Title:
粒形状のポリマー・プラスチック材料を熱後処理するための装置と方法
Document Type and Number:
Japanese Patent JP2004508991
Kind Code:
A
Abstract:
Apparatus for thermal treatment or post-treatment of granular polymers, especially polyesters, e.g. polyethylene terephthalate, comprises a vertical hopper (1), through which the granules fall, with a rectangular upper section (4) and tapering lower section (5). The walls have sieve sections with a smooth, structured surface whose structure is at right angles to the direction of flow of the granules and of the same size as them, which extend across their whole width and allow a nitrogen-containing gas to be fed through the granules at right angles to their direction of flow. An independent claim is included for a method for thermal treatment or post-treatment of granular polymers using the apparatus in which air or nitrogen is fed through the granules at 80 -120[deg] C in both the upper and lower sections of the hopper.
Inventors:
Gais Buehler Hans
Kuenemund, Bernd
Bowler, camille
Terrasi, Philippo
Kuenemund, Bernd
Bowler, camille
Terrasi, Philippo
Application Number:
JP2002530274A
Publication Date:
March 25, 2004
Filing Date:
July 09, 2001
Export Citation:
Assignee:
Buehler Akchen Gezel Shaft
International Classes:
B29B13/02; B29B13/06; C08G63/90; F26B17/12; F26B17/14; F26B21/14; B29C71/00; (IPC1-7): B29B13/02
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Toru Mori
Yutaka Yoshida
Hajime Asamura
Toru Mori
Yutaka Yoshida