Dacron aculeus filtering felt surface coating process

Abstract

The invention provides a surface coating technique for a polyester fiber needling filter felt, comprising: step 1, formulating a surface coating liquid; step 2, penetrating a semi-finished product of the polyester fiber needling felt, which is subjected to singeing in impregnation technology, into a coating apparatus to then enter into a stenter shaping box at the temperature of 150 DEG C; pouring the well-formulated coating liquid into a coating rubber groove to the half height thereof; step 3, placing a Phi300 coating roller downwards inside the rubber groove with the area occupied being about one third of that of the rubber groove; step 4, regulating the spacing between a scraper and an rubber roller to 5mm; step 5, launching the coating apparatus while synchronously launching an oven at a speed of 3.5m/min; step 6, maintaining the coating liquid in the rubber groove at the same height in the whole coating process; step 7, subjecting the coating liquid to hot pressing technique after drying and curing in order to be cut into products. The invention has the advantages of resisting chemical erosion, high mechanical strength, resisting higher filtration load, smooth surface of the filter felt, easiness for dust removal, low resistance in operating dust removal apparatuses and high filter precision.

Description

technical field [0001] The invention provides a polyester fiber needle-punched filter felt surface coating process, which belongs to the technical field of plastics. Background technique [0002] At present, polyester fiber needle-punched filter felts are widely used for dust filtration in industrial production environments, but there are still deficiencies in the cleaning effect and chemical corrosion resistance. Contents of the invention [0003] In order to solve the foregoing problems, the invention provides a polyester fiber needle-punched filter felt surface coating process; the process is: [0004] Step 1, the polyester fiber semi-finished product produced is subjected to an impregnation process; [0005] In step 2, the polyester fiber semi-finished product that has been subjected to the dipping process is subjected to a surface coating process. [0006] Described dipping process is: [0007] Step 1, preparing chemical treatment agent; [0008] Step 2, impregnat...

AI Technical Summary

Problems solved by technology

[0002] At present, polyester fiber needle-punched filter felts are widely used for dust filtration in industrial p