JPS59217887A - Slat of blind - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a slat for a blind having weather resistance and heat resistance.

Conventional technology Conventionally, the materials used for blind slats are vinyl chloride resin and ABS resin (acrylonitrile, butadiene, styrene resin), which has advantages such as mechanical properties, moldability, and low cost as a mixed material. ), but since ABS resin was used to meet the weather resistance required for the slats of blinds, there were problems such as discoloration due to aging, for example.

Purpose The purpose of the present invention was to solve the above-mentioned problems, and to provide a slat of a blind that has excellent weather resistance, heat resistance and flame retardancy, and also has excellent dimensional stability when molded. Another object of the present invention is to provide a blind slat that can be easily extruded.

In this invention, 40 to 70 parts by weight of vinyl chloride resin, preferably 50 parts by weight, and 30 to 60 parts by weight, preferably 50 parts by weight of a weather-resistant resin obtained by copolymerizing acrylonitrile and styrene into a weather-resistant comb are mixed together. The slats of the blind are formed by extrusion molding.

First Example Below, the first example will be explained according to FIGS. 1 to 4. The substrate 1a of the slat 1 is made of a weather-resistant resin (hereinafter referred to as acrylonitrile-ethylene-propylene-styrene resin) made of vinyl chloride. ) are extrusion-molded by mixing approximately 50 parts by weight of foamed resin with each other, and are formed into a corrugated cross-section. A thin aluminum film 2 having a thickness of 2 to 3 microns is thermally transferred onto the upper surface of the substrate 1a.

This aluminum thin film 2 is thermally transferred from a transfer film. To explain the transfer film 3 according to FIG. 2, the base material 4 is composed of a polyester film, and one side of the base material 4 is hairline-processed, and a 2 to 6 micron aluminum film is coated with a peeling layer 5 made of silicone resin. A thin film 2 is deposited on the surface of the aluminum thin film 2, and an adhesive layer 7 is formed on the surface of the aluminum thin film 2 via a concealing layer 6 made of pigment.

The transfer process using the transfer film 3 configured as described above is performed subsequent to the molding process of the substrate 1a, and the transfer film 3 is continuously attached onto the substrate 1a.

At this time, the temperature of the substrate 1a is 170°C to 180° immediately after molding.
When the transfer film 3 is pressed and adhered to the substrate 1a by a roller, the aluminum thin film 2 is transferred to the substrate 1a. Then, when the base material 4 is peeled off, a slat 1 whose two sides are covered with the aluminum thin film 2 is formed.

The slat 1 configured as described above can reduce the weight of the blind made of foamed resin and has a high heat insulation effect.

Slat 1 is made of vinyl chloride resin and Acryliconi 1 heliyl ethylene propylene styrene resin.
Because it is formed by mixing parts of vinyl chloride resin, it has excellent flame retardancy, self-extinguishing properties, and weather resistance, and is easy to extrude. It has excellent heat resistance, moldability and dimensional stability.

Each slat with a length of 200 ttm, which was extruded with varying mixing ratios of vinyl chloride resin and acrylonitrile/ethylene propylene/styrene resin, was placed on the second side of a heat-insulated aluminum plate and left for one hour in each section. The measurement results are shown in Table-1. Table 2 shows the results of the flame retardant test according to UL standards.

A: Vinyl chloride resin B: Acrylonitrile. Ethylene propylene/styrene resin table-2 A: Vinyl chloride resin B: Acrylonitrile/ethylene propylene/styrene resin Also, acrylonitrile/ethylene propylene/styrene resin is ABStMB as shown in Figures 5 and 4.
Compared to K (acrylonitrile-butadiene-styrene resin), the initial properties such as gloss and impact strength can be maintained for a long period of time, so the slat 1 also has excellent weather resistance.

In this embodiment, the upper surface of the slat 1 is covered with a hairline thin aluminum film 2, which has excellent radiant heat reflection properties and further promotes the heat insulation effect.
Has a defensive effect. The thickness of the aluminum thin film 2 is 2 to 2 microns, so the difference in physical properties such as thermal expansion coefficient with respect to the substrate 1a has almost no effect, and the slat 1 will have bending, warping, etc. due to aging. Never. moreover,
The aluminum thin film 2 can be easily processed even on the corrugated substrate 1a by thermally transferring it from the transfer film 3, so the process is simpler and more productive than the manufacturing method of directly depositing the aluminum thin film on the slat 1. It has excellent properties and is inexpensive to manufacture.

In the above examples, vinyl chloride resin and acrylonitrile
Ethylene propylene styrene i Ift habo 50
Although they were mixed in parts by weight, as shown in Table 11 and Table 2, even if the vinyl chloride resin was 60 parts by weight and the AC110 nitrile ethylene propylene styrene resin was 40 parts by weight, almost the same effect as in the above example was obtained. is obtained. or,
Furthermore, if the u'nyl chloride resin is made to be 70 parts by weight and the acrylonitrile/ethylene propylene/styrene resin is made to be 60 parts by weight, the effect is slightly weakened, but there is no problem in practical use.

In addition, if the mixing ratio of vinyl chloride resin is increased beyond this, the shrinkage rate will increase, resulting in poor dimensional stability and deformation due to environmental changes.
It becomes easier to bend. Due to this deformation, the function as a 9-blind is impaired due to poor sealing between the slats.

On the other hand, when the vinyl chloride resin is 30 parts by weight and the acrylonitrile O ethylene propylene O styrene resin is 70 parts by weight, the flame retardance decreases and it is difficult to maintain the function as a slat. Since it is expensive, the cost is high and there are problems in practical use. From the above, one limit is up to 40 parts by weight of vinyl chloride resin and 60 parts by weight of acrylonitrile/ethylene propylene/styrene resin.

Second Embodiment Next, a second embodiment will be explained. This embodiment differs from the first embodiment only in that acrylonitrile/acrylic 0-styrene resin is used as a weather-resistant resin instead of acrylonitrile/ethylene propylene/styrene resin. Note that this weather-resistant resin is a copolymer of acrylic rubber as a weather-resistant rubber, acrylonitrile, and styrene.

As mentioned above, in the case where vinyl chloride resin and acrylonitrile/acrylic/styrene resin are mixed with each other in 5 parts, in addition to the properties of the vinyl chloride resin described in the first example, the properties of the acrylonitrile/acrylic/styrene resin, In other words, it has excellent impact resistance, heat resistance, and weather resistance.
Since it has excellent coloring properties, it can be colored in various ways.

In addition, acrylonitrile, acrylic, and styrene resins have excellent moldability, so they can be molded using slat processing.

can be easily done.

In this example as well, when the mixing ratios are changed as in the first example, for example, when the vinyl chloride resin is changed to 70 parts by weight and the acrylonitrile/acrylic/styrene resin is changed to 60 parts by weight, the same effect as described above can be obtained. It is being In addition, if the amount of vinyl chloride resin mixed is increased more than this, twisting will occur as the temperature increases, which will cause problems in practical use.

On the other hand, if the mixing ratio is up to 40 parts by weight of vinyl chloride resin and 60 parts by weight of acrylonitrile/acrylic/styrene resin, there is no problem in actual use, but if the amount of niaxonitrile/acrylic/styrene resin is increased This reduces the flame retardancy and poses a problem in use.

Furthermore, it was confirmed in the first example that this acrylonitrile/acrylic/styrene resin had weather resistance similar to that of the acrylonitrile/ethylene propylene/styrene resin as shown in FIGS. 6 and 4.

Third Embodiment Next, a third embodiment will be explained. This embodiment differs from the first embodiment only in that acrylonitrile/ethylene styrene resin is used. Note that this weather-resistant resin is made by copolymerizing acrylonitrile and styrene with chlorinated polyethylene rubber as a weather-resistant rubber.

As mentioned above, a slat made by extruding a mixture of 50 parts by weight of vinyl chloride resin and acrylonitrile/chlorinated polyethylene/styrene resin has the characteristics of the vinyl chloride resin described in the first embodiment. The properties of chlorinated polyethylene and styrene resins, namely their excellent heat resistance and weather resistance, allow them to be used for long periods of time, and their excellent antistatic properties prevent dirt from adhering to the processed and formed slats. It becomes less. Furthermore, acrylonitrile, chlorinated polyethylene, and styrene resins have excellent self-extinguishing properties and flame retardancy, and also have excellent thermal stability and flowability, making them easy to mold into.

In this example, the mixing ratio of the vinyl chloride resin and the chlorinated polyethylene/styrene resin was 70ii, as in the above-mentioned first and second examples.
i part, 30 parts by weight of acrylonitrile, chlorinated polyethylene, styrene resin, 40 parts by weight of vinyl chloride resin, acrylonitrile, chlorinated polyethylene,
When the amount of styrene resin was 60 parts by weight, the properties of both resins were not lost. However, when the amount of vinyl chloride resin is increased from 70 parts by weight, the same problem as in the first example occurs, and when the amount of acrylonitrile/chlorinated polyethylene/styrene resin is increased from 60 parts by weight, the flame retardance is Although it can be maintained, there was a problem in practical use on the first side.

Furthermore, it was confirmed that this acrylonitrile/chlorinated polyethylene/styrene resin had the same weather resistance as the moacrylonitrile/ethylene propylene/styrene resin.

Effects As detailed above, this invention uses vinyl chloride resin to
~70 parts by weight, preferably 50 parts by weight, and 30-60 parts by weight, preferably 50 parts by weight of a weather-resistant resin made by copolymerizing weather-resistant rubber with acrylonitrile and styrene are mixed together and extruded to form a blind. This invention has excellent weather resistance and heat resistance required for slats, has excellent moldability and dimensional stability, and has the effect of facilitating extrusion molding, making it an excellent invention for industrial use.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a slat of the first embodiment embodying this invention, Fig. 2 is a sectional view of a transfer film, and Fig. 6 is a weather resistance test of an acrylonitrile ethylene propylene resin and an ABS resin based on an isot impact strength test. Figure 4 is a graph showing a comparison of weather resistance in terms of glossiness between acrylonitrile/ethylene propylene/styrene resin and ABS resin. Slat 1, substrate 1a, aluminum thin film 2゜Patent applicant
Kajima Corporation Tachikawa Blind Industry Co., Ltd. Toppan Printing Co., Ltd. Representative Patent Attorney Hironobu Onda IT! I (hours) Impact strength retention (Santsuya Ino Weather Meter) Opening time (hours) Weather resistance against glossiness Continued from page 1 0 Inventor Manabu Takagi Kajima Corporation 1-2-7 Motoakasaka, Minato-ku, Tokyo Inventor: Masaaki Sato, 1-2-7 Motoakasaka, Minato-ku, Tokyo Inventor: Mitsuyoshi Tachikawa, 4-30-7 Yoyogi, Shibuya-ku, Tokyo Inventor: Mitsuyoshi Tachikawa, 4-30-7 Yoyogi, Shibuya-ku, Tokyo Inventor: Eiji Kaneko, 4-30-7 Yoyogi, Shibuya-ku, Tokyo Inventor: Tomio Takahashi, 1-5-1 Taito, Taito-ku, Tokyo, Toppan Printing Co., Ltd. Applicant Tachikawa Blind Industry Co., Ltd. 4-30-7 Yoyogi, Shibuya-ku, Tokyo ■Applicant Toppan Printing Co., Ltd. 1-5-1 Taito, Taito-ku, Tokyo

Claims (1)

[Claims] 1. 40 to 70 parts by weight of vinyl chloride resin, preferably 50 parts by weight
A slat for a blind, characterized in that it is extruded by mixing and extrusion molding 50 to 60 parts by weight, preferably 50 parts by weight, of a weather-resistant resin made by copolymerizing acrylonitrile and styrene into a weather-resistant comb. 2. To the slab 1 of the blind according to claim 1, wherein the weather-resistant comb is ethylene propylene rubber. 3. The slat for a blind according to claim 1, wherein the weather-resistant rubber is acrylic comb. 4. The slat of the blind according to claim 1, wherein the weather-resistant rubber is chlorinated polyethylene rubber.