Apparatus for wet manufacturing fiber reinforced thermoplastic resin sheet
First Claim
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1. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
- (a) a dispersion supply container comprising container means for containing a dispersing liquid comprising a reinforcing fiber and a resin;
(b) a manifold connected to said dispersion supply container, said manifold including a shell having a substantially central axis wherein said shell is substantially symmetrically shaped around said axis;
(c) a dispersing liquid inlet and a plurality of dispersing liquid outlets symmetrically positioned about said shell axis,whereby dispersing liquid introduced into said manifold through said inlet is substantially spirally and/or vertically circulated within said shell prior to exiting through said outlets; and
(d) a distributor connected to said manifold to receive dispersing liquid from said outlets to substantially uniformly distribute said dispersing liquid to make a fiber reinforced thermoplastic resin sheet.
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Abstract
The present invention provides an apparatus for wet manufacturing a fiber reinforced thermoplastic resin sheet, having a manifold capable of uniformly distributing the solid concentrations without being affected by inertia force caused by the difference in shape between solids. The invention further provides an apparatus for wet manufacturing a fiber reinforced resin sheet having a buffer inlet or reservoir headbox capable of permitting inhibition of variations of the unit weight distribution under the effect of the dynamic pressure of the raw material dispersing liquid and the resultant fluctuations.
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Citations
24 Claims
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1. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container comprising container means for containing a dispersing liquid comprising a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold including a shell having a substantially central axis wherein said shell is substantially symmetrically shaped around said axis; (c) a dispersing liquid inlet and a plurality of dispersing liquid outlets symmetrically positioned about said shell axis, whereby dispersing liquid introduced into said manifold through said inlet is substantially spirally and/or vertically circulated within said shell prior to exiting through said outlets; and (d) a distributor connected to said manifold to receive dispersing liquid from said outlets to substantially uniformly distribute said dispersing liquid to make a fiber reinforced thermoplastic resin sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold having a plurality of dispersing liquid outlets; and (c) a distributor connected to said manifold with a plurality of pipes, said distributor comprising a buffer inlet adapted to cause said dispersing liquid to forcibly impact a buffer surface interposed in a flow path of said dispersing liquid, and wherein the interior of said buffer inlet is divided into a plurality of receiving sections, each section receiving said dispersing liquid and flows of the dispersing liquid joining after each section and prior to delivering said dispersing liquid to a headbox. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to the dispersion supply container; and (c) a distributor connected to said manifold, said distributor comprising a reservoir headbox capable of dispensing and maintaining said dispersing liquid at a predetermined depth on a moving endless mesh belt. - View Dependent Claims (19)
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20. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold having a plurality of dispersing liquid outlets; and (c) a distributor connected to said manifold with a plurality of pipes, said distributor being divided into a holding section, a buffer inlet, and a dispensing section by a substantially vertically oriented divider, said holding section being divided by partitions into a plurality of receiving sections connected to said manifold, said buffer inlet adapted to cause said dispersing liquid to forcibly impact a buffer surface interposed in a flow path of said dispersing liquid in said receiving sections, and said dispensing section capable of dispensing and maintaining, said dispersing liquid at a predetermined depth on a moving endless mesh belt, whereby dispersing liquid enters lower portions of said receiving sections, travels upwardly to an upper portion of said divider, mixes together and flows beyond said divider and into said dispensing section. - View Dependent Claims (21)
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22. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold having a plurality of dispersing liquid outlets; and (c) a distributor connected to said manifold with a plurality of pipes, said distributor comprising a buffer inlet adapted to cause said dispersing liquid to forcibly impact a surface interposed in a flow path of said dispersing liquid, and further comprising at least one weir positioned in said flow path after said buffer inlet, prior to delivering said dispersing liquid to a headbox.
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23. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold including a shell having a substantially central axis wherein said shell is substantially symmetrically shaped around said axis; (c) a dispersing liquid inlet and a plurality of dispersing liquid outlets symmetrically positioned about said shell axis; wherein dispersing liquid introduced into said manifold through said inlet is substantially spirally and/or vertically circulated within said shell prior to exiting through said outlets; and (d) a distributor connected to said manifold with a plurality of pipes, said distributor comprising a buffer inlet adapted to cause said dispersing liquid to forcibly impact a buffer surface interposed in a flow path of said dispersing liquid, and wherein the interior of said buffer inlet is divided into a plurality of receiving sections, each section receiving said dispersing liquid and flows of the dispersing liquid joining after each section and prior to delivering said dispersing liquid to a headbox.
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24. An apparatus for manufacturing a fiber reinforced thermoplastic resin sheet comprising:
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(a) a dispersion supply container containing a dispersing liquid containing a reinforcing fiber and a resin; (b) a manifold connected to said dispersion supply container, said manifold including a shell having a substantially central axis wherein said shell is substantially symmetrically shaped around said axis; (c) a dispersing liquid inlet and a plurality of dispersing liquid outlets symmetrically positioned about said shell axis, whereby dispersing liquid introduced into said manifold through said inlet is substantially spirally and/or vertically circulated within said shell prior to exiting through said outlets; and (d) a distributor connected to said manifold with a plurality of pipes, said distributor being divided into a holding section, a buffer inlet, and a dispensing section by a substantially vertically oriented divider, said holding section being divided by partitions into a plurality of receiving sections connected to said manifold, said buffer inlet adapted to cause said dispersing liquid to forcibly impact a buffer surface interposed in a flow path of said dispersing liquid in said receiving sections, and said dispensing section capable of dispensing and maintaining said dispersing liquid at a predetermined depth on a moving endless mesh belt, whereby dispersing liquid enters lower portions of said receiving sections, travels upwardly to an upper portion of said divider, mixes together and flows beyond said divider and into said dispensing section.
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Specification