| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to articles that required no-oxygen atmosphere in their production, for example to contact lenses. Method of degassing injection mould parts comprises the following stages: fitting injection mould part into case inner space, compacting said space, evacuating it, feeding gaseous fluid into said space and keeping it therein during time sufficient for degassing of mould part. Said degassing case comprises hollow casing, first and second end parts. Note here that first end part has opening, cover and element made up of needle valve and membrane. Proposed device comprises tubular first part to be arranged in inner space of object, second part closing first part first end, third part closing first part second end, valve communicated with vacuum source or gaseous fluid source and pressure indicator. Degassing system comprises aforesaid case, controller and valve to communicate with controller. ^ EFFECT: minimised effects of oxygen on injection mould parts. ^ 5 cl, 16 dwg |
