GB964627A - Producing biaxially oriented polypropylene film - Google Patents

Producing biaxially oriented polypropylene film

Info

Publication number
GB964627A
GB964627A GB36785/62A GB3678562A GB964627A GB 964627 A GB964627 A GB 964627A GB 36785/62 A GB36785/62 A GB 36785/62A GB 3678562 A GB3678562 A GB 3678562A GB 964627 A GB964627 A GB 964627A
Authority
GB
United Kingdom
Prior art keywords
film
biaxially oriented
bath
web
liquid
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
GB36785/62A
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.)
Millennium Petrochemicals Inc
Original Assignee
National Destillers and Chemical 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
Priority claimed from US155446A external-priority patent/US3223764A/en
Application filed by National Destillers and Chemical Corp filed Critical National Destillers and Chemical Corp
Publication of GB964627A publication Critical patent/GB964627A/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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • 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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

964,627. Biaxially oriented polypropylene film. NATIONAL DISTILLERS & CHEMICAL CORPORATION. Sept. 27, 1962 [Nov. 28, 1961], No. 36785/62. Heading B5B. Polypropylene film suitable for biaxial orientation is produced by melt extruding polypropylene containing more than 70% by weight of isotactic polypropylene at an elevated temperature of, for example, about 350‹ to 550‹ F. and at a draw down ratio of at least 7:1 to form a flat film web, having a high degree of melt orientation, rapidly cooling the extruded web contacting it with cooling means, for example, by passing it through a bath of cooling liquid (preferably water) or on to the surface of a chill roll, the surface of the bath liquid or the upper surface of the chill roll being <SP>1</SP>/ 16 to 2 inches from the lips of the extrusion die. After being withdrawn from the quench bath and dried or withdrawn from the chill roll, the film may be longitudinally stretched, e.g. at about 200‹ to 300‹ F. to a stretch ratio of about 1.2: to 1.6:1, and may thereafter be heated while under longitudinal tension to about 250‹ to 300‹ F. The web may then be stretched transversely, e.g. at about 200‹ to 300‹ F., while it is under longitudinal tension, to obtain a stretch ratio of about 6 : 1 to 12 : 1. The thus biaxially oriented polypropylene film is finally cooled to about ambient temperature and collected. The film may be heated to a temperature of, e.g. 300‹ to 350‹ F., for a sufficient period of time, e.g. 3 to 10 seconds, to effect annealing, while it is maintained under longitudinal and transverse tension. The cooled biaxially oriented film may be further stretched longitudinally at about 200‹ to 300‹ F. and a stretch ratio of about 1.3: 1 to 3: 1 to obtain balanced biaxially oriented polypropylene film. The cooled biaxially oriented film may be trimmed to remove film edges which have not been transversely stretched and the trimmed edges may be recycled to the extruder. The web of film may issue from the extrusion die at a thickness of about 2 to 20 mils. which may be 8 to 12 times the final thickness of the film. When the film is quenched by passing it through a bath of liquid, e.g. water, at about 40‹ F., the surface of the liquid must be free from ripples and its surface may be maintained at a distance of # to 1 inch below the die lips.
GB36785/62A 1961-11-28 1962-09-27 Producing biaxially oriented polypropylene film Expired GB964627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US155446A US3223764A (en) 1961-11-28 1961-11-28 Process for production of biaxially oriented polypropylene film

Publications (1)

Publication Number Publication Date
GB964627A true GB964627A (en) 1964-07-22

Family

ID=22555464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36785/62A Expired GB964627A (en) 1961-11-28 1962-09-27 Producing biaxially oriented polypropylene film

Country Status (3)

Country Link
DE (1) DE1504608B2 (en)
GB (1) GB964627A (en)
LU (1) LU42712A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1901751A1 (en) * 1968-01-18 1969-11-27 Union Carbide Corp Packaging made of plastic film for extremely low temperatures
EP0027206A2 (en) * 1979-10-12 1981-04-22 Toray Industries, Inc. Capacitor
CN112300426A (en) * 2020-10-26 2021-02-02 广东安德力新材料有限公司 Preparation method of polypropylene film layer capable of eliminating stress residue
CN113561517A (en) * 2021-08-09 2021-10-29 山东胜通光学材料科技有限公司 High-definition thin brightening type polyester base film manufacturing process and equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651330A (en) * 1979-10-05 1981-05-08 Toray Ind Inc Polypropylene film
DE3144912A1 (en) * 1981-11-12 1983-05-19 Hoechst Ag, 65929 Frankfurt BIAXIAL STRETCHED POLYOLEFINIC PLASTIC FILM WITH AN ELASTICITY MODULE IN THE LENGTH DIRECTION OF MORE THAN 4000 N / MM (ARROW HIGH) 2 (ARROW HIGH)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1901751A1 (en) * 1968-01-18 1969-11-27 Union Carbide Corp Packaging made of plastic film for extremely low temperatures
EP0027206A2 (en) * 1979-10-12 1981-04-22 Toray Industries, Inc. Capacitor
EP0027206A3 (en) * 1979-10-12 1984-03-28 Toray Industries, Inc. Capacitor
CN112300426A (en) * 2020-10-26 2021-02-02 广东安德力新材料有限公司 Preparation method of polypropylene film layer capable of eliminating stress residue
CN113561517A (en) * 2021-08-09 2021-10-29 山东胜通光学材料科技有限公司 High-definition thin brightening type polyester base film manufacturing process and equipment
CN113561517B (en) * 2021-08-09 2023-06-16 山东胜通光学材料科技有限公司 High-definition thin brightening polyester base film manufacturing process and equipment

Also Published As

Publication number Publication date
DE1504608B2 (en) 1972-03-02
LU42712A1 (en) 1963-01-19
DE1504608A1 (en) 1969-05-08

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