阅读说明：本技术 一种在基材表面形成金属质感纹理的印刷工艺 (Printing process for forming metal texture on surface of base material ) 是由 刘广 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种在基材表面形成金属质感纹理的印刷工艺,包括导入印刷图案、视觉定位校准、套印UV光油、紫外线照射固化、冷烫机压印金箔；本发明通过工业相机在每次套印光油前进行位置纠偏,可以较好的解决套印引起的基材拉伸变形的问题；同时通过工业相机确定冷烫工艺的膜压区域,更加合理的规划了加工区域,减少了原材料的浪费；本发明冷烫工艺相比热烫工艺的优点：不需要再定制热压模具,冷烫可在常温下进行,效率高,节省原材料。(The invention discloses a printing process for forming metal texture on the surface of a base material, which comprises the steps of introducing printing patterns, carrying out vision positioning calibration, overprinting UV gloss oil, carrying out ultraviolet irradiation curing, and carrying out cold stamping on gold foil by a cold stamping machine; the invention can better solve the problem of stretching deformation of the base material caused by overprinting by performing position correction before overprinting gloss oil by an industrial camera; meanwhile, the film pressing area of the cold-ironing process is determined by the industrial camera, so that the processing area is more reasonably planned, and the waste of raw materials is reduced; compared with the hot ironing process, the cold ironing process has the advantages that: the hot-pressing die does not need to be customized, cold ironing can be carried out at normal temperature, the efficiency is high, and raw materials are saved.)

1. A printing process for forming metal texture on the surface of a substrate is characterized by comprising the following steps,

step 1: preparing a base material printed in a traditional printing mode, and guiding the patterns to be overprinted into digital printing software, wherein four groups of cross cursors are respectively designed in the peripheral area of each group of overprinted patterns, and two groups of positioning cursors are designed in the upper left corner and the lower right corner of the base material.

Step 2: the positioning cursor is identified and positioned through an industrial camera, so that the position and the angle of the base material placed on the workbench are determined, the printing equipment is calibrated according to the position and the angle, and the alignment of the overprinting area and the starting point of the printing head is ensured.

Step 3: digitally overprinting a layer of UV gloss oil on an area needing gold stamping according to the adjusted starting point, wherein the UV gloss oil is overprinted once every time, and the action of Step2 is repeated once;

step 4: irradiating the overprinted substrate surface by using an ultraviolet lamp to cure the UV gloss oil on the substrate surface to 70-80%;

step 5: the positions of the four groups of cross cursors are identified and positioned through an industrial camera, the four groups of cross cursors are connected end to form a film pressing area, the cold-stamping foil is placed on the base material, pressure is applied to the film pressing area through a pressing roller of a cold-stamping machine, and the cold-stamping foil is stamped on the surface of the UV gloss oil so as to form a metal coating.

2. The printing process of claim 1, wherein the power of the ultraviolet lamp is 130w/cm, the irradiation time is about 0.3 to 0.5 seconds, and the irradiation temperature is 55 to 60 ℃.

3. The printing process for forming a metal texture on the surface of the substrate as claimed in claim 1, wherein the pressure value of the pressure roller during film pressing in the film pressing area is 1.3-1.4 MPa.

Technical Field

The present invention relates to a printing process, and more particularly, to a printing process for forming a metal texture on a surface of a substrate.

Background

Carry out gloss oil chromatography at every turn on traditional substrate of undertaking, the substrate can produce tensile, leads to the position of chromatography to take place the deviation, and the chromatography effect is unsatisfactory, and cold perm membrane is whole version impression in traditional impression process, can cause a large amount of materials extravagant at the in-process of impression.

Disclosure of Invention

The present invention aims to solve at least one of the above technical problems to a certain extent. Therefore, the invention aims to provide a printing process with higher precision.

A printing process for forming metal texture on the surface of a substrate comprises the following steps,

step 1: preparing a base material printed in a traditional printing mode, and guiding the patterns to be overprinted into digital printing software, wherein four groups of cross cursors are respectively designed in the peripheral area of each group of overprinted patterns, and two groups of positioning cursors are designed in the upper left corner and the lower right corner of the base material.

Step 2: the positioning cursor is identified and positioned through an industrial camera, so that the position and the angle of the base material placed on the workbench are determined, the printing equipment is calibrated according to the position and the angle, and the alignment of the overprinting area and the starting point of the printing head is ensured.

Step 3: digitally overprinting a layer of UV gloss oil on an area needing gold stamping according to the adjusted starting point, wherein the UV gloss oil is overprinted once every time, and the action of Step2 is repeated once;

step 4: irradiating the overprinted substrate surface by using an ultraviolet lamp to cure the UV gloss oil on the substrate surface to 70-80%;

step 5: identifying and positioning the positions of the four groups of cross cursors by an industrial camera, connecting the four groups of cross cursors end to form a film pressing area, placing a cold-stamping foil on a base material, applying pressure in the film pressing area by a pressing roller of a cold-stamping machine, and stamping the cold-stamping foil on the surface of UV gloss oil to form a metal coating;

furthermore, the power of the ultraviolet lamp is 130w/cm, the irradiation time is about 0.3-0.5 seconds, and the irradiation temperature is 55-60 ℃.

Furthermore, the pressure value of the press roll in the film pressing area during film pressing is 1.3-1.4 MPa.

The invention has the beneficial effects that:

the invention can better solve the problem of stretching deformation of the base material caused by overprinting by performing position correction before overprinting gloss oil by an industrial camera; meanwhile, the embossing area of the cold-ironing process is determined by the industrial camera, so that the processing area is more reasonably planned, and the waste of raw materials is reduced; compared with the hot ironing process, the cold ironing process has the advantages that: the hot-pressing die does not need to be customized, cold-pressing can be carried out at normal temperature, the efficiency is high, and materials are saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a block diagram of a printing process for forming metallic texture on a substrate surface;

FIG. 2 is a comparison of the substrates before and after overprinting in example 1;

FIG. 3 is a schematic substrate view of Step5 in example 1;

FIG. 4 is a schematic representation of Step5 in example 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications (such as up, down, left, right, front, back, inner and outer, center … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.