CN112810341B - Preparation process of double-layer texture back shell - Google Patents

Preparation process of double-layer texture back shell Download PDF

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Publication number
CN112810341B
CN112810341B CN202110146072.7A CN202110146072A CN112810341B CN 112810341 B CN112810341 B CN 112810341B CN 202110146072 A CN202110146072 A CN 202110146072A CN 112810341 B CN112810341 B CN 112810341B
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China
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texture
plate
layer
dazzling
light
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CN202110146072.7A
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CN112810341A (en
Inventor
胡珊珊
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Dongguan Zhengguang Precision Technology Co ltd
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Dongguan Zhengguang Precision Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F5/00—Designs characterised by irregular areas, e.g. mottled patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Textile Engineering (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

The invention provides a preparation process of a double-layer texture back shell, which comprises the following steps: and (3) a step of: preparing a dazzling texture layer, namely: preparing a gradual change texture layer; thirdly,: and bonding the dazzling texture layer and the gradual change texture layer by using light-transmitting glue, and bonding a light-transmitting plate on the upper part of the dazzling texture layer. The invention adopts the texture display of the back shell with the double-layer composite effect of the gradual change effect and the bottom layer effect, and adds the texture display on the basis of the gradual change effect, so that the gradual change effect and the dazzling texture form the composite display, and the display diversity is increased.

Description

Preparation process of double-layer texture back shell
Technical Field
The invention relates to the technical field of back shells, in particular to a preparation process of a back shell of electronic equipment, and specifically relates to a preparation process of a double-layer texture back shell.
Background
Along with the development of electronic products, the appearance is lighter and thinner, the surface treatment of the electronic products is finer and finer, in order not to scratch the surface of the mobile phone, a back shell is often purchased for the surface of the electronic products, the existing back shell is generally made of transparent or colored semitransparent material flexible materials, and in the currently disclosed technology, reference is made to the following publication numbers: the patent CN111497512A discloses a preparation method of a single-layer gradient 3D dazzling texture decorative sheet, and the prepared single-layer gradient 3D dazzling texture decorative sheet is changed from a two-layer material composite structure into one layer, so that the production process of a product is reduced, the cost is reduced, the structure is thinner, and the ultrathin design trend of electronic products such as mobile phones is met; and the gradual change effect realizes diversification, can guarantee the stability of production color, and production efficiency is high.
But from the aspect of effect, the effect of gradual change of the single-layer gradual change color 3D dazzle texture decorative sheet is single, and the single-layer gradual change color 3D dazzle texture decorative sheet does not have rich dazzle effect.
Disclosure of Invention
The invention aims to provide a preparation process of a double-layer texture back shell.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a preparation process of a double-layer texture back shell comprises the following steps:
and (3) a step of: preparing a dazzling texture layer:
a1 A dazzling texture is printed on the substrate to prepare a mask plate;
a2 A layer of cauterizing layer is arranged on the mask plate with one surface with the dazzling texture, and a light transmission area and a light-proof area are formulated on the cauterizing layer according to the dazzling texture;
a3 Step A2), placing the mask plate into a photoetching machine for ultraviolet exposure, irradiating ultraviolet rays on the photoresist plate at the lower part of the mask plate through a light transmission area, and performing non-contact exposure on the mask plate position of the light transmission area with photoresist to enable the photoresist on the photoresist plate corresponding to the light transmission area to generate photochemical reaction;
a4 Step A3), completely immersing the mask plate into a developing solution for developing, and after the development is completed, flushing and drying by using plasma water, wherein the photoresist on the rubber plate corresponding to the light-transmitting area is dissolved and shed;
a5 Step A4), placing the substrate into a baking box for baking and shaping to form a dazzling texture layer;
and II: preparing a gradual change texture layer:
b1 Using photoresist as a master template, transferring the dazzling texture in the step A1) onto a PC board by using glue for reproduction into a sub-template, and transferring the dazzling texture onto a PET board by using the sub-template;
b2 Setting an effect graph to be graded by using graphic software, making the effect graph according to the dazzling texture, adjusting printing ink to be placed into a Heidelberg printing machine, and printing the graded effect on a CTP plate to form a graded texture layer;
b3 Placing the CTP plate on a UV curing machine for curing after the step B2), copying the CTP plate by using master glue to form a sub-plate after curing, performing at least one off-line curing on the copied sub-plate, taking the cured sub-plate as a die,
b4 Placing the PET plate in the step B1) in a die in the step B3), transferring the gradual change texture layer of the sub-plate onto the PET plate by using transfer glue, and plating an Ag layer on the other surface of the PET plate;
thirdly,: and bonding the dazzling texture layer and the Ag gradual change texture layer by using light-transmitting glue, and bonding a light-transmitting plate on the upper part of the dazzling texture layer.
Preferably, in step A2), the light-transmitting and light-impermeable regions are defined on the solder layer using a line width of 0.25 to 0.5 μm according to the glare texture.
Preferably, in step A3), the depth of the glare texture is controlled using the thickness of the photoresist plate.
Preferably, in step A5), the baking temperature is 100-150℃and the baking time is 20-40min.
Preferably, in step B2), a 5-50 μm CTP plate is used and the gradient effect is printed at least once on the CTP plate at the time of printing.
Preferably, in step B3), the CTP plate is placed on a UV curing machine for curing at least 3 times.
Preferably, the graded texture layer has a graded texture curve corresponding to the glare texture curve.
Preferably, the gradual texture curves are composed of a plurality of parallel curves which are sequentially from deep to light and have line width distances of 0.25-0.5 mu m in the same color according to the same direction.
Preferably, the gradual texture curve is composed of a plurality of parallel curves with the line width distance of 0.25-0.5 μm from deep to light in sequence with a plurality of colors in the same direction.
The invention adopts the texture display of the back shell with the double-layer composite effect of the gradual change effect and the bottom layer effect, and adds the texture display on the basis of the gradual change effect, so that the gradual change effect and the dazzling texture form the composite display, and the display diversity is increased.
Drawings
FIG. 1 is a general flow chart of the process of the present invention;
FIG. 2 is a process flow diagram of the preparation of a glare texture layer in accordance with the present invention;
FIG. 3 is a process flow diagram of the preparation of a graded texture layer according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, the present invention provides a process for preparing a double-layered textured back shell, comprising the steps of: and (3) a step of: preparing a dazzling texture layer:
a1 A dazzling texture is printed on the substrate to prepare a mask plate;
a2 A layer of cauterizing layer is arranged on the mask plate with one surface with the dazzling texture, and a light transmission area and a light-proof area are formulated on the cauterizing layer according to the dazzling texture;
a3 Step A2), placing the mask plate into a photoetching machine for ultraviolet exposure, irradiating ultraviolet rays on the photoresist plate at the lower part of the mask plate through a light transmission area, and performing non-contact exposure on the mask plate position of the light transmission area with photoresist to enable the photoresist on the photoresist plate corresponding to the light transmission area to generate photochemical reaction;
a4 Step A3), completely immersing the mask plate into a developing solution for developing, and after the development is completed, flushing and drying by using plasma water, wherein the photoresist on the rubber plate corresponding to the light-transmitting area is dissolved and shed;
a5 Step A4), placing the substrate into a baking box for baking and shaping to form a dazzling texture layer;
and II: preparing a gradual change texture layer:
b1 Using photoresist as a master template, transferring the dazzling texture in the step A1) onto a PC board by using glue for reproduction into a sub-template, and transferring the dazzling texture onto a PET board by using the sub-template;
b2 Setting an effect graph to be graded by using graphic software, making the effect graph according to the dazzling texture, adjusting printing ink to be placed into a Heidelberg printing machine, and printing the graded effect on a CTP plate to form a graded texture layer;
b3 Placing the CTP plate on a UV curing machine for curing after the step B2), copying the CTP plate by using master glue to form a sub-plate after curing, performing at least one off-line curing on the copied sub-plate, taking the cured sub-plate as a die,
b4 Placing the PET plate in the step B1) in the die in the step B3), transferring the gradual change texture layer of the sub-plate onto the PET plate by using transfer glue, and plating an Ag layer on the other surface of the PET plate;
thirdly,: and bonding the dazzling texture layer and the Ag gradual change texture layer by using light-transmitting glue, and bonding a light-transmitting plate on the upper part of the dazzling texture layer.
Preferably, in step A2), the light-transmitting and light-impermeable regions are defined on the solder layer using a line width of 0.25 to 0.5 μm according to the glare texture.
Preferably, in step A3), the depth of the glare texture is controlled using the thickness of the photoresist plate.
Preferably, in step A5), the baking temperature is 100-150℃and the baking time is 20-40min.
Preferably, in step B2), a 5-50 μm CTP plate is used and the gradient effect is printed at least once on the CTP plate at the time of printing. .
Preferably, in step B3), the CTP plate is placed on a UV curing machine for curing at least 3 times.
Preferably, the graded texture layer has a graded texture curve corresponding to the glare texture curve.
Preferably, the gradual texture curves are composed of a plurality of parallel curves which are sequentially from deep to light and have line width distances of 0.25-0.5 mu m in the same color according to the same direction.
Preferably, the gradual texture curve is composed of a plurality of parallel curves with the line width distance of 0.25-0.5 μm from deep to light in sequence with a plurality of colors in the same direction.
Example 1
In the concrete implementation and preparation, the following process is selected,
a preparation process of a double-layer texture back shell comprises the following steps:
and (3) a step of: preparing a dazzling texture layer:
a1 The high-transparency dazzling texture is selected to finish drawing of the dazzling texture on the substrate, a mask plate is manufactured, the mask plate is made of soda glass, one surface of the soda glass contains a chromium layer, a light transmission area and a light-tight area are made on the chromium layer according to the graph of the dazzling texture, and the wide line distance is generally 0.25um to 0.5um;
a2 Ultraviolet exposure is carried out by a photoetching machine manufactured by China academy of sciences, a photoresist plate (the thickness of the photoresist plate determines the depth of texture) is arranged below the mask plate, ultraviolet irradiates the photoresist plate through the light transmission area, non-contact exposure is carried out on the blank mask plate with the photoresist plate (namely non-contact exposure is carried out on the position of the mask plate with the light transmission area of the photoresist), and a required pattern area on the mask plate is irradiated to enable the photoresist in the area to have photochemical reaction;
a3 Completely immersing the mask plate after the exposure in the step 2) into a developing solution for development, then washing with deionized water, drying, and dissolving and falling off the photoresist in the exposure area after the development and drying to expose the lower chromium layer, wherein the soluble area on the photoresist is dissolved by a chemical developer, and the photoresist in the non-exposure area is not subjected to chemical reaction during the exposure, so that the acid-base neutralization does not exist during the development, and the photoresist in the non-exposure area is reserved;
a4 Baking and shaping the product after the step 3), so that the lines are smooth, the whole product is soft, and the baking temperature is 135 ℃ for 30min, and the actual texture content is taken as the standard;
and II: preparing a gradual change texture layer:
b1 Transferring the dazzling texture of the step A1) to a PC board by using glue to form a sub-plate, copying the fine structure of the texture by using the ultraviolet curing phenomenon, and similarly transferring the texture to a PET board (or a required material) by using the sub-plate, wherein three-edge positioning is required during transfer, the distance of a glue inlet is required to be consistent with the distance of a lithography typesetting (calculating a lithography nip), otherwise, the position is not matched, and the size of a cut glue outlet is required to be consistent with the size of a machine material of a lithography machine;
b2 Drawing the wanted gradual change effect on drawing software, washing a machine for lithographic gradual change, loading a CTP plate on the machine, pouring ink, printing gradual change by using a lithographic four-color machine, placing a material with textures on a feed inlet, pressing a start key to print on the CTP plate, and if the printing is not deep enough for the first time, continuing adding the machine times, wherein the lithographic printer adopts a five-seat (CMYK+ special) printer or a Heidelberg seven-seat (CMYK+3 special) printer of a high fort.
B3 Placing the CTP plate on a UV curing machine for curing after the step B2), and copying the CTP plate by using master glue to form a sub-plate after the CTP plate is cured, wherein the copied sub-plate is subjected to at least one off-line curing, and the cured sub-plate is used as a die;
b4 Placing the PET plate in the step B1) in a die in the step B3), transferring the Ag gradual change texture layer of the sub-plate onto the PET plate by using transfer glue, and plating an Ag layer on the other surface of the PET plate;
thirdly,: and bonding the dazzling texture layer and the Ag gradual change texture layer by using light-transmitting glue, and bonding a light-transmitting plate on the upper part of the dazzling texture layer.
The structure of the plate prepared by using the gradual change texture is as follows: the uppermost layer is a light-transmitting plate, the lower part of the base material is provided with a dazzling texture, and the lower part of the dazzling texture is provided with a gradual change effect layer.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.

Claims (9)

1. The preparation process of the double-layer texture back shell is characterized by comprising the following steps of:
and (3) a step of: preparing a dazzling texture layer:
a1 A dazzling texture is printed on the substrate to prepare a mask plate;
a2 A layer of cauterizing layer is arranged on the mask plate with one surface with the dazzling texture, and a light transmission area and a light-proof area are formulated on the cauterizing layer according to the dazzling texture;
a3 Step A2), placing the mask plate into a photoetching machine for ultraviolet exposure, irradiating ultraviolet rays on the photoresist plate at the lower part of the mask plate through a light transmission area, and performing non-contact exposure on the mask plate position of the light transmission area with photoresist to enable the photoresist on the photoresist plate corresponding to the light transmission area to generate photochemical reaction;
a4 Step A3), completely immersing the mask plate into a developing solution for developing, and after the development is completed, flushing and drying by using plasma water, wherein the photoresist on the rubber plate corresponding to the light-transmitting area is dissolved and shed;
a5 Step A4), placing the substrate into a baking box for baking and shaping to form a dazzling texture layer;
and II: preparing a gradual change texture layer:
b1 Using photoresist as a master template, transferring the dazzling texture in the step A1) onto a PC board by using glue for reproduction into a sub-template, and transferring the dazzling texture onto a PET board by using the sub-template;
b2 Setting an effect graph to be graded by using graphic software, making the effect graph according to the dazzling texture, adjusting printing ink to be placed into a Heidelberg printing machine, and printing the graded effect on a CTP plate to form a graded texture layer;
b3 Placing the CTP plate on a UV curing machine for curing after the step B2), copying the CTP plate by using master glue to form a sub-plate after curing, performing at least one off-line curing on the copied sub-plate, taking the cured sub-plate as a die,
b4 Placing the PET plate in the step B1) in the die in the step B3), transferring the gradual change texture layer of the sub-plate onto the PET plate by using transfer glue, and plating an Ag layer on the other surface of the PET plate;
thirdly,: and bonding the dazzling texture layer and the Ag gradual change texture layer by using light-transmitting glue, and bonding a light-transmitting plate on the upper part of the dazzling texture layer.
2. The process for producing a double-textured back shell according to claim 1, wherein in step A2), the light-transmitting region and the light-impermeable region are defined on the baked layer according to the glare texture using a line width of 0.25 to 0.5 μm.
3. The process for preparing a double-textured back shell according to claim 1, wherein in step A3), the depth of the glare texture is controlled by using the thickness of the photoresist plate.
4. The process for preparing a double-textured back shell according to claim 1, wherein in step A5), the baking temperature is 100-150 ℃ and the baking time is 20-40min.
5. The process for preparing a double-textured back shell according to claim 1, characterized in that in step B2) a CTP plate of 5-50 μm is used and in printing the gradient effect is printed at least once on the CTP plate.
6. The process for preparing a double-textured back shell according to claim 1, wherein in step B3), the CTP plate is cured at least 3 times on a UV curing machine.
7. The process for preparing a double-layered textured back shell of claim 1, wherein the graded texture layer has a graded texture curve corresponding to a glare texture curve.
8. The process for preparing a double-layered textured back shell according to claim 7, wherein the gradual texture curves are composed of a plurality of parallel curves with line width ranging from 0.25 μm to 0.5 μm from deep to shallow sequentially in the same color in the same direction.
9. The process of claim 7, wherein the gradual texture curve is composed of a plurality of parallel curves with line width of 0.25-0.5 μm from deep to light in a plurality of colors in the same direction.
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CN114012954A (en) * 2021-11-02 2022-02-08 东莞正广精密科技有限公司 Double-layer texture process

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