To explain all the aspects of the problem we are in need of 2,568,985 webpages and a lifetime to write them all so this is a brief resume of the entire story.
Before you go in details and ask for an offer, you need to know two things very well:
First is you need to state the quality degree of the flakes you must have at the end.
Second, only by buy, may be the known fact you have to be prepared to spend lots of money.
And this is what it means:
For example a flake, very good for fibres application, can contain 20 PPM of glue and, if this is the quantity, your customer will be very happy.
The same material with 10 PPM of glue will also be good, after pelletizing and SSP, for bottles application.
Consequently, the difference is 10 PPM equal to 0,001% - Got the point ?
This is not the only difference because actually, again, the matter is a little bit more complicated, but gives you an idea of what we're talking about.
At the end, the huge difference stays in the cost to get one quality versus another also.
If you require a good bottle to bottle top quality washing line, the number you'll read within the last page will never have significantly less than six zeros, and you're lucky if first number is a 1, while for a lesser quality the real number can be shorter, not to mention the difference in operating costs.
This "small" difference may also effects the composition of the line in other sections.
Sorting, this is the very first section of the relative line, should be perfect, meaning zero PVC, PS, PA or perhaps other plastics cannot reach the granulator because following this true stage these plastics can't be recognized and removed. (yes, it can but is much too expensive)
Then, flakes head to air-separators to eliminate detached labels and some people of the dirt, pre-washing, separation by sink-float tanks, the washing process, rinsing that's is definitely another very important step of the procedure and final drying.
When you got all this, you're half of the way to complete the setup.
In fact you got flakes clean to the bone with caustic soda solution, detergents and each one of these nutrients, that's actually pretty an easy task to feed to the line and, as a consequence, you need to eliminate it.
Water filtration is therefore as important as the washing line itself.
An excellent filtration system(s) is why is the line to perform well, and contain costs, because in this instance also, we are talking about hot water thus energy costs are participating as well.
Next step would be to transform your flakes plastic extruders into very clear pellets upgrading the quality to the very best.
To know more concerning this, go to SSP site where is writeen likewise how to avoid the traditional SSP and get the same or better top quality without slimming down and get it FDA approved.