ALIPHATIC POLYESTER RESIN REFLECTIVE FILM AND REFLECTOR PLATE

• Main Authors: HIRUMA, TAKASHI, TAKAGI, JUN, NISHIDA, MIKI, WATANABE, TAKAYUKI, KATSUHARA, KAZUNARI
• Format: Patent
• Language: English; French; Japanese
• Published: 26.05.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

Disclosed is a reflective film having excellent light-reflecting properties which do not deteriorate over time during use. Specifically disclosed is an aliphatic polyester resin reflective film which is made of a resin composition containing an aliphatic polyester resin and a pulverized filler. The yellow color degree (YI value) of this reflective film is less than 3.6. The pulverized filler is preferably composed of at least one substance selected from the group consisting of calcium carbonates, barium sulfates, titanium oxides and zinc oxides. L'invention décrit un film réfléchissant ayant d'excellentes propriétés de réflexion de la lumière ne diminuant pas à l'usage avec le temps. L'invention décrit spécifiquement un film réfléchissant en résine de polyester aliphatique fabriqué à partir d'une composition de résine contenant une résine de polyester aliphatique et une charge pulvérisée. Le degré de couleur jaune (indice de jaune) de ce film réfléchissant est inférieur à 3,6. La charge pulvérisée est de préférence composée d'au moins une substance choisie dans le groupe formé de carbonates de calcium, sulfates de baryum, oxydes de titane et oxydes de zinc.