JPH0126433Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to synthetic resin wallpaper that can be easily replaced.

Synthetic resin wallpapers, especially vinyl chloride wallpapers, have been used in large quantities in recent years due to their free colorability, excellent printability, expressive texture through embossing, and good physical properties such as flame retardancy and stain resistance.
Particularly recently, highly foamed wallpapers have been used in which the vinyl chloride resin layer is highly foamed, and this highly foamed layer is used to provide a deep concave-convex pattern.

The highly foamed wallpaper is used as a high-quality wallpaper because it can express a large, deep concave-convex pattern and is soft to the touch, but it has been found that it has a serious drawback. The problem is that the wallpaper is extremely difficult to remove when replacing it. Not only PVC wallpaper, but all wallpapers always need to be replaced due to stains, tears, fatigue, etc. At this time, it is important to check whether the previously pasted wallpaper is easy to remove or not, that is, if the installed wallpaper is 2 years old. An important factor is whether the adhesive can be removed cleanly when reapplied after three years.

Generally used low-foam or non-foam PVC wallpaper is excellent in this respect, and when it is removed when re-pasting, the backing paper can be removed by peeling off a part of the upper part of the wall and then pulling it by hand. The PVC layer peels off from between the layers, leaving a thin paper surface all over the wall. This wall surface is smooth and requires almost no surface preparation, allowing new wallpaper to be applied immediately.

However, highly foamed PVC wallpaper does not have such peeling characteristics, and when it is reattached, the highly foamed layer is torn into small pieces, and the torn residue of the highly foamed layer adheres to the wall surface, resulting in an extremely ugly peeling condition. In this state, it is not possible to immediately apply wallpaper, and a great deal of effort and time is required to clean the base and prepare the base.
This phenomenon is thought to be due to the fact that the strength of the highly foamed PVC layer is lower than the adhesive force between the highly foamed PVC layer and the paper. Therefore, the highly foamed PVC layer is continuous.
This seems to be due to the fact that only the highly foamed PVC layer was peeled off without peeling between the layers of the backing paper.

The present invention was devised to eliminate such drawbacks of highly foamed PVC wallpaper, and an example of its implementation will be described with reference to the drawings. Layer 2. This lamination may be done by either a rolling-hot lamination method using a calendar method or a coating-gelling method using a paste resin, but the thickness is sufficient to form a complete sheet layer on the backing paper, that is, a thickness of 0.05 mm or more. layer.

Next, a highly foamable synthetic resin layer, such as a vinyl chloride resin layer, is provided on this sheet-like non-foamed synthetic resin layer 2 by a calendar method or a paste method, and then
These are placed in a foaming furnace and heated and foamed to obtain a highly foamed synthetic resin layer 3 (vinyl chloride resin layer). In this case, an arbitrary uneven pattern 4 may be provided on the surface by an embossing method.

The highly foamed PVC wallpaper of the present invention thus obtained was pasted onto concrete 6 using glue 5.
After completely drying and leaving until the backing paper and concrete exhibit sufficient adhesion, when this highly foamed PVC wallpaper is peeled off, the backing paper 1 separates between the layers (internal destruction) as shown in Figure 2. It is separated into a layer (backing paper) 1' attached to the non-foamed layer 2 and a layer (backing paper) 1'' attached to the concrete 6 via the glue 5. The remaining 1'' side of the backing paper is a little fluffy due to the paper pulp fibers, but it is smooth overall, and new wallpaper can be attached without any preparation of the surface.

On the other hand, in the case of conventional highly foamed PVC wallpaper (Fig. 3) without the non-foamed layer 2, the glue 5
When it is attached to the concrete 6 using the PVC layer 3 and attempted to be removed after drying, the highly expanded PVC layer 3 is removed as shown in Fig. 4.
Internal destruction occurs in part 1, and the highly foamed layer 31' is torn off and the highly foamed layer 31'' that remains attached to the backing paper 1 is separated, leaving the concrete wall in an extremely ugly peeling state. It is not possible to paste new wallpaper on such a concrete wall surface, so the remaining highly foamed PVC layer 31'' must be removed by surface preparation such as carving and sanding, or in some cases, backing paper should be removed. It requires work such as carefully removing dirt from each step. This kind of ground preparation is extremely difficult and requires a great deal of labor and time, and is therefore a work most disliked by construction contractors.

The wallpaper according to this invention is between the backing paper and the high foam layer.
Since the non-foamed synthetic resin layer with a thickness of 0.05 mm is integrally laminated, if it is pasted on a concrete wall using glue and then peeled off when re-sticking, the backing paper will be internally destroyed and some pulp fibers will be left on the wall. However, the overall surface is smooth and new wallpaper can be pasted on top of it without making any preparations. On the other hand, if there is no non-foamed layer or
If it is less than 0.05 mm, as mentioned above, the foam layer will be internally destroyed, resulting in disadvantages and inconveniences such as removal of the residual layer and preparation of the base.However, in the case of the present invention, such disadvantages and complicated work can be avoided. It is extremely suitable for synthetic resin wallpaper, especially highly foamed PVC wallpaper.

The synthetic resin wallpaper according to the present invention is effective for wallpapers using soft synthetic resins such as soft vinyl chloride resin, polypropylene, polyethylene, EVA, and 1,2-polybutadiene, and is particularly limited to soft vinyl chloride resin. It's not something you can do.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing an example of the implementation of the synthetic resin wallpaper of the present invention. Figure 2 is an explanatory sectional view showing how it is peeled off after being attached to a concrete surface using glue. Figure 3 is a conventional synthetic resin wallpaper. Cross-sectional view of resin wallpaper FIG. 4 is an explanatory cross-sectional view showing the state in which it is peeled off from a concrete surface. In the figure, 1 is a backing paper, 2 is a non-foamed synthetic resin layer, and 3 is a highly foamed synthetic resin layer.

Claims (1)

[Scope of utility model registration request] A synthetic resin wallpaper comprising a non-foamed synthetic resin layer with a thickness of at least 0.05 mm laminated on the top surface of backing paper, followed by a highly foamed synthetic resin layer.