초록 ▼

This invention relates to the use of a single "hold-out" coating layer including a colloidal copolymer applied by the paper machine on the press-applied barrier side of a paperboard substrate. Such structures of this type, generally, allow paper machine with only one coater on the barrier side to ap

This invention relates to the use of a single "hold-out" coating layer including a colloidal copolymer applied by the paper machine on the press-applied barrier side of a paperboard substrate. Such structures of this type, generally, allow paper machine with only one coater on the barrier side to apply a sufficient coating for the desired hold-out.

대표청구항 ▼

[ What is claimed is:] [1.] A composite structure for paperboard packaging for increasing hold-out, wherein said structure is consisting essentially of:a first layer of particulate minerals;a paperboard layer located interior to said first layer of particulate minerals;a second layer of particulate

[ What is claimed is:] [1.] A composite structure for paperboard packaging for increasing hold-out, wherein said structure is consisting essentially of:a first layer of particulate minerals;a paperboard layer located interior to said first layer of particulate minerals;a second layer of particulate minerals including a binder comprised of polyvinyl acetate and a colloidal copolymer for increasing hold-out located interior to said paperboard layer wherein said colloidal copolymer is further comprised of a styrene-butadiene resin , said binder includes up to 50% by weight of said colloidal copolymer, and wherein said second layer is applied with a coat weight of 5 to 9 pounds per ream and applied by a paper machine; anda press-applied barrier layer located interior to said second layer of particulate minerals.