JP2018090319A - Wetting method and sticking method of paste-up paper and sticking apparatus for said wetting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wetting method capable of satisfactorily wetting the adhesive layer even when the rewetting adhesive layer of a paste-up paper is upside down or vertical, and even when the adhesive layer runs the adhesive paper in these positional relationships, and a pasting method capable of pasting the paste-up paper to an adherend, furthermore, provide a pasting apparatus usable for the wetting method.SOLUTION: There are provided: a wetting method in which a water-soluble polymer aqueous solution having a viscosity at 25°C of 100 to 80,000 mPa s by a Brookfield Viscometer is applied to a rewetting adhesive layer of a paste-up paper placed to be upside down facing a top side or vertical in a direction orthogonal to the top, to wet the rewetting adhesive layer; and a pasting method using the wetting method. Also provided is a pasting apparatus having an aqueous solution tank, an aqueous solution supply part, an aqueous solution application part, and a past-up part, which can perform the wetting method and the pasting method.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for wetting a re-wetting adhesive layer of a sticker, a sticking method for sticking a wet sticker to an adherend, and a sticking device used in the wet method.

  As a method of applying a label to adherends such as glass bottles for seasonings, beverages, and favorite foods, and various cans, an adhesive is applied to the label paper by using an application device such as a labeler. A method of supplying and applying the applied label to an adherend is generally performed. As an adhesive to be applied to the label, a vinyl acetate emulsion adhesive is generally used in view of its good adhesive force.

By the way, the adhesive paper having a rewet adhesive layer on one side exemplified by stamps and the like is characterized in that adhesive force is expressed by applying (adhering) water to the rewet adhesive layer instead of the adhesive. Have
For example, Patent Document 1 discloses an adhesive paper in which a rehumidifying adhesive is laminated on a printing paper or the like that can prevent curling due to outside air humidity or the like. Since the feature of the invention of Patent Document 1 is to prevent curling due to the humidity or the like of the adhesive paper, water can be satisfactorily adhered to the rewet adhesive layer and the adhesive force of the entire adhesive layer can be expressed, There exists in the point which can perform the sticking of the sticker paper to a to-be-adhered body favorable and efficiently.

As a usual method for continuously adhering water to the wettable adhesive layer of a sticker on a commercial scale, water is moistened on a roll, sponge, or brush attached to a water tank holding water for adhesion, An example is a method in which the adhesive paper is fed while running so that the adhesive layer contacts the roll or the like. That is, for example, when the adhesive paper is run on the upper roll 102, sponge 104, or brush 105 in FIGS. 1 to 3 while the adhesive layer is in contact with the upper roll 102, the water 101 is applied to the adhesive layer. It will be attached. In addition, 103 of FIG. 1 is a lower roll for supplying water to the upper roll 102.
The re-wettable adhesive layer means an adhesive layer that generates an adhesive force when wetted with water or a water-containing solution, and when referred to as an adhesive layer in the present application, unless otherwise specified, a re-wettable adhesive layer It shall refer to the layer.

In the usual method of adhering water to the rewet adhesive layer to wet the adhesive layer, the adhesive layer is directed downward, that is, toward the water 101 side (the ground side) in FIGS. It is necessary to run (supply) the sticker.
However, depending on the positional relationship between the adherend and the sticker, the adhesive layer may be directed upward, that is, run toward the opposite side of the ground (the sky side; the top side of the top), or may be perpendicular to the ground. It may be preferable to run in a positional relationship. Here, the positional relationship perpendicular to the ground means that the adhesive layer corresponds to a wall (side wall) in a building.
In the present application, traveling the adhesive sheet with the adhesive layer facing upward is referred to as upside down traveling, and traveling in a positional relationship perpendicular to the ground (upside down) is referred to as vertical traveling. In addition, such a positional relationship of the adhesive layer is referred to as “upside down” and “vertical type”.

When the adhesive layer is wetted upside down or vertically, the method as shown in FIGS. 1 to 3 cannot be used, and it is necessary to supply water to the adhesive layer by spraying or dropping. . Alternatively, for example, the adhesive layer needs to be brought into contact with the lower side of the roll whose surface is wet with water to adhere the water.
However, when water is supplied to the adhesive layer in this manner upside down or vertically, it is difficult to effectively hold the water in the adhesive layer, and there is a problem that most of the water flows down from the adhesive layer. . As a result, the adhesive layer is not sufficiently wetted, and there arises a problem that the adhesive paper cannot be satisfactorily applied to the adherend.
In addition, there is a problem of so-called water leakage due to water that has flowed down without being held by the adhesive layer.

Therefore, the sticker applied to commercial-scale continuous sticking is only a tape format that can adopt the method of FIGS. 1 to 3, and specifically, the tape-type sticker is applied to a cardboard box tape stopper or the like. It has only been done.
That is, in the case where label sticking to bottles, cans and the like that cannot employ the method of FIGS. 1 to 3 is carried out continuously, the sticking method using the emulsion type adhesive must be used. However, when the adhesive is concentrated or dried, it cannot be redispersed or dissolved in water. Therefore, at the end of the pasting operation, cleaning of the adhesive tank is indispensable, and even if it is cleaned each time, a water-insoluble portion accumulates in the tank. When such water-insoluble parts accumulate, the water-insoluble parts need to be dissolved and washed by washing with alkaline water, and disposal of the alkaline water for washing requires a great deal of cost and labor.

JP2013-231256A

Accordingly, to eliminate the need for the above-mentioned washing of the adhesive tank and the use of alkaline water for washing each time, a method is provided that allows continuous label sticking to bottles, cans, etc. using adhesive paper without using an adhesive. Is the subject of the present invention.
Specifically, the present invention can improve the adhesive layer even when the adhesive layer of the adhesive paper is upside down or vertical, and even when the adhesive layer runs the adhesive paper in these positional relationships. It is an object of the present invention to provide a moistening method for moistening, and a method for sticking a sticker to an adherend using the moistening method. Furthermore, it aims at providing the sticking apparatus used for the said wet method.

  As a result of intensive studies to solve the above problems, the present inventors have a specific viscosity range in which a water-soluble polymer compound is dissolved in water instead of water for wetting the adhesive layer. A method of wetting the adhesive layer using an aqueous solution for wetting was developed, and the present invention was completed.

That is, according to the present invention, the re-wetting adhesive layer of the patch paper is placed upside down facing the top side of the top or bottom, or the vertical direction that is perpendicular to the top and bottom. The wet-adhesive layer is coated with a water-soluble polymer aqueous solution having a viscosity of 100 to 80,000 mPa · s at 25 ° C. measured by a Brookfield viscometer to wet the rewet-adhesive adhesive layer. A method of wetting the adhesive layer is provided.
Preferably, the water-soluble polymer to be dissolved in the water-soluble polymer aqueous solution is poly (meth) acrylate, poly (meth) acrylate polyethylene glycol ester, poly (meth) acrylate polyethylene glycol / polypropylene glycol mixed ester, ( A copolymer of (meth) acrylate and (meth) acrylic acid or (meth) acrylic acid ester, carboxymethylcellulose, sodium carboxymethylcellulose, sodium alginate, and propylene glycol alginate, A method of wetting a wet adhesive layer is provided.

  According to another aspect of the present invention, by the above-mentioned wettable method for the wettable adhesive layer, the adhesive paper wetted with the wettable adhesive layer is supplied to the adherend, and the adhesive is applied to the adherend. A method for applying a paper to an adherend is provided.

  According to the invention of still another aspect of the present invention, an aqueous solution tank holding a water-soluble polymer aqueous solution having a viscosity at 25 ° C. of 100 to 80,000 mPa · s by a Brookfield viscometer, The re-wettable adhesive layer of the patch is supplied upside down facing the top of the top or upside down, or the vertical direction that is perpendicular to the top and bottom, and a water-soluble polymer aqueous solution from the aqueous solution tank. An aqueous solution supply unit for supplying to the rewet adhesive layer, an aqueous solution application unit for applying the water-soluble polymer aqueous solution applied to the rewet adhesive layer to the entire rewet adhesive layer, and an entire rewet adhesive layer There is provided a sticking device for sticking paper, which has a sticking portion for sticking a sticking paper coated with a water-soluble polymer aqueous solution to an adherend.

According to the wettability method of the rewetable adhesive layer of the adhesive paper of the present invention, even if the adhesive layer of the adhesive paper is upside down or vertical, the adhesive layer runs the adhesive paper in these positional relationships. However, since the whole adhesive layer can be wetted well, an excellent adhesive force can be expressed.
Further, according to the method for sticking the adhesive paper to the adherend of the present invention, the adhesive paper with the rewet adhesive layer wetted by the wetting method of the present invention is supplied to the adherend and applied to the adherend. Therefore, the adhesive paper can be favorably adhered to the adherend with a suitable adhesive force.
Further, since the sticking device for sticking paper of the present invention can stick the sticking paper to the adherend by the wetting method and sticking method of the invention, the sticking paper can be satisfactorily adhered to the adherend with a suitable adhesive force. it can.

It is the schematic which shows an example of the normal method of making water adhere to the re-wettable adhesive layer of a sticker paper. It is the schematic which shows another example of the normal method of making water adhere to the re-wettable adhesive layer of a sticker paper. It is the schematic which shows another example of the normal method of making water adhere to the re-wettable adhesive layer of a sticker paper. It is sectional drawing which shows an example of the sticker which has a re-wettable adhesive layer. It is the schematic which shows one Embodiment of the wetting method of this invention, and the sticking method, and is the schematic which shows one Embodiment of the sticking apparatus of this invention. It is sectional drawing which shows the state in which the sticker paper which has a re-wettable adhesive layer was wetted with the water-soluble polymer aqueous solution used for this invention. It is the schematic which shows another embodiment of the wetting method of this invention.

Hereinafter, the present invention will be described in more detail.
The wettability method of the rewet adhesive layer of the adhesive paper of the present invention is arranged so that the rewet adhesive layer is upside down facing the top side of the top or bottom, or a vertical type that is perpendicular to the top and bottom. This is a method of applying a water-soluble polymer aqueous solution having a viscosity at 25 ° C. of 100 to 80,000 mPa · s by a Brookfield viscometer to wet the rewet adhesive layer on the rewet adhesive layer of the sticker. .

  The adhesive paper that can be used in the wetting method of the present invention has a re-wettable adhesive layer, which is wetted with water or a water-containing solution and then attached to an adherend. , And glass bottles for favorite foods, cardboard boxes, labels attached to various cans, and the like. The type of paper used for the sticker is not particularly limited, and any type of paper may be used as long as it can be used for the label for the above-mentioned use. Examples thereof include medium quality paper, high quality paper, coated paper, matte coated paper, coated paper for ink jet printing, art paper, Japanese paper, and various synthetic papers.

  The adhesive for forming a re-wettable adhesive layer by applying to one side of these papers is particularly limited as long as the adhesive force is exhibited by wetting (re-wetting) with water or a water-containing solution. Any other material may be used as long as it is used for general stickers, labels, and the like.

The wetting method of the present invention is a method of wetting the adhesive layer when the adhesive paper is supplied to the adherend in such a positional relationship that the rewet adhesive layer is turned upside down or vertically. As an example of upside down, there can be mentioned a sticking process in which wetting and sticking are continuously performed while running a sticker on the bottom of a cardboard box that cannot be turned upside down due to some restrictions.
As an example of the vertical type, there can be mentioned a sticking process in which wetting and sticking are continuously carried out while running a sticky paper in a glass bottle for beverage or the like.

In this way, when the adhesive paper is run in a positional relationship in which the adhesive layer is upside down or vertical, if water is used to wet the adhesive layer, the above problem occurs, and the adhesive layer is not wetted. The adhesive layer portion that cannot express force is supplied to the adherend while remaining. As a result, inability to stick due to insufficient adhesive force, peeling or the like occurs.
Since the water-soluble polymer aqueous solution used in the wetting method of the present invention has a specific viscosity range, it is well retained after being applied to the adhesive layer, and the adhesive layer is wetted by the water of the water-soluble polymer aqueous solution. In addition, the adhesive force is sufficiently developed. As a result, it can be satisfactorily affixed to the adherend.

  The water-soluble polymer aqueous solution used in the present invention has a viscosity of 100 to 80,000 mPa · s as measured with a Brookfield viscometer at 25 ° C. Preferably, they are 800 mPa * s or more and 50,000 mPa * s or less, More preferably, they are 2,000 mPa * s or more and 30,000 mPa * s or less. When the pressure is less than 100 mPa · s, the water-soluble polymer aqueous solution is not sufficiently held in the adhesive layer, and part of the water flows down from the adhesive layer as in the case of using water and does not get wet and expresses adhesive strength. The trouble that the adhesive layer part which cannot be performed occurs. If it exceeds 80,000 mPa · s, the viscosity is too high and it is difficult to apply the adhesive layer to the adhesive layer with a uniform thickness. As a result, the appearance of the affixed sticky paper becomes uneven and looks bad.

The viscosity of the water-soluble polymer aqueous solution is measured according to JIS Z8803 using a Brookfield viscometer. The measurement temperature is 25 ° C.
As the Brookfield type viscometer, for example, a BL type or BM type viscometer (manufactured by Toki Sangyo Co., Ltd.), a digital bismetholone viscometer VDA2 type (manufactured by Shibaura System Co., Ltd.) or the like can be used. When using a BM viscometer or a digital bismetholone viscometer VDA2 type, 1-No. Measurement can be performed at a rotational speed of 6 to 60 rpm using a 4-rotor. What is necessary is just to select a suitable rotor and rotation speed according to the viscosity of the water-soluble polymer aqueous solution to be used.

The water-soluble polymer, which is a component of the water-soluble polymer aqueous solution, is not particularly limited as long as it dissolves in water and exhibits the above viscosity range, but it is soluble in water and has a uniform thickness to the adhesive layer. From the viewpoint of coating properties, the following polymer compounds are preferred. That is, poly (meth) acrylate, poly (meth) acrylic acid polyethylene glycol ester, poly (meth) acrylic acid polyethylene glycol / polypropylene glycol mixed ester, (meth) acrylate and (meth) acrylic acid or (meth) It is preferable that it is 1 or more types selected from the copolymer with acrylate ester, carboxymethylcellulose (CMC), sodium carboxymethylcellulose (CMCNa), sodium alginate, and propylene glycol alginate.
As the poly (meth) acrylate and (meth) acrylate, sodium poly (meth) acrylate and sodium (meth) acrylate are preferable from the viewpoint of cost effectiveness.
In the present specification, (meth) acrylic acid refers to one or more selected from acrylic acid and methacrylic acid. Thus, for example, poly (meth) acrylate refers to polyacrylate, polymethacrylate, or a copolymer of acrylate and methacrylate.

  The poly (meth) acrylic acid polyethylene glycol / polypropylene glycol mixed ester is not particularly limited as long as the mixing ratio of polyethylene glycol and polypropylene glycol is within a concentration range described below and dissolved in water.

As (meth) acrylic acid ester, which is a raw material of a copolymer of (meth) acrylic acid salt and (meth) acrylic acid ester, alkyl having 1 to 20 carbon atoms of (meth) acrylic acid, and / or An alkenyl ester can be illustrated. Examples thereof include polyethylene glycol ester of (meth) acrylic acid, polypropylene glycol ester, and mixed ester of polyethylene glycol / polypropylene glycol.
The copolymerization ratio of these (meth) acrylic acid esters with (meth) acrylate is not particularly limited as long as the copolymer is in a range that dissolves in water in the concentration range described below.

  Moreover, as a weight average molecular weight of the polyethylene glycol which is an example of the ester part of the said water-soluble polymer, a polypropylene glycol, and a polyethyleneglycol / polypropyleneglycol part, 100-100,000 can be illustrated.

  The degree of etherification of CMC and CMCNa is not particularly limited, but is preferably 0.5 to 1.1 in terms of ease of handling.

The water-soluble polymer aqueous solution is more preferably an aqueous solution in which one or more of the above-listed polymer compounds and starch are dissolved in water. That is, it is more preferable to use a mixture of one or more of these polymer compounds and starch as the water-soluble polymer. By using a mixed aqueous solution of these polymer compounds and starch, the coating property to the adhesive layer becomes better, and defects such as insufficient wetting hardly occur. Among these, a mixed aqueous solution of sodium poly (meth) acrylate and starch is particularly preferable.
Hereinafter, when referred to as a polymer compound, it refers to any one or more of the above-listed polymer compounds.

  Examples of commercially available sodium polyacrylate include Rheozic series such as Rheozic (registered trademark) 260H and Aronbis series such as Aronbis (registered trademark) SX (all manufactured by Toagosei Co., Ltd.).

  Although it does not specifically limit as starch, Tapioca starch, corn starch, potato starch etc. can be illustrated. Examples of commercially available products include SQ330 (tapioca starch, manufactured by Nissho Chemical Co., Ltd.), LeoTack F (corn starch, manufactured by Nissho Chemical Co., Ltd.), and Delica FM9 (potato starch, manufactured by Nissho Chemical Co., Ltd.).

  As water for dissolving the water-soluble polymer, water, pure water, ion-exchanged water, purified water and the like can be used. It is preferable to use clean water in terms of cost effectiveness.

  The concentration of the water-soluble polymer in the water-soluble polymer aqueous solution is preferably 0.05 to 5.00% by mass in terms of the wettability of the adhesive layer and the expression of the adhesive force thereby, and 0.10 to 3%. 0.000 mass% is more preferable. When a mixture of a polymer compound and starch is used as the water-soluble polymer, the total concentration of both is preferably within this range. The mixing ratio of the polymer compound and starch is a mass ratio, and the polymer compound / Starch is preferably in the range of 3/7 to 7/3.

The molecular weight of the water-soluble polymer is such that when the concentration of the water-soluble polymer in the water-soluble polymer aqueous solution is within the above range, the viscosity of the water-soluble polymer aqueous solution is within the range of the present invention described above. If it is. In addition, the water-soluble polymer may be a polymer having a cross-linked structure. In this case, the molecular weight may not be specified, but even in such a case, the above concentration and viscosity may be satisfied.
Even if any one of the water-soluble polymers to be used is a single type or a combination of a plurality of types, the concentration of the water-soluble polymer in the water-soluble polymer aqueous solution and the water-soluble polymer aqueous solution What is necessary is just to control so that the range of a viscosity may become said range.
Commercially available products can be used for the polymer compounds and various starches exemplified above, but in that case, the molecular weights thereof may not be disclosed or may be unknown due to reasons such as having a partially crosslinked structure. However, even in that case, the above concentration range and viscosity range may be satisfied.

  From the viewpoint of applicability to the rewetable adhesive layer, the water-soluble polymer used in the present invention has a 0.5 mass% aqueous solution having a viscosity at 25 ° C. measured by a Brookfield viscometer of 500 to 30,000 mPa · It is preferable that it is s. However, even outside this range, it can be used in the wetting method of the present invention by adjusting the concentration of the water-soluble polymer aqueous solution. In addition, what is necessary is just to measure the said viscosity by the method similar to the method demonstrated above.

The pH of the water-soluble polymer aqueous solution is preferably in the range of 4.0 to 10.0, more preferably 5.0 to 9.5, and more preferably 6.0 to 9.5 in terms of corrosiveness such as a sticking device. preferable. Therefore, when the polymer compound used is a copolymer using (meth) acrylic acid as a comonomer, copolymerization of (meth) acrylic acid so that the pH of the water-soluble polymer aqueous solution is within this range. It is preferable to control the ratio.
For example, the pH can be a value obtained by measuring a water-soluble polymer aqueous solution itself at 25 ° C. with a pH meter in accordance with JIS Z 8802.

The amount of application of the water-soluble polymer aqueous solution to the re-humidifying adhesive layer is not particularly limited as long as a suitable application state of the adhesive paper on the adherend is obtained, but the adhesive layer is wetted without excess or deficiency. Thus, it is preferably 5 to 50 g per 1 m ² of the adhesive layer surface of the rewet adhesive layer.

  The adhesive layer is wetted by applying the water-soluble polymer aqueous solution described above to the rewet adhesive layer. The adhesive paper with the adhesive layer wet is supplied to the adherend and attached by an operation such as pressure bonding.

Next, with reference to FIGS. 4 to 6, one embodiment of the method for wetting the re-wetting adhesive layer of the adhesive paper and the method for attaching the adhesive paper to the adherend will be described more specifically. FIG. 5 is an example in the case where the rewet adhesive layer 2 is in an upside down positional relationship.
By supplying the adhesive paper 10 in which the rewetable adhesive layer 2 is formed on the paper 1 shown in FIG. 4 to the application device of one embodiment of the present invention shown in FIG. Wetting with the water-soluble polymer aqueous solution 3 and sticking to the adherend 4 are performed. In FIG. 5, the manual supply of the sticky paper 10 is illustrated, but naturally automatic supply may be used.

As shown in FIG. 5, the adhesive sheet 10 is supplied to the conveying rolls 23 and 23 ′ while the position information of the adhesive sheet is grasped by the sensor 22 from the left side, so that the adhesive sheet 10 is conveyed rightward by the roll ( Run). The roll 21 is a coating roll for applying the water-soluble polymer aqueous solution 3 to the adhesive paper 10. An aqueous solution tank 20 for storing the water-soluble polymer aqueous solution 3 is disposed on the upper part of the coating roll 21, and the water-soluble polymer aqueous solution 3 is supplied from the aqueous solution tank 20 to the coating roll 21. Is deposited on the surface. The rolls 24 and 24 ′ arranged below the application roll 21 are adjustment rolls that adjust the contact of the sticker 10 with the application roll 21. The patch 10 is brought into contact with the coating roll 21 to which the water-soluble polymer aqueous solution 3 is adhered while being guided by the transport rolls 23 and 23 ′ and the adjustment rolls 24 and 24 ′ and transported in the right direction.
As a result, the water-soluble polymer aqueous solution 3 is uniformly applied to the rewet adhesive layer 2 and the rewet adhesive layer 2 is wetted to obtain a wet patch paper 11 shown in FIG. The wet patch paper 11 is conveyed toward the adherend 4 by the conveying rolls 25 and 25 ′. The rolls 26, 26 ′ and 27 are pressure adjusting rolls for adjusting the degree of pressure bonding of the wet patch paper 11 to the adherend 4. These pressure adjusting rolls also serve to give the adherend 4 rotation in conjunction with the sticking operation. The wet patch 11 transported to the adherend 4 is pressure-bonded to the adherend 4 by these pressure adjusting rolls, and the wet sticker 11 is stuck to the adherend 4.

  In the present embodiment, the aqueous solution tank 20 for storing the water-soluble polymer aqueous solution 3 corresponds to the aqueous solution tank of the sticking device of the present invention, and the coating roll 21 corresponds to the aqueous solution supply unit. The application roll 21 corresponds to the aqueous solution application part of the sticking device of the present invention together with the adjusting rolls 24 and 24 '. The pressure adjusting rolls 26, 26 ', and 27 correspond to the sticking portion of the sticking device of the present invention.

FIG. 7 shows another embodiment of the aqueous solution tank, the aqueous solution supply unit, and the aqueous solution application unit of the sticking device of the present invention that can be used in another embodiment of the wetting method of the present invention.
The embodiment shown in FIG. 7 is an example in the case where the rewet adhesive layer 2 has a vertical positional relationship. A grooved roll 31 having a spiral groove 32 and a part of a water-soluble polymer aqueous solution pulling guide 33 are immersed in an aqueous solution tank 30 for storing the water-soluble polymer aqueous solution 3. These 31 and 33 are equivalent to the aqueous solution supply part of the sticking device of the present invention. Further, the grooved roll 31 also corresponds to the aqueous solution application part (also used).
By rotating the grooved roll 31, the water-soluble polymer aqueous solution 3 moves up the gap between 32 and 33 by the action of the spiral groove 32 and the water-soluble polymer aqueous solution pull-up guide 33. Pulled upward. At the same time, the water-soluble polymer aqueous solution 3 adheres to the entire surface of the grooved roll 31. The gap between the grooved roll 31 and the water-soluble polymer aqueous solution pull-up guide 33 is set to an interval suitable for pulling according to the viscosity of the water-soluble polymer aqueous solution 3. Specifically, it can be set according to the viscosity of the water-soluble polymer aqueous solution 3 within several cm, for example, between 1 and 5 cm. In addition, this space | interval shall point out the minimum space | interval part between the surface which is not the spiral groove 32 part of the roll 31 with a groove | channel, and the water-soluble polymer aqueous solution raising guide 33. FIG.
The amount of the water-soluble polymer aqueous solution 3 attached to the grooved roll 31 is a doctor blade or the like (not shown) so that the rewet adhesive layer 2 of the adhesive paper 10 is suitably wetted by the water-soluble polymer aqueous solution 3. ).

A part of the grooved roll 31 is exposed from the side surface of the aqueous solution tank 30 on the front side (front side) or the rear side of the paper sheet so that the re-wetting adhesive layer 2 of the sticker paper 10 can come into contact therewith. For example, the adhesive paper 10 is moved from left to right, for example, while contacting the grooved roll 31 in front or rear of the paper surface of FIG. The obtained wet sticky paper 11 is conveyed to the sticking portions corresponding to the pressure adjusting rolls 26, 26 'and 27 of FIG. 5 and stuck on the adherend.
In the case of the sticking device of another embodiment of the present invention having a vertical (running) aqueous solution tank, an aqueous solution supply part, and an aqueous solution application part exemplified in FIG. 7, the sticking part corresponds to the sticking part of FIG. The crimping adjustment rolls 26, 26 ', 27, etc. to be made are changed in shape, number, arrangement, operation method, etc. so as to be suitable for the vertical type.

  EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples.

The following compounds were used as polymer compounds and starches for water-soluble polymer aqueous solutions.
(Polymer compound)
-Sodium polyacrylate (PAANA); Rheojic (registered trademark) 260H (manufactured by Toagosei Co., Ltd.)
・ Carboxymethylcellulose sodium (CMCNa); Sunrose (registered trademark) F120MC (manufactured by Nippon Paper Industries Co., Ltd.)
(Starch)
・ Tapioca starch; SQ330 (manufactured by Nissho Chemical Co., Ltd.)

(Attachment and adherend)
As the sticker, a sticker manufactured in accordance with the sticker described in Example 1 of Japanese Patent Application Laid-Open No. 2013-231256, which is an application patent of the present applicant, was used. Specifically, a vinyl acetate polymer is applied to the entire surface of one side of the printing paper in which the high-quality paper described in Example 1 is changed to a coated paper to form a rewet adhesive layer, and the other side. An adhesive paper coated with a surface treatment agent for polyvinyl alcohol was used. The size of the sticker paper was 11 cm long and 14 cm wide.
As the adherend, 4 sake bottles for sake were used.

(Viscosity measurement method)
The viscosity of the water-soluble polymer aqueous solution was measured using a digital bismetholone viscometer VDA2 type (manufactured by Shibaura System Co., Ltd.) at 25 ° C. Measured with 3 rotors.

(Attachment evaluation)
A sticking test was conducted in which a sticker paper was put on 100 sake bottles (100 sticker sheets) one by one in a 4 sake bottle for sake using the method described in the following examples and comparative examples. Was evaluated according to the following criteria.
A: All 100 sheets can be affixed, and one or less can be observed with the irregularities on the surface of the affixed paper by visual observation after application.
A: All of 100 sheets can be pasted, and 2 to 4 sheets have defects in the surface of the patch paper observed by visual observation after the pasting.
(Triangle | delta): All the 100 sheets can be affixed, and 5-10 sheets which the defect of the unevenness | corrugation of the sticker paper surface is recognized in visual observation after sticking. Or 1-9 pieces that cannot be attached and peel off from the bottle.
X: 10 or more pieces that cannot be attached and peel off from the bottle.

Example 1
0.6 g of Rheological 260H was dissolved in 97.4 g of water (clean water) to prepare an approximately 0.61 mass% aqueous solution of Rheological 260H. 5.0 g of SQ330 was dissolved in 5.0 g of water by heating in accordance with a conventional method for preparing an aqueous starch solution to prepare a 50.0% by mass aqueous solution of SQ330. Next, 2.0 g of a 50.0% by mass aqueous solution of SQ330 is added to the aqueous solution of the above rheological 260H and mixed with stirring to obtain a water-soluble solution having a rheological 260H concentration of 0.6% by mass and an SQ330 concentration of 1.0% by mass. 100 g of polymer aqueous solution A was prepared.
The viscosity of the water-soluble polymer aqueous solution A was measured under the above conditions at a rotational speed of 12 rpm. The measurement results are shown in Table 1.

Using the water-soluble polymer aqueous solution A, and using the sticking device (upside down traveling type device) shown in FIG. 5, a sticking test for sticking one sticker sheet to one hundred 4 bottles one by one. Carried out. The sticking test was conducted at room temperature, including the temperature of the water-soluble polymer aqueous solution. The application amount of the water-soluble polymer aqueous solution to the re-wettable adhesive layer of the adhesive paper was set to 25 g per 1 m ² of the adhesive paper (that is, approximately 0.39 g per adhesive paper). Table 1 shows the results of evaluation of sticking property.

(Example 2)
The water-soluble polymer aqueous solution A prepared in Example 1 is used, and instead of the sticking device shown in FIG. 5, a sticking device (vertical traveling device) having an aqueous solution tank, an aqueous solution supply part, and an aqueous solution applying part shown in FIG. ) Was used to carry out a sticking test in which 100 sheets of sticky paper were stuck to 100 4 4 bottles one by one. The sticking test was conducted at room temperature, including the temperature of the water-soluble polymer aqueous solution. The amount of the water-soluble polymer aqueous solution applied to the re-wettable adhesive layer of the adhesive paper was set to 25 g per 1 m ² of the adhesive paper. Table 1 shows the results of evaluation of sticking property.

(Example 3)
2.0 g of Sunrose F120MC was dissolved in 98.0 g of water to prepare 100 g of a 2.0 mass% solution of Sunrose F120MC. The Sunrose F120MC solution was designated as water-soluble polymer aqueous solution B. The viscosity of the water-soluble polymer aqueous solution B was measured under the above conditions at a rotational speed of 6 rpm. The measurement results are shown in Table 1.
A sticking test was carried out in the same manner as in Example 1 except that the water-soluble polymer aqueous solution B was used instead of the water-soluble polymer aqueous solution A to evaluate the sticking property. Table 1 shows the results of evaluation of sticking property.

(Comparative Example 1)
A sticking test was conducted to evaluate sticking property in the same manner as in Example 1 except that water was used without using a water-soluble polymer aqueous solution. Table 1 shows the results of evaluation of sticking property.
Since Comparative Example 1 used water, most of the water could not be held on the application roll 21, causing water leakage to the floor. Therefore, actual production using water is difficult.

(Comparative Example 2)
A sticking test was attempted in the same manner as in Example 2 except that water was used without using a water-soluble polymer aqueous solution. However, in the vertical traveling device, the viscosity was too low to allow water to be pulled up above the grooved roll 31, and the sticking test could not be performed.

  As is apparent from Table 1, Examples 1 to 3 according to the wetting method of the present invention were able to wet the rewet adhesive layer of the adhesive paper well and showed excellent adhesive properties. On the other hand, in Comparative Example 1 using water as wet water, 50 sheets or more were not attached to the 4-joint of the adherend.

DESCRIPTION OF SYMBOLS 1 Paper 2 Re-wettable adhesive layer 3 Water-soluble polymer aqueous solution 4 Adhering body 10 Adhesive paper 11 Wet adhesive paper 20, 30 Aqueous solution tank 21 Application | coating roll (Aqueous solution supply part and aqueous solution application part)
22 Sensors 23, 23 ', 25, 25' Transport rolls 24, 24 'Adjustment roll (aqueous solution coating unit)
26, 26 ', 27 Crimp adjustment roll (attachment part)
31 Grooved roll (aqueous solution supply unit and aqueous solution application unit)
32 Spiral groove 33 Water-soluble polymer aqueous solution pulling guide 101 Water 102 Upper roll 103 Lower roll 104 Sponge 105 Brush

Claims (8)

The rewet adhesive layer of the patch is arranged so that the rewet adhesive layer of the patch is turned upside down facing the top side of the top or bottom, or perpendicular to the top and bottom. Applying a water-soluble polymer aqueous solution having a viscosity at 25 ° C. of 100 to 80,000 mPa · s by a mold viscometer to wet the rewet adhesive layer;
A method of wetting the re-wetting adhesive layer of the sticker. The water-soluble polymer to be dissolved in the water-soluble polymer aqueous solution is poly (meth) acrylate, poly (meth) acrylic acid polyethylene glycol ester, poly (meth) acrylic acid polyethylene glycol / polypropylene glycol mixed ester, (meth). A copolymer of acrylate and (meth) acrylic acid or (meth) acrylic acid ester, carboxymethyl cellulose, carboxymethyl cellulose sodium, sodium alginate, and alginate propylene glycol ester,
The method of wetting the rewet adhesive layer according to claim 1. The poly (meth) acrylate and (meth) acrylate are sodium poly (meth) acrylate and sodium (meth) acrylate, respectively.
The method of wetting the rewet adhesive layer according to claim 2. The concentration of the water-soluble polymer in the water-soluble polymer aqueous solution is 0.05 to 5.00% by mass.
The wettability method of the re-wettable adhesive layer as described in any one of Claims 1-3. The water-soluble polymer aqueous solution further contains 0.05 to 5.00% by mass of starch,
The method of wetting a rewet adhesive layer according to any one of claims 2 to 4. The application amount of the water-soluble polymer aqueous solution is 5 to 50 g per 1 m ² of the adhesive layer surface of the rewet adhesive layer.
The wetting method of the re-wettable adhesive layer as described in any one of Claims 1-5. An adhesive paper wetted with the rewet adhesive layer is supplied to the adherend by the wettable method of the rewet adhesive layer according to any one of claims 1 to 6, and the adhesive paper is applied to the adherend. Affix,
A method for applying a sticker to an adherend. An aqueous solution tank holding a water-soluble polymer aqueous solution having a viscosity at 25 ° C. of 100 to 80,000 mPa · s as measured by a Brookfield viscometer;
An adhesive paper supply unit for supplying the adhesive paper as a vertical type in which the rewet adhesive layer of the adhesive paper is turned upside down facing the top side of the top or bottom, or perpendicular to the top and bottom;
An aqueous solution supply unit for supplying the aqueous polymer solution from the aqueous solution tank to the re-wettable adhesive layer of the sticking paper;
An aqueous solution application part for applying the water-soluble polymer aqueous solution applied to the rewet adhesive layer to the entire rewet adhesive layer;
A sticking part for sticking a sticker on which the water-soluble polymer aqueous solution is applied to the entire rewet adhesive layer to an adherend,
Sticking device for sticker paper.

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