JPS6059326B2 - matte thread - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a matte yarn made of vinylidene chloride-based synthetic resin.

In recent years, hair for dolls has become more luxurious, and the color tone, luster, etc., are required to be close to that of Daisei.

In addition, human hair is used in some Western-style hair to make it less distinguishable from natural hair, but it is difficult to obtain and therefore very expensive, so Daisei Similar artificial hair is required. On the other hand, hair for conventional dolls has been selected and used that is relatively similar to Daisei's, but it is still too shiny and expensive dolls are far from that image, giving the doll itself a cheap impression. is giving.

Therefore, for the purpose of matting hair for dolls, silicon oxide etc. are used as a matting agent.
When spinning monofilaments with a diameter of 50 to 150 μm for use in hair, the stability of the obtained monofilaments was extremely poor due to excessive water absorption and poor spinnability. As a result of intensive research in order to obtain a stable matte thread that eliminates the conventional cheap luster, the inventor of the present invention found that when making vinylidene chloride synthetic resin into monofilament for doll hair, the conventional silicon oxide luster was eliminated. If Burl pigment is included in place of the eraser, a very good matting effect will be achieved, and at the same time, the stability will not be compromised in terms of water absorption, stringability, etc., and artificial hair similar to Daisei will be created. This is a new discovery.

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a matte yarn which eliminates the cheap luster of the conventional yarn and is suitable for making hair for dolls. In order to obtain the matte yarn of the present invention, in addition to adding a desired pigment as a coloring agent to the vinylidene chloride-based synthetic resin, a bar pigment is also added to make the resin matte.
It is manufactured by forming a monofilament with a diameter of about 50 to 150 μm.

The vinylidene chloride-based synthetic resin used includes a copolymer of vinylidene chloride and vinyl chloride, and in particular, the weight ratio of the copolymer is 90% vinylidene chloride:vinyl chloride.
~70: 10 to 30 is good.

The var pigment to be contained in this vinylidene chloride synthetic resin is Talc 4684N from Dainichiseika Co., Ltd.
Among them, mica coated with titanium oxide is particularly good. The amount added may be an amount that can produce a matting effect, for example, 0.1 to 2% by weight per 10% by weight of the resin, preferably 0.2 to 1.0% by weight. be. Furthermore, when obtaining the matte thread of the present invention, in order to ensure the plasticity and stability of the monofilament obtained, an adipic acid plasticizer is added in an amount of 1 to 1 weight percent, an epoxy type, and a benzotriazole based on 10 weight percent of the resin. It is preferable to add both of the system stabilizers in an amount of 1 to 1% by volume.

Monofilament is spun using a commonly used method. For example, a desired compound is extruded through a nozzle, then rapidly cooled in a quench bath, and then the filament is drawn by a factor of 3 to 5 using a godet roller with a speed difference. This is done by making the thread have a diameter.

In the matte yarn of the present invention obtained as described above, the mica of the Burl pigment is stretched, and as the yarn is stretched, the resin near the mica is not stretched uniformly, creating crack-like voids, resulting in a rough surface. Therefore, a matte effect is obtained due to the diffused reflection of light on the surface.

Moreover, unlike conventional silicon oxide matting agents, hygroscopicity is not observed, the yarn has good spinnability, can retain a slight burl color tone, and does not have a cheap luster. It has been found that these phenomena are particularly noticeable when the filament diameter is 50 to 150 pm, ensuring a high quality image for the hair. Therefore,
The matte yarn of the present invention is not only suitable for use as hair for dolls, but also has the potential to be used for hair on Western dolls.

The matte yarn of the present invention will be explained below using Examples.

Examples 1-2 Vinylidene chloride (hereinafter referred to as VD).

) and vinyl chloride (hereinafter referred to as VC) copolymer (
■D/■C weight ratio: 90-70/10-30) 100
% by weight, and extruded through a nozzle.

After extruding through a nozzle, it was rapidly cooled in a quench bath at about 10° C., and drawn 3 to 5 times using godet rollers with different speeds to obtain a thread with a diameter of about 100 Pn1. The respective amounts shown in Table 1 were used to obtain threads of the colors shown in the table. These matte threads are made with acid as a traditional matting agent. It is particularly excellent in that it eliminates the disadvantage that silicon oxide and the like absorb water during the spinning stage because they are hygroscopic.

Next, we compared the stability with conventional products.

Stability Experiment A strength test using a chopper was conducted using the yarns of Examples 1 and 2 and the conventional yarn (containing silicon oxide) having the same diameter.

As a result, it was found that the yarns of Examples 1 and 2 showed no difference in strength and elongation from conventional products.

Claims (1)

[Claims] 1. Matte thread containing 0.1 to 20% by weight of pearl pigment based on 100% by weight of vinylidene chloride synthetic resin and having a diameter of 50 to 150 μm.