CN102528401A - Food tin can production process - Google Patents
Food tin can production process Download PDFInfo
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- CN102528401A CN102528401A CN2012100445345A CN201210044534A CN102528401A CN 102528401 A CN102528401 A CN 102528401A CN 2012100445345 A CN2012100445345 A CN 2012100445345A CN 201210044534 A CN201210044534 A CN 201210044534A CN 102528401 A CN102528401 A CN 102528401A
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- canned food
- food box
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Abstract
The invention discloses a food tin can production process which comprises the following steps of: treating a 5052 aluminum alloy strip through five passes rolling (2.3 mm, 1.3 mm, 0.8 mm, 0.5 mm, 0.30 mm and 0.22 mm) to form a first prefabricated part; annealing the first prefabricated part to form a second prefabricated part; drawing and correcting the second prefabricated part to form a third prefabricated part; coating the third prefabricated part to form a fourth prefabricated part, cutting the fourth prefabricated part and waxing to obtain a fifth prefabricated part; and molding the fifth prefabricated part to form a finished product of a food tin can. Accordingly, the food tin can production process disclosed by the invention can effectively improve the production quality of food tin cans.
Description
Technical field
The present invention relates to food package box manufacturing technology field, particularly a kind of canned food box production technology.
Background technology
The canned food box as the fresh product of a kind of long-life food prod, has obtained being widely used of people.
At present; The canned food box product main exit of China is to Europe, and European countries are very high for the quality requirement of canned food box product, at first; Deep drawability to canned food box product has certain requirement, and the deep-draw of canned food box product highly is 15-20mm; Secondly, very high to the film performance requirement of canned food box, as: resistance to water: 121/60min; Acid resistance: 3% acetic acid 121/30min; Anti-sulphur property: cysteine salt and phosphate mixed solution 121/60min, do not have to bubble, do not have and turn white, do not have requirement such as come off,
But because the existing cold-rolling process of the canned food box of China adopts directly the mode of rolling to produce, promptly cold rolling process does not carry out annealing in process, so there is following shortcoming in this technology:
1, finished product strip-rolling lines is obvious, causes in four edges and corners punching out of canned food box and forms netting twine.Handle because this technology is carried out intermediate annealing, the strap cold rolling roll-force is bigger, rolling in lubricated instability cause the surface rolling strip flaw easily, during the tin can punching out edges and corners distortion less, striped can't be eliminated and form the netting twine defective.
2, in the canned food box punching out process avulsion phenomenon appears easily.Because this technology is not carried out the finished product annealing in process, band intensity is high, percentage elongation is low, and plasticity is relatively poor, and punching out quality instability causes the avulsion defective.
3, four corner angle of canned food box film take off acid resistance, anti-sulphur property is defective.Owing to form netting twine in four edges and corners punching out of canned food box, film by drawing crack, under acidproof, anti-sulfur test, with the base material reaction, causing filming comes off.
4, film in the punching out and come off.Because band need carry out the punching out deformation process, obscission appears in band coating easily under unlubricated condition.
5, contain the bisphenol-A composition in filming, do not meet the food hygiene requirement.Existing packaging for foodstuff coating adopts epoxy coating, and epoxy resin is synthetic with bisphenol-A, theoretically because the imperfection of chemical reaction causes containing all the time in the coating micro-bisphenol-A.
Therefore, there are serious quality problems in the quality of production of the tin can of China.
So how the quality of production that improves the canned food box is provided is the important technological problems that those skilled in the art need solve at present.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of canned food box production technology, it can effectively improve the quality of production of canned food box.
For solving the problems of the technologies described above, the present invention provides following technical scheme:
A kind of canned food box production technology provided by the invention comprises step:
Rolling through 2.3-1.3-0.8-0.5-0.30-0.22mm five passage roll-in sheet materials, forms first prefabrication with 5052 aluminium alloy strips;
Annealing is carried out annealing in process to said first prefabrication, forms second prefabrication;
Straightening is carried out straightening to said second prefabrication and is handled, and forms the 3rd prefabrication;
Coating is carried out coating to said the 3rd prefabrication, forms the 4th prefabrication;
Cut waxing, said the 4th prefabrication is cut, and the processing of waxing, the 5th prefabrication formed;
Moulding with said the 5th prefabrication moulding, forms canned food box finished product.
Preferably, in the said rolling step, the employing roughness is the rolling that the roll of 0.15-0.22 μ m carries out the 4th and the 5th passage, and rolling speed is less than 500m/min.
Preferably, in the annealing of said step, said first prefabrication is placed on following 3 hours of the environment that temperature is 210 degree.
Preferably, in the said step coating, select for use polyester coating that said the 3rd prefabrication is carried out coating.
Preferably, in the said step coating, the inboard execution of coating viscosity of said the 3rd prefabrication is 65-68 second, and outside execution of coating viscosity is 30-35 second.
Preferably, in the said step coating, the heavy 11-13g/m of the inboard coating of said the 4th prefabrication of formation
2, the heavy 5-7g/m of outside coating
2
Preferably, said step cut be coated with cured in, the interior outside waxing amount of said the 4th prefabrication is 90-140mg/m
2
Preferably, also comprise step after the said step moulding:
Packing is packed said canned food box finished product.
A kind of canned food box production technology provided by the invention comprises step: rolling through 2.3-1.3-0.8-0.5-0.30-0.22mm five passage roll-in sheet materials, forms first prefabrication with 5052 aluminium alloy strips; Annealing is carried out annealing in process to said first prefabrication, forms second prefabrication; Straightening is carried out straightening to said second prefabrication and is handled, and forms the 3rd prefabrication; Coating is carried out coating to said the 3rd prefabrication, forms the 4th prefabrication; Cut waxing, said the 4th prefabrication is cut, and the processing of waxing, the 5th prefabrication formed; Moulding with said the 5th prefabrication moulding, forms canned food box finished product.
Need to prove that because Mg content is between 2.2%-2.8% in 5052 alloys, the alloy foil of its production possesses the tensile strength height simultaneously, good percentage elongation, the good thermal conduction advantage has incomparable advantage in making containers for food use industry than other material.Therefore; It is 5052 aluminium alloy strips of 2.3mm that the raw material of canned food box of the present invention adopts thickness; The present invention adopts five passage rolling technology that band is carried out rolling; So that band reaches instructions for use, promptly reach the thickness of 0.22mm, and the strip-rolling surface of adopting five passage rollings can solve the canned food box has the defective of striped; First prefabrication is carried out annealing process handle, can effectively reduce the strength of materials, improve the percentage elongation of material simultaneously, guarantee the punching out requirement.In addition, canned food box production technology provided by the invention, following adopted is coated with ceroplastic, can effectively improve the surface lubrication property of tin can band, ensures that effectively obscission does not appear in the band coating in the punching out process.
Therefore, canned food box production technology provided by the invention, it can effectively improve the quality of production of canned food box.
Description of drawings
Fig. 1 is canned food box technological process of production figure in the specific embodiment of the invention.
The specific embodiment
Core of the present invention provides a kind of canned food box production technology that can improve the canned food quality.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 1, Fig. 1 is canned food box technological process of production figure in the specific embodiment of the invention.
This concrete a kind of canned food box production technology comprises step:
Rolling through 2.3-1.3-0.8-0.5-0.30-0.22mm five passage roll-in sheet materials, forms first prefabrication;
Annealing is carried out annealing in process to said first prefabrication, forms second prefabrication;
Straightening is carried out straightening to said second prefabrication and is handled, and forms the 3rd prefabrication;
Coating is carried out coating to said the 3rd prefabrication, forms the 4th prefabrication;
Cut waxing, said the 4th prefabrication is cut, and the processing of waxing, the 5th prefabrication formed;
Moulding with said the 5th prefabrication moulding, forms canned food box finished product.
Need to prove that because Mg content is between 2.2%-2.8% in 5052 alloys, the alloy foil of its production possesses the tensile strength height simultaneously, good percentage elongation, the good thermal conduction advantage has incomparable advantage in making containers for food use industry than other material.Therefore; It is 5052 aluminium alloy strips of 2.3mm that the raw material of canned food box of the present invention adopts thickness; The present invention adopts five passage rolling technology that band is carried out rolling; So that band reaches instructions for use, promptly reach the thickness of 0.22mm, and the strip-rolling surface of adopting five passage rollings can solve the canned food box has the defective of striped; First prefabrication is carried out annealing process handle, can effectively reduce the strength of materials, improve the percentage elongation of material simultaneously, guarantee the punching out requirement.In addition, the canned food box production technology that this specific embodiment provided, following adopted is coated with ceroplastic, can effectively improve the surface lubrication property of tin can band, ensures that effectively obscission does not appear in the band coating in the punching out process.
Therefore, the canned food box production technology that this specific embodiment provided, it can effectively improve the quality of production of canned food box.
In the preferred version of this specific embodiment, in the step rolling, the employing roughness is the rolling that the roll of 0.15-0.22 μ m carries out the 4th and the 5th passage, and rolling speed is less than 500m/min.
So, adopt the less roll of roughness that band is carried out the rolling of the 4th and the 5th passage, and carry out the roll speed limit, can further evade the defective that striped appears in strip surface.
In addition, in another preferred version of this specific embodiment, in the step annealing, first prefabrication is placed on following 3 hours of the environment that temperature is 210 degree.
According to the instructions for use and the 5052 alloy aluminum annealing process and the mechanical curves of material, selected following 3 kinds of annealing schemes are carried out the port annealing test, and 180 ℃/3hrs, 210 ℃/3hrs, 230 ℃/3hrs, concrete outcome sees the following form:
| 5052H24 | Tensile strength Mpa | Yield strength Mpa | Percentage elongation % |
| 180℃/3hrs | 300-300 | 280-280 | 5.5-6.0 |
| 210℃/3hrs | 280-285 | 245-250 | 9.0-9.0 |
| 230℃/3hrs | 255-260 | 220-225 | 11.0-12.0 |
Because this kind finished product mechanical property requirements is strict:
| Tensile strength Mpa | Yield strength Mpa | Percentage elongation % |
| 265-285 | 240-255 | ≥8％ |
Therefore, when annealing process was 210 ℃/3hrs, the mechanical property of band was best.
Need to prove that the coating of canned food box contains the bisphenol-A composition in the prior art, do not meet the food hygiene requirement.
Given this, the coating that this specific embodiment adopts is polyester coating, and it does not contain the bisphenol-A composition, so it can reach the requirement of food safety and sanitation.
In addition, the inboard execution of coating viscosity of the 3rd prefabrication is 65-68 second in this specific embodiment, and outside execution of coating viscosity is 30-35 second.So, can guarantee the caking ability of coating and the 3rd prefabrication.
The heavy 11-13g/m of the inboard coating of the 4th prefabrication that the 3rd prefabrication carries out forming after the coating
2, the heavy 5-7g/m of outside coating
2So, can guarantee that the inside and outside both sides of the 4th prefabrication have than suitable coating compounds thickness.
In addition, in this specific embodiment, step cut be coated with cured in, the interior outside waxing amount of the 4th prefabrication is 90-140mg/m
2
So, can effectively guarantee the problem that band can not occur coming off in the punching out process.
The canned food box production technology that this specific embodiment provides also can comprise the step packing after the step moulding, canned food box finished product is packed, and so, has formed the final products of canned food box.
Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. a canned food box production technology is characterized in that, comprises step:
Rolling through 2.3-1.3-0.8-0.5-0.30-0.22mm five passage roll-in sheet materials, forms first prefabrication with 5052 aluminium alloy strips;
Annealing is carried out annealing in process to said first prefabrication, forms second prefabrication;
Straightening is carried out straightening to said second prefabrication and is handled, and forms the 3rd prefabrication;
Coating is carried out coating to said the 3rd prefabrication, forms the 4th prefabrication;
Cut waxing, said the 4th prefabrication is cut, and the processing of waxing, the 5th prefabrication formed;
Moulding with said the 5th prefabrication moulding, forms canned food box finished product.
2. canned food box production technology as claimed in claim 1 is characterized in that, in the said rolling step, the employing roughness is the rolling that the roll of 0.15-0.22 μ m carries out the 4th and the 5th passage, and rolling speed is less than 500m/min.
3. canned food box production technology according to claim 2 is characterized in that, in the annealing of said step, said first prefabrication is placed on following 3 hours of the environment that temperature is 210 degree.
4. canned food box production technology according to claim 3 is characterized in that, in the said step coating, selects for use polyester coating that said the 3rd prefabrication is carried out coating.
5. canned food box production technology according to claim 4 is characterized in that, in the said step coating, the inboard execution of coating viscosity of said the 3rd prefabrication is 65-68 second, and outside execution of coating viscosity is 30-35 second.
6. canned food box production technology according to claim 5 is characterized in that, in the said step coating, and the heavy 11-13g/m of the inboard coating of said the 4th prefabrication of formation
2, the heavy 5-7g/m of outside coating
2
7. canned food box production technology according to claim 6 is characterized in that, said step cut be coated with cured in, the interior outside waxing amount of said the 4th prefabrication is 90-140mg/m
2
8. according to each described canned food box production technology of claim 1-7, it is characterized in that, also comprise step after the said step moulding:
Packing is packed said canned food box finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044534.5A CN102528401B (en) | 2012-02-24 | 2012-02-24 | Food tin can production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044534.5A CN102528401B (en) | 2012-02-24 | 2012-02-24 | Food tin can production process |
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| CN102528401A true CN102528401A (en) | 2012-07-04 |
| CN102528401B CN102528401B (en) | 2014-08-20 |
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| CN201210044534.5A Active CN102528401B (en) | 2012-02-24 | 2012-02-24 | Food tin can production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107433426A (en) * | 2016-05-26 | 2017-12-05 | 沃维克自动化公司 | Method for manufacturing the bush type supporting member sleeve to crack |
Citations (7)
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|---|---|---|---|---|
| CN1032194A (en) * | 1987-06-24 | 1989-04-05 | 塞格杜尔·皮奇尼铝加工公司 | Be suitable for making the aluminium alloy containing magnesium sheet material of can body and the method for producing this sheet material with punching press and stretching method |
| US6231970B1 (en) * | 2000-01-11 | 2001-05-15 | E. Khashoggi Industries, Llc | Thermoplastic starch compositions incorporating a particulate filler component |
| US20030150587A1 (en) * | 2002-02-11 | 2003-08-14 | Zhong Li | Process for producing aluminum sheet product having controlled recrystallization |
| US20040140025A1 (en) * | 2003-01-21 | 2004-07-22 | Kamat Rajeev G. | Method for shortening production time of heat treated aluminum alloys |
| CN1708532A (en) * | 2002-10-24 | 2005-12-14 | 纳幕尔杜邦公司 | Sulfonated aliphatic-aromatic polyetherester films, coatings, and laminates |
| JP2007502909A (en) * | 2003-06-11 | 2007-02-15 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Sulfonated aliphatic-aromatic copolyesters and shaped articles produced therefrom |
| CN101397622A (en) * | 2008-06-26 | 2009-04-01 | 江苏常铝铝业股份有限公司 | Aluminium alloy foil material for container and method for producing the same |
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2012
- 2012-02-24 CN CN201210044534.5A patent/CN102528401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032194A (en) * | 1987-06-24 | 1989-04-05 | 塞格杜尔·皮奇尼铝加工公司 | Be suitable for making the aluminium alloy containing magnesium sheet material of can body and the method for producing this sheet material with punching press and stretching method |
| US6231970B1 (en) * | 2000-01-11 | 2001-05-15 | E. Khashoggi Industries, Llc | Thermoplastic starch compositions incorporating a particulate filler component |
| US20030150587A1 (en) * | 2002-02-11 | 2003-08-14 | Zhong Li | Process for producing aluminum sheet product having controlled recrystallization |
| CN1708532A (en) * | 2002-10-24 | 2005-12-14 | 纳幕尔杜邦公司 | Sulfonated aliphatic-aromatic polyetherester films, coatings, and laminates |
| US20040140025A1 (en) * | 2003-01-21 | 2004-07-22 | Kamat Rajeev G. | Method for shortening production time of heat treated aluminum alloys |
| JP2007502909A (en) * | 2003-06-11 | 2007-02-15 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Sulfonated aliphatic-aromatic copolyesters and shaped articles produced therefrom |
| CN101397622A (en) * | 2008-06-26 | 2009-04-01 | 江苏常铝铝业股份有限公司 | Aluminium alloy foil material for container and method for producing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107433426A (en) * | 2016-05-26 | 2017-12-05 | 沃维克自动化公司 | Method for manufacturing the bush type supporting member sleeve to crack |
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| CN102528401B (en) | 2014-08-20 |
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