual button is pressed, the watering device 21 is manually operated. In particular, by holding the hand over the manual sensor 19, one sheet of the sticky paper 5 is fed from the supply shelf 6. On the supply shelf 6, a plurality of sticky papers 5 on which labels are continuously printed at a predetermined interval in the paper feeding direction (from right to left in FIG. 2) are stacked. Here, the sticking paper guide 20 provided on the supply shelf 6 is matched with the width of the sticking paper 5 (the length in the direction perpendicular to the paper feeding direction), and perpendicular to the paper feeding direction of the sticking paper 5. Position the direction. Further, the label length setting button 15 and the label length fine adjustment button 16 are arranged so that the sticking paper 5 can be cut by one unit of the label 5 ′ according to the length of the label in the feeding direction of the sticking paper 5. Thus, the feed length of the sticking paper 5 is set.
Next, the sticking paper 5 is pulled out from the supply shelf 6 one by one by the driving rollers 7 and 7 ', and conveyed from the right to the left in FIG. 2 by the guide rollers 8 and 8'. In this case, since the plurality of sticking papers 5 of the present invention are prevented from curling at right angles to the traveling direction of the paper fibers of the printing paper 1 by the surface treatment agent layer 3, they are smoothly conveyed. Can do.
A sensor (not shown) detects a hole or a printed mark (not shown) provided between the plurality of labels 5 ′ printed on the conveyed sticking paper 5 and at the edge of the sticking paper 5. Then, the conveyance of the sticking paper 5 is temporarily interrupted at that position, the label cutter 9 is lowered, and it is cut into one unit (one sheet) of the label 5 ′.
The cut label 5 ′ is in a state where water is applied to the rewet adhesive layer 2 by the waterbrushing brush 10 and is attached to the surface of the cardboard box as the adherend.

The adhesive paper of the present invention has a surface treatment agent layer formed on the surface of the printing paper opposite to the surface on which the rewetable adhesive layer is provided, so that the printing paper is stretched by moisture and rewet by heat. The shrinkage of the adhesive layer prevents curling in the direction orthogonal to the paper fiber flow direction of the printing paper (in the present invention, the direction orthogonal to the feeding direction of the sticking paper). For this purpose, each of a plurality of sticky papers stacked on the supply shelf is placed horizontally on the left and right when the

rolls

7, 7 'and 8, 8' as conveying means are sandwiched from above the watering device. It is conveyed from the next to the next without shaking, and water can be automatically applied to the rewet adhesive layer.

DESCRIPTION OF SYMBOLS 1 Printing paper 2 Rehumidifying adhesive layer 3 Surface treatment agent layer 4 Printing layer 5 Adhesive paper 5 '1 unit label 7, 7' Drive roller 8, 8 'Guide roller 9 Label cutter 10 Watering brush

Claims

An adhesive paper comprising a printing paper as a substrate, a rewet adhesive layer provided on one side of the printing paper, and a surface treatment agent layer provided on the other side of the printing paper, the surface treatment An adhesive paper, wherein the agent layer prevents curling of the adhesive paper due to elongation of the printing paper due to moisture.
The adhesive paper according to claim 1, wherein the surface treatment agent layer prevents heat curl due to shrinkage of the rewet adhesive layer.
The adhesive paper according to claim 1 or 2, wherein the printing paper is selected from the group consisting of fine paper, coated paper, and art paper.
The said surface treating agent layer consists of a surface treating agent selected from the group which consists of polyvinyl alcohol which is a completely saponified product, an oxidized starch, an acrylic copolymer resin, and an acrylic composite resin. Sticky paper.
The re-wettable adhesive layer is selected from the group consisting of a vinyl acetate polymer, a mixture of partially saponified polyvinyl alcohol and dextrin, wheat starch, an acrylic copolymer resin, and an acrylic composite resin. The adhesive paper according to claim 1 or 2, comprising a wet adhesive.
A supply shelf capable of stacking a plurality of sticky papers according to any one of claims 1 to 5, wherein a plurality of labels are printed in a paper feeding direction,
Conveying means for pulling out and conveying the sticking paper one by one from the supply shelf;
Cutter means for cutting the conveyed sticking paper in units of one label in a direction orthogonal to the transport direction;
A watering device for sticking paper, comprising: watering means for attaching water to a re-wettable adhesive layer of a label cut into one unit.
The sticking paper watering device according to claim 6, wherein the operation of the conveying means, the cutter means, and / or the watering means can be set to an automatic or manual intermittent motion.
The sticking paper watering device according to claim 6, wherein a transfer speed of the sticking paper by the transport means is adjustable.
The sticking according to claim 6, further comprising means for setting a length of a label printed in a plurality of units in the paper feeding direction of the sticking paper, and means for finely adjusting the setting of the length. Watering device for paper.
A sheet number counter that counts the number of sheets each time the sticker is cut by a unit of label by the cutter unit, a sheet number display unit that displays the counted number of sheets, and the sheet number display unit are reset to display 0 sheets. The sticking paper watering device according to claim 6, further comprising: a clear button for clearing.