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1. CN1245446 - Filter medium and air filter unit using same

Office Chine
Numéro de la demande 97181667.0
Date de la demande 01.12.1997
Numéro de publication 1245446
Date de publication 23.02.2000
Numéro de délivrance 1140326
Date de délivrance 03.03.2004
Type de publication C
CIB
B01D 69/08
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
69Membranes semi-perméables destinées aux procédés ou aux appareils de séparation, caractérisées par leur forme, leur structure ou leurs propriétés; Procédés spécialement adaptés à leur fabrication
08Membranes à fibres creuses
B01D 71/36
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
71Membranes semi-perméables destinées aux procédés ou aux appareils de séparation, caractérisées par leurs matériaux; Procédés spécialement adaptés à leur fabrication
06Matériaux organiques
30Polyhalogénures alcènyliques
32contenant des atomes de fluor
36Polytétrafluoro-éthylène
CPC
B29C 55/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
06parallel with the direction of feed
B01D 67/0027
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
0002Organic membrane formation
0023by inducing porosity into non porous precursor membranes
0025by mechanical treatment, e.g. pore-stretching
0027by stretching
B01D 69/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
B01D 71/36
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
30Polyalkenyl halides
32containing fluorine atoms
36Polytetrafluoroethene
B01D 2323/08
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2323Details relating to membrane preparation
08Specific temperatures applied
Déposants Daikin Industries, Ltd.
大金工业株式会社
Inventeurs Tanaka Osamu
田中修
Kusumi Toshio
楠见智男
Shibuya Yoshiyuki
涉谷吉之
田野猛
Mandataires tai gong
中国专利代理(香港)有限公司
中国专利代理(香港)有限公司
Données relatives à la priorité 324366/1996 04.12.1996 JP
Titre
(EN) Filter medium and air filter unit using same
(ZH) 过滤器滤材及使用它的空气过滤装置
Abrégé
(EN)
A filter medium which has an average pore diameter of more than 0.5 mu m, a pressure loss of 2-50 mmH2O determined when air is permeated therethrough at a velocity of flow of 5.3 cm/sec, and a PF value of 18-12, which is calculated in accordance with the following equation on the basis of this pressure loss and a collection efficiency using DOP of a grain size of 0.10-0.12 mu m. Permeability (%) = 100 - collection efficiency (%).

(ZH)

提供一种平均孔径超过0.5μm,以5.3cm/秒的流速使空气透过时的压力损失为2~50mmH2O,且由上述压力损失及使用0.10~0.12μm的粒径的DOP的捕集效率,通过下述公式所计算的PF值在18~22范围的过滤器滤材。

透过率(%)=100-捕集效率(%)。