Process and apparatus for recycling of PET-material

Details Process and apparatus for recycling of PET-material Process and apparatus for recycling of PET-material

2006-09-19

2006-09-19

Davis, Robert (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

With cutting, severing or comminuting means

C425S197000, C425S198000, C425S199000, C425S144000, C264S037100, C264S037250, C264S037310

Reexamination Certificate

active

07108500

ABSTRACT:
Within a process for recycling of PET-material and/or objects of PET, the PET-material to be processed is heated and dried in the course of a pre-treatment step and simultaneously is crystallized at elevated temperature. This pre-treatment step is followed by a main-treatment step under vacuum. In this main-treatment step, the processed material is again dried and crystallized at a temperature that is higher than the temperature of the pre-treatment step. Preferably, also in the main-treatment step no plasticizing of the material takes place; the plasticizing or, respectively, melting of the material takes place only after the main-processing step.An apparatus for performing this process comprises a pre-processing device (3) in which the processed material is dried and simultaneously crystallized at elevated temperature, and, if desired, is also comminuted. A main-processing device (4) is connected to this pre-processing device (3), in which main-processing device the supplied PET-material is dried, crystallized and heated to a temperature that is higher than the temperature within the pre-treatment device.

REFERENCES:
patent: 4721448 (1988-01-01), Irish et al.
patent: 5182066 (1993-01-01), Marin
patent: 5225137 (1993-07-01), Sadr
patent: 5407624 (1995-04-01), Engh et al.
patent: 5509795 (1996-04-01), Near et al.
patent: 5536154 (1996-07-01), Bacher et al.
patent: 5750158 (1998-05-01), Wissmann et al.
patent: 5756129 (1998-05-01), Yoshii et al.
patent: 5950936 (1999-09-01), Bergart
patent: 6126099 (2000-10-01), Fachinger et al.
patent: 6279471 (2001-08-01), Reddoch
patent: 6405579 (2002-06-01), Tjahjadi et al.
patent: 1957333 (1970-12-01), None
patent: 274436 (1989-12-01), None
patent: 0074346 (1983-03-01), None
patent: 0379684 (1990-08-01), None
patent: 0698462 (1996-02-01), None
patent: 0779136 (1997-06-01), None
patent: 779136 (1997-06-01), None
patent: 9318902 (1993-09-01), None

Affiliated with

Also associated with

Rating

Process and apparatus for recycling of PET-material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for recycling of PET-material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for recycling of PET-material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3570341