Review method of recycling
Proper recycled material mix rate depends on the recycled material quality, using grade, and product's demand
characteristics, so cannot be completely defined. Therefore, decision of the limit of the recycled material ratio
should be made after sufficient check has been done. Do not mix oil or trash when recycling sprue and runner.
Also, molded products made for testing or requirement proposal are not suitable for recycling because the
physicality is unsteady. Figure 4-12 indicates the flow chart of the recycling method.