Promote the flow of other tiny particles. "Stereoplastic" will form a new concept of packaging materials. In its three-dimensional geometric structure, people can put active packaging substances, such as deoxidizers, preservatives or odor absorbers. Usually, these active agents are put in the packaging together with food in the form of small bags. PS photosensitive agent is composed of photosensitive substance, film-forming polymer resin, dye and organic solvent.
For the photosensitive layer coated with photosensitizer prepared by using photosensitizer alone, it has strong alkali resistance, poor film forming and difficult development. A proper amount of phenolic resin is added to the photosensitizer. Although the alkali resistance is poor, the film-forming property and adsorption property are improved, and the ratio of them is 0.5: 1 or 0.62: 1. If the photosensitizer is less, the film-forming resin is more, the alkali resistance is reduced, the dot loss is easy, and the residual film rate is low, which directly reduces the printing resistance of the printing plate. In-film labeling is to reprocess PP synthetic paper into special label paper, first print a beautiful trademark, and then send it into the mold by a manipulator. In the molding process of plastic products, the waste heat of resin is used to melt the special bottom layer of trademark paper, so that trademarks and plastic products can be integrated.