Abstract: Adhesive sheet, particularly for use in a punching operation, composed at least of a backing and a layer of an adhesive, characterized in that the backing is in a mechanically stressed state.

Abstract: In a continuous two-stage process for preparing solvent-free polyacrylate hotmelt pressure sensitive adhesives which is gentle on the polymer and redeploys the solvent used in the process the following steps are carried out: polymerizing a self-adhesive pressure sensitive adhesive in solution, the solvent having a low vapor pressure; continuously mixing the polymer solution with antioxidants and preheating the mixture under superatmospheric pressure without boiling it; concentrating the polymer solution to a residual solvent content of less than 0.

Abstract: Process for the continuous solvent-free and mastication-free production of self-adhesive compositions based on non-thermoplastic elastomers in a continuously operating apparatus having a filling section and a compounding section, comprising a) feeding the solid components of the self-adhesive composition, such as elastomers and resins, into the filling section of the apparatus, optionally feeding of fillers, colorants and/or crosslinkers, b) transferring the solid components of the self-adhesive composition from the filling section to the compounding section, c) adding the liquid components of the self-adhesive composition, such as plasticizers, crosslinkers and/or further tackifier resins to the compounding section, d) preparing a homogeneous self-adhesive composition in the compounding section, and e) discharging the self-adhesive composition.

Abstract: In a continuous two-stage process for preparing solvent-free polyacrylate hotmelt pressure sensitive adhesives which is gentle on the polymer and redeploys the solvent used in the process the following steps are carried out:

Abstract: Process for producing a pressure-sensitive double-sided adhesive tape, in which a) a ready-made rubber-based backing material is introduced into a screw extruder, where 1. the backing material is heated by means of heating elements present on the screw extruder, 2. in a degassing zone, the backing material is freed from volatile constituents by means of the application of reduced pressure, 3.

Abstract: Process for the continuous solvent-free and mastication-free production of self-adhesive compositions based on non-thermoplastic elastomers in a continuously operating apparatus having a filling section and a compounding section, comprising a) feeding the solid components of the self-adhesive composition, such as elastomers and resins, into the filling section of the apparatus, optionally feeding of fillers, colorants and/or crosslinkers, b) transferring the solid components of the self-adhesive composition from the filling section to the compounding section, c) adding the liquid components of the self-adhesive composition, such as plasticizers, crosslinkers and/or further tackifier resins to the compounding section, d) preparing a homogeneous self-adhesive composition in the compounding section, and e) discharging the self-adhesive composition, f) coating the self-adhesive composition on a web-form material, where the coating of the web-form material is carried out using a multi-roll applicator unit, p

Abstract: Pressure-sensitive double-sided self-adhesive tape for permanent irreversible bonds, characterized in that the self-adhesive tape has a backing film based on rubbers having double bonds in the main chain, the rubbers being crosslinked such that they exhibit elastomeric behaviour, and a pressure-sensitive self-adhesive composition, based on an acrylate, which is coated on both sides of the backing film.

Abstract: Process for the simultaneous treatment of the top and bottom sides of a web of paper support each with a liquid coating material, whereina) the web of paper support is passed through the gap between two rubber rollers rotating in the same direction,b) the top side of the web of paper support is treated with the first coating material by means of a first rubber roller,the first coating material is transferred to the first rubber roller by a first screen roller rotating in the opposite direction,the first coating material is applied to the first screen roller by means of a pouring device,c) the bottom side of the web of paper support is treated with the second coating material by means of a second rubber roller,the second coating material is transferred to the second rubber roller by a second screen roller rotating in the opposite direction,the second coating material is applied to the second screen roller by means of a pouring device.

Abstract: Pressure-sensitive self-adhesive tape comprising a backing made of general purpose rubber, the backing being coated on both sides with pressure-sensitive adhesive compositions.