| (19) |
 |
|
(11) |
EP 0 969 078 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
23.02.2000 Bulletin 2000/08 |
| (43) |
Date of publication A2: |
|
05.01.2000 Bulletin 2000/01 |
| (22) |
Date of filing: 08.07.1993 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE DE ES FR GB GR IT SE |
| (30) |
Priority: |
08.07.1992 US 910483
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
93916982.7 / 0649458 |
| (71) |
Applicant: HENKEL CORPORATION |
|
Plymouth Meeting, PA 19462 (US) |
|
| (72) |
Inventor: |
|
- The designation of the inventor has not yet been filed
()
|
| (74) |
Representative: Sanderson, Laurence Andrew et al |
|
SANDERSON & CO. 34, East Stockwell Street
Colchester Essex CO1 1ST
Colchester Essex CO1 1ST (GB) |
|
| |
|
| (54) |
Process for treating formed metal surfaces |
(57) A process for treating an aluminium can, comprising the steps of cleaning with an
aqueous acidic or alkaline solution, drying and subsequently conveying the cleaned
and dried can via automatic conveying equipment to a location where it is lacquered
or decorated by printing or both. At least one exterior surface of the can, prior
to the last drying of the surface before automatic conveying, is contacted with a
lubricant and surface conditioner forming composition comprising ethoxylated, hydrogenated
castor oil triglycerides, and the can is then dried without subsequent rinsing, thereby
forming a film on the can to provide the surface of the can after drying with a reduced
coefficient of static friction compared to an otherwise identical sequence of treatments
where the lubricant and surface conditioner forming composition is substituted with
water.