FREMGANGSMAADE OG APPARAT TIL AT REGULERE MASSEFYLDEN AF ET SKUM

The density of a foam is controlled by measuring the electrical conductivity of the foam and adjusting its density in response to the measured electrical conductivity. Apparatus for carrying out this method comprises means (10) for generating a foam connected by an enclosed pathway (13) to an applic...

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Bibliographische Detailangaben
1. Verfasser:	KOTOYE, FEMI O
Format:	Patent
Sprache:	dan
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CONTROLLING FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MEASURING MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NOZZLES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL REGULATING SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL
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Beschreibung
Zusammenfassung:	The density of a foam is controlled by measuring the electrical conductivity of the foam and adjusting its density in response to the measured electrical conductivity. Apparatus for carrying out this method comprises means (10) for generating a foam connected by an enclosed pathway (13) to an application outlet (14). Located within the pathway (13) is an electrical conductivity sensor (15) which is electronically connected (16) to a translation means (17). The translation means (17) is connected (18) to a gas glow controlling means (19) whereby, in response to the signal received from the conductivity sensor (15), the translation means (17) provides a signal to the gas glow control means (19) to vary gas supply to the means (10) for generating the foam. The invention provides an accurate method of controlling the density of the foam within a narrow range, thus enabling the application of the minimum amount of foam necessary to achieve the desired physical properties.