A gold wire micro net film suitable for heating of organic glass and a preparation method thereof

Abstract

This invention relates to a gold wire micromesh film suitable for heating acrylic glass and its preparation method, belonging to the field of electrothermal glass technology. It includes a substrate, a second photoresist layer on top of the substrate, and a plurality of second microgrooves extending through the top of the second photoresist layer, penetrating both sides and the bottom of the second photoresist layer. An electroplated layer is disposed within each of the second microgrooves. A first photoresist layer is disposed on the top of the electroplated layer and the top of the second photoresist layer, and a plurality of first microgrooves extending through the top of the first photoresist layer, penetrating both sides and the bottom of the first photoresist layer. The first and second microgrooves are interconnected, and a conductive layer is disposed within each of the first microgrooves. This application facilitates the heating of acrylic glass.

Description

Technical Field

[0001] This invention relates to the field of electrothermal glass technology, and in particular to a gold wire micromesh film suitable for heating acrylic glass and its preparation method. Background Technology

[0002] Glass materials are mainly divided into two categories: organic and inorganic. Organic glass has broad application prospects due to its advantages such as light weight, high transparency, and good processing performance. However, compared with inorganic glass, organic glass has obvious disadvantages in terms of thermal conductivity and temperature resistance.

[0003] When organic glass is used to manufacture electrically heated glass, metal wires or ITO films are still currently used as heating elements. If metal wires are used, they need to reach high temperatures to conduct heat to the glass surface, which can easily damage the interlayer film and organic materials. While using existing ITO films avoids the problem of localized overheating, the bonding between ITO films and organic materials is weak, and due to the significant difference in their coefficients of linear expansion, thermal expansion mismatch can easily occur during heating, leading to film cracking and detachment, and ultimately, loss of electrical heating performance. Summary of the Invention

[0004] To facilitate the heating of acrylic glass, this application provides a gold wire micromesh film suitable for heating acrylic glass and its preparation method.

[0005] The method for preparing gold wire micromesh film suitable for heating acrylic glass provided in this application adopts the following technical solution:

[0006] A method for preparing gold wire micromesh film suitable for heating acrylic glass includes the following steps:

[0007] Step S1: The PET film is sequentially cleaned, degreased, dried, and surface modified.

[0008] Step S2: The PET film passes through a first U-shaped groove containing a first photocurable solution, and the first photocurable solution is coated on the surface of the PET film;

[0009] Step S3: Process a plurality of first microgrooves on the PET film obtained in step S2 to form a substrate having the first microgrooves;

[0010] Step S4: Deposit conductive material in the first microgroove to form a metal primary substrate;

[0011] Step S5: The metal primary layer substrate passes through a second U-shaped groove containing a second photocurable solution, and the second photocurable solution is coated on the substrate with a conductive layer;

[0012] Step S6: Process a plurality of second microgrooves on the substrate obtained in step S5 to form a substrate with second microgrooves;

[0013] Steps S7 and S6 obtain the substrate passing through the electroplating bath, where metal material is electroplated in the second micro-groove to form a PET substrate with metal microgrids.

[0014] Step S8: The metal microgrid is detached from the PET substrate and transferred to the PVB or PU substrate;

[0015] Step S9: If the metal microgrid is transferred to the PVB substrate, a PVB substrate with metal microgrid is formed. The PVB substrate with metal microgrid is covered with a plastic film and then wound into shape. If the metal microgrid is transferred to the PU substrate, a PU substrate with metal microgrid is formed. The PU substrate with metal microgrid is covered with a plastic film and then wound into shape.

[0016] Preferably, step S3 includes the following steps: the PET film with the first photocurable solution attached passes between the impression roller and the first exposure device, and the PET film with the first photocurable solution attached is located on the first transparent glass plate. When the PET film contacts the impression roller and is subjected to pressure, the first exposure device is started synchronously. The first exposure device uses light of a specific wavelength to penetrate the first transparent glass plate to selectively cure the first photocurable solution, forming a substrate with the first microgroove.

[0017] Preferably, in step S3, the imprinting roller is positioned opposite to the first exposure device, the outer wall of the imprinting roller is covered with a non-stick coating, the PET film with the first photocurable solution attached is located below the imprinting roller, and the first transparent glass plate is located above the first exposure device.

[0018] By adopting the above technical solution, the raised pattern on the imprinting roller forms a corresponding groove on the PET film, and the first exposure device irradiates the first photocurable solution on the PET film to cure the irradiated first photocurable solution.

[0019] Preferably, step S4 includes the following steps:

[0020] Step S41: Conductive material is deposited on the substrate obtained in step S3;

[0021] Step S42: Polish the substrate obtained in step S41, retaining only the conductive material in the first microgroove to form a metal primary substrate.

[0022] Preferably, step S6 includes the following steps: the substrate with the second photocurable solution attached is located on the second transparent glass plate, the second exposure device uses light of a specific wavelength to penetrate the second transparent glass plate to cure the second photocurable solution, and then the substrate is cleaned to form a substrate with the second microgroove.

[0023] By adopting the above technical solution, the second photocurable solution that is not blocked by the conductive material is cured under the irradiation of light, while the second photocurable solution that is blocked by the conductive material is washed away.

[0024] The gold wire micromesh film suitable for heating acrylic glass provided in this application adopts the following technical solution:

[0025] A gold wire micromesh film suitable for heating acrylic glass includes a substrate. A second photoresist layer is disposed on the top of the substrate. A plurality of second microgrooves are formed through the top of the second photoresist layer, penetrating both sides and the bottom of the second photoresist layer. An electroplated layer is disposed within the second microgrooves. A first photoresist layer is disposed on the top of the electroplated layer and the top of the second photoresist layer. A plurality of first microgrooves are formed through the top of the first photoresist layer, penetrating both sides and the bottom of the first photoresist layer. The first and second microgrooves are interconnected. A conductive layer is disposed within the first microgrooves.

[0026] Preferably, the substrate is made of PVB or PU material.

[0027] Preferably, the number of the first microgrooves is the same as the number of the second microgrooves, the first microgrooves correspond one-to-one with the second microgrooves, the first microgrooves are located directly above the second microgrooves, the first microgrooves and the second microgrooves are parallel to each other, and the thickness of the first photoresist layer is less than the thickness of the second photoresist layer.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. Using PVB substrate with metal microgrids or PU substrate with metal microgrids as heating elements for plexiglass not only ensures uniform temperature distribution but also facilitates bonding with organic materials. Furthermore, it reduces the difference in the coefficient of linear expansion, minimizes cracking of the heating element, improves the compatibility between the heating element and organic materials, and facilitates the heating of plexiglass.

[0030] 2. After the PET film is cleaned, degreased, dried and surface modified in sequence, the contaminants, grease and moisture on the surface of the PET film are removed, while the bonding ability of the PET film with other materials is enhanced, and the cleanliness, flatness and adhesion of the PET film surface are improved. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a gold wire micromesh film suitable for heating plexiglass, as described in an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of a gold wire micromesh film preparation process suitable for heating plexiglass, as described in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures: 1. Substrate; 2. Second photoresist layer; 3. Second microgroove; 4. Electroplated layer; 5. First photoresist layer; 6. First microgroove; 7. Conductive layer. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0035] This application discloses a gold wire micromesh film suitable for heating acrylic glass. (See also...) Figure 1 The system includes a substrate 1, which is made of PVB or PU material. The top of the substrate 1 has a second photoresist layer 2 formed by a cured photocurable solution. The second photoresist layer 2 has several second microgrooves 3 extending through it. The second microgrooves 3 extend through both sides and the bottom of the second photoresist layer 2, and an electroplated metal layer 4 is formed within each of the second microgrooves 3. The top of the electroplated layer 4 and the top of the second photoresist layer 2 share a first photoresist layer 5 formed by a cured photocurable solution. The first photoresist layer 5 has several first microgrooves 6 extending through it. The first microgrooves 6 extend through both sides and the bottom of the first photoresist layer 5. The first microgrooves 6 and the second microgrooves 3 are interconnected, and a conductive material is deposited within each of the first microgrooves 6 to form a conductive layer 7. The number of first microgrooves 6 is the same as the number of second microgrooves 3, and there is a one-to-one correspondence between the first microgrooves 6 and the second microgrooves 3. The first microgroove 6 is located directly above the second microgroove 3. The first microgroove 6 and the second microgroove 3 are parallel to each other. The thickness of the first photoresist layer 5 is less than the thickness of the second photoresist layer 2.

[0036] The implementation principle of a gold wire micromesh film suitable for heating plexiglass in this application embodiment is as follows: a PVB substrate 1 with metal microgrids or a PU substrate 1 with metal microgrids is used as the heating element of plexiglass. This not only makes the temperature distribution uniform, but also facilitates the bonding with organic materials, reduces the difference in the coefficient of linear expansion, reduces the cracking of the heating element, improves the compatibility between the heating element and organic materials, and achieves the effect of facilitating the heating of plexiglass.

[0037] This application discloses a method for preparing a gold wire micromesh film suitable for heating acrylic glass. (Refer to...) Figure 1 and Figure 2 This includes the following steps:

[0038] Step S1: The PET film undergoes sequential cleaning, degreasing, drying, and surface modification treatments. This removes contaminants, grease, and moisture from the PET film surface. It also enhances the adhesion of the PET film to other materials and improves the cleanliness, smoothness, and adhesion of the PET film surface.

[0039] Step S2: The PET film passes through a first U-shaped groove containing a first photocurable solution, and the first photocurable solution is coated on the surface of the PET film.

[0040] Step S3: The PET film with the first photocurable solution attached passes between the impression roller and the first exposure device, and the PET film with the first photocurable solution attached is located on the first transparent glass plate. The PET film with the first photocurable solution attached is located below the impression roller, and the first transparent glass plate is located above the first exposure device. When the PET film contacts the impression roller and is subjected to pressure, the first exposure device starts synchronously. The raised pattern on the impression roller forms corresponding grooves on the PET film. Light of a specific wavelength penetrates the first transparent glass plate to selectively cure the first photocurable solution, forming a substrate with the first microgrooves. The impression roller and the first exposure device are arranged opposite each other, and the outer wall of the impression roller is covered with a non-stick coating. The first exposure device emits parallel light, and the intensity of the light source of the first exposure device gradually increases.

[0041] Step S4: Deposit conductive material in the first microgroove to form a metal primary substrate, including the following steps.

[0042] Step S41: The conductive material is deposited on the substrate obtained in step S3 using techniques such as sputtering, electroplating, and chemical vapor deposition.

[0043] Step S42: Use abrasive tools such as felt and abrasive paste to polish the substrate obtained in step S41, retaining only the conductive material in the first microgroove to form a metal primary substrate.

[0044] Step S5: The metal primary substrate passes through a second U-shaped groove containing a second photocurable solution, and the second photocurable solution is coated onto the substrate with a conductive layer.

[0045] Step S6: The substrate with the second photocurable solution attached is placed on the second transparent glass plate. The second exposure device uses light of a specific wavelength to penetrate the second transparent glass plate and cure the second photocurable solution. Afterward, the substrate is cleaned to form a substrate with the second microgrooves. Under the illumination of light, the second photocurable solution not blocked by the conductive material is cured, while the second photocurable solution blocked by the conductive material is cleaned away. The second exposure device emits parallel light, and the intensity of the light source gradually increases.

[0046] Steps S7 and S6 result in the substrate passing through an electroplating bath containing an electroplating solution with metallic materials. By applying an external current, the metal ions in the electroplating solution undergo a reduction reaction in a second micro-groove, depositing to form an electroplated layer, thus obtaining a PET substrate with metallic microgrids.

[0047] Step S8: Using hot pressing, ultraviolet curing, or adhesive transfer methods, the metal microgrids are transferred from the PET substrate to the PVB or PU substrate.

[0048] Step S9: If the metal microgrids are transferred onto a PVB substrate, a PVB substrate with metal microgrids is formed. A plastic film is then applied to the PVB substrate with metal microgrids before it is wound into shape. If the metal microgrids are transferred onto a PU substrate, a PU substrate with metal microgrids is formed. A plastic film is then applied to the PU substrate with metal microgrids before it is wound into shape. Covering the metal microgrids with the plastic film reduces the likelihood of adhesion, scratches, or contamination during storage and transportation.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for preparing gold wire micromesh film suitable for heating acrylic glass, characterized in that: Includes the following steps: Step S1: The PET film is sequentially cleaned, degreased, dried, and surface modified. Step S2: The PET film passes through a first U-shaped groove containing a first photocurable solution, and the first photocurable solution is coated on the surface of the PET film; Step S3: Process a plurality of first microgrooves on the PET film obtained in step S2 to form a substrate having the first microgrooves; Step S4: Deposit conductive material in the first microgroove to form a metal primary substrate; Step S5: The metal primary layer substrate passes through a second U-shaped groove containing a second photocurable solution, and the second photocurable solution is coated on the substrate with a conductive layer; Step S6: Process a plurality of second microgrooves on the substrate obtained in step S5 to form a substrate with second microgrooves; Steps S7 and S6 obtain the substrate passing through the electroplating bath, where metal material is electroplated in the second micro-groove to form a PET substrate with metal microgrids. Step S8: The metal microgrid is detached from the PET substrate and transferred to the PVB or PU substrate; Step S9: If the metal microgrid is transferred onto the PVB substrate, a PVB substrate with metal microgrid is formed. After covering the PVB substrate with metal microgrid with a plastic film, it is wound into shape. If the metal microgrids are transferred onto the PU substrate, a PU substrate with metal microgrids is formed. After covering the PU substrate with metal microgrids with a plastic film, it is wound into shape.

2. The method for preparing a gold wire micromesh film suitable for heating acrylic glass according to claim 1, characterized in that: Step S3 includes the following steps: the PET film with the first photocurable solution attached passes between the impression roller and the first exposure device, and the PET film with the first photocurable solution attached is located on the first transparent glass plate. When the PET film contacts the impression roller and is subjected to pressure, the first exposure device is started synchronously. The first exposure device uses light of a specific wavelength to penetrate the first transparent glass plate to selectively cure the first photocurable solution, forming a substrate with the first microgroove.

3. The method for preparing a gold wire micromesh film suitable for heating acrylic glass according to claim 2, characterized in that: In step S3, the imprint roller is positioned opposite to the first exposure device. In step S3, the outer wall of the imprint roller is covered with a non-stick coating. In step S3, the PET film with the first photocurable solution attached is located below the imprint roller. In step S3, the first transparent glass plate is located above the first exposure device.

4. The method for preparing a gold wire micromesh film suitable for heating acrylic glass according to claim 1, characterized in that: Step S4 includes the following steps: Step S41: Conductive material is deposited on the substrate obtained in step S3; Step S42: Polish the substrate obtained in step S41, retaining only the conductive material in the first microgroove to form a metal primary substrate.

5. The method for preparing a gold wire micromesh film suitable for heating acrylic glass according to claim 1, characterized in that: Step S6 includes the following steps: the substrate with the second photocurable solution attached is located on the second transparent glass plate, the second exposure device uses light of a specific wavelength to penetrate the second transparent glass plate to cure the second photocurable solution, and then the substrate is cleaned to form a substrate with the second microgroove.

6. A gold wire micromesh film suitable for heating acrylic glass, comprising a substrate, characterized in that: A second photoresist layer is disposed on the top of the substrate. A plurality of second microgrooves are formed through the top of the second photoresist layer. The second microgrooves penetrate both sides of the second photoresist layer and the bottom of the second photoresist layer. An electroplated layer is disposed within the second microgrooves. A first photoresist layer is disposed on the top of the electroplated layer and the top of the second photoresist layer. A plurality of first microgrooves are formed through the top of the first photoresist layer. The first microgrooves penetrate both sides of the first photoresist layer and the bottom of the first photoresist layer. The first microgrooves and the second microgrooves are interconnected. A conductive layer is disposed within the first microgrooves.

7. A gold wire micromesh film suitable for heating acrylic glass according to claim 6, characterized in that: The substrate is made of PVB or PU material.

8. A gold wire micromesh film suitable for heating acrylic glass according to claim 7, characterized in that: The number of the first microgrooves is the same as the number of the second microgrooves. The first microgrooves and the second microgrooves correspond one-to-one. The first microgrooves are located directly above the second microgrooves. The first microgrooves and the second microgrooves are parallel to each other. The thickness of the first photoresist layer is less than the thickness of the second photoresist layer.

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