| 摘要 |
A machine for densifying plastic containers, such as recyclable FET bottles, includes a feeder and a shredder. The feeder includes a paddle wheel with radial vanes for feeding the containers into the inlet of the shredder and blocking their return. A scraper is provided adjacent the outlet of the feeder for dislodging any material wedged in the pocket formed between adjacent vanes and preventing its return into the inlet of the feeder. The shredder includes intermeshing rotary shredder elements and stationary shredder elements, the cutting surfaces of which slope with respect to each other to provide a scissoring action. In a preferred form, each rotary shredder element includes a sharpened outer tip which projects in the direction of rotation for starting a tear in the container undergoing reduction. Each stationary shredder element also includes a sharpened outer tip which projects opposite the direction of rotation for retaining larger pieces of material in the shredder for further shredding. A scraper is provided adjacent the outlet of the feeder for dislodging material caught on the rotary shredder elements and directing it into the outlet of the shredder.
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