Production process of polyester bag-pasting-preventing needled felt

Abstract

The invention discloses a production process of a terylene bag-pasting-preventing needled felt, and aims to provide a production process which is used for coating a terylene needled felt, finishing and constructing a multi-component mixed structure, has a good bag-pasting-preventing effect, brings chopped fibers into the thickness direction of a filter material through a felting needle by virtue of a low-damage needling forming technology, and improves the bag-pasting-preventing performance of the terylene bag-pasting-preventing needled felt. According to the technical scheme, the production process is characterized in that the polyester needled felt is subjected to film covering after finishing and multi-component mixed structure construction, the water spraying grade is larger than the fourth grade, the oleophobic grade is larger than the third grade, the bag pasting prevention effect is good, and the production efficiency is improved. The chopped fibers are brought into the thickness direction of the filter material through a pricking needle through a low-damage needling forming technology, the interlayer strength of a fiber web is improved, and the method is suitable for the technical field of needled felt production processes.

Description

technical field [0001] The invention relates to the technical field of needle-punched felt production technology, more specifically, it relates to a production technology of polyester anti-sticking bag needle-punched felt. Background technique [0002] Polyester is the chemical fiber with the highest output, accounting for more than 80% of the output. Polyester fiber has a melting point of about 230°C and has good temperature resistance. Its instantaneous temperature can reach 120°C, and it has good wear resistance. It is the most widely used variety in felt materials. Most of the smoke and dust filtration conditions are acidic atmospheres, and polyester has good acid resistance, so it is widely used in the field of smoke and dust filtration. The present invention intends to form polyester into needle-punched felt through carding and needle-punching reinforcement processes, and through further chemical finishing, endow it with anti-sticking bags and other functions, and ex...

AI Technical Summary

Problems solved by technology

[0003] And in the production, we found that when the felt is needled, the needle is too rigid during the needle punching process, which will have a great impact on the felt, especially when the needle is punched with a thicker felt, the needle does not have The cushioning effect increases the loss of the felt during needle punching, and also causes vibration due to the high-frequency up and down movement of the needle plate driven by the eccentric link mechanism. This part of the force will act on the felt through the needles, or directly on the needles , When the vibration is large, it will cause broken needles and affect production and product quality

Images