ES251282A1 - Procedimiento para la producciën de peliculas a base de polimeros sinteticos de elevado peso molecular - Google Patents

Procedimiento para la producciën de peliculas a base de polimeros sinteticos de elevado peso molecular

Info

Publication number
ES251282A1
ES251282A1 ES0251282A ES251282A ES251282A1 ES 251282 A1 ES251282 A1 ES 251282A1 ES 0251282 A ES0251282 A ES 0251282A ES 251282 A ES251282 A ES 251282A ES 251282 A1 ES251282 A1 ES 251282A1
Authority
ES
Spain
Prior art keywords
molecular weight
high molecular
synthetic polymers
translation
production
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
ES0251282A
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.)
Montedison SpA
Original Assignee
Montecatini Societa Generale per lIndustria Mineraria e Chimica 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 Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
Publication of ES251282A1 publication Critical patent/ES251282A1/es
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

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)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

Mejoras en el procedimiento para la producción de películas a base de polímeros sintéticos de elevado peso molecular, así como artículos manufacturados similares,dotados de excelentes propiedades ópticas y mecánicas, por extrusión fundida y estiramiento de polímeros sintéticos de alto peso molecular, caracterizado por el hecho de que abarca los pasos de 1 extruir un polímero dotado de un contenido de más de 70% de polipropileno isotáctico,a temperatura entre 200ºC y 350ºC para producir una película de más de 100 micras de espesor, 2) enfriar rápidamente dicha película a una temperatura no superior a 90º C, 3) estirar la película enfriada en una primera dirección, con una relación de estiramiento total entre 1:2 y 1:16, 4) estirar la película en una segunda dirección perpendicular a la dirección empleada en el paso 3) y con una relación de estiramiento total 1:3 y 1:20 y una temperatura entre 50ºC y 170ºC.
ES0251282A 1958-08-06 1959-08-05 Procedimiento para la producciën de peliculas a base de polimeros sinteticos de elevado peso molecular Expired ES251282A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1202858 1958-08-06

Publications (1)

Publication Number Publication Date
ES251282A1 true ES251282A1 (es) 1960-02-16

Family

ID=11139328

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0251282A Expired ES251282A1 (es) 1958-08-06 1959-08-05 Procedimiento para la producciën de peliculas a base de polimeros sinteticos de elevado peso molecular

Country Status (3)

Country Link
CH (1) CH371587A (es)
ES (1) ES251282A1 (es)
NO (1) NO121243B (es)

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
GB2206524B (en) * 1987-07-08 1990-03-07 Courtaulds Films & Packaging Voided polypropylene films

Also Published As

Publication number Publication date
NO121243B (es) 1971-02-01
CH371587A (de) 1963-08-31

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