WO2003089166A1 - Method for inhibiting delamination of a polymeric coating from a container body - Google Patents
Method for inhibiting delamination of a polymeric coating from a container body Download PDFInfo
- Publication number
- WO2003089166A1 WO2003089166A1 PCT/US2003/012402 US0312402W WO03089166A1 WO 2003089166 A1 WO2003089166 A1 WO 2003089166A1 US 0312402 W US0312402 W US 0312402W WO 03089166 A1 WO03089166 A1 WO 03089166A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyethylene
- copolymers
- thermoplastic polymer
- container
- terphthalate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000576 coating method Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 title claims abstract description 12
- 230000032798 delamination Effects 0.000 title claims description 14
- 230000002401 inhibitory effect Effects 0.000 title description 2
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract 3
- -1 polyethylene terephthalate Polymers 0.000 claims description 31
- 239000004698 Polyethylene Substances 0.000 claims description 22
- 229920000573 polyethylene Polymers 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 229920001519 homopolymer Polymers 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000515 polycarbonate Polymers 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 3
- 235000013361 beverage Nutrition 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/717—Cans, tins
Definitions
- the present invention relates to processes for making containers for food and beverages. More specifically, the invention relates to a method of inhibiting delamination of thermoplastic polymeric coatings from container bodies during container fabrication.
- Metallic alloy containers such as aluminum alloy containers used for food and beverage storage are commercially shaped by a process in which blanks of aluminum alloy are extrusion coated with thermoplastic polymer, cupped, wall ironed, bottom domed, necked, and then flanged to form a cylindrical container body having an internal polymer lining with an opening at the top of the cylinder.
- Ends for beverage containers are discs that have been stamped from aluminum alloy sheets coated with polymer.
- the discs have contoured shapes to facilitate attachment to container bodies and opening means such as pull tabs to allow the container contents to be emptied from the assembled containers.
- the adhesion of the extruded thermoplastic polymer coating to the container body surface can be reduced by the drawing and ironing stages of body formation.
- the loss of adhesion can result in delamination of the polymer from the container body thus rendering the body unsuitable for use as a food and beverage container.
- High delamination rates waste materials, time and effort, thereby increasing costs to the container manufacturer.
- One of the objectives of this invention is to provide a method to inhibit delamination of extruded thermoplastic polymers from container bodies during container body formation.
- the invention provides a method to inhibit delamination of an extruded thermoplastic polymer coating from a container body.
- the method comprises inductively heating the open end of a container body, prior to affixing the can end to the body, to adhere the polymer to the container.
- the invention also provides a method of making a container body that comprises forming a cylindrical body having an exterior surface, an interior surface and an edge defining an orifice.
- the body interior surface is coated with a polymeric liner and the body exterior surface may optionally be decorated.
- the container body edge near the orifice is inductively heated and an end is joined to the body to form a completed container.
- the invention inhibits delamination of extruded thermoplastic polymer coatings from container bodies as a result of container formation operations.
- the invention provides a method for making a container suitable for use as a beverage and food container.
- the container body may comprise an aluminum alloy, steel, aluminum alloy-coated steel, or aluminum-coated steel.
- Aluminum alloy is particularly preferred for use in this invention.
- Aluminum alloys suitable for shaping into container bodies include aluminum-manganese alloys of the AA3000 series and aluminum-magnesium alloys of the AA5000 series.
- thermoplastic polymer for example, by the methods described in U.S. Patent 5,407,702 and U.S. Patent 5,919,517.
- Suitable polymer coatings for use in this invention are polyesters such as polyethylene terephthalate, polyethylene terpthalate copolymers, blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers, and polyolef ⁇ ns such polypropylene, polyethylene, and in particular polypropylene copolymers.
- Polyamides (nylon), polyimides, polycarbonates and polyvinyl chlorides are also suitable for use in this inventioij .
- the preferred thermoplastic polymers are blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers. Suitable blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers. These polyester resins are available commercially as Melinar 5122C and Crystar 4462 from DuPont Inc. of Wilmington Delaware.
- Polymeric interior coatings are applied to container bodies to improve preservation and taste characteristics of the food and beverages that are stored in the containers.
- the polymer coating may also optionally contain additives such as dyes, pigment particles, anticorrosion agents, antioxidants, adhesion promoters, light stabilizers, lubricants, and mixtures thereof.
- the coated blanks are cupped, wall ironed, bottom domed, necked, and then flanged to form a cylindrical container body having an internal polymer lining with an opening at the top of the cylinder.
- the polymer coating is stretched along body interior surface and can separate from the body. Such delamination typically occurs near the opening at the top of the cylindrical body.
- the preferred means of heating the container open end is by induction. Induction heating is performed by placing the open end of the container body within an inductor coil and passing alternating electric currents through the coil. The energized coil causes the container, and the thermoplastic polymer on the container body, to experience eddy currents which in turn cause the metal and polymer to heat. Heating causes the polymer to flow into the microsurface imperfections in the can body interior surface, adhering the polymer to body.
- Heating by induction has several advantages.
- the heating operation is relatively fast, since heat is induced directly within the metal and polymer within the coil as opposed to heating by radiant energy.
- Induction heating is also localized to only the portion of the container body and the polymer adjacent to the coil since only the areas of the container body within the induction coils' electromagnetic field experience heating. Preventing the entire container body from heating is important to prevent undesirable tempering and polymer delaminating effects within the metal portions of the container.
- the container may be filled with a product and an end may be attached to the body to seal the container.
- the invention thus provides a method to inhibit delamination of an extruded thermoplastic polymer coating from a container body.
- the method does not cause undesirable tempering and polymer delaminating effects within the metal portions of the container and reduces wasted materials,* time and effort, caused by high delamination rates due to container body manufacturing processes.
Abstract
A method to inhibit separation of an extruded thermoplastic polymer coating from a metallic alloy container body due to body forming operations. The container body and the extruded thermoplastic polymer coating are inductively heated causing the polymer to flow into the microsurface irregularities on the body interior surface which adheres the polymer to the body.
Description
METHOD FOR INHIBITrNG DELAMINATION OF A POLYMERIC COATING
FROM A CONTAINER BODY
The present invention relates to processes for making containers for food and beverages. More specifically, the invention relates to a method of inhibiting delamination of thermoplastic polymeric coatings from container bodies during container fabrication.
Metallic alloy containers such as aluminum alloy containers used for food and beverage storage are commercially shaped by a process in which blanks of aluminum alloy are extrusion coated with thermoplastic polymer, cupped, wall ironed, bottom domed, necked, and then flanged to form a cylindrical container body having an internal polymer lining with an opening at the top of the cylinder.
An aluminum alloy lid or "end" is then attached to the cylindrical body, covering the opening in the cylindrical body, to seal the container. Ends for beverage containers are discs that have been stamped from aluminum alloy sheets coated with polymer. The discs have contoured shapes to facilitate attachment to container bodies and opening means such as pull tabs to allow the container contents to be emptied from the assembled containers.
The adhesion of the extruded thermoplastic polymer coating to the container body surface can be reduced by the drawing and ironing stages of body formation. The loss of adhesion can result in delamination of the polymer from the container body thus rendering the body unsuitable for use as a food and beverage container. High delamination rates waste materials, time and effort, thereby increasing costs to the container manufacturer.
Thus a need exists for a method to inhibit delamination of extruded thermoplastic polymers from container bodies during container body formation.
One of the objectives of this invention is to provide a method to inhibit delamination of extruded thermoplastic polymers from container bodies during container body formation.
Additional objectives and advantages of our invention will become apparent to persons skilled in the art from the following detailed description of the invention.
The invention provides a method to inhibit delamination of an extruded
thermoplastic polymer coating from a container body. The method comprises inductively heating the open end of a container body, prior to affixing the can end to the body, to adhere the polymer to the container.
The invention also provides a method of making a container body that comprises forming a cylindrical body having an exterior surface, an interior surface and an edge defining an orifice. The body interior surface is coated with a polymeric liner and the body exterior surface may optionally be decorated. The container body edge near the orifice is inductively heated and an end is joined to the body to form a completed container.
The invention inhibits delamination of extruded thermoplastic polymer coatings from container bodies as a result of container formation operations.
The invention provides a method for making a container suitable for use as a beverage and food container. The container body may comprise an aluminum alloy, steel, aluminum alloy-coated steel, or aluminum-coated steel. Aluminum alloy is particularly preferred for use in this invention. Aluminum alloys suitable for shaping into container bodies include aluminum-manganese alloys of the AA3000 series and aluminum-magnesium alloys of the AA5000 series.
To form a container body, aluminum alloy blanks are preferably extrusion coated with a thermoplastic polymer for example, by the methods described in U.S. Patent 5,407,702 and U.S. Patent 5,919,517. Suitable polymer coatings for use in this invention are polyesters such as polyethylene terephthalate, polyethylene terpthalate copolymers, blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers, and polyolefϊns such polypropylene, polyethylene, and in particular polypropylene copolymers. Polyamides (nylon), polyimides, polycarbonates and polyvinyl chlorides are also suitable for use in this inventioij . The preferred thermoplastic polymers are blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers. Suitable blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers. These polyester resins are available commercially as Melinar 5122C and Crystar 4462 from DuPont Inc. of Wilmington Delaware.
Polymeric interior coatings are applied to container bodies to improve preservation and taste characteristics of the food and beverages that are stored in the
containers. The polymer coating may also optionally contain additives such as dyes, pigment particles, anticorrosion agents, antioxidants, adhesion promoters, light stabilizers, lubricants, and mixtures thereof.
The coated blanks are cupped, wall ironed, bottom domed, necked, and then flanged to form a cylindrical container body having an internal polymer lining with an opening at the top of the cylinder.
During the body forming process, the polymer coating is stretched along body interior surface and can separate from the body. Such delamination typically occurs near the opening at the top of the cylindrical body.
To inhibit the extruded polymer form separating from the container body the inventors have discovered that heating of the container near the open end adheres the polymer to the container, thus reducing the occurrence of delamination resulting from body formation.
However, heating of an entire container body is undesirable due to reduction in the metallurgical properties of the metal alloy body. The preferred means of heating the container open end is by induction. Induction heating is performed by placing the open end of the container body within an inductor coil and passing alternating electric currents through the coil. The energized coil causes the container, and the thermoplastic polymer on the container body, to experience eddy currents which in turn cause the metal and polymer to heat. Heating causes the polymer to flow into the microsurface imperfections in the can body interior surface, adhering the polymer to body.
Heating by induction has several advantages. The heating operation is relatively fast, since heat is induced directly within the metal and polymer within the coil as opposed to heating by radiant energy. Induction heating is also localized to only the portion of the container body and the polymer adjacent to the coil since only the areas of the container body within the induction coils' electromagnetic field experience heating. Preventing the entire container body from heating is important to prevent undesirable tempering and polymer delaminating effects within the metal portions of the container.
After induction heating, the container may be filled with a product and an end may be attached to the body to seal the container.
The invention thus provides a method to inhibit delamination of an extruded thermoplastic polymer coating from a container body. The method does not
cause undesirable tempering and polymer delaminating effects within the metal portions of the container and reduces wasted materials,* time and effort, caused by high delamination rates due to container body manufacturing processes.
The foregoing disclosure of our invention has been made with reference to some particularly preferred embodiments. Persons skilled in the art will understand that numerous changes and modifications can be made without departing from the spirit and scope of the following claims.
Claims
1. A method to inhibit separation of an extruded thermoplastic polymer coating from a container body, said method comprising inductively heating the container body to adhere said extruded thermoplastic polymer coating to said body.
2. The method of claim 1 , wherein said thermoplastic polymer is a polyester or polyolefm.
3. The method of claim 1, wherein said thermoplastic polymer is selected from the group consisting of polyethylene terephthalate, polyethylene terpthalate copolymers, blends of polyethylene terphthalate homopolymers with polyethylene, terphthalate copolymers, polypropylene, polyethylene, polypropylene copolymers; polyamides, polyimides, polycarbonates and polyvinyl chlorides.
4. The method of claim 1, wherein said thermoplastic polymer is selected from the group consisting of blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers.
5. A method of making a container comprising:
(a) forming a cylindrical body having an exterior surface, an interior surface and an edge defining an orifice, said body interior surface coated with an extruded thermoplastic polymer liner, and said body exterior surface optionally decorated and;
(b) inductively heating said body adjacent to said orifice to inhibit separation of said polymer from said body; and
(c) attaching a container end to said body.
6. The method of claim 5, wherein said thermoplastic polymer is a polyester or polyolefm.
7. The method of claim 5, wherein said thermoplastic polymer is selected from the group consisting of polyethylene terephthalate, polyethylene terpthalate copolymers, blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers, polypropylene, polyethylene, polypropylene copolymers; polyamides, polyimides, polycarbonates and polyvinyl chlorides.
8. A container comprising an aluminum alloy body and an aluminum alloy end, said container body having an interior surface coated with an extruded thermoplastic polymeric coating inhibited from delamination by inductive thermal adherence of said polymer to said body.
9. The method of claim 8, wherein said thermoplastic polymer is a polyester or polyolefϊn.
10. The method of claim 8, wherein said thermoplastic polymer is selected from the group consisting of polyethylene terephthalate, polyethylene terpthalate copolymers, blends of polyethylene terphthalate homopolymers with polyethylene terphthalate copolymers, polypropylene, polyethylene, polypropylene copolymers; polyamides, polyimides, polycarbonates and polyvinyl chlorides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003231029A AU2003231029A1 (en) | 2002-04-22 | 2003-04-21 | Method for inhibiting delamination of a polymeric coating from a container body |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/127,314 US20030198537A1 (en) | 2002-04-22 | 2002-04-22 | Method for inhibiting delamination of a polymeric coating from a container body |
| US10/127,314 | 2002-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003089166A1 true WO2003089166A1 (en) | 2003-10-30 |
Family
ID=29215232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2003/012402 WO2003089166A1 (en) | 2002-04-22 | 2003-04-21 | Method for inhibiting delamination of a polymeric coating from a container body |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20030198537A1 (en) |
| AU (1) | AU2003231029A1 (en) |
| WO (1) | WO2003089166A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2004308665A1 (en) * | 2003-12-23 | 2005-07-14 | Corus Staal Bv | Organic acid resistance improvement in polymer coated metals |
| US9650205B2 (en) * | 2013-06-14 | 2017-05-16 | S. C. Johnson & Son, Inc. | Chelating system for a polymer lined steel container |
| US11508495B2 (en) * | 2017-12-14 | 2022-11-22 | Schneider Electric USA, Inc. | Method of preparing epoxy coated bus bars for use in electrical distribution equipment |
| US20200406591A1 (en) * | 2018-02-27 | 2020-12-31 | Cryovac, Llc | Sealable and easy opening polyester films |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0062385A2 (en) * | 1981-04-02 | 1982-10-13 | The Dow Chemical Company | Food or beverage cans made from plastic coated steel sheet |
| JPH01299727A (en) * | 1988-05-25 | 1989-12-04 | Toyo Seikan Kaisha Ltd | Method and apparatus for heating mouth end part of seamless can body |
| JPH0970630A (en) * | 1995-09-07 | 1997-03-18 | Nippon Steel Corp | Method and device for heating mouth end part of can |
| US5919517A (en) * | 1993-05-05 | 1999-07-06 | Aluminum Company Of America | Method for coating a metal strip |
| DE19902045A1 (en) * | 1998-01-27 | 1999-08-05 | Rasselstein Hoesch Gmbh | Making deep-drawn drinks cans of tin plate coated with polyethylene terephthalate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1475485A (en) * | 1975-01-06 | 1977-06-01 | Nihon Seikan Kk | Apparatus for heating joints or seams of containers |
| US4220106A (en) * | 1978-08-15 | 1980-09-02 | Schmalbach-Lubeca Gmbh | Process and apparatus for annealing can bodies |
| US4366662A (en) * | 1979-06-30 | 1983-01-04 | Toyo Seikan Kaisha, Ltd. | Process for preparation of cans and canned provisions |
| US4372719A (en) * | 1981-01-21 | 1983-02-08 | The Continental Group, Inc. | Annealing of end rim |
| US4450977A (en) * | 1981-04-02 | 1984-05-29 | The Dow Chemical Company | Manufacture of draw-redraw cans using film laminated or extrusion coated steel sheet material |
| TW252961B (en) * | 1994-02-15 | 1995-08-01 | Toyo Seikan Kaisha Ltd | Method of producing seamless cans |
| US6349586B1 (en) * | 1999-02-23 | 2002-02-26 | Ball Corporation | Apparatus and method for annealing container side wall edge for necking |
-
2002
- 2002-04-22 US US10/127,314 patent/US20030198537A1/en not_active Abandoned
-
2003
- 2003-04-21 WO PCT/US2003/012402 patent/WO2003089166A1/en not_active Application Discontinuation
- 2003-04-21 AU AU2003231029A patent/AU2003231029A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0062385A2 (en) * | 1981-04-02 | 1982-10-13 | The Dow Chemical Company | Food or beverage cans made from plastic coated steel sheet |
| JPH01299727A (en) * | 1988-05-25 | 1989-12-04 | Toyo Seikan Kaisha Ltd | Method and apparatus for heating mouth end part of seamless can body |
| US5919517A (en) * | 1993-05-05 | 1999-07-06 | Aluminum Company Of America | Method for coating a metal strip |
| JPH0970630A (en) * | 1995-09-07 | 1997-03-18 | Nippon Steel Corp | Method and device for heating mouth end part of can |
| DE19902045A1 (en) * | 1998-01-27 | 1999-08-05 | Rasselstein Hoesch Gmbh | Making deep-drawn drinks cans of tin plate coated with polyethylene terephthalate |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 087 (M - 0937) 19 February 1990 (1990-02-19) * |
| PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20030198537A1 (en) | 2003-10-23 |
| AU2003231029A1 (en) | 2003-11-03 |
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