摘要:
The invention is directed to a process for embossing a film comprising plasticized polyvinyl acetal with a roughness Rz on at least one surfaces of 20 to 100 μm by the process steps of a. extrusion of plasticised polyvinyl acetal to a film with a stochastic roughness of the surfaces of Rz = 1 to 70 μm, b. embossing of at least one surface of the film obtained in step a) with channels having a depth of 5 - 50 μm, a width of 10 - 200 μm and a pitch of 50 - 2500 μm, wherein c. the surface roughness of the elevations between the channels is at most 20% lower as obtained in step a).
摘要:
The invention relates to a method for producing a structured film which is based on polymeric materials such as plasticizer-containing partially acetalized polyvinyl alcohols and has a non-stochastic surface roughness Rz of 35 to 120 µm on one or both sides. According to the inventive method, the structured film is produced by means of melt fracture extrusion followed by embossing of the obtained film.
摘要:
The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties even in a nip roll method and hardly forming air bubbles to enable the production of a highly visible laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses and a large number of projections on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent to each other in parallel with one another, the recesses each having a groove shape with a continuous bottom having a ratio (R/Sm × 100) of a radius of rotation R of the bottom to an interval Sm between the recesses of 15% or higher.
摘要:
The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties even in a nip roll method and hardly forming air bubbles to enable the production of a highly visible laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses and a large number of projections on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent to each other in parallel with one another, the recesses each having a groove shape with a continuous bottom having a ratio (R/Sm × 100) of a radius of rotation R of the bottom to an interval Sm between the recesses of 15% or higher.
摘要:
A high frequency semi-isotropic embossed polymer interlayer sheet is disclosed. The embossed polymer interlayer sheet has a first side; a second side opposing the first side; and an embossed surface on at least one of the sides, and a surface texture ratio, Str, (as measured per ISO 25178) of between 0.1 and 0.99. The embossed polymer sheet may have at least 50 roughness peaks per centimeter (R PC, as measured per ASME B46.1 [1985]). The embossed polymer sheet may have a mottle value of less than or equal to 2.5 (as measured by a Clear Mottle Analyzer [CMA]). The embossed polymer sheet may be polyvinyl butyral.
摘要:
The invention relates to a one-step method for producing laminated safety glass panes. Said laminated safety glass panes consists of at least two glass panes and a plasticized, partially acetalized polyvinyl alcohol interlayer. According to the non-autoclave method, a plasticized, partially acetalized polyvinyl alcohol film with a roughness Rz between 70 νm and 150 νm is used.