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GB1052550A - - Google Patents

Info

Publication number
GB1052550A
GB1052550A GB1052550DA GB1052550A GB 1052550 A GB1052550 A GB 1052550A GB 1052550D A GB1052550D A GB 1052550DA GB 1052550 A GB1052550 A GB 1052550A
Authority
GB
United Kingdom
Prior art keywords
film
polypropylene
die
nip rolls
rolls
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
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.)
Publication date
Publication of GB1052550A publication Critical patent/GB1052550A/en
Priority claimed from US374634A external-priority patent/US3382306A/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
    • B29C55/023—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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
    • C08K5/27—Compounds containing a nitrogen atom bound to two other nitrogen atoms, e.g. diazoamino-compounds
    • 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
    • B29C48/03—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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1,052,550. Stereoregular polypropylene film. HERCULES POWDER CO. June 2, 1965 [June 12, 1964], No. 23476/65. Heading B5B. [Also in Division C3] An elastic polypropylene film is formed by extruding polypropylene at 220‹-290‹ C. into a film, subjecting the film to a melt draw down of # 24: 1, quenching the film at 80‹-110‹C. within #-“ inch from the extrusion die, and heat-treating the film at 130‹-150‹ C. in the relaxed state. The films are of stereoregular polypropylene, capable of at least 80% recovery from an elongation of 75% in the machine direction. The polymer may contain an azido cross-linking agent, e.g. a sulphonazide or azidoformate, there being e.g. 0À1-0À8 moles agent per mole polypropylene. In the Figure (not shown), film extruded from die 3 is quenched by inert liquid 5, e.g. H 2 O, at 80‹- 110‹ C. The film is drawn through the liquid by nip rolls 7 and 8 positively driven at 24-80 times the linear rate of extrusion of film 14 through die 3, thus stretching the film at the molten portion immediately following die 3. From nip rolls 7 and 8 the film passes into a heattreatment oven 9 wherein the film is maintained free of tension at below its softening point. The film passes round idler rolls 10 in the oven, and leaves the oven via nip rolls 11 and 12 driven at the same rate as the inlet nip rolls 7 and 8, and is then wound into rolls.
GB1052550D 1964-06-12 Expired GB1052550A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US374634A US3382306A (en) 1964-06-12 1964-06-12 Process of forming elastic polypropylene film
US87651169A 1969-11-13 1969-11-13
US8471270A 1970-10-28 1970-10-28

Publications (1)

Publication Number Publication Date
GB1052550A true GB1052550A (en) 1900-01-01

Family

ID=27374832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1052550D Expired GB1052550A (en) 1964-06-12

Country Status (1)

Country Link
GB (1) GB1052550A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997036732A1 (en) * 1996-04-01 1997-10-09 Minnesota Mining And Manufacturing Company Extruding thin multiphase polymer films
US5720914A (en) * 1991-12-20 1998-02-24 Scott & Fyfe Limited Method of producing a polyolefinic film by a water quench process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5720914A (en) * 1991-12-20 1998-02-24 Scott & Fyfe Limited Method of producing a polyolefinic film by a water quench process
WO1997036732A1 (en) * 1996-04-01 1997-10-09 Minnesota Mining And Manufacturing Company Extruding thin multiphase polymer films
US5779962A (en) * 1996-04-01 1998-07-14 Minnesota Mining And Manufacturing Company Extruding thin multiphase polymer films
CN1069571C (en) * 1996-04-01 2001-08-15 美国3M公司 Extruding thin multiphase polymer film

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