Claims
- 1. A wet process for making a thermoplastic composition which can be transformed by molding, molding-stamping or thermomolding into a final product, which comprises forming an aqueous suspension containing reinforcing fibers, at least one thermoplastic resin and at least one adjuvant, dewatering and drying the suspension on a screen, wherein the thermoplastic resin and the adjuvant are intimately mixed in each grain of a powder having a granulometry larger than the mesh of the screen on which the composition is dewatered and which powder is added to the suspension prior to dewatering on the screen to produce a thermoplastic composition for thermoprocessing which contains substantially all of the adjuvants; said powder having been formed by grinding granules formed by extrusion of an intimate mixture of the thermoplastic resin and the adjuvant.
- 2. A process according to claim 18 wherein the wet process is a papermaking process and the screen is part of the form used in the papermaking process.
- 3. A process according to claim 4, wherein the process is carried out on the flat table of the papermaking process.
- 4. A process according to claim 18, wherein the reinforcing fibers are glass fibers, of a length between 5 and 30 mm, and having a unitary diameter between 10 and 20 micrometers, and wherein their concentration in dry weight relative to the said material is between 15 and 60 percent.
- 5. A process according to claim x18 which additionally includes at least one of the following fibers: unoxidizable steel fibers, aluminized glass fibers or cellulosic fibers.
- 6. A process according to claim 4, wherein the powder has an average diameter equal to or greater than 100 micrometers.
- 7. A process according to claim 5, wherein the granules additionally include at least one adjuvant which is carbon black, an antioxidant agent, an antistatic agent or mixtures thereof.
- 8. A process according to claim 5, wherein the reinforcing fibers have undergone a post-oiling of the organosilane or organosilicone type.
Priority Claims (1)
Number |
Date |
Country |
Kind |
87 02987 |
Mar 1987 |
FRX |
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Parent Case Info
This application is a continuation of application Ser. No. 161,975, filed Feb. 29, 1988, abandoned.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
Country |
Parent |
161975 |
Feb 1988 |
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