US4336012A
Expired / Lapsed
US
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Coextrusion device
Assignee: Standard Oil Co
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Filing: 1980-10-20
•
Granted: 1982-06-22
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Expires: 2000-10-20
Abstract
Abstract The coextrusion device (20) of the present invention can be used with conventional extruders (24-26) and extrusion dies (90) for forming layered products (91) from at least two materials. It includes a manifold (21) for receiving a plurality of extruded feed materials (A, B, C) and a feedblock (22) receiving the feed materials from the manifold. The feedblock includes first and second faces (43, 52), entrance ports (40, 41, 42) in the first face corresponding to the number of feed materials, channel means (50, 60, 70) passing through the feedblock between the first and second faces directing each feed material into at least one separate profile, and exit ports (51, 61, 71) in the second face corresponding to the number of channel means, defining a first profile for each feed material. An adaptor (23) is provided for receiving the first profiles from the feedblock and includes first and second faces (82, 85), an entrance port (83) in the first face receiving said first profiles, an exit port (84) in the second face corresponding to the entrance of the extrusion die and, a transition zone (86) between the entrance and exit ports wherein the first profiles become contiguous and the overall configuration of the contiguous first profiles is adapted for receipt by the extrusion die. The device can further include a reverser plate (110) and alternate feedblocks (130) having different exit ports (139, 140, 152, 153).
Inventors
- 👤 Paul E. Koch
- 👤 Thomas J. Bond
- 👤 Richard C. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:23
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/16; B29C48/03; B29C48/07; B29C48/08; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/307; B29C48/36; B29C48/49; B29C48/495; B29C48/22
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
221 words
A coextrusion device, for use with conventional extruders and extrusion dies for forming layered products from at least two materials, comprising: manifold means for receiving a plurality of extruded feed materials wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said flow streams of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each separate flow stream and directing each flow stream into at least one separate profile; exit ports in said second face corresponding to the number of said channel means, defining a first profile for each said flow stream of feed material; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of an extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by an extrusion die.
Claim 2
Dependent Claim
221 words
A coextrusion device, for use with conventional extruders and extrusion dies for forming layered products from at least two materials, comprising: manifold means for receiving a plurality of extruded feed materials wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said flow streams of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each separate flow stream and directing each flow stream into at least one separate profile; exit ports in said second face corresponding to the number of said channel means, defining a first profile for each said flow stream of feed material; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of an extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by an extrusion die.
Claim 3
Dependent Claim
64 words
A coextrusion device, as set forth in claim 1, said manifold having a first exit port and said feedblock having a first entrance port for passage of a first feed material in a first flow stream; and said manifold having a second exit port and said feedblock having a second entrance port for passage of a second feed material in a second flow stream.
Claim 4
Dependent Claim
117 words
A coextrusion device, as set forth in claim 2, said device further comprising: reverser plate means interposed between said manifold and said feedblock said reverser plate means having at least first and second entrance ports for said first and second feed material flow streams from said mainfold; at least first and second exit ports for said first and second feed material flow streams to pass into said first and second entrance ports of said feedblock; and at least a first channel directing said first feed material flow stream to said second entrance port of said feedblock; and at least a second channel direction said second feed material flow stream to said first entrance port of said feedblock.
Claim 5
Dependent Claim
37 words
A coextrusion device, as set forth in claim 1, wherein said exit ports extend to the surface of said feedblock rear face maintaining said flow streams of feed materials passing therethrough distinct and separate from adjacent layers.
Claim 6
Dependent Claim
37 words
A coextrusion device, as set forth in claim 1, wherein said channel means includes a preland communicating with said entrance port; and a land communicating with said exit port and receiving said feed material from said preland.
Claim 7
Dependent Claim
41 words
A coextrusion device, as set forth in claim 5, wherein walls forming said preland are streamlined and configured to reduce the cross-sectional area of said flow stream of feed material therin to that of said exit port carried by said feedblock.
Claim 8
Dependent Claim
39 words
A coextrusion device, as set forth in claim 6, wherein walls forming said land are streamlined and configured to alter the configuration of said flow stream of feed material to that of said exit port carried by said feedblock.
Claim 9
Dependent Claim
242 words
A coextrusion device, for use with conventional extruders and extrusion dies for forming layered products from as least two different materials, comprising: manifold means for receiving a plurality of extruded feed materials wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said plurality of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each said flow stream and directing each flow streams into at least one separate profile; fin means provided in at least one of said channels dividing at least one said separate profile into two; and exit ports in said second face corresponding to the number of said separate profiles from said channel means, defining a first profile for each said separate profile; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of an extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by an extrusion die.
Claim 10
Dependent Claim
242 words
A coextrusion device, for use with conventional extruders and extrusion dies for forming layered products from as least two different materials, comprising: manifold means for receiving a plurality of extruded feed materials wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said plurality of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each said flow stream and directing each flow streams into at least one separate profile; fin means provided in at least one of said channels dividing at least one said separate profile into two; and exit ports in said second face corresponding to the number of said separate profiles from said channel means, defining a first profile for each said separate profile; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of an extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by an extrusion die.
Claim 11
Dependent Claim
37 words
A coextrusion device, as set forth in claim 8, wherein said exit ports extend to the surface of said feedblock rear face maintaining said flow streams of feed materials passing therethrough distinct and separate from adjacent layers.
Claim 12
Dependent Claim
64 words
A coextrusion device, as set forth in claim 8, said manifold having a first exit port and said feedblock having a first entrance port for passage of a first feed material in a first flow stream; and said manifold having a second exit port and said feedblock having a second entrance port for passage of a second feed material in a second flow stream.
Claim 13
Dependent Claim
110 words
A coextrusion device, as set forth in claim 10, said device further comprising: reverser plate means interposed between said manifold and said feedblock; said reverser plate means having at least first and second entrance ports for said first and second feed material flow streams from said manifold; at least first and second exit ports for said first and second feed material flow streams to pass into said feedblock; and at least a first channel directing said first feed material flow stream to said second entrance port of said feedblock; and at least a second channel directing said second feed material flow stream to said first entrance port of said feedblock.
Claim 14
Dependent Claim
37 words
A coextrusion device, as set forth in claim 8, wherein said channel means includes a preland communicating with said entrance port; and a land communicating with said exit port and receiving said feed material from said preland.
Claim 15
Dependent Claim
41 words
A coextrusion device, as set forth in claim 12, wherein wall forming said preland are streamlined and configured to reduce the cross-sectional area of said flow stream of feed material therein to that of said exit port carried by said feedblock.
Claim 16
Dependent Claim
39 words
A coextrusion device, as set forth in claim 13, wherein walls forming said land are streamlined and configured to alter the configuration of said flow stream of feed material to that of said exit port carried by said feedblock.
Claim 17
Dependent Claim
17 words
A coextrusion device, as set forth in claim 14, said fin means being provided in said land.
Claim 18
Independent Claim
225 words
An apparatus for forming layered products from at least two different materials, comprising in combination: a plurality of extruders providing feed materials; an extrusion die; manifold means for receiving said feed materials from said extruders wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said flow streams of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each separate flow stream and directing each flow stream into at least one separate profile; exit ports in said second face corresponding to the number of said channel means, defining a first profile for each said flow stream of feed material; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of said extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by said extrusion die.
Claim 19
Independent Claim
225 words
An apparatus for forming layered products from at least two different materials, comprising in combination: a plurality of extruders providing feed materials; an extrusion die; manifold means for receiving said feed materials from said extruders wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said flow streams of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock between said first and second faces reducing the cross-sectional area of each separate flow stream and directing each flow stream into at least one separate profile; exit ports in said second face corresponding to the number of said channel means, defining a first profile for each said flow stream of feed material; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of said extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by said extrusion die.
Claim 20
Dependent Claim
36 words
An apparatus, as set forth in claim 16, wherein said exit ports extend to the surface of said feedblock rear face maintaining said flow streams of feed materials passing therethrough distinct and separate from adjacent layers.
Claim 21
Dependent Claim
63 words
An apparatus, as set forth in claim 16, said manifold having a first exit port and said feedblock having a first entrance port for passage of a first feed material in a first flow stream; and said manifold having a second exit port and said feedblock having a second entrance port for passage of a second feed material in a second flow stream.
Claim 22
Dependent Claim
109 words
An apparatus, as set forth in claim 18, said system further comprising: reverser plate means interposed between said manifold and said feedblock; said reverser plate means having at least first and second entrance ports for said first and second feed material flow streams from said manifold; at least first and second exit ports for said first and second feed material flow streams to pass into said feedblock; and at least a first channel directing said first feed material flow stream to said second entrance port of said feedblock; and at least a second channel directing said second feed material flow stream to said first entrance port of said feedblock.
Claim 23
Dependent Claim
36 words
An apparatus, as set forth in claim 16, wherein said channel means includes a preland communicating with said entrance port; and a land communicating with said exit port and receiving said feed material from said preland.
Claim 24
Dependent Claim
40 words
An apparatus, as set forth in claim 20, wherein walls forming said preland are streamlined and configured to reduce the cross-sectional area of said flow stream of feed material therein to that of said exit port carried by said feedblock.
Claim 25
Dependent Claim
38 words
An apparatus, as set forth in claim 21, wherein walls forming said land are streamlined and configured to alter the configuration of said flow stream of feed material to that of said exit port carried by said feedblock.
Claim 26
Independent Claim
246 words
An apparatus for forming layered products from at least two different materials, comprising in combination: a plurality of extruders providing feed materials; an extrusion die; manifold means for receiving said feed materials from said extruders wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said plurality of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock reducing the cross-sectional area of each said flow stream and between said first and second faces directing said flow streams into at least one separate profile; fin means provided in at least one of said channels dividing at least one of said separate profiles into two; and exit ports in said second face corresponding to the number of said separate profiles from said channel means, defining a first profile for each said separate profile; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of the extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by said extrusion die.
Claim 27
Independent Claim
246 words
An apparatus for forming layered products from at least two different materials, comprising in combination: a plurality of extruders providing feed materials; an extrusion die; manifold means for receiving said feed materials from said extruders wherein individual feed materials are directed into separate flow streams passing therethrough; feedblock means receiving said plurality of feed materials from said manifold and maintaining each separate while passing therethrough; said feedblock having first and second faces; entrance ports in said first face corresponding to the number of said flow streams of feed materials; channel means passing through said feedblock reducing the cross-sectional area of each said flow stream and between said first and second faces directing said flow streams into at least one separate profile; fin means provided in at least one of said channels dividing at least one of said separate profiles into two; and exit ports in said second face corresponding to the number of said separate profiles from said channel means, defining a first profile for each said separate profile; and adaptor means receiving said first profiles from said feedblock said adaptor means having first and second faces; an entrance port in said first face receiving said first profiles; an exit port in said second face corresponding to the entrance of the extrusion die; and a transition zone between said entrance and exit ports wherein said first profiles become contiguous and the overall configuration of said contiguous first profiles is adapted for receipt by said extrusion die.
Claim 28
Dependent Claim
16 words
An apparatus, as set forth in claim 23, said fin means being provided in said land.
Claim 29
Dependent Claim
36 words
An apparatus, as set forth in claim 23, wherein said exit ports extend to the surface of said feedblock rear face maintaining said flow streams of feed materials passing therethrough distinct and separate from adjacent layers.
Claim 30
Dependent Claim
63 words
An apparatus, as set forth in claim 23, said manifold having a first exit port and said feedblock having a first entrance port for passage of a first feed material in a first flow stream; and said manifold having a second exit port and said feedblock having a second entrance port for passage of a second feed material in a second flow stream.
Claim 31
Dependent Claim
109 words
An apparatus, as set forth in claim 26, said system further comprising: reverser plate means interposed between said manifold and said feedblock; said reverser plate means having at least first and second entrance ports for said first and second feed material flow streams from said manifold; at least first and second exit ports for said first and second feed material flow streams to pass into said feedblock; and at least a first channel directing said first feed material flow stream to said second entrance port of said feedblock; and at least a second channel directing said second feed material flow stream to said first entrance port of said feedblock.
Claim 32
Dependent Claim
36 words
An apparatus, as set forth in claim 23, wherein said channel means includes a preland communicating with said entrance port; and a land communicating with said exit port and receiving said feed material from said preland.
Claim 33
Dependent Claim
40 words
An apparatus, as set forth in claim 28, wherein walls forming said preland are streamlined and configured to reduce the cross-sectional area of said flow stream of feed material therein to that of said exit port carried by said feedblock.
Claim 34
Dependent Claim
38 words
An apparatus, as set forth in claim 29, wherein walls forming said land are streamlined and configured to alter the configuration of said flow stream of feed material to that of said exit port carried by said feedblock.
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |