Methods and apparatus for producing high quality closed cell foams for use in applications such as coatings, sealant beads, seam filling and gaskets. An in-line single pass static mixing device containing a very large number of individual mixing elements is used to homogeneously disperse a gas throughout a highly viscous liquid polymeric material such as a plastisol, silicone, butyl or urethane based material.
The present invention is a continuous process for preparing formulations useful for making filled polymer carpet backings. The present invention particularly incorporates polyisocyanate as a reactive diluent in a continuous process for preparing filled polyurethane polymers. Use of the present invention allows production of carpet backings that incorporate high loadings of filler materials.
The present invention is a continuous process for preparing formulations useful for making filled polymer carpet backings. The present invention particularly incorporates polyisocyanate as a reactive diluent in a continuous process for preparing filled polyurethane polymers. Use of the present invention allows production of carpet backings that incorporate high loadings of filler materials.
A fuel processing device is provided that produces properly sized fuel aerosol particles that when mixed with combustion air, reduces or eliminates detonation (knock) in internal combustion engines thus reducing fuel octane requirements for engines of a given compression ratio. The device includes an adapter between a fuel injector and a port for the fuel injector, the adapter being generally of a hollow cylindrical configuration. A plurality of plates are disposed in the adapter, the plates provided with a central opening, with radially extending slots extending away from the central opening. Each slot has one edge configured with a vane that creates turbulence in the air/fuel mix passing through the adapter so that larger droplets are broken up into smaller droplets until an optimum droplet size is reached.
A method and apparatus for post mixing an additive with a hot melt adhesives. The method includes the steps of providing a source of molten hot melt adhesive, feeding the hot melt adhesive to an inlet of a mixer, simultaneously feeding an additive for the hot melt adhesive to the inlet of the mixer, mixing the additive and molten hot melt adhesive in the mixer to form a homogeneous mixture, and recovering the homogenous mixture. The additive is preferably selected from wetness indicators, antimicrobial agents, pigments, dyes, ultraviolet light absorbers, antioxidants, fluorescent agents, pH indicators and fragrances. The method may be practiced either on a batch basis, or on a continuous basis. The apparatus includes a vessel containing molten hot melt adhesive, a mixer located downstream from the vessel, the mixer having an inlet and an outlet, a first pump located between the vessel and the mixer for pumping molten hot melt adhesive from the vessel to the inlet of the mixer, a source of an additive for the hot melt adhesive, and a second pump located between the source of the additive and the mixer for pumping the additive to the inlet of the mixer. The mixer may comprise either a static mixer or a dynamic mixer.
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.
