JPH0453745A - Decorative sheet - Google Patents

Abstract

PURPOSE:To prevent not only the penetration of moisture into a decorative sheet from the lining paper thereof but also the generation of folding creases by providing a moisture impermeable resin coating layer rich in elasticity to the lining paper and providing a warping layer on the coating layer. CONSTITUTION:A moisture impermeable synthetic resin coating layer 2 rich in elasticity is provided on lining paper 1 and a warping layer 4 is provided on the coating layer 2. As the synthetic resin of the moisture impermeable synthetic resin coating layer 2 rich in elasticity provided on the lining paper 1, polyvinyl chloride, polyethylene, polypropylene, polyurethane, polyamide, polyester, synthetic rubber or an acrylic resin can be used. As the yarn of the warping layer 4 provided on the synthetic resin coating layer 2, various yarns made of a synthetic fiber such as a polyester fiber and a natural fiber such as a rayon fiber can be used.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a decorative sheet, and specifically, a decorative sheet in which a vertical warping layer is provided on a backing paper, in which a vertical warping layer is provided on a backing paper side. Prevents moisture from penetrating into the vertical warp layer and prevents folding wrinkles (
This invention relates to a decorative sheet designed to prevent the occurrence of tack.

[Conventional technology]

Traditionally, architecture (ceiling materials, wall materials, floor materials, etc.), furniture.

As a decorative sheet used for vehicles, electrical products, erotic goods, bags, etc., it can be printed on base materials such as paper lining or synthetic resin sheets, through a synthetic resin base coat, or directly, such as gravure printing, rotary screen printing, etc. The majority are those with design expressions such as embossing.

In addition, in order to respond to the recent trend toward luxury, as an alternative to these design expressions, the above-mentioned backing paper is provided with woven fabric, or a so-called vertical warping layer is provided in which many threads are arranged in parallel in the vertical direction. A decorative sheet with a design expression has also been developed (for example, see the title of the invention "decorative sheet" filed on the same day by the present inventors).

A decorative sheet with a vertical warp layer or a woven fabric design (hereinafter, "decorative sheet" refers to a decorative sheet with a vertical warp layer or a woven fabric design) Generally, the adhesive is applied to the object to be decorated by applying an adhesive to the backing paper surface during the adhesion process.

In addition, in order to omit the work of applying adhesive during pasting, some measures have been taken, such as applying adhesive to the backing paper surface in advance and covering it with release paper at the manufacturing stage of the decorative sheet.

[Problem to be solved by the invention]

However, in the case of the above-mentioned decorative sheet, as well as the lining paper,
Since both the vertical warping layer and the woven fabric are fibrous,
Fine voids are present due to the entanglement of fibers, and water in the adhesive applied to the backing paper gradually permeates through the voids into the warp layer and the woven fabric side due to a so-called capillary phenomenon.

Furthermore, since there is generally a distance or time gap between the application of the adhesive and the application of the adhesive to the object to be decorated, the above-mentioned capillary phenomenon is promoted, and the adhesive applied to the backing paper surface is The water passes through the vertical warping layer and the woven fabric,
It penetrates to the surface.

If moisture penetrates to the surface, so-called wet paper (
As in the case of attaching a cloth (cloth) to an object to be decorated, it is extremely difficult or impossible to uniformly attach the cloth in a taut state without causing wrinkles on the surface.

In addition, moisture that has penetrated the surface will not only lead to the adhesion of dust, etc. to the vertical warping layer and the surface of the woven fabric during the pasting process or until it dries after the pasting process. It dissolves and mixes dyes in layers and woven fabrics, causing bleeding, and is a cause of surface stains on decorative sheets.

In particular, in the case of a vertically warped layer, the contact area of each yarn with the lining paper is extremely large compared to a woven fabric in which the yarns are woven vertically and horizontally and are in point contact with the lining paper. The phenomenon of water penetration also occurs significantly.

The above-mentioned moisture penetration phenomenon naturally occurs even when adhesive is applied to the backing paper surface in advance and covered with release paper at the manufacturing stage of the decorative sheet mentioned above.Moreover, it takes a long time from manufacturing to pasting. This occurs noticeably. Therefore, in the above-mentioned decorative sheet, it is actually impossible to apply an adhesive in advance at the manufacturing stage.

In addition, during the distance or time gap between the adhesive application process and the pasting process, the decorative sheet described above may be folded to facilitate storage and transportation. Since it is inferior in elasticity to a woven fabric in which threads are woven vertically and horizontally, irrecoverable folding wrinkles (tucks) occur not only in the backing paper but also in the vertically warped layer. In particular, if the warp layer is made of glossy yarn, the occurrence of tack will reduce the gloss.

For this reason, decorative sheets provided with a vertical warp layer have been avoided until now, and some decorative sheets with woven fabric pasted have been on the market.

However, when expressing a design that varies with woven fabric, it is necessary to change the weaving method of the woven fabric itself, so there is a limit to the changes that can be made without increasing the cost.

On the other hand, in the case of a vertical warp layer, it is easy to print on the layer, so it is possible to express designs with infinite variations at low cost. There is an urgent need to solve the above problems.

In consideration of the above points, the present invention provides a decorative sheet having a vertical warping layer, which can prevent moisture from penetrating from the backing paper side of the sheet and prevent the occurrence of folding wrinkles (tucks). The purpose is to

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the decorative sheet of the present invention has the following features:
It is characterized in that a moisture-impermeable and highly elastic synthetic resin coating layer is provided on the backing paper, and a vertical warping layer is provided on the coating layer.

As the backing paper in the present invention, there may be used paper that is commonly used as the backing paper for this type of decorative sheet, or paper that has been given various properties such as flame retardancy depending on the purpose.

Synthetic resins for the moisture-impermeable and highly elastic synthetic resin coating layer provided on the backing paper include polyhinyl chloride, polyethylene, and polypropylene.

polyurethane, polyamide, polyester, synthetic rubber,
Acrylic resin etc. can be used.

Note that, depending on the purpose of use, these synthetic resins are preferably provided with various properties such as flame retardancy.

If the synthetic resin coating layer is too thin, there is no point in providing a core layer, and if it is too thick, not only will the weight increase, but the smoothness of the vertical warping layer will be impaired. In other words, if the coating layer can be provided completely uniformly, no matter how thick it is, it will not impair the smoothness of the vertical warping layer, but with the current technology, some unevenness can be avoided. 2 areas, etc.)
increases as the thickness of the coating layer increases, and these large irregularities impair the smoothness of the vertical warping layer provided on the coating layer. For this reason, in the decorative sheet of the present invention, the above coating layer is 0.01 to 0.07
It is preferable to provide it with a thickness of about mm.

The threads of the vertical warp layer provided on the synthetic resin coat layer include polyester, polyamide, polypropylene,
Synthetic fibers such as polyethylene, rayon, wool, y4.
Various threads made of natural fibers such as cotton and linen, threads with various properties such as flame retardance depending on the purpose, and even dyed threads are used, and there are no particular restrictions on the thickness of the threads. They can be used alone or in combination as appropriate, from extremely thin to very thick.

The decorative sheet of the present invention having the above configuration can be obtained, for example, by the following method.

First, the above synthetic resin coating layer is coated on the backing paper by a rotary screen method, gravure method, offset method, flexo method, doctor knife method, reverse roll method, or other appropriate method to within the above thickness range. , so that the thickness is as uniform as possible.

If the synthetic resin of this synthetic resin coating layer has good adhesion to the yarn used in the longitudinal warping layer, the coating Width of the layer (same as the width of the paper lining, or slightly narrower) - on the cup,
The above threads are evenly drawn and arranged!
! Then, it is pressed onto the coating layer using a roll or the like to form a vertical warping layer.

In addition, if the synthetic resin of this synthetic resin coat layer does not have good adhesion to the yarn used in the vertical warping layer, after gelling the coat layer in a heating furnace or the like, An adhesive is applied onto the coat layer, for example, by the same method as described above for the coat layer.

On this adhesive, place a plurality of the above-mentioned threads that are uniformly aligned and arranged in the width of the adhesive (same as the width of the synthetic resin coat layer, or slightly narrower). Then, it is pressed onto the adhesive layer using a roll or the like to form a vertically warped layer.

The above adhesive may be a synthetic resin adhesive that has good adhesion to the synthetic resin constituting the synthetic resin coat layer and the yarn constituting the vertical warp layer, such as vinyl acetate. type, ethylene/vinyl acetate copolymer type, acrylic type, urethane type.

A polyester synthetic resin adhesive or the like is used.

[Effect]

In the decorative sheet of the present invention, the moisture-impermeable and highly elastic synthetic resin coating layer provided on the lining paper has the effect of preventing moisture from penetrating from the lining paper to the vertical warp layer side. Eggplant.

Therefore, when the decorative sheet of the present invention is applied to the object to be decorated, the moisture in the adhesive applied to the backing paper passes through the fine voids caused by the entanglement of fibers in the backing paper, and is caused by capillary action. It gradually penetrates into the vertical warping layer, but before it reaches the vertical warping layer, it is blocked by the synthetic resin coating layer.

As a result, even if there is a distance or time gap between applying the adhesive and pasting it on the object to be decorated,
Moisture in the adhesive does not penetrate into the inside of the vertical warp layer or even the surface, making it easy to apply uniformly in a taut state without wrinkles, and preventing the moisture from penetrating as described above. There is also no surface staining of the vertical warp layer.

In the decorative sheet of the present invention, an adhesive for adhesion to an object to be decorated may be applied to the backing paper surface in advance during the manufacturing stage.

In addition, the decorative sheet of the present invention does not wrinkle (tuck) even when folded due to the elasticity of the synthetic resin coating layer, and therefore the distance between the adhesive application process and the pasting process can be reduced. Alternatively, it can be folded for ease of storage and transport at any time, without any problem.

In addition, the above synthetic resin coating layer also has the effect of improving the strength of the decorative sheet of the present invention, making it suitable for use not only in wall materials, floor materials, etc., but also in other places where a considerable load is applied.
In addition to this, it is also possible to avoid accidents such as damage during transportation and attachment work.

Furthermore, the above-mentioned synthetic resin coating layer has the effect of imparting good delamination properties to the decorative sheet of the present invention. The decorative sheet can be easily peeled off from walls, floors, etc. by delaminating the backing paper, and the workability of re-covering is improved.

〔Example〕

A synthetic resin coating layer of the type shown in Table 1 is provided on the flame-retardant backing paper to a thickness shown in the table, and the coating layer is coated on the same surface before the coating layer is gelled or after it is gelled in a heating furnace. A vertical warp layer was formed using the yarn shown in the table with the adhesive shown in the table at the yarn density shown in the table.

Table 1 also shows, as comparative examples, those without a synthetic resin coating layer.

FIG. 1 is an explanatory view showing an example of the cross section of the decorative sheet of the present invention obtained in this manner.

In the figure, a synthetic resin coating layer 2 is provided on a backing paper l, and a vertical warping layer 4 is placed on the coating layer 2 via an adhesive 3.
However, if the synthetic resin constituting the coat layer 2 exhibits good adhesion to the yarns of the vertical warp layer 4, the adhesive 3 is not necessary.

Further, regarding the decorative sheets of the present invention shown in Table 1, moisture permeability, elasticity, strength, and interlayer peelability were examined in the following manner. The results are also shown in Table 1.

Moisture permeability: Apply adhesive to the backing paper to a thickness of 0.03 to attach it to the object to be decorated.
The surface condition of the vertical warp layer was examined after applying it with 100 mm and leaving it for one hour. Δ,
Those with a sticky feel are marked with an X.

Elasticity: A layer coated with an adhesive for adhesion to an object to be decorated was folded twice, five sheets in this state were stacked, and the surface condition of the vertically warped layer was examined after being left for one hour.

As a result, visually inspect those with no tack at all.

1. If there are about two tucks, but you can't tell unless you look carefully, O1 If you can visually tell that tack has occurred, Δ, Innumerable tucks have occurred, and the gloss has decreased considerably. Those that are present are marked with an x.

Strength: Assuming that the adhesive has soaked into the object to be decorated,
The transverse wet tensile strength of the decorative sheet was measured.

Peeling property: When the paper was attached to a concrete board and peeled off after being left for 7 days, the backing paper was peeled off cleanly, but there was some variation in the peeling between the eyebrows of the O1 backing paper, but this was not a problem. That's not quite right! [Draw most of the punched paper and some of the vertical warping layer remaining.

Those in which only a portion of the vertical warping layer could be peeled off are marked with an x.

As is clear from Table 1, the decorative sheet of the present invention is extremely superior in water impermeability, elasticity, strength, and delaminability compared to conventional sheets without a synthetic resin coating layer. I understand that.

〔Effect of the invention〕

As detailed above, according to the decorative sheet of the present invention, the synthetic resin coating layer can prevent moisture from penetrating from the back blank paper to the longitudinal warp layer side, so that the adhesive applied to the back blank paper can be This prevents moisture from penetrating into the vertical warp layer, and the decorative sheet of the present invention can be applied in a taut state without wrinkles, making the application process easy.

In addition, since the moisture in the adhesive does not penetrate into the vertical warping layer side,
During the application of the decorative sheet of the present invention, or after application until the adhesive dries, there is no possibility of dust adhering to the surface of the decorative sheet or dye bleeding from the dyed threads of the vertical warping layer. First, surface stains can be prevented.

Furthermore, in the manufacturing stage of the decorative sheet of the present invention, an adhesive for adhering to the object to be decorated may be applied to the backing paper surface in advance.

In addition, according to the decorative sheet of the present invention, the elasticity of the synthetic resin coating layer prevents wrinkles (tackiness) even when folded during the distance or time gap between the adhesive application process and the pasting process. ) does not occur, making it easier to store and transport, and in the case of a vertical warp layer made of glossy yarn, it is possible to prevent a decrease in gloss due to tack.

Further, according to the decorative sheet of the present invention, mechanical strength is improved by the synthetic resin coating layer, so it can be used in places where loads are applied, and damage accidents during transportation and pasting work can be avoided. be able to.

Furthermore, according to the decorative sheet of the present invention, since the synthetic resin coat layer improves interlayer peelability, it can be easily peeled off when reupholstering after use, improving reupholstery workability.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the decorative sheet of the present invention. 1...Backing paper 2...Synthetic resin coat layer 3...Adhesive layer 4...Vertical warping layer

Claims (1)

[Claims] A decorative sheet characterized in that a backing paper is provided with a synthetic resin coating layer that is impermeable to water and has high elasticity, and a vertical warping layer is provided on the coating layer.