BR0007594A - Single layer polyethylene film, heat-shrinking and irradiated - Google Patents

Single layer polyethylene film, heat-shrinking and irradiated

Info

Publication number
BR0007594A
BR0007594A BR0007594-9A BR0007594A BR0007594A BR 0007594 A BR0007594 A BR 0007594A BR 0007594 A BR0007594 A BR 0007594A BR 0007594 A BR0007594 A BR 0007594A
Authority
BR
Brazil
Prior art keywords
heat
polyethylene film
irradiated
preferably less
single layer
Prior art date
Application number
BR0007594-9A
Other languages
Portuguese (pt)
Inventor
Roberto Forlini
Original Assignee
Cryovac Inc
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 Cryovac Inc filed Critical Cryovac Inc
Publication of BR0007594A publication Critical patent/BR0007594A/en

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
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • 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
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0625—LLDPE, i.e. linear low density polyethylene

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)
  • Laminated Bodies (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Patente de Invenção: "FILME DE POLIETILENO DE CAMADAúNICA, QUE SE RETRAI AO CALOR E IRRADIADO". A presenteinvenção refere-se a um processo para fabricação de um filme decamada única de polietileno que se retrai ao calor, com umavariação de espessura de menos que 20%, preferencialmentemenos que 18% e ainda mais preferencialmente de menos que15%, cujo processo compreende a extrusão da resina do filmeatravés de uma matriz plana, resfriamento rápido da folhaextrudada fundida, irradiação da mesma, reaquecimento a umatemperatura de orientação adequadamente selecionada eestiramento da folha irradiada. Preferencialmente, o polietilenocompreende um copolímero de etileno-<244>-olefina. é tambémreivindicado o filme irradiado de camada única de polietileno quese retrai ao calor, com uma variação de espessura de menos que20%, preferencialmente menos que 18% e ainda maispreferencialmente de menos que 15%.Invention Patent: "CAMADAÚNICA POLYETHYLENE FILM, WHICH RETRACTS TO HEAT AND RADIATED". The present invention relates to a process for the manufacture of a single layered polyethylene film that shrinks to heat, with a thickness variation of less than 20%, preferably less than 18% and even more preferably less than 15%, the process of which comprises extrusion of the film resin through a flat matrix, rapid cooling of the molten extruded sheet, irradiation of the same, reheating to an appropriately selected orientation temperature and stretching of the irradiated sheet. Preferably, the polyethylene comprises a copolymer of ethylene- <244> -olefin. also claimed is the irradiated single layer polyethylene film which shrinks to heat, with a thickness variation of less than 20%, preferably less than 18% and even more preferably less than 15%.

BR0007594-9A 1999-01-18 2000-01-11 Single layer polyethylene film, heat-shrinking and irradiated BR0007594A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99100787 1999-01-18
PCT/EP2000/000127 WO2000041872A1 (en) 1999-01-18 2000-01-11 Heat-shrinkable, irradiated, polyethylene mono-layer film

Publications (1)

Publication Number Publication Date
BR0007594A true BR0007594A (en) 2001-11-27

Family

ID=8237361

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007594-9A BR0007594A (en) 1999-01-18 2000-01-11 Single layer polyethylene film, heat-shrinking and irradiated

Country Status (7)

Country Link
EP (1) EP1144178A1 (en)
JP (1) JP2002534297A (en)
AU (1) AU1983900A (en)
BR (1) BR0007594A (en)
CA (1) CA2359323A1 (en)
NZ (1) NZ512959A (en)
WO (1) WO2000041872A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1297651C (en) * 1986-03-03 1992-03-24 Tomoji Mizutani Heat shrinkable film
JPH0272933A (en) * 1988-09-08 1990-03-13 Tonen Sekiyukagaku Kk Polyethylene oriented film and manufacture thereof
US5562958A (en) * 1991-10-15 1996-10-08 The Dow Chemical Company Packaging and wrapping film
FR2727050A1 (en) * 1994-11-21 1996-05-24 Bollore Technologies PROCESS FOR THE PREPARATION OF A BI-ORIENTABLE THERMORETRACTABLE ULTRAMINIC FILM AND ULTRAMINAL FILM, IN PARTICULAR OBTAINED BY THIS PROCESS

Also Published As

Publication number Publication date
AU1983900A (en) 2000-08-01
WO2000041872A1 (en) 2000-07-20
EP1144178A1 (en) 2001-10-17
JP2002534297A (en) 2002-10-15
CA2359323A1 (en) 2000-07-20
NZ512959A (en) 2003-10-31

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 5A, 6A, 7A E 8A ANUIDADES.

B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1925 DE 27/11/2007.