Geometrically defined pressure-sensitive adhesive film
AssigneeLohmann GmbH & Co. KG
InventorsFlorian DÜMMLER, Ruben FRIEDLAND
Life of this patent
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Abstract
The present invention relates to a geometrically defined pressure-sensitive adhesive film which is produced in a continuous roll-to-roll process by means of a polyjet modeling method, wherein, due to this printing process, adhesive films no longer have to be subsequently stamped, which contributes to avoiding waste and thus conserving resources.
Claims11
-16. (canceled)
An adhesive tape having at least one pressure-sensitive adhesive film, which is capable of connecting two joining partners to one another only by applying pressure, wherein the adhesive tape is designed either as a transfer adhesive tape, wherein the adhesive tape is applied to a release liner or between two release liners and the release liners are provided to be pulled off upon an application of the transfer adhesive tape to expose adhesive surfaces of the adhesive film, or is designed as a rolled adhesive tape having a single double-sided repellent liner characterized in that the adhesive film is produced by means of a polyjet modeling method, wherein the adhesive is applied by means of piezoelectric actuators in the nozzles at frequencies between 10 kHz and 100 kHz to the release liner or the double-sided repellent liner and no subsequent shaping process takes place.
The adhesive tape as claimed in claim 1, characterized in that the adhesive film has geometrically defined forms in both a two-dimensional and three-dimensional aspect.
The adhesive tape as claimed in claim 1, characterized in that the adhesive film has UV acrylates, hot melts, and/or solvent-based and water-based acrylates and is printed in the viscosity range from 2 mPas to 100 mPas.
The adhesive tape as claimed in claim 1, characterized in that the applied drop volume varies between 2 and 200 pl.
The adhesive tape as claimed in claim 1, characterized in that the adhesive film consists of multiple different adhesive film layers, which are both variations of UV acrylates, hot melts, and solvent-based and water-based acrylates and also variations of the four different chemistries.
The adhesive tape as claimed in claim 1, characterized in that the adhesive film has a thickness of between 1 μm and 3000 μm.
The adhesive tape as claimed in claim 1, characterized by a functionalization to create a thermal or electrical conductivity.
The adhesive tape as claimed in claim 1, characterized by a functionalization to create active ingredient patches by means of drugs or medical active ingredients.
The adhesive tape as claimed in claim 1, characterized by a functionalization by means of herbicides and biocides.
The adhesive tape as claimed in claim 1, characterized by a coloration of the adhesive films and/or a display of color effects of the adhesive film.
Dependencies are inferred from the claim text.