摘要:
The present invention relates to a release liner composition in which the adhesion of silicone has been improved between a silicone coating and a surface treating layer and so silicone rub-off prevented. The improvement of adhesion is based on a polymeric surface treating agent structure comprising a moiety or moieties that are compatible with a substrate and/or a coating on the surface of the substrate, and a moiety or moieties that are reactive or at least compatible with the silicone coating. The present invention also relates to a base material and a method of producing a base material, and a surface treating agent for a base material and a use of a surface treating agent.
摘要:
The invention relates to a method for producing a sheet of tracing paper having a darkness index of less than 40 % measured in accordance with ISO 2469, in which a paper pulp based on virgin cellulose fibres in aqueous suspension is subjected to the action of a cellulase-based enzyme product for a pre-determined period of time prior to the mechanical refining thereof.
摘要:
In a method for manufacturing base paper for release paper (R), the body layer (1a), which is formed of a fibre raw material, is surface sized with a surface treatment agent. Before the surface sizing, the body layer (1a), whose moisture level is at least 15 wt %, is calendered in a calender that comprises at least one nip formed between a hard-faced roll and a soft counter surface.
摘要:
The invention relates to highly refined papers which can be given a velvet roughness by appropriate interventive modification to the paper machine. In measurement technology, said roughness describes a surface roughness greater than 20 mu m. The modifications to the paper machine involve raising at least one calender-roll, slackening the draw in the dryer section and using special coarse felts for creating a suitable marking.
摘要:
The invention teaches a novel paper substrate having a transparent field of a dense array of a plurality of laser-formed microperforations. The resultant paper can be useful as a replacement for glassine paper, and can be useful in secure documents. The transparent field is integral to the paper substrate and can be formed by laser techniques surprisingly resulting in a transparent field retaining acceptable strength characteristics after lasing. The transparent field acts as a self authentication device.
摘要:
L'invention concerne un procédé de fabrication d'une feuille de papier calque ayant un indice d'opacité inférieur à 40 %, mesure faite selon la norme ISO 2469, procédé dans lequel une pâte papetière à base de fibres cellulosiques vierges en suspension aqueuse est soumise à l'action d'une préparation enzymatique à base de cellulases pendant un temps déterminé et ce avant son raffinage mécanique.
摘要:
A transparent paper consisting of at least one transparent layer composed of densely packed, finely ground fibres which contain transparency-reducing filling materials.
摘要:
The invention concerns a method for treating a cellulosic support to reduce the penetration of anti-adhesive agent into the support and/or to diminish its sensitivity to water. Said method consists in contacting the cellulosic support with an aqueous emulsion based on a grafted functionalised polyorganosiloxane, wherein said emulsion further contains an acrylic-type polymeric material, said polymeric material advantageously containing a styrene fraction.