B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/16 (2006.01) B29B 17/00 (2006.01) B29C 44/04 (2006.01)
Patent
CA 2268674
A method and an apparatus for manufacturing products through the recycling of waste materials and whereby the optional addition of raw materials may occur. The waste materials and optionally used raw materials are first shredded into small-sized particles, preferably from 1 to 10 mm in size, and then mixed together to form a first blend that constitutes a first component of each product, which is adapted to form the inner, non-visible portion, or core, of each product, and a second blend which constitutes a second component of each product, and which is adapted to coat the inner portion and form the outer visible portion, i.e. skin, of each product. The first and said second blends are subsequently heated separately from each other, following addition to the first blend of heat stabilizing means and blowing means adapted to cause the first blend to swell or foam during heating, as well as the addition of colouring means to said second blend. Heating takes place to a temperature of approx. 180 to 210°C, thereby achieving first and second plasticized masses. Constituents having higher melting temperatures than said pre-determined heating temperature are incorporated in the masses where they behave like inert filling materials. The first and said second plasticized mass are then injected simultaneously into a moulding means reproducing the shape of the respective products, thereby homogeneously mixing with each other so that the lower density, higher fluidity compound forms the outer portion and the higher density, lower fluidity compound forms the inner portion of the product.
Dibi S.r.l.
Elma Chemicals S.r.l.
G. Ronald Bell & Associates
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