Spinneret For Making Hollow Filaments
Patent No. US3340571 (titled "Spinneret For Making Hollow Filaments") was filed by Celanese on Sep 27, 1965. The application was issued on Sep 12, 1967.
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Technical Landscape
In the early 1960s when '571 was filed, synthetic fiber production commonly relied on relatively simple extrusion and drawing techniques. At a time when process control was typically implemented using analog feedback loops, achieving precise control over fiber properties such as diameter and uniformity presented significant challenges. When hardware constraints made real-time adjustments to process parameters non-trivial, maintaining consistent fiber quality required careful manual monitoring and intervention.
Prosecution Position
The disclosed invention addresses the problem of producing synthetic fibers with improved uniformity and controlled properties. It achieves this by introducing a novel apparatus and method for melt spinning, enabling more precise control over the fiber formation process. This results in fibers with enhanced characteristics, overcoming limitations in existing fiber manufacturing capabilities.
Claims
This patent contains zero claims, therefore there are no independent or dependent claims to analyze.
Patent Summary
Patent Family
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US3340571
- Application Number
- US51100365
- Filing Date
- Sep 27, 1965
- Publication Date
- Sep 12, 1967
- External Links
- Slate, USPTO, Google Patents