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Welding method for belt with polytetrafluoroethylene coating

A polytetrafluoroethylene and coating technology, applied in belts, household components, applications, etc., can solve the problems of belt joint damage, belt joint imprinting, expensive teflon-coated belts, etc. The effect of improving the service life

Pending Publication Date: 2017-11-17
JIANGSU QIYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PTFE-coated belts are expensive. In order to control costs, the service life of belts is the focus of the industry. However, PTFE-coated belts are usually damaged from the weakest position - the belt joint.
The development of an excellent belt joint method not only needs to solve the problem of belt joint marks, but also must meet a good service life, and this problem has also brought great challenges to the industry

Method used

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  • Welding method for belt with polytetrafluoroethylene coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Spread the PTFE fiberglass cloth on the platform. Spread the ETFE welding film with a width of 60mm and a thickness of 0.1mm, and a polytetrafluoroethylene-coated aramid welding base cloth with a width of 60mm and a thickness of 0.14mm on the lap seam of the belt in sequence, and align them in the middle. Turn on the high-temperature iron, set the temperature to 350°C, press it on the welding film after the temperature reaches the set value, keep it for 50s, remove the iron, press the stainless steel iron box with cold water on the welding position to cool down for 60s, and the welding is completed.

Embodiment 2

[0016] Lay the Teflon-coated fiberglass belt flat on the platform. Spread the FEP welding film with a width of 60mm and a thickness of 0.1mm, and a polytetrafluoroethylene-coated aramid welding base cloth with a width of 60mm and a thickness of 0.14mm on the lap seam of the belt in sequence, aligning in the middle. Turn on the high-temperature iron, set the temperature to 350°C, press it on the welding film after the temperature reaches the set value, keep it for 50s, remove the iron, press the stainless steel iron box with cold water on the welding position to cool down for 60s, and the welding is completed.

Embodiment 3

[0018] Spread the PTFE fiberglass cloth on the platform. Spread the PFA welding film with a width of 60 mm and a thickness of 0.1 mm, and a polytetrafluoroethylene-coated aramid welding base cloth with a width of 60 mm and a thickness of 0.14 mm on the lap seam of the belt in sequence, aligning in the middle. Turn on the high-temperature iron, set the temperature to 350°C, press it on the welding film after the temperature reaches the set value, keep it for 50s, remove the iron, press the stainless steel iron box with cold water on the welding position to cool down for 70s, and the welding is completed.

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Abstract

A welding technique for a belt with a polytetrafluoroethylene coating is characterized by comprising the steps that the belt with the polytetrafluoroethylene coating is flat spread on a platform, and the two ends of the belt are in butt joint; and a welding film and high-strength fiber base cloth are sequentially flat spread on a lap seam of the belt with the middle portions being aligned, a high-temperature iron is turned on and set to the temperature of 350-400 DEG C, the iron is pressed on the welding base cloth, maintained on the base cloth for 30-50 s and then moved away, a stainless steel iron box containing cold water is pressed on the welding position for cooling for 60-90 s and then moved away, and the welding base cloth and the belt are welded together. By adoption of the welding technique for the belt with the polytetrafluoroethylene coating, a belt mark caused by a joint is relieved obviously, and the service life is prolonged obviously.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a welding method for a polytetrafluoroethylene coated belt. Background technique [0002] Polytetrafluoroethylene (PTFE), also known as Teflon or Teflon (Teflon), compared with other polymer materials, because of its excellent heat resistance, flame retardancy, corrosion resistance and ultra-low coefficient of friction, the industrial The conveyor belt is often made of glass fiber and aramid fiber woven cloth, coated with polytetrafluoroethylene, and used for special functions. This kind of conveyor belt has the functions of wear resistance, high temperature resistance, corrosion resistance and easy cleaning, and the long-term use temperature can reach 260°C. [0003] The belt itself is divided into two types according to whether there is a seam, one is a seamless belt, and the other is an ordinary belt. The seamless belt is an endless belt of a specific s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/02B29L29/00
CPCB29C65/02B29C66/0342B29C66/4722B29L2031/7092B29C66/71B29C66/1142B29C65/5042B29C66/919B29C66/949B29C66/855B29C65/18B29C66/721B29C66/7212B29C65/5021B29K2027/18B29K2309/08B29K2277/10
Inventor 朱华平沃晓剑史玉龙
Owner JIANGSU QIYI TECH