CN213101174U

CN213101174U - Winding type PTFE base cloth

Info

Publication number: CN213101174U
Application number: CN202021477234.2U
Authority: CN
Inventors: 阙福明
Original assignee: Changzhou Huafu Environment Technology Co ltd
Current assignee: Changzhou Huafu Environment Technology Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-04
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a winding type PTFE base cloth, include and weave into the base cloth layer of grid form by warp direction base cloth fiber and latitudinal direction base cloth fiber longitude and latitude, the winding tow has twined on the base cloth layer, connects through twining the tow between two adjacent warp direction base cloth fibers, and same root twines tow and twines to connect two adjacent warp direction base cloth fibers respectively from the upper and lower alternate one by one from the both sides surface of latitudinal direction base cloth fiber to pass through, and twine the tow and connect warp direction base cloth fiber in order to run through and peg graft in warp direction base cloth fiber; the warp-wise base cloth fiber comprises a glass fiber bundle and two Kevlar core wires which are symmetrically arranged in the glass fiber bundle in a penetrating mode, and the winding fiber bundle is wound on the warp-wise base cloth fiber by being inserted between the two Kevlar core wires. The utility model has the advantages of reasonable design, twine the design in original fretwork department, also can effectively carry out the short knot with the base cloth in winding position when the acupuncture of being convenient for is napped, and short knot intensity is high, and production quality is good, and application scope is wide.

Description

Winding type PTFE base cloth

Technical Field

The utility model relates to a filter media membrane cloth production technical field especially relates to a winding type PTFE base cloth.

Background

Polytetrafluoroethylene (PTFE, abbreviated as PTFE) is a polymer obtained by polymerizing tetrafluoroethylene as a monomer. White wax, translucence, heat resistance and cold resistance, can be used for a long time at minus 180-260 ℃, has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, has extremely low friction coefficient of polytetrafluoroethylene, and has the characteristic of high temperature resistance. The base cloth made of PTFE can resist acid and alkali erosion in the whole PH value range at the continuous operation temperature of 240 ℃ and the temperature of instant 260 ℃, and is suitable for severe conditions needing corrosion resistance and occasions with high requirements on the service life of filter materials.

At present, after a latticed base fabric is generally made of fibers, a needle felt is made by coating or infiltrating PTFE and then napping through needle punching. The conventional PTFE base fabric is usually woven from fibers in a warp and weft manner. However, when the grid-shaped base cloth produced in the way is used for manufacturing a needled felt for a filter bag, grid parts of the common base cloth are hollowed out when needling and napping are carried out, and the condition that the base cloth is not attached to the hollowed-out positions exists when needling and napping are carried out, so that the short knot strength of the needled felt is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the not enough of prior art, the utility model provides a structural design is reasonable, twines the design in original fretwork department, also can effectively carry out the short knot with the base cloth in the winding position when the acupuncture of being convenient for draws hair, and short knot intensity is high, the winding type PTFE base cloth that production quality is good.

The utility model provides a technical scheme that its technical problem adopted is: a winding type PTFE base cloth comprises a base cloth layer which is formed by warp and weft base cloth fibers and is woven into a grid, winding fiber bundles are wound on the base cloth layer, two adjacent warp base cloth fibers are connected through the winding fiber bundles, the same winding fiber bundle respectively passes through the surfaces of the two sides of the weft base cloth fibers one by one alternately from top to bottom when the winding fiber bundles are wound and connected with the two adjacent warp base cloth fibers, and the winding fiber bundles are inserted into the warp base cloth fibers in a penetrating manner when the winding fiber bundles are connected with the warp base cloth fibers; the warp-wise base cloth fiber comprises a glass fiber bundle and two Kevlar core wires which are symmetrically arranged in the glass fiber bundle in a penetrating mode, and the winding fiber bundle is wound on the warp-wise base cloth fiber by being inserted between the two Kevlar core wires.

In the scheme, the winding fiber bundles are designed in a winding mode on the basis of the original grid-shaped base cloth layer, after the winding fiber bundles are wound, the winding fiber bundles are wound in each grid, and meanwhile, the adjacent two warp-shaped base cloth fibers are also wound and limited by the winding fiber bundles, so that the mechanical property of the base cloth is effectively enhanced, meanwhile, the short knots are convenient to short in the subsequent needling napping, and the product strength is favorably improved.

Preferably, the weft base cloth fibers comprise glass fiber bundles and Kevlar core wires penetrating through the centers of the glass fiber bundles, and the weft base cloth fibers are wrapped with PTFE layers in a soaking mode.

Preferably, the winding fiber bundle comprises a Kevlar core wire and a PTFE coating layer infiltrated on the outer surface of the Kevlar core wire.

The beneficial effects of the utility model are that, the utility model provides a winding type PTFE base cloth, structural design is reasonable, twines the design in original fretwork department, also can effectively carry out the short knot with the base cloth in the winding position when the acupuncture of being convenient for is napped, and short knot intensity is high, and production quality is good, and application scope is wide.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention.

Figure 2 is a schematic cross-sectional view of warp-wise base fabric fibers in a preferred embodiment of the invention.

Fig. 3 is a schematic cross-sectional view of weft base fabric fibers in a preferred embodiment of the invention.

Fig. 4 is a schematic cross-sectional view of a wound fiber bundle in a preferred embodiment of the present invention.

In the figure, 1, warp direction base cloth fiber 2, winding fiber bundle 3, weft direction base cloth fiber 4, Kevlar core wire 5, glass fiber bundle 6, PTFE layer 7 and PTFE coating.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

A winding type PTFE base fabric as shown in FIG. 1 is a preferred embodiment of the present invention, which comprises a base fabric layer woven into a lattice shape by warp direction base fabric fibers 1 and weft direction base fabric fibers 3. The base cloth layer is wound with winding fiber bundles 2, two adjacent warp-wise base cloth fibers 1 are connected through the winding fiber bundles 2, the same winding fiber bundle 2 respectively passes through the surfaces of the two sides of the weft-wise base cloth fibers 3 one by one in an up-down alternating mode when the two adjacent warp-wise base cloth fibers 1 are wound and connected, and the winding fiber bundles 2 are inserted into the warp-wise base cloth fibers 1 in a penetrating mode when the warp-wise base cloth fibers 1 are connected.

As shown in fig. 2, the warp base fabric fiber 1 includes a glass fiber bundle 5 and two kevlar core wires 4 symmetrically disposed in the glass fiber bundle 5, and the winding fiber bundle 2 is wound on the warp base fabric fiber 1 by being inserted between the two kevlar core wires 4.

As shown in fig. 3, the weft base fabric fibers 3 include glass fiber bundles 5 and kevlar core wires 4 penetrating the centers of the glass fiber bundles 5, and the outer portions of the weft base fabric fibers 3 are impregnated with PTFE layers 6. In actual design, in order to ensure the smoothness of warp and weft knitting, the overall outer diameters of the warp base fabric fibers 1 and the weft base fabric fibers 3 may be kept substantially the same, and the diameter of the kevlar core wires 4 in the weft base fabric fibers 3 may be designed to be 2 times that of the kevlar core wires 4 in the warp base fabric fibers 1.

As shown in FIG. 4, the winding fiber bundle 2 comprises a Kevlar core wire 4 and a PTFE coating 7 infiltrated on the outer surface of the Kevlar core wire 4.

The winding type PTFE base cloth designed in this way is reasonable in structural design, on the basis of an original grid-shaped base cloth layer, winding fiber bundles 2 are designed and wound at original hollowed-out positions, after the winding fiber bundles 2 are wound, the winding fiber bundles 2 are wound in each grid, and meanwhile, two adjacent warp-direction base cloth fibers 1 are also wound and limited by the winding fiber bundles 2, so that the mechanical performance of the base cloth is effectively enhanced, meanwhile, the winding position can also effectively perform short knot with the base cloth in subsequent needling napping, the short knot strength is high, the improvement of the product strength is facilitated, the production quality is good during needling napping, and the application range is wide.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A winding type PTFE base cloth which is characterized in that: the warp-weft base cloth is characterized by comprising a latticed base cloth layer woven by warp-wise base cloth fibers (1) and weft-wise base cloth fibers (3) in a warp-wise manner, winding fiber bundles (2) are wound on the base cloth layer, every two adjacent warp-wise base cloth fibers (1) are connected through the winding fiber bundles (2), the same winding fiber bundle (2) respectively passes through the surfaces of the two sides of the weft-wise base cloth fibers (3) alternately from top to bottom when the winding fiber bundles are wound and connected with the two adjacent warp-wise base cloth fibers (1), and the winding fiber bundles (2) are inserted into the warp-wise base cloth fibers (1) in a penetrating manner when the warp-wise base cloth fibers (1) are connected; the warp-wise base cloth fiber (1) comprises a glass fiber bundle (5) and two Kevlar core wires (4) which are symmetrically arranged in the glass fiber bundle (5) in a penetrating mode, and the winding fiber bundle (2) is wound on the warp-wise base cloth fiber (1) between the two Kevlar core wires (4) in an inserting mode.

2. The wound PTFE substrate of claim 1, wherein: the weft base fabric fibers (3) comprise glass fiber bundles (5) and Kevlar core wires (4) penetrating through the centers of the glass fiber bundles (5), and PTFE layers (6) are soaked and wrapped outside the weft base fabric fibers (3).

3. The wound PTFE substrate of claim 1, wherein: the winding fiber bundle (2) comprises a Kevlar core wire (4) and a PTFE coating (7) soaked on the outer surface of the Kevlar core wire (4).