Germany uses the requirement for the tasteless ink to the packages printing of food

Germany uses the requirement for the tasteless ink to the packages printing of food
European countries are rather strict to the packing instructions of food, but does not have a particular regulation to the printing-ink used for food packing yet at present. Obligated to observe for manufacturer of this ink " The requirement for the ink manufacturing approach of food packing " . This text introduces the requirement made and used of ink of Germany's food packing at present.
Found in Germany that there is different third base oh and one ton of ketone (ITX) in different beverages last year Micro- residual. This kind of remnants involves mere initiator used in UV solidification ink. When the printed matter is coiled, ITX glueing the small quantity of intermediate check through the ink transfers to the back not printed, as making and filling that is packed are entered in food. This kind of situation arouses great concern from the public, policy and responsible institution in the society.
In European Community 1935/2004 make stipulations as to material and material contacted with the food in the frame rule on, these no matter print or print by material and material, allow following harmful composition transfer to food: It is personal healthy to endanger, cause the food composition to change harmfully, cause the impact on sense organ of food quality.
Legal foundation
Or forbid include material and evaluate method, have special legislation yet inside to extreme, allow of printing-ink so far. This kind of situation impels the norm that people attempt to use the close field of technology. In addition join the intersection of European and the intersection of printing-ink and manufacturer of association already until " whether printing-ink manufacturing approach of food packing require " Restraint. The basis of the most important appraisal ink composition is " Size 2002/72 the norm (plastics and article regarding contacted with the food) " . Among them has not only stipulated the total migration extreme, has but also stipulated that moves the residue amount that the single material allows at most in extreme and daily necessities. Appraise the material listed in the plastic norm and used in the ink in view of the above. Certainly, most ink raw materials have not been listed in this plastic norm. In order to protect consumer's interests, printing-ink manufacturers have stipulated the unified preparation method. Stipulate the requirements for the choice of raw materials, their purity and the impact on performance of sense organ among them ' Smell and taste) And the influence on packing consideration and printing course of the structure.
Ink composition
And then recommend how the printing-ink composition must accord with the demands for food packing. Use different paper, the intersection of paper and size, the intersection of paper and grams of serious, the intersection of printed matter and design method, surface renovate and decorate and print postprocessing but speech just, the offset printing of the single paper is the most flexible printing method. Single pieces of the intersection of paper and offset printing dry mechanism of ink to permeate with to oxidize with thin oil dry for his characteristic vegetable oil still. However, flexibility and use cost lower printing machine of the offset printing of the single paper oxidizing dry time by waiting for several hours for the cost and was brought.
Tasteless
In view of the requirement for food packing, some defects exist in the dry mechanism of offset printing ink of the single paper. When it is handed in and unite that the vegetable oil is oxidized, the thin oil turns into a kind of three-dimension and hands in the solid united. Remove the polymerization needed, produce the low molecular volatile fission product, it sends out a kind of special smell ' After the ink is dry) . This kind of fission product will transfer to food, and change the taste of the food. If used and has not separated the packaging of layer the sensitive food, then must give up adopting the ink to oxidize dry mechanism. The commonly used offset printing ink is worse that this one that means printed matter resists the mechanical intensity and compares with wearability.
So when use and does not oxidize the dry tasteless ink of offset printing ing, had better cover on its surface first with the mere oil on the tasteless swimming skill. Evaluate the tasteless grade of the printed matter, mostly adopting feels the test of the centre (test according to Robinson of DIN10955 standard) Go on, analyze, examine at fission product ' Measure the content of acetic aldehyde) .
Danger moved
Because of pack structure, separate layer, have ink include material through bear, print danger that thing shifts at the food inside, need to use and having no ink moved in this way. This kind of ink does not have molecular weight to lower than including the material inside of 1000.
Such low molecular material is very easy through bearing printing things to spread because of the molecular motion.
In order to make the ink permeate, the molecular weight that usually uses the thin oil among them is lower than 1000, so there is not ink moved that does not include the thin oil of the low molecular weight, but it permeates slowly. Take some measure while being necessary for this reason, such as strengthen, gush out powder, print product, pile up and use the mere oil of swimming skill to put on the light on its surface on a small quantity. Move the state in order to examine the ink material, tighten the printed matter in a migration trough used for measuring. One side not printed contacts with food analogue. After putting through fixed time and temperature, obtain through chemical analysis, what ink include material through printed matter and see through how much it will be quantity inside.
Recently, the special ink group of rich forest has introduced tastelessly and not having single paper offset printing ink moved on the market, used in food and cigarette packages printing. Because many kinds of influence factors exist, it is the extremely complicated course to make food packing. From the point of view of pure law, the manufacturer of the final products has responsibility to observe the cooperation between all participants, stipulate all requirements and step of making course. If necessary, move the test or check the impact on sense organ. Could guarantee only in this way food packing can meet the technological and legal requirement.

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