US3881850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt spinning tower module and circular melt spin block therefor
Assignee: Eastman Kodak Co
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Filing: 1974-01-02
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Granted: 1975-05-06
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Expires: 1994-01-02
Abstract
Abstract A circular melt spinning tower module for melt spinning of polymers into textile filaments, the module having attached to and depending from and around the module multiple quench cabinettake-up assemblies; and a circular melt spin block capping the tower module and having a plurality of spin packs located at equal radial distances from the center of the spin block and spaced at equal interval distances around the block.
Inventors
- 👤 Bruce W Stockbridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
D; D01; D01D; D01D4/00; D01D13/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
225 words
A melt spinning tower module for melt spinning of polymers into textile filaments, the tower module comprising: an upstanding central core; a circular spin block positioned at the top of the central core, and having inlet means for receiving melted polymer within the spin block from a source of supply and having a plurality of spin packs through which the melted polymer is spun from the spin block into a plurality of hot, plastic filaments; and a plurality of quench cabinet-take-up assemblies connected to, extending around and down the outside of the central core for receiving from respective spinning packs in each assembly the hot, plastic filaments; each quench cabinet-take-up assembly including a vertically extending quench cabinet within which the hot, plastic filaments are quenched; a vertically extending quench stack below and following the quench cabinet for continued quenching and curing the hot, plastic filaments into textile filaments; and means below the quench stack for processing the textile filaments as they emerge from the quench stack; said upstanding central core being cylindrical and hollow, and its cylindrical wall forming a back wall for each of the respective quench cabinets; each said back wall defining therethrough an opening; and means for introducing through each of the openings into the quench cabinets a quenching medium directed against the hot, plastic filaments being spun into the quench cabinets.
Claim 2
Dependent Claim
225 words
A melt spinning tower module for melt spinning of polymers into textile filaments, the tower module comprising: an upstanding central core; a circular spin block positioned at the top of the central core, and having inlet means for receiving melted polymer within the spin block from a source of supply and having a plurality of spin packs through which the melted polymer is spun from the spin block into a plurality of hot, plastic filaments; and a plurality of quench cabinet-take-up assemblies connected to, extending around and down the outside of the central core for receiving from respective spinning packs in each assembly the hot, plastic filaments; each quench cabinet-take-up assembly including a vertically extending quench cabinet within which the hot, plastic filaments are quenched; a vertically extending quench stack below and following the quench cabinet for continued quenching and curing the hot, plastic filaments into textile filaments; and means below the quench stack for processing the textile filaments as they emerge from the quench stack; said upstanding central core being cylindrical and hollow, and its cylindrical wall forming a back wall for each of the respective quench cabinets; each said back wall defining therethrough an opening; and means for introducing through each of the openings into the quench cabinets a quenching medium directed against the hot, plastic filaments being spun into the quench cabinets.
Claim 3
Dependent Claim
32 words
A melt spinning tower module as defined in claim 1, a plurality of radial dividers extending from and around the central core and defining the side walls of the respective quench cabinets.
Claim 4
Dependent Claim
96 words
A melt spinning tower module as defined in claim 1, said means for introducing a quenching medium including an inlet into the central core for supplying thereto from a source of supply said quenching medium; first and second chambers for receiving from said inlet said quenching medium, a perforated plate separating said first and second chambers, the quenching medium being diffused by and as it passes through the perforated plate from the first chamber to the second chamber for subsequent passing out of the second chamber through each of said openings into the respective quench cabinets.
Claim 5
Dependent Claim
66 words
A melt spinning tower module as defined in claim 3, said central core including a third chamber; an inlet connected from each of the quench stacks to the third chamber through which inlets the quenching medium is exhausted from the quench stacks into the third chamber; and an outlet connected to the third chamber through which the exhausted quenching medium is exhausted from the third chamber.
Claim 6
Dependent Claim
49 words
A melt spinning tower module as defined in claim 3, said second chamber being divided into a plurality of smaller chambers, one for each quench cabinet; each smaller chamber serving to isolate the quenching medium flow to the respective quench cabinet from the flow going to the other cabinets.
Claim 7
Dependent Claim
99 words
A melt spinning tower module as defined in claim 1 and wherein said circular spin block is horizontally positioned with respect to the upstanding central core and the plurality of spin packs are located at equal radial distances from the center of the spin block and spaced at equal interval distances around the block, said inlet means being centrally located at the top of the block; said module further including a plurality of conduits connected to the inlet means and to the respective spin packs for conducting the melted polymer directly from the inlet means to the spin packs.
Claim 8
Dependent Claim
47 words
A melt spinning tower module as defined in claim 6, said circular spin block further defining a chamber around the inlet means, the conduits and the spin packs for receiving a heated medium for maintaining the melted polymer received in the spin block at a predetermined temperature.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |