Splicing tape, splicing method and splice using the splicing...

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 21/00 (2006.01) B65H 19/10 (2006.01)

Patent

CA 2187884

A splicing tape (200) comprises a splicing portion (1, 2) and an attachment portion (42, 48), said attachment portion (42, 48) being provided for releasably and self-supporting attaching said splicing tape (200) substantially across the width of a roll of sheet material. A first adhesive layer (2) is provided on a backing (1) extending from one longitudinal edge of the backing (1) across the tape to a first position towards the centre of the backing (1), said first adhesive layer (2) being provided for attaching the leading edge of the roll to the splicing tape (200). A second adhesive layer (2) is provided on the backing (1) beginning at or beyond, but not overlapping the first position and extending towards the second longitudinal edge of he backing (1). The second adhesive layer is for attachment to a further sheet material. The attachment portion (42, 48) includes a third adhesive layer adapted to release the leading edge and splicing portion (1, 2) from the underlying sheet material leaving a non-tacky outer surface of the underlying sheet material. The splice can be completed by attaching a further sheet material to the splicing portion (1,2). The third adhesive layer may be provided by a weakly adhering or stretch release adhesive layer. The invention may be adapted to produce overlap, in particular staggered overlap splices. According to the invention, methods of making permanent or flying splices are provided.

Bande de raccord (200) comprenant une portion (1, 2) de raccord ainsi qu'une portion (42, 48) de fixation, laquelle est conçue pour attacher par soutien automatique et de façon détachable ladite bande de raccord (200) essentiellement sur toute la largeur d'un rouleau de matériau en feuille. Un support (1) est pourvu d'une première couche adhésive (2) s'étendant d'un bord longitudinal de ce support (1), à travers la bande, à une première position en direction du centre du support (1), cette première couche (2) étant conçue pour attacher le bord d'attaque du rouleau à la bande de raccord (200). Ledit support (1) est également pourvu d'une seconde couche adhésive (2) partant de la première position sans toutefois la chevaucher, ou d'au-delà de celle-ci, et s'étendant en direction du second bord longitudinal du support (1). La seconde couche adhésive est destinée à être attachée à un autre matériau en feuille. La portion de fixation (42, 48) comprend une troisième couche adhésive conçue pour libérer le bord d'attaque et la portion de raccord (1, 2) du matériau en feuille situé en dessous de la bande, laissant une surface extérieure non collante dudit matériau en feuille. On peut terminer le raccord en attachant un autre matériau en feuille à la portion de raccord (1, 2). La troisième couche adhésive peut être dotée d'une couche adhésive de faible adhérence ou libérable par extension. On peut adapter l'invention afin de produire des raccords se chevauchant, notamment des raccords se chevauchant en quinconce. L'invention concerne également des procédés de fabrication de raccords permanents ou volants.

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