Flexible packaging structure with a built-in opening and...

Details Flexible packaging structure with a built-in opening and... Flexible packaging structure with a built-in opening and...

B - Operations, Transporting

65

D

B65D 75/58 (2006.01) B32B 27/08 (2006.01) B65D 77/20 (2006.01)

Patent

CA 2569646

A flexible packaging laminate is formed to have a built-in opening and reclose feature by forming the laminate as a two-part structure having an outer structure (10) joined in face-to-face relation with an inner structure (42). Score lines are formed in both structures to enable an opening to be formed through the laminate by lifting an opening portion (23) (e.g., a flap or the like) of the two structures out of the plane of the laminate. The score line (52) through the outer structure (10) defines a larger opening than the score line (62) through the inner structure (42), such that a marginal region (90) of the outer structure extends beyond the edge of the opening portion of the inner structure. A pressure-sensitive adhesive (20) is used to re-adhere the marginal region (90) to an underlying surface of the inner structure adjacent the opening through the laminate.

Un stratifié d'emballage flexible est formé pour avoir une ouverture et une possibilité de refermeture incorporées en formant le stratifié comme une structure à deux parties ayant une structure externe (10) reliée face-à-face avec une structure interne (42). Des lignes rainurées sont formées dans les deux structures afin de permettre à une ouverture d'être formée á travers le stratifié en soulevant une portion d'ouverture (23) (par exemple, un rabat ou similaire) des deux structures à partir du plan du stratifié. La ligne rainurée (52) à travers la structure externe (10) définit une ouverture plus large que la ligne rainurée (62) à travers la structure interne (42), de sorte n zone marginale (90) de la structure externe s'étend au-delà du bord de la portion d'ouverture de la structure interne. Un adhésif sensible à la pression (20) est utilisée pour coller à nouveau la zone marginale (90) à une surface sous-jacente de la structure interne adjacente à l'ouverture traversant le stratifié.

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