C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 6/00 (2006.01)
Patent
CA 2576336
A method for treating extremely small particles of recycled polyethylene terephthalate comprises providing a quantity of RPET particles having an average mean particle size ranging from about 0.0005 inch to about 0.05 inch in diameter, heating the RPET particles to a temperature sufficient to cause at least a portion of the RPET particles to adhere to one another, and forming the adhered RPET particles into pellets, said pellets having substantially the same average surface-to-volume ratio as the bulk, un-adhered RPET particles.
L'invention porte sur un procédé qui permet de traiter des particules extrêmement petites de polyéthylène téréphtalate recyclé ("recycled polyethylene terephthalate" ou RPET), selon lequel on rassemble une quantité de particules de RPET possédant un diamètre moyen de particule compris entre environ 0,0005 pouce et environ 0,05 pouche, on chauffe les particules de RPET à une température suffisante pour amener moins une partie des particules de RPET à adhérer les unes aux autres, et on forme des granules à partir des particules de RPET agglomérées, lesquelles granules possédent sensiblement le même rapport moyen surface/volume que les particules de RPET en vrac, non agglomérées.
Hayward Donald W.
Witham Daniel L.
Lesperance & Martineau S.e.n.c.
Phoenix Technologies International Llc
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