Heat blocking film

Abstract

A thermoprinting film for the big perfusion bag is composed of a substrate layer made of bidirectionally stretching polyester film, a coated parting layer prepared from hard wax and thermoplastic resin, and a coated coloring layer prepared from coloring agent, thermplastic resin, filler and assistant. Said coloring agent is prepared from one or more refractory dyes or pigments. Said thermolastic resin is prepared from adhesion-promoting thermoplastic resin and refractory thermoplastic resin.

Description

A hot stamping film technical field The invention relates to a hot stamping film, in particular to a hot stamping film that can be used for hot stamping of large infusion bags, and can also be applied to various plastic packaging bags, stickers, cards, films, leather, Hot-stamping date, batch number and commodity price etc. on paper box, aluminum foil and other printing materials. Background technique Hot stamping is to use various printing methods (such as gravure printing, silk screen printing, offset printing, etc.) to print graphics and text on plastic films, and transfer the graphics and text of the thermal transfer printing film to the substrate through the action of heat and pressure during use. A method to realize graphic printing above. Now, this special printing method is more and more widely used in surface decoration, ranging from building decoration materials to student stationery, including medicinal liquid storage, beverage filling, etc., hot stamping is a ...

AI Technical Summary

Problems solved by technology

Chinese patent 88107918.9 discloses a wax thermal color ribbon, which is characterized in that its ink layer is mainly composed of montan wax, synthetic wax, Sichuan wax, IV resin, castor oil and carbon black; it is characterized in that the cost is low, and the disadvantage is Poor abrasion resistance

Chinese patents 90109475.7 and 97119461.0 respectively disclose a wax ribbon, the disadvantage of which is that the scratch performance is not ideal, and it is only suitable for TTR ribbon

Combining the technical solutions of the above patents, it can be seen that the focus of its R&D and technological transformation is concentrated on the thermal transfer ribbon part. Most of the products are used in office equipment for fax machines, with poor scratch resistance and easy film removal. very low rate