ES482328A1 - Process for the preparation of thermoweldable polyolefinic films - Google Patents

Process for the preparation of thermoweldable polyolefinic films

Info

Publication number
ES482328A1
ES482328A1 ES482328A ES482328A ES482328A1 ES 482328 A1 ES482328 A1 ES 482328A1 ES 482328 A ES482328 A ES 482328A ES 482328 A ES482328 A ES 482328A ES 482328 A1 ES482328 A1 ES 482328A1
Authority
ES
Spain
Prior art keywords
polyolefinic material
film
thermoweldable
preparation
stretched
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
ES482328A
Other languages
Spanish (es)
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.)
Moplefan SpA
Original Assignee
Moplefan SpA
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 Moplefan SpA filed Critical Moplefan SpA
Publication of ES482328A1 publication Critical patent/ES482328A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0014—Extrusion moulding in several steps, i.e. components merging outside the die producing flat articles having components brought in contact outside the extrusion die
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C55/026—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets of preformed plates or sheets coated with a solution, a dispersion or a melt of thermoplastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028—Stretching, elongating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Non-fibrillating thermo-weldable films are made from two layers of the same polyolefinic material, following a sequence of operations essentially comprising the extrusion of a base film, cooling and longitudinally stretching it under defined conditions, extruding a relatively thin coating of the same polyolefinic material onto the base film and then transversely stretching the composite film under defined conditions. Typically, an extruded film of isotactic polypropylene is cooled to 40 DEG C., stretched 1:5. coated at a base/ coat ratio of 8:1 and stretched transversely 1:8. The polyolefinic material should be a crystalline alpha-olefine polymer or copolymer or a mixture of such.
ES482328A 1978-07-10 1979-07-09 Process for the preparation of thermoweldable polyolefinic films Expired ES482328A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7825477A IT1097510B (en) 1978-07-10 1978-07-10 PROCEDURE FOR THE PREPARATION OF THERMAL SEALABLE POLYOLEFINIC FILMS

Publications (1)

Publication Number Publication Date
ES482328A1 true ES482328A1 (en) 1980-08-16

Family

ID=11216810

Family Applications (1)

Application Number Title Priority Date Filing Date
ES482328A Expired ES482328A1 (en) 1978-07-10 1979-07-09 Process for the preparation of thermoweldable polyolefinic films

Country Status (12)

Country Link
JP (1) JPS5514299A (en)
AT (1) ATA477579A (en)
BE (1) BE877592A (en)
DE (1) DE2927633A1 (en)
DK (1) DK286179A (en)
ES (1) ES482328A1 (en)
FR (1) FR2430836A1 (en)
GB (1) GB2024715B (en)
IT (1) IT1097510B (en)
NL (1) NL7905317A (en)
NO (1) NO792259L (en)
SE (1) SE7905937L (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333968A (en) * 1980-01-25 1982-06-08 Mobil Oil Corporation Thermoplastic packaging films with improved heat-seal characteristics
JPS5725953A (en) * 1980-07-22 1982-02-10 Toray Industries Multilayer laminated polypropylene film
EP0074194B2 (en) * 1981-08-22 1991-06-05 Showa Denko Kabushiki Kaisha Propylene-ethylene random copolymer, production process thereof, and film derived therefrom
DE3323018A1 (en) * 1983-06-25 1985-01-10 Beiersdorf Ag, 2000 Hamburg DUCT TAPE
FR2603522B1 (en) * 1986-09-08 1989-06-30 Silec Liaisons Elec FLEXIBLE TUBE WITH REDUCED LINEAR EXPANSION COEFFICIENT, MANUFACTURING METHOD THEREOF, AND APPARATUS USING THE SAME
GB0101994D0 (en) 2001-01-25 2001-03-14 Dupont Teijin Films Us Ltd Process for the production of coated polumeric film
GB0201764D0 (en) 2002-01-25 2002-03-13 Dupont Teijin Films Us Ltd Multi-layer polymeric film III
GB0316708D0 (en) 2003-07-16 2003-08-20 Dupont Teijin Films Us Ltd Polymeric film
GB0603254D0 (en) 2006-02-17 2006-03-29 Dupont Teijin Films Us Ltd Polyester film
DE102016215730A1 (en) * 2016-08-23 2018-03-01 Contitech Antriebssysteme Gmbh Method for the multi-stage production of a tensile or suspension means
CN110350155B (en) * 2018-04-04 2022-01-14 北京师范大学 Composite microporous membrane comprising nanofibrous porous layer oriented in transverse stretching direction
DE102019215880A1 (en) * 2019-10-15 2021-04-15 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung PROCESS AND FILM STRETCHER FOR THE PRODUCTION OF SEALABLE BIAXIAL ORIENTED POLYESTER-BASED FILM
GB202000114D0 (en) 2020-01-06 2020-02-19 Dupont Teijin Films Us Lp Polymeric film tube

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1805886A1 (en) * 1967-11-04 1969-09-04 Mitsubishi Petrochemical Co Heat sealable biaxially oriented polypropylene sheet films and methods of making them
DE1769028A1 (en) * 1968-03-22 1972-02-03 Kalle Ag Biaxially oriented polypropylene film
DE2637978B2 (en) * 1976-08-24 1979-10-25 Hoechst Ag, 6000 Frankfurt Heat-sealable plastic film and process for its production

Also Published As

Publication number Publication date
FR2430836A1 (en) 1980-02-08
IT7825477A0 (en) 1978-07-10
ATA477579A (en) 1983-05-15
BE877592A (en) 1980-01-09
DK286179A (en) 1980-01-11
JPS5514299A (en) 1980-01-31
FR2430836B1 (en) 1983-04-01
SE7905937L (en) 1980-01-11
GB2024715A (en) 1980-01-16
GB2024715B (en) 1982-07-21
NO792259L (en) 1980-01-11
DE2927633A1 (en) 1980-01-31
NL7905317A (en) 1980-01-14
IT1097510B (en) 1985-08-31

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