METHOD FOR MANUFACTURING AIR FILTER MEDIUM

• Main Authors: YAMAMOTO SEIGO, INUI KUNIHIKO, YOSHIOKA YUKINA
• Format: Patent
• Language: English; Japanese
• Published: 08.10.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To provide a method for manufacturing an air filter medium which can improve homogeneity of a pressure loss.SOLUTION: A method for manufacturing an air filter medium having a porous film of a fluorine resin includes a step of increasing a stretch length speed (m/min) in a predetermined stretch direc...