US Patent No: 6,861,025
Number of patents in Portfolio can not be more than 2000
Attenuating fluid manifold for meltblowing die
Stats
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Mar 1, 2005
Issued date -
Jun 20, 2002
filing date -
10/177,814
serial no -
In Force
status
Importance
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Abstract
Melt blown nonwoven webs are formed by supplying attenuating fluid to a meltblowing die through an attenuating fluid distribution passage whose distribution characteristics can be changed while the die and manifold are assembled. By adjusting the distribution characteristics of the passage, the mass flow rate of attenuating fluid to channels in the meltblowing die and the temperature of the attenuating fluid at the die outlets can be made more uniform.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,889,476 Melt blowing die and air manifold frame assembly for manufacture of carbon fibers | 39 | 1987 | |
| 4,818,463 Process for preparing non-woven webs | 92 | 1987 | |
| 5,098,636 Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric | 49 | 1990 | |
| 5,248,247 Apparatus for blow-extruding filaments for making a fleece | 16 | 1991 | |
| 5,632,938 Meltblowing die having presettable air-gap and set-back and method of use thereof | 14 | 1995 | |
| 5,580,581 Meltblowing die with replaceable preset die tip assembly | 22 | 1995 | |
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| 5,667,749 Method for the production of fibers and materials having enhanced characteristics | 13 | 1995 | |
| 5,711,970 Apparatus for the production of fibers and materials having enhanced characteristics | 29 | 1995 | |
| 5,807,795 Method for producing fibers and materials having enhanced characteristics | 11 | 1997 | |
| 6,001,303 Process of making fibers | 31 | 1997 | |
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| 6,057,256 Web of biocomponent blown fibers | 28 | 1987 | |
| 5,993,943 Oriented melt-blown fibers, processes for making such fibers and webs made from such fibers | 49 | 1992 | |
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| 5,891,482 Melt blowing apparatus for producing a layered filter media web product | 15 | 1996 | |
| 5,725,812 Melt blowing apparatus and method for forming a fibrous layered web of filter media including a fluid distribution arrangement | 13 | 1996 | |
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| 4,215,682 Melt-blown fibrous electrets | 300 | 1978 | |
| 4,988,560 Oriented melt-blown fibers, processes for making such fibers, and webs made from such fibers | 69 | 1987 | |
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| 5,236,641 Metering meltblowing system | 49 | 1991 | |
| 5,607,701 Tubular meltblowing die | 7 | 1995 | |
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| 5,080,569 Primary air system for a melt blown die apparatus | 32 | 1990 | |
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| 5,728,407 Die for melt-blowing apparatus | 13 | 1996 | |
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| 6,182,732 Apparatus for the manufacture of nonwoven webs and laminates including means to move the spinning assembly | 15 | 1998 | |
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| 5,582,907 Melt-blown fibrous web | 43 | 1994 | |
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| 5,260,003 Method and device for manufacturing ultrafine fibres from thermoplastic polymers | 56 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 1, 2016 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |