| 摘要 |
#CMT# #/CMT# The cover (20) has a radio frequency identification device (30) with a chip (31) and antenna (32) contained within its multi-layer structure without creating any increase in thickness, and is resistant to mechanical and thermal shocks, allowing it to be embossed and laminated. #CMT# : #/CMT# The cover (20) has a radio frequency identification device (30) with a chip (31) and antenna (32) contained within its multi-layer structure without creating any increase in thickness, and is resistant to mechanical and thermal shocks, allowing it to be embossed and laminated. It has at least one fibre-based e.g. cellulose or non-woven layer containing a polymer imparting tear resistance and resilience, and the chip is located within a layer of greater thickness than itself and possessing a resilience that enables it to stay at least as thick as the chip when subjected to a brief compression. #CMT#USE : #/CMT# Cover for booklet, especially a passport. #CMT#ADVANTAGE : #/CMT# The radio frequency identification device is well enough protected to last the life of the passport. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of a passport showing the radio frequency identification device (RFID). 20 : Cover 30 : RFID 31 : Chip 32 : Antenna #CMT#POLYMERS : #/CMT# Preferred Materials: The polymer material in the fibre-based layer is selected from: natural or synthetic rubber, butadiene styrene rubber, polybutadiene, butadiene acrylonitrile copolymers, acrylic copolymers, polychloroprene and their mixtures. The cover's embossable layer can be of PVC-based polymer, polyurethane, natural or synthetic elastomers with optional expansion agents, emulsions of PVC and butadiene/acrylonitrile copolymer or butadiene/ acrylonitrile/styrene copolymer, and their mixtures. The chip and antenna are fixed to a backing film layer, especially of polyester. |
