Wintersdark
Member
- Joined
- Aug 28, 2010
- Messages
- 91
Coolfrom the plastic injection mold ive done, a color change doesnt take more then 15min especially on small products like pandora case. basicially let the hoppers run low/out, add different color, have a few bad cases spit out due to no material or 2 colors mixed, and after like 10 molds AT MOST it would start spitting out same product but different color
Definitely a faster process then. With extrusion, you can't break the stream of plastic (letting a hopper run out, for example) as getting it running again is an enormously time consuming - 30 minutes for a simple product, potentially hours for difficult ones. So, you shut off the colour, wait for the old colour to work it's way out, then add the new colour. However, the middle part takes a long, long time to happen - plastic flows much faster through the center of the die than the outsides, so residual coloured plastic remains in the outer edges of die and leaves a trail of whichever the old colour was along the corresponding edges of the product.
And that's everyone's entirely irrelevant piece of plastics manufacturing information for the day. Apologies for wandering enormously off topic!