Flexible bag and method of making and attaching a tie

Details Flexible bag and method of making and attaching a tie Flexible bag and method of making and attaching a tie

B - Operations, Transporting

65

D

B65D 33/28 (2006.01) B31B 1/90 (2006.01) B31B 19/90 (2006.01) B65D 33/16 (2006.01)

Patent

CA 2181149

A plastic film bag (B) having a tie element (62') coated on its inner surface with an adhesive (358) between the dotted line (356) and its outer end (354). The adhesive is completely covered by a removable release strip (360). The inner end portion (62a') is permanently attached to the bag by means of a heat seal (362) or a permanent adhesive. The tie element is made by applying multiple, parallel bands of adhesive to stock material, coveting the adhesive with covet strips, and separating the web into individual rolls of web stock. Tie elements are applied to bags by moving tie element web stock along a path above a web of bag material, cutting the stock into individual elements, momentarily stopping portions of the bag material under successive tie elements, and firmly anchoring each tie element to its respective bag.

Sac en film plastique (B) possédant un élément d'attache (62') déposé sur sa surface interne et maintenu en place à l'aide d'un adhésif (358) entre la ligne pointillée (356) et son extrémité externe (354). L'adhésif est complètement recouvert d'une bande de décollement amovible (360). L'extrémité interne (62'a) est fixée de manière permanente au sac par thermosoudage (362) ou à l'aide d'un adhésif permanent. On réalise l'élément d'attache en appliquant plusieurs bandes parallèles d'adhésif à une matière à usiner, en couvrant l'adhésif avec des bandes de couverture, et en séparant la bande obtenue en rouleaux individuels. On applique les éléments d'attache sur les sacs en les faisant défiler sur un chemin passant au-dessus d'une bande de sacs, en découpant cette matière afin d'obtenir des éléments individuels, en arrêtant momentanément des parties de sacs au-dessous d'éléments d'attache successifs, et en soudant chaque élément d'attache sur son sac respectif.

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