Granted Patent B2

US 7,189,308 · App. 10/291,810 · Granted Mar 13, 2007

Abstract

Claims (6)

1. An interleaver prepared by applying a water based emulsion to a paper base sheet to provide an impregnated paper product and drying the impregnated paper product to provide an interleaver exhibiting:

(a) a MacBeth brightness according to TAPPI T452 of at least about 83%; a wet tensile strength (CD) according to TAPPI T456 of at least about 2 lb./in.; a wet tensile strength (MD) according to TAPPI T456 of at least 6 lb./in.; a Tear CD-Elmendorf according to TAPPI T-414 of less than about 55 g f ; a Tear MD-Elmendorf according to TAPPI T-414 of less than about 45 g f ; a short span compressive strength (STFI)-CD according to TAPPI T-426 of at least about 10 lb./in.; and a short span compressive strength (STFI)-MD according to TAPPI T-826 of at least about 4 lb./in;

(b) wherein the water based emulsion comprises a barrier and/or release forming component comprises at least one of stearylated melamine, polyethylene wax, parraffin wax, isoparaffin wax, microcrystalline wax, fluoropolymer wax, silicone wax, alkyl ketene materials, octyl succinic anhydride, Werner chrome complex, natural wax, or mixtures thereof;

(c) wherein the interleaver further comprises urea formaldehyde wet strength resin; and

(d) wherein the interleaver is constructed for food contact with aqueous and fatty foods.

2. An interleaver according to claim 1 , wherein the water based emulsion comprises stearylated melamine.

Assignments (14)