Armstrong World Industries, Inc.

Armstrong Cork Company

Other

Harry F Long

Lawrence Clark

Donald J Misselhorn

David J Burkey

Jay R George

Michael Tomchany

Walter J Lewicki, Jr

William C Dorsey

Richard M Ringer

Thomas C Creighton

J Stephen Fornadel

The present invention relates to a curtain coating apparatus by which a foamable or foaming material is conveyed from a mixing apparatus through a distributor comprising a plurality of conveying tubes to a curtain coating slot. The apparatus comprises homogenization means for agitating the mixture such that the merging streams of foamable or foaming material are intermixed so as to provide a substantially uniform material which emerges from the curtain coating slot.

Curtain coating method

Curtain coating apparatus and method of use

A stress-free embossed, ornamented surface covering, suitable for use as a floor or wall tile, is made by: providing a decorated resinous film on a release carrier, with the decorated surface of the film facing away from the carrier; providing on a release carrier a pre-formed, low-density, reinforced, porous thermoplastic base material, which may include hollow, non-thermoplastic particles; interfacing the decorated surface of the film with the top surface of the base material; perforating the film, after removal of the release carriers; and, subjecting the structure to high frequency electrical energy and pressure in a flatbed press having a cooled embossing plate and a cooled back-up plate, to emboss the structure, fuse the resins and render the film substantially impermeable. The film may be die cut in register with the decoration thereon while it is on the release carrier, without cutting the carrier, prior to lamination of the film to similarly cut and shaped pieces of the base material or, the base material and the decorated film thereon may be simultaneously cut in register with the decoration after removal of the release carriers. An adhesive coating and a releasable paper may be applied to the back of the product to facilitate installation thereof on a surface upon removal of the paper.

Stress-free, embossed, ornamented tile surface covering and process for

The present invention concerns our discovery that aqueous cellulosic slurries comprising primary binder, newsprint, sulfite pulp, and vegetable shell flour can be prepared and formed as desired into various configurations. The materials thus formed are usable for a variety of purposes including furniture, paneling and flooring structures.

Formable pulp compositions

The invention is directed to an electroforming mandrel of a specific structure which is used for making an electroformed product. The invention also embodies a method for producing an embossing surface.

Electroforming mandrel

Method of making an electroforming mandrel

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Lancaster, PA, United States of America

Harry F Long