CN102220067A - Production method of white acid-resisting paint on inner wall of can - Google Patents
Production method of white acid-resisting paint on inner wall of can Download PDFInfo
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- CN102220067A CN102220067A CN2011101357169A CN201110135716A CN102220067A CN 102220067 A CN102220067 A CN 102220067A CN 2011101357169 A CN2011101357169 A CN 2011101357169A CN 201110135716 A CN201110135716 A CN 201110135716A CN 102220067 A CN102220067 A CN 102220067A
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Abstract
The invention relates to a production method of white acid-resisting paint on the inner wall of a can, belonging to the technical field of food package. The production method comprises the following specific steps: firstly, the metered solvent and epoxy resin are added into a reaction kettle for stirring to prepare resin liquid; 160kg of resin liquid is taken and put into a cylinder score, 100kg of nanometer titanium white powder is added into the reaction kettle, after mixing, the mixture is crushed and ground in high speed, and the mixture is put into a container for spare; then, 300kg of medroxyprogesterone is added into the reaction kettle, and 200kg of curing agent is added into the reaction kettle to prepare curing agent liquid which is barreled for spare; and finally, the prepared resin liquid is mixed with the prepared curing agent liquid, 10kg of nanometer titanium white powder and 1000g of leveling agent are added, after mixing, the mixture are added into the cylinder score for crushing, the viscosity of the paint is adjusted by the medroxyprogesterone and butyl cellosolve, and then filtering and packaging are carried out. In the invention, the problem that the color of the coating film is yellow is effectively solved, the density of the coating film is improved and the acid proofing performance of the coating film is improved.
Description
Technical field:
The present invention relates to the Food Packaging technology field, be specifically related to the production method of can inwall white acid resistance coating.
Background technology:
Food product pack sector application face is very wide, as the food can package industry in the positive develop rapidly of China.China is foodstuff production big country, has abundant meat-based food and vegetable based food resource, and simultaneously China also is a food consumption big country, along with improving constantly of people's living standard, to the demand of tinned pre-also in continuous rising.But the canned food quality problems emerge in an endless stream at present, this endangers food safety and broad masses of the people's life security and healthy on the one hand, also hindered the sound development of canned food industry on the other hand to a great extent, the can lining enamel new variety that exploitation is fit to the market requirement are imperative.
The effect of can lining enamel is to form an inertia isolation layer in jar, and content and can metallic substance are separated, and prevents that both from reacting, and causes the can inwall to be corroded or content goes bad.
The food that generally needs can lining enamel to guarantee the quality has:
(1) sulfur-bearing food such as meat, fish food etc.These food can decompose in the can production process; produce hydrogen sulfide or some other sulfide; hydrogen sulfide can be further reacts with the tin of can tinplate or iron and generates the tin sulfide or the iron sulphide of purple or black; this is called sulfide staining, so can lining enamel must adopt the can lining enamel of anti-sulphur to protect.
(2) fruit-vegetable food such as cherry, tomato etc. are acidic foods, and tartaric acid contained in this based food can cause can flatulence, food soup juice dulling, coloured food products to fade with the reaction of can tinplate.Peracid food also may cause can packing heavy corrosion, the rotten Serious Accident of can.Therefore this type of can inwall must adopt the acid proof can lining enamel.
(3) beverage such as beer, fruit juice and other synthetic beverages.For example beer is a kind of highstrung flavor beverage, will influence its local flavor as long as bring slight smell in the can in the course of processing, as long as contact tin beer will feculence.Therefore the can inwall must adopt the good inner-wall paint of compactness, and coating applies curing back odorlessness.
At above problem and standard, research to the antiacid performance of paint film is the emphasis of can lining enamel research at present, and along with the continuous development of canned food industry and the continual renovation of canned pack, in recent years new technical requirements has been proposed again can lining enamel, some can lining enamel is filmed after baking and is omited displaing yellow, influence the attractive in appearance of food, how not only to guarantee attractive in appearance but also reach the emphasis that good paint film property is research.It is yellow that the coating that uses in the tomato can is after curing mostly, influence the outward appearance of food, even the acid resistance of part tomato can lining enamel is relatively poor, the can metallic walls often occurs and is corroded, the problem that content is rotten.
In view of above defective, be necessary to provide a kind of production method that can solve the preparation can inwall white acid resistance coating of above technical problem in fact.
Summary of the invention:
Technical problem to be solved by this invention is to provide a kind of production method of can inwall white acid resistance coating.
Technical problem to be solved by this invention realizes by the following technical solutions:
The production method of can inwall white acid resistance coating is characterized in that concrete steps are as follows:
A. at first with the solvent (dimethylbenzene 20% that measures, N-BUTYL ACETATE 15%, propyl carbinol 5%, pimelinketone 5%, butyl glycol ether 5%, medroxyprogesterone acetate 10%), Resins, epoxy (40%) drops into successively in the reactor and stirs, be warming up to 100 ℃, vapor pressure maintains between 0.4～0.5MPa, is incubated 2 hours postcooling and is cooled to about 40 ℃, and it is standby to put into bucket after the resin liquid of being dissolved into is filtered;
B. the resin liquid 160kg that gets after filtering among the step a puts into scuffing of cylinder bore, adds the 100kg nanometer titanium dioxide, carries out high speed pulverization after the mixing 1 hour, grinds with sand mill then, and granularity reaches below the 5um, and is standby in the container of packing into;
C. medroxyprogesterone acetate 300kg is added in the reactor, drops into the solidifying agent of 200kg, stop heating after being warming up to 60～70 ℃, be incubated 1 hour, treat that the solidifying agent particle dissolves fully after, cool to 40 ℃, the barrelling of solidifying agent liquid is stand-by;
D. at last the solidifying agent liquid that makes among the resin liquid that makes among the above-mentioned steps b and the step c is mixed, add nanometer titanium dioxide 10kg, flow agent 1000g again, add in the scuffing of cylinder bore behind the thorough mixing and carried out high speed pulverization 1 hour, and, get final product through filtering, packing again with medroxyprogesterone acetate and butyl glycol ether adjustment paint viscosity.
Described solidifying agent is an Aradur3380-1 type lower molecular weight anhydride curing agent.
Described flow agent is selected the BYK-310 flow agent for use.
The present invention selects Aradur3380-1 type lower molecular weight anhydride curing agent for use, and this solidifying agent can effectively improve the resistance to chemical corrosion of filming, particularly resistance to acid, and has good food safety; In coating, also add nanometer titanium dioxide, can hide the yellow of Resins, epoxy on the one hand, improved the outward appearance of content; Owing to the adding of nanometer titanium dioxide, filming becomes fine and close more, has further improved the acid resistance of filming on the other hand.In addition, Aradur3380-1 type lower molecular weight anhydride curing agent and nanometer titanium dioxide are used and can also effectively improve the stain resistance of filming.
Embodiment:
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
At first with the solvent (dimethylbenzene 20% that measures, N-BUTYL ACETATE 15%, propyl carbinol 5%, pimelinketone 5%, butyl glycol ether 5%, medroxyprogesterone acetate 10%), Resins, epoxy (40%) drops into successively in the reactor and stirs, be warming up to 100 ℃, vapor pressure maintains between 0.4～0.5MPa, is incubated 2 hours postcooling and is cooled to about 40 ℃, and it is standby to put into bucket after the resin liquid of being dissolved into is filtered; Get resin liquid 160kg and put into scuffing of cylinder bore, add the 100kg nanometer titanium dioxide, carried out high speed pulverization after the mixing 1 hour, grind with sand mill then, granularity reaches below the 5um, and is standby in the container of packing into; Medroxyprogesterone acetate 300kg is added in the reactor, drop into the Aradur3380-1 type lower molecular weight anhydride curing agent of 200kg, stop heating after being warming up to 60～70 ℃, be incubated 1 hour, after treating that the solidifying agent particle dissolves fully, cool to 40 ℃, the barrelling of solidifying agent liquid is stand-by; At last the above-mentioned resin liquid that makes is mixed with the solidifying agent liquid that makes, add nanometer titanium dioxide 10kg, BYK-310 flow agent 1000g again, add in the scuffing of cylinder bore behind the thorough mixing and carried out high speed pulverization 1 hour, and, get final product through filtering, packing again with medroxyprogesterone acetate and butyl glycol ether adjustment paint viscosity.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. the production method of can inwall white acid resistance coating is characterized in that concrete steps are as follows:
A. at first with the solvent (dimethylbenzene 20% that measures, N-BUTYL ACETATE 15%, propyl carbinol 5%, pimelinketone 5%, butyl glycol ether 5%, medroxyprogesterone acetate 10%), Resins, epoxy (40%) drops into successively in the reactor and stirs, be warming up to 100 ℃, vapor pressure maintains between 0.4～0.5MPa, is incubated 2 hours postcooling and is cooled to about 40 ℃, and it is standby to put into bucket after the resin liquid of being dissolved into is filtered;
B. the resin liquid 160kg that gets after filtering among the step a puts into scuffing of cylinder bore, adds the 100kg nanometer titanium dioxide, carries out high speed pulverization after the mixing 1 hour, grinds with sand mill then, and granularity reaches below the 5um, and is standby in the container of packing into;
C. medroxyprogesterone acetate 300kg is added in the reactor, drops into the solidifying agent of 200kg, stop heating after being warming up to 60～70 ℃, be incubated 1 hour, treat that the solidifying agent particle dissolves fully after, cool to 40 ℃, the barrelling of solidifying agent liquid is stand-by;
D. at last the solidifying agent liquid that makes among the resin liquid that makes among the above-mentioned steps b and the step c is mixed, add nanometer titanium dioxide 10kg, flow agent 1000g again, add in the scuffing of cylinder bore behind the thorough mixing and carried out high speed pulverization 1 hour, and, get final product through filtering, packing again with medroxyprogesterone acetate and butyl glycol ether adjustment paint viscosity.
2. the production method of can inwall white acid resistance coating according to claim 1, it is characterized in that: described solidifying agent is an Aradur3380-1 type lower molecular weight anhydride curing agent.
3. the production method of can inwall white acid resistance coating according to claim 1, it is characterized in that: described flow agent is selected the BYK-310 flow agent for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101357169A CN102220067A (en) | 2011-05-24 | 2011-05-24 | Production method of white acid-resisting paint on inner wall of can |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101357169A CN102220067A (en) | 2011-05-24 | 2011-05-24 | Production method of white acid-resisting paint on inner wall of can |
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| CN102220067A true CN102220067A (en) | 2011-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101357169A Pending CN102220067A (en) | 2011-05-24 | 2011-05-24 | Production method of white acid-resisting paint on inner wall of can |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533057A (en) * | 2012-02-08 | 2012-07-04 | 蚌埠飞浦科技包装材料有限公司 | Formula and preparation process of food can inner wall coating |
| CN102585657A (en) * | 2012-02-08 | 2012-07-18 | 蚌埠飞浦科技包装材料有限公司 | Recipe and manufacture method of white food can inner wall paint |
| CN102585658A (en) * | 2012-02-08 | 2012-07-18 | 蚌埠飞浦科技包装材料有限公司 | Formula of coating special for environment-friendly canned food and manufacture method thereof |
-
2011
- 2011-05-24 CN CN2011101357169A patent/CN102220067A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533057A (en) * | 2012-02-08 | 2012-07-04 | 蚌埠飞浦科技包装材料有限公司 | Formula and preparation process of food can inner wall coating |
| CN102585657A (en) * | 2012-02-08 | 2012-07-18 | 蚌埠飞浦科技包装材料有限公司 | Recipe and manufacture method of white food can inner wall paint |
| CN102585658A (en) * | 2012-02-08 | 2012-07-18 | 蚌埠飞浦科技包装材料有限公司 | Formula of coating special for environment-friendly canned food and manufacture method thereof |
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Application publication date: 20111019 |