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1. WO2000040407 - EASY OPENING HERMETICALLY SEALED FILM

Publication Number WO/2000/040407
Publication Date 13.07.2000
International Application No. PCT/US1999/030339
International Filing Date 20.12.1999
Chapter 2 Demand Filed 26.07.2000
IPC
B32B 27/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
32comprising polyolefins
C08L 23/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
C08L 23/08 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
C08L 23/20 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
20having four to nine carbon atoms
C08L 83/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
83Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Compositions of derivatives of such polymers
04Polysiloxanes
CPC
B32B 2038/0092
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
38Ancillary operations in connection with laminating processes
0052Other operations not otherwise provided for
0092Metallizing
B32B 2307/31
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
30having particular thermal properties
31Heat sealable
B32B 2307/518
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
50having particular mechanical properties
514Oriented
518bi-axially
B32B 2307/582
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
50having particular mechanical properties
582Tearability
B32B 2307/72
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
70Other properties
72Density
B32B 2323/046
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2323Polyalkenes
04Polyethylene
046LDPE, i.e. low density polyethylene
Applicants
  • MOBIL OIL CORPORATION [US/US]; 3225 Gallows Road Fairfax, VA 22037, US
Inventors
  • KONG, Dan-Cheng; US
  • MOUNT, Eldridge, Milford, III; US
  • SU, Tien-Kuei; US
Agents
  • ALEXANDER, David, J.; ExxonMobil Chemical Company P.O. Box 2149 Baytown, TX 77522-2149, US
Priority Data
09/224,49031.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EASY OPENING HERMETICALLY SEALED FILM
(FR) FILM HERMETIQUEMENT SCELLE A OUVERTURE FACILE
Abstract
(EN)
The present invention relates to a biaxially oriented multilayer film which is heat sealable over a broad temperature range. It is desirable to have a broad sealing temperature range to increase the production of packaging machines. The present invention also relates to a biaxially oriented multilayer film which provides easy opening and hermetic seals to packages. The film is made up of a core layer comprising linear low-density polyethylene (LLDPE) and at least one skin layer having a melting point of at least 10 °C below the core layer melting point.
(FR)
La présente invention concerne un film multicouche à orientation biaxiale, thermoscellable dans une large plage de températures. Il est préférable que la plage de températures de scellement soit large afin d'accroître la production des machines à emballer. La présente invention concerne également un film multicouche à orientation biaxiale permettant de procéder à une ouverture facile et un scellement hermétique d'emballages. Le film est formé d'une couche noyau comprenant un polyéthylène linéaire basse densité et d'au moins une couche supérieure possédant un point de fusion inférieur d'au moins 10 °C au point de fusion de la couche noyau.
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