Dehnbare Folie und Mehrschichtiger Körper damit

Details

Veröffentlichungs-Nr.

EP4714634

Anmeldetag

16. Mai 2024

Veröffentlichung

28. November 2024

Rechtsraum

EP

Abstract

To provide a stretchable film that can be stretched and used without a reduction in the function of the film itself or the layers formed on the film. A stretchable film having an uneven shape on at least one surface, wherein a tensile elongation at break in a first direction in a plane of the film is more than 20%, the tensile elongation at break in a second direction perpendicular to the first direction is more than 20%, and when a 0.44 mm square area is observed using a white light interference microscope, and a surface roughness measured before stretch is defined as Sa(0), the surface roughness measured after 20% stretch in the first direction is defined as Sa<1>(20), and the surface roughness measured after 20% stretch in the second direction is defined as Sa<2>(20), a rate of change in surface roughness in the first direction, ΔSa<1>, is -15.0% or less, and the rate of change in surface roughness in the second direction, ΔSa<2>, is -15.0% or less.

Anmelder

Firma

Dai Nippon Printing Co., Ltd.

Land

🇯🇵 Japan