地址:XiongCounty of Hebei province
联系人:温长路
电话:0312-5761277
手机:13932255438
邮箱:quansheng@china-qsh.com
传真:0312-5765789
点击这里给我发送消息 点击这里给我发送消息
当前位置:首页 > News > 公司新闻
Pharmaceutical packaging aluminum foil printing its brief process flow
发布时间:2015-1-24 15:08:08 点击次数:

Pharmaceutical packaging aluminum foil printing its brief process flow is:

Aluminum foil rolling - > intaglio printing - drying - coated layer - drying - adhesive coating layer - drying - aluminum foil winding.

During the whole production process, the surface quality of intaglio printing text design and to achieve the heat sealing strength of the bonding layer, the bonding effect of protective layer in the dry temperature and the coating machine running speed, tension control, is the need to strictly grasp the process operation. So in the pharmaceutical packaging aluminum foil "national standards for medicinal aluminum foil surface quality of the printed word has specific requirements, the performance of the coating, bonding layer also has physical and chemical indicators, thus protecting medicinal inhibits PTP aluminum foil has good barrier property, health, safety, heat sealing and good physical and mechanical properties. To inhibits PTP aluminum foil printing coating production process of various properties of the above requirements, it remains to be familiar with the application of raw materials performance, and in the process of operation should pay attention to the following questions:

1, mastering the characteristics of aluminum foil and printing ink

Production inhibits PTP aluminum foil for industrial pure aluminum foil, of the raw materials used by the general thickness of 0.02 mm, tensile strength of 98 kpa, burst strength of 90 kpa, clean, smooth surface, no wrinkles, no indentation damage, no piece fluorescent material, surface wetting tension of not less than 32. Demand for medicinal aluminum foil pinhole degree is 0.1 -- 0.3 mm in diameter of pinhole not more than 1 / m2. Because the pinhole is penetrating the defects in the aluminum foil, medicine by oxygen and water vapor and light penetration will lower the efficacy or bad, so is strict with pinhole degree; Additional thickness of aluminum foil if you exceed the required deviation (10%), will have an effect on the amount of coating bonding layer and protective layer, to attract the attention of the operator.

Aluminum foil with printing ink is mainly divided into two categories: type of polyamide type printing ink. The ink printing of all kinds of material has good adhesion, dispersion, good gloss, abrasion resistance, solvent release, soft, used for plastic film printing. When used in aluminum foil material printing, the printing ink of the excellent properties of all can appear, and its heat resistance can meet the requirements of aluminum foil printing. Another kind is chloric ethylene vinyl acetate copolymer resin/c dilute acid resin as the main composition of the aluminum foil printing ink for special purpose, the hold point is a bright color and high concentration, with particularly strong adhesion of the aluminum foil, has the good transparency, but because of when used in gravure printing, the solvent volatility, medicinal inhibits PTP aluminum foil used for table cause intaglio roller inking hole when printing ink hard, deposition, produce paste version phenomenon. Therefore need to ink deposition and agitation necessary pretreatment, the method is to stir the printing ink of sedimentary and agitation or increase the temperature (bath). If the ink storage time is too long, can appear ink deposition, cause the ink upper resin solution, the lower pigment, the upper color is light, the lower color deep, also should be used after stir well.

2, add to the volume of solvent ink properly

When the viscosity of the ink, need to use a large number of diluent dilution, should add thinner, while stirring, thinner, uniformly distributed in the printing ink. Supplies meter measurement about between 20 to 30 s. Indoor temperature and humidity, the concentration of ink, ink concentration detector is used to determine best to join the amount of solvent, and according to the change of temperature and humidity, every time to measure the concentration of ink. Using aluminum foil gravure printing products, printing ink concentration is too low, will cause the printed word pattern color is not bright, checker to produce paste version phenomenon; Ink concentration is too high, the figure will produce crack phenomenon, not only a waste of ink, and easy to cause printing surface is not smooth, not beautiful also. In addition, based on the aluminum foil printing and gravure printing roller coater speed ink inking hole depth to choose the best.

3, the binder should comply with the requirements

Inhibits PTP aluminum foil adhesive is coated in the inside of the aluminum foil, its role is to make the aluminum foil and medicinal PVC plate can firmly hot pressing, make the drug inside the plastic plate blister is separated with the outside world, achieve the goal of drug seal. In the process of loading drug for heat sealing, bonding layer subjected to hot pressing and activation, thus uf resin and PVC plastic plate firmly into an organic whole, which requires the bonding layer and PVC resin should have strong heat sensitive and intermiscibility with base material.