US2215143A - Lacquered metal container for foodstuffs - Google Patents
Lacquered metal container for foodstuffs Download PDFInfo
- Publication number
- US2215143A US2215143A US88689A US8868936A US2215143A US 2215143 A US2215143 A US 2215143A US 88689 A US88689 A US 88689A US 8868936 A US8868936 A US 8868936A US 2215143 A US2215143 A US 2215143A
- Authority
- US
- United States
- Prior art keywords
- foodstuffs
- metal container
- metal
- lacquer
- lacquered metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title description 10
- 229910052751 metal Inorganic materials 0.000 title description 10
- 239000004922 lacquer Substances 0.000 description 9
- 239000005028 tinplate Substances 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- OYHQOLUKZRVURQ-HZJYTTRNSA-M 9-cis,12-cis-Octadecadienoate Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC([O-])=O OYHQOLUKZRVURQ-HZJYTTRNSA-M 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical class [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000004426 flaxseed Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229940049918 linoleate Drugs 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S220/00—Receptacles
- Y10S220/917—Corrosion resistant container
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S524/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S524/901—Electrodepositable compositions
Definitions
- The'object of. the present invention is to provide improved means for internally lacquering tin plate containers.
- This invention relates to an improved process and apparatus for treating metal containers especially cans of tin plate.
- a metal container' can be very effectively protected against corrosion by laequering the inside of the said container by depositing the lacquer electrophoretically from a lacquer-emulsion of the oil-in-water type, the deposited film being subsequently stoved if necessary.
- lacquers should be light coloured and otherwise-suitable for contact with foodstuffs, and asphaltic or pitchy emulsions are thus unsuitable.
- a suitable emulsion is made from the usual ingredients employed for lacquerlng food con tainers, e. g.
- the volume of the disperse phase of the emul- 5 sion may be as high as 50% and the current density may vary between wide limits, the higher the current density the greater the rate of deposition.
- the invention When using an aqueous medium which is alkaline or oxidising, the invention has an important advantage in that as a result of the electrical treatment the tinplate gains an anodic protection which is manifested in that the subsequent lacquer film no longer shows evidence of sulphide stains on the plate below.
- certain tinplates covered with the same lacquer in the one instance electro-deposited and in the other with the usual mechanical rolling method, were made into cans and filled with meat rolls. After sterilisation and cooling, the cans wereopened, and whereas the can internally lacquered in the usual way showed marked sulphide staining of the plate beneath, the can lacquered electrically was entirely free from. such stain.
- a container for foodstufis formed from tin plate, said container having the inner tin-coated surface thereof anodically treated to prevent staining, and a coating of transparent lacquer electrophoretically deposited on and covering the inner surface of said container.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Description
Patented Sept. 17,1940
LACQUERED METAL coN'rAmEa FOB FOODSTUFFS William Clayton, London, England, assignor to Crosse and Blackwell Limited, London,-
land, a British company Eng- No Drawing. Application July 2, 1936, Serial No.
. 88,689. In Great Britain July 6, 1935 1 Claim.
The'object of. the present invention is to provide improved means for internally lacquering tin plate containers.
This invention relates to an improved process and apparatus for treating metal containers especially cans of tin plate. I
When food products are preserved in metal containers it is frequently necessary to protect the metal from attack by coating the metal with m a lacquer. This coating is usually applied before the metal sheet is formed into the can and, during the mechanical processes necessary to form the can, the lacquer film is liable to be ruptured, with consequent exposure of the metal and danger of 15 subsequent corrosion. I
According to the present invention I have found that a metal container'can be very effectively protected against corrosion by laequering the inside of the said container by depositing the lacquer electrophoretically from a lacquer-emulsion of the oil-in-water type, the deposited film being subsequently stoved if necessary.
The lacquers should be light coloured and otherwise-suitable for contact with foodstuffs, and asphaltic or pitchy emulsions are thus unsuitable.
A suitable emulsion is made from the usual ingredients employed for lacquerlng food con tainers, e. g.
so Linseed stand oil "175-200 lbs.
Synthetic res 100 lbs. Mn/Co drier (10:1 1 lb. of metal as linoleate i 40 from grease. 'When a tinplate can holding 10 fiuid ounces forms the anode, an initial current of 2 amps. gives an eifectivedeposit in about 5-10 seconds. After discharging the emulsion and washing, the can may be stoved for 30 minutes at 380 F.
The volume of the disperse phase of the emul- 5 sion may be as high as 50% and the current density may vary between wide limits, the higher the current density the greater the rate of deposition.
When using an aqueous medium which is alkaline or oxidising, the invention has an important advantage in that as a result of the electrical treatment the tinplate gains an anodic protection which is manifested in that the subsequent lacquer film no longer shows evidence of sulphide stains on the plate below. For instance, certain tinplates covered with the same lacquer, in the one instance electro-deposited and in the other with the usual mechanical rolling method, were made into cans and filled with meat rolls. After sterilisation and cooling, the cans wereopened, and whereas the can internally lacquered in the usual way showed marked sulphide staining of the plate beneath, the can lacquered electrically was entirely free from. such stain. According to the invention, it is therefore possible to employ a transparent lacquer for meat products and other foods giving on sulphur compounds, in place of the special lacquers hitherto employed containing zinc oxide or other suspended matter.
I, declare that what I claim is:
A container for foodstufis formed from tin plate, said container having the inner tin-coated surface thereof anodically treated to prevent staining, and a coating of transparent lacquer electrophoretically deposited on and covering the inner surface of said container.
CLAYTON. 4o
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2215143X | 1935-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2215143A true US2215143A (en) | 1940-09-17 |
Family
ID=10901406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US88689A Expired - Lifetime US2215143A (en) | 1935-07-06 | 1936-07-02 | Lacquered metal container for foodstuffs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2215143A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2503217A (en) * | 1944-12-15 | 1950-04-04 | Republic Steel Corp | Process for treating brightened electrotinplate |
| US2898279A (en) * | 1956-06-14 | 1959-08-04 | Commw Of Australia | Coating surfaces by employing an electrostatic field |
| US3175964A (en) * | 1960-01-23 | 1965-03-30 | Yawata Iron & Steel Co | Surface treatment of metal article by water-soluble (film-forming) material |
| US4525214A (en) * | 1983-03-11 | 1985-06-25 | The Mazer Corporation | Crayon adapted for development of latent images |
-
1936
- 1936-07-02 US US88689A patent/US2215143A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2503217A (en) * | 1944-12-15 | 1950-04-04 | Republic Steel Corp | Process for treating brightened electrotinplate |
| US2898279A (en) * | 1956-06-14 | 1959-08-04 | Commw Of Australia | Coating surfaces by employing an electrostatic field |
| US3175964A (en) * | 1960-01-23 | 1965-03-30 | Yawata Iron & Steel Co | Surface treatment of metal article by water-soluble (film-forming) material |
| US4525214A (en) * | 1983-03-11 | 1985-06-25 | The Mazer Corporation | Crayon adapted for development of latent images |
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