A kind of food metal can tin graphed sheet technique
Technical field
The invention belongs to tin graphed sheet field, more specifically to a kind of tin graphed sheet work of the tinplate for making food metal can
Skill.
Background technology
With the development in epoch, growth in the living standard, people are also more and more to the demand of packing tin for foodstuff, tradition
Time for expending of tin graphed sheet coating process longer, production efficiency is relatively low, can not meet the demand of existing market, meanwhile, existing
In some metal can tin graphed sheet technique, anti-corrosive technology is poor, and antirust ability is relatively low, it is impossible to enough meet with weak acid or alkalescent beverage
Filling memory requirement, be badly in need of find a kind of improve food metal tube tin graphed sheet efficiency tin graphed sheet technique, in existing production, had
Using UV ultraviolet tin graphed sheet, production is quick, but is because that all colours are disposably dried, and process is wayward, the matter of tin graphed sheet
Amount is poor, and accepted product percentage is low.
Content of the invention
The technical problem to be solved in the present invention is to provide the food that a kind of tin graphed sheet time is short, production efficiency is high, antirust ability is strong
Product metal can tin graphed sheet technique.
For solving above-mentioned technical problem, the present invention provides a kind of food metal can tin graphed sheet technique, it is characterised in that:The work
Skill comprises the steps:
(1) design, plate-making, go out film pattern according to sample design, then the film are bonded in ps version, carry out printing down,
Develop after first exposing 110 seconds to ps version during printing down again;
(2) base material treatment, base material select tinplate sheet metal, and steel plate is cleaned processing, and pass through high pressure air rifle first
Mouth blows away the debris of surface of steel plate, then steel plate is placed in alcoholic solution is rinsed soaking 10 minutes, is removed using alcoholic solution
Greasy dirt and the dust of surface of steel plate is removed, steel plate is placed in the air and is dried, treat that the alcoholic solution of surface of steel plate all volatilizees;
(3) on steel plate, coating machine carries out surface antirust treatment, and first-selection coats antirust base oil, dry film amount 5 on two surface of steel plate
~6g/m2, toast 20 minutes at 150 DEG C;
(4) steel plate background color is processed, and applies priming using coating machine on the steel plate for scribble antirust oil, and one surface of steel plate is coated
Yellow polishes, coats white magnetic oil, dry film 7~8g/m of amount on another surface2, toast 20 minutes at 200 DEG C;
(5) magnetic base oil is whitewashed, and magnetic base oil, dry film 14~16g/m of amount is whitewashed on the tinplate surface for scribbling white magnetic oil2,
Toast 20 minutes at 200 DEG C;
(6) steel plate glazing, applies oil polish, dry film 7~8g/m of amount on two surface of steel plate respectively2, 20 are toasted at 150 DEG C
Minute;
(7) steel plate coloring treatment, first by ps version on coating machine, scribbles the face of white magnetic oil as needed in steel plate
Upper coloring, is once coated with two kinds of colors, dry film 7~8g/m of amount2, toast 30 minutes at 190 DEG C, paint drying to be colored, according to
The color category of coloring is needed to repeat this step, until coloring is fully completed;
(8) steel plate is detected, the project for detecting as needed is detected to the steel plate after the completion of coloring, detection
Mesh has paint adhesion, anti-boiling power, anti-deep impulsive force, removes defective work, retains certified products;
(9) pack.
Using the beneficial effect of technique scheme it is:The metal tube tin graphed sheet technique of technical solution of the present invention mainly for
It is metallic beverage can, compared with the tin graphed sheet technique of beverage metal tank of the prior art, whole techniques complete the time for needing relatively
Short, antirust ability is higher, and the metal tube tin graphed sheet technique of technical solution of the present invention equally can be for general non-liquid food
Packing jar tin graphed sheet technique.
Specific embodiment
Technical scheme and structure are illustrated with reference to Figure of description, in order to the art
Technical staff understands.
A kind of food metal can tin graphed sheet technique, comprises the following steps:
(1) design, plate-making, go out film pattern according to sample design, then the film are bonded in ps version, carry out printing down,
Develop after first exposing 110 seconds to ps version during printing down again;
(2) base material treatment, from tinplate sheet metal, blows away the debris of surface of steel plate first by high pressure air rifle mouth, then
Steel plate is placed in alcoholic solution and is rinsed soaking 10 minutes, greasy dirt and the dust of surface of steel plate is removed, steel plate is placed in sky
Dry in gas;
(3) surface of steel plate antirust treatment, coats antirust base oil, dry film 5~6g/m of amount on two surface of steel plate2, at 150 DEG C
Baking 20 minutes;
(4) steel plate background color is processed, painting priming on the steel plate for scribble antirust oil, one surface colored yellow polishes of steel plate,
White magnetic oil, dry film 7~8g/m of amount is coated on another surface2, toast 20 minutes at 200 DEG C;
(5) magnetic base oil is whitewashed, and magnetic base oil, dry film 14~16g/m of amount is whitewashed on the tinplate surface for scribbling white magnetic oil2,
Toast 20 minutes at 200 DEG C;
(6) steel plate glazing, applies oil polish, dry film 7~8g/m of amount on two surface of steel plate respectively2, 20 are toasted at 150 DEG C
Minute;
(7) steel plate coloring treatment, first by ps version on coating machine, scribbles the face of white magnetic oil as needed in steel plate
Upper coloring, is once coated with two kinds of colors, dry film 7~8g/m of amount2, toast 30 minutes at 190 DEG C, paint drying to be colored, according to
The color category of coloring is needed to repeat this step, until coloring is fully completed;
(8) steel plate is detected, the project for detecting as needed is detected to the steel plate after the completion of coloring, detection
Mesh has paint adhesion, anti-boiling power, anti-deep impulsive force, removes defective work, retains certified products;
(9) pack.
Through detection, the tinplate main performance index according to the metal can that makes of technical scheme is as follows:
Table one:
During primer painting of the present invention, VOC free discharges, reduces the use of the energy, increases substantially productivity ratio and market competition
Power.
Above-mentioned combination accompanying drawing is exemplarily described to invention, it is clear that the present invention is implemented not by aforesaid way
Limiting, as long as employing method of the present invention design and this insubstantial that carries out of technical scheme is improved, or not improved will send out
Bright design and technical scheme directly apply to other occasions, all within protection scope of the present invention.