公开(公告)号：US6444088B2

公开(公告)日：2002-09-03

申请号：US77962801

申请日：2001-02-09

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： ROEKMAN KAY ,  JANSSON JUHANI

IPC: D21F1/00 ,  D21F11/00 ,  D21F1/02

CPC classification number: D21F11/002

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.

Abstract translation: 通过使用特定结构的歧管的泡沫工艺制造纤维材料的非织造纤维网。 歧管具有壳体，其具有第一和第二相对端，其包括在第一端处用于泡沫 - 纤维 - 表面活性剂浆料的入口，以及任选地在第二端处的带阀的出口。 歧管壳体的中心部分具有从入口朝向出口移动的较小的（例如矩形）横截面。 第一和第二基本封闭的侧壁，具有有效长度的多孔前壁和与前壁相对的后壁设置用于中心部分，壁面平坦或弯曲。 提供任何合适的结构，用于通过后壁将第二（例如基本上不含纤维的纤维泡沫浆料）泡沫引入中心部分。 穿过一个或两个侧壁的压力传感器可以感测中心部分内的压力，并且自动控制浆料引入入口，通过出口抽出和/或将第二泡沫引入/穿过后壁， 以便沿着前壁的有效长度保持通过前壁的泡沫纤维浆料的基重基本上恒定。

公开(公告)号：WO0175204A3

公开(公告)日：2002-06-20

申请号：PCT/FI0100331

申请日：2001-04-05

Applicant: AHLSTROM GLASSFIBRE OY ,  ROEKMAN KAY ,  JANSSON JUHANI ,  KOSTAMO HARRI ,  BOHM JUHA

Inventor： ROEKMAN KAY ,  JANSSON JUHANI ,  KOSTAMO HARRI ,  BOHM JUHA

IPC: D06M15/333 ,  D04H1/58 ,  D04H13/00 ,  D06M15/55 ,  D06M101/00 ,  D21H13/14 ,  D21H13/18 ,  D21H13/24 ,  D21H13/26 ,  D21H13/40 ,  D21H13/50 ,  D21H15/00 ,  D21H15/02 ,  D21H21/16 ,  D04H1/70

CPC classification number: D21H13/40 ,  D04H1/593 ,  D04H1/64 ,  D04H1/72 ,  D04H1/732 ,  D21H13/14 ,  D21H13/18 ,  D21H13/24 ,  D21H13/26 ,  D21H13/50 ,  D21H15/02 ,  D21H21/16 ,  Y10T442/2402 ,  Y10T442/30 ,  Y10T442/60 ,  Y10T442/614 ,  Y10T442/619

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 (but 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/m 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 have 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.

Abstract translation: 用于各种目的的无纺布垫，包括形成增强树脂产品，以与常规短切纤维毡和常规玻璃纸组织不同的特定用途和优点的方式生产。 垫优选通过泡沫方法制造（但可以通过液体方法制成），并且速度优于60m /分钟，并且即使当低密度（例如100g / m 2）时也具有基本均匀的结构 <2>以下）。 至少20％（优选至少85％）的纤维是纤维束，其中5-450纤维/束。 纤维（通常为至少85％）的长度为5-100mm，优选为7-50mm，基本上与其所处的纤维束的长度相同。纤维优选通过基本上不变的纤维束保持在束中， 水溶性上浆，如环氧树脂或PVOH。 束中的纤维通常具有约7-500微米的直径，优选约7-35微米。 束可以包括至少10％的增强纤维，例如玻璃，芳族聚酰胺或丙烯酸。

公开(公告)号：ES2223137T3

公开(公告)日：2005-02-16

申请号：ES98942705

申请日：1998-09-03

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： JANSSON JUHANI ,  ROKMAN KAY

IPC: D21F1/02 ,  D21F1/08 ,  D21F11/00

Abstract: Aparato para obtener una banda continua no tejida de material fibroso, comprendiendo: - un elemento foraminoso móvil (90) en el que puede formarse - una banda continua no tejida; - una caja de cabeza (30I) adyacente a dicho elemento foraminoso (90) de modo que una mezcla de fibra de espuma, en dicha caja de cabeza (30I) deposite fibras sobre dicho elemento foraminoso (90) comprendiendo dicha caja de cabeza (30I) un techo (93); - medios (29) para introducir una mezcla de fibra/espuma en la caja de cabeza (30I) y - medios (31, 32) para retirar espuma a través de dicho elemento foraminoso (90) para formar una banda continua fibrosa no tejida sobre dicho elemento foraminoso (90); caracterizado porque en la zona de dicha caja de cabeza (30I), dicho elemento foraminoso (90) forma un fondo de la caja de cabeza (30I) dispuesta opuesta a dicho techo (93) y converge hacia el techo (93) en la dirección de movimiento del elemento foraminoso (90) y dicho aparato comprende, además, medios para pasar unaespuma prácticamente libre de fibra al interior de dicha caja de cabeza (30I) en contacto con la superficie del techo en una posición alejada desde dicho elemento foraminoso (90) de tal forma que dicha espuma prácticamente libre de fibra fluya a lo largo de dicha superficie de techo hacia el elemento foraminoso.

公开(公告)号：DE60107223D1

公开(公告)日：2004-12-23

申请号：DE60107223

申请日：2001-04-05

Applicant: AHLSTROM GLASSFIBRE OY KARHULA

Inventor： ROEKMAN 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 (but 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 have 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.

公开(公告)号：FI112392B

公开(公告)日：2003-11-28

申请号：FI965110

申请日：1996-12-19

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： ELONEN JORMA ,  JANSSON JUHANI ,  KOSO ARTO ,  ROEKMAN KAY

IPC: B01D19/00 ,  D21F11/00

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).

公开(公告)号：DE69719380T2

公开(公告)日：2003-10-23

申请号：DE69719380

申请日：1997-12-18

Applicant: AHLSTROM GLASSFIBRE OY KARHULA

Inventor： ELONEN JORMA ,  JANSSON JUHANI ,  KOSO ARTO ,  ROEKMAN KAY

IPC: D04H1/70 ,  B01D19/00 ,  D21F11/00

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).

公开(公告)号：AU5230201A

公开(公告)日：2001-10-15

申请号：AU5230201

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 (but 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 have 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.

公开(公告)号：CA2362191A1

公开(公告)日：2000-08-31

申请号：CA2362191

申请日：2000-02-24

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： JANSSON JUHANI ,  ROKMAN KAY

IPC: D21F1/00 ,  D21F11/00

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 slur ry 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 fo r 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 th e 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.

公开(公告)号：CA2301955C

公开(公告)日：2006-12-12

申请号：CA2301955

申请日：1998-09-03

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： JANSSON JUHANI ,  ROKMAN KAY

IPC: D21F1/02 ,  D21F11/00 ,  D21F1/08

Abstract: In a foam laid process for producing a non-woven web of fibrous material (su ch as of synthetic or cellulose fibers) substantially fiber free foam is introduced at various locations in or adjacent to a headb ox to get improved results. By introducing pure foam into the foam/fiber mixture near (e.g. just before) where the foam/fibre mixture is introduced into the headbox a more uniform basis weight profile of the non-woven web produced may be provided (e.g. a basis weight variation of about 0,5 % or less). By introducing another stream of substantially fiber-free foam into the headbox at a surface remote from t he foraminous element, to flow along the surface (typically parallel to the flow of the foam/fiber mixture), it is possible to minimize shear of fibers in the headbox so that the fibers do not become unidirectional, in the direction of movement of the foraminous element, and keep the surface clean. The surface is typically a roof surface of an inclined headbox.

公开(公告)号：CA2362191C

公开(公告)日：2006-07-11

申请号：CA2362191

申请日：2000-02-24

Applicant: AHLSTROM GLASSFIBRE OY

Inventor： ROKMAN KAY ,  JANSSON JUHANI

IPC: D21F11/00 ,  D21F1/00

Abstract: A method and a manifold for making nonwoven webs of fibrous material wi th increased uniformity of the basis weight profile. The manifold had a decreasing cross section, a front porous wall to allow passage of foam-fiber slurry, and a suitable structure for introducing a second foam and allowing the basis weight profile variation of less than 0.5% of the foam-fiber slurry passing through the front wall.