Multilayer, co-extruded, ionomeric decorative surfacing
AssigneeE. I. Du Pont de Nemours and Company
InventorsRandall Allen Vogel, I Hwa Lee, Sumita Sanjeevi Ranganathan
Life of this patent
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Abstract
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.
Claims53
A multilayer film or sheet comprising:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric layer selected from the group consisting of ionomer, ionomer-polyethylene blend, and ionomer-polyamide blend in contact with said first co-extruded polymeric layer.
A multilayer film or sheet comprising:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric layer consisting essentially of very low density polyethylene in contact with said first co-extruded polymeric layer.
A multilayer film or sheet comprising:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric sheet layer consisting essentially of ethylene polar copolymer in contact with said first co-extruded polymeric layer.
A multilayer film or sheet comprising:
- a.) a first co-extrusion polymeric layer consisting essentially of ionomer-polyamide blend;
- and
- b.) at least one additional co-extruded second polymeric layer in contact with said first co-extrude polymeric layer.
A process for making shaped article having an ionomer or ionomer-polyamide blend as a top surface comprising the steps of:
- c.) positioning a monolayer sheet of ionomer or ionomer-polyamide blend or a multilayer co-extruded sheet into a mold, wherein the thickness of said monolayer sheet or said multilayer sheet is from 8 to 60 mils and wherein said multilayer sheet comprises;
- i.) a first co-extruded polymeric layer selected from the group consisting of ionomer and ionomer-polyamide blend;
- and
- ii.) at least one additional co-extruded second polymeric layer in contact with said first co-extruded polymeric layer;
- and
- d.) injection backfilling said monolayer sheet or multilayer co-extruded sheet with a suitable backfilling material.
A process for making a thermoformed, multilayer, sheet-surfaced article comprising the steps of:
- c.) positioning a multilayer sheet into a mold, wherein the thickness of said multilayer sheet is from 8 to 60 mils and wherein said multilayer sheet comprises;
- i.) a first co-extruded polymeric layer selected from the group consisting of ionomer and ionomer-polyamide blend;
- and
- ii.) at least one additional co-extruded second polymeric layer in contact with said first co-extrude polymeric layer;
- and
- b.) raising the temperature of said sheet sufficiently to soften said multilayer sheet;
- and
- c.) conforming said softened sheet to the contoured surface of a substrate in the mold.
An article consisting essentially of a substrate to which a multilayer film or sheet is adhered, wherein said multilayer film or sheet comprises:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric layer selected from the group consisting of ionomer, ionomer-polyethylene blend, and ionomer-polyamide blend in contact with said first co-extruded polymeric layer.
An article consisting essentially of a substrate to which a multilayer film or sheet is adhered, wherein said multilayer film or sheet comprises:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric layer consisting essentially of very low density polyethylene in contact with said first co-extruded polymeric layer.
An article consisting essentially of a substrate to which a multilayer film or sheet is adhered, wherein said multilayer film or sheet comprises:
- a.) a first co-extruded polymeric layer consisting essentially of ionomer;
- and
- b.) at least one co-extruded second polymeric sheet layer consisting essentially of ethylene polar copolymer in contact with said first co-extruded polymeric layer.
An article consisting essentially of a substrate to which a multilayer film or sheet is adhered, wherein said multilayer film or sheet comprises:
- a.) a first co-extrusion polymeric layer consisting essentially of ionomer-polyamide blend;
- and
- b.) at least one additional co-extruded second polymeric layer in contact with said first co-extrude polymeric layer.
Dependencies are inferred from the claim text.