摘要:
The invention relates to a process for producing versatile plastic products, preferably single-sidedly self-adhesive products bearing an abrasion-resistant and flexible protective layer which is distinguished by particularly high surface quality especially in terms of its optical properties.
摘要:
The invention relates to a composite sheet. Provision is made for the composite sheet to comprise a polymeric base sheet and a polymeric varnish layer, said varnish layer havingan abrasion resistance, expressed as pencil hardness, of at least 4H; anda flexibility such that, when the composite sheet is bent around the two closely adjacent edges of a metal strip 100 μm thick, the varnish layer does not break or delaminate from the base sheet;and said varnish layer having the following optical properties:a transmittance at 400, 600 and 800 nm of at least 85%, determined by applying the varnish layer-forming formulation with a thickness of 5 μm to a slide, curing the varnish layer and determining the transparency of the slide with the varnish layer in comparison to an uncoated slide; anda turbidity of not more than 5%, determined by haze measurement.
摘要:
The invention relates to a method for producing pressure-sensitive adhesives that have low or no anisotropy, the process elements including an adhesive supply system, an application unit and a placement element. A melt strip of the pressure-sensitive adhesive is produced between the outlet of the application unit and the point of placement on the placement element and is stretched. The invention is characterized by controlling the stretching of the pressure-sensitive adhesive in the free melt strip by adjusting an effective ration G which is defined as the ratio of the effective time Δt of the stretching to the stretching rate R, and which is adjust to a value of not more that 0.008 s2. The effective time Δt is defined by the formula 2 Lr/[vstrip (1+r)] wherein L is the length of the melt strip, r is the stretching ratio and vstrip is the speed of the melt strip and the stretching rate R is defined as a temporal derivative of the stretching ratio r.
摘要:
The invention relates to a method for producing pressure-sensitive adhesives that have low or no anisotropy, the process elements including an adhesive supply system, an application unit and a placement element. A melt strip of the pressure-sensitive adhesive is produced between the outlet of the application unit and the point of placement on the placement element and is stretched. The invention is characterized by controlling the stretching of the pressure-sensitive adhesive in the free melt strip by adjusting an effective ratio G which is defined as the ratio of the effective time Δt of the stretching to the stretching rate R, and which is adjusted to a value of at least 0.006 s2 or to a value of not more that 0.004 s2. The effective time Δt is defined by the formula 2Lr/[vstrip(1+r)] wherein L is the length of the melt strip, r is the stretching ratio and vstrip is the speed of the melt strip and the stretching rate R is defined as a temporal derivative of the stretching ratio r.
摘要:
The invention relates to a process for producing anisotropic pressure-sensitive adhesives (PSAs) using conventional coating methods. It is envisaged that a PSA film be produced on a transport carrier and that it then be transferred to a further carrier material with simultaneous stretching, the elongation being at least 10%.
摘要:
The invention relates to a process for producing anisotropic pressure-sensitive adhesives (PSAs) using conventional coating methods. It is envisaged that a PSA film be produced on a transport carrier and that it then be transferred to a further carrier material with simultaneous stretching, the elongation being as least 10%.
摘要:
For improving the joining of pressure-sensitive adhesives to a carrier or substrate, an acrylate-based adhesive having a base adhesive and additives is proposed, its additives including at least one modified polydialkylsiloxane.
摘要:
The invention relates to a pressure-sensitive supporting material, which can be (intrinsically) heated by an inner heat source, and to the use thereof. The heatable supporting material is characterized in that the supporting material comprises a pressure-sensitive adhesive layer inside of which heat is generated. The pressure-sensitive adhesive layer is a pressure-sensitive adhesive compound, which can be heated by electric current, induction, a chemical reaction or by a physical phase transition. The heatable supporting material has a high heating capacity and is suited for producing pressure-sensitive tapes for adhering heatable mirrors.
摘要:
Process for temporary fixing of a polymeric layer material on rough surfaces, wherein the polymer layer material encompasses at least one viscoelastic layer, wherein the process involves laying the layer material on the rough surface, introducing energy in order to lower the viscosity of the at least one viscoelastic layer, in such a way that flow onto the rough surface takes place, and the layer is crosslinked in such a way as to produce a layer which has at least some elastomeric character and which at least to some extent wets the rough surface.
摘要:
Process for producing a composite of catalyst material and solid electrolyte membrane for an electrochemical cell in which a catalyst material is first applied to a repellent carrier which has at least one release layer of a condensation- or radiation-crosslinked organopolysiloxane, and is then laminated at least partly onto at least one side of a membrane.