Precautions during the labeling process of the hose label
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The use of labels on hoses to enhance the value of product packaging has become a highlight of daily packaging. It is usually done by using a front and rear label for partial decoration on both sides of the hose or a 360-degree wrap for the entire circumference of the hose. Printing Alliance. People need to squeeze the hose when using the hose. At the same time, because the hose needs to be sealed after filling, and the shape of the hose tail is changed from cylindrical to linear after the hose is sealed, A large deformation has occurred, and the stress on the surface of the hose due to the deformation is correspondingly easy to cause deformation in the end position of the hose. Therefore, the hose label needs to use a special label material, and the printing tool is strictly required in the labeling process such as the surface treatment of the hose, the label shape design, the label labeling position, and the labeling time.
1, label selection
Due to the large deformation after the tube body is sealed, when the 360-degree wrap is used for the whole-week decoration, it is especially necessary to select a thin and soft label surface material to adapt to a certain degree of deformation, but the hose label tends to have a large area. It is also necessary to select a label surface material with a certain degree of stiffness to meet the requirements of automatic labeling printing alliance. The thinnest 250 series materials in the uniaxially stretched polyolefin film material of Avery are very suitable for the material selection of hose labels, and special adhesives are needed to match the printing tools. The transparent Fasson Clear 250 film with forged gloss is compatible with the expressive printing technology of most color hoses.
2, hose surface treatment
The hose body is usually made of low-density polyethylene. Due to the low surface energy of the low-density polyethylene material, it is difficult for the adhesive to have a good bonding force with the hose surface. In order to improve the proper adhesion between the pipe body and the label, it is necessary to modify the surface of the hose to coat the surface coating equipment consumables on the pipe body. At present, the coatings commonly used by hose companies are heat-curing varnish and UV-curing varnish. In the composition of varnish, the silicone oil and wax in varnish should be removed or reduced, and the conformity test of varnish and label material should be done well. And stabilize the varnish formula and coating thickness, dryness and other coating processes in the middle of printing. In general, the heat-curing varnish is better than the UV-curable varnish material.
3, label shape design
In order to avoid and disperse the stress generated by the deformation of the tube tail as much as possible, the four corners of the label near the end of the tube can be designed as arc-shaped opening device consumables larger than R5.
Labeling position requirements: In order to avoid and disperse the stress generated by the deformation of the tube tail as much as possible, the distance between the label and the nozzle should be greater than the 10MM material market.
4, sealing time
Since the adhesion between the self-adhesive label and the tube body needs to reach a relatively stable high-viscosity level after 24 hours, it should be printed in the middle of the process of sealing the tube after 24 hours of labeling.