Patent ID: 9718090
Date: 2017-08-01
CPC Classifications: B05D,B28B,B32B,F16L,Y10T

Claim:
1. A method for preparing a rotolined article comprising: providing a metallic hollow article comprising an iron containing alloy to be lined as a mold; feeding an additional layer material into the mold to obtain a filled mold, wherein the additional layer material is selected from a group consisting of polyamide (PA), ethylene vinyl alcohol (EVOH), polypropylene (PP), polyethylene (PE), and combinations thereof; placing the filled mold into a pre-heated oven; rotating the filled mold about two perpendicular axes; feeding an inner skin layer composition into the mold to obtain a filled mold, wherein the inner skin layer composition comprises a polyethylene-based resin consisting of a metallocene-produced homopolymer of ethylene, a metallocene-produced copolymer of ethylene, or mixtures thereof, in amounts ranging from 70 to 99.5 wt % based on a total weight of the inner skin layer composition; and a material selected from a group consisting of a functionalized polyolefin (FPO), an ionomer, a polyolefin (PO) grafted to a non-polyolefin (NPO) in the form of a block copolymer (PO)g-(NPO), and combinations thereof, in amounts ranging from 0.5 to 30 wt % based on the total weight of the inner skin layer; placing the filled mold into a pre-heated oven; rotating the filled mold about two perpendicular axes; cooling the mold; and retrieving the rotolined article, wherein the metallic hollow article forms an outer skin layer of the rotolined article, wherein the inner skin layer composition forms an inner skin layer of the rotolined article, wherein the additional layer material forms at least one additional layer of the rotolined article, wherein the at least one additional layer comprises a first additional layer that is positioned between the outer skin layer and the inner skin layer, and wherein the first additional layer is applied directly to the outer skin layer and the inner skin layer.