Clean-release tape core

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 75/10 (2006.01)

Patent

CA 2699511

A core (20) for a roll of pressure-sensitive adhesive tape (22) comprises a paperboard material wound about an axis and adhered together to form a tubular body(24), and a polymer film layer (26) wrapped about and adhered to the outer surface of the tubular body (24) so as to form a tape-receiving surface upon which adhesive tape is to be wound. The polymer film layer (26) has an overlap joint between the opposite edges (28, 30) of the polymer film ply. A recessed region (40) is formed in the outer surface of the tubular body (24 ), the recessed region (40) being recessed radially inwardly relative to the cylindrical outer surface. At least a portion of the length of the overlapping edge (28) of the polymer film ply (26) extends into and terminates in the recessed region (40) such that the overlapping edge (28) is not contacted by the adhesive tape (22) wound about the core.

L'invention porte sur une bague (20) pour un rouleau de ruban adhésif sensible à la pression (22), comprenant un matériau en carton enroulé autour d'un axe et adhérés ensemble pour former un corps tubulaire (24), et une couche de film polymère (26) enveloppée autour et adhérée à la surface externe du corps tubulaire (24), de façon à former une surface de réception de ruban sur laquelle le ruban adhésif doit être enroulé. La couche de film polymère (26) a une jonction à recouvrement entre les bords opposés (28, 30) du pli de film polymère. Une région en creux (40) est formée dans la surface externe du corps tubulaire (24), la région en creux (40) étant creusée radialement vers l'intérieur par rapport à la surface externe cylindrique. Au moins une partie de la longueur du bord de recouvrement (28) du pli de film polymère (26) s'étend dans et s'achève dans la région en creux (40) de telle sorte que le bord de recouvrement (28) n'est pas en contact avec le ruban adhésif (22) enroulé autour de la bague.

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