Claims
- 1. A process for the treatment of heterogeneous plastic materials consisting essentially of the steps of:
- providing at least two different thermoplastic polymers or copolymers in a divided state,
- subjecting said polymers or copolymers to a treatment of agitation and stirring by agitator and stirring means,
- determining the energy consumed by said agitator and stirring means,
- stopping said treatment after the occurrence of a peak intensity in the energy consumed by said agitator and stirring means during said subjecting step, and
- recovering the homogeneous thermoplastic material product obtained after said stopping step.
- 2. A process according to claim 1, wherein said treatment of agitation and stirring is stopped when a substantially constant value of said energy consumption is achieved after the occurrence of said peak increase thereof.
- 3. A process according to claim 1, wherein said treatment of agitation is carried out in a chamber provided with mechanical stirring means.
- 4. A process according to claim 3, wherein said stirring means comprise a rotor provided with a plurality of blades.
- 5. A process according to claim 1 for the treatment of a raw material containing at least two different thermoplastic polymers or copolymers in a divided state, and at least one solid material which is not miscible with said thermoplastic polymers or copolymers, wherein at least one filtering step of the homogeneous thermoplastic material product obtained is carried out, so as to separate therefrom the particles of material different from said product that are dispersed therein.
- 6. A process according to claim 1, wherein the recovered homogeneous thermoplastic material product is subjected to a granulation treatment.
- 7. A process according to claim 5, wherein the recovered homogeneous thermoplastic material product is subjected to a granulation treatment.
- 8. A part of plastic material made by injection molding a homogeneous thermoplastic material obtained by the process of claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
TO91A0288 |
Apr 1991 |
ITX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/736,027, filed Oct. 23, 1996, now abandoned, which was a continuation of application Ser. No. 08/546,620, filed Oct. 23, 1995, now abandoned, which was a continuation of application Ser. No. 08/296,864, filed Aug. 26, 1994, now abandoned, which was a continuation of application Ser. No. 07/955,710, filed as PCT/CH92/00064,Apr. 8, 1994, published as WO92/18310, Oct. 29, 1992, now abandoned.
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Continuations (4)
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Number |
Date |
Country |
Parent |
736027 |
Oct 1996 |
|
Parent |
546620 |
Oct 1995 |
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Parent |
296864 |
Aug 1994 |
|
Parent |
955710 |
Dec 1992 |
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