Adhesive tape and its use

Details Adhesive tape and its use Adhesive tape and its use

B - Operations, Transporting

65

H

B65H 19/10 (2006.01) C09J 7/02 (2006.01)

Patent

CA 2640766

Adhesive tape, which is suitable for the flying roll change of flat web material that is wound upon rolls and has nonpolar surfaces and which comprises an upper self-adhesive compound (1, 11), a splittable backing (2, 12) and a lower self-adhesive compound (3, 13) on the lower side of the splittable backing (2, 12), wherein a silicone-free self-adhesive compound with an adhesive strength on a polyethylene adherend surface of 1.5 N/cm or more (measuring method tesa test A) and a tackiness corresponding to a rolling distance of 200 mm or less (measuring method tesa test D) is used as the upper self-adhesive compound (1, 11) and a self-adhesive compound with an adhesive strength on a polyethylene adherend surface of 1.5 N/cm or more (measuring method tesa test A) and a complex viscosity of 10,000 Pa s or more at 1 rad/s and 40~C (measuring method tesa test F) is used as the lower self-adhesive compound (3, 13).

L'invention concerne un ruban adhésif qui convient pour le changement de rouleau à la volée d'un matériau en bande plane à surface non polaire enroulée sur des rouleaux et qui comprend une pâte autoadhésive supérieure (1, 11), un support refendable (2, 12) et une pâte autoadhésive inférieure (3, 13) sur le côté inférieur du support refendable (2, 12). Comme pâte adhésive supérieure (1, 11), on utilise une pâte autoadhésive sans silicone dont la force d'adhérence sur une base d'adhérence de polyéthylène est de 1,5 N/cm ou davantage (méthode de mesure : test tesa A) et dont l'adhérence initiale correspond à une longueur d'avancement du rouleau de 200 mm ou moins (méthode de mesure : test tesa D) et comme pâte autoadhésive inférieure (3, 13) une pâte autoadhésive dont la force d'adhérence sur une base d'adhérence de polyéthylène est de 1,5 N/cm ou davantage (méthode de mesure : test tesa A) et dont la viscosité complexe est de 10 000 Pa.s ou davantage à un rad/s et 40° C (méthode de mesure : test tesa F).

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