Device and method for producing a foam material
AssigneeNordson Corporation
InventorsFrank Jones, Marcel Puffe
Life of this patent
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Abstract
A device for producing a foam material, comprising a gas supply line which is connectable at a first end to a gas source, a material supply line which is connectable at a first end to a material supply source, a material transporting device which is connected to a second end of the material supply line, and a mixing device into which material and gas may be introduced and in which they may be mixed together, and from which a homogeneous mixed foam is deliverable from an output orifice.
Claims18
A method for producing a foam material, comprising:
- feeding a gas from a source of gas;
- feeding a material from a source of material;
- transporting the material by means of a material feeder device;
- bringing the gas and the material together at a location while preventing flow of the material toward the source of gas at that location;
- transporting the gas and the material to a mixer by means of a foam feeder device;
- mixing the gas and the material in the mixer;
- and
- dispensing a foam from a discharge opening in the mixer.
A method for producing a foam material, comprising:
- feeding a gas from a source of gas;
- feeding a material from a source of material;
- transporting the material by means of a material feeder device;
- mixing the gas and the material in a mixer;
- dispensing a foam from a discharge opening in the mixer;
- bringing the gas and the material together upstream from or inside a foam feeder device;
- transporting the gas and the material to the mixer by means of the foam feeder device;
- and
- restricting the flow of foam downstream of the foam feeder device.
A method for producing a foam material, comprising:
- feeding a gas from a source of gas;
- feeding a material from a source of material;
- transporting the material by means of a material feeder device;
- mixing the gas and the material in a mixer;
- dispensing a foam from a discharge opening in the mixer;
- bringing the gas and the material together upstream from or inside a foam feeder device;
- transporting the gas and the material to the mixer by means of the foam feeder device;
- and
- recirculating the material at least partially from the discharge opening of the mixer to the source of material such that the material flows into an air-filled upper zone of the source of material.
A method for producing a foam material, comprising:
- feeding a gas from a source of gas;
- feeding a material from a source of material;
- transporting the material by means of a material feeder device;
- mixing the gas and the material in a mixer;
- dispensing a foam from a discharge opening in the mixer;
- bringing the gas and the material together upstream from or inside a foam feeder device;
- transporting the gas and the material to the mixer by means of the foam feeder device;
- and
- generating a speed-dependent control signal, supplying the speed-dependent control signal from the material feeder device, processing the control signal at a controller, and using the control signal to control a gas flow control valve in order to set a specific gas flow rate through a gas feed line to thereby achieve a specific viscosity of the foam downstream of the foam feeder device.
Dependencies are inferred from the claim text.