Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Sorting bottles – ampoules – jars – drinking vessels – or like...
Patent
1990-02-09
1992-08-25
Hajec, Donald T.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Sorting bottles, ampoules, jars, drinking vessels, or like...
209579, 209587, 209588, 209589, 209702, 209942, 209 3001, 356240, 250225, 250223B, B07C 534
Patent
active
051411105
ABSTRACT:
A method of sorting a mixed group of plastic articles, such as PET and PVC containers, involves individually subjecting each article to a beam of electromagnetic radiation, and detecting a change in the intensity of the beam. The measured intensity varies in a manner indicative of the crystallinity of the plastic from which the article is made, and hence identifies the type of plastic the article is made of. Each article is then sent to one of a plurality of destinations, such as recycling collection bins, according to the type of plastic. The method is particularly useful in separating PET and PVC used in containers, since these plastics are very difficult to sort by conventional methods.
REFERENCES:
patent: 2441049 (1948-05-01), West
patent: 3197647 (1965-07-01), Fraenkel
patent: 3313941 (1967-04-01), Marks
patent: 3355980 (1967-12-01), Mathias
patent: 3963348 (1976-06-01), Nakatani et al.
patent: 4136779 (1979-01-01), Bierenger
patent: 4262806 (1981-04-01), Drabs
patent: 4417662 (1983-11-01), Nicholson et al.
patent: 4617111 (1986-10-01), Grimm et al.
patent: 4659112 (1987-04-01), Reiner et al.
patent: 4905169 (1990-02-01), Buican et al.
patent: 4908507 (1990-03-01), Imre et al.
patent: 4915237 (1990-04-01), Chang et al.
patent: 4919534 (1990-04-01), Reed
patent: 4973163 (1990-11-01), Sakai et al.
patent: 4984875 (1991-01-01), Abe et al.
Cartz Louis
Trischan Glenn M.
Hajec Donald T.
Hoover Universal Inc.
LandOfFree
Method for sorting plastic articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for sorting plastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sorting plastic articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-379318