JPS581000B2 - How to make brushtips - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing brush ears in which a large number of brush ears with integral bases are simultaneously mass-produced using synthetic fibers.

As shown in Conventional Patent No. 94225, it is possible to make a bundle of animal hair into a rectangular solid plate, soak it in an aqueous Arabic glue solution to lightly adhere the whole, and then divide the whole into appropriate sizes of ears. As is well known, since the entire body is lightly glued, the adhesive is removed with alcohol vapor in the subsequent process, and finally, one brush tip is placed in a cylinder, the end is brought out from the cylinder, and the end is removed. The parts had to be fastened with gold thread or thread, which required an extremely complicated process, which was completely unsuitable for mass production, required skill, and was extremely expensive.

The present invention eliminates the drawbacks of the conventional method by heating and welding only the roots of a synthetic fiber bundle and dividing this welded layer to obtain a large number of brushstrokes at the same time.

Next, the method of the present invention will be explained in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a hair bundle of a certain length and a certain thickness made of synthetic fibers such as nylon, polyester, or acrylic and having a thickness of about 4/100 to 25/1000 mm.

This hair bundle 1 is placed in a rectangular frame 2 with the bottom 1a facing upward, and is compressed into a rectangular shape by pressing with a pressing plate 3.

Next, the bottom portion 1a is welded together using a hot iron.

The bristle bundle 1 may be made of fibers that are tapered so that the tip becomes thinner, or the fibers may be tapered after the Ube is fixed.

After the taper process is completed, the brush tip is cut with a cutter to a predetermined width in the vertical and horizontal directions as shown in FIG. 2, to obtain a large number of identical brush ears 4 having square or rectangular bottom portions 4a as shown in FIG. 3.

This brush tip 4 has a rectangular bottom portion 4a, but the portion other than the bottom portion 4a is not fixed, so the manner in which the tip is gathered is no different from a conventional brush tip with a circular bottom portion.

If the rectangular shape of the bottom part is a problem, the shape can be changed by reheating the bottom part 4a after inserting it into a circular shaft cylinder.

According to the present invention, there is no need to fix the bottom part of each hair bundle, and the work of fixing the bottom part of all hair bundles and then dividing them is extremely efficient, allowing for mass production at once, and the work of fixing the bottom part of each hair bundle. It has the characteristics that there is no variation in the amount of hair bundles, that it can be manufactured even by an amateur without any skill, and that it can provide a brush tip with the same performance as a conventional brush tip at an extremely low cost.

[Brief explanation of the drawing]

The figures show one embodiment of the method of the present invention, in which Fig. 1 is a perspective view when compressed into a rectangular shape, Fig. 2 is a perspective view of a hair bundle with a fixed bottom, and Fig. 3 is a perspective view of the hair bundle when it is compressed into a rectangular shape. FIG. 2 is a perspective view of one brush tip obtained by dividing a hair bundle. 1... Hair bundle, 1a... Hair bundle bottom, 2... Rectangular frame, 3... Pressing plate,
4... brush tip, 4a... brush tip bottom.

Claims (1)

[Claims] 1 A hair bundle made of synthetic fibers of a certain length is placed in a rectangular frame, compressed into a rectangular shape by pressing with a pressure plate, and then only the roots of the compressed hair bundle are heated and welded to form a thin welded layer. A method for manufacturing a brush tip, in which a plurality of brush tips having a rectangular welded root are simultaneously formed by making uniform cuts in the welding layer in the vertical and horizontal directions using a cutter.