A kind of elastic thermal transfer lettering film and its production method

Abstract

An elastic heat transfer printing lettering film comprises a bearing bottom material, protection layer back coating liquid, a release layer pressure-sensitive adhesive, color layer printing ink and a bonding layer hot melt adhesive. The formula of the protection layer back coating liquid comprises 14 parts of amino resin, 4 parts of acrylic resin, 3 parts of silicon dioxide, 1 part of an amino resin cross-linking agent and 78 parts of a mixing solvent. The formula of the release layer pressure-sensitive adhesive comprises 10 parts of organosilicone pressure-sensitive adhesive, 15 parts of silica gel, 2 parts of a platinum catalyst and 73 parts of a 120# solvent. The formula of the color layer printing ink comprises 25 parts of high-elasticity high-temperature-resisting TPU resin, 10 parts of toner, 3 parts of a wetting dispersing leveling assistant and 62 parts of the mixing solvent. The formula of the bonding layer hot melt adhesive comprises 65 parts of high-elasticity and low-temperature type TPU resin, 30 parts of high-melting-index low-temperature type TPU resin and 5 parts of a TPU opening agent. According to the elastic heat transfer printing film, the same-batch same-color difference delta E is smaller than or equal to 4, the thermoprint layer abrasion resistance is larger than or equal to 90%, the release force is equal to (0.10-3.00)N / 25 mm, washing resistance is achieved, the washing color fading rate is smaller than or equal to 10%, and the basic safety technology requirement conforms to the B type in the GB18401.

Description

technical field [0001] The invention relates to the technical field of thermal transfer printing, in particular to an elastic thermal transfer lettering film and a production method thereof. Background technique [0002] Thermal transfer printing is an emerging printing process. The printing method of this process is to print the transfer film first, that is, first print the pattern or text on the surface of the film, and then transfer the graphics and text on the film to the surface of the substrate through heat transfer processing equipment through heating and pressure. Applied to the decoration of clothing, T-shirts, advertising shirts, sportswear, washed labels, gloves, shoes and hats, bags and textiles. However, most of the existing transfer films need to go through graphic design, plate making, printing and other processing procedures, which have disadvantages such as large minimum order quantity, high cost, and long production cycle from design to hot stamping into f...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an elastic thermal transfer lettering film and its production method, the main purpose of which is to overcome the defects of the existing transfer film such as long production cycle, small quantity and high cost