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Process for producing polytetrafluoroethylene yarn for enhancing fabrics

A polytetrafluoroethylene, production process technology, applied in textiles and papermaking, stretch spinning, fiber cutting, etc., can solve the problems of pulling feeling, rough surface, affecting hand feeling, etc., and achieve the effect of advanced technology

Active Publication Date: 2011-10-12
常州市兴诚高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of polyester suture is rough, when passing through the tissue or knotting, there will be a pulling feeling, which will affect the hand feeling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of production technology of polytetrafluoroethylene thread for reinforcing fabric, process steps are as follows:

[0015] a. Ingredients: Mix the polytetrafluoroethylene raw material and kerosene that have been resting for more than 24 hours in a ratio of 4:1 to 10:1 and stir them thoroughly. After passing through a sieve and resting for more than 12 hours, put them into an oven (instrument temperature 50-60°C )spare;

[0016] b. Pre-compression extrusion: put the raw materials in the oven into the pre-compression machine barrel, set the pre-compression frequency to 3.0-4.8Hz and the pressure to 5-10MPa, release the pressure and demould after 50 minutes; put the pre-compression blank into Enter the push extruder, set the extrusion temperature and frequency, and extrude into a rod;

[0017] c. Calendering: Store the extruded bar in a stainless steel bucket filled with water at 50-60°C for more than 10 minutes, then pass through the deflector and enter the calende...

Embodiment 2

[0022] A kind of production technology of polytetrafluoroethylene thread for reinforcing fabric, process steps are as follows:

[0023] a. Ingredients: Mix the polytetrafluoroethylene raw material and kerosene that have been resting for more than 24 hours in a ratio of 4:1 to 10:1 and stir them thoroughly. After passing through a sieve and resting for more than 12 hours, put them into an oven (instrument temperature 50-60°C )spare;

[0024] b. Pre-compression extrusion: put the raw materials in the oven into the pre-compression machine barrel, set the pre-compression frequency to 3.0-4.8Hz and the pressure to 5-10MPa, release the pressure and demould after 50 minutes; put the pre-compression blank into Enter the push extruder, set the extrusion temperature and frequency, and extrude into a rod;

[0025] c. Calendering: Store the extruded bar in a stainless steel bucket filled with water at 50-60°C for more than 10 minutes, then pass through the deflector and enter the calende...

Embodiment 3

[0030] A kind of production technology of polytetrafluoroethylene thread for reinforcing fabric, process steps are as follows:

[0031] a. Ingredients: Mix the polytetrafluoroethylene raw material and kerosene that have been resting for more than 24 hours in a ratio of 4:1 to 10:1 and stir them thoroughly. After passing through a sieve and resting for more than 12 hours, put them into an oven (instrument temperature 50-60°C )spare;

[0032] b. Pre-compression extrusion: put the raw materials in the oven into the pre-compression machine barrel, set the pre-compression frequency to 3.0-4.8Hz and the pressure to 5-10MPa, release the pressure and demould after 50 minutes; put the pre-compression blank into Enter the push extruder, set the extrusion temperature and frequency, and extrude into a rod;

[0033] c. Calendering: Store the extruded bar in a stainless steel bucket filled with water at 50-60°C for more than 10 minutes, then pass through the deflector and enter the calende...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention a process for producing polytetrafluoroethylene yarn for enhancing fabrics, which comprises the following steps of: standing a polytetrafluoroethylene raw material for over 24 hours, mixing the raw material with kerosene according to a ratio of 4:1-10:1, stirring fully, sieving and standing for over 12 hours, and putting the mixture into a drying oven for later use; feeding the raw material in the drying oven into a preformer feed pipe, demoulding under the released pressure after 50 minutes; feeding preformed blanks into a push extruder, setting the extrusion temperature and extrusion frequency, and extruding the bar-shaped blanks; storing the extruded bar stocks into a stainless steel barrel filling with water of 50 to 60 DEG C for over 10 minutes, allowing the bar stocks to pass through a guide plate and enter a calendar, so that the thickness of a calendered membrane is between 0.12 and 0.18 millimeter, and the width is between 125 and 145 millimeters, and winding the membrane an iron pipe of a wrap-up device; arranging a calendered raw material belt on a unreel machine of an oil-removing sintering stretching cart, regulating the temperature of oil removal, sintering and stretching and the rotate speed of a roller, winding the raw material belt on a plastic pipe of the wrap-up device, wrapping the stretched raw material belt on a yarn splitter, and adjusting the position of a cutter to wind divided monofilaments on the plastic pipe of the wrap-up device; arranging a monofilament plastic pipe on a despooling rack of a twisting cart, twisting, and winding the monofilaments on the plastic pipe through a scutching machine. The process is advanced, and can produce the polytetrafluoroethylene yarns which have the reliable performance and are used for enhancing the fabrics.

Description

technical field [0001] The invention relates to a production process of polytetrafluoroethylene threads for reinforcing fabrics. The polytetrafluoroethylene (PTFE) wire produced by this process is widely used in chemical, textile, medical, metallurgical and other industries. Background technique [0002] Ion exchange membrane is a polymer membrane with selective permeation ability for ions in solution, and it is the core component of electrolyzer in chlor-alkali industry. In industry, caustic soda (NaOH), chlorine (Cl2) and hydrogen (H2) are produced by electrolysis of saturated sodium chloride (NaCl) solution, and a series of chemical products are produced using them as raw materials, which is called the chlor-alkali industry. The chlor-alkali industry is one of the most basic chemical industries. Its products are not only used in the chemical industry itself, but also widely used in light industry, textile industry, metallurgical industry, petrochemical industry and publi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D02G3/28D02G3/44D01D5/12D01G1/00
Inventor 何正兴何越超
Owner 常州市兴诚高分子材料有限公司
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