Pore-free polyurethane negative film as well as preparation method and application thereof

The invention provides a pore-free polyurethane negative film as well as a preparation method and application thereof, preparation raw materials of the polyurethane negative film comprise a double-component polyurethane stock solution, and the polyurethane negative film is obtained by pouring, press...

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Bibliographische Detailangaben
Hauptverfasser:	CAI WANDONG, PAN CHAOFAN, ZHAO YEBAO, ZHAO QINGBAI, XIA YUECHANG, CAI WU, DAI YA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHARACTERISTIC FEATURES OF FOOTWEAR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FOOTWEAR GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES 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 PARTS OF FOOTWEAR PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention provides a pore-free polyurethane negative film as well as a preparation method and application thereof, preparation raw materials of the polyurethane negative film comprise a double-component polyurethane stock solution, and the polyurethane negative film is obtained by pouring, pressurizing and forming the double-component polyurethane stock solution; by adopting the forming process of matching the double-component polyurethane stock solution with pouring and pressurizing, air remaining in mold lines in the pouring process of the double-component polyurethane stock solution can be effectively extruded out of a mold, so that the air remaining in the mold is completely extruded, and furthermore, the interior of a polyurethane negative film obtained after forming is free of air holes and bubbles, so that the service life of the negative film is prolonged, and the service life of the negative film is prolonged. The LED lamp has the characteristics of good light transmission and attractive appearan