Method and equipment for three-dimensional shaped thermal transfer

Abstract

The invention relates to a method and equipment for three-dimensional shaped thermal transfer, in particular to the method and the equipment for special printing on a product surface. The method comprises the following steps: starting preheat, performing thermal rolling transfer on a product, performing positive and negative pressurization vacuum thermal transfer on the product subjected to the thermal rolling transfer, and returning the product to the original position after the positive and negative pressurization vacuum thermal transfer is finished. The equipment comprises a control electrical cabinet, an upper frame, a sucking disk moving oil cylinder, a sucking disk, a preheater, a working disk, an oil pressure supply system, a vacuum pressure storing tank, a thermal rolling part moving oil cylinder, a thermal rolling part, an elevating platform, a vacuum supply system, a bottom frame and an elevating platform elevating oil cylinder. With method and the equipment, the surface of a special three-dimensional product can be formed in one piece by thermal transfer with high stability, precise alignment and low fraction defective; the processed workpiece surface is flat and smooth and free from wrinkles, snaps and shedding; the corner, the circular bead and the concave angle of the product can be covered without any cracks, wrinkles; the leathers and textiles subjected to the transfer have high tensile strength and the products after the transfer do not deform when extruded and bent.

Description

Technical field [0001] The invention relates to a printing method and equipment, in particular to a special printing method and equipment for a three-dimensional surface of a product. Background technique [0002] At present, with the vigorous development of China's economy, the competitiveness of Chinese-made products in the world market is continuously increasing, and the quality and appearance of various products are also continuously improved, especially for the development of the electronics industry to promote the surface printing of related products. Claim. [0003] Thermal transfer technology is a technology that prints patterns on heat-resistant adhesive tape, and prints patterns on the ink layer onto finished materials through heating and pressure. Thermal transfer technology as a rising surface printing technology, its unlimited creative design, simple printing requirements, rich printing pattern colors, environmentally friendly production environment, not easy to take ...

AI Technical Summary

Problems solved by technology

[0006] a. Water transfer printing uses water pressure and activator to dissolve and transfer the peeling layer on the water transfer printing carrier film, without pressure on the surface of the product, so that the water transfer printing film and the product are not firmly attached, and the transfer is likely to be incomplete. Or deblocking, the yield is not high;

[0007] b. Water transfer printing can only transfer and coat some products with low radians, such as some products with large radians. Water transfer printing cannot cover the entire surface, and wrinkles are prone to occur in some corners, which will affect the appearance of the entire product;

[0008] c. Water transfer printing adopts water coating technology, the alignment accuracy is poor, and accurate alignment transfer cannot be realized;

[0009] d. The tensile strength of the water transfer printing film is insufficient, and the corners, rounded corners and concave corners in the three-dimensional transfer printing are prone to breakage, wrinkles and other undesirable phenomena, which will affect the appearance of the entire product;

[0010] e. Water transfer printing cannot transfer non-waterproof products, such as leather, textiles, etc.;

[0011] f. Water transfer printing is produced by hand, the production speed is slow, and it is not environmentally friendly and pollutes a lot

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