The Use of Plastic Regrinded Material 2

[xzwhhl]

Hello,

Amigos.

The Use of Plastic Regrind Material

I'm investing about this theme. I need to know how works the use of 100% recycled plastic. Or in what proporcion I can re-using it.

Do you know some regulation or standars concerned to this topic?

Because this should be a great savings for a molding industry.

Thanks

Ruben D

 

[plastx]

The amount of regrind is dependant on which plastic, how it was processed, and what the final part will be used for in the end. There are some guidelines such as UL which will dictate a % that can be used and still qualify for UL94 flammability. Check with UL by material for specific %. In general I believe typically the level is 15% for clean, properly processed plastic. Also if you need optical clarity, FDA approvals for the final product regrind is best avoided. Check with the material supplier for their technical assessment on what will happen to certain properties (impact, tensile) and color as the % goes up and what happens as the 1st, 2nd, 3rd.... generation of regrind goes into the parts.

Using regrind is a good idea instead of shipping to a landfill. In the past where I couldn't use regrind I had a lower end or different type of product that used 100% regrind to bleed off the supply. Sometimes these products could use 100% but still met all the requirements for this product so it worked well.

 

[plasgears]

In highly stressed engineering materials, 10% regrind is the norm. Any more and you're asking for trouble.

We disqualified a supplier of suspected 100% regrind in a critical part. The design was in production already, and we had a rash of field failures. We lost the contract, and gained an enemy in the marketplace.

There's a reason for quality programs, and this was a good example.