Abstract: This invention relates to a tubular mold having excellent resistance to stretch. The mold is a "duplex type" flexible tubular mold comprising an outer film laminate comprising:A first film ply of cellophane having a saran film bonded to its outer and inner surfaces;A second film ply of biaxially oriented polypropylene having saran coatings bonded to its outer and inner surfaces, the film ply being bonded to the coated cellophane by an adhesive; andAn inner film laminate comprising a film ply of biaxially oriented polypropylene having a saran coating on both sides.

Abstract: Photopolymerizable ethylenically unsaturated ester compositions useful as coating and printing ink vehicles, and especially pigmented coatings and inks, are stabilized to premature gelation by incorporating therein a small but effective amount of a stabilizing combination of a copper containing compound and a thiocarbamate compound.

Abstract: Paperboard having improved resistance to oils is obtained by incorporating in the pulp suspension before paper formation a mixture of a cationically active material, a fatty acid salt and a bis-perflourosulfonamino alkyl phosphate.

Abstract: A method for making a molded wood products wherein wood particles are admixed with an ammonium salt of a weak acid (e.g., ammonium carbonate) and the salt-wood particle mixture is placed in a mold and compressed or otherwise molded at elevated temperatures (up to 200.degree.C) and pressures (1000 to 10,000 psi).

Abstract: This invention relates to a method for preparing a collagen casing from a collagen source which had been subjected to a rigourous liming for effectively completely liming the hide collagen. The fully limed hide collagen is soaked in a dilute edible acid having a pH below about 5.5 for a time sufficient to reduce the pH in the center of the hide to about 4 - 5.5, and then washing the neutralized hide with water until the pH of the supernatant after a 20 minute exposure with the hide, is within about 0.2 pH units of that of the incoming water. The hide is then ground and formed into a collagen slurry and processed in conventional manner into edible collagen casings.

Abstract: A laminated film suitable as a food packaging film comprised of a base layer of an oriented polypropylene film, a layer of a vinylidene chloride polymer adhered to one surface of the base layer, a layer of first ethylene/vinyl acetate copolymer having a vinyl acetate content greater than 10 percent by weight adhered to the vinylidene chloride polymer layer and a top layer of a second ethylene/vinyl acetate copolymer having a vinyl acetate content less than 10 percent adhered to the first ethylene/vinyl acetate copolymer layer.BACKGROUND OF THE INVENTION1. Field of the InventionThis application is a continuation-in-part of copending application Ser. No. 81,941 filed Oct. 19, 1970, and now abandoned.This invention relates to an improved packaging film and more particularly relates to a laminated packaging film having low permeability to gases and a method for the preparation thereof.2.

Abstract: Pigmented photopolymerizable ethylenically unsaturated ester compositions used as coatings and printing inks are stabilized to premature gelation by incorporating therein a stabilizing amount of a thiocarbamate compound having the formula ##EQU1## OR A METAL CATION HAVING A VALENCE OF 1 TO 3 AND EACH OF R, R.sub.1, R.sub.2, and R.sub.3 (same or different) are hydrogen, aryl, saturated and unsaturated alkyl groups having 1 to 20 carbon atoms, aralkyl or alkaryl groups having 7 to 15 carbon atoms and amino, sulfo-and oxy-substituted alkyl and aryl groups, n is an integer of 1 to 3 and x is an integer from 0 to 1.