Masking film
AssigneeHyplast N.V.
InventorPatrick Mathilde Corneel Verschaeren
Life of this patent
Estimating the term…
Abstract
The invention relates to a masking film, which may or may not be combined with a substrate, such as paper, for varnishing surface parts. According to the invention the film consists of at least one layer of an absorbent polar material, which material is preferably an engineering polymer. The absorbent material is according to the invention usually a polymer such as are polyamide, polycarbonate, polybuteneterephthalate, polyetheneterephthalate, polyetherblockamide, polyetherblockester, polyurethane etherblockcopolymer, and blends of said polymers with polyolefins, or mixtures thereof. Usually the film according to the invention comprises several layers, i.e. three, five, seven or more.
Claims8
A masking film for varnishing surface parts, wherein the film comprises
- a) at least one layer of an absorbent polar material resistant to a temperature of 160° C. and higher selected from the group consisting of polyamide, polycarbonate, polybuteneterephthalate, polyetheneterephthalate, polyetherblockamide, polyetherblockester, polyurethane etherblockcopolymer, and blends of said polymers with polyolefins, or mixtures thereof;
- and
- b) an extrusion-facilitating layer located at the side of the absorbent layer comprising an acid anhydride-grafted polyolefin or a mixture of an acid anhydride-grafted polyolefin and a polyolefin.
Dependencies are inferred from the claim text.