Manufacturing method of post-press synergy process

Abstract

The invention discloses a manufacturing method of a post-printing synergy process, which belongs to the technical field of printing processing and comprises the following steps: arranging a gloss oil layer on a printing stock; carrying out semi-curing treatment on the gloss oil layer to obtain a middle gloss oil layer; the middle gloss oil layer is subjected to texture mold pressing and curing, and a synergistic gloss oil layer is obtained; according to the invention, the traditional mature process of silk screen and hot pressing is adopted for replacement, the cost is lower, no additional equipment investment is needed, and the yield and the productivity are greatly improved. Compared with an existing three-dimensional crystal embossment process, the problems of dependence on special equipment and low yield are solved, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing processing, in particular to a production method of a post-printing synergistic process. BACKGROUND

[0002] In the printing industry, post-printing synergistic processes are increasingly popular in the market. For example, the digital post-printing synergistic technology of Vision Highdi (such as CN202411582076.X) realizes partial gloss, gold stamping, and embossing effects through digital printing technology, without the need for plate making and supporting variable printing, and can add dazzling crystal effects to printed matter. However, due to satellite droplet effect and liquid leveling, it is difficult to reproduce relatively sharp corners, and the process effect is limited by the physical precision of digital equipment.

[0003] CN202310343667.0 proposes a varnish transfer 3D water product embossing printing process and printing equipment, which can realize fine corner reproduction compared to Vision Highdi and other post-printing synergistic technologies. This process is developed vertically and deeply based on 3D grating direct printing technology, highlighting the three-dimensional and tactile sensations of the product, expanding the selection boundaries of product appearance pattern materials, and improving the added value of the product. However, this process requires customized 3D direct printing equipment (hundred thousand yuan level), which cannot be compatible with traditional printing production lines. In addition, due to the inherent defect of varnish curing shrinkage, edge warping or cracking may occur occasionally, resulting in low yield, which increases production cost and limits production efficiency.

[0004] CN202211070423.1 proposes a silk screen three-dimensional variable pattern process, which combines the latest silk screen cold stamping technology with three-dimensional grating direct printing technology, and combines the shortcomings of original three-dimensional variable patterns that cannot achieve metal three-dimensional texture with silk screen cold stamping, achieving the stunning effect of direct printing 3D variable patterns. The core is to use the customized 3D direct printing equipment described in CN202310343667.0 to achieve the effect of three-dimensional variable patterns, and due to the need to combine with the pre-printed grating image on the printing sheet, the registration accuracy needs to be accurate to 0.01mm, which is extremely difficult to achieve.

[0005] CN202211052859.8 proposes a corner and bevel multi-angle pattern printing process with diamond cut surface effect, which realizes the effect of diamond cut surface on the printing material through digital local inkjet, multi-layer stacking, etc., and the visual effect is like a diamond. The implementation of this process relies on the investment of digital post-printing synergistic equipment, and the digital printing equipment itself is low in efficiency, while the layer-by-layer stacking is more time-consuming, and the production capacity is extremely low (about 500-800 sheets per hour).

[0006] In order to solve the above problems, the present application provides a post-printing efficiency process to solve the problem of low yield and high cost in the prior printing process. SUMMARY

[0007] The purpose of the present application is to provide a manufacturing method of a post-printing efficiency process to achieve the purpose of cost reduction and efficiency improvement.

[0008] In order to achieve the above purpose, the present application provides the following solutions:

[0009] A manufacturing method of a post-printing efficiency process, comprising the following steps:

[0010] setting a varnish layer on the printing substrate;

[0011] semi-curing the varnish layer to obtain an intermediate varnish layer;

[0012] molding texture on the intermediate varnish layer and curing to obtain an efficiency varnish layer.

[0013] Preferably, the varnish layer is set by silk printing.

[0014] Preferably, the silk printing uses a silk screen with a mesh number of 100-200.

[0015] Preferably, the texture is obtained by molding with a gilding machine.

[0016] Preferably, the varnish layer is cured by UV varnish.

[0017] Preferably, in the step of semi-curing the varnish layer, the semi-curing degree of the UV varnish is 60-70%.

[0018] Preferably, in the step of semi-curing the varnish layer, a mask layer is set on the varnish layer, so that the semi-curing degree of the UV varnish in most areas is 60-70%, and the semi-curing degree in local areas is 70-80%.

[0019] Preferably, the texture is visual contrast texture.

[0020] Preferably, the visual contrast texture is selected from any one of high-contrast texture, irregular and random texture, composite hierarchical texture and light and shadow interaction texture.

[0021] Preferably, the printing substrate is paper or PET material.

[0022] The present application has the following technical effects compared with the prior art:

[0023] 1.The post-printing enhancement process manufacturing method provided by the present application can be replaced by the mature process of traditional silk screen printing and hot pressing, which is lower in cost, does not require additional equipment investment, and greatly improves yield and productivity. Compared with the existing three-dimensional crystal relief process, the present application solves the problems of dependence on special equipment and low yield, improves production efficiency, and reduces production cost.

[0024] 2.The post-printing enhancement process prepared by the post-printing enhancement process manufacturing method of the present application can restore finer edges and corners than traditional post-printing enhancement processes (depending on the processing precision of the relief hot stamping plate), achieve a finer effect comparable to or even better than the existing three-dimensional crystal relief process, and meet the market demand for high-quality appearance of printed matter. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 Flow chart of the post-printing enhancement process manufacturing method of an embodiment; DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] The purpose of the present application is to provide a post-printing enhancement process manufacturing method to achieve the purpose of cost reduction and efficiency improvement.

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] REFERENCE Figure 1 The technical problem to be solved by the present application is to provide a post-printing enhancement process manufacturing method that can achieve a clear three-dimensional post-printing effect through traditional silk screen printing and hot pressing equipment and process without relying on special equipment. The method includes the following steps:

[0031] Step S10: providing a varnish layer on the printing material.

[0032] Optionally, the varnish layer is provided by silk screen printing or gravure printing.

[0033] In the embodiment, the setting mode of the gloss oil layer is screen printing, and the gloss oil layer is cured by UV light.

[0034] Specifically, the prepared screen printing plate is used to screen print the UV gloss oil on the printing material, which can be paper, PET or other materials.

[0035] Optionally, the screen printing process uses a screen printing plate with a mesh size of 100-200 meshes. A lower mesh size can ensure the thickness of the screen printed gloss oil, so as to present a higher relief three-dimensional texture in the subsequent embossing.

[0036] Step S20: semi-curing the gloss oil layer to obtain an intermediate gloss oil layer.

[0037] Specifically, the gloss oil is in a semi-cured state by controlling the power of the UV lamp, the irradiation time and the light curing speed. The semi-cured gloss oil is preliminarily shaped and can form the required texture in the subsequent embossing process.

[0038] Further, different semi-curing degrees of the gloss oil layer have different texture effects:

[0039] When the semi-curing degree of the UV gloss oil is 60%-70%, the gloss oil layer has strong flexibility, and excellent texture effects can be obtained in embossing.

[0040] When the semi-curing degree of the UV gloss oil is 70%-80%, the surface layer of the gloss oil layer has a certain rigidity, and the UV gloss oil surface can produce irregular micro-cracks in embossing. The irregular micro-cracks can occur diffuse reflection under the action of light, thereby weakening the texture effect in vision.

[0041] In a preferred embodiment, a mask layer is arranged above the UV gloss oil layer when the semi-curing treatment is performed. The local semi-curing degree of the UV gloss oil is controlled by the mask layer, so that the semi-curing degree of the UV gloss oil in some areas is 60%-70%, and the semi-curing degree in some areas is 70%-80%. Thus, after the embossing texture is completed, the areas with high semi-curing degree and the areas with low semi-curing degree form an optical contrast effect. When specific graphics are arranged on the mask layer, the optical contrast can produce an anti-counterfeiting effect.

[0042] Step S30: embossing the intermediate gloss oil layer and curing to obtain a synergistic gloss oil layer.

[0043] In this embodiment, the texture is obtained by die pressing with a gilding machine, and the die plate can be a relief gilding plate. The design of the gilding plate directly determines the texture effect of the final printed product, and therefore needs to be accurately designed and manufactured.

[0044] Specifically, the UV varnish in a semi-solid state is die pressed with a relief gilding plate using a gilding machine. During the die pressing process, parameters such as the pressure and temperature of the gilding machine can be adjusted according to the characteristics of the varnish and the requirements of the gilding plate to ensure the clarity and integrity of the texture. After the texture die pressing is completed, the varnish is secondarily cured and shaped using a UV lamp to completely cure the UV varnish, form stable texture and effect, and improve the durability and quality of the printed product.

[0045] Preferably, the texture is a visual contrast texture, which can be selected from, but not limited to:

[0046] 1. High-contrast texture, which creates a visual impact by combining the printed color of the bottom layer to form a strong difference in light and shade or color contrast. Optionally, the high-contrast texture includes, but is not limited to, black-and-white contrast texture, color contrast texture, and light-and-shade alternating texture. Specifically:

[0047] Black-and-white contrast texture: such as checkerboard, zebra stripes, etc., which produces a strong contrast through extreme light and shade differences;

[0048] Color contrast texture: using complementary colors (such as red and green, blue and orange) or texture patterns of warm and cool color combinations;

[0049] Light-and-shade alternating texture: such as bar code type black-and-white alternating stripes, which can produce a strong rhythm and visual guidance.

[0050] 2. Irregular and random texture, which creates a visual surprise by breaking the regular arrangement of the texture. Optionally, the irregular and random texture includes, but is not limited to: randomly distributed dots or lines, natural irregular texture, and dynamic deformation texture. Specifically:

[0051] Randomly distributed dots or lines: avoiding regular arrangement to reduce visual fatigue;

[0052] Natural irregular texture: such as crack lines, tree bark lines, rock lines, etc., which enhance the contrast with smooth surfaces due to their disorder;

[0053] Dynamic deformation texture: such as twisted grid or flowing lines, which produces a dynamic contrast in vision.

[0054] 3. Compound hierarchical texture, which creates a depth contrast by superimposing multiple textures. Optionally, the compound hierarchical texture includes, but is not limited to: rough and smooth contrast, three-dimensional and planar contrast, and detail density contrast. Specifically:

[0055] Rough vs. smooth: juxtapose rough sandpaper texture with mirror-smooth surface.

[0056] Volume vs. plane: use normal mapping to create contrast between virtual relief and real plane.

[0057] Detail density: juxtapose dense texture areas with sparse areas, such as the contrast between the scales of a dragon and the smoothness of the bamboo joints.

[0058] 4. Light and shadow interaction texture, which enhances the texture contrast by using light changes. Optionally, the light and shadow interaction texture includes but is not limited to: high-reflective texture, concave-convex texture, and dynamic light and shadow texture, specifically:

[0059] High-reflective texture: juxtapose the metallic luster with the matte surface.

[0060] Concave-convex texture: emphasize the three-dimensional effect by highlighting the shadow changes, such as the protrusions of the brick wall and the concave of the brick joints.

[0061] Dynamic light and shadow texture: the texture presents different visual effects under light changes, such as the dragon and bamboo scales appearing to be flipped by the wind.

[0062] The prior art such as the Digital Gaudi Post-Printing Enhancement and the Stereoscopic Crystal Relief Process either has technical limitations, such as the inability to restore fine edges, or relies on special-purpose equipment. The present application is based on traditional silk-screen printing and embossing processes, and through reasonable process flow design and parameter control, it achieves the purpose of post-printing enhancement. Its structure does not depend on specific special-purpose equipment, has stronger universality and flexibility, and can be implemented on ordinary printing production lines.

[0063] The following are specific examples.

[0064] Example 1

[0065] The present example provides a post-printing enhancement process manufacturing method, comprising the following steps:

[0066] (1) Use a 100-mesh screen to set a UV varnish layer on the printing substrate.

[0067] (2) Control the intensity and illumination time of the UV light to make the UV varnish layer in a semi-cured state, and obtain an intermediate varnish layer. In this example, the UV light semi-curing degree is 60%.

[0068] (3) Use a gilding machine and a pre-made relief gilding plate to emboss the texture on the intermediate varnish layer, and obtain an enhanced varnish layer. In this example, the texture is a black-and-white contrast texture.

[0069] The post-printing enhancement process manufactured by the post-printing enhancement process manufacturing method described above can achieve the following beneficial technical effects:

[0070] 1. The post-printing enhancement process manufacturing method provided by the present application can be replaced by the mature process of traditional silk screen printing and hot stamping, which has lower cost, no additional equipment investment, and greatly improved yield and capacity. Compared with the existing three-dimensional crystal relief process, the problems of relying on special equipment and low yield are solved, the production efficiency is improved, and the production cost is reduced.

[0071] 2. The post-printing enhancement process prepared by the post-printing enhancement process manufacturing method can restore finer edges and corners than traditional post-printing enhancement processes (depending on the processing precision of the relief stamping plate), achieving a finer effect comparable to or even better than the existing three-dimensional crystal relief process, meeting the market demand for high-quality appearance of printed matter.

[0072] Example 2

[0073] The present embodiment provides a post-printing enhancement process manufacturing method, comprising the following steps:

[0074] (1) A UV varnish layer is provided on the printing material using a 200 mesh screen plate.

[0075] (2) A mask layer is provided above the varnish layer, and by controlling the intensity and illumination time of UV light, the UV varnish layer is in a semi-cured state to obtain an intermediate varnish layer. In this embodiment, the semi-cured degree of the UV varnish in most areas is 65%, and the semi-cured degree of the UV varnish in local areas is 75%.

[0076] (3) The intermediate varnish layer is textured by a hot stamping machine and a pre-made relief stamping plate to obtain an enhancement varnish layer. In this embodiment, the texture is a light and shadow interactive texture.

[0077] The post-printing enhancement process manufactured by the above post-printing enhancement process manufacturing method forms an optical contrast effect between the area with high semi-cured degree and the area with low semi-cured degree after completing the texture molding. When specific graphics are provided on the mask layer, the optical contrast can produce an anti-counterfeiting effect.

[0078] The principles and implementation methods of the present application are described by specific examples in the present application. The above examples are only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation methods and application scope will be changed. In view of the above, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A method for producing a post-printing efficiency enhancement process, characterized in that: The following steps are involved: Providing a varnish layer on the substrate; semi-curing the varnish layer to obtain an intermediate varnish layer; The intermediate varnish layer is subjected to molded texture and cured to obtain a synergistic varnish layer.

2. The method for producing the post-printing efficiency enhancement process according to claim 1, characterized in that: The varnish layer is provided by silk screen printing.

3. The method for producing the post-printing efficiency enhancement process according to claim 2, characterized in that: The number of screen plates used in the silk screen printing is 100 to 200 meshes.

4. The method for producing a post-printing efficiency enhancement process according to claim 1, characterized in that: The texture is obtained by stamping with a hot stamping machine.

5. The method for producing a post-printing efficiency enhancement process according to claim 1, characterized in that: The varnish layer is obtained by curing UV varnish.

6. The method for producing the post-printing efficiency enhancement process according to claim 5, characterized in that: In the step of semi-curing the varnish layer, the semi-curing degree of the UV varnish is 60%-70%.

7. The method for producing the post-printing efficiency enhancement process according to claim 5, characterized in that: In the step of semi-curing the varnish layer, a mask layer is provided above the varnish layer to make the semi-curing degree of the UV varnish in most areas 60%-70% and the semi-curing degree in some areas 70%-80%.

8. The method for producing the post-printing efficiency enhancement process according to claim 6 or 7, characterized in that: The texture is a visual contrast texture.

9. The method for producing the post-printing efficiency enhancement process according to claim 8, characterized in that: The visual contrast texture is selected from any one of high contrast texture, irregular and random texture, composite layered texture and light and shadow interactive texture.

10. The method for manufacturing a post-printing efficiency enhancement process according to claim 1, characterized in that: The printing substrate is made of paper or PET.

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