公开(公告)号：US20190234020A1

公开(公告)日：2019-08-01

申请号：US16312449

申请日：2017-06-20

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H15/10 ,  D21H17/68 ,  D21H17/24 ,  D21H21/06 ,  D21H19/22 ,  D21H19/82 ,  D21F1/10 ,  D21G1/00 ,  D21H27/10 ,  B32B27/32 ,  B32B27/10

CPC classification number: D21H15/10 ,  B32B27/10 ,  B32B27/32 ,  B32B29/00 ,  B32B2250/02 ,  B32B2262/062 ,  B32B2307/7244 ,  B32B2439/40 ,  B65D65/38 ,  B65D81/34 ,  D21F1/10 ,  D21G1/00 ,  D21H11/18 ,  D21H17/24 ,  D21H17/68 ,  D21H19/22 ,  D21H19/824 ,  D21H21/06 ,  D21H27/10 ,  D21H27/38

Abstract: The invention concerns a method of producing an MFC film comprising reinforcement fibers, which film show excellent oxygen barrier properties and is easy to handle. The method of manufacturing the film comprises the steps of: —providing a suspension comprising a first microfibrillated cellulose (MFC) in an amount of at least 50 weight %, reinforcement fibers in an amount of at least 5 weight %, all percentages calculated on the total solid content of said suspension, and a formation aid, —mixing said suspension to form a mixture, —forming a fibrous web from the mixture, and —dewatering and/or drying said fibrous web to form a film having a basis weight of less than 40 g/m2, a specific formation number of below 0.45 g0.5/m2, and an Oxygen Transmission Rate (OTR) value of below 100 ml/m2/per 24 hours, preferably of below 50 ml/m2 per 24 hours at 50% relative humidity. The invention further discloses a film and use of the film in food or liquid packaging applications.

公开(公告)号：US20190047273A1

公开(公告)日：2019-02-14

申请号：US16087281

申请日：2017-03-21

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Seppo Lampainen ,  Jukka Kankkunen

IPC: B32B29/08 ,  D21H11/18 ,  D21H17/16 ,  D21H17/17 ,  D21H17/25 ,  D21H21/16 ,  D21H21/18 ,  D21H27/10 ,  D21H27/38 ,  D21H27/40

Abstract: A corrugated fiberboard comprising cellulosic fibers, wherein said corrugated fiberboard has at least one of a geometrical tensile index in the range of from 32 to 65 Nm/g, a fracture toughness index in the range of from 4 to 24 Jm/kg, and a ring crush index in the range of from 5 to 10 Nm/g5 measured at relative humidity of 85% RH; wherein the cellulosic fibers comprises a mixture of less refined fibers having a Schopper-Riegler (SR) value in the range of 15 to 28 and microfibrillated cellulose fibers, wherein mixture comprises said microfibrillated cellulose in a range of from 1% to 5% by weight of the dry content of the cellulosic fibers.

公开(公告)号：US20180346813A1

公开(公告)日：2018-12-06

申请号：US15779131

申请日：2016-11-25

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk ,  Elina Skerfe ,  Isto Heiskanen

IPC: C09K17/52 ,  C09K17/50 ,  A01G13/02

CPC classification number: A01G13/02 ,  C09K17/52 ,  D21H19/38 ,  D21H27/00

Abstract: The invention relates to a ground cover in the form of a mulch, comprising a paper substrate originating from fibre-bearing pulp, preferably emanating from lignocellulosic material, which has been web-formed or sheet-formed. Paper based mulches face problems with biodegradability and microbial attacks, mechanical strength and cost. The solution according to the invention is that the fibres have been coated with one or more minerals, e.g., calcium carbonate, and the mulch comprises one or more functional agents, e.g., a colorant. Further, the mineral coated onto or into the fibres predominantly show up when precipitated in the form of one or more metal carbonates.

公开(公告)号：US20180245289A1

公开(公告)日：2018-08-30

申请号：US15758963

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Saukkonen

IPC: D21H21/16 ,  D21H11/18 ,  D21H17/26 ,  D21H17/57

CPC classification number: D21H21/16 ,  D21H11/18 ,  D21H17/26 ,  D21H17/57 ,  D21H19/10 ,  D21H19/36

Abstract: A method for manufacturing a film, wherein said film has a basis weight of less than 50 g/m2 and wherein the density of the film is higher than 750 kg/m2 comprising the steps of: providing a suspension comprising microfiber Hated cellulose (MFC); forming a web of said suspension on a porous wire, microfibrillated cellulose (MFC); surface sizing said web, wherein the web, at the beginning of the surface sizing step, has a moisture content in the rage from 10 to 50 wt-%; drying said surface sized web to a final moisture content of between 0.1-20 wt-% to form said film.

公开(公告)号：US20180245287A1

公开(公告)日：2018-08-30

申请号：US15754870

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk

IPC: D21H11/18 ,  D21H21/10 ,  D21H17/32 ,  D21H17/37 ,  B32B27/10

CPC classification number: D21H11/18 ,  B32B27/10 ,  B32B2250/02 ,  B32B2323/043 ,  B32B2323/046 ,  D21H17/22 ,  D21H17/24 ,  D21H17/28 ,  D21H17/31 ,  D21H17/32 ,  D21H17/375 ,  D21H21/10

Abstract: A method for the production of a film from a fibrous web, wherein the method comprises the steps of: providing a fibrous suspension comprising a microfibrillated cellulose, wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content, adding an amphoteric polymer to said suspension to provide a mixture of said microfibrillated cellulose and said amphoteric polymer, providing said mixture to a substrate to form a fibrous web, wherein the amount of amphoteric polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content; and dewatering said fibrous web to form a film having a basis weight of less than 40 g/m2 and a density in the range of from 700 to 1000 kg/m3

公开(公告)号：US20180237990A1

公开(公告)日：2018-08-23

申请号：US15755407

申请日：2016-08-23

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Henri Kastinen ,  Lars Axrup ,  Saija Pollanen ,  Jani Korhonen ,  Petri Suhonen ,  Teemu Tiainen ,  Matti Vakevainen

IPC: D21D1/20 ,  D21H11/18 ,  D21C9/00

CPC classification number: D21D1/20 ,  D21C9/007 ,  D21H11/18

Abstract: Method for producing microfibrillated cellulose(MFC), wherein the method comprising the steps of: Pre-treating of chemical pulp, such that, the pulp reaches a Schopper-Riegler (SR) value above 50, and refining the pulp, at a consistency of 3-6%, in a refiner with refiner blades, wherein the height of the refiner blades is in the range 2-3 mm.

公开(公告)号：US09663901B2

公开(公告)日：2017-05-30

申请号：US14396634

申请日：2013-04-25

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Karita Kinnunen ,  Tuomo Hjelt

IPC: D21H27/30 ,  D21H21/16 ,  D21H11/02 ,  D21H17/22 ,  D21H11/18 ,  D21H21/24 ,  D21H21/56 ,  D21H17/17 ,  D21F11/00

CPC classification number: D21H27/30 ,  D21F11/002 ,  D21H11/02 ,  D21H11/18 ,  D21H17/17 ,  D21H17/22 ,  D21H21/16 ,  D21H21/24 ,  D21H21/56

Abstract: A hydrophobically sized fibrous web layer, preparation of a fibrous web or a fiber-based coating, a multilayer board product having at least a middle layer formed of said fibrous web, as well as use of a heat-sensitive surfactant for said methods and products, whereby microfibrillated cellulose (MFC) and hydrophobic size are brought to a foam with water and the heat-sensitive surfactant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to a web product. Alternatively the foam may be supplied onto a premade fibrous web and dried to form a coating layer. The hydrophilic functionality of the surfactant contained in the web may be destroyed by heating. Pulp of a greater fiber length, such as CTMP, may be included, to provide improved wet and dry tensile strength for the paper and board products.

公开(公告)号：US20170107669A1

公开(公告)日：2017-04-20

申请号：US15389482

申请日：2016-12-23

Applicant: Stora Enso Oyj

Inventor： Lars Axrup ,  Heidi Saxell ,  Veikko Jokela ,  Henri Kastinen ,  Anna Kauppi ,  Kaj Backfolk ,  Nina Ruohoniemi ,  Risto Laitinen ,  Isto Heiskanen ,  Teija Laukala

IPC: D21H17/67 ,  C08B15/02 ,  D21H17/24 ,  D21H11/18 ,  D21H17/64

CPC classification number: D21H17/675 ,  C08B15/02 ,  C08K3/26 ,  C08K2003/265 ,  C08L2205/16 ,  D21H11/18 ,  D21H17/24 ,  D21H17/64 ,  D21H17/67 ,  C08L1/04

Abstract: A substantially dry composite material comprising a nanofibrillated polysaccharide and two or more additives, wherein the composite nanofibrillated polysaccharide is a microfibrillated cellulose and wherein the additives are lime milk and carbon dioxide, wherein the additives are allowed to react with each other and forming a precipitated calcium carbonate on the nanofibrillated polysaccharide, thereby forming a composite product comprising precipitated calcium carbonate and nanofibrillated polysaccharide.

公开(公告)号：US20150315748A1

公开(公告)日：2015-11-05

申请号：US14441257

申请日：2013-11-06

Applicant: Stora Enso Oyj ,  Wetend Technologies Ltd

Inventor： Olavi Imppola ,  Jouni Matula ,  Jussi Matula ,  Karri Tahkola ,  Matti Väkeväinen ,  Isto Heiskanen ,  Jari Räsänen

IPC: D21H17/67

CPC classification number: D21H17/675 ,  D21H11/18 ,  D21H17/25 ,  D21H17/67 ,  D21H17/70

Abstract: A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.

Abstract translation: 一种用于由层状基材材料制成的纸和纸板的层，其中所述帘布层包含以所述帘布层的1-25重量％的量的混合材料，其中所述混合材料被引入所述短循环的目标悬浮液 在线方法中，所述目标悬浮液形成层状基底材料，并且所述混合材料包含沉淀在纳米纤维化多糖的纤维或原纤维上的碱土金属碳酸盐。

公开(公告)号：US20150096700A1

公开(公告)日：2015-04-09

申请号：US14396634

申请日：2013-04-25

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Karita Kinnunen ,  Tuomo Hjelt

IPC: D21H27/30 ,  D21H21/16 ,  D21H11/02 ,  D21H17/22

CPC classification number: D21H27/30 ,  D21F11/002 ,  D21H11/02 ,  D21H11/18 ,  D21H17/17 ,  D21H17/22 ,  D21H21/16 ,  D21H21/24 ,  D21H21/56

Abstract: A hydrophobically sized fibrous web layer, preparation of a fibrous web or a fibre-based coating, a multiplayer board product having at least a middle layer formed of said fibrous web, as well as use of a heat-sensitive surfactant for said methods and products, whereby microfibrillated cellulose (MFC) and hydrophobic size are brought to a foam with water and the heat-sensitive surfactant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to a web product. Alternatively the foam may be supplied onto a premade fibrous web and dried to form a coating layer. The hydrophilic functionality of the surfactant contained in the web may be destroyed by heating. Pulp of a greater fibre length, such as CTMP, may be included, to provide improved wet and dry tensile strength for the paper and board products.

Abstract translation: 疏水尺寸的纤维网层，纤维网或纤维基涂层的制备，至少由所述纤维网形成的中间层的多层板产品以及用于所述方法和产品的热敏表面活性剂 ，由此将微纤化纤维素（MFC）和疏水性尺寸用水和热敏表面活性剂引入泡沫中，将泡沫供应到纸或纸机的成形织物，通过成形织物的空气抽吸脱水，以及 干燥成网状产品。 或者，泡沫可以供应到预制纤维网上并干燥以形成涂层。 包含在纤维网中的表面活性剂的亲水官能度可能被加热破坏。 可以包括更大纤维长度的纸浆，例如CTMP，以为纸和纸制品提供改善的湿和干拉伸强度。