IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0999460
(2001-11-23)
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발명자
/ 주소 |
- Donovan, James A.
- Lamb, Patrick J.
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인용정보 |
피인용 횟수 :
6 인용 특허 :
4 |
초록
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Apparatus and method for forming sheets, comprising a pair of drums moving a belt to define a path for curing the sheets. Uncured material preferably polychloroprene, is put on the belt and squeezed between the drum and a roller to adjust the thickness of the layer. The drums rotate at a rate to per
Apparatus and method for forming sheets, comprising a pair of drums moving a belt to define a path for curing the sheets. Uncured material preferably polychloroprene, is put on the belt and squeezed between the drum and a roller to adjust the thickness of the layer. The drums rotate at a rate to permit the material to cure between the first and the second drum. Ovens cure the polychloroprene, which is removed at the second drum. The sheet has a thickness of from at least 0.004 inches to more than 0.25 inches. A plurality of sources supply material of at least two colors to form a sheet having stripes. Preferred sheets have an elongation to break of about 150% to about 1500%, a tensile strength of about 5 Mpa to about 50 Mpa and a modulus at 300% elongation of about 1 Mpa to about 10 Mpa.
대표청구항
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1. Apparatus for forming sheets from uncured non latex materials, comprising:a first drum having a first predetermined diameter and width, said diameter being at least five feet; a second drum having a second predetermined diameter and width, said diameter being at least one foot and smaller than sa
1. Apparatus for forming sheets from uncured non latex materials, comprising:a first drum having a first predetermined diameter and width, said diameter being at least five feet; a second drum having a second predetermined diameter and width, said diameter being at least one foot and smaller than said diameter of said first drum, said second drum being spaced from said first drum; a continuous belt supported by said first and second drum under tension and having a predetermined length of at least fifty feet in length; a drive source for driving said belt over said first and second drums at a predetermined rate of travel; a supply source of non latex material positioned to deposit said material in liquid form on said belt; a first roller positioned to squeeze said material to adjust the thickness of the layer of material on said belt; at least one oven positioned above the non latex material as it is carried by said belt, said drive source moving at said predetermined rate of travel over said predetermined length, said rate and length being sufficient to cure said material; and a product receiver for receiving a cured sheet from said belt. 2. The apparatus of claim 1, wherein said first roller produces a thickness of said material of from at least 0.004 inches to more than 0.25 inches.3. The apparatus of claim 1, wherein said first drum is at least six feet in diameter and said second drum is at least two feet in diameter, said belt having a length of at least one hundred fifty feet.4. The apparatus of claim 1, wherein said belt is under at least 1,000 pounds of tension.5. The apparatus of claim 4, wherein said belt is under at least 2,000 pounds of tension.6. The apparatus of claim 1, wherein said supply source comprises a plurality of separate sources of said liquid material on said belt spaced perpendicularly to the direction of travel of said belt.7. The apparatus of claim 6, wherein said plurality of separate sources supply said material in two locations to permit supply of said material in at least two colors.8. The apparatus of claim 7, wherein said locations are selected to cause said at least two colors to form a first predetermined pattern.9. The apparatus of claim 1, wherein said supply source is moveable in a direction perpendicular to the direction of travel of said belt to provide a second predetermined pattern.10. Apparatus for forming sheets from uncured non latex materials, comprising:first drum means for rotating a belt and having a first predetermined diameter and width, said diameter being at least five feet; second drum means for rotating a belt and having a second predetermined diameter and width, said diameter being at least one foot and smaller than said diameter of said first drum means, said second drum means being spaced from said first drum means; continuous belt means for carrying non latex material and supported by said first and second drum means under tension and having a predetermined length of at least fifty feet in length; drive means for driving said belt means over said first and second drum means at a predetermined rate of travel; supply means for supplying non latex material, said supply means being positioned to deposit said material in liquid form on said belt means; first roller means positioned to squeeze said material to adjust the thickness of the layer of material on said belt means; at least one oven means for curing said material, said oven means being positioned above the non latex material as it is carried by said belt means, said drive means being adapted to move at said predetermined rate of travel over said predetermined length, said rate and length being sufficient to cure said material; and product receiver means for receiving a cured sheet from said belt means. 11. The apparatus of claim 10, wherein said first roller means produces a thickness of said material of from at least 0.004 inches to more than 0.25 inches.12. The apparatus of claim 10, wherein said first drum means is at least six feet in diameter and said second drum means is at least two feet in diameter, said continuous belt means having a length of at least one hundred fifty feet.13. The apparatus of claim 10, wherein said belt means is under at least 1,000 pounds of tension.14. The apparatus of claim 13, wherein said belt means is under at least 2,000 pounds of tension.15. The apparatus of claim 10, wherein said supply means includes a plurality of separate source means for supplying said liquid material on said belt means spaced perpendicularly to the direction of travel of said belt means.16. The apparatus of claim 15, wherein said plurality of separate source means supply said material in two locations to permit supply of said material in at least two colors.17. The apparatus of claim 16, wherein said locations are selected to cause said at least two colors to form a first predetermined pattern.18. The apparatus of claim 15, wherein said supply source means is moveable in a direction perpendicular to the direction of travel of said belt means to provide a second predetermined pattern.
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