The thermal transfers are printed on patterns and glue on the heat -resistant film. After heating and pressure, the skill method of the pattern (ink layer) and the glue layer adheres to the glass bottle. This process is mostly used on plastic and paper, and the glass vases are used less.
The thermal transfer process process is: 1. Positive drafts; 2. Printing a film; 3. H thermal transfer; 4. Baking.
The thermal transfer film is generally divided into five layers. The PET membrane layer of the appearance is used as the carrier. The maintenance layer has the effect of maintaining the ink layer. The ink layer is printed in pattern and the adhesive layer is the attachment layer.
Because the film printing phase can be drawn at one time, when transferring operations on the glass bottle, the existing pattern can be transferred to the glass bottle at one time. Compared with the tedious sets of silk printing, it can greatly shorten the operation of the printing case and reduce the loss of material losses formed due to printing errors. Now, the human capital is constantly rising, and the accurate and high -quality requirements for the set of packages are rising. Therefore, in the processing of multi -color drafts, the advantage of hot transfer is very significant.
In addition, in the thin film printing stage, CMYK printing is used, and special color printing can also be performed according to customer requirements. The effect of the heat transfer is more vivid, the color recovery is high, and the gradient color can be completed. Due to the heating and baking of the thermal transfer, the color of the pattern after its product will be more stronger than the water transfer, and it will not be easy to show the color loss condition. It has good performance such as corrosion, aging resistance, wear resistance, and high temperature resistance.
In the processing of glass bottle, the advantages of heat transfer are more significant compared to water transfer and wire printing.
In general, compared with traditional water transfer and silk printing, the advantages of thermal transfer are: less manpower consumption, high degree of automation, fast, accurate colors, high yield, and less environmental pollution.
However, the lack of thermal transfer is that the regulation of the substrate is high, and it is necessary to operate in a relatively regular orientation. The processing of square bottle and cylindrical bottle is more favorable. The demand for alien bottle can be analyzed according to the entity, so that the processed position can be recognized.
In the development of thermal transfer, in addition to the general color powder ink, more new types have also been developed, the pearly ink film and mirror ink heat transfer film, and the hot transcoc printing membrane with hot bronze.
