JPS59216991A - Retroreflective fabric - 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 The present invention relates to a retroreflective fabric used as clothing or a member thereof.

Nowadays, reducing car accidents involving pedestrians, cyclists, and motorcyclists at night is an extremely important issue.

As one of the countermeasures, it has been proposed to install a retroreflective plate or a retroreflective sheet, which is highly effective.

However, since reflective fabrics suitable for clothing have not yet been provided on the market, they can only be used partially and their widespread use has been delayed.

That is, the retroreflective sheets currently available on the market are not suitable for use as clothing because they are heavy and lack drape, as well as those based on plastic plates and plastic sheets, as well as those based on cloth.

Also, many people feel reluctant to wear it because of its unique appearance.

An object of the present invention is to provide a retroreflective cloth for clothing that is light and drapeable, allows the wearer to wear it in the same way as ordinary clothing, and that also reflects the lights of automobiles, motorcycles, etc. well. be.

That is, the present invention relates to a retroreflective cloth characterized in that a binder containing a reflective pigment is placed in the form of dots on one side of a fiber base, and minute transparent spheres are provided on the binder.

The fabric used in the present invention may be either a woven fabric, a knitted fabric, or a non-woven fabric, and its constituent fibers include known natural fibers, nine synthetic fibers, such as cotton, rayon, wool, nylon, polyester, and acrylonitrile. Can be used by blending or blending fibers.

Examples of the reflective pigment used in the present invention include powders and flakes of reflective substances such as aluminum, copper, titanium oxide, and pearl essence. The binder used in the present invention is one that holds the reflective pigment and fixes the microscopic transparent spheres and the fiber substrate, and is not limited to any material as long as it has a binding force, but it may be a flexible synthetic resin, such as a polyurethane resin, Acrylic resin, polyamide resin, polyvinyl acetate resin, etc. are preferable.
It is applied by known methods such as rotary screen coating. It is also possible to make the reflective fabric less noticeable by coloring the binder in a color similar to that of the base fabric.

In the present invention, the planar shape of the retroreflective composition comprising the binder 9 reflective pigment and microscopic transparent spheres on the fiber substrate must be dot-like in terms of weight reduction and texture. The area ratio is 1 to 35%, preferably 2
．． It is 5 to 25 inches.

Also, the area of the unit dot is the adhesive strength of the microscopic transparent sphere.

From the point of view of reflection performance, it is desirable that it be 0.03 or more, and from the viewpoint of texture and inconspicuousness, it is desirable that it be 8 to 2 or less. Dot density is 35 pieces/cm2 or more, 250 pieces/cm2 or more
cm2 or less is desirable. Dots are evenly distributed.

It is desirable that the device be installed as shown in FIGS. 1 and 2, for example.

The transparent micro spheres used in the present invention are made of glass or plastic, and have a diameter of 100 mm. It is desirable that the refractive index is 1.9 or more below Um.

The method of providing microscopic transparent spheres on the binder composition of the present invention is as follows:
The fine transparent spheres are scattered on a binder composition applied in the form of dots, heated and dried to obtain xK. In this case, the microscopic transparent spheres that did not adhere to the base fabric can be collected and reused.

In order for the substrate to remain effectively retroreflective, it is desirable that the microscopic transparent spheres be embedded 1/4 to 3/4, preferably in a 1 part 2 binder composition.

The degree of embedding is determined by the viscosity characteristics of the adhesive and the amount of adhesion; if embedding is insufficient, it is also possible to pass it between two rubber rolls under pressure, for example. It is also possible to provide a transparent resin layer on the transparent microspheres in order to further strengthen the adhesion of the transparent microspheres to the binder composition.

Example 1 The resin composition of Blend Example 1 was applied to a cotton twill fabric dyed in light gray color in a pattern as shown in Figure 1, with dot center distance 11 being 'lM, dot diameter d1 being Q, and 3m+++ (applied part It was coated with a rotary screen at a ratio of 1.1% of the total area.

Formulation example Lusamine MFlt 34'12 LPFt
100 parts (urethane elastomer manufactured by Dainichiseika Co., Ltd.)
BT Silver WH Part 3 (Aluminum paste made by Japanese and French Vickers) MEK
50 parts of glass beads having a diameter of 50 m and a refractive index of 2.1 were then sprinkled over the entire surface of the base fabric and temporarily fixed to the base fabric via the resin composition, after which free glass beads were removed and the glass beads were heated at 100°C for 1 minute. The adhesion was completed by drying with hot air.

After cooling to room temperature, the fabric was rolled so that the glass beads were partially embedded in the binder layer.The reflective fabric thus obtained was extremely lightweight and had a soft texture. It was interesting to see that a retroreflective composition had been applied.

In addition, it was suitable for clothing and had good retroreflectivity.

Example 2 The resin composition of Blend Example 2 was applied to beige-colored nylon tack in 7 patterns as shown in FIG. 2, with a dot center distance 12 of 0.
It was coated with a 4-Tallice resin with a dot diameter d2 of 0.9 mm and a dot diameter d2 of 0.02 mm (4.5% of the total area of the coated area).

Formulation Example 2 Rezamin ME 8B NFLP 100 parts BT Silver WHa Group 5r-UT325 Yellow 0.2 parts 1sp-TJT63 Mablue 0.05
Part MEK 50m then diameter 5
Glass beads having a refractive index of 0 m and 2.1 were scattered over the entire surface of the base fabric and temporarily fixed to the base fabric via a resin composition. After removing the free glass beads, it was dried with hot air at 110°C for 50 seconds to complete fixation. After cooling to room temperature, roll it.
The glass beads were partially embedded in the binder layer. The reflective fabric obtained in this way is coated so that it is completely invisible to the naked eye, and its texture is almost as soft as the original base fabric.It also has retroreflectivity. It was excellent.

[Brief explanation of the drawing]

FIGS. 1 and 2 are schematic plan views showing the distribution state of the retroreflective composition installed on the fiber substrate constituting the retroreflective cloth of the present invention. Figure 2 shows a dot angle of 60°. 1 - Retroreflective composition - 2 - Fiber base Figure 1 Procedural amendment February 22, 1960 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1. Application for indication of hand properties % Showjug No. 90007 / Name of the invention Retroreflective fabric 3, Person making the amendment Patent applicant: 6B; Nishikyogoku Daimoncho, Ukyo-ku, Kyoto-shi, Tokyo Daimon-cho Yuotsu Obi area Dainic Co., Ltd. President's Board Department Miyoshi Department Date of amendment order Voluntary! , Detailed description of the invention column B of the specification subject to amendment, Contents of amendment (1) Correct "clothing or its parts" in line 1If of page 1 of the specification to "clothing and miscellaneous goods." 0) Correct [Diameter A; OmJ in the 6th line of the same line to ``Diameter s. (3) From the 2nd line to the 1st line O of the same page, ``It was not... Also suitable as clothing...'' was changed to [...
・I didn't have any, but when I shined a car headlight on it in a dark place at night, it glowed very well. Also, it is suitable as clothing...'' is corrected. ←) On page 6, line 7, “The dot diameter d is O1θ2.
Correct the dot diameter d2 to 0.2 mJ.

Claims (4)

[Claims] (1) A retroreflective cloth characterized in that a binder containing a reflective pigment is placed in the form of dots on one side of a fiber base, and minute transparent spheres are provided on the binder. (2) The retroreflective cloth according to claim (1), wherein the ratio of the area of the binder and the micro transparent sphere installation portion to the fiber base is 1 to 35%. (3) The retroreflective cloth according to claims (1) and (2), wherein the transparent micro spheres on the binder consist of a buried portion and an exposed portion. (4) Claim No. 1, characterized in that the binder containing a reflective pigment is colored in a similar color to the fiber base.
) to (3).