Method and a device for producing shaped articles from a multi-component reaction mixture
AssigneeBayer Aktiengesellschaft
InventorsHeinrich Boden, Bernhard Rentz, Johann Niggemann, Gerhard Just
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Abstract
The present invention relates to a method and a device for producing shaped articles from a multi-component reaction mixture which forms, for example, polyurethane, epoxy resin, polyester resin or polyamide, by mixing at least two of the individual components in at least two premixing chambers to form multi-component reaction mixture and these mixtures are subsequently mixed in a single-stage mixing chamber to form a mixture which is introduced into a shaping zone in which it is cured to form the shaped article.
Claims10
In a method of producing polymeric shaped articles from a multi-component reaction mixture by mixing the individual components to form the multi-component reaction mixture and introducing this mixture into a shaping zone in which it is cured to form the shaped article, the improvement wherein:
- (a) at least two flowable reactants are each fed to at least two separate premixing zones, and a flowable multi-component reaction mixture is produced in each of the premixing zones, and
- (b) these flowable multi-component reaction mixtures are fed to an at least single-stage subsequent mixing zone and mixed together therein.
A device for mixing at least four reactants comprising
- (a) storage containers for each of said reactants,
- (b) feed lines leading from two of said storage container via metering pumps to a first mixing chamber,
- (c) feed lines leading from the other two of said storage container via metering pumps to a second mixing chamber, and
- (d) the outlets of said first mixing chamber and said second mixing chamber merging into a common subsequent mixing chamber.
Dependencies are inferred from the claim text.