Basic knowledge of online capping machine heat shrink label manufacturing
Pre-pressing manufacturing of in-line capping machine
Because heat shrink film is a thermoplastic film that is stretched and oriented during production and heat shortened during application. Therefore, no matter which printer you choose to print on, consider the horizontal and vertical shortening of the material before planning your exterior pictures rate and the allowable deformation error of the shortened decorative graphics in all directions to ensure the accurate restoration of the shortened pictures, texts and barcodes on the container.
Drawing orientation of online capping machine
Whether gravure or flexo printing is used for heat shortening film, the printing method is mainly inner printing, and the direction relative to the picture on the printing plate should be positive. Nowadays, surface printed shortening films also appear. If this happens , the image orientation on the plate should be reversed.
Drawing level of online capping machine
Due to the limitations of flexographic printing, if flexographic printing is used as a shortening film, the layers of the picture should not be too delicate, and gravure printing can be used to enrich the layers of the picture.
Scale planning of online capping machine
The thermal shrinkage film material for printing has a transverse shortening rate of 50 percent 52 percent and 60 percent 62 percent, which can reach 90 percent under special conditions, and a longitudinal shortening rate of 6 percent and 8 percent. However, when the film is shortened instantaneously, due to the container's Restrictions, the horizontal and vertical directions cannot be shortened completely. In order to ensure the accurate recovery of the shortened picture, text and barcode, the shape of the container needs to be considered, and the correct proportion and deformation rate should be calculated according to the actual situation. For the need to turn the sheet film into a circle Tubular, thermally shortened label that seals the overlapping parts together with adhesive. It should be noted that the sealing part is not designed with graphics and text, so as not to affect the adhesion fastness.
Barcode placement for inline capping machines
In general, the barcode should be placed in the same direction as the printing direction, otherwise the barcode lines will be distorted, affecting the scanning results, resulting in misreading. In addition, the color selection of label products should be based on spot colors as much as possible, and a white version needs to be made. It can be made into full version or hollowed out according to the actual situation. The color of the barcode should follow the conventional requirements, that is, the color matching of the barcode and the blank should meet the color matching standard of the barcode. The selection of printing materials. The printing of thermal shortening labels has been briefly analyzed above. The printing process, information also plays a decisive role in affecting the printing quality. Therefore, it is very important to choose the right information. According to the application field and cost of the thermal shortening label, film characteristics, shortening performance, printing process and label process requirements, confirm Film thickness data. Generally, the film thickness of short film labels is 30-70 microns, and commonly used are 50 microns, 45 microns, and 40 microns, depending on the labeling performance of the labeling equipment. For the selected label data, film is generally required. The shortening rate of data is within the range of use, and the shortening rate of horizontal (TD) is higher than that of vertical (MD). The horizontal shortening rate of commonly used data is 50 percent, 52 percent, and 60 percent, 62 percent. In special cases, it can reach 90 percent. The shortening rate should be 6 percent to 8 percent. Also, since the shortened film is sensitive to heat, it needs to be protected from high temperature during storage, printing and transportation.
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