Abstract A method for the production of a fiber-reinforced resin compound. The method comprises spraying onto a suitable substrate from three respectively different nozzles: 1. an unsaturated polyester resin composition having a viscosity of about 3000 to 15000 Cps at 25°C; 2. a fiber-reinforcing material and 3. a thickening agent of magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxide or beryllium oxide suspended in a liquid polyester resin or a mixture of a liquid polyester resin and styrene, the weight of (1):(2):(3) being 100:20-55:3-30. The individual streams of (1), (2) and (3) intersect one another after exiting from said nozzles and prior to contacting said substrate to form one stream. The method can give a fiber reinforced resin compound having a strength equivalent to or more that of (sheet molding compound) and is simple in operation and can be carried out at a cost equivalent to or less than that bulk molding compound.
A method for the production of a fiber-reinforced resin compound, which comprises spraying onto a suitable substrate from three respectively different nozzles: 1. an unsaturated polyester resin composition having a viscosity of about 3000 to 15000 Cps at 25°C; 2. a fiber-reinforcing material and 3. a thickening agent consisting essentially of magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxide or beryllium oxide suspended in a liquid polyester resin or a mixture of a liquid polyester resin and styrene the amount of liquid resin being about 2 to 5 times by weight of the thickening agent, the weight of (1):(2):(3) being 100:20-55:3-30; said three respective streams of (1), (2) and (3) intersecting one another after exiting from said nozzles and prior to contacting said substrate to form one stream.
Claim 2
Independent Claim
128 words
A method for the production of a fiber-reinforced resin compound, which comprises spraying onto a suitable substrate from three respectively different nozzles: 1. an unsaturated polyester resin composition having a viscosity of about 3000 to 15000 Cps at 25°C; 2. a fiber-reinforcing material and 3. a thickening agent consisting essentially of magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxide or beryllium oxide suspended in a liquid polyester resin or a mixture of a liquid polyester resin and styrene the amount of liquid resin being about 2 to 5 times by weight of the thickening agent, the weight of (1):(2):(3) being 100:20-55:3-30; said three respective streams of (1), (2) and (3) intersecting one another after exiting from said nozzles and prior to contacting said substrate to form one stream.
Claim 3
Dependent Claim
29 words
The method according to claim 1, wherein the unsaturated polyester resin composition contains an unsaturated esterpolymer, styrene, a polymerization catalyst, a filler, a releasing agent and a coloring agent.
Claim 4
Dependent Claim
24 words
The method according to claim 1, wherein the thickening agent is magnesium oxide suspended in a mixture of styrene and a liquid polyester resin.
Claim 5
Dependent Claim
27 words
The method according to claim 1, wherein the fiber-reinforcing material is glass fiber in the form of chopped strands of about 25 mm to about 50 mm.