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公开(公告)号：MXPA02009445A
公开(公告)日：2004-05-17
申请号：MXPA02009445
申请日：2001-04-05
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： JANSSON JUHANI
IPC: D04H1/70 , D04H1/42 , D04H1/542 , D04H1/58 , D04H13/00 , D06M15/333 , D06M15/55 , D06M101/00 , D21H13/14 , D21H13/18 , D21H13/24 , D21H13/26 , D21H13/40 , D21H13/50 , D21H15/00 , D21H15/02 , D21H21/16
Abstract: Se produce una estera no tejida, util para una amplia variedad de propositos, que incluye formar productos de resina reforzados, en una manera que tengan diferentes usos especificos de, y ventajas sobre, las esteras convencionales de filamentos cortados y los tejidos de vidrio convencionales. La estera se fabrica preferiblemente por el proceso de espuma (pero puede fabricarse por el proceso de liquido) y a velocidades muy por encima de 60 metros / minutos y tiene una construccion sustancialmente uniforme aun cuando tenga baja densidad (por ejemplo de 100 g/m2 o menos). Al menos el 20% (preferiblemente al menos el 85% de las fibras estan en haces de fibras, de entre 5 y 450 fibras / haz. Las fibras (tipicamente al menos el 85%) tienen una longitud entre 5 y 100 mm, preferiblemente de 7 a 50 mm, son sustancialmente iguales en longitud como el haz de fibras donde ellas estan. Estas fibras se mantienen preferiblemente en los haces por un encolador sustancialmente no soluble en agua, tal como una resina epoxi o el PVOH. Las fibras en los haces tienen tipicamente diametros de aproximadamente 7 a 500 micras, preferiblemente alrededor de 7 a 35 micras. Los haces pueden comprender al menos el 10% de fibras de refuerzo, tal como fibras de vidrio, de aramida o de acrilico.
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公开(公告)号：AT263276T
公开(公告)日：2004-04-15
申请号：AT00907685
申请日：2000-02-24
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ROEKMAN KAY , JANSSON JUHANI
Abstract: A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a foam-fiber-surfactant slurry at the first end, and optionally a valved outlet at the second end. A center section of the manifold casing has a (e.g. rectangular) cross-section that becomes smaller moving from an inlet toward the outlet. First and second substantially closed side walls, a porous front wall having an effective length, and a back wall opposite the front wall, are provided for the center section, the walls planar or curved. Any suitable structures are provided for introducing a second (e.g. substantially fiber-free, or a fiber-foam slurry) foam into the center section through the back wall. Pressure sensors penetrating one or both of the side walls may sense the pressure within the center section, and automatically control the introduction of slurry into the inlet, withdrawal through the outlet, and/or introduction of the second foam into/through the back wall, so as to maintain the basis weight of the foam-fiber slurry passing through the front wall substantially constant along the effective length of the front wall.
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Patent Agency Ranking
公开(公告)号：ES2191864T3
公开(公告)日：2003-09-16
申请号：ES97947753
申请日：1997-12-18
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ELONEN JORMA , JANSSON JUHANI , KOSO ARTO , ROKMAN KAY
Abstract: A non-woven web of fibrous material is produced using a moving foraminous element in the practice of the foam process. A first foam slurry of air, water, fibers and a surfactant is generated and centrifugally pumped into contact with the moving foraminous element. Substantially fiber-free foam is withdrawn from the foraminous element while forming a non-woven web of fibrous material on the foraminous element, and at least a part of the substantially fiber-free foam is used in the generation of the first foam slurry. Recycling is also typically practiced using a centrifugal pump, and the centrifugal pumps are preferably degassing pumps which remove some of the gas from the foam. By practicing the invention it is possible to produce fibrous webs using the foam process that are more than two meters wide, and at a forming speed of more than about 100 m/min (e.g. about 200-500 m/min).
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公开(公告)号：CA2404820A1
公开(公告)日：2001-10-11
申请号：CA2404820
申请日：2001-04-05
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ROKMAN KAY , JANSSON JUHANI , KOSTAMO HARRI , BOHM JUHA
IPC: D04H1/70 , D04H1/42 , D04H1/542 , D04H1/58 , D04H13/00 , D06M15/333 , D06M15/55 , D06M101/00 , D21H13/14 , D21H13/18 , D21H13/24 , D21H13/26 , D21H13/40 , D21H13/50 , D21H15/00 , D21H15/02 , D21H21/16
Abstract: A non-woven mat useful for a wide variety of purposes, including forming reinforced resin products, is produced in a manner having different specific uses of, and advantages over, conventional chopped strand mats and conventional glass tissue. The mat is preferably made by the foam process (b ut may be made by the liquid process), and at speeds well in excess of 60 m./min., and has a substantially uniform construction even when low density (e.g. 100 g/m2 or less). At least 20 % (preferably at least 85 %) of the fibers are in fiber bundles with between 5-450 fibers/bundle. The fibers (typically at least 85 %) have a length between 5-100 mm, preferably 7-50 mm , substantially the same as the length of the fiber bundle they are in. The fibers are preferably held in the bundles by substantially non-water soluble sizing, such as epoxy resin or PVOH. The fibers in the bundles typically hav e diameters of approximately 7-500 microns, preferably about 7-35 microns. The bundles may comprise at least 10 % reinforcing fibers, such as glass, aramid or acrylic.
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公开(公告)号：NO20014122D0
公开(公告)日：2001-08-24
申请号：NO20014122
申请日：2001-08-24
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ROEKMAN KAY , JANSSON JUHANI
Abstract: A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a foam-fiber-surfactant slurry at the first end, and optionally a valved outlet at the second end. A center section of the manifold casing has a (e.g. rectangular) cross-section that becomes smaller moving from an inlet toward the outlet. First and second substantially closed side walls, a porous front wall having an effective length, and a back wall opposite the front wall, are provided for the center section, the walls planar or curved. Any suitable structures are provided for introducing a second (e.g. substantially fiber-free, or a fiber-foam slurry) foam into the center section through the back wall. Pressure sensors penetrating one or both of the side walls may sense the pressure within the center section, and automatically control the introduction of slurry into the inlet, withdrawal through the outlet, and/or introduction of the second foam into/through the back wall, so as to maintain the basis weight of the foam-fiber slurry passing through the front wall substantially constant along the effective length of the front wall.
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公开(公告)号：AU2918500A
公开(公告)日：2000-09-14
申请号：AU2918500
申请日：2000-02-24
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ROKMAN KAY , JANSSON JUHANI
Abstract: A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a foam-fiber-surfactant slurry at the first end, and optionally a valved outlet at the second end. A center section of the manifold casing has a (e.g. rectangular) cross-section that becomes smaller moving from an inlet toward the outlet. First and second substantially closed side walls, a porous front wall having an effective length, and a back wall opposite the front wall, are provided for the center section, the walls planar or curved. Any suitable structures are provided for introducing a second (e.g. substantially fiber-free, or a fiber-foam slurry) foam into the center section through the back wall. Pressure sensors penetrating one or both of the side walls may sense the pressure within the center section, and automatically control the introduction of slurry into the inlet, withdrawal through the outlet, and/or introduction of the second foam into/through the back wall, so as to maintain the basis weight of the foam-fiber slurry passing through the front wall substantially constant along the effective length of the front wall.
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公开(公告)号：FI973740A0
公开(公告)日：1997-09-22
申请号：FI973740
申请日：1997-09-22
Applicant: AHLSTROM GLASSFIBRE OY
Inventor： ROEKMAN KAY , JANSSON JUHANI
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