Plastic identifying method

Details Plastic identifying method Plastic identifying method

2007-01-09

2007-01-09

Gabor, Otilia (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

10476637

ABSTRACT:
A plastic identifying method of the present invention is provided with a step (i) of obtaining a first infrared absorption spectrum by irradiating infrared light of a predetermined wave number onto an item to be identified that contains plastic and measuring the intensity of the infrared light that is totally reflected by this item, and a step (ii) of identifying the plastic contained in the item to be identified by matching the first infrared absorption spectrum with a group of infrared absorption spectra that have been measured for predetermined materials, wherein the predetermined materials are a group of materials containing plastics, and each infrared absorption spectrum in this group of infrared absorption spectra is obtained by irradiating infrared light of a predetermined wave number onto a predetermined material, and measuring the intensity of the infrared light that is totally reflected by that material, and matching is carried out by comparing peaks in the first infrared absorption spectrum with peaks in each infrared absorption spectrum in the group of infrared absorption spectra. With this plastic identifying method, items that contain plastic can be identified accurately, even in such cases as when the items have been colored or contain additives or the like.

REFERENCES:
patent: 3855277 (1974-12-01), Fox
patent: 4636435 (1987-01-01), Yanagihara et al.
patent: 4890577 (1990-01-01), Maibach
patent: 4980454 (1990-12-01), Tamai et al.
patent: 5091647 (1992-02-01), Carduner et al.
patent: 5216244 (1993-06-01), Esaki et al.
patent: 5510619 (1996-04-01), Zachmann et al.
patent: 5512752 (1996-04-01), Aikawa et al.
patent: 5777330 (1998-07-01), Murase et al.
patent: 5965889 (1999-10-01), Brierley
patent: 6108077 (2000-08-01), Heaton et al.
patent: 6335376 (2002-01-01), Allen et al.
patent: 6518572 (2003-02-01), Kishii et al.
patent: 6563119 (2003-05-01), Zoidis
patent: 6610981 (2003-08-01), Sommer, Jr.
patent: 6845869 (2005-01-01), Graf von Deym et al.
patent: 6852977 (2005-02-01), Hisazumi et al.
patent: 195 02 134 (1996-08-01), None
patent: 1 286 153 (2003-02-01), None
patent: 64-6761 (1989-01-01), None
patent: 5-273122 (1993-10-01), None
patent: 7-239297 (1995-09-01), None
patent: 8-136449 (1996-05-01), None
patent: 10-154734 (1998-06-01), None
patent: 11-211634 (1999-08-01), None
patent: 2000-186987 (2000-07-01), None
patent: 2000-199734 (2000-07-01), None
patent: 2000-214084 (2000-08-01), None
patent: 2001-122978 (2001-05-01), None
patent: 2001-194297 (2001-07-01), None
patent: 2002-286637 (2002-10-01), None

Affiliated with

Also associated with

Rating

Plastic identifying method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plastic identifying method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plastic identifying method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3782782