JPH0268008A - Monofilament for brush, manufacture of monofilament, and rotary brush using monofilament - Google Patents

Abstract

PURPOSE:To obtain the title monofilament in which the breaking and the detaching of a fine fibrous structure never occur when washing more is executed by integrating a lengthy drawn tape and powdered high crystalline polyolefine, the type of which is the same as that of the tape except that only the molecular weight of the polyolefine is slightly lower than that of the tape, and drawing the integrated result. CONSTITUTION:When a drawing tape 1 is passed through a nozzle 4 at 10-100 mm/min velocity, a high crystallue polyolefine powder 9 dropped on the drawing tape 1 is integrated with the drawing tape 1 and draw. Many monofilaments 11 obtained in this manner are bundled and cut in a fixed length by a cutter, the bundles are folded in two, and folded parts 11a are inserted into respective holding holes 13 drilled in a vinyl chloride cylindrical body 12 as a rotary base. The inserted parts are connected with each other with a thread 14 and fixed with an adhesive 15. Thus, even when the washing work is executed using the title rotary brush, a high polymer fine piece never detaches from the filament, and the brush can be worthy for a long time service.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a filament suitable for mainly forming a rotating brush for car washing, etc., and a method for manufacturing the filament.

and a rotating brush formed using the same.

[Conventional technology]

Conventionally, filaments for rotating brushes have been manufactured by extruding a raw material whose main component is low-density polyethylene.

[Problem to be solved by the invention]

When using a rotating brush made by fixing a part of a long filament mainly made of low-density polyethylene to a rotating base as described above, the tip of the brush filament hits the surface to be cleaned with force, and During rubbing, a portion of the low-density polyethylene structure that makes up the filament breaks down and separates, rapidly wearing out and rendering it unusable within a short period of time.

The present invention aims to provide a monofilament for a brush that eliminates or minimizes the breakage and detachment of fine fibrous structures during cleaning, an efficient manufacturing method thereof, and a rotating brush using the same. This is the purpose.

[Means to solve the problem]

To achieve the above object, the monofilament for brushes of the present invention integrates a long multifilament made of highly crystalline polyolefin or a long stretched tape and the same kind of powdered high crystalline polyolefin having a slightly lower molecular weight. By stretching and stretching, the polymer chains are oriented in the fiber axis direction, and the fineness is approximately 1,000 to 1,000.
It has a denier of 9000 and an elastic modulus of 0.1 to 10 gigapascals.

In addition, the manufacturing method of the present invention involves feeding a long multifilament made of highly crystalline polyolefin or a long stretched tape onto the surface of the long multifilament.

Powdered highly crystalline polyolefin of the same type with a slightly lower molecular weight is fed at a constant rate and drawn through a heated nozzle to orient the polymer chains in the fiber axis direction and form fine fibers. It is characterized by a seemingly integrated structure.

Furthermore, the car wash brush of the present invention comprises two bundles of the monofilament fibrillated over an appropriate length at both ends.
It is made by folding it in half and inserting the folded part into a holding hole provided in a cylindrical body and fixing it there.

[For production]

In the monofilament of the present invention and the rotating brush using the same, the polymer chains are oriented in the direction of the fiber axis, so minute pieces of the polymer will not be detached and worn away by striking or rubbing.

According to the manufacturing method of the present invention, the polymer chains are automatically correctly oriented in the fiber axis direction.

〔Example〕

In carrying out the present invention, a long multifilament with high strength and high elastic modulus or a long stretched tape made of a high-crystalline polyolefin and a powdered high-crystalline polyolefin of the same type having a slightly lower molecular weight are used. , used as raw material.

Such a highly crystalline polyolefin is an isotactic polypropylene having a melt index in the range of 1.0 to 7.0, or an isotactic polypropylene having a melt index of 1.0 to 7.0.
0 to 7.0 and a density of 0.95 or more, preferably 0.96 or more.

Although the long multifilament or stretched tape material and the powdered highly crystalline polyolefin have different molecular weights, it is desirable that they have the same chemical structure.

After a pellet of highly crystalline polyolefin is extruded from a nozzle of an extruder (not shown), it is passed through a drawing tank and drawn to 5 to 23 times its initial length to form a long multifilament having the properties described above. A long stretched tape (hereinafter collectively referred to as stretched tape).

As shown in Fig. 1, this stretched tape (1) is pulled out from the feed reel (2), and is
After passing through a nozzle (4) and a cooling tank (5), it is wound up with a winding drum (6).

The feeder (3) is in the form of a hopper, with a band heater (7) in contact with the outer surface of its inverted conical bottom wall (3a), and a pouring tube (8) in the center of the bottom wall (3a). ) is hanging down.

A highly crystalline polyolefin powder (9) having the properties described above is placed in the feeder (3), and this powder falls at a constant rate from the spout tube (8).

A band heater (10) is wound around the nozzle (4). The cross-sectional shape of the nozzle (4) may be circular, elliptical, cross-shaped, star-shaped, etc., depending on the monofilament (11) to be obtained.
It is determined according to the shape of

Stretched tape (1) and highly crystalline polyolefin powder (
8) are both polyethylene, the band heater (7) preheats the powder (9) in the feeder (3) to 90 to 100°C, and the temperature of the passage part of the nozzle (4) is increased to 110°C. If the temperature is ~125℃.

A good product can be obtained.

If the image material is polypropylene, powder (9)
It is preferable to set the preheating temperature to 100 to 120°C, and the temperature of the passage portion of the nozzle (4) to 150 to 175°C.

In any case, the surface treatment agent is removed in advance, and the water content is kept below O,OS%.

The stretched tape (1) is passed through the nozzle (4
), the highly crystalline polyolefin powder (9) that has fallen onto the stretched tape (1) is integrated with the stretched tape (1) and subjected to drawing processing.

The monofilament (11) thus obtained is
The polymer chains are well oriented in the fiber axis direction, and the fine fibrous structure is apparently integrated, with a fineness of about 1000,9000 deniers and an elastic modulus of 0.1 to 10 gigapascals.

Next, the monofilament (1
The procedure for manufacturing a rotating brush using method 1) will be explained with reference to FIG.

A large number of monofilaments (11) are bundled and cut into a certain length using a cutting machine, and both ends of the bundle are pressed against a rotating body equipped with a cutter to fibrillate an area of about 10 nwn from the ends.

This bundle of monofilament (11) is folded in two, and the folded part (lla) is inserted into each of the holding holes (13) bored in the cylindrical body (12) made of vinyl chloride as a rotating base. The parts are connected to each other by a thread (14) on the inner surface of the cylindrical body (12), and the adhesive (1
Fix with 5).

The fibrillation treatment can also be performed by friction, kneading, brushing, hammering, or the like.

〔Effect of the invention〕

Even when a cleaning operation is performed using a rotating brush made of the monofilament according to the present invention, fine particles of polymer do not come off from the filament, and the brush can be used for a long time.

Further, the method according to the present invention consists of extremely simple steps, is easy to implement, and requires only a small equipment cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic longitudinal cross-sectional view for explaining the implementation procedure of the method of the present invention. FIG. 2 is a vertical sectional view schematically showing the rotating brush of the present invention. (1) Stretched tape (2) Delivery reel (3) Feeder (3a) Bottom wall (4) Nozzle (5) Cooling tank (6) Winding drum (7) Band heater (8) Dispensing tube (9) Height Crystalline polyolefin powder (1
0) Band heater (11) Monofilament (Il
a) Folded part (12) Cylindrical body (13) Holding hole
(14) Thread (15) Adhesive Figure 1 Figure 2

Claims (3)

[Claims] (1) By integrating a long multifilament made of highly crystalline polyolefin or a long stretched tape with powdered high crystalline polyolefin of the same type with a slightly lower molecular weight and stretching it, the polymer chain is The fibers are oriented in the axial direction and have a fineness of about 1000 to 90.
A monofilament for brushes having a denier of 0.00 denier and an elastic modulus of 0.1 to 10 gigapascals. (2) While feeding out a long multifilament or a long stretched tape made of highly crystalline polyolefin, a constant amount of powdered high crystalline polyolefin of the same type with a slightly lower molecular weight is supplied to the surface of the long multifilament or stretched tape. 1. A method for manufacturing a monofilament for a brush, which comprises drawing the monofilament by passing it through a heated nozzle to orient the polymer chains in the axial direction of the fibers and to apparently integrate the fine fibrous structure. (3) A bundle of the monofilament described in claim (1), which is fibrillated over an appropriate length at both ends, is folded in half, and the folded portion is inserted into a holding hole provided in a cylindrical body and fixed. A rotating brush.