New technologies for recycling of sheet molding compound (SMC) in Japan have been further developed at Takeda Chemical Company in Osaka. It is understood that the company crushed the waste SMC sheet parts by hammer crusher and processed by the granulator, and then passed the screening to finally obtain powder materials that meet the requirements of recycling.
The company claims that this technology was introduced from BASF in Germany. The resulting powder can be used as a filler for new SMC sheets instead of calcium carbonate. SMC sheet products containing 10-20% recycled powder materials can still maintain the original performance of SMC sheet products, but the specific gravity is about 5% lower than the original. At present, Toyota Motor Corporation has adopted this recycled powder material, pressed into many auto parts and has been put into use.
It is also reported that Nissan Motor Manufacturing Corporation of Japan has also successfully recycled these reinforced plastic parts and processed them into recycled glass fiber reinforced molded plates. This recycled material can also be extruded and is suitable for making high-strength or high-rigidity automobile parts such as automobile bumpers. This technology requires that a certain amount of glass fiber and powdered thermoplastic material be added to the debris of recycled plastic parts (such as car bumpers, dashboards, etc.), and impregnated into the glue matrix to be thoroughly mixed and saturated. Ensure uniform performance of the final material.
It is said that there is no need to remove the coating layer on the surface of the recycled plastic parts used. This new technology can be used to manufacture regenerated molded plates and maintain their original high strength and high rigidity characteristics. Tests show that the parts made with 60% recycled materials have exactly the same performance as the parts made with the original materials. Parts made from recycled molded boards can be recycled and processed into molded boards again. In secondary recycled materials, the amount of recycled materials can reach 40% to 60%