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AssigneeAvery Dennison Corporation
InventorsFrederick N. Miekka, William F. Scholz, Rick J. Verhines, Norman A. Conti, Karl Josephy
Estimating the term…
Prelaminate pressure-sensitive adhesive (PSA) constructions comprise, a first substrate, a coating or release material on a surface of the first substrate, a PSA layer disposed on the coating of release material, and a detackified layer (DL) disposed on a surface of the PSA layer to form a continuous film covering the PSA layer. In first and second embodiments of the construction the DL is activatable to form a tacky layer on top of the PSA layer for lamination with a second substrate. In a third embodiment, the DL includes constituents that when activated migrate into the PSA layer to expose the PSA layer tacky surface for lamination with a second substrate. The prelaminate PSA constructions are completely nonblocking to a minimum 24 hour blocking temperature of about 50° C. at pressure of about 40 kilopascals, thereby allowing such prelaminate PSA construction to be collected, stored, and or transported before being laminated without adhesive interference occurring between continuous layers. The DL in each embodiment is activatable in less than five seconds to provide a tacky layer having a sufficient open tack time to permit lamination at less than about 100° C.
A method for forming a detackified pressure-sensitive adhesive construction comprising the step of depositing a layer of pressure-sensitive adhesive material onto a coating of release material disposed on a surface of a first flexible substrate, and
A method for forming a detackified pressure-sensitive adhesive construction comprising a single step of depositing a layer of pressure-sensitive adhesive material onto a coating of release material disposed on a surface of a first flexible substrate, and simultaneously applying a detackifying material onto a surface of the pressure-sensitive adhesive material to form a continuous film layer thereon that occludes the pressure-sensitive adhesive construction and that, in combination with the pressure-sensitive adhesive, is sufficient self supporting to facilitate printing, converting and dispensing, the detackifying material being heat activatable without removal from the construction within less than about five seconds to form a tacky surface independent of the pressure-sensitive adhesive for lamination to a second substrate at a temperature less than an activation temperature.
A method for forming a laminated pressure-sensitive adhesive construction comprising the steps of:
A method for forming a laminated pressure-sensitive adhesive construction comprising the steps of:
Dependencies are inferred from the claim text.