Method and device for printing pictures and texts on surface of irregular object

A technology of object surface and printing method, which is applied in the direction of printing device, printing, printing of special varieties of printed matter, etc. It can solve the problems that cannot be solved, the movement and deformation of graphics and text are irregular, and cannot be reached.

Inactive Publication Date: 2010-06-16
赵东林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Screen printing method. In recent years, there have been many screen printing machines for curved surfaces, which mainly use the limited flexible deformation of the screen and some rotational movement of the substrate to print graphics and text on the curved surface of the object. This method is because The flexible deformation of the screen has certain limitations, so it can only print pictures and texts on parts of the product, such as ball products, this technology can only print a picture and text strip on the equator of the ball, which only accounts for 1/ of the spherical surface 5
[0004] 2. Oil spraying method, spray the color on the surface of the product several times through a hollow mold to form a certain graphic decoration effect. This method is more suitable for products with large color blocks and simple graphics. For products that require fine graphics product, this method cannot resolve
Due to the limitation of the shape of the rubber roller, this method can only carry out heat transfer printing on the plane, cylindrical surface, and conical surface. Although the special-shaped rubber can be made into various shapes, it cannot achieve a large area on the surface of irregular objects because of the need for exhaust. printing, which can only be realized locally
[0006] 4. Dye-sublimation transfer printing, by heating the back of the sublimation transfer paper, the graphic layer is flown onto the substrate. Also due to the limitation of the heating material, graphic printing on regular surfaces and partial surfaces can only be achieved, and due to The temperature required by this method is ve

Method used

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  • Method and device for printing pictures and texts on surface of irregular object
  • Method and device for printing pictures and texts on surface of irregular object
  • Method and device for printing pictures and texts on surface of irregular object

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0128] Example 1 Fine graphic printing on all surfaces during the forming of Christmas balls

[0129] The first step: making composite heat transfer film type I, a total of five layers.

[0130] Such as Figure 1A Shown: choose PS sheet, thickness 0.1mm as plastic substrate 1a; choose PE film, thickness 0.05mm as release layer 2a; choose PU two-component compound film glue as compound glue 1b, adopt traditional dry compounding process , Laminate 1a and 2a; use gravure printing to reverse print the printed image and text on the peeling layer 2a to form a printed image and text layer 3b; use traditional EVA hot melt adhesive to thermally coat the printed layer 3b to form an adhesive layer 4.

[0131] The second step: the composite transfer film is pre-deformed, and the surface of the Christmas ball 5a can be divided into two symmetrical hemispherical surfaces. Therefore, the center line 6 is adopted to make the left and right hemisphere deformable molds 7, and the left and right can b...

Example Embodiment

[0136] Example 2 Printing on the surface of Christmas balls under post-curing glue conditions

[0137] The first step: make composite heat transfer film type II, a total of four layers structure

[0138] Such as Figure 1A Shown: Choose PVC sheet, thickness 0.15mm as plastic base material 1a;

[0139] Select the release agent for printing to be directly coated on the substrate by coating, with a thickness of 0.05mm as the release layer 2a;

[0140] Use gravure printing to reverse print the printed image and text on the peeling layer 2a to form a printed image and text layer 3b;

[0141] A moisture-curing reactive polyurethane hot melt adhesive is selected and thermally coated on the printing layer 3 to form the adhesive layer 4.

[0142] The second and third steps are together with the embodiment;

[0143] The fourth step: peeling and post-curing.

[0144] After being ejected from the mold, cool, and peel off 31 formed by combining the base layer 1a of the composite transfer printing film w...

Example Embodiment

[0145] Example 3 Printing on the entire surface of the Christmas ball-molding under the condition of a male mold

[0146] The first step is with the example

[0147] Step 2: Making a plastic deformation composite transfer film. The surface of the Christmas ball 5 can be divided into two symmetrical hemispherical surfaces. Therefore, the left and right hemisphere plastic deformation molds are made by the method of center dividing line 6, and the left and right hemispheres can be shared, such as image 3 Shown. On the heating vacuum plastic deformation device, as shown in Figure 4, place the flat composite transfer film 10a (printed with graphics and text corresponding to the left hemisphere) and 10b (printed with graphics and text corresponding to the right hemisphere) in the plastic deformation The upper surface of the mold 7 and the sealing between 10a, 10b and 7 are realized by the pressing device 11. The male mold 17 is pressed down by the cylinder through the heating device 18...

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Abstract

The invention relates to a method and a device for printing pictures and texts, particularly to a method and a device for printing fine pictures and texts on the surface of an irregular object, which comprises the following steps of: a. manufacturing a compound transfer printing film; b. pre-deforming the compound transfer printing film; c. placing the deformed compound transfer printing film in a plastic hollow blow molding mould, realizing transfer printing in the plastic molding process, or clinging the deformed compound transfer printing film to a printing undertaking object, and sharing through one or more modes of heating, infrared illumination, ultraviolet illumination and pressurization to realize transfer printing; and d. removing a substrate layer and a stripping layer. The invention has the advantages that the printing of fine pictures and texts can be carried out on the surfaces of a regular object and the irregular object, pictures and texts are continuous, whether the local surface or the entire surface can be printed once through the invention, and the invention has a good solution particularly for an object with a complicated surface.

Description

Technical field [0001] The invention relates to a method and device for printing pictures and texts, in particular to a method and a device for printing fine pictures and texts on the surface of irregular objects. Background technique [0002] The surface of all objects can be summarized as plane, cylinder, conical surface, arc surface, spherical surface, uneven surface, plane type such as flat plate and cube, etc.; cylindrical surface and conical surface such as bottle, barrel and drinking cup, etc.; arc Surfaces and spherical surfaces such as spheres, ellipsoids, etc.; uneven surfaces such as characters, animals, cartoon dolls, and some complex objects are composed of two or more types of surfaces mentioned above. The current printing technology has a mature technology for plane, cylinder, and conical surfaces and can achieve good results. However, for irregular objects containing curved surfaces, spherical surfaces, and uneven surfaces, such as balls, characters, animals,...

Claims

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Application Information

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IPC IPC(8): B41M1/40B41M3/12B41M5/00B44C1/165
Inventor 赵东林
Owner 赵东林
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