JP2000093337A - Shutter type bath cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve physical properties and to realize environmentally friendly waste treatment by forming adjacent hard synthetic resin-made hollow cylinders from an acrylonitrile-butadiene-styrene copolymer resin and forming soft synthetic resin-made belt-like connection pieces connecting the hollow cylinders from a thermoplastic elastomer including no halogen. SOLUTION: A bath cover is constituted of a plurality of hollow cylinders 2 formed in the shape of a flat cylinder, caps 4 each of which is provided at each end of the hollow cylinders 2, and belt-like connection pieces 3 for connecting the hollow cylinders 2. The hollow cylinders 2 and the belt-like connection pieces 3 are formed of an ABS resin and a polyurethane thermoplastic elastomer respectively and the caps 4 are also formed of an ABS resin. By extrusion molding or another method, the hollow cylinders 2 and the belt-like connection pieces 3 are fused in a metal mold into one body. In each of the hollow cylinders 2, a reinforcing piece 21 is integrally formed to joint the upper and the lower wall. Due to this structure, the strength and the ridigity are increased. Moreover, when treating for disposal, there is no occurrence of toxic substances, and mass production can also be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shutter-type bath lid.

[0002]

2. Description of the Related Art Conventional bath lids have been mainly made of a combination of wooden and plastic plates.
BACKGROUND ART A shutter-type bath lid made of a synthetic resin that can be rolled up or folded is widely used because of its ease of handling and the like. Heretofore, as a synthetic resin used for a shutter type bath lid, a vinyl chloride resin has been mainly used as a raw material from the viewpoint of easiness of molding and processing, low cost of the raw material, and the like. However, recently, the effects of toxic substances and gases emitted from products containing vinyl chloride resin or generated during incineration on the human body and the environment have been clarified, and the use of vinyl chloride resin in daily products and various other products has been clarified. There is a growing demand for restrictions and suspensions. In fact, some countries have banned or restricted the use of vinyl chloride resins, and alternative materials have been required.

[0003] Since the problem of vinyl chloride resin emerged,
Many techniques for bath lids using alternative materials have been disclosed. (Patent No. 2732241, JP-A-7-96560
, JP-A-7-111953, JP-A-8-243038, Japanese Utility Model 7-5487,
However, in each case, a polypropylene-based resin is used as the hard synthetic resin for molding the bath lid. Polypropylene resins are used in various products because of their good moldability, but are inferior to other resins in physical properties such as rigidity, hardness, dimensional stability, and secondary workability.
Therefore, in many cases, it is necessary to add an additive or devise a molding method in order to obtain sufficient impact resistance and strength as a bath lid, and as a result, the manufacturing cost of the bath lid is increased. In addition, the strip-shaped connecting piece made of a soft synthetic resin for connecting the hollow cylinders is required to have a strong bonding property with the hollow cylinder, a high anti-slipping effect with the bathtub contact surface, and a high strength of itself. If these are not sufficiently satisfied, the bath lid may be easily deformed, deteriorated, or damaged due to heating during bath heating, bending during opening and closing, and load, which may cause an accident. . Therefore, it is desired that the hard and soft synthetic resins used for the bath lid have higher resistance and strength.

[0004] Bath lids are often made of a plurality of different synthetic resins, and in order to recycle such products after use, it is necessary to first separate each material, which requires cost and labor. I have.

[0005]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned shutter type bath lid, which has high resistance and strength, does not generate toxic substances or gases during disposal, and has a shutter type bath lid. The task is to enable mass production.

[0006]

Means for Solving the Problems * 1 The technical means of the present invention for solving the above-mentioned problems is that the hollow cylinder contains an acrylonitrile-butadiene-styrene copolymer resin, and the band-like connecting piece contains halogen. Molded with no thermoplastic elastomer ”.

The above technical means works as follows. According to the above means, the hollow cylinder of the shutter type bath lid is an acrylonitrile-butadiene-styrene copolymer resin having a very balanced performance as compared with other synthetic resins.
(Hereinafter, referred to as “ABS resin”). It has high resistance and strength in impact resistance, heat resistance, rigidity, hardness and the like. In addition, ABS resin is excellent in dimensional stability and molding processability, so that product molding and processing are easy and suitable for mass production.

Further, by using a strip-shaped connecting piece made of a thermoplastic elastomer containing no halogen for the connection between the hollow cylinders, no toxic substance or gas is generated at the time of disposal, which adversely affects the environment and the human body. There is no. here,
The thermoplastic elastomer refers to various thermoplastic elastomers of polystyrene, polyolefin polyurethane, polyester, and polyamide, and the strip-shaped connecting piece is formed from one of them.

[0009]

According to the present invention having the above configuration, the following specific effects are obtained. By making the hollow cylinder of the bath lid made of ABS resin, the bath lid can be given high resistance and strength to loads and the like. Further, since the ABS resin is excellent in molding processability, it is suitable for mass production, and as a result, it is possible to provide a high strength bath lid to consumers at low cost. Since a thermoplastic elastomer containing no halogen is used as the strip-shaped connecting piece, no toxic substance or gas is generated at the time of disposal processing, so that it is safe. [Others] * 2 Due to the fact that the strip-shaped connecting piece is made of a polyurethane-based thermoplastic elastomer, the joining between the hollow cylinder formed of the ABS resin and the strip-shaped connecting piece is much less than other thermoplastic elastomers. To be strong. In addition, since the bathtub contact surface also exhibits a high anti-slip effect, it is possible to prevent accidents in the bathroom due to slip or damage of the bath lid.

[0010] The polyurethane-based thermoplastic elastomer is
Excellent strength characteristics such as wear resistance, bending fatigue resistance and load resistance. By using this as a connecting piece of a shutter-type bath lid where folding and rolling operations are repeated, a long-lasting non-slip effect and prevention of deterioration and breakage of the strip-shaped connecting piece can prolong the life cycle of the bath lid. . Specifically, comparing the conventional vinyl chloride resin strip-shaped connecting piece with the polyurethane thermoplastic elastomer,
The anti-slip effect has been improved about 1.5 times. Furthermore, when a polyurethane-based thermoplastic elastomer is used for the strip-shaped connecting piece, it can be crushed or dissolved together with the ABS resin hollow cylinder without being separated into each material, and can be reused, thereby reducing recycling costs and labor. Is done.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 and 2 show an example of a shutter type bath lid. The bath lid (1) has a plurality of hollow cylinders (2) and (2) molded into a flat cylindrical shape, caps (4) and (4) attached to the ends thereof, and the hollow cylinders (2) and (2). ) Consisting of strip-shaped connecting pieces (3) and (3) connected in parallel so that they have a predetermined interval. The hollow cylinders (2) and (2) and the strip-shaped connecting pieces (3) and (3) are made of an ABS resin and a polyurethane-based thermoplastic elastomer, respectively, and the cap (4) attached to the end is also made of ABS.
Molded using resin.

In forming the bath lid (1), a hollow cylinder (2) made of ABS resin and a strip-shaped connecting piece (3) formed of a polyurethane thermoplastic elastomer are joined and integrated in a mold in a welded state. Extrusion molding method is used. In one extrusion molding, a long intermediate in which several hollow tubes (2) and (2) are connected by the band-shaped connecting piece (3) is formed. This intermediate body is cut to a predetermined length, and these intermediate bodies are connected to each other by strip-shaped connecting pieces (3) (3) so as to have a size of a bath lid (1) as shown in FIG. The bath lid (1) is completed by attaching caps (4) and (4) to both ends of the hollow cylinders (2) and (2).

FIG. 3 is a sectional view taken along the line AA 'of the bath lid (1) of this embodiment. Inside the hollow cylinder (2), a reinforcing piece is connected so as to connect the center of the top wall (22) and the bottom wall (23) of the hollow cylinder (2) with a trapezoidal cross section.
(21) is provided integrally with the hollow cylinder (2). In addition, the cross section of the hollow cylinder (2) is trapezoidal, so that the bath lid (1) disposed in an expanded state so as to cover the open top of the bathtub
Can be wound up more compactly.

Inserts are protruded from the inner surfaces of the caps (4) and (4) attached to both ends of the hollow cylinder (2).
(2) is pressed into a space surrounded by the reinforcing piece (21), the top wall (22), the bottom wall (23) and the hypotenuse, and is welded by high frequency. Although not shown, a groove is provided in the lower portion of the inner surface of the cap (4), and the lower edge and the bottom wall of the cap (4) are provided.
The contact portion with (23) communicates with the internal space of the hollow cylinder (2).

[Brief description of the drawings]

FIG. 1 is a plan view of a shutter-type bath lid according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A 'of FIG. 1;

[Explanation of symbols]

(1) ... bath lid, (2) ... hollow cylinder, (21) ... reinforcing piece, (3) ... strip-shaped connecting piece, (4) ... cap

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Chen Xu, Taiwan No. 426, Kaohsiung Citizenship No. 426, No. 426, Miyagi Bldg.

Claims (2)

[Claims] 1. A shutter-type bath lid, which is connected in parallel by a band-shaped connecting piece made of a soft synthetic resin so that adjacent hollow pipes made of a hard synthetic resin have a predetermined gap, wherein the hollow pipe is made of acrylonitrile. -A shutter type bath lid in which a butadiene-styrene copolymer resin and the strip-shaped connecting piece are formed of a halogen-free thermoplastic elastomer. 2. The shutter-type bath lid according to claim 1, wherein said strip-shaped connecting piece is made of a polyurethane thermoplastic elastomer.