The application and development trend of lightweig

2022-09-21
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The application and development trend of lightweight aluminized label paper in foreign countries

the noble, beautiful and metallic vacuum aluminized wine label plays an important role in improving the brand image of beer enterprises. With the continuous attention of beer enterprises at home and abroad to wine labels, how about the application of vacuum aluminized wine labels in foreign countries, and what is the latest development trend

at present, vacuum aluminized paper is becoming more and more lightweight in the field of label application. Europe and North America are the largest application markets of vacuum aluminized paper. At present, the vacuum aluminized label paper in China mostly uses European high humidity strong base paper as the base material, and the products are applied to recyclable wine bottles, such as French OSLON, Italian sand pond and other brands

lightweight please pay attention to the following matters. Aluminized label paper can reduce the purchase cost

with the gradual maturity of the application market of vacuum aluminized label, in order to effectively reduce the purchase cost, many enterprises begin to pay attention to and choose lightweight. The precautions when testing this parameter are: ① measure from the thinnest point; ② It is assumed that the insulation test piece includes aluminum coated label paper with indented imprinted marks. Take beer label as an example, 70g/m2 is the majority of high humidity and strong aluminized substrate in Europe. The usually used direct production process is 73g/m2 after aluminum plating; The transfer process is 75g/m2, and the latter process is suitable for personalized laser products. Applied to aluminized labels in the United States, once this process has become a scalable high humidity strong electroplated base paper, there are many choices of base weight: 50g ~ 80g. In view of the inverse relationship between the unit mass area of aluminized substrate and the use area of aluminized products, it is obvious that choosing lightweight paper can greatly save procurement costs

lightweight aluminized label paper can adapt to the operation of high-speed bottle pasting machine

aluminized label paper produced in Europe and the United States uses different paper raw materials and different paper production processes. European aluminized label paper mostly uses overpressure polished single copper paper as the base material, and the United States uses single-sided coated white kraft paper as the base material. In view of the bulkiness and high strength of kraft paper, the strength and stiffness of low gram weight paper are not inferior to that of high gram weight paper, and it is easy to die cut after printing

Europe and the United States adopt different production processes, which is due to the different emission standards for papermaking in Europe and the United States. The sizing principle of traditional European paper is to choose rosin sizing agent and alum, which is acidic; The United States restricts the use of general acid papermaking additives, mostly alkyl vinyl sizing agents and epichlorohydrin water strength agents, which are neutral and alkaline substances. The pH value of the adhesive used for sticking bottles is mostly between 9.5 and 10.0. In Europe, the paper with lower pH value and the adhesive with higher pH value quickly produce acid-base condensation reaction, and the label paper is quickly combined with the bottle body. Due to the low water absorption of the European paper surface, the glue will stay on the paper surface to strengthen the viscosity of the bottle. The reaction of American paper to alkaline colloid is slower than that of acidic paper, and the water absorption of the paper surface is much higher than that of European paper. Therefore, the moisture of the adhesive is quickly absorbed into the paper, and the label can be flattened within 2 seconds after sticking the bottle

although the bonding process of label paper and bottle body in Europe and the United States is different, it can achieve a completely consistent bottle sticking effect. Label paper can be quickly, accurately and firmly affixed to the correct position of the bottle body, and produce good adhesion with the bottle body. From the comparison of the performance of low back water absorption paper in Europe and high back water absorption paper in the United States, it can be seen that "the lower the gram weight of the paper, the thinner it is" is a misunderstanding. The combination of advanced science and technology and different production processes provides more choices for trademark printing enterprises

reprinted from: China Packaging News

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