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What is the difference between injection molding in thermoplastics and injection molding in thermosetting plastics?
Wiki User
∙ 10y ago
hi...
EXTRUSION MOULDING means after the polymer granules are fed in hopper
then it melts in barrel and go thru the rotating screw....a mould is fitted at the end of this assembly that continuously extrudes the polymer in a continuous long particular shape as pipe etc. this later can b cut at regular intervals if needed...
while in INJECTION MOLDING as the molten polymer reaches the mold it takes the shape there cooled and then taken out frm the mold...if it consists of runners etc.then its separated and then the process agn starts...
thus extrusion molding is a continuous process while injection molding is not.
extrusion moulding is a continuous process, it gives a constant section.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoForging is a process in which the material is given shape by giving localized compressive forces in the form of hard blows of hammer whereas extrusion is a process in which the material is given shape by pushing through a die of fixed cross section such as to produce objects of desired cross section.
Wiki User
∙ 10y agoThermosetting plastic materials have the cost-saving advantage in that they can be injection molded and therefore have faster cycling times than compression- or transfer- molded thermosets.
Wiki User
∙ 11y agoIn screw type injection moulding the melted mould is pushed inside by means of the screw movement, where as in plunger type reciprocating movement is used to push the melted plastic into the die.
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Two types of thermoplastic?
thermoplastics and thermosetting plastics thermoplastics go soft when exposed to heat thermosetting plastics set (harden) when exposed to heat only thermoplastics are recyclable
Why are thermo plastic and thermosetting plastic different?
Thermoplastics plastics can be heated and then moulded into a shape or form, but thermosetting cannot. Each plastic can be moulded into a 'shape or form', it is just that thermoplastics, once they have been moulded, they can be re-heated and moulded again, where-as once thermosetting plastics have been moulded, if re-heated and you try to remould it, it will just make it brittle and snap instead.
What are the benefits of thermoplastics?
More flexible than thermosetting plastics: they can undergo both elastic and plastic deformation without too much trouble. They can also be reformed and remoulded when reheated however they cannot withstand temperatures as high as thermosetting plastics.
Do thermo plastics of cross links between chains?
Thermosetting plastics
What does thermosetting plastic mean?
the structure of thermosetting plastics are Ø Thermoplastics have long chains which are tangled together in no formal pattern Ø They have very few cross links which means that when heated they become soft allowing them to bent, pressed and formed into different shapes. Ø They become stiff as they cool
What are the 3 types of plastic?
Elastomers, Thermosetting plastics,Thermoplastics.
What two families of plastic are there?
thermoplastic plastics (recyclable)thermosetting plastics (non-recyclable)
Can we substitute thermosetting plastics with thermo plastics?
Thermoplastics are the only ones that can be recycled. Thermosets cannot be recycled.
Two types of thermoplastic?
thermoplastics and thermosetting plastics thermoplastics go soft when exposed to heat thermosetting plastics set (harden) when exposed to heat only thermoplastics are recyclable
What are the names of the two main gropes of plastics?
By properties they are Thermosetting plastics and Thermoplastics
What are the 2 different types of plastics called?
i think the answers you are looking for are thermoplastics and thermosetting plastics :)
What are the different types of plastic called?
i think the answers you are looking for are thermoplastics and thermosetting plastics :)
What is the opposite of thermosoftening?
Thermosetting, these plastics are rigid, resistant to higher temperatures compared with thermoplastics and once set, a thermosetting plastic cannot be remoulded.
Why are thermo plastic and thermosetting plastic different?
Thermoplastics plastics can be heated and then moulded into a shape or form, but thermosetting cannot. Each plastic can be moulded into a 'shape or form', it is just that thermoplastics, once they have been moulded, they can be re-heated and moulded again, where-as once thermosetting plastics have been moulded, if re-heated and you try to remould it, it will just make it brittle and snap instead.
What has the author Y Sankaranarayanan written?
Y. Sankaranarayanan has written: 'Plastics and shellacs' -- subject(s): Shellac and shellacking, Thermoplastics, Thermosetting plastics
Explain why saucepan handles is made of thermosetting plastics?
Thermoplastics can be reheated and reshaped, however Thermosetting plastics undergo a chemical change resulting in them becoming permanently rigid, i.e they cannot be reheated and reshaped.
What type of plastic are bottles made out of?
There are two types of plastics: thermoplastics and thermosetting polymers. Thermoplastics are the plastics that don't undergo chemical change in their composition when heated and can be moulded again and again; examples are polyethylene, polystyrene, polyvinyl chloride and polytetrafluoroethylene (PTFE).[3] Thermosets can melt and take shape once; after they have solidified, they stay solid.
