How is plastic shaped?
Plastic is shaped in many ways. The liquid can be pushed through a nozzle to form sheets, tubes and fibres. Molten plastic may be poured into moulds. More complicated shapes can be made through vacuum farming. In this process, a sheet of warm plastic is kept over a mould. The air is then sucked from under it. This causes the sheet to be pulled firmly against the sides of the mould. When the plastic cools, it retains the mould’s shape.
Related posts:
What is condensation? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
Why do parts of our body fall asleep?Complete General Knowledge Question and Answer for Class 6, 7, ...
General Knowledge
What in the soil makes plants grow? Complete General Knowledge Question and Answer for Class 6, 7, 8...
General Knowledge
GK Question "When The Man Started Drinking Milk?" general knowledge book English 2021 current affair...
General Knowledge
Did the Minoans play sports? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
Do you know “Cochin or Kochi, Venice of the East”.
Do you know
Do you know “First marble structure in India”.
Do you know
Do you know “HauzKhas, old and new”.
Do you know
What is the difference between warm-blooded and cold-blooded animals?Complete General Knowledge Ques...
General Knowledge
Were there surgeries in ancient times? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Do you know “Jain manuscript, a world treasure”.
Do you know
GK Question "Who Made The Discovery Of Electricity?" general knowledge book English 2021 current aff...
General Knowledge
GK Question "How The Earthquakes Are Recorded On A Seismograph?" general knowledge book English 2021...
General Knowledge
Can echoes travel through water? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
Why does water have a wrinkling effect on the skin? Complete General Knowledge Question and Answer f...
General Knowledge
What is conservation? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
GK Question "Cartoons Were Invented By Whom?" general knowledge book English 2021 current affairs qu...
General Knowledge
Why are port and starboard so called? Complete General Knowledge Question and Answer for Class 6, 7,...
General Knowledge
Why do giraffes have very long necks? Complete General Knowledge Question and Answer for Class 6, 7,...
General Knowledge
How did baby kangaroos get the name, 'Joey'?Complete General Knowledge Question and Answer for Class...
General Knowledge