Process for forming a coating layer on a base support, optionally in the form of a coating pattern
OwnerGerardus Johannes Crommentuyn, Hendrik Wieringainventors
Life of this patent
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Abstract
A process for applying a uniform coating layer optionally image-wise, to a base support, which includes the steps of forming on a soft elastomer surface a substantially monograin layer of thermoplastic powder, heating the powder to make it tacky, transferring the powder under pressure to a base support, and heating the base support to a temperature until a uniform layer flows out over the base support. The powder used contains a cross-linkable polyester resin having a number-averaged molecular weight between 2,000 and 10,000.
Claims25
A process for applying a thin, uniform coating layer to a base support which comprises:
- depositing a powder containing a meltable resin in a thin, substantially monogram layer on a soft elastomeric surface;
- heating the powder present on the elastomeric surface to render it tacky;
- transferring the tacky powder by pressure to a final base support;
- heating the tacky powder to a temperature at which the powder flows into a uniform layer over the support, wherein the powder contains a cross-linkable polyester resin which has a number-averaged molecular weight of between about 2000 and 10,000;
- and
- after the formation of the uniform layer, the resin is cross-linked.
A composite comprising a thin, cohesive layer permanently connected to a base support, said layer containing a cross-linked polyester resin binder having a number-averaged molecular weight of about 2000 to 10,000.
A method for coating a mask for use as a CRT-shadow mask which comprises,
- forming a toner layer on a first member by imparting an electrical charge area on said first member and depositing a resin-toner layer on said charge area,
- transferring said toner layer to a soft elastomeric surface layer with the application of pressure between said first member and said elastomeric surface layer,
- heating the toner layer on the elastomeric surface layer to render it tacky,
- transferring the tacky powder by pressure to a shadow mask base support, and
- heating the toner on said shadow mask base support to a temperature of at least 300° C. for a period of time sufficient to at least partially carbonize the resin in said toner.
Dependencies are inferred from the claim text.