Is a kind of high-grade aluminum foil packaging materials that can replace a large area of foil bronzing, hot silver, printed products magnificent, not only improve the quality of packaged goods, and enhances the value of packaged goods on display, widely used in luxury goods Trademarks and packaging. Aluminum foil and other packaging in the food and pharmaceutical applications in the field is very broad, aluminum foil and plastic film composite Division, effective use of high-temperature cooking and completely shading characteristics, made cooking bags, cooked food can be packaged, multi-layer composite film also for biscuits, snacks, beverages and other small food packaging.

In recent years, aluminum foil packaging expanding range of applications, in addition to foreign pharmaceutical packaging, food packaging, health care products packaging, etc. are applied to promote our country's demand foil printing technology continues to improve, both sides have now reached the surface of aluminum foil can be printed anyway. Not only can print one color products, but also printed colorful text pattern of multicolor varieties, aluminum foil surfaces become coated imitation gold foil and other colors are displayed in front of consumers, so that people feel noble form of packaging gorgeous, put it down, played a good publicity, the role of protective products.

Features and Production of aluminum foil

The foil is characterized by: a metallic luster, good light, heat and light of a high reflectance, reflectance metallic luster and brightness can be improved color printing; isolation, good, strong protection, and water vapor impermeable body, prevent the absorption of moisture contents, gasification, less susceptible to bacteria and insects infringement; shape stability, unaffected by humidity changes. Ease of processing, can be printed on aluminum foil, poor color, embossed, surface coating, glue paint, etc.; not by force, not sealed, there has pinholes and easy wrinkling phenomenon, so under normal circumstances is not alone use, usually with paper, plastic film processing into composite materials, to overcome the disadvantage of non-sealed, isolation resistance, etc. have also been fully exploited.

Aluminum production is measured from the beginning to the machined aluminum foil stock prime foil the whole process, which is a continuation of cold rolling aluminum strip. The blank aluminum billet and hot-rolled billet casting two kinds of cold rolled to a thickness of 0.4-0.7mm of the foil stock, and then the rough rolling, intermediate rolling and finish rolling to obtain different thicknesses of aluminum foil. Aluminum foil production process is based on the production of specific products, alloy type, product specifications, product quality requirements, production number and production equipment specifications, production capacity and other factors to determine. Flexible with aluminum foil (thickness of 0.0065mm a 0.007mm) of the overall production process: aluminum smelting - Casting - cold - intermediate annealing - cold - foil stock - roughing - in rolling - finishing (doublet) - cut - Finished annealing - packaging.

Foil Printing

Foil Printing can be letterpress printing, gravure and flexographic printing. Toppan Printing for small volume printing, gravure and flexo printing for high-volume printing paper roll Jane. Printing process to take the following measures: the need for larger printing pressure. Strong barrier foil absorbent difference, pressure plate and the surface of aluminum foil in contact with the largest area of ink adhesion force. Requires strong adhesion of ink drying speed is, fast. Adopt Indian iron ink, resin-based offset printing ink or fast fixing and plastic ink offset printing ink mixing. Within the general need to add ink driers to improve drying speed, such as gravure hot air drying device must be installed. Selected to be hit on the machine before the ink sample, testing its hue, drying and other compliance requirements.

In the current package substrate, foil barrier is the best, aluminum foil is a high-end printing and packaging materials, in recent years, aluminum foil gravure printing industry is already an important branch. Aluminum foil in packaging applications is mainly used trademarks and some upscale food packaging such as beer top mark, chocolate packaging, and paper, plastics, aluminum foil with a thin, crisp, easy wrinkling characteristics, the Central Standing Committee in the printing process some problems.