B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 17/02 (2006.01) B02C 19/00 (2006.01) B02C 19/12 (1990.01)
Patent
CA 2096768
ABSTRACT 1. Process for the production of a recycled plastic product made of varnished plastic parts and thermoplastical plastic recycling material. 2.1 Known processes pulverize varnished plastic parts in a multistage pulverizing process with approx. 300 to 500 µm. The varnish particles contained in the fine ground material highly disturb the characteristics of the recycled plastic product. For the removal the fine ground material is filtered respectively sieved out of the melt with immense efforts. The new process shall eliminate this relatively uneconomical method and at the same time facilitate the creation of a thermoplastical plastic recycling material made of varnished plastic parts, which with its characteristics comes close to a reclaimed product. 2.2 According to the process solution varnished plastic parts are multistagely ground but not pulverized, while they at the same time are made subject to a stretching treatment during the pulverizing step to loosen a remarkable part of the varnish sticking thereto. Resulting plastic- and varnish particles are separated using a vibrating screen for example, and thereafter packaged, for example in the form of a granulate. The thermoplastic plastic recycling material does not comprise any visible inclusions of more than 0,25 mm2 of varnished particles in the sheet test. 2.3 Recycling process for varnished thermoplastical shaped parts in general, specifically though related to the automotive industry and in particular the recycling of varnished bumpers.
Marks & Clerk
Montell North America Inc.
Preiss Joachim
LandOfFree
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