1. Preparation of online version

The screen plate shall be made according to the designed image. 300 mesh screen shall be selected for the colorful image part, and 100~200 mesh screen shall be selected for the luminous part. The detailed mesh size shall be recognized according to the particle size of the selected luminous material. The smaller mesh screen shall be selected for the luminous material with larger particle size, and the larger mesh screen shall be selected for the luminous material with larger particle size.

The adhesive shall be 100~200 mesh screen printing.

The induction of protective layer, masking layer and adhesive layer screen plate should cover the entire image, that is, the entire image induction is all blank, so as to ensure the image quality.

During plate making, pay attention to that the thermal transfer image after printing is reverse, and the screen plate should be reverse, so as to ensure that the thermal transfer image is positive.

2. Raw materials

Transfer paper, luminous material, heat transfer ink, heat transfer adhesive, solvent.

1) Substrate: The selected material shall have good release property, which can enable the printed image to peel off from the substrate smoothly. Generally, single-sided silicon coated paper should be selected with appropriate thickness. If the price is acceptable, Z should choose a thicker silicon coated paper to avoid uneven images.

2) Selection of luminous materials: the particle size of luminous materials should be appropriate. The luminous images produced by too large luminous materials are rough, and the images produced by too small luminous materials with the same amount are poor in toughness. Generally, the particle size of luminescent materials is 10-25 μ m。

3) Heat transfer printing ink: the selection of heat transfer printing ink depends on the luminous materials. Common luminous materials are not water resistant, and the pH of the ink used should be within the range of 6~8; Only the specially treated luminous materials are enough to select water-based heat transfer ink, but the price of such luminous materials is high, and this method is rarely used in general. The products introduced in this paper are oily heat transfer printing ink. Because the selected luminous materials, it is necessary to require good transparency of the ink so that the adjustment will not affect the luminous effect and brightness. The ink color selected for the image layer should be beautiful, so as to ensure that the produced image has strong stereoscopic sense and good visual effect.

4) Heat transfer adhesive: no special requirements, just heat transfer to the clothing with good adhesion.

5) Solvent: medium dry agent is generally used.

3. Manufacturing process

The process flow of heat transfer printing is: treatment of base paper → printing protection layer → printing image layer → printing luminous layer → printing cover layer → printing adhesive layer → monotony → packaging

1) Protective layer: use 300 mesh screen to print one pass of transparent heat transfer ink (if the viscosity of the ink is too high, you can use thinner to dilute it to the appropriate viscosity), and print the entire image with transparent ink, which is mainly used to protect the image layer, so that the image is wear-resistant, washable, and chemical resistant, and has the effect of positioning the image. Select natural air drying or low temperature drying.

2) Image layer: The image layer can be printed once with colorful ink of heat transfer printing. The number of screen mesh used is 300. The viscosity can be adjusted with thinner according to the actual situation. The primary basis of printing is the color from dark to light. Pay attention to the accurate positioning to avoid the offset when printing the luminous image again. Select natural air drying or low temperature drying.

3) Luminous layer: Luminous material and transparent heat transfer ink are prepared into luminous ink at a ratio of 1:1, and the viscosity is regulated by diluent. 100~200 mesh screen printing is selected, and the printing times are recognized according to the luminous brightness. The luminous brightness is high, the printing times are high, the luminous brightness is low, and the printing times are small. Generally, printing twice can meet the requirements. Select natural air drying or low temperature drying.

4) Masking layer: because the light-emitting material is selected to print the image, it is necessary to print a white reflective layer behind the image to increase the personalized effect. We use white heat transfer printing ink to print a mask layer on the whole image with a screen coated with a printing protective layer. Select natural air drying or low temperature drying.

5) Adhesive layer: after Z, use 100~200 mesh screen to print the hot-melt adhesive layer once to cover the entire image. It is mainly used to bond images with cloth. Select natural air drying or low temperature drying.

6) Packaging: Pack the monotonous heat transfer marks with packaging film and place them flat.

4. Application methods and precautions

1) Place the fabric that needs to transfer the image on the heat transfer machine. The material of the fabric can be polyester, acrylic, nylon, etc. It is necessary to ensure that the surface of the fabric is clean. Then place the monotonous adhesive layer of the heat transfer mark towards the fabric in an appropriate position.

2) Raise the temperature of the heat transfer machine to 110~120 ℃, adjust the pressure to 20~30N, press the upper plate of the heat transfer machine for 20s, turn it over, take out the fabric, cool it to room temperature, and tear off the base paper.

3) When washing fabrics with heat transfer images, do not rub the images forcibly to avoid image damage.

4) Do not scratch the image with sharp objects.

5. Characteristics of heat transfer mark

1) The transfer process is fast and the method is simple.

2) Screen printing can not be used for direct printing on small or messy surfaces, but the use of heat transfer images is very simple and can be completed.