JP2000158608A - Cushioning material and lamellar molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain performance equivalent to that of a polyvinyl chloride product by a method in which in a lengthy cushioning material which is fitted to the fringe of furniture and others and formed to have a prescribed cross-sectional shape by extrusion molding, a core material is formed from a material having prescribed hardness and elasticity, and the surface layer and lower side of the core material is coated with a polyolefin material. SOLUTION: In a cushioning material 1 to be fitted to furniture and others by engaging the insertion piece 2 of a lengthy part which has a T-shaped cross- sectional form and extends downward with a groove-shaped fitting part formed in the fringe and others of furniture, projected stripes 3... to increase frictional resistance and to prevent extraction when engaged with the fitting part are formed in the longitudinal direction in the insertion piece 2. A coat layer 1b is formed in the outer layer place (upper side surface) exposed to the outside during the use of a core material 1a as a cushioning material main body. The coat layer 1b is formed from a polyolefin, especially a thermoplastic polyolefin elastomer. In this way, the properties equivalent to those of a polyvinyl chloride product can be obtained to avoid the use of polyvinyl chloride.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material and a layered product capable of removing vinyl chloride.

[0002]

2. Description of the Related Art A cushioning material attached to an edge of furniture is formed of vinyl chloride resin. This vinyl chloride resin can be set to have appropriate hardness and elasticity by being softened by the addition of a plasticizer, and is not scratched even if rubbed with other things, the dents are returned even when rubbed, and the appearance of the surface is also improved. Is a good material as a cushioning material.
Due to such properties, vinyl chloride is also used for non-slip for stairs, soft skirting boards, seaming materials and the like.

[0003] However, since vinyl chloride is liable to generate dioxin when burned, it is desired to avoid its use from the viewpoint of environmental protection.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cushioning material and a layered molded product having the same performance as a product made of vinyl chloride without using vinyl chloride.

[0005] Means for that purpose is a long cushioning material formed into a predetermined cross-sectional shape by extrusion molding. The core material is formed of a material having a predetermined hardness and elasticity.
At least the core material, an outer layer portion exposed to the surface during use,
That is, it is characterized in that it is a cushioning material in which the surface layer and the lower side are covered with a polyolefin-based material.

Another means is that the core material is formed of a material having a predetermined hardness and elasticity, and at least the outer layer portion of the core material that is exposed when used is a cushioning material coated with a polyolefin-based material. Features.

Still another means is an elongated layered product formed by extrusion into a plurality of layers to have a predetermined cross-sectional shape, wherein at least a core material formed of a material having a predetermined hardness and elasticity is used. It is characterized in that it is a layered product in which a polyolefin-based material is coated in a layer on an outer layer portion which is sometimes exposed to the surface.

It is preferable that the polyolefin material in the cushioning material is composed of a polyolefin thermoplastic elastomer.

[0009] The core material of the cushioning material may be formed by mixing polyolefin plastomer and enhanced polyethylene.

[0010]

According to the structure of the cushioning material or the layered product described above, since the outer layer portion of the core material that is exposed when used in the core is covered with the polyolefin-based material,
At the time of use, the polyolefin-based material is located on or near the surface. This polyolefin-based material has good impact resistance, stress crack resistance, heat resistance, low-temperature characteristics, and weather resistance, and the appearance of the surface can be appropriately set, so that the altitude and elasticity of the core material can be set as specified. For example, as in the case of vinyl chloride, a sufficiently usable property can be obtained.

Further, when formed by extrusion, as in the case of the cushioning material of claim 1 or the multilayer molded product of claim 3, the layer of the polyolefin-based material can be formed simultaneously with the molding, so that the production is simple.

And, without using vinyl chloride for the core material,
For example, when the core material is formed by mixing a soft polyolefin plastomer and a hard enhanced polyethylene so as to obtain predetermined properties (hardness and elasticity) as in the cushioning material of claim 5, the generation of dioxin is prevented. Can solve environmental problems. Although the above polyolefin plastomers are relatively expensive, they can be used inexpensively because they are mixed with inexpensive enhanced polyethylene, so that the cost is not increased more than necessary, and the price is as low as that of conventional products. Material can be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a cushioning material 1 as an example of a layered molded product. The cushioning material 1 is formed so as to be attached to an adhered portion such as an edge of furniture, and has a T-shaped long cross section. is there. The part extending downward is the insertion piece 2 that is inserted into the adherend.
Thus, a plurality of ridges 3... Which increase frictional resistance and prevent the pull-out are formed in the length direction.

This cushioning material 1 is formed by extrusion molding. As shown in FIG. 2, the outer layer portion of the core material 1a as a main body forming a T-shape at this time, which is exposed to the front when used, that is, the core material 1a A coating layer 1b is formed on the upper surface of the substrate.

The material of the coating layer 1b is preferably a polyolefin-based material, particularly a polyolefin thermoplastic elastomer due to its properties. Further, a material that generates dioxin at the time of incineration, such as vinyl chloride, is not used for the core material 1a. The buffer material 1 has necessary properties (hardness and elasticity). For example, a soft polyolefin plastomer and hard enhanced polyethylene may be mixed to obtain predetermined hardness and elasticity. It is advisable to mix the soft polyolefin plastomer and the hard enhanced polyethylene at about 5: 5 to 4: 6. The thickness of the coating layer 1b is, for example, 0.1 mm. It may be as thin as several mm.

In the cushioning material 1 configured as described above, a polyolefin-based material comes into contact with the outside when used. In other words, impact resistance, stress crack resistance, heat resistance, low temperature characteristics, and weather resistance are good, so if the altitude and elasticity of the core material are set as specified, it will be sufficient as in the case of vinyl chloride. Thus, properties that can be used are obtained.

Moreover, since it is formed by extrusion, the coating layer 1b of the polyolefin-based material can be formed simultaneously with the molding of the core material 1a, so that the production is simple.

Then, without using vinyl chloride for the core material 1a,
Since the soft polyolefin plastomer and the hard enhanced polyethylene are mixed and formed so as to obtain predetermined properties (hardness and elasticity), generation of dioxin can be prevented and environmental problems can be solved. Although the above polyolefin plastomer is relatively expensive, it can be used inexpensively because it is mixed with inexpensive enhanced polyethylene, so that the cost is not increased more than necessary, and the price is the same as that of the conventional product. Material can be obtained.

The coating layer 1b may be formed on the entire periphery of the cushioning material 1 as shown in FIG.

In the case of the cushioning material 1 formed by injection molding, after forming the core material 1a, the coating layer 1b is formed on the surface thereof by an appropriate means such as adhesion or welding.

Further, in order to obtain proper properties, the coating layer 1b
A coating layer of another resin may be formed on the substrate. For example, if a very small amount of a soft or hard acrylic resin is coated, the weather resistance is further improved.

As the layered molded product, in addition to the cushioning material 1, for example, there is a non-slip for stairs shown in FIG. In FIG. 4, 4a is a core material, and 4b is a coating layer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cushioning material.

FIG. 2 is an enlarged sectional view of a cushioning material.

FIG. 3 is an enlarged sectional view of a cushioning material.

FIG. 4 is a sectional view of a non-slip for stairs.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Buffer material 1a, 4a ... Core material 1b, 4b ... Coating layer 4 ... Non-slip for stairs

Claims (5)

[Claims] 1. A long cushioning material formed into a predetermined cross-sectional shape by extrusion molding, wherein a core material is formed of a material having a predetermined hardness and elasticity, and at least the core material has a surface when used. Buffer material with a polyolefin-based material coated on the outer layer portion exposed to 2. A cushioning material in which a core material is formed of a material having a predetermined hardness and elasticity, and a polyolefin-based material is coated on at least an outer layer portion of the core material exposed when used. 3. A long layered molded product formed into a predetermined cross-sectional shape by a plurality of layers by extrusion molding, wherein a core material formed of a material having a predetermined hardness and elasticity is exposed at least when used. A layered product in which a polyolefin-based material is coated in a layer on an outer layer portion to be formed. 4. The cushioning material according to claim 1, wherein the polyolefin-based material is a polyolefin-based thermoplastic elastomer. 5. The cushioning material according to claim 1, wherein said core material is formed by mixing polyolefin plastomer and enhanced polyethylene.