| abstract |
Plastic sheet (10) preferably in partially plasticized polyvinyl butyral, intended for a laminated safety glass, comprising a system (16) dispersed on its surface, preferably comprising a multiplicity of spaced projecting parts, resistant to adhesion on a rigid panel, such as glass, the glass of which is such when the sheet is laminated to the panel, that the area of the surface of the sheet not including the dispersed system, can adhere very easily. The protrusions (16) physically reduce the adhesion of a dispersed area of the sheet to the panel, since the system located on the surface of the sheet has little or no contact adhesion between the sheets contact adhesion between the sheets. The numerous spatial protrusions also have no or only a very low affinity for adhesion when they are in breaking contact with one another or with another partially plasticized polyvinyl butyral surface, which increases thus their blocking resistance. |