KR20200003340A - Manufacturing method of hollow fiber reinforcement using spiral circle fabric - Google Patents

Abstract

The present invention relates to a method for manufacturing a spiral circle fabric which has excellent internal and external pressure and high tensile force by manufacturing a solid reinforcing material woven by a spiral tubular fabric of a hollow fiber membrane, and allows water to flow in a vortex shape by a spiral tissue having excellent roundness, and causes zero fuzz and whiskering. According to the present invention, a reinforcing support body in which wefts (1) and warps (2) are woven by filament yarns or monofilament yarns and special yarns is included. A method for manufacturing a new fabric improves roundness to allow the coating thickness to be constant and thus to provide a new function of a reinforcing material which maintains the pore size of a membrane by changing the angle of a screw thread or changing the thickness and type of a thread (monofilament and special yarns). According to the present invention, a spiral circle fabric reinforcing material produced in a circular loom has excellent internal and external water pressure and high tensile force by using a solid support body which is woven, improves flexibility of a hollow fiber membrane by using mono-filament, and enhances binding force with a coating layer by increasing unevenness of the support body for reinforcement. In addition, a separation filtration layer, which is a coating layer, can be prevented from being detached by reforming the support body for reinforcement on the surface, and pores inside a film can be controlled by treating an internal coagulation solution, thereby obtaining excellent water permeability and increasing stability of pores.

Description

Manufacturing method of hollow fiber reinforcement using spiral circle fabric}

The present invention has a good internal and external pressure and high tensile force by manufacturing a solid reinforcement woven from a spiral circle fabric of the hollow fiber membrane, and the water flows in a vortex due to the spiral structure with excellent roundness and fluff ) And a method of manufacturing a spiral tubular fabric reinforcement with zero whiskering.

Until now, braid braided materials have been mainly used as reinforcing materials for hollow fiber membranes. The film has a dimensional stability of the coating layer after coating, but it is very difficult for the active layer coating film to have dimensional stability due to the high temperature of the organic solvent and high pressure. In addition, conventional polymer fiber braid reinforced hollow fiber membranes change not only the active layer membrane but also the dimensions of the braid reinforcement itself under high temperature organic solvent liquid. As such, if the dimensional stability is lost, there is a problem that a significant stress is generated at the interface between the braid and the active layer causing damage to the active layer film. Braided braided reinforcement causes deterioration of membrane properties such as whiskering and leakage caused by uneven coating due to fuzz. The braid has a short length of reinforcement products, resulting in high defect rate and low productivity when coating polymers.

The present invention is to solve the problems of the prior art, when manufacturing the reinforcement by using a spiral circle fabric (spiral circle fabric) reinforcement woven with a circular loom with filament or mono (mono) and special yarns The purpose is to stabilize the pore size of the membrane by increasing the uniformity of the thickness of the coating and minimizing elongation.

The reason for inventing is to solve the above problems with new ideas.

Braid braided tissue is tissue with many dimensional deformations or tissues woven with a spiral circle loom, which is the largest textile tissue whose dimensions are stabilized.

The reinforcing material of the hollow fiber membrane is a spiral circle fabric (spiral circle fabric) woven with a circular loom, characterized in that the weft yarn (1) and the warp yarn (2) comprises a reinforcing supporter woven from filament yarn or mono yarn and special yarn.

The angle of the thread can be changed by making two or more of the number of the shafts (a, b) of the weft yarn (1), and the thickness and type of the thread (mono-filament) of two or more threads of the weft yarn (1) And the special yarn), the roundness is increased, so that the thickness of the coating becomes constant, thereby maintaining the pore size of the membrane, thereby imparting the function of the new reinforcement.

Spiral tissue can increase the water transmission rate by rotating the water (vortex), and prevents foreign matter from adhering to the inside of the tube and causes the attached foreign matter to fall off.

The inclination (2) can control the water permeability according to the thickness and quantity of the yarn, and the pore size of the membrane is stabilized because the elongation of the texture and direction is very small.

Spiral circle fabric reinforcement produced in circular looms is different from conventional production methods. The production capacity is four times more than before and can be further increased by improvement. In addition, the weft yarn (1) without the post-treatment, the roundness of the tube is high, the tissue is maintained even at high external pressure and the centrifugal recovery power is high.

In addition, because the fabric structure has low elongation and high tensile strength, there is no deformation of the pore size of the coated membrane, and there is no mechanical fuzz and whiskering. Uniformity and productivity are very high.

As described above, the spiral circle fabric reinforcement of the hollow fiber membrane of the present invention has excellent internal and external hydraulic pressure and high tensile strength by using a woven rigid support, and the flexibility of the hollow fiber membrane is improved by using mono-filament. The unevenness of the reinforcing support member is increased to strengthen the binding force with the coating layer.

In addition, by modifying the surface of the reinforcing support to prevent desorption of the separation filtration layer of the coating layer, by treating the internal coagulation solution can be adjusted the pore of the membrane can be expected excellent water permeability and high porosity stability.

1 is a view of a spiral circle fabric.
2 is a cutaway view of a spiral circle fabric.
3 is a schematic diagram of a spiral circle fabric.
4 is a photograph of the surface of a spiral circle fabric.
5 is a photograph of the reinforcement made of spiral circle fabric (spiral circle fabric).

In a circular loom, when warp (2,3) arranged radially intersect to form an shed, a weft (1) shuttle (a, b) enters the opening. Rotating and weaving at the same time while being rotated and is repeated in succession to produce the form of the pipe (A) of the reinforcement.

Spiral lead angles are given according to the number of shafts (a, b) of the weft yarn (1), and the water transmittance can be adjusted by adjusting the warp (2,3) quantity.

Claims (5)

Hollow fiber membrane reinforcement is a spiral circle fabric type hollow fiber membrane reinforcement woven into a circular loom. Hollow fiber membrane reinforcement which made weft 1 (a) and (b) two or more shackles. Weft 1 and warp 2 are hollow fiber membrane reinforcements made of synthetic fiber, mono-filament, metal yarn and special yarn. A hollow fiber membrane reinforcement using at least two weft yarns (a) and (b) with at least two shafts and a different weft yarn thickness from at least (a) (b). A hollow fiber membrane reinforcing material which prevents desorption of a separation filtration layer which is a coating layer by modifying (ionizing) a reinforcing supporter on the surface.

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