Title:
FILTER MEDIA FOR AIR FILTER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3874038
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a filter media for air filter low in pressure loss and high in collecting efficiency by sticking a binder latex and a fluorine based surfactant having a min. surface tension equal to or below a specific value to a glass fiber constituting the filter media to minimize the generation of a web-like film of a binder.
SOLUTION: This filter media for air filter used for filtering impurities in a gas in an air filter for building air conditioner is formed by sticking the binder and the fluorine based surfactant having ≤20dyne/cm min. surface tension when adding to 25°C pure water to the glass fiber constituting the filter media. At this time, the filter media is constituted of ≥2 kinds of extra fine glass fibers respectively having ≤0.55μm average diameter and ≥1.0μm average diameter in the glass fiber constituting the filter media. The fluorine based surfactant is the one containing a hydrophobic group and a hydrophilic group of a fluoroalkyl group in the molecule and, for example, a perfluoroalkyl carboxylate, a perfluoroalkyl betaine and the like are cited.
Inventors:
Tomohiko Soyama
Application Number:
JP33306996A
Publication Date:
January 31, 2007
Filing Date:
November 29, 1996
Export Citation:
Assignee:
Hokuetsu Paper Mills Co., Ltd.
International Classes:
B01D39/00; B01D39/06; B01D46/10; (IPC1-7): B01D39/06; B01D39/00
Domestic Patent References:
| JP62090395A | ||||
| JP7185235A | ||||
| JP62004418A | ||||
| JP2041499A | ||||
| JP2175997A | ||||
| JP63119806A | ||||
| JP3505850A | ||||
| JP61201078A | ||||
| JP6094715A | ||||
| JP60019016A | ||||
| JP62064834A | ||||
| JP42005244B2 |
Attorney, Agent or Firm:
Masaru Koda