Producing pressure-sensitively adhesive punched products
AssigneeTesa SE
InventorsReinhard Storbeck, Marc Husemann, Matthias Koch, Maren Klose
Life of this patent
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Abstract
A process for producing pressure-sensitively adhesive punched products from backing material coated with pressure sensitive adhesive, wherein said pressure sensitive adhesive is oriented such that it possesses a preferential direction and, the punching process is carried out continuously.
Claims13
A process for producing pressure-sensitively adhesive punched products from backing material coated with pressure sensitive adhesive, wherein
- said pressure sensitive adhesive is oriented such that it possesses a preferential direction and,
- the punching process is carried out continuously.
The process as claimed in at least one of the preceding claims, wherein the oriented pressure sensitive adhesive exhibits shrinkback, the shrinkback as determined by test B (shrinkback measurement in the free film) is at least 3%.
The process as claimed in at least one of the preceding claims, wherein the refractive index measured in the preferential direction, nVR, is greater than the refractive index measured in a direction perpendicular to the preferential direction, nSR.
The process as claimed in at least one of the preceding claims, wherein said pressure sensitive adhesive is based on polyacrylate and/or polymethacrylate.
The process as claimed in at least one of the preceding claims, wherein said backing material coated with pressure sensitive adhesive is a single-sided or double-sided adhesive tape with at least one permanent backing.
The process as claimed in at least one of the preceding claims, wherein the punching process completely severs the pressure sensitive adhesive on the backing material.
The process as claimed in at least one of the preceding claims, wherein the punching process completely severs the backing material coated with pressure sensitive adhesive.
A punched product obtainable by a process as claimed in at least one of the preceding claims.
Dependencies are inferred from the claim text.