INSECT-CONTROLLING POLYSTYRENE FOAM INSULATOR

PROBLEM TO BE SOLVED: To provide a polystyrene foam insulator in which a chemical effective for control of insects or the like but safe for men and beasts is dispersed with concentration uniform and effective to the inside, and the chemical effects can be permanently preserved. SOLUTION: A sodium bo...

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Bibliographische Detailangaben
1. Verfasser:	TOBIN MICHAEL W
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FISHING FORESTRY GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HUNTING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TRAPPING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a polystyrene foam insulator in which a chemical effective for control of insects or the like but safe for men and beasts is dispersed with concentration uniform and effective to the inside, and the chemical effects can be permanently preserved. SOLUTION: A sodium borate aqueous solution is thermoregulated to an enough temperature to cause at least partial prefoaming of polystyrene beads at the following process. At least partial prefoaming of the polystyrene beads is caused by fluidly introducing the beads into a vessel while the thermoregulated sodium borate aqueous solution is sprayed. Water content is removed from the prefoamed polystyrene beads by evaporation, and sodium borate is solidly stuck to the minutely uneven surface of the plystyrene beads. The complete foaming is established by introducing the sodium borate-carried and prefoamed polystyrene beads into the mold and by heating it. A foamed polystyrene block is molded with making the surface tacky and integratedly fusing it by small pressure.