Pack, composite sheet for producing a pack, apparatus for producing the composite sheet, and process for producing vacuum packs
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United States of America Patent
Stats
-
Feb 19, 1991
Grant Date -
N/A
app pub date -
Aug 10, 1989
filing date -
Aug 26, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Pack. Packs consisting of a multilayer composite sheet are frequently used for holding aroma-sensitive commodities, particularly ground roasted coffee. The pack is composed of a central (coffee) block (10) and of fin folds projecting at both ends. In the region of the fin folds a tear-open strip (17) is provided under a closure seam (11) to facilitate the opening of the pack. The tear-open strip (17) likewise consists of a composite sheet and is connected to the pack-composite sheet by heat sealing to ensure that there is no impairment of taste of the pack's contents while at the same time guaranteeing a high-strength connection.
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