TPU gluing silicone rubber heat transfer film, coating process and application thereof

Abstract

The invention discloses a TPU gluing silicone rubber heat transfer film. The film sequentially comprises a silicone rubber bottom layer, a silicone rubber bonding layer and a TPU thin film; the silicone rubber bonding layer comprises, by mass part, 100 to 120 parts of vinyl silicone rubber based adhesive, 30 to 50 parts of vinyl silicone oil, 3 to 5 parts of polymethylhydrosiloxane, 0.02 to 0.05 part of an inhibitor, 0.05 to 0.2 part of a platinum catalyst, 3 to 5 parts of solid viscosifying powder, 3 to 5 parts of liquid silane coupling agent and 1 to 3 parts of polyether ester modified polysiloxane viscosifier. The invention further discloses a coating process and application of the TPU gluing silicone rubber heat transfer film. The process is simple, the cost is low, the production efficiency is high, the heat transfer film is easily machined, after-forming is achieved, weather resistance is good, hydrolysis resistance is achieved, the film is resistant to high and low temperature,good in color firming, easy to clean, and wide in silicone rubber thickness range, bubbles cannot appear inside, the property and the side effect after engraving of the silicone rubber heat transfer film cannot be affected, the cost is low, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of TPU, silicone and lettering film, in particular to a TPU-bonded silicone rubber lettering film, a coating process and its application. Background technique [0002] With the improvement of people's living standards, people's pursuit of beauty is getting higher and higher, especially people expect to show different patterns on clothes, shoes, gloves, hats, ribbons, bags and other daily necessities to get a more perfect vision effect, and at the same time get a good feel effect through touch. [0003] In the prior art, the pattern styles are mostly obtained by silk screen printing, mainly based on ink and glue materials. In recent years, there are more and more liquid silicone rubber printing. However, no matter what kind of material is printed to obtain the pattern style, there are shortcomings such as low production efficiency, high unit price, high defective products, many production site requirements, ...

AI Technical Summary

Problems solved by technology

The thickness of the TPU lettering film silicone rubber obtained by this method is only 5-30 wires, and the thickness is limited. At the same time, when the liquid silicone rubber layer exceeds 15 wires, bubbles are prone to appear inside the liquid silicone rubber and cannot be removed in time, which will affect the physical properties of the silicone lettering film. Side effect after engraving