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US 6,615,991 B1Granted
Filter aid
AssigneeStefan Herzog
InventorJosef Otto Rettenmaier
Life of this patent
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Abstract
A filter aid, in particular for filtering beverages by means of precoated filters, comprises a mixture of exclusively natural components, e.g. cellulose components. The filter aid is made only of sustainable raw materials and can be degraded almost totally in a natural way.
Claims15
A filter aid for the precoat filtration of beverages, comprising a mixture of:
- 10 to 75 wt % cellulose with a water value ranging from about 600 to about 150;
- 10 to 45 wt % cellulose with a water value ranging from about 100 to about 10;
- 10 to 30 wt % cold water insoluble starch with a water value of <20;
- and
- the remainder up to 100 wt % being additives, wherein the mixture exhibits a water value of <300.
2 more elements
A filter for the precoat filtration of beverages, comprising a mixture of:
- 10 to 75 wt % cellulose with a water value ranging from about 600 to about 150;
- 10 to 45 wt % cellulose with a water value ranging from about 100 to about 10;
- 10 to 30 wt % cold water insoluble starch with a water value of <20;
- a pourable material of fine particle size;
- and
- the remainder up to 100 wt % being additives, wherein the mixture exhibits a water value of <300.
3 more elements
Dependencies are inferred from the claim text.