Rolling mill air permeability film and the manufacturing process and the equipment of air permeability film
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Sep 2, 2004
app pub date -
Mar 15, 2004
filing date -
Apr 30, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
Disclosed is an air permeable film united with a nonwoven fabric, consisting of a polymer film having an inorganic material extruded to have a basic weight of 35 g/m.sup.2 or less and united to a partial or whole surface of a nonwoven fabric. The nonwoven fabric having a basic weight of 50 g/m.sup.2 or less is united to one surface of the extruded polymer film in a melted state, with an air permeable region centering around a drawn mark distributed to the whole surface of a nonwoven fabric-united film rolled and drawn by a press roll. A method of preparing such an air permeable film united with a nonwoven fabric and a device for preparing the same are also described.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| KR | B1 | KR100439459 | Apr 30, 2001 |
| WO | A1 | WO2002087856 | Apr 20, 2002 |
International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- B28B:SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG O....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- B22D:CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY ....
- D04H:MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAME....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
- 2004 Application Filing Year
- D01D Class
- 66 Applications Filed
- 43 Patents Issued To-Date
- 65.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D01D Class
- 0 % this patent is cited more than
- 21 Age