Tuesday, Sep 06, 2016 at 09:27
A lot of people seem to be oblivious to the taste of plastic in water ...... if you smoke, drink a lot of strong coffee or spicy food, your sense of taste may
well be compromised.
Personally I drink a lot of water and can taste all sorts of contaminants including detergent if bottles are not properly rinsed.
A lot of that plastic taste will be oily or detergent like plasticisers used in many cheaper plastics
In general PVC is not a good choice for storage or transport of food or water.
PVC by nature is a stiff hardish plastic and requires softners and plasticisers to make it flexible.
These additives leach out of the plastic thru-out its life.
The cheaper the product the worse this is.
AND this is especially true of clear PVC products, some of which will take on a distinctly greasy nature with age.
for food and water, polly propylene, poly ethelyene and silicone are better choices.
PVC however is quite tolerant of oil and lower order solvents like kerosene and petrol.
It must also be understood that many plastics and resins are not impervious ....... they may seem to hold fluids, but with constant exposure or immersion they absorb whatever they are exposed to.
Have a look around the kitchen or
supermarket at the food containers, look for the recycling marks, most of them will be either "pp" Poly prop' or "pet" poly Ethylene
note that there are at least 3 types of plastic jerry can .... water, petrol and diesel .... and there is more to it than colour ....the plastics are differently formulated.
cheers
AnswerID:
604142