Source: https://patents.google.com/patent/US5478618A/en
Timestamp: 2019-04-21 13:29:27
Document Index: 552484868

Matched Legal Cases: ['application no. 9100057', 'application no. 9100057', 'in fine', 'in fine', 'in fine', 'in fine']

US5478618A - Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate - Google Patents
Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate Download PDF
US5478618A
US5478618A US07/875,834 US87583492A US5478618A US 5478618 A US5478618 A US 5478618A US 87583492 A US87583492 A US 87583492A US 5478618 A US5478618 A US 5478618A
US07/875,834
TETRA ALFA HOLDINGS S A A CORP OF SWITZERLAND
1991-05-03 Priority to SE9101331A priority Critical patent/SE502397C2/en
1991-05-03 Priority to SE9101331 priority
1992-04-28 Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
1992-06-04 Assigned to TETRA ALFA HOLDINGS S A A CORP. OF SWITZERLAND reassignment TETRA ALFA HOLDINGS S A A CORP. OF SWITZERLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROSEN, AKE
1993-10-18 Assigned to TETRA LAVAL HOLDINGS & FINANCE SA reassignment TETRA LAVAL HOLDINGS & FINANCE SA CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: TETRA ALFA HOLDINGS S.A.
1995-12-26 Publication of US5478618A publication Critical patent/US5478618A/en
The Swedish patent no. 468,635 (Swedish patent application no. 9100057-0) describes a packaging material which, like the two last mentioned packaging materials described above, has a strengthening skeletal layer of plastic and filler mixed in the plastic but which, instead of an Al foil, uses an oxygen barrier layer consisting of plastic of the same type as the plastic in the skeletal layer in a mixture with plastic of a different type from the plastic in the skeletal layer. As a particularly preferred type the Swedish patent no. 468,635 (Swedish patent application no. 9100057-0) describes a packaging material in which the plastic in the skeletal layer is to consist of a propylene homopolymer with a melting index of less than 1 according to ASTM (2.16 kg; 230° C.) or an ethylene/propylene copolymer with a melting index between 0.5 and 5 according to ASTM (2.16 kg; 230° C.) and an ethylene/vinyl alcohol copolymer.
A particularly preferred embodiment of the invention thus has the following composition of the layers of material in the packaging laminate 10: the skeletal layer 11 consists of about 35% weight of an ethylene/propylene copolymer with a melting index of between 0.5 and 5 according to ASTM (2.16 kg; 230° C.) and about c. 65% weight filler (preferably chalk); the barrier layer consists of a mixture of 34% weight ethylene/propylene copolymer with a melting index of between 0.5 and 5 according to ASTM (2.16 kg; 230° C.), 40% weight ethylene/vinyl alcohol copolymer (EVOH), c. 6% weight soot (carbon black) and about 20% weight graphite; and the outer sealing layer 13 consists of an ethylene/propylene copolymer with a melting index of between 0.5 and 5 according to ASTM (2.16 kg; 230° C.).
1. A container having a wall for enclosing the contents of the container, comprising:
a flexible wall laminate having a skeletal layer having an inner side and an outer side, said skeletal layer comprising a mixture of plastic and filler wherein the amount of filler in the skeletal layer is in the range of 50 to 80% by weight of the skeletal layer, and a barrier layer bonded to the inner side of the skeletal layer, said barrier layer comprising a mixture of plastic of the same composition as the plastic in the skeletal layer, plastic of a different composition from the plastic in the skeletal layer, and an electrically conductive material in fine particle form, said different type of plastic providing oxygen impermeability to the barrier layer; said container being sealable by inductive heating or dielectric sealing due to the presence of the electrically conductive material.
2. The container according to claim 1, wherein the flexible wall further comprises an outer layer adjacent to the barrier layer such that the barrier layer is between the skeletal layer and the outer layer, said outer layer comprising plastic of the same composition as in the skeletal layer.
3. The container according to claim 2, wherein the plastic in the skeletal layer consists of a propylene homopolymer with a melting index of under 1 according to ASTM (2.16 kg; 230° C.) or an ethylene/propylene copolymer with a melting index of between 0.5 and 5 according to ASTM (2.16 kg; 230° C.).
10. A container having a wall for enclosing the contents of the container, comprising a flexible wall laminate having:
an oxygen impermeable barrier layer bonded to the inner side of the skeletal layer, said barrier layer consisting of a mixture of plastic of the same composition as the plastic in the skeletal layer, ethylene/vinyl alcohol copolymer, and an electrically conductive material in fine particle form consisting of either carbon black in the amount of 10-15% by weight or a mixture of carbon black in the amount of 5-15% by weight and graphite in the amount of 15-25% by weight; and
an outer layer bonded to the barrier layer such that the barrier layer is between the skeletal layer and the outer layer, said outer layer consisting of plastic of the same composition as in the skeletal layer;
said container being sealable by inductive heating or dielectric sealing due to the presence of the electrically conductive material.
11. A container according to claim 1, wherein the amount of filler in the skeletal layer is about 65% by weight of the skeletal layer.
12. A container having a wall for enclosing the contents of the container, comprising a flexible wall laminate having:
a barrier layer bonded to the inner side of the skeletal layer, said barrier layer comprising a mixture of plastic of the same composition as the plastic in the skeletal layer, plastic of a different composition from the plastic in the skeletal layer with said different type of plastic providing oxygen impermeability to the barrier layer and being selected from the group consisting of ethylene/vinyl alcohol copolymer, polyvinylidine chloride and polyamide, and an electrically conductive material in fine particle form;
13. A container having a wall for enclosing the contents of the container, comprising a flexible wall laminate having:
a barrier layer bonded to the inner side of the skeletal layer, said barrier layer comprising a mixture of plastic of the same composition as the plastic in the skeletal layer, plastic of a different composition from the plastic in the skeletal layer with said different composition of plastic providing oxygen impermeability to the barrier layer, and an electrically conductive material in fine particle form; and
an outer layer bonded to the barrier layer such that the barrier layer is between the skeletal layer and the outer layer, said outer layer comprising plastic of the same type as in the skeletal layer;
US07/875,834 1991-05-03 1992-04-28 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate Expired - Fee Related US5478618A (en)
SE9101331A SE502397C2 (en) 1991-05-03 1991-05-03 Packaging laminates with excellent sealing and barrier properties, as well as the packaging laminate produced packaging containers
US08/042,396 US5484660A (en) 1991-05-03 1993-04-02 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
US08/328,348 US5635011A (en) 1991-05-03 1994-10-21 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
US08/042,396 Division US5484660A (en) 1991-05-03 1993-04-02 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
US4240093A Division 1993-04-02 1993-04-02
US5478618A true US5478618A (en) 1995-12-26
US07/875,834 Expired - Fee Related US5478618A (en) 1991-05-03 1992-04-28 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
US08/042,396 Expired - Fee Related US5484660A (en) 1991-05-03 1993-04-02 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
US08/328,348 Expired - Fee Related US5635011A (en) 1991-05-03 1994-10-21 Packaging laminate with excellent sealing and barrier properties and also packaging container manufactured from the packaging laminate
AT (1) AT149118T (en)
AU (1) AU647266B2 (en)
GR (1) GR3022685T3 (en)
SE (1) SE502397C2 (en)
US6534132B1 (en) 1997-05-14 2003-03-18 Tetra Laval Holdings & Finance S.A. Method of producing a printing ink-decorated packaging material, in particular for aseptic packages
USRE40519E1 (en) * 1997-12-12 2008-09-23 Shin-Etsu Chemical Co., Ltd. Conductive fluoro-resin compositions
SE528260C2 (en) * 2004-12-14 2006-10-03 Tetra Laval Holdings & Finance Packaging laminates and packaging containers
BR112013029178A2 (en) * 2011-05-12 2017-01-31 Macro Eng & Tech Inc multilayer plastic pipe and packaging
KR101948977B1 (en) 2016-07-06 2019-02-18 주식회사 포스코 Washer and jig including same
CN107892090A (en) * 2017-11-01 2018-04-10 苏州甫众塑胶有限公司 Aluminum foil base composite packaging material and preparation method thereof
EP0353991A2 (en) * 1988-08-01 1990-02-07 Tetra Laval Holdings &amp; Finance SA A packing material and packing containers manufactured from the material
1991-05-03 SE SE9101331A patent/SE502397C2/en unknown
1992-04-28 DK DK92107203T patent/DK0512364T3/en active
1992-04-28 ES ES92107203T patent/ES2099179T3/en not_active Expired - Lifetime
1992-04-28 AT AT92107203T patent/AT149118T/en not_active IP Right Cessation
1992-04-28 US US07/875,834 patent/US5478618A/en not_active Expired - Fee Related
1992-04-28 DE DE1992617573 patent/DE69217573D1/en not_active Expired - Fee Related
1992-04-28 DE DE1992617573 patent/DE69217573T2/en not_active Expired - Lifetime
1992-04-28 EP EP19920107203 patent/EP0512364B1/en not_active Expired - Lifetime
1992-04-30 CA CA 2067639 patent/CA2067639C/en not_active Expired - Fee Related
1992-04-30 RU SU925011831A patent/RU2054365C1/en not_active IP Right Cessation
1992-05-01 AU AU15947/92A patent/AU647266B2/en not_active Ceased
1992-05-06 JP JP15844592A patent/JP3121437B2/en not_active Expired - Fee Related
1993-04-02 US US08/042,396 patent/US5484660A/en not_active Expired - Fee Related
1994-10-21 US US08/328,348 patent/US5635011A/en not_active Expired - Fee Related
1997-02-27 GR GR970400232T patent/GR3022685T3/en unknown
Encyclopedia of Polymer Science and Engineering, 1985, vol. 1, p. 472. *
Japanese Patent Abstracts, vol. 13, No. 244, Feb. 28, 1989. *
DE69217573D1 (en) 1997-04-03
JP3121437B2 (en) 2000-12-25
EP0512364B1 (en) 1997-02-26
AT149118T (en) 1997-03-15
DE69217573T2 (en) 1997-06-12
RU2054365C1 (en) 1996-02-20
AU647266B2 (en) 1994-03-17
EP0512364A1 (en) 1992-11-11
ES2099179T3 (en) 1997-05-16
SE9101331L (en) 1992-11-04
US5635011A (en) 1997-06-03
JPH05201463A (en) 1993-08-10
CA2067639C (en) 2001-08-21
SE502397C2 (en) 1995-10-16
AU1594792A (en) 1992-11-05
CA2067639A1 (en) 1992-11-04
GR3022685T3 (en) 1997-05-31
DK0512364T3 (en) 1997-03-17
SE9101331D0 (en) 1991-05-03
US5484660A (en) 1996-01-16
DE69434157T2 (en) 2005-11-10 Packaging laminate with a gas and aroma barrier properties
EP0245921B2 (en) 1996-10-02 Heat sealable barrier material for improved juice packaging
CA1135168A (en) 1982-11-09 Packing laminate provided with crease lines
EP0871570B1 (en) 2008-06-18 Sterilisation of a filled container manufactured from a packaging laminate based on cardboard and paper
EP0138146B1 (en) 1988-08-10 Packaging laminate and use thereof
RU2289535C2 (en) 2006-12-20 Laminated packing material for packing container to be sterilized
Owner name: TETRA ALFA HOLDINGS S A A CORP. OF SWITZERLAND,
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROSEN, AKE;REEL/FRAME:006161/0295