 Head tooling parison adapter plates |
| I claim: 1. Plastic blow molding equipment consisting of: a die housing having a tubular chamber ... |
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| Adhesive spray gun and nozzle attachment |
| OF THE DRAWINGS The structure, operation and advantages of the presently preferred embodiment of ... |
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| Process for preparing non-woven webs |
| What is claimed is: 1. A process for producing a non-woven web of thermoplastic polymer fibers ... |
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| Melt blow die |
| To these ends, according to the present invention, there is provided a melt blow die comprising: a ... |
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| Fluidic oscillating nozzle |
| The two requirements of high impact energy density (requiring a zero-degree jet) and the large area ... |
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| Fluidic oscillating nozzle |
| The two requirements of high impact energy density (requiring a zero-degree jet) and the large area ... |
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| Spinning pack for wet spinning bicomponent filaments |
| The present invention provides a spinning pack useful for wet spinning bicomponent filaments. The ... |
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| Process and system for producing multi-layer extrudate |
| An object of the invention is to make available a coextrusion adapter with an adjustable slide, ... |
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| Method of configuring extrudate flowing from an extruder die assembly |
| O THE DRAWING With general reference to the drawing for like parts and particular reference to FIGS... |
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| Method for gas-aided dispensing of liquid materials |
| The invention provides an improved apparatus and method for dispensing liquid material to form a ... |
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Twin chambered gas distribution system for melt blown microfiber production
| Details |
Inventors: Langdon, Roy A.;
Assignee: Beloit Corporation (Beloit, WI)
Primary Examiner: Love; John J.
Assistant Examiner:
Attorney, Agent or Firm: Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson
Forming system for generating from heated, pressurized gas a pair of flattened, angularly colliding gas streams, each stream being adapted to be on a different opposed side of a die head producing a plurality of generally aligned, spaced, hot melt strands of polymeric material or the like. The system employs a plenum chamber on each such opposed side, and heated, pressurized gas enters into and passes from each such chamber through a slotted nozzle associated therewith. The nozzles are positioned to produce the desired colliding gas streams. Each stream is substantially identical to the other. |
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DETAILED DESCRIPTION There has now been discovered an improved apparatus and associated process adapted for forming a pair of flattened, angularly colliding gas streams.
The apparatus employs no parts which move during operation and the associated process employs a pressure drop in each of a pair of gas streams.
Each gas stream of such pair is intended to have substantially uniform properties, especially as respects temperature and pressure, and to be substantially identical to the other gas stream in such properties.
Each gas stream is normally located in use on a different opposed side of a plurality of generally aligned, speced hot melt strands of polymeric material, or the like, of the type characteristically used in the manufacture of melt blown microfibers and non-woven webs thereof.
Each gas stream is produced through the use of its own separate single plenum chamber arrangement, one such arrangement being on each opposed side of such strand plurality.
Heated, pressurized gas is fed to each plenum chamber wherein gas characteristics (such as temperature and pressure) equalize, and then each stream exits through a nozzle slot in each such chamber as a gas stream adapted to flow against one side of a row of strands being generated, equal but opposite stream angles being used.
It is an object of this invention to provide a system for achieving improved gas stream uniformity in a gas stream supply system for a melt blown microfiber production system.
Another object of this invention is to avoid the use of the prior art "pipe organ" arrangement.
Another object is to achieve a system for producing a gas stream supply for melt blown microfibers which avoids the temperature and even pressure variations of prior art systems and which is suitable for the production of substantially uniform pairs of gas streams for such a gas stream supply.
Another object of this invention is to produce a gas stream supply system for melt blown microfibers which uses a twin single plenum chamber arrangement with one plenum chamber being used for each individual one of the gas stream pair generated by such suply system
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