Multilayer, co-extruded, ionomeric decorative surfacing
View Patent ↗Decorative ionomeric surfaced film and sheet (e.g., multilayer co-extruded polymer) and articles made therefrom (e.g., automotive panels and parts) exhibiting good weatherability, mar resistance, and surface appearance of a high quality automotive finish (including color, haze, gloss, and DOI) and economical process for making (e.g., co-extrusion) and using (e.g., thermoforming and injection backfilling) the same.
1. A multilayer film or sheet comprising a first layer, a second layer, a third layer; and
optionally a tie layer, a recycled polymer layer, or both wherein
the film or sheet is a thermoformable film or sheet;
the first layer is a surface layer and consists essentially of ionomer and a first additive;
the second layer comprises a first polymer and a second additive and is in contact with the first layer;
the first polymer is ionomer;
the third layer is in contact, directly or through the tie layer, with the second layer, and optionally comprises a third additive;
the third layer is ethylene copolymer, polyolefin, polyester, polyamide, or polyethylene-ionomer blend;
the ethylene copolymer is a copolymer of ethylene and (meth)acrylic acid, (meth)acrylate, alkyl(meth)acrylate, maleic anhydride, or vinyl acetate;
the first additive, the second additive, or the third additive is one or more UV stabilizer, UV absorber, antioxidant, thermal stabilizer, anti-stat additive, processing aid, fiber glass, mineral filler, anti-slip agent, plasticizer, nucleating agent, pigment, dye, flake, or mixtures thereof; and
the tie layer is selected from a blend of polyethylene, ethylene/α-olefin copolymer, and ethylene elastomer; ethylene vinyl acetate; ethylene (meth)acrylate copolymer; ethylene butyl acrylate copolymer; polyethylene terephthalate and polyethylene terephthalate glycol copolymer resins; maleic anhydride modified polypropylene; copolymers containing anhydride grafts; or mixture thereof.
2. The film or sheet of claim 1 further comprising the tie layer and the ethylene copolymer is a polymer of ethylene and a comonomer selected from the group consisting of (meth)acrylic acid, (meth)acrylate, alkyl(meth)acrylate, maleic anhydride, and vinyl acetate.
3. The film or sheet of claim 1 wherein said first layer is clear and said second layer contains pigments, dyes, flakes, or mixtures thereof.
4. The film or sheet of claim 3 wherein the film or sheet has a thickness of from 8 to 60 mils and the ethylene copolymer is selected from the group consisting of ethylene (meth)acrylic acid copolymer, ethylene acrylic acid copolymer, ethylene (meth)acrylate copolymer, ethylene (meth)acrylic acid (meth)acrylate copolymer, ethylene (meth)acrylate maleic anhydride copolymer, ethylene vinyl acetate copolymer, ethylene methyl acrylate copolymer, ethylene acrylate copolymer, and ethylene butyl acrylate copolymer.
5. The film or sheet of claim 1 selected from the group consisting of
ionomer/ionomer/ethylene copolymer;
ionomer/ionomer/very low density polyethylene;
ionomer/ionomer/ethylene acid copolymer;
ionomer/ionomer/ethylene copolymer/polyethylene;
ionomer/ionomer/ethylene copolymer/polyester copolymer;
ionomer/ionomer/polyamide;
ionomer/ionomer/tie layer/thermoplastic polyolefin;
ionomer/ionomer/polyethylene-ionomer blend;
ionomer/ionomer/tie layer/thermoplastic polyolefin;
ionomer/ionomer/tie layer/polyester copolymer; and
ionomer/ionomer/tie layer/recycle layer/tie layer/polyester copolymer.
6. An article consisting essentially of a substrate to which a multilayer film or sheet is adhered, wherein said multilayer film or sheet is as recited in claim 1 .
7. The article of claim 6 wherein the multilayer film or sheet further comprises the tie layer.
8. The article of claim 6 wherein the first layer is clear and the second layer contains pigments, dyes, flakes, or mixtures thereof.
9. The article of claim 8 wherein the film or sheet has a thickness of from 8 to 60 mils.
10. The article of claim 6 wherein the multilayer film or sheet is selected from the group consisting of
ionomer/ionomer/ethylene copolymer;
ionomer/ionomer/very low density polyethylene;
ionomer/ionomer/ethylene acid copolymer;
ionomer/ionomer/ethylene copolymer/polyethylene;
ionomer/ionomer/ethylene copolymer/polyester copolymer;
ionomer/ionomer/polyamide;
ionomer/ionomer/tie layer/thermoplastic polyolefin;
ionomer/ionomer/polyethylene-ionomer blend;
ionomer/ionomer/tie layer/thermoplastic polyolefin;
ionomer/ionomer/tie layer/polyester copolymer; and
ionomer/ionomer/tie layer/recycle layer/tie layer/polyester copolymer.