GB1198695A - Film Production. - Google Patents

Film Production.

Info

Publication number
GB1198695A
GB1198695A GB36487/67A GB3648767A GB1198695A GB 1198695 A GB1198695 A GB 1198695A GB 36487/67 A GB36487/67 A GB 36487/67A GB 3648767 A GB3648767 A GB 3648767A GB 1198695 A GB1198695 A GB 1198695A
Authority
GB
United Kingdom
Prior art keywords
film
polymer
extrudate
aug
cooling
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
GB36487/67A
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 GB1198695A publication Critical patent/GB1198695A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,198,695. Annealed polymeric films. CELANESE CORP. 9 Aug., 1967 [15 Aug., 1966], No. 36487/67. Heading B5B. [Also in Division C3] A film of a polymer which is polyethylene, polypropylene, or an oxymethylene polymer and having an elastic recovery from 50% strain of at least 70% at 25‹ C. is obtained by a process comprising extruding in the form of a film a molten polymer at a melt temperature no higher than 100‹ C. above the crystalline melting point of the polymer, cooling the extrudate within two inches of the extrusion orifice, and stretching the solidifying extrudate at a high rate of draw-down and at a drawdown ratio of at least 20 : 1 and annealing the resulting stretched film at a temperature of 5 to 100‹ C. below the crystallinic melting- point of the polymer for a period of at least 5 seconds. The extrudate is cooled by contact with a cooling roll or a cooling air stream. The process may be carried out to produce a planer film or a tubular film by a "blown film technique". Diagrams of suitable apparatus for both variations of the process are included.
GB36487/67A 1966-08-15 1967-08-09 Film Production. Expired GB1198695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57260166A 1966-08-15 1966-08-15

Publications (1)

Publication Number Publication Date
GB1198695A true GB1198695A (en) 1970-07-15

Family

ID=24288567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36487/67A Expired GB1198695A (en) 1966-08-15 1967-08-09 Film Production.

Country Status (12)

Country Link
AT (1) AT302633B (en)
BE (1) BE702648A (en)
CH (1) CH498170A (en)
DE (1) DE1704542A1 (en)
ES (1) ES344104A1 (en)
FI (1) FI50216C (en)
GB (1) GB1198695A (en)
IL (1) IL28464A (en)
LU (1) LU54285A1 (en)
NL (1) NL6711178A (en)
NO (1) NO129670B (en)
SE (1) SE328693B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653379B1 (en) * 1971-04-15 1981-12-18
EP0285291A2 (en) * 1987-04-01 1988-10-05 Polyplastics Co. Ltd. Method of manufacturing polyacetal resin film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653379B1 (en) * 1971-04-15 1981-12-18
EP0285291A2 (en) * 1987-04-01 1988-10-05 Polyplastics Co. Ltd. Method of manufacturing polyacetal resin film
EP0285291A3 (en) * 1987-04-01 1990-09-12 Polyplastics Co. Ltd. Method of manufacturing polyacetal resin film

Also Published As

Publication number Publication date
FI50216C (en) 1976-01-12
NO129670B (en) 1974-05-13
FI50216B (en) 1975-09-30
SE328693B (en) 1970-09-21
IL28464A (en) 1971-04-28
DE1704542A1 (en) 1971-05-19
CH498170A (en) 1970-10-31
ES344104A1 (en) 1968-11-01
AT302633B (en) 1972-10-25
NL6711178A (en) 1968-02-16
LU54285A1 (en) 1967-11-23
BE702648A (en) 1968-02-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee