Multilayer composite psa constructions

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 7/02 (2006.01) B32B 7/06 (2006.01) B32B 7/12 (2006.01)

Patent

CA 2389044

The present invention relates to improved performance multilayer PSA constructions useful for making labels. In one embodiment the invention relates to a multilayer PSA construction (10) comprising: (A) a multilayer adhesive laminate (10) having an overall thickness of less than about 100 microns and comprising (i) at least one composite PSA layer (16) comprising a continuous phase of a pressure sensitive adhesive and a discontinuous phase of non-adhesive filler particles, filler particle aggregate, or a mixture thereof, and (ii) at least one second PSA layer (14) which is in contact with the composite layer (16) and contains no filler or less filler then the composite layer, and (B) a facestock (12) which is in contact with and adhered to either the composite layer (16) or the second PSA layer (14) of the multilayer adhesive laminate (10).

La présente invention concerne des procédés de fabrication d'adhésifs autocollants multicouches à performances améliorées utiles pour la fabrication d'étiquettes. Dans un mode de réalisation, l'invention concerne la fabrication d'un adhésif autocollant multicouche (10) comprenant (A) un laminé adhésif multicouche (10) d'une épaisseur totale inférieure à environ 100 µ comprenant (i) au moins une couche adhésive autocollante composite (16) renfermant une phase continue d'un adhésif autocollant et une phase discontinue de particules de remplissage non adhésives, d'un agrégat de particules de remplissage, ou d'un mélange des deux, et (ii) au moins une seconde couche adhésive autocollante (14) en contact avec la couche composite (16) ne renfermant pas ou renfermant moins de particules de remplissage que la couche composite, et (B) un film à étiquette (12) en contact avec et adhérant soit à la couche composite (16), soit à la seconde couche adhésive autocollante (14) du laminé adhésif multicouche (10).

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