Japan, Feb. 24 -- JAPAN VILENE CO LTD has got intellectual property rights for 'FILTER BASE MATERIAL.' Other related details are as follows:
Application Number: JP,2022-072000
Category (FI): D04H1/728,B01D39/00@Z,D04H1/4382
Stage: PROBLEM TO BE SOLVED: To provide a filter base material capable of providing an air filter and a mask where breathing is easy by having low pressure loss and excellent air permeability and the reduction of collection efficiency after washing is low even when being reused after washing.SOLUTION: In a filter base material with a fiber layer, a non-fibrous material where the constitution fibers of the fiber layer are bonded each other exists on one main surface of the fiber layer. The breaking and cracking of the fiber layer are prevented since specular gloss on one main surface of the fiber layer is larger than 8.8 even when the average fiber diameter of the fiber layer of the filter base material is 400 nm or less. An air filter and a mask having low collection efficiency after washing can be provided. The air filter and the mask where breathing is easy by low pressure loss and excellent air permeability since specular gloss on one main surface of the fiber layer is smaller than 46.6 can be provided.SELECTED DRAWING: None (Grant)
Filing Date: April 26, 2022
Publication Date: Nov. 8, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
