PTFE filter felt production process based on decrement method
A PTFE, production process technology, applied in the field of PTFE filter felt production process based on the reduction method, can solve the problems of poor filtering effect of PTFE filter felt, and achieve the effects of avoiding difficult carding, shortening the process flow, and increasing production speed
Active Publication Date: 2022-03-01
上海澜森过滤材料科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a kind of PTFE filter felt production technology based on weight loss method, to solve the problem that PTFE filter felt filtering effect is poor
Method used
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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them.
[0040] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0041] Such as Figure 1-2 Shown, a kind of PTFE filter felt producti...
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Abstract
The invention relates to a PTFE (Polytetrafluoroethylene) filter felt and a production process thereof, and the production process comprises the following steps: selecting PTFE short fibers and PVA (Polyvinyl Acetate) short fibers, and uniformly mixing the PTFE short fibers and the PVA short fibers in proportion; a double-laying double-carding non-woven needled filter felt production line is adopted, and the mixed fibers are opened and carded into a net; pTFE filament base cloth is laid in advance, and cross lapping is conducted on the upper surface and the lower surface of the PTFE filament base cloth; after the lapping is completed, feeding into a pre-needling machine to carry out combined needling and preliminary needling reinforcement; removing PVA short fibers from the pre-needled felt by using a decrement method; the felt with the PVA short fibers removed is subjected to repeated needling, and a plain felt is formed; carrying out heat setting and singeing treatment on the plain felt; and carrying out calendering treatment. The process flow can be shortened, the production speed is increased, the productivity is improved, the production cost is reduced, and the filtering effect of the filter felt is ensured.
Description
technical field [0001] The invention belongs to the technical field of filter felts, and in particular relates to a production process of PTFE filter felts based on a weight reduction method. Background technique [0002] With the increasing growth of China's economy, waste water, waste residue, waste gas and other wastes produced by craft production have caused serious pollution to the environment, and it is urgent to strengthen environmental protection. In response to the increasing industrial and domestic waste, China has vigorously developed and built waste incineration power plants. Due to the complex composition of industrial and domestic waste, a large amount of waste gas and harmful waste residues will be produced after incineration, which must be filtered through needle felt filter bags to meet environmental protection emission requirements. The gas produced by garbage incineration contains a large amount of highly corrosive, strong acid and alkali, high temperatur...
Claims
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Patent Timeline
Login to View More IPC IPC(8): D04H1/4318D04H1/4309D04H3/007D04H1/74D04H1/498D06C7/02D06C9/02D06M11/05D06M101/22D06M101/24
CPCD04H1/4318D04H1/4309D04H3/007D04H1/74D04H1/498D06C7/02D06C9/02D06M11/05D06M2101/22D06M2101/24
Inventor 杨泽林卢永红
Owner 上海澜森过滤材料科技有限公司