Thermoplastic resin-combined glass fiber base material and process for its production
AssigneeAsahi Fiber Glass Company, Limited
InventorsToru Mizukami, Kengo Ozaki
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Abstract
A thermoplastic resin-combined glass fiber base material, which comprises a glass fiber strand having a plurality of glass monofilaments bundled and a thermoplastic resin impregnated thereto, and which: A) has a string form with an average diameter of from 0.2 to 1.5 mm, B) has a glass content of from 15 to 80 vol %, C) has an impregnation rate of the thermoplastic resin of at least 95%, and D) satisfies R≦30D×V, where R is the radius of curvature (mm) representing the buckling limit in bending, D is the average diameter (mm), and V is the glass content (vol %/100).
Claims7
A thermoplastic resin-combined glass fiber base material, which comprises a glass fiber strand having a plurality of glass monofilaments bundled and a thermoplastic resin impregnated thereto, and which:
- A) has a string form with an average diameter of from 0.2 to 1.5 mm,
- B) has a glass content of from 15 to 80 vol %,
- C) has an impregnation rate of the thermoplastic resin of at least 95%, and
- D) satisfies R≦=30D×V, where R is the radius of curvature (mm) representing the buckling limit in bending, D is the average diameter (mm), and V is the glass content (vol %/100).
A process for producing a thermoplastic resin-combined glass fiber base material, which comprises impregnating a thermoplastic resin by a melt impregnation method to a glass fiber strand obtained by bundling a plurality of glass monofilaments without applying splitting thereto, followed by pultrusion from a nozzle and winding up, to obtain a thermoplastic resin-combined glass fiber base material which comprises a glass fiber strand having a plurality of glass monofilaments bundled and a thermoplastic resin impregnated thereto, and which:
- A) has a string form with an average diameter of from 0.2 to 1.5 mm,
- B) has a glass content of from 15 to 80 vol %,
- C) has an impregnation rate of the thermoplastic resin of at least 95%, and
- D) satisfies R≦30D×V, where R is the radius of curvature (mm) representing the buckling limit in bending, D is the average diameter (mm), and V is the glass content (vol %/100).
Dependencies are inferred from the claim text.