Abstract:
PROBLEM TO BE SOLVED: To correctly identify the material quality of even transparent or semitransparent plastics. SOLUTION: A plastic identifying apparatus includes both a belt conveyor 4 for transferring a plastic to be identified P by placing it on a belt 4a made of a stainless steel plate and a Raman scattering identifying device 5 for irradiating the plastic to be identified P on the belt conveyor 4 with a laser beam L, acquiring Raman scattering light R scattered from the plastic to be identified P, and identifying the material of the plastic to be identified P. Since a laser beam transmitted through the plastic to be identified P is reflected at the front surface of the belt 4a to reduce the effects of the Raman effect due to the belt 4a even if the plastic to be identified P is transparent or semitransparent, it is possible to acquire distinctive Raman scattering signals of the plastic to be identified P having very few effects of the belt 4a and correctly identify the material of the plastic to be identified P. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a foreign matter removing device and a foreign matter removing method capable of removing foreign matter in a large amount.SOLUTION: The foreign matter removing device includes a rotating cylindrical roller 3 and a plurality of needles 4 erectly formed on the outer circumferential surface of the roller 3, made to pierce the foreign matter S by the rotation of the roller 3, bent at a halfway part, and being elastically deformable. The needles 4 pierce the foreign matter S by obtaining pressing force through the elastic deformation of the needle 4 in a bending direction when pressed to the foreign matter S by the rotation of the roller 3. Accordingly, the foreign matter S is removed by allowing it to be pierced by the needles 4.
Abstract:
PROBLEM TO BE SOLVED: To identify plastics with accuracy, regardless of the variation in the wavelength of a laser beam.SOLUTION: An identification device based on Raman scattering includes a Raman-scattering information acquisition means 31 of obtaining Raman scattering information, by detecting Raman scattering light scattered from an identification target to which laser beams are applied; a laser information acquisition means 32 of obtaining laser information by detecting a laser beam; a correction means 33 of correcting Raman-scattering information based on the laser information; and an identification means 35 for identifying an identification target, based on the Raman-scattering information after correction.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for identifying plastic based on Raman scattering identifying plastic materials at high speed. SOLUTION: In this method, a Raman scattering signal is obtained from Raman scattered light R scattered from a plastic P to be identified, by irradiating the plastic P to be identified with laser light L, and the material of the plastic to be identified is identified based on: Raman scattering intensity in one or more of known peak positions and Raman scattering intensity in a known baseline position set by measuring a Raman scattering spectrum of a known plastic beforehand; Raman scattering intensity at a Raman shift wavenumber corresponding to a known peak position for every material of a plastic to be identified obtained from the Raman scattering signal of the plastic to be identified; and Raman scattering intensity at a Raman shift wavenumber corresponding to a known baseline position. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a waste material compression device capable of repeatedly charging and compressing waste materials while suppressing restoration and expansion of the once-compressed waste materials, reliably miniaturizing the waste materials, and increasing the volume reduction ratio of the waste materials in a packed condition. SOLUTION: A restoration suppression means 30 which is protruded as necessary is disposed in a storage space. After the charged waste materials are compressed, the restoration suppression means is protruded in the storage space to fix the waste materials, and the compression condition is continued. Even when the compression condition by a pressing unit 20 is released, more waste materials can be stored in the storage space as compared with a case in which waste materials are simply charged and compressed repeatedly without restoration and expansion of the waste materials stored in the storage space. In addition, more waste materials can be collectively packed in the same volume in a packing step, and the cost for treating waste materials is suppressed. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
An apparatus for receiving Raman scattering signals, includes an optic light-collection system for collecting Raman scattering lights having scattered from an object when excitation laser beams are irradiated thereto, a spectroscope including a diffraction grating, for separating the Raman scattering lights into its spectral components, and an optical path converter including at least one optical waveguide for converting lights having been collected by the optic light-collection system into slit-shaped lights in compliance with an orientation of the diffraction grating.
Abstract:
PROBLEM TO BE SOLVED: To provide a Raman scattering signal acquisition device and a Raman scattering signal acquisition method which are capable of discriminating a target to be discriminated, even with weak Raman scattering light.SOLUTION: The Raman scattering signal acquisition device includes: a light collecting optical system 30 including a condenser lens 32 which collects Raman scattering light generated from a plastic P to be discriminated by irradiation of exciting laser light L widely from an irradiation range of the exciting laser light L; a spectroscopic optical system 50 including a spectroscope 52 for dispersing the Raman scattering light; and an optical fiber bundle 40 as an optical path conversion body, which comprises a plurality of optical fibers and converts light collected by the light collecting optical system 30 to a slit shape corresponding to a direction of a diffraction grating of the spectroscope 52.