US3694119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot die for the production of multi-layer laminates
Assignee: SIAMP CEDAP SA
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Filing: 1969-02-11
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Granted: 1972-09-26
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Expires: 1989-02-11
Abstract
Abstract An extrusion nozzle with a discharge slot has a body with a central tongue separating two passages terminating at that slot, each passage consisting of an inner channel and an adjoining outer channel supplied with synthetic-resin material from respective distributing chambers to form a pair of superposed layers on each side of the tongue. The width of each layer is independently controllable by a pair of resiliently deflectable inner lips, remote from the discharge slot, and a pair of resiliently deflectable outer lips, proximal to that slot, whose distance from the tongue is adjustable by respective screws.
Inventors
- 👤 Robert Scheibling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/313; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/255; B29C48/2556; B29C48/307
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
A band-producing nozzle comprising a nozzle body formed with an elongated discharge slot; a tongue fixed to said body and reaching toward said slot while having a stationary surface extending along the entire width of said slot; a resiliently displaceable inner lip anchored to said body at a location remote from said slot and deflectable toward and away from said surface while defining an inner channel therewith communicating with said slot; a resiliently displaceable outer lip anchored to said body at a location proximal to said slot and resiliently deflectable relatively to said tongue to define with said surface an outer channel communicating with said inner channel and leading to said slot; a first distribution chamber formed in said body and communicating with said inner channel for supplying syntheticresin material thereto; a second distribution chamber formed in said body and communicating with said outer channel and independent from said first distribution chamber for supplying another synthetic -resin material to said outer channel for joint extrusion of said materials in respective layers from said slot; and respective adjusting means on said body for independent deflection of said lips to vary the widths of said channels.
Claim 2
Dependent Claim
194 words
A band-producing nozzle comprising a nozzle body formed with an elongated discharge slot; a tongue fixed to said body and reaching toward said slot while having a stationary surface extending along the entire width of said slot; a resiliently displaceable inner lip anchored to said body at a location remote from said slot and deflectable toward and away from said surface while defining an inner channel therewith communicating with said slot; a resiliently displaceable outer lip anchored to said body at a location proximal to said slot and resiliently deflectable relatively to said tongue to define with said surface an outer channel communicating with said inner channel and leading to said slot; a first distribution chamber formed in said body and communicating with said inner channel for supplying syntheticresin material thereto; a second distribution chamber formed in said body and communicating with said outer channel and independent from said first distribution chamber for supplying another synthetic -resin material to said outer channel for joint extrusion of said materials in respective layers from said slot; and respective adjusting means on said body for independent deflection of said lips to vary the widths of said channels.
Claim 3
Dependent Claim
70 words
The nozzle defined in claim 1 wherein at least one of said lips is formed unitarily on said body and is defined by an incision therein to render said one of said lips deflectable and said adjusting means includes at least one screw threaded into said body and bearing upon said one of said lips for bending same relative to the remainder of said body upon rotation of said screw.
Claim 4
Dependent Claim
66 words
The nozzle defined in claim 2 wherein the other of said lips has a stationary portion affixed to said body and is separated from said stationary portion by an incision, said adjusting means including a second screw threaded into said other of said lips and a nut bearing upon said stationary portion for deflection of said other of said lips upon rotation of said second screw.
Claim 5
Dependent Claim
62 words
The nozzle defined in claim 3 wherein said body extends on opposite sides of said tongue and is provided with pairs of inner and outer lips on opposite sides thereof defining respective sets of inner and outer channels on each side of said tongue with respective adjusting means therefor, said channels on both sides of said tongue merging together at said slot.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |