GB1287505A - Microporous films and their production - Google Patents

Microporous films and their production

Info

Publication number
GB1287505A
GB1287505A GB54057/70A GB5405770A GB1287505A GB 1287505 A GB1287505 A GB 1287505A GB 54057/70 A GB54057/70 A GB 54057/70A GB 5405770 A GB5405770 A GB 5405770A GB 1287505 A GB1287505 A GB 1287505A
Authority
GB
United Kingdom
Prior art keywords
stretch
film
stretching
nov
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB54057/70A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Celanese Corp
Original Assignee
Celanese Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Celanese Corp filed Critical Celanese Corp
Publication of GB1287505A publication Critical patent/GB1287505A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
GB54057/70A 1969-11-13 1970-11-13 Microporous films and their production Expired GB1287505A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87651169A 1969-11-13 1969-11-13
US8471270A 1970-10-28 1970-10-28

Publications (1)

Publication Number Publication Date
GB1287505A true GB1287505A (en) 1972-08-31

Family

ID=26771333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54057/70A Expired GB1287505A (en) 1969-11-13 1970-11-13 Microporous films and their production

Country Status (8)

Country Link
BE (1) BE758823A (https=)
CA (1) CA925671A (https=)
CH (1) CH539496A (https=)
DE (1) DE2055193C2 (https=)
ES (1) ES385526A1 (https=)
FR (1) FR2067271B1 (https=)
GB (1) GB1287505A (https=)
IL (1) IL35643A (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843761A (en) * 1973-05-30 1974-10-22 Celanese Corp Process for preparing a thermoplastic microporous film involving a cold stretching step and multiple hot stretching steps
ZA80465B (en) * 1979-02-13 1981-08-26 Celanese Corp Process for preparing hollow microporous polypropylene fibers
US5677360A (en) * 1991-02-13 1997-10-14 Mitsubishi Rayon Co., Ltd. Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them
DE69225359T2 (de) * 1991-02-13 1998-10-08 Mitsubishi Rayon Co Verfahren zur herstellung von hydrophilen porösen fasern und membranen
WO2002103099A1 (en) 2001-06-19 2002-12-27 Kappler Safety Group Vapor permeable, liquid impermeable composite fabric and fabrication process

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB887346A (en) * 1959-09-09 1962-01-17 Ici Ltd Linear polyester films and processes for their production
US3426754A (en) * 1964-06-12 1969-02-11 Celanese Corp Breathable medical dressing
FR1544807A (fr) * 1967-09-27 1968-11-08 Celanese Corp Pellicule à cellules ouvertes

Also Published As

Publication number Publication date
DE2055193A1 (de) 1971-05-19
FR2067271B1 (https=) 1975-01-10
IL35643A0 (en) 1971-02-25
BE758823A (fr) 1971-05-12
CH539496A (fr) 1973-07-31
FR2067271A1 (https=) 1971-08-20
ES385526A1 (es) 1973-10-01
IL35643A (en) 1973-07-30
DE2055193C2 (de) 1985-09-12
CA925671A (en) 1973-05-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years