JP3600900B2 - Method of manufacturing pressure-sensitive adhesive type decorative sheet - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a pressure-sensitive adhesive type decorative sheet mainly used for interior decoration of an inner wall of a building.
[0002]
[Prior art]
2. Description of the Related Art Generally, interior decoration of a building inner wall is performed by sticking a decorative sheet having embossed or printed decoration on the surface of the inner wall panel fixed to a beam, a pillar, or the like.
[0003]
The decorative sheet is, for example, a product in which an adhesive is applied in advance on the back surface to provide an adhesive layer, and the adhesive layer is coated with a release protective paper that can be peeled off without impairing its adhesiveness. However, it is difficult for an amateur to attach these, and it is common for craftsmen with specialized skills to construct them.
[0004]
[Problems to be solved by the invention]
However, in the conventional technology as described above, since the pressure-sensitive adhesive layer of the decorative sheet is applied evenly to the entire back surface of the sheet, it is difficult to peel off the sheet once it is attached to the panel. If it does, it will be difficult to correct it, and even if it comes off, the adhesive will stick to the panel surface and remain, making it impossible to attach the decorative sheet again. Furthermore, air bubbles are likely to be generated between the decorative sheet and the panel during sticking, and it has been difficult to remove these air bubbles.
[0005]
Therefore, in order to finish the wall beautifully, it is difficult for a layman to apply a decorative sheet, and the work must rely solely on a skilled craftsman, which increases the construction cost. There was a problem.
[0006]
In addition, there is a problem that the conventional decorative sheet cannot be recycled because it is inseparably composed of materials such as vinyl chloride and paper. Furthermore, when the decorative sheet is incinerated as waste, there is a problem that harmful substances such as dioxin are generated and ash which is difficult to landfill is generated. Recently, there has been a problem that the conventional decorative sheet tends to be bulky when directly discarded.
[0007]
An object of the present invention is to provide a pressure-sensitive adhesive type decorative sheet that can be easily and inexpensively constructed by an amateur, and is environmentally friendly and recyclable in view of the state of the related art.
[0008]
[Means for Solving the Problems]
The features of the present invention for solving the conventional problems as described above and achieving the intended object include a sheet body having a surface decorated with prints and the like, and a pressure-sensitive adhesive provided on the sheet body. A blocking layer for blocking, an elastic layer provided so as to overlap with the blocking layer and having elasticity and capable of impregnating with an adhesive; protruding from the surface of the elastic layer; being arranged in parallel at predetermined intervals; A large number of separating members having an adhesive layer, the elastic layer is impregnated with an adhesive, and pressed against the adherend with a certain or more pressing force so that the elastic layer is adhered to the adherend. A method for producing a pressure-sensitive adhesive decorative sheet , comprising: integrating the sheet body with an elastic layer by dissolving a polyolefin-based resin forming a barrier layer while feeding the sheet body to form an entire back surface of the sheet body. Coating Before the resin is solidified, the elastic layer is overlaid, and the elastic layer is overlaid and passed through a pressing means consisting of a press roll and a cooling roll to be pressed and cooled, thereby integrating the separating member with the elastic layer. The polyolefin resin dissolved from the separating member forming die is linearly flowed down to the elastic layer, and lightly pressurized through a pressing means including another press roll and a cooling roll. It is performed by cooling and solidifying, and the pressure-sensitive adhesive is impregnated by applying the elastic layer onto the separating member from above, and thereafter, by scraping off the pressure-sensitive adhesive adhered to the surface of the separating member. A method for producing a pressure-sensitive adhesive type decorative sheet, characterized in that an extremely thin weak adhesive layer is formed on the surface of the separating member .
[0009]
In addition, it is preferable that a peeling protection paper which can be peeled off is attached to the elastic layer via the separating member without damaging the adhesiveness of the pressure-sensitive adhesive.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a method for producing a pressure-sensitive adhesive type decorative sheet according to the present invention will be described with reference to FIGS.
[0011]
In the drawing, reference numeral 1 denotes a pressure-sensitive adhesive type decorative sheet manufactured according to the present invention . The pressure-sensitive adhesive type decorative sheet 1 has a sheet body 2 having a surface decorated with a print or the like, and a blocking member for blocking an adhesive. , An elastic layer 4 made of a nonwoven fabric, a plurality of separating members 5 protruding from the elastic layer 4, an adhesive impregnated in the elastic layer 4, and adhered to the separating members 5, 5. And the release protection paper 6.
[0012]
As shown in FIG. 2, the sheet main body 2 is formed into a sheet shape using a polyolefin resin, and the sheet is embossed or printed to be decorated.
[0013]
The elastic layer 4 is made of a non-woven fabric made of a polyolefin resin, and the structure of the non-woven fabric 4 has voids therein so that the pressure-sensitive adhesive can be impregnated and is elastically deformed by pressing. I have.
[0014]
As shown in FIG. 3, the bonding between the sheet main body 2 and the elastic layer 4 is performed by dissolving the polyethylene resin forming the barrier layer 3 and feeding the sheet body 2 to the back surface of the sheet main body 2 from the die 9 for forming the barrier layer. The whole is spread so as to coat the whole, and the coating is applied. Immediately thereafter (before the polyethylene resin is solidified), the elastic layer (non-woven fabric) 4 is superimposed. The sheet body 2 and the elastic layer 4 are joined through the blocking layer 3 to be integrally formed, while being pressed through the pressing means 12 and the polyethylene resin (blocking layer 3) is cooled and solidified. It has become.
[0015]
The blocking layer 3 formed between the sheet body 2 and the elastic layer 4 is coated with a thin polyethylene resin (10 to 20 microns) in a sheet shape, and blocks the adhesive without permeating the sheet body. It is supposed to.
[0016]
As shown in FIG. 2, the separating member 5 is formed by laminating the surface of the elastic layer 4 into an extremely fine line having a width of 0.5 mm to 3 mm by about 0.1 mm to 0.5 mm from the elastic layer 4. It is formed to protrude. Also, a large number of separating members 5 are arranged in parallel at predetermined intervals (2 mm to 20 mm), and a groove-shaped space 13 formed between adjacent separating members 5, 5 has both ends opened. I have.
[0017]
In the linear laminating process, as shown in FIGS. 4 and 5, on the decorative sheet composed of the sheet main body 2, the blocking layer 3 and the elastic layer 4 sent out by the press roll 14, it was melted from the separating member forming die 15. The polyethylene resin is caused to linearly flow down on the decorative sheet (elastic layer 4), and is passed through a pressing means 17 comprising a press roll 14 and a cooling roll 16 and lightly pressed, and the polyethylene resin is cooled and solidified. Done.
[0018]
The separating member forming die 15 has a plurality of downflow holes 18, 18... Formed at regular intervals on a lower surface thereof, and the resin flows down linearly from the downflow holes 18, 18. , 5,... Are arranged in a line at regular intervals on the elastic layer 4 in parallel.
[0019]
The pressure-sensitive adhesive is impregnated into the elastic layer 4 using an automatic coating machine called a pressure-sensitive adhesive coater 19, and as shown in FIG. 6, the pressure-sensitive adhesive containing the pressure-sensitive adhesive 20 to such an extent that the surface of the elastic material layer 4 of the decorative sheet 1 is slightly immersed. By adjusting the position of the receiving tray 21, sending out the decorative sheet 1 by the feed roller 22, and passing through the adhesive receiving tray 21, the adhesive 20 is applied to the elastic layer 4 from above the separating member 5, The adhesive adhered to the surface of the separating member is scraped off with a brush called a doctor coater 23, so that an extremely thin weakly adhesive layer 24 is formed on the surface of the separating member 5.
[0020]
Since the amount of the adhesive is small (1 to 10 g), the weakly adhesive layer 24 exhibits extremely weak adhesiveness. Further, the elastic layer 4 is sufficiently impregnated with the adhesive by penetrating from between the separating members 5 and 5, and the elastic layer 4 also has a function as an adhesive layer exhibiting sufficient adhesiveness.
[0021]
On the surfaces of the separating members 5, 5,..., A release protective paper 6 that can be peeled off without impairing the adhesiveness of the adhesive is adhered by a weak adhesive pressure-sensitive adhesive layer 24.
[0022]
The pressure-sensitive adhesive decorative sheet 1 can be recycled by forming all of the sheet body 2, the barrier layer 3, the elastic layer 4, and the separating member 5 with a polyolefin-based resin. Even in the case where the adhesive decorative sheet 1 is incinerated, the polyolefin is converted into water and carbon dioxide gas, does not generate chlorofluorocarbon which causes ozone layer destruction, and does not generate environmental hormones or dioxins. Is preferred.
[0023]
Next, a method of attaching and using the decorative sheet 1 described above will be described.
[0024]
First, the release protection paper 6 is peeled off from the decorative sheet 1, and as shown in FIG. 7, the decorative sheet 1 is applied to an adherend (ceiling and wall, etc.) 25, and the separating member 5 of the decorative sheet 1 is attached to the adherend. In a state where the decorative sheet 1 is lightly contacted with the decorative sheet 25, the decorative sheet 1 is temporarily fixed by the weak adhesive layer 24 formed on the surface of the separating member. At this time, the surface of the elastic layer 4 is separated from the adherend 25 by the separating members 5, 5,... At a position where the adhesive force of the adhesive is not sufficiently exhibited, and the weakly adhesive layer on the surface of the separating member. Since the adhesive is impregnated with the adhesive layer 24, the pressure-sensitive adhesive impregnated in the elastic layer 4 does not stick to the adherend 25. it can.
[0025]
When the decorative sheet 1 has been adjusted to the predetermined position, the decorative sheet 1 is pressed against the adherend 25 with a certain or more pressing force. At this time, as shown in FIG. 8, the elastic layer 4 is elastically deformed, the separating members 5, 5,... Are buried in the elastic material 4, and the elastic layer 4 appears at the same position as the surface of the separating member. Since the adhesive sheet 4 is impregnated with the adhesive, the decorative sheet 1 functions as an adhesive layer, and the decorative sheet 1 is attached to an adherend (ceiling or wall) 25.
[0026]
At this time, the properties differ depending on whether the spacing between the separating members 5 and 5 is widened or narrowed. If the spacing is widened, the area where the elastic layer 4 is bonded to the adherend 25 is increased, and the adhesive force is increased. When the distance is increased and the distance is reduced, the adhesive force is reduced, but the work such as the positioning operation is facilitated.
[0027]
When bubbles are generated or wrinkles are generated between the decorative sheet 1 and the adherend 25, the direction of alignment of the separating members 5, 5,. As air bubbles and wrinkles are traced along the lines (1) and (2), the air that stays inside travels through the space 13 and is removed from the end opening, so that the air can be finished beautifully.
[0028]
In this way, the operation of attaching the decorative sheet is completed.
[0029]
In the above-described embodiment, the case where the nonwoven fabric is used as the elastic layer 4 has been described. However, other than the nonwoven fabric, foamed polyethylene may be used, and other polyolefin resins having elasticity may be used. What can impregnate an adhesive may be used.
[0030]
In the above-described embodiment, an example was described in which the sheet body 2 having a surface directly decorated was used. However, the sheet body may be composed of a base portion and a decorative portion, and a laminated body thereof may be used. In this case, a decorative portion is formed by forming a base portion of the sheet main body 2 from paper or a polyolefin-based resin, pasting an embossed sheet on the surface thereof, or performing printing.
[0031]
Further, in the above-described embodiment, an example has been described in which the separating members 5, 5,... Are formed in a decorative sheet in which the sheet body 2, the blocking layer 3, and the elastic layer 4 are already integrated. As described above, the separating members 5, 5,... May be formed by laminating, and thereafter, the sheet body 2, the blocking layer 3, and the elastic layer 4 may be integrated.
[0032]
In the above-described embodiment, a polyethylene resin was used to form the barrier layer 3 and the isolation member 5, but other polyolefin-based resins such as a polypropylene resin may be used, and not limited to the polyolefin-based resin. May be used.
[0033]
【The invention's effect】
As described above, the pressure-sensitive adhesive-type decorative sheet manufactured by the manufacturing method according to the present invention is provided so as to overlap the sheet body with a decoration such as a print on the surface, and to block the adhesive. A blocking layer, an elastic layer provided so as to overlap the blocking layer and having elasticity and capable of impregnating the pressure-sensitive adhesive, and protruding from the surface of the elastic layer, being arranged in parallel at predetermined intervals, and having a weak tacky adhesive on the surface. and a plurality of isolating members having a layer, impregnated with adhesive on the elastic layer, by pressing at a certain level or more pressing force to the pasting target deposits, because the are those attached to the pasting target kimono The pressure-sensitive adhesive impregnated in the elastic layer is separated from the surface to be adhered by the separating member, so that it does not stick to the surface to be adhered, as long as it does not exert sufficient adhesive force by pressing even if it is once adhered. For weak adhesive layer on isolation member surface Ri positioning of the decorative sheet temporarily fixed state can be easily performed, can also be affixed easily decorative sheet amateur, does not depend on the craftsman may be applied to the low cost and short term. Further, since the separating members are arranged in parallel at predetermined intervals, spaces between the separating members are opened at both end portions of the separating members, and when the decorative sheet is attached, the decorative sheet is not attached to the decorative sheet. Even if air bubbles are generated between the face and the surface, the air bubbles can escape to the outside from the opening, and the decorative sheet can be stuck beautifully.
[0034]
Further, the integration of the sheet body and the elastic layer is performed by dissolving the polyolefin resin forming the blocking layer while feeding the sheet body, and spreading and coating so as to coat the entire back surface of the sheet body. Before the solidification, the elastic layer is overlaid and pressed through a pressing means composed of a press roll and a cooling roll to perform cooling by cooling.Integration of the separating member with respect to the elastic layer is performed with respect to the elastic layer. The polyolefin resin melted down from the separating member forming die is linearly flowed down, passed through a pressing means consisting of another press roll and a cooling roll, lightly pressurized and cooled and solidified, and the adhesion is performed. The agent is impregnated by applying the separating layer to the elastic layer from above, and then adheres to the separating member surface. By by scraping the adhesive was to form a weakly tacky pressure-sensitive adhesive layer of extremely thin surface of the isolation member, the isolation member can be easily formed, thereby improving the production efficiency , Manufacturing costs are reduced. In addition, it preferably projects to the surface of the elastic layer.
[0035]
The sheet body, the barrier layer, the elastic layer, and the separating member are made of a polyolefin resin, so that they can be recycled.Furthermore, even in the case of incineration, water and carbon dioxide gas are emitted, and CFCs, environmental hormones, It is environmentally friendly because it does not generate harmful substances such as dioxin.
[0036]
In addition, the peeling protection paper which can be peeled off without damaging the adhesiveness of the pressure-sensitive adhesive is applied to the elastic layer via the separating member so that the pressure-sensitive adhesive is suitably protected for a long time until the sticking operation is performed. And the adhesiveness of the adhesive can be maintained.
[Brief description of the drawings]
FIG. 1 is a partially enlarged perspective view showing an example of a pressure-sensitive adhesive decorative sheet manufactured by a manufacturing method according to the present invention.
FIG. 2 is a longitudinal sectional view of the same.
FIG. 3 is a sectional view showing a step of forming a decorative sheet in the manufacturing method according to the present invention.
FIG. 4 is a perspective view illustrating a method of forming a separating member.
FIG. 5 is a longitudinal sectional view of the same.
FIG. 6 is a longitudinal sectional view showing a step of applying an adhesive to an elastic layer.
FIG. 7 is a longitudinal sectional view showing a temporarily fixed state of the pressure-sensitive adhesive type decorative sheet manufactured by the manufacturing method according to the present invention.
FIG. 8 is a vertical cross-sectional view showing an attached state of the above.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 pressure-sensitive adhesive type decorative sheet 2 sheet body 3 blocking layer 4 elastic layer 5 separating member 6 release protection paper 9 dice 10 press roll 11 cooling roll 12 pressing means 13 space 14 press roll 15 dice 16 cooling roll 17 press means 18 Hole 19 Adhesive coater 20 Adhesive 21 Adhesive tray 22 Feed roll 23 Doctor coater (brush)
24 weak adhesive layer 25 adherend

Claims (2)

A sheet body having a decoration such as a print on its surface, a blocking layer provided on the sheet body and blocking the adhesive, and a blocking layer provided on the blocking layer and having elasticity and being impregnated with the pressure-sensitive adhesive. An elastic layer, and a number of separating members projecting from the surface of the elastic layer, arranged in parallel at predetermined intervals, and having a weakly adhesive layer on the surface, impregnating the elastic layer with an adhesive, A method for producing a pressure-sensitive adhesive-type decorative sheet, which is to be adhered to the adhered object by pressing the adhered object with a pressing force of a certain level or more ,
The sheet body and the elastic layer are integrated by dissolving the polyolefin resin forming the blocking layer while feeding the sheet body, spreading the coating so as to coat the entire back surface of the sheet body, and coating the resin. Before the elastic layer is overlaid by pressing and cooling through a pressing means consisting of a press roll and a cooling roll,
The integration of the separating member with the elastic layer is performed by linearly flowing down the polyolefin resin dissolved from the separating member forming die to the elastic layer, and includes a separate press roll and cooling roll. Performed by pressing and lightly pressing and cooling and solidifying through the pressing means,
The pressure-sensitive adhesive is impregnated by applying a separating member to the elastic layer from above,
Thereafter, the pressure-sensitive adhesive type makeup is characterized in that an extremely thin weakly-adhesive adhesive layer is formed on the surface of the separating member by scraping off the adhesive attached to the surface of the separating member. Sheet manufacturing method. 2. The method for producing a pressure-sensitive adhesive type decorative sheet according to claim 1, wherein a peeling protection paper which can be peeled off without damaging the adhesiveness of the pressure-sensitive adhesive is attached to the elastic layer via the separating member .

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