| 摘要 |
The chamber has a cover (5) made from a plastic material and especially a thermoplastic with high mechanical strength, such as polypropylene or polyamide reinforced with 10-60 wt.% of glass fibres. The cover is lined with a chemically inert material, especially a thermoplastic able to withstand temperatures of 150-200 degrees C, such as phenylene polysulphide in a layer < 1 mm thick and preferably 0.5 mm thick. The cover and lining can be made by co-injection, with the cover having a minimal thickness of 2 mm and the lining 0.2-0.4 mm. |
