AU2001230178A1 - Thermoformable multi-layer partially foamed sheet - Google Patents

Thermoformable multi-layer partially foamed sheet

Info

Publication number
AU2001230178A1
AU2001230178A1 AU2001230178A AU3017801A AU2001230178A1 AU 2001230178 A1 AU2001230178 A1 AU 2001230178A1 AU 2001230178 A AU2001230178 A AU 2001230178A AU 3017801 A AU3017801 A AU 3017801A AU 2001230178 A1 AU2001230178 A1 AU 2001230178A1
Authority
AU
Australia
Prior art keywords
layer
sheet
foamed
foamed sheet
layer partially
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.)
Abandoned
Application number
AU2001230178A
Inventor
Marzia Cominetti
Gregorio Di Cesare
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.)
Cryovac LLC
Original Assignee
Cryovac LLC
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 LLC filed Critical Cryovac LLC
Publication of AU2001230178A1 publication Critical patent/AU2001230178A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material

Landscapes

  • Laminated Bodies (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Wrappers (AREA)

Abstract

A thermoformable, multi-layer, sheet comprising a foamed layer (a) comprising polypropylene, a substantially unfoamed outer heat-sealing layer (c) and a foamed layer (b) comprising a polyethylene, positioned between layers (a) and (c) wherein the thickness of the foamed polypropylene layer (a) is preferably comprised between about 45 and about 70 %, of the thickness of the entire sheet, and that of the polyethylene foamed layer (b) between about 20 and about 35 %. The sheet is preferably obtained by coextrusion and chemical foaming. The characteristics of thermoformability of the obtained sheet are remarkably improved over those of the known partially foamed polypropylene sheets while the characteristics of rigidity required for the specific applications are maintained.
AU2001230178A 2000-01-26 2001-01-11 Thermoformable multi-layer partially foamed sheet Abandoned AU2001230178A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00101499 2000-01-26
EP00101499A EP1120241A1 (en) 2000-01-26 2000-01-26 Thermoformable multi-layer partially foamed sheet
PCT/EP2001/000312 WO2001054894A1 (en) 2000-01-26 2001-01-11 Thermoformable multi-layer partially foamed sheet

Publications (1)

Publication Number Publication Date
AU2001230178A1 true AU2001230178A1 (en) 2001-08-07

Family

ID=8167702

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001230178A Abandoned AU2001230178A1 (en) 2000-01-26 2001-01-11 Thermoformable multi-layer partially foamed sheet

Country Status (6)

Country Link
EP (2) EP1120241A1 (en)
AT (1) ATE425869T1 (en)
AU (1) AU2001230178A1 (en)
DE (1) DE60138008D1 (en)
ES (1) ES2320629T3 (en)
WO (1) WO2001054894A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20102368A1 (en) * 2010-12-22 2012-06-23 Indesit Co Spa METHOD OF PREPARATION OF A THERMOPLASTIC ITEM AND ITEM PREPARED WITH THIS METHOD
EP3154791B1 (en) 2014-06-16 2018-04-04 Hewlett-Packard Development Company, L.P. Printable recording media

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164258A (en) * 1990-10-29 1992-11-17 Mitsuzo Shida Multi-layered structure
GB2263435A (en) * 1992-01-14 1993-07-28 Shell Int Research Plastics laminate containing foamed polypropylene
CA2083004A1 (en) * 1992-05-13 1993-11-14 Thomas Hessen Barrier polyprepylene foam trays
DK0809571T3 (en) * 1995-02-17 1999-06-23 Convenience Food Sys Bv Process for preparing packaging material with a layer of foamed polyolefin

Also Published As

Publication number Publication date
DE60138008D1 (en) 2009-04-30
EP1252013B1 (en) 2009-03-18
EP1252013A1 (en) 2002-10-30
ATE425869T1 (en) 2009-04-15
WO2001054894A1 (en) 2001-08-02
EP1120241A1 (en) 2001-08-01
ES2320629T3 (en) 2009-05-27

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