发明名称 |
Apparatus for removing resist particles from stripping solutions for printed wireboards |
摘要 |
An apparatus for removing polymer particles from the stripping solution used in the treatment of printed wireboards comprises passing a solution having resist particles dispersed therein over a screen having openings of 100 microns, where the screen is maintained at an angle of from 40 to 70 DEG to the horizontal. The apparatus comprises a curtain tube consisting of an inner concentric tube with a plurality of holes and an outer concentric tube with a slot wherein the position of the slot is adjustable, a filter comprising a screen, and a pump for circulating the solution. In one embodiment, the filter comprises a cylindrical screen. The stripping solution comprises an aqueous solution of an organoamine, ionic nitrogen compound or alkali or alkaline-earth hydroxide, or mixtures thereof.
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申请公布号 |
US5599444(A) |
申请公布日期 |
1997.02.04 |
申请号 |
US19950413760 |
申请日期 |
1995.03.30 |
申请人 |
ATOTECH USA, INC. |
发明人 |
BARON, DAVID T.;TAYLOR, ALEXANDER R.;JOHAL, KULDIP S. |
分类号 |
B01D29/00;B01D29/01;B01D33/06;B01D33/073;B01D35/28;B01D36/02;G03F7/42;(IPC1-7):B01D29/90;B01D33/72;C23F1/00;H01L21/310 |
主分类号 |
B01D29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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