Απ' ό,τι φαίνεται το thermosoftening και το thermoplastic είναι συνώνυμα, γι'αυτό δίνω το θερμοπλαστικό που το βρίσκω
και σε ελληνικά site.

One way to classify polymers (plastics) is by their response to heat. All plastics can bemoulded when they are made, and then set hard into shape as they cool. After this,*thermosoftening* (also called *thermoplastic*) plastics can be remelted, and thenreshaped.
http://72.14.203.104/search?q=cache:W0VQobbmbCoJ:www.chemsoc...



http://www.google.com.gr/search?hl=el&q=θερμοπλαστικό&meta=

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Note added at 50 mins (2006-01-28 19:15:08 GMT)
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Addition polymers are called thermoplastic (thermosoftening) polymers because they melt easily. They may be recycled because they can be melted and used again but, when they burn, they may form poisonous gases.
http://www.uq.edu.au/_School_Science_Lessons/topic09.html

In the 1930s, some new types of synthetic plastic began to be made which had distinctly different properties to those of Bakelite and other thermosetting plastics. They soften (and can be moulded) when heated, and harden when cooled, a cycle which can be repeated over and over again. These plastics are described as thermosoftening or thermoplastic, which literally means "heat mouldable".
http://www.chemsoc.org/networks/learnnet/plasticsbackground....