Abstract:
Method and apparatus are provided for fluidically attenuating streams of material into filaments wherein the blower is designed according to a number of parameters to provide a stream of working fluid at sonic velocity.
Abstract:
A fiber insulation product comprising hollow fibers. Each hollow fiber may be composed of at least two different thermoplastic insulating materials, such as glasses, having differing coefficients of thermal expansion, with each of the hollow fibers being an irregular-shape exhibiting a substantially uniform volume filling nature, and providing improved recovery and thermal conductivity abilities even in the absence of a binder material. An apparatus for making hollow fibers for such a product is also provided.
Abstract:
Apparatus for making dual component fibers is provided and includes a spinner having a peripheral wall. The spinner includes orifices located on the peripheral wall thereof for centrifuging the dual component fibers, with the spinner being divided into a series of generally vertically-aligned compartments by baffles positioned circumferentially around the interior of the peripheral wall. First and second molten thermoplastic materials are supplied to the spinner and directed into alternate ones of the compartments so that adjacent compartments contain different thermoplastic materials. Passages are located in each of the compartments through which the respective molten thermoplastic materials flow to the orifices on the peripheral wall of the spinner. The passages in adjacent ones of the compartments communicate with one another and with the orifices to join the first and second molten thermoplastic materials together into dual component fibers.
Abstract:
A method of making textile glass fibers in a rotary process is disclosed. A spinner bearing molten glass rotates on its axis of rotation. Glass is forced through orifices and the resulting fibers are moved along paths generally perpendicular to the axis of rotation. Prior to commingling or turn down of the fibers a quenching liquid is applied to the fibers.
Abstract:
A downwardly moving cylindrical veil of mineral fibers is distributed to form a mineral fiber product by impinging on the interior of the veil jets of gas from an internal blower positioned within the veil to increase the angular velocity of the veil, thereby causing the veil tobreak up into an incoherent flow of mineral fibers.
Abstract:
A method and apparatus for producing a mat of continuous glass filaments at increased throughput while maintaining desirable tensile strength characteristics by means of a fluidic distribution system employing diagonally opposed Coanda effect surfaces.