Process for the manufacture of multi-layer composites with sensitive outer surfaces
First Claim
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1. A process for the manufacture of multi-layer composites having a sensitive outer surface and for protecting the sensitive outer surface from mechanical and physical defects, comprising the steps of:
- providing a protective layer on an adhesive layer comprising a carrier on an adhesive layer, wherein the carrier is a plastic material having shear modulus values falling below a curve defined by the shear modulus values 0.7 Pa×
108 at 10°
C., 0.5 Pa×
108 at 30°
C., 0.3 Pa×
108 at 50°
C., 0.1 Pa×
108 at 100°
C., and falling asymptotically towards zero above 150°
C. under at least one of the conditions of pressure and heat, wherein the protective layer exhibits a lower resistance to deformation than the sensitive outer surface being protected;
covering the sensitive outer surface with said protective layer on said adhesive layer during the application of pressure and heat, wherein the adhesive layer is in contact with the surface to be protected; and
shielding the sensitive outer surface from said heat and pressure and the consequential mechanical and physical effect thereof via said protective layer on said adhesive layer during the step of covering and creating a sliding layer on said sensitive outer surface.
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Abstract
The invention relates to a process for protecting sensitive surfaces from mechanical and physical effects, in particular the effects of pressure and/or heat, whereby the surfaces are covered by a protective layer during the application of pressure and/or heat. The protective layer is a thermoplastic or elastic plastic that is molten, plastic or elastic under the conditions of applied pressure and/or heat, and has a lower resistance to deformation than the surface to be protected.
34 Citations
10 Claims
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1. A process for the manufacture of multi-layer composites having a sensitive outer surface and for protecting the sensitive outer surface from mechanical and physical defects, comprising the steps of:
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providing a protective layer on an adhesive layer comprising a carrier on an adhesive layer, wherein the carrier is a plastic material having shear modulus values falling below a curve defined by the shear modulus values 0.7 Pa×
108 at 10°
C., 0.5 Pa×
108 at 30°
C., 0.3 Pa×
108 at 50°
C., 0.1 Pa×
108 at 100°
C., and falling asymptotically towards zero above 150°
C. under at least one of the conditions of pressure and heat, wherein the protective layer exhibits a lower resistance to deformation than the sensitive outer surface being protected;covering the sensitive outer surface with said protective layer on said adhesive layer during the application of pressure and heat, wherein the adhesive layer is in contact with the surface to be protected; and shielding the sensitive outer surface from said heat and pressure and the consequential mechanical and physical effect thereof via said protective layer on said adhesive layer during the step of covering and creating a sliding layer on said sensitive outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification