| 摘要 |
In a mixing device for plastic material a body extends substantially over the entire cross section of a flow passage through which the material flows when in use. The body comprises first and second groups of passages for the material extending through the body. Each passage is parallel to the other passages in the same group and alternates with passages in the other group. The inlet and outlet ends of the passages of the first group are disposed on one and the other side respectively of a central longitudinal plane through the body. The inlet and outlet ends of the passages of the second group are disposed on said other and said one side respectively to said plane. The groups of passages cross over in a central region of the body such that in use temperature equalization of the material is promoted in said region.
|
