Retardable packaging container packaging laminate

Patent name: Packaging laminates for distillable packaging containers Patent Owners: Tetra Valle Group and Finance Co., Ltd. Principal Applicant Address T. Andersong, Inventor of Puri, Switzerland; I. Lace, Application (Patent) No. 02820823.4 Application Date 2002.10.18 Certification Date Approval Notice No. 1571749 Date of Validation Notice 2005.01.26 Specification CD-ROM D0504 Main Classification Number B65D65/40 Classification Number B65D65/40; B32B27/08; B32B27/10 Subsequent Original Application No. A packaging laminate for a retortable packaging container, the packaging laminate (30) comprises a paper or paperboard layer (31), an outer liquid-tight coating (32, 33), and an aluminum foil layer (34). The person acts as a gas barrier between the paper or paperboard layer (31) and one of the two outer liquid tight coatings (32, 33). To compensate for or counteract possible loss of gas density due to crack formation or similar inaccuracies in the tension-sensitive aluminum foil (34), the packaging laminate (30) includes at least one additional layer (35) that acts as the paper or A gas barrier layer between the paperboard layer (31) and the aluminum foil (34). Preferably, the at least one additional gas barrier layer (35) is bonded to the paper or paperboard layer (31) by an intermediate laminating or adhesive layer (36) of polypropylene or other olefin polymer. The thickness or number of the additional gas barrier layer (36) can be reduced without deteriorating the airtightness of the product packaging container. Slaves 1. A packaging laminate for a retortable packaging container, the packaging laminate (20; 30) comprising a core (21; 31), an outer liquid-tight coating (22; 23) and a gas as a gas A barrier layer and an aluminum foil (24; 34) disposed between the core layer (21; 31) and an outer fluid-tight coating (22; 23), characterized in that it comprises at least one core layer (21; 31) An additional layer (25; 35) serving as a gas barrier layer between aluminum foil (24; 34).