초록 ▼

A system for mixing and dispensing a structural foam formed from two or more component foam parts mixed together in a predetermined mass ratio. At least a first one of said component parts is pre-mixed with a blowing agent and maintained under pressure. The system comprises volumetric flow sensors t

A system for mixing and dispensing a structural foam formed from two or more component foam parts mixed together in a predetermined mass ratio. At least a first one of said component parts is pre-mixed with a blowing agent and maintained under pressure. The system comprises volumetric flow sensors to measure the rate of flow of each of the component foam parts to be mixed, a feedback loop comprising a digital computer, to determine whether the predetermined mass ratio has been achieved on an instantaneous basis, and at least one gear-type variable flow controller to reduce the flow rate of said first one of the component foam parts to be mixed. The gear-type variable flow controller is adjustable by at least one of an electro-mechanical, hydraulic or electrical type braking device in response to the rate of flow data measured by said volumetric flow sensor.

대표청구항 ▼

1. A system for mixing and dispensing a structural foam formed from two or more component foam parts mixed together in a predetermined mass ratio, wherein at least a first one of said component parts is pre-mixed with a blowing agent and maintained under pressure, said system comprising: volumetr

1. A system for mixing and dispensing a structural foam formed from two or more component foam parts mixed together in a predetermined mass ratio, wherein at least a first one of said component parts is pre-mixed with a blowing agent and maintained under pressure, said system comprising: volumetric flow sensors to measure the rate of flow of each of the component foam parts to be mixed; a feedback loop comprising a digital computer, to determine whether the predetermined mass ratio has been achieved on an instantaneous basis, and at least one gear-type variable flow controller to reduce the flow rate of said first one of the component foam parts to be mixed, said gear-type variable flow controller adjustable by at least one of an electro-mechanical, hydraulic or electrical type braking device in response to the rate of flow data measured by said volumetric flow sensor. 2. The system according to claim 1, wherein said component foam parts are maintained at a constant temperature and pressure.