PROCESSO PARA MODIFICAR O TEOR DE AGUA DE MATERIAL ABSORVEDOR OU DOADOR DE AGUA

The water content of a material, which tends to either absorb water or to release water, is changed with the aid of a film, which at least partially separates the material from the adjacent space and is impermeable to liquid water but permeable to gaseous water. Polyvinyl alcohol with a particular d...

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Bibliographische Detailangaben
Hauptverfasser:	GUTTE R, ZIMMERMANN W, HARREUS A
Format:	Patent
Sprache:	por
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AGRICULTURE AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING ANIMAL HUSBANDRY BLASTING CHAIRS FOR DENTISTRY CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY CIGARETTES CIGARS COFFEE COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM FISHING FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J FORESTRY FUNERAL DEVICES HANDLING THIN OR FILAMENTARY MATERIAL HAY OR STRAW PRESSES HEATING HUMAN NECESSITIES HUNTING HYGIENE LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING ORCHEWING MANUFACTURE, PREPARATION, OR INFUSION THEREOF MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL OPERATING TABLES OR CHAIRS ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PROCESSING OF HARVESTED PRODUCE RANGES SEPARATION SMOKERS' REQUISITES SNUFF STORING TEA TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR SUBSTITUTES THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TOBACCO TRANSPORT OR ACCOMODATION FOR PATIENTS TRANSPORTING TRAPPING 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 VENTILATING WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL WEAPONS
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Beschreibung
Zusammenfassung:	The water content of a material, which tends to either absorb water or to release water, is changed with the aid of a film, which at least partially separates the material from the adjacent space and is impermeable to liquid water but permeable to gaseous water. Polyvinyl alcohol with a particular degree of polymerization and degree of hydrolysis is used as the film material. The film can be mechanically or chemically after-treated. The moistening or de-moistening of the material, which is solid, liquid or gaseous, is effected, utilizing a water vapor pressure gradient, under very mild conditions.