| 摘要 |
A method of producing decorative web from nonwoven polyester web includes heat setting the web at a temperature between 390 and 410 degrees Farenheit before applying a pigmented, solvent soluble, thermoplastic resin composition to at least one side of the web. The composition can include a polymer solution, which includes a vinyl polymer such as one or both of a polyvinyl chloride homopolymer resin and a polyvinyl chloride acetate copolymer resin, a solvent, plasticizers, heat stabilizers, light stabilizers, pigments and antistats. The composition also preferably may include fillers, soil repellents, and flame retardants. The composition is applied by a knife-over-roll apparatus, a rotogravure printer, or other conventional applicating apparatus. After the composition is applied, the web is passed through a hot air oven maintained at a temperature in the range of from about 230 DEG F. to about 330 DEG F. to dry the web of solvent and cure the composition to form solids in the web. The web can be embossed by passing the web through a conventional embossing apparatus that has been specially modified to include a backup roll to the embossing roll wherein the Shore A hardness of the backup roll is at least 90. The web so produced has a basis weight in the range of from about 3.5 ounces per square yard to about 15 ounces per square yard and includes cured composition solids which include a polyvinyl chloride/vinyl acetate copolymer resin, a polyvinyl chloride resin, plasticizers, stabilizers, antistats, and pigments. Applying standard commercial acceptance tests for louver material, the maximum shrinkage was 1/16'', maximum stretch was 1/16'', the maximum twist was 5 degrees, lightfastness was at least 200 hours, and no waviness, cupping, crocking or unacceptable mottling was observed.
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