Avery Dennison Corporation

Li Xie

Chan U Ko

Kyung W Min

Kai Yi Li

Prakash Mallya

Yukihiko Sasaki

Luigi Sartor

Jesse C Ercillo

Carol A Koch

Tamara L McCartney

Paul Keller

Ian Brown

Prem Krish

Multilayer PSA label constructions that achieve a good balance of properties, namely, adhesive performance, convertibility, and laser printer performance, and, optionally, good wet-out on plastic substrates and low haze. The multilayer PSA construction comprising a facestock, a multilayer adhesive coating, and a release liner. The adhesive coating is made of a face side adhesive (FSA) layer comprising a first emulsion acrylic PSA, which is in contact with the inner surface of the facestock, and a liner side adhesive (LSA) layer, comprising a second emulsion acrylic PSA different from the first acrylic PSA, which is in contact with the FSA. The adhesive coating has a coat weight of less than about 26 g/m and a flow of less than about 50 &mgr;m at room temperature. The construction exhibits a loop tack value of at least about 3.5 N/25 mm at 5&deg; C. on a polyethylene substrate. It has been discovered that multilayer PSA label constructions exhibiting these properties also exhibit good convertibility and laser printer performance.

Multilayer pressure-sensitive adhesive label constructions

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 comprising: (A) a multilayer adhesive laminate having an overall thickness of less than about 100 microns and comprising (I) at least one composite PSA layer 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 which is in contact with the composite layer and contains no filler or less filler than the composite layer, and (B) a facestock which is in contact with and adhered to either the composite layer or the second PSA layer of the multilayer adhesive laminate.

Multilayer composite PSA constructions

This invention relates to a composite pressure sensitive adhesive composition comprising at least one first pressure sensitive adhesive material in the form of at least one continuous phase, and at least one second pressure sensitive adhesive material in the form of at least one discontinuous phase, said discontinuous phase being dispersed in said continuous phase. The invention also relates to a laminate having a composite pressure sensitive adhesive composition overlying the surface of a substrate, and to a process for making the foregoing laminate. The laminates can be used in making labels, tapes, and the like.

Composite pressure sensitive adhesive

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Painesville, OH, United States of America

Li Xie