| 摘要 |
The gas feed pipe is made with a bed of solid particles or filaments attached to its inner surface to act as a filter for the transported gas. The pipe can be made from a thermoplastic material and the particles or filaments can also be made from a thermoplastic, obtained e.g. from manufacturing waste. The gas feed pipe is made with a bed of solid particles or filaments attached to its inner surface to act as a filter for the transported gas. The pipe can be made from a thermoplastic material and the particles or filaments can also be thermoplastic, obtained e.g. from manufacturing waste. The filter particles can be fixed inside the pipe by welding, using a current of hot air at 80 - 350 deg C delivered at a rate of 50 - 5000 kg/h, or with the aid of a bonding agent.
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