Plastic Bottle Types...

[delikid]

With many of us in the US experiencing 100*+ temps these days, one thing to keep in mind is the characteristics of each type of plastic bottle you use. Some solvents in some of the products we use can breakdown plastic very quickly. Other can't handle extreme heat, or cold.



If you are to transfer product from the jug or bucket you bought, into a usable-sized bottle, good rule of thumb is the note the type of bottle your product came in. The bottle type is usually on the bottle, like below, and get that type bottle for the smaller, usable bottle:

I threw together a lil chart on chracteristics of plastics and attached it to this mail [PLASTIC_BOTTLE_CHARACTERISTICS.pdf].



:2thumbs:

 

[BlueZero]

Cool chart! Thanks for taking the time.



I always try to stick with HDPE bottles. I've tried a few PET ones but they don't work as well. I notice that the oxygen barrier isn't very good with HDPE. Does that affect our products much?

 

[delikid]

I think this gets into molecular chemistry more that I know about... LOL



From the Journal of Plastic Film and Sheeting, Vol. 19, No. 1, 209-220 (2003)

"Many variables affect high-density polyethylene (HDPE) film’s oxygen transmission rates (OTR), and water vapor transmission rates (WVTR). These variables include film crystalline structure, relaxation rates of molten polyethylene, polyethylene manufacturing technology, polyethylene resin physical properties, atmospheric conditions, and film fabrication technology and structure."



From what I (being of almost no scientific knowledge of this subject) know, the OTR is more related to the realm of food products rather than polish, waxes, etc. I could be wrong abotu that. But, containers that hold food that can spoil due to oxygen absorption is what the OTR is related to. I just try to stick to the rule of "what the type on the bottom of the BIG bottle of ___ I bought?"

 

[ZoranC]

This is extremely valuable! Thank you very much!