Claims
- 1. A method of deep drawing thin metal stock into containers and post-coating said containers including the steps of:
- (a) providing a lubricant composition that conists essentially of a combination of (1) air drying type hydroxylated alkyl silicone resin mixed in an aromatic hydrocarbon solvent and (2) peanut oil or lanolin mixed in an aliphatic hydrocarbon solvent;
- (b) applying said composition to an uncoated or precoated metal substrate in an amount sufficient to form a uniform dispersion of such composition across the substrate surfaces;
- (c) permitting said composition to dry to form a lubricant film over the surfaces of said metal substrate;
- (d) progressively forming by deep drawing the lubricant film covered substrate into a deeply drawn container having a depth which is greater than its width;
- (e) applying a post-coating synthetic resin composition to said deeply drawn container without removing residual lubricant film, and
- (f) subjecting said post-coated deeply drawn container to elevated temperature to form a bonded film on the surfaces of said container.
- 2. A method as claimed in claim 1 wherein said silicone resin is SR-82.
- 3. A method as claimed in claim 2 wherein said aromatic hydrocarbon is toluene.
- 4. A method as claimed in claim 3 wherein said aliphatic hydrocarbon is heptane.
- 5. A method as claimed in claim 4 wherein said composition is a combination of (1) one part silicone resin SR-82 mixed in toluene with (2) four parts lanolin mixed in heptane, admixed in a mixture of heptane and toluene.
- 6. A method as claimed in claim 1 wherein said metal substrate is uncoated prior to step (b) and said composition is a combination of (1) silicone resin SR-82 mixed in toluene to a concentration of 60% solids and (2) lanolin mixed in heptane and wherein the combination is dissolved in a mixture of toluene and heptane.
- 7. The method of claim 1 wherein the aliphatic and aromatic hydrocarbon solvents are present in approximately equal porportions in the composition.
- 8. The method of claim 1 wherein said post-coating composition comprises an epoxy phenolic solvent based coating.
- 9. A method of deep drawing metal stock into containers and post-coating the container comprising the steps of:
- (a) providing a lubricant composition that consists essentially of (1) air drying type hydroxylated alkyl silicone resin mixed in an aromatic hydrocarbon solvent and (2) lanolin mixed in an aliphatic hydrocarbon solvent;
- (b) applying said combination to an uncoated steel substrate in an amount sufficient to form a uniform dispersion of said lubricant composition on said steel substrate surfaces;
- (c) drying said lubricated steel to form a film of said lubricant composition on the surfaces of said steel substrate;
- (d) progressively forming by deep drawing the lubricant film covered substrate into a deeply drawn container having a depth which is greater than its width;
- (e) applying a post-coating composition comprising an epoxy-phenolic or vinyl organosol resin to said deeply drawn container without removing residual lubricant film; and
- (f) subjecting the post-coated deeply drawn container to elevated temperature sufficient to from a bonded film on the metal surfaces of said container.
- 10. The method of claim 9 wherein said lubricant composition consists of (1) silicone resin SR-82 mixed in toluene and (2) lanolin mixed in heptane and wherein said components (1) and (2) are further admixed in a mixture of toluene and heptane.
- 11. The method of claim 10 wherein said steel substrate is electrolytic tinplate.
- 12. A method of deep drawing electrolytic tinplate or TFS-CT steel into containers and post-coating the containers comprising the steps of:
- (a) providing a lubricant composition consisting essentially of the combination of (1) SR-82 air-drying type hydroxylated alkyl silicone resin mixed in toluene and (2) lanolin mixed in heptane, the combination being derived from (i) about one part by volume SR-82 and toluene mixed with (ii) about four parts by volume of liquid lanolin mixed with heptane, the combination being combined in a mixture of toluene and heptane;
- (b) applying said composition to uncoated electrolytic tinplate or precoated TFS-CT steel substrate to form a uniform dispersion of said lubricant composition on said tinplate or TSF-CT steel substrate surfaces;
- (c) air drying said lubricated steel to form a film of said lubricant composition on the surfaces of said tinplate or TFS-CT steel substrate;
- (d) progressively forming by deep drawing the lubricant film covered substrate into a deeply drawn container having a depth which is greater than its width;
- (e) applying a post-coating comprising an epoxy-phenolic or vinyl organosol resin to said deeply drawn container without removing residual lubricant film; and
- (f) subjecting the post-coated deeply drawn container to elevated temperature sufficient to form a bonded film of said epoxy-phenolic or vinyl-organosol resin on the surfaces of said container.
- 13. A method as claimed in claim 12 wherein said lubricant composition is derived by admixing (1) SR-82 silicone resin mixed in toluene to a concentration of about 60% solids with (2) liquid lanolin in heptane with (3) a mixture of heptane and toluene to give a final solution comprising approximately 3.68% to 4.5% solids.
- 14. A method as claimed in claim 13 wherein said lubricant composition is applied at a rate of 15 to 25 mgs. per square foot of tinplate or precoated TFS-CT steel substrate.
- 15. A method of deep drawing electrolytic tinplate or TFS-CT steel into containers and post-coating the containers comprising the steps of:
- (a) providing a lubricant composition consisting essentially of the combination of (1) SR-82 air-drying type hydroxylated alkyl silicone resin mixed in toluene and (2) lanolin mixed in heptane, the combination being derived from (i) about one part by volume SR-82 and toluene mixed with (ii) about four parts by volume of liquid lanolin mixed with heptane, the combination being combined in a mixture of toluene and heptane;
- (b) applying said composition to TFS-CT precoated with an epoxy-vinyl coating composition to form a uniform dispersion of said lubricant composition on said precoated, TFS-CT steel substrate surfaces;
- (c) air drying said lubricated steel to form a film of said lubricant composition on the surfaces of said precoated tinplate or TFS-CT steel substrate;
- (d) progressively forming by deep drawing the lubricant film covered substrate into a deeply drawn container having a depth which is greater than its width;
- (e) applying a post-coating comprising an epoxy-phenolic or vinyl organosol resin to said deply drawn container without removing residual lubricant film; and
- (f) subjecting the post-coated deeply drawn container to elevated temperature sufficient to form a bonded film of said epoxy-phenolic or vinyl-organosol resin on the surfaces of said container.
Parent Case Info
This is a division of application Ser. No. 251,232 filed Apr. 6, 1981, now abandoned, which was a continuation of application Ser. No. 016,371 filed Mar. 1, 1979, now abandoned.
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3110413 |
McKay et al. |
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|
4032678 |
Perfetti et al. |
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4450977 |
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Divisions (1)
|
Number |
Date |
Country |
Parent |
251232 |
Apr 1981 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
016371 |
Mar 1979 |
|