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Machine translation
1. (WO1997014629) A LAMINATED PACKAGING MATERIAL, A METHOD OF PRODUCING THE MATERIAL, AND A PACKAGING CONTAINER PRODUCED FROM THE MATERIAL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/014629    International Application No.:    PCT/SE1996/001320
Publication Date: 24.04.1997 International Filing Date: 17.10.1996
Chapter 2 Demand Filed:    13.05.1997    
IPC:
B32B 27/10 (2006.01)
Applicants: TETRA LAVAL HOLDINGS & FINANCE S.A. [CH/CH]; 70, avenue Général-Guisan, CH-1009 Pully (CH) (For All Designated States Except US).
BENTMAR, Mats [SE/SE]; (SE) (For US Only).
Berlin, Mikael [SE/SE]; (SE) (For US Only)
Inventors: BENTMAR, Mats; (SE).
Berlin, Mikael; (SE)
Agent: SUNDELL, Håkan; AB Tetra Pak, Patent Dept., Ruben Rausings gata, S-221 86 Lund (SE)
Priority Data:
9503695-0 20.10.1995 SE
Title (EN) A LAMINATED PACKAGING MATERIAL, A METHOD OF PRODUCING THE MATERIAL, AND A PACKAGING CONTAINER PRODUCED FROM THE MATERIAL
(FR) MATERIAU D'EMBALLAGE LAMINE, PROCEDE DE PRODUCTION DE CE MATERIAU ET RECIPIENT D'EMBALLAGE REALISE DANS CE MATERIAU
Abstract: front page image
(EN)The disclosure relates to a laminated packaging material (10) comprising a core layer (11) of paper or peperboard and a layer (12) of polyvinyl alcohol serving as oxygen gas barrier on one side of the core layer. In order to avoid excessively large quantities of polyvinyl alcohol on application of the oxygen gas barrier layer (12), a layer (13) is applied which serves as a binder and consists of a mixture of polyvinyl alcohol and a gel-forming substance, for example agar, between the polyvinyl alcohol layer (12) and the core layer (11), with the aid of which excessive penetration of polyvinyl alcohol into the core layer (11) is effectively counteracted, at the same time as the applied binder layer (13) smoothes and evens out the coarse surface structure of the core layer (11) and forms a smooth substrate for the polyvinyl alcohol layer (12). The quantity of gel-forming substance in the binder layer (13) may amount to between 1 and 20 per cent of the total weight of the mixture.
(FR)La présente invention concerne un matériau d'emballage (10) laminé constitué d'une couche centrale (11) en papier ou en carton et, sur une face de la couche principale, d'une couche (12) d'alcool polyvinylique utilisée comme barrière contre l'oxygène gazeux. Pour éviter d'utiliser des quantités excessives d'alcool polyvinylique lors de l'application de la couche (12) barrière contre l'oxygène gazeux, on applique une couche (13) de liant constituée d'un mélange d'alcool polyvinylique et de gélifiant tel que l'agar-agar, entre la couche (12) d'alcool polyvinylique et la couche centrale (11). Cela permet d'empêcher efficacement une pénétration excessive d'alcool polyvinylique dans la couche centrale (11), la couche de liant (13) appliquée lissant et régularisant en outre la structure superficielle grossière de la couche centrale (11), formant ainsi un substrat lisse pour la couche (12) d'alcool polyvinylique. La quantité de gélifiant dans la couche de liant (13) peut être comprise entre 1 et 20 % du poids total du mélange.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN.
African Regional Intellectual Property Organization (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)