WO2020168640A1 - 电磁屏蔽导电布的制作工艺 - Google Patents

电磁屏蔽导电布的制作工艺 Download PDF

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WO2020168640A1
WO2020168640A1 PCT/CN2019/086816 CN2019086816W WO2020168640A1 WO 2020168640 A1 WO2020168640 A1 WO 2020168640A1 CN 2019086816 W CN2019086816 W CN 2019086816W WO 2020168640 A1 WO2020168640 A1 WO 2020168640A1
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layer
screen printing
copper
transport
silicone oil
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PCT/CN2019/086816
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English (en)
French (fr)
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盛健
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南通盛州电子科技股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B41M1/12—Stencil printing; Silk-screen printing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements

Definitions

  • the present invention relates to the technical field of preparation of conductive cloth, in particular to the manufacturing process of electromagnetic shielding conductive cloth.
  • Conductive cloth is made of fiber cloth as the base material. After pre-treatment, electroplated metal coating is applied to make it have metallic characteristics and become conductive fiber cloth. It can be divided into: nickel-plated conductive cloth, gold-plated conductive cloth, carbon-plated conductive cloth, aluminum foil Fiber composite cloth, there are plain weave and grid distinction in appearance, etc.
  • Conductive cloth can be used for professional shielding work clothes for electronic, electromagnetic and other high-radiation work, special shielding cloth for shielding rooms; special cloth for shielding parts in the IT industry, popular touch screen gloves, anti-radiation curtains, etc.
  • the conductive cloth prepared by the prior art has a relatively large thickness and a relatively high weight due to the metal layer being plated, and it is very bulky when used for shielding work clothes, which is not conducive to the operation of users.
  • the purpose of the present invention is to provide a manufacturing process of electromagnetic shielding conductive cloth, prepare an ultra-thin electromagnetic shielding conductive cloth, which can effectively reduce the thickness of the conductive layer and improve the shielding effect.
  • the present invention provides a manufacturing process of electromagnetic shielding conductive cloth, which includes the following steps:
  • Pretreatment The fiber cloth layer is subjected to plasma glow discharge treatment at least once, and then the cloth after plasma glow discharge treatment is heated and dried at a heating temperature of 100-150°C and a heating time of more than 48 hours;
  • the thickness of the copper-tin alloy layer is 0.001 ⁇ 0.015mm; for the polydimethyl silicone oil layer and the polyester film layer, the baking temperature of the drying box is 55-65°C, and the baking temperature is high temperature after baking for 20 minutes. It is 140-180°C, the baking time is 30min-60min, and then slowly cooled to room temperature.
  • the equipment of the screen printing process includes a screen printing plate, a frame and a squeegee.
  • the screen printing plate is installed in the middle of the frame, and the substrate is placed on the printing table.
  • the screen printing plate is placed on the substrate, and the screen printing plate is placed on the substrate.
  • the raw materials are squeezed from the mesh to the substrate by the scraper, and the printed substrate is heated , To decompose the copper-tin compound into a copper-tin alloy layer.
  • the heating temperature of the screen printing drying oven is 200 ⁇ 350°C, the heating time is more than 48 hours, and then it slowly drops to room temperature.
  • the remaining coating adopts the method of turning from low temperature to high temperature, and then slowly dropping to room temperature.
  • the ratio of copper to tin in the copper-tin alloy is 1:1-3:1.
  • Screen printing refers to the use of silk screen as a plate base, and through the photosensitive plate making method, made into a screen printing plate with graphics and text.
  • Screen printing consists of five major elements, screen printing plate, squeegee, ink, printing table and substrate. Use the basic principle that the mesh of the graphic part of the screen printing plate can penetrate the ink, and the mesh of the non-graphic part cannot penetrate the ink for printing.
  • the circuit layer adopts a screen-printed mesh copper-tin alloy.
  • the screen printing process has lower cost and higher production efficiency; the polydimethyl silicone oil layer bonding fiber
  • the cloth layer and polyester film layer, the polyester film layer provides the base for the screen printing of the copper-tin alloy circuit layer, and its thickness is thin, which can effectively reduce the cost and weight; the flame-retardant fiber cloth layer can be used as a fabric to prevent fire , Improve the safety performance of conductive cloth.
  • Figure 1 is a schematic diagram of the screen printing structure of the present invention.
  • the manufacturing process of the electromagnetic shielding conductive cloth of the present invention includes the following steps:
  • Pretreatment The fiber cloth layer is subjected to plasma glow discharge treatment at least once, and then the cloth after plasma glow discharge treatment is heated and dried at a heating temperature of 100-150°C and a heating time of more than 48 hours;
  • the thickness of the copper-tin alloy layer is 0.001 ⁇ 0.015mm; for the polydimethyl silicone oil layer and the polyester film layer, the baking temperature of the drying box is 55-65°C, and the baking temperature is high temperature after baking for 20 minutes. It is 140-180°C, the baking time is 30min-60min, and then slowly cooled to room temperature.
  • the equipment of the screen printing process includes a screen printing plate, a frame and a squeegee.
  • the screen printing plate is installed in the middle of the frame, and the substrate is placed on the printing table.
  • the screen printing plate is placed on the substrate, and the screen printing plate is placed on the substrate.
  • the raw materials are squeezed from the mesh to the substrate by the scraper, and the printed substrate is heated , To decompose the copper-tin compound into a copper-tin alloy layer.
  • the heating temperature of the screen printing drying oven is 200 ⁇ 350°C, the heating time is more than 48 hours, and then it slowly drops to room temperature.
  • the remaining coating adopts the method of turning from low temperature to high temperature, and then slowly dropping to room temperature.
  • the ratio of copper to tin in the copper-tin alloy is 1:1-3:1.
  • Screen printing refers to the use of silk screen as a plate base, and through the photosensitive plate making method, made into a screen printing plate with graphics and text.
  • Screen printing consists of five major elements, screen printing plate, squeegee, ink, printing table and substrate. Use the basic principle that the mesh of the graphic part of the screen printing plate can penetrate the ink, and the mesh of the non-graphic part cannot penetrate the ink for printing.
  • the circuit layer adopts a screen-printed mesh copper-tin alloy.
  • the screen printing process has lower cost and higher production efficiency; the polydimethyl silicone oil layer bonding fiber
  • the cloth layer and polyester film layer, the polyester film layer provides the base for the screen printing of the copper-tin alloy circuit layer, and its thickness is thin, which can effectively reduce the cost and weight; the flame-retardant fiber cloth layer can be used as a fabric to prevent fire , Improve the safety performance of conductive cloth.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

电磁屏蔽导电布的制作工艺，包括以下步骤：1、预处理；2、在纤维布层上覆盖第一聚二甲基硅油层；3、烘干；4、在第一聚二甲基硅油层上覆盖聚脂薄膜层；5、烘干；6、输送至丝网印刷区在聚脂薄膜层上形成铜锡合金层；7、在铜锡合金层上覆盖第二聚二甲基硅油层；8、烘干；9、在第二聚二甲基硅油层外侧覆盖阻燃纤维布层。该电磁屏蔽导电布的制作工艺中，电路层采用丝网印刷的网状铜锡合金，丝网印刷工艺较之电镀工艺成本更低、生产效率更高；聚二甲基硅油层粘接纤维布层与聚酯薄膜层，聚酯薄膜层提供铜锡合金电路层丝网印刷的基底，其厚度较薄，可有效降低成本和重量；设置阻燃纤维布层，可作为面料使用，防止着火，提高导电布的安全性能。

Description

电磁屏蔽导电布的制作工艺 技术领域
本发明涉及导电布的制备技术领域，特别涉及电磁屏蔽导电布的制作工艺。
背景技术
导电布是以纤维布为基材，经过前置处理后施以电镀金属镀层使其具有金属特性而成为导电纤维布，可分为：镀镍导电布，镀金导电布，镀炭导电布，铝箔纤维复合布，外观上有平纹和网格区分等等。
导电布可用于从事电子，电磁等高辐射工作的专业屏蔽工作服，屏蔽室专用屏蔽布；IT行业屏蔽件专用布，当下流行触屏手套，防辐射窗帘等。
采用现有技术制备的导电布，由于镀上金属层的缘故，其厚度较大，重量较高，用于屏蔽工作服，会非常笨重，不利于用户的操作。
发明内容
本发明的目的是提供一种电磁屏蔽导电布的制作工艺，制备一种超薄电磁屏蔽导电布，可有效降低导电层的厚度，提高屏蔽效果。
为实现上述目的，本发明提供了电磁屏蔽导电布的制作工艺，包括以下步骤：
1、预处理：将纤维布层进行至少一次等离子体辉光放电处理，再将经等离子体辉光放电处理后的布料加热烘干，加热温度为100～150℃，加热时间大于48小时；
2、将纤维布输送至涂布区，在纤维布层上覆盖第一聚二甲基硅油层；
3、输送至烘干箱中烘干；
4、输送至涂布区，在第一聚二甲基硅油层上覆盖聚脂薄膜层；
5、输送至烘干箱中烘干；
6、输送至丝网印刷区，在聚脂薄膜层上采用丝网印刷工艺印刷铜锡化合物的浆料，其中丝网印版为网状，印刷后的导电布送入烘干箱中进行加热固化，形成铜锡合金层；
7、输送至涂布区，在铜锡合金层外侧再覆盖一层第二聚二甲基硅油层；
8、输送至烘干箱中烘干；
9、输送至涂布区，在第二聚二甲基硅油层外侧覆盖阻燃纤维布层。
其中铜锡合金层厚度为0.001～0.015mm；对于聚二甲基硅油层以及聚脂薄 膜层，烘干箱的烘烤温度为55‐65℃，烘烤20min后进行高温烘烤，烘烤温度为140‐180℃，烘烤时间为30min‐60min，之后缓慢冷却至室温。
丝网印刷工艺的设备包括丝网印版、边框和刮板，丝网印版安装在边框中间，在印刷台上放置承印物，将丝网印版放置在承印物上，在丝网印版上倒入铜锡化合物的浆料，并用刮板对丝网印版上的原料施加压力并匀速移动，原料被刮板从网孔中挤压到承印物上，将印刷好的承印物进行加热，使铜锡化合物分解成铜锡合金层。
丝网印刷烘干箱加热温度为200～350℃，加热时间大于48小时，后缓慢降至室温。其余涂层采用低温转至高温，在缓慢降至室温的方法。
铜锡合金中铜和锡的比例为1:1‐3:1。
丝网印刷是指用丝网作为版基，并通过感光制版方法，制成带有图文的丝网印版。丝网印刷由五大要素构成，丝网印版、刮板、油墨、印刷台以及承印物。利用丝网印版图文部分网孔可透过油墨，非图文部分网孔不能透过油墨的基本原理进行印刷。印刷时在丝网印版的一端倒入油墨，用刮板对丝网印版上的油墨部位施加一定压力，同时朝丝网印版另一端匀速移动，油墨在移动中被刮板从图文部分的网孔中挤压到承印物上。
本发明的电磁屏蔽导电布的制作工艺，电路层采用丝网印刷的网状铜锡合金，丝网印刷工艺较之电镀工艺成本更低、生产效率更高；聚二甲基硅油层粘接纤维布层与聚酯薄膜层，聚酯薄膜层提供铜锡合金电路层丝网印刷的基底，其厚度较薄，可有效降低成本和重量；设置阻燃纤维布层，可作为面料使用，防止着火，提高导电布的安全性能。
附图说明
图1是本发明丝网印刷的结构示意图；
具体实施方式
下面结合附图详细说明本发明的优选技术方案。
本发明的电磁屏蔽导电布的制作工艺，包括以下步骤：
1、预处理：将纤维布层进行至少一次等离子体辉光放电处理，再将经等离子体辉光放电处理后的布料加热烘干，加热温度为100～150℃，加热时间大于48小时；
2、将纤维布输送至涂布区，在纤维布层上覆盖第一聚二甲基硅油层；
3、输送至烘干箱中烘干；
4、输送至涂布区，在第一聚二甲基硅油层上覆盖聚脂薄膜层；
5、输送至烘干箱中烘干；
6、输送至丝网印刷区，在聚脂薄膜层上采用丝网印刷工艺印刷铜锡化合物的浆料，其中丝网印版为网状，印刷后的导电布送入烘干箱中进行加热固化，形成铜锡合金层；
7、输送至涂布区，在铜锡合金层外侧再覆盖一层第二聚二甲基硅油层；
8、输送至烘干箱中烘干；
9、输送至涂布区，在第二聚二甲基硅油层外侧覆盖阻燃纤维布层。
其中铜锡合金层厚度为0.001～0.015mm；对于聚二甲基硅油层以及聚脂薄膜层，烘干箱的烘烤温度为55‐65℃，烘烤20min后进行高温烘烤，烘烤温度为140‐180℃，烘烤时间为30min‐60min，之后缓慢冷却至室温。
丝网印刷工艺的设备包括丝网印版、边框和刮板，丝网印版安装在边框中间，在印刷台上放置承印物，将丝网印版放置在承印物上，在丝网印版上倒入铜锡化合物的浆料，并用刮板对丝网印版上的原料施加压力并匀速移动，原料被刮板从网孔中挤压到承印物上，将印刷好的承印物进行加热，使铜锡化合物分解成铜锡合金层。
丝网印刷烘干箱加热温度为200～350℃，加热时间大于48小时，后缓慢降至室温。其余涂层采用低温转至高温，在缓慢降至室温的方法。
铜锡合金中铜和锡的比例为1:1‐3:1。
丝网印刷是指用丝网作为版基，并通过感光制版方法，制成带有图文的丝网印版。丝网印刷由五大要素构成，丝网印版、刮板、油墨、印刷台以及承印物。利用丝网印版图文部分网孔可透过油墨，非图文部分网孔不能透过油墨的基本原理进行印刷。印刷时在丝网印版的一端倒入油墨，用刮板对丝网印版上的油墨部位施加一定压力，同时朝丝网印版另一端匀速移动，油墨在移动中被刮板从图文部分的网孔中挤压到承印物上。
本发明的电磁屏蔽导电布的制作工艺，电路层采用丝网印刷的网状铜锡合金，丝网印刷工艺较之电镀工艺成本更低、生产效率更高；聚二甲基硅油层粘接 纤维布层与聚酯薄膜层，聚酯薄膜层提供铜锡合金电路层丝网印刷的基底，其厚度较薄，可有效降低成本和重量；设置阻燃纤维布层，可作为面料使用，防止着火，提高导电布的安全性能。

Claims (4)

  1. 电磁屏蔽导电布的制作工艺，其特征在于包括以下步骤：
    1)预处理：将纤维布层进行至少一次等离子体辉光放电处理，再将经等离子体辉光放电处理后的布料加热烘干，加热温度为100～150℃，加热时间大于48小时；
    2)将纤维布输送至涂布区，在纤维布层上覆盖第一聚二甲基硅油层；
    3)输送至烘干箱中烘干；
    4)输送至涂布区，在第一聚二甲基硅油层上覆盖聚脂薄膜层；
    5)输送至烘干箱中烘干；
    6)输送至丝网印刷区，在聚脂薄膜层上采用丝网印刷工艺印刷铜锡化合物的浆料，其中丝网印版为网状，印刷后的导电布送入烘干箱中进行加热固化，形成铜锡合金层；
    7)输送至涂布区，在铜锡合金层外侧再覆盖一层第二聚二甲基硅油层；
    8)输送至烘干箱中烘干；
    9)输送至涂布区，在第二聚二甲基硅油层外侧覆盖阻燃纤维布层。
  2. 如权利要求1所述的电磁屏蔽导电布的制作工艺，其特征在于：铜锡合金层厚度为0.001～0.015mm。
  3. 如权利要求1或2所述的电磁屏蔽导电布的制作工艺，其特征在于：对于聚二甲基硅油层以及聚脂薄膜层，烘干箱的烘烤温度为55‐65℃，烘烤20min后进行高温烘烤，烘烤温度为140‐180℃，烘烤时间为30min‐60min，之后缓慢冷却至室温。
  4. 如权利要求3所述的电磁屏蔽导电布的制作工艺，其特征在于：丝网印刷工艺的设备包括丝网印版、边框和刮板，丝网印版安装在边框中间，在印刷台上放置承印物，将丝网印版放置在承印物上，在丝网印版上倒入铜锡化合物的浆料，并用刮板对丝网印版上的原料施加压力并匀速移动，原料被刮板从网孔中挤压到承印物上，将印刷好的承印物进行加热，使铜锡化合物分解成铜锡合金层。
PCT/CN2019/086816 2019-02-18 2019-05-14 电磁屏蔽导电布的制作工艺 WO2020168640A1 (zh)

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