JPH01321965A - Production of steric net-like collected body - Google Patents

Abstract

PURPOSE:To provide a steric net-like collected product whose surface layer thereof is partially divided into fine fibers by treating many thermoplastic synthetic resin fibers spun out in the downward direction with a rotator, recipro cating lever, etc., before the fibers is solidified. CONSTITUTION:A water tank 5 having a slit opening on the lower surface thereof is disposed on the outer periphery of a downward-directed nozzles 1 and air-blowing nozzles 3 and a water flow 6 is dropped from the water tank along a guiding wall 7 to shield the outer periphery surface of the fiber 2 group. When the fibers 2 are taken out with taking rolls 8 and 8' at a rate slower than the spinning rate of the fibers and subsequently cooled to be solidified, a fiber 2 group still not solidified is treated with a fining device such as a rotator 11, reciprocating lever 12 or vibrating lever to partially fine the surface 13 of the steric net-like collected product 10.

Description

[Detailed description of the invention] [Industrial application field] The present invention is applicable to filter materials, cushion materials, underdrain/drainage materials,
This paper relates to a method for producing three-dimensional reticular aggregates used as interior springs and other materials.

[Conventional technology]

The inventor of the present application has developed a method in which a thermoplastic synthetic resin filament or a large number of filaments are spun out from a downward nozzle and allowed to fall naturally, and while these filaments are in a molten state, these filaments are While it is in a molten state, it is pulled at a lower speed than the above-mentioned descending speed to bend each molten filament so that it is point-adhered to each other into three-dimensional filaments, and then immediately cooled and solidified rapidly. A method for continuously producing a three-dimensional network of synthetic resin characterized by the following has been proposed (see Japanese Patent Publication No. 51-16530).

[Problem to be solved by the invention]

When using the manufacturing method described in the above-mentioned conventional technology, there is a limit to the narrowing of a part of the nozzle hole group of the nozzle used in the implementation, and there is a problem in that the surface layer can be made with a single piece of metal so that the fineness and density are arbitrary. Due to the force that cannot be changed in the type,
It was not possible to obtain a product in which a part of the surface layer of the three-dimensional network aggregate was made delicate.

The purpose of the present invention is to provide a novel method for producing a three-dimensional reticular aggregate, which can produce a product in which a part of the surface layer of the three-dimensional reticular aggregate is refined.

[Means to solve the problem]

In order to achieve the above object, the method for manufacturing the three-dimensional network aggregate of the present invention involves spinning a large number of thermoplastic synthetic resin filaments downward from a nozzle, and speeding up the spinning speed while these filaments have not yet solidified. When obtaining a three-dimensional net-like aggregate by bending it by means of drawing at a slow drawing speed, intersecting multiple filaments with the bending curve, fusing the intersection points, and cooling and solidifying, A part of the surface layer of the three-dimensional net-like aggregate is made fine by applying a finesizing device such as a rotating body, a reciprocating rod, or a vibrating rod to the filaments.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. A large number of downward nozzles (1) provided on the extruder die
The multi-thermoplastic synthetic resin filament (2) is spun, and the air jet nozzles (3), which can freely rotate and reciprocate, are installed in the required number between the downward nozzles (1) to adjust the temperature and temperature accordingly. Air (4) at an appropriate speed is passed through the nozzle (
1) A filament spun from a filament (
2) to make each filament (2) curve and twist; and a water tank (5) with a slit on the outer periphery of the air jet nozzle (3).
The water flow (6) is guided from the water tank (5) to the guide wall (7).
) to shield the outer peripheral surface of the group of filaments (2),
Furthermore, these lines (2) All take-up rolls (8) +81'
By drawing the threads at a slower speed than the spinning speed, the curved thread D't is made more complicated, and the threads (2) are introduced into the cooling water (9) to be rapidly cooled and solidified to form three-dimensional network aggregates. When obtaining , a three-dimensional reticular aggregate (a part of the surface layer of Q is made delicate by applying a rotating body I and a reciprocating rod (L1') to the group of filaments (2) that have not yet solidified. .

A different embodiment shown in FIG. 2 utilizes a rotating body I that reciprocates in the axial direction to accomplish the above-mentioned fineness.

The present invention may be carried out using a vibrating rod or the like as a decomposition device.

It is convenient to slide the rotating body (14) in the axial direction in a reciprocating direction because it helps to make the surface layer uniform both vertically and horizontally.

[For production]

Since the present invention is based on the above method, it is possible to obtain a three-dimensional net-like aggregate in which a portion of the surface layer is made finer by the action of a finerizing device such as a rotating body, a reciprocating rod, or a vibrating rod.

〔Effect of the invention〕

The present invention has an excellent effect of completely achieving the purpose of providing a novel manufacturing method for a three-dimensional reticular aggregate that can obtain a product in which a part of the surface layer of the three-dimensional reticular aggregate is refined. .

[Brief explanation of the drawing]

1 and 2 are manufacturing process diagrams showing different embodiments of the present invention. (1)...Downward nozzle, (2)...String, (3)
... Air jet nozzle, (4) ... Air, (5)
... Water tank, (6) ... Water flow, (7) ... Guide wall, 18) (at' ... Take-up roll, (9) ... Cooling water, elG ... Three-dimensional network aggregate , αυ...rotating body,
(1...Reciprocating rod, 餞...Delicate part, (2)...
·Rotating body. Patent Applicant: Morimura Kosan Co., Ltd.] (2)...Striated wire...Three-dimensional striated aggregate: 2 Figure α-fiberized part

Claims (1)

[Scope of Claims] A large number of thermoplastic synthetic resin filaments are spun downward from a nozzle, and while these filaments are not yet solidified, they are bent by means of being pulled out at a drawing speed slower than the spinning speed, and When obtaining a three-dimensional net-like aggregate by intersecting the filaments and fusing the intersection points through the bending and cooling and solidifying the filaments, rotating bodies, reciprocating rods, vibrating rods, etc. are attached to the filaments that have not yet solidified. 1. A method for producing a three-dimensional reticular aggregate, characterized in that a part of the surface layer of the three-dimensional reticulated aggregate is made finer by applying a deagglomeration device.