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特品特印刷设备有限公司

Tamprinter printing machinery group

 
 
 

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How to make pad plate  

2013-08-13 16:49:27|  分类: 技术 |  标签: |举报 |字号 订阅

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.Output film: Output film according to computer document provided by customer with laser output machine. You also ask expert output center to make film for you, most of pad film is positive. 

.Coating emulsion chemistry products :

a.   Washing clean the steel plate with depurative.

b.   Coating FUJI emulsion on the steel plate by hand, or dipping coating machine or spraying coating machine.

Note: some supply already coating emulsion with the steel plate.

. Dryingput the steel plate with emulsion into drying closet  at the temperature of 150 for 5-15 minute.

. Exposureput up the firm with glass press close the steel plate  in the UV exposure machine for 30Sec –1minute to exporsure.

. DevelopingDipping pad plate into the jar full of FUJI developer liquid for several minutes till displaying hidden image on the surface of emulsion. Then blowing it and removing water by compress air gun.

.Etching by handTaking one brush dipped with etching liquid and brushing the hidden image 3-5 times so that hidden image completely display. Some factory have no etching machine, please continue taking brush to brush for 30-50 seconds. Because etching operation only by hand, correct depth of pad plate only by experience.

 .Etching by machine:  Precision etching and half-tone drawing must be use spraying etching machine. Pad plate put into etching machine and is adsorbed by magnet installed on the frame within PVC etching box. Setting etching time and start etching machine till the machine stop automatically.

 Blowing: Take compress air gun to blow pad plate and confirm having no remain etching liquid.

.Measure depth: Standard depth is about 19-23 um. Fact depth must be according to customer request. More long etching time and deeper. Measure fact depth with depth measure meter.

1.用天那水或显影水将钢板彻底擦干净,用风吹干净灰尘,将调好感光浆倒入钢板面上。
2.将钢板放在上浆机上转动,使感光浆均匀覆盖在钢板面上。
3.把上好浆的钢板放入锔炉里,温度为150度,烤板时间为15分钟。
4.待钢板冷却后将菲林摆放在钢板面上用玻璃盖住进行暴光(时间30秒--1分钟)。
5.滴入显影水。时间为10秒,用清水冲干净钢板,再用风吹干钢板水分。
6.吹干水分后,用胶纸粘在不用蚀刻的位置上然后补沙孔。
7.倒入蚀刻水进行蚀刻时间为1.8分钟。
8.用水冲去蚀刻水,撕掉胶纸擦去感光浆,制作完成。



蚀刻制作移印钢常见问题及原因
一、显影时感光浆脱落或暴烈
A、烘板时间过长或温度太高 B、感光浆太厚或不均匀 C、暴光时间不足 D、显影液浓度太高或时间过长 E、感光浆已变质 F、有害光线侵入
二、显影时局部图案显不出
A、菲林黑度不足或菲林药膜面反转 B、烘板时间过长或温度太高 C、菲林与感光浆贴合不紧密 D、暴光时间过长E、感光浆涂层过厚
三、蚀刻时感光浆脱落
A、感光浆图层太薄 B、烘板时间不足或温度太低 C、蚀刻水浓度过高
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