Plastic (material): materials consisting of any of a wide range of synthetic or semi-synthetic organic compounds that can be molded into solid objects. This includes thermos-softening & thermos-hardening plastics.
Questions tagged [plastic]
124 questions
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How to determine whether plastic is ABS or Polypropylene?
I have a pump that I want to use to pump a solvent. It is hard black plastic so I'm pretty confident it is either ABS or polypropylene (it wasn't expensive enough to be some more exotic plastic).
My solvent will rapidly dissolve ABS but it will work…
ericksonla
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What is the composition of Arizona Ice Tea 1gal plastic bottles stamped #7 OTHER and PP COMPATIBLE?
I wished to know the composition of Arizona 1gal plastic jugs that I have.
The bottom is stamped PP COMPATIBLE and has a #7 OTHER RIC code.
I understand PP recyclable would be #5 triangle. #7 means it doesn't fit in the plastic recyclable…
Nissim Nanach
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Does plastic expand at colder temperatures?
After placing a dry solid block of nonporous plastic material in the freezer for a while, I was surprised to find out when I retrieved it that it had expanded globally by a few inches. Which type of plastic must this be and do plastics expand at…
aitía
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PTFE sheet vacuum forming
I need to make PTFE caps on my test tubes. Why PTFE? The test tubes contain industrial solvent mixtures & the rubber caps that came with the test tubes are very, very slowly being dissolved.
I need about a dozen caps. If I were to make it out of…
kozner
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Why there are grooves at inner side of plastic nasal spray cap?
My suggestion was that they are for Tamper-evident band, but there isn't one beneath the cap.
Kolos
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What manufacturing process could be used for this part?
How might the "shell" in this picture be manufactured? What process could be used to achieve this geometry? It is made from plastic.
Stewart Agustin
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What sort of plastic is this? What would you call this color scheme?
I saw this plastic on a baby changing station and was wondering what sort of plastic it was. It seems like injection molding plastic but I'm not sure which one and also what pepper color scheme that is.
user9826
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Plastic tensile bars for Tye testing
We make plastic tensile bars per astm 638. The problem that I'm having is the bars are breaking outside the gauge marks in the reduced section of the samples. I'd like to know as to what I can do to prevent this ?
Thanks
Mike
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Plastic wrapper stretch
I'm studying how industrial plastic film pallet wrappers work. The wrappers apply a certain amount of pre-stretch to the plastic film (by means of different rolls) before applying it to the object that has to be wrapped.
If the object to be wrapped…
Val
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Plastics that approach brass and aluminum for strength?
This question is asked out of ignorance, not trying to ask a trick question.
Is there a plastic almost as strong as aluminum or brass, not easily deformed, resistant to flexing, that could be used to mold the device shown in the image?
It needs to…
Tim
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If I make refillable yogurt and sour cream pots (that I fill as a service), would that be better than buying yogurt in plastic pots and recycling?
I am trying to find out how I can get yogurt or sour cream in an eco friendly way. I know the films on the supermarket plastic pots are currently not recycled, so that's not great...
If I start a yogurt refilling service (i.e. like a milk man), what…
Maxicl
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What FDA compliant plastics can have contact with alochol (wine)?
I am able to find that the class for materials that can be in contact with wine (~10-15% alcohol by volume) is called Class VI-A and Class VI-C, but I am not able to find a list of materials that are approved for those classes. Does anyone have…
Davbog
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