Tel: 86-571-86058862-8008
China Nomex Filter Bags manufacturer
ZHEJIANG GRACE ENVIROTECH CO., LTD

Leading  Manufacturer of Industrial Filter Bags , Filter Cloth.

Home News

Company News

The engineering capability for dust collector system is very strong ,I am very satisfied with the quality and service of Hangzhou Grace.

—— David Owens

I have ordered the Nomex filter bag from Hangzhou Grace for 5 years ,I am always enjoy the good quality filter bag supplied by them.

—— Barbara Haselton

ECOGRACE provide with our company for effective solutions about filter media for the dust emission control for our coal fird boiler baghouse system !

—— Steve Brain

I'm Online Chat Now
Company News
The difference between waterproof treatment and impregnation treatment of filter bags in dust removal cloth bags?

The waterproof treatment of filter materials and PTFE immersion treatment have similarities and differences. The two use different chemical treatment agents to achieve different treatment effects through impregnation, rolling, high-temperature drying, and baking. The production processes of the two are basically the same.

  1. The difference lies in the fact that the effective ingredients of the treatment agent are different
    Fluorine based water repellent agents are generally used for waterproofing treatment. The water repellent component is a perfluoroalkyl acrylate copolymer, which can form a thin film with low surface tension on the fiber surface during high-temperature baking, making the surface tension of the fabric less than that of water and oil, thus achieving good water and oil repellent effects.
    The PTFE immersion treatment uses a suspension dispersion made of polytetrafluoroethylene powder, which solidifies on the surface of fibers and filter media during high-temperature baking.
    The weight change of the product after chemical treatment is different
    After waterproof treatment, the chemical active ingredients generally increase the weight of filter media by 0.8% -1.2%, while after PTFE immersion treatment, the chemical active ingredients generally increase the weight of filter media by 5% -10%.
    The surface state of filter media after chemical treatment is different
    After waterproof treatment, the surface structure of the filter material remained basically unchanged. After PTFE immersion treatment, there was obvious adhesion of the treatment agent on the surface of the filter material, which changed the original surface structure of the filter material, making the surface of the filter material smoother and the pores smaller.
  2. Differences in usage functions:
    The key to waterproofing treatment is to improve the waterproof performance of the filter material, which has an anti condensation effect during use. It can improve the surface cleaning effect to a certain extent. PTFE impregnation treatment has a certain waterproof performance, mainly to improve the corrosion resistance of the filter material. At the same time, due to the smoothness of the filter material surface and the reduction of pores, the filtration and ash cleaning performance of the filter material is improved to a certain extent.
    The ideal state of PTFE in filter media: PTFE is coated on the surface of glass fibers to form a complete membrane, but in reality, some PTFE accumulates in the gaps between the glass fibers, and local fibrosis occurs to achieve both good adhesion and good breathability.
Pub Time : 2023-12-11 11:04:52 >> News list
Contact Details
ZHEJIANG GRACE ENVIROTECH CO., LTD

Contact Person: Miss. Doreen Zou

Tel: 0086 135 8806 5995

Fax: 86-571-86073956

ZHEJIANG GRACE ENVIROTECH CO., LTD
No. 100 Sunjiali, Ling Jiawu Industrial Zone, Wenyan, Xiaoshan, Hangzhou,China
Tel: 86-571-86058862-8008
Mobile Site Privacy Policy |   News |   China Nomex Filter Bags Supplier. Copyright © 2016 - 2024 dustfilter-bag.com. All Rights Reserved.