Claims
- 1. A device for the production of plastic products from at least two free-flowing, metered reactants comprising
- a) storage containers for each reactant,
- b) feed lines leading from each storage container via metering pumps to a mix head,
- c) at least one of said feed lines leading from the storage container associated therewith via a first metering pump into a preliminary mixer and from said preliminary mixer to said mix head via a second metering pump,
- d) a feed screw for introducing pulverulent to fine-grained or fibrous additives into at least one of said reactants, said feed screw leading into said preliminary mixer,
- wherein (i) said feed screw is a compression screw, and wherein (ii) said preliminary mixer is provided with a pressure sensor, said sensor being connected by means of a signalling line via a set value comparator and rotational speed controller to the drive of said compression screw.
- 2. The device of claim 1, wherein a shut-off device is provided between said compression screw and said preliminary mixer.
- 3. The device of claim 1, wherein a bypass line is provided around said second metering pump, said bypass line leading from said preliminary mixer to said mix head, said bypass line having a shut-off device therein.
Priority Claims (1)
Number |
Date |
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38 41 671.9 |
Dec 1988 |
DEX |
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Parent Case Info
This application is a division of application Ser. No. 07/744,566 filed Aug. 13, 1991 now U.S. Pat. No. 5,152,943 which is a continuation of Ser. No. 07/446,952 filed Dec. 6, 1989, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (4)
Number |
Date |
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71522 |
Jan 1960 |
FRX |
1153153 |
Aug 1963 |
DEX |
3507202 |
Apr 1986 |
DEX |
811695 |
Apr 1959 |
GBX |
Divisions (1)
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Date |
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Parent |
744566 |
Aug 1991 |
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Continuations (1)
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Date |
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446952 |
Dec 1989 |
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