Non-stick polymer coated aluminum foil
AssigneeReynolds Metals Company
InventorBruce Robbins
Life of this patent
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Abstract
A non-stick polymer coated aluminum foil and method of making it. The polymer coating composition comprises a silicone resin, a silicone release agent, a silicone curing agent, a hindered phenol antioxidant and a solvent. The method of making the non-stick polymer coated aluminum foil includes applying the polymer coating composition on at least a portion of one side of the aluminum foil and partially curing the coating composition to allow handling and future processing of the coated aluminum foil without blocking of the coating composition. The curing of the coating composition is completed by heating the coated aluminum foil in bulk.
Claims33
A non-stick, coating composition comprising:
- a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes and hydroxyl functional silicone resins;
- a silicone resin curing agent;
- a silicone release agent;
- a solvent;
- and
- an effective amount of a hindered phenol antioxidant.
A non-stick, polymer coated aluminum foil comprising:
- an aluminum foil;
- and
- a non-stick, polymer coating bonded on at least a portion of one side of the aluminum foil wherein said polymer coating comprises a non-stick, coating composition comprising,
- a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes, and hydroxyl functional silicone resins;
- a silicone release agent;
- and
- a hindered phenol antioxidant.
A method of making a coated aluminum foil comprising:
- applying a curable coating composition on at least a portion of one side of an aluminum foil to form a coated aluminum foil;
- and
- partially curing the coating in a first heating step by heating the coated aluminum foil at a sufficiently high temperature to allow completion of the curing of the coated aluminum foil in bulk without blocking.
A method of making a non-stick, coated aluminum foil comprising:
- applying a curable coating composition on at least a portion of one side of an aluminum foil;
- partially curing the forms coating composition sufficiently to allow winding the coated aluminum foil in a coil without blocking of the coating composition;
- and
- completing the curing of the coating composition by heating the aluminum foil in coil form.
Dependencies are inferred from the claim text.