Global patent index - EP 1007356 A1

EP 1007356 A1 2000-06-14 - RADIO FREQUENCY SEALABLE EVOH-BASED PACKAGING STRUCTURE

Title (en)

RADIO FREQUENCY SEALABLE EVOH-BASED PACKAGING STRUCTURE

Title (de)

VERFAHREN ZUM HERSTELLEN VON BLATTFÖRMIGEN ARTIKELN, INSBESONDERE SHLEIFARTIKELN

Title (fr)

STRUCTURE D'EMBALLAGE A BASE D'ALCOOL D'ETHYLENEVINYLE SOUDABLE PAR RADIOFREQUENCE

Publication

EP 1007356 A1 (EN)

Application

EP 97948285 A

Priority

  • US 9720788 W
  • US 75205296 A

Abstract (en)

[origin: WO9822283A1] A combination of laminated materials which provides a non-foil packaging material (12) having enhanced sealability employing RF electric energy. In this combination, the relatively low, and otherwise inadequate, RF susceptibility of one or more layers of the laminate is enhanced to a value which provides fast and efficient heat sealing of the laminate to itself. This enhancement is accomplished through the incorporation within the laminated (12), in a selected order of lamination, of one or more layers (40) which tend to direct the heat generated by one or more inner layers (28) to that outer layer (14) of the laminate which is to be heated to an effective heat sealing temperature. Ethylene vinyl alcohol (EVOH) has been found to be particularly suitable as a primary RF susceptor in the combination of the present invention. A method for RF electric energy heat sealing of the packaging material is disclosed.

IPC 1-7 (main, further and additional classification)

B32B 31/00

IPC 8 full level (invention and additional information)

B29C 65/00 (2006.01); B32B 27/08 (2006.01); B29C 65/04 (2006.01)

CPC (invention and additional information)

B29C 65/04 (2013.01); B29C 66/43 (2013.01); B29C 66/71 (2013.01); B29C 66/723 (2013.01); B32B 27/08 (2013.01); B29C 65/08 (2013.01); B29C 65/18 (2013.01); B29C 65/38 (2013.01); B29C 66/43121 (2013.01); B29C 66/72328 (2013.01); B29C 66/72341 (2013.01); B29C 66/72343 (2013.01); B29K 2023/086 (2013.01); B29L 2009/00 (2013.01)

Combination set (CPC)

  1. B29C 66/71 + B29K 2023/086
  2. B29C 66/71 + B29K 2023/0633
  3. B29C 66/71 + B29K 2023/0625
  4. B29C 66/71 + B29K 2023/06

Designated contracting state (EPC)

CH DE ES FR GB IT LI

EPO simple patent family

WO 9822283 A1 19980528; AR 008644 A1 20000209; AU 5437798 A 19980610; CO 4770856 A1 19990430; EP 1007356 A1 20000614; EP 1007356 A4 20010801; PA 8438201 A1 20000524; ZA 9707410 B 19980219

INPADOC legal status

2001-12-12 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20011018

2001-08-01 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20010618

2001-08-01 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE ES FR GB IT LI

2001-08-01 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7B 32B 31/28 A, 7B 29C 65/04 B, 7B 32B 27/10 B, 7B 32B 27/30 B

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990906

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE ES FR GB IT LI