公开(公告)号：US20240360627A1

公开(公告)日：2024-10-31

申请号：US18566269

申请日：2022-05-31

申请人： RENGO CO., LTD.

发明人： Aya KINUGAWA ,  Kengo NOZAKI

IPC分类号： D21H21/34 ,  D21H19/12 ,  D21H19/82 ,  D21H27/40

CPC分类号： D21H21/34 ,  D21H19/12 ,  D21H19/824 ,  D21H19/828 ,  D21H27/40

摘要： Provided are a flame-proof linerboard and a flame-proof corrugated paperboard in which with a small coating amount, a flame-proof layer is formed on the surface of a general linerboard so as to reduce penetration of the flame-proofing agent, and which are thus low in cost and exhibit high flame-proof performance. A flame-proof corrugated paperboard (21) is produced which includes, as a linerboard (15), a flame-proof paper including a paper layer (11), a flame-proof layer (12) containing a flame-proofing agent and a polymer having a molecular weight of 8,000 or more and 10,000,000 or less, and an overcoat layer (13) for protecting the flame-proof layer (12), the overcoat layer (13) being disposed closer to the surface of the corrugated paperboard than the flame-proof layer (12) is.

公开(公告)号：US11999132B2

公开(公告)日：2024-06-04

申请号：US16500033

申请日：2018-03-28

申请人： Stora Enso OYJ

发明人： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen ,  Ville Ribu ,  Kimmo Nevalainen

IPC分类号： B32B15/085 ,  B32B15/20 ,  B32B27/10 ,  B65D65/40 ,  B65D65/42 ,  C08J5/18 ,  D21H11/18 ,  D21H19/04 ,  D21H19/08 ,  D21H19/22 ,  D21H19/82 ,  D21H19/84 ,  D21H27/10

CPC分类号： B32B15/085 ,  B32B15/20 ,  B32B27/10 ,  B65D65/40 ,  B65D65/42 ,  C08J5/18 ,  D21H11/18 ,  D21H19/04 ,  D21H19/08 ,  D21H19/22 ,  D21H19/824 ,  D21H19/84 ,  D21H27/10 ,  B32B2307/7244 ,  B32B2439/70 ,  C08J2323/06

摘要： The present invention is directed to a packaging material comprising a layer of microfibrillated cellulose (MFC) and an aluminum layer having a thickness of 0.1-20 μm, wherein the layer comprising MFC and/or the aluminum layer has been laminated or extrusion coated on at least one side with a thermoplastic polymer and wherein the amount of aluminum is sufficient to make the packaging material heat sealable by induction. The MFC layer contains at least 60% by weight of microfibrillated cellulose.

公开(公告)号：US20240167225A1

公开(公告)日：2024-05-23

申请号：US18514535

申请日：2023-11-20

申请人： FIBERLEAN TECHNOLOGIES LIMITED

发明人： Thomas REEVE-LARSON ,  Mark PARADIS ,  Jonathan PHIPPS ,  Per SVENDING ,  Daniel INGLE ,  David SKUSE

IPC分类号： D21H19/34 ,  D21H19/30 ,  D21H19/82

CPC分类号： D21H19/34 ,  D21H19/30 ,  D21H19/824

摘要： Methods of sequentially applying nanocellulose(s) onto the surface of paper and paperboard substrates, paper or paperboard prepared using said methods, and systems for producing paper or paperboard having sequentially applied nanocellulose(s).

公开(公告)号：US11827397B2

公开(公告)日：2023-11-28

申请号：US17350424

申请日：2021-06-17

申请人： Pactiv Evergreen Inc.

发明人： Geoffrey Nobes ,  Ernest Pasteur

IPC分类号： B65B3/02 ,  B65B3/04 ,  B65B9/06 ,  B65B61/06 ,  B65B51/26 ,  D21H19/30 ,  D21H19/82 ,  D21H27/10 ,  D21H19/22 ,  B65D75/58

CPC分类号： B65B3/02 ,  B65B3/04 ,  B65B9/06 ,  B65B51/26 ,  B65B61/06 ,  D21H19/22 ,  D21H19/30 ,  D21H19/824 ,  D21H27/10 ,  B65D75/5805 ,  B65D75/5883

摘要： An improved paperboard pouch comprising a multilayer substrate and a method of making the same is provided. The multilayer paperboard pouch comprises an outer surface and an inner surface, wherein one of the surfaces is defined as a food contact surface. In the depicted embodiment, the properties of the polymer layer are chosen to provide adequate mechanical and barrier protection to the paper-based pouch formed on the conventional pouch-forming equipment. A method of manufacturing a multilayer paperboard pouch using conventional bag-making equipment (“CBME”) running at normal production speed for making standard plastic pouches is also provided. First, a paper is extrusion-coated and then the CBME is configured with a feeder for feeding an extrusion-coated paper intermittently for a length along a feeding path; a cutter disposed at a position predetermined for cutting one of the layers of the coated paper and forming a first side gusset, a second side gusset and a bottom gusset portions and for folding each of a first side gusset, a second side gusset and a bottom gusset portions into halves along a center line extending longitudinally thereof; and a sealer for sealing the layers of the polymer with the layers of the bottom gusset portion and the layers of the first and second gusset portions, respectively to form the finished multilayer paperboard pouch ready for sale and distribution to various retailers. It is to be noted that in the depicted embodiment various closure constructions and mechanism can be used for heat sealing the finished pouches.

公开(公告)号：US20230212825A1

公开(公告)日：2023-07-06

申请号：US17999060

申请日：2021-05-18

申请人： Stora Enso OYJ

发明人： Chris Bonnerup ,  Magnus Ekberg ,  Kaj Backfolk

IPC分类号： D21H27/10 ,  D21H19/82 ,  D21H19/22 ,  D21H19/12 ,  D21H23/64 ,  D21H23/50 ,  D21H23/72 ,  B32B27/10 ,  B32B27/32 ,  B32B37/24 ,  B32B38/00 ,  B65D65/40 ,  B65D65/42

CPC分类号： D21H27/10 ,  D21H19/824 ,  D21H19/22 ,  D21H19/12 ,  D21H23/64 ,  D21H23/50 ,  D21H23/72 ,  B32B27/10 ,  B32B27/32 ,  B32B37/24 ,  B32B38/164 ,  B65D65/40 ,  B65D65/42 ,  B32B2307/7265 ,  B32B2255/12 ,  B32B2307/718 ,  B32B2307/31 ,  B32B2307/7246 ,  B32B2307/7244 ,  B32B2255/26 ,  B32B2250/40 ,  B32B2037/243 ,  B32B2317/12 ,  B32B2439/70

摘要： The invention discloses a paperboard for packaging of a heat-sealable packaging material comprising: —a paperboard substrate comprising a first and a second side, —a first and an optional second dispersion coating layer on the first side, which first and optional second dispersion coating layer provides a barrier against at least one of liquid, moisture, grease and gas, —an extrusion coated barrier layer comprising a polyolefin, wherein the first and optional second dispersion coating layer is applied between the paperboard substrate and the extrusion coated barrier layer, and wherein the coat weight of the extrusion coated barrier layer is less than 15 gsm. The packaging material according of the invention minimizes the amount of plastic coating, but still provides the needed barrier properties for the packaging of food and/or liquid. The packaging material has especially been shown to provide a longer shelf life for food items packed in a packaging made from the material. Especially, the packaging material provides gas-, liquid and/or grease barrier properties. Although the packaging material comprises such low amount of extruded thermoplastic polymers, the material is readily heat-sealable.

公开(公告)号：US20180155876A1

公开(公告)日：2018-06-07

申请号：US15882410

申请日：2018-01-29

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： MIKHAIL R. LEVIT ,  DARIUSZ WLODZIMIERZ KAWKA

IPC分类号： D21H19/84 ,  D21H19/82 ,  D21H19/30 ,  D21H19/24 ,  B32B3/12 ,  D21H23/70 ,  D21H19/12 ,  D21H13/26 ,  B32B27/10

CPC分类号： D21H19/84 ,  B32B3/12 ,  B32B27/10 ,  B32B2250/40 ,  B32B2255/12 ,  B32B2262/0269 ,  D21H13/26 ,  D21H19/12 ,  D21H19/24 ,  D21H19/30 ,  D21H19/824 ,  D21H23/70

摘要： A method of making a fiber-reinforced composite structure comprising the steps of (i) forming a paper sheet having a Gurley air resistance at least 200 seconds per 100 milliliters, the sheet comprising from 30 to 70 weight percent p-aramid fiber, (ii) depositing on both surfaces of the paper sheet a compression enhancing layer in a quantity up to 5 weight percent based on the weight of the paper, (iii) forming a honeycomb from the sheet of step (ii), and (iv) applying a matrix resin coating to the honeycomb of step (iii).

公开(公告)号：US09976258B2

公开(公告)日：2018-05-22

申请号：US14818456

申请日：2015-08-05

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： Mikhail R Levit ,  Dariusz Wlodzimierz Kawka

IPC分类号： B32B3/12 ,  D21H19/84 ,  B32B27/10 ,  D21H13/26 ,  D21H19/12 ,  D21H23/70 ,  D21H19/24 ,  D21H19/30 ,  D21H19/82

CPC分类号： D21H19/84 ,  B32B3/12 ,  B32B27/10 ,  B32B2250/40 ,  B32B2255/12 ,  B32B2262/0269 ,  D21H13/26 ,  D21H19/12 ,  D21H19/24 ,  D21H19/30 ,  D21H19/824 ,  D21H23/70

摘要： A method of making a fiber-reinforced composite structure comprises the steps of (i) forming a paper sheet having a Gurley air resistance at least 200 seconds per 100 milliliters, the sheet comprising from 30 to 70 weight percent p-aramid fiber, (ii) depositing on both surfaces of the paper sheet a compression enhancing layer in a quantity up to 5 weight percent based on the weight of the paper, (iii) forming a honeycomb from the sheet of step (ii), and (iv) applying a matrix resin coating to the honeycomb of step (iii).

公开(公告)号：US09944425B2

公开(公告)日：2018-04-17

申请号：US14350616

申请日：2012-10-09

申请人： STORA ENSO OYJ

发明人： Jari Räsänen ,  Isto Heiskanen ,  Risto Laitinen

IPC分类号： B65D1/26 ,  B32B1/02 ,  B65D1/44 ,  B65D1/22 ,  B32B29/00 ,  B32B29/08 ,  B32B23/06 ,  B32B29/06 ,  D21H27/10 ,  D21H17/14 ,  D21H17/17 ,  D21H17/55 ,  D21H17/56 ,  D21H17/66 ,  D21H17/00 ,  D21H19/82 ,  D21H19/84 ,  D21H21/16 ,  D21H21/20 ,  B65D1/28 ,  D21H17/15 ,  D21H19/76 ,  D21H17/62 ,  D21H19/22 ,  D21H19/28

CPC分类号： B65D1/265 ,  B32B1/02 ,  B32B23/06 ,  B32B29/00 ,  B32B29/002 ,  B32B29/06 ,  B32B29/08 ,  B65D1/22 ,  B65D1/26 ,  B65D1/28 ,  B65D1/44 ,  D21H17/14 ,  D21H17/15 ,  D21H17/17 ,  D21H17/55 ,  D21H17/56 ,  D21H17/62 ,  D21H17/66 ,  D21H17/74 ,  D21H19/22 ,  D21H19/28 ,  D21H19/76 ,  D21H19/824 ,  D21H19/84 ,  D21H21/16 ,  D21H21/20 ,  D21H27/10 ,  Y10T428/1303 ,  Y10T428/277 ,  Y10T428/31783 ,  Y10T428/31786 ,  Y10T428/3179 ,  Y10T428/31895 ,  Y10T428/31902 ,  Y10T428/31993

摘要： The invention relates to a packaging board comprising a fibrous base and one or more polymer coating layers on one or both sides of the fibrous base. According to the invention the fibrous base contains the combination of an alkyl ketene dimer size, stearic acid anhydride, a wet-strength size and an aluminium compound, which give the board resistance to aggressive liquids as well as thermal treatment, particularly an improved resistance to raw edge penetration in such circumstances. The invention further relates to containers and packages made of the board, for instance disposable drinking cups, dairy product cartons and auto-clave packages, as well as use of the board for such purposes.

公开(公告)号：US20150274367A1

公开(公告)日：2015-10-01

申请号：US14438139

申请日：2013-10-28

申请人： STORA ENSO OYJ

发明人： Kimmo Nevalainen ,  Ville Ribu

IPC分类号： B65D25/14 ,  A47G19/22 ,  B65D5/62 ,  B65D1/34 ,  B32B27/10 ,  B32B27/36

CPC分类号： D21H5/0005 ,  A47G19/2205 ,  B05D1/265 ,  B05D7/58 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/18 ,  B32B27/308 ,  B32B27/36 ,  B32B37/153 ,  B32B2270/00 ,  B32B2307/7163 ,  B32B2317/12 ,  B32B2439/00 ,  B32B2439/02 ,  B32B2439/60 ,  B32B2439/62 ,  B32B2439/66 ,  B32B2439/70 ,  B32B2553/00 ,  B65D1/34 ,  B65D5/62 ,  B65D25/14 ,  B65D65/466 ,  D21H19/20 ,  D21H19/28 ,  D21H19/82 ,  D21H19/824 ,  D21H27/10 ,  Y02A40/961 ,  Y02W90/12 ,  Y02W90/13 ,  Y10T428/3179

摘要： A biodegradable packaging material, a method of manufacturing the same, as well as products made of the material wherein the manufacture comprises extrusion onto a fibrous substrate one or more polymer coating layers including at least one layer of a polymer blend consisting of (i) 20-95 wt-% of polylactide having a high melt index of more than 35 g/10 min (210° C.; 2.16 kg), (ii) 5-80 wt-% of polybutylene succinate (PBS) or a biodegradable derivate thereof, and (iii) 0-5 wt-% of one or more polymeric additives. The components of the blend are melted and blended in connection with the extrusion step. The goal is to improve extrudability, increase machine speed in extrusion and maintaining good adhesiveness to the substrate and good heat-sealability of the coating. The products include disposable drinking cups and board trays, as well as sealed carton packages for solids and liquids.

摘要翻译： 一种可生物降解的包装材料，其制造方法以及由该材料制成的产品，其中该制造方法包括在纤维基材上挤出一个或多个聚合物涂层，所述聚合物涂层包括至少一层由（i）20 -95重量％的熔体指数高于35克/ 10分钟的聚丙交酯（210℃; 2.16千克），（ii）5-80重量％的聚丁二酸丁二醇酯（PBS）或其可生物降解的衍生物 ，和（iii）0-5重量％的一种或多种聚合物添加剂。 将共混物的组分熔融并与挤出步骤相结合。 目的是提高挤出性，提高挤出机的速度，并保持与基材的良好粘合性和涂层的良好的热封性。 产品包括一次性饮用杯子和纸盘，以及用于固体和液体的密封纸箱包装。

公开(公告)号：US08382947B2

公开(公告)日：2013-02-26

申请号：US13162714

申请日：2011-06-17

申请人： Benny J Skaggs ,  Matt Bovee

发明人： Benny J Skaggs ,  Matt Bovee

IPC分类号： D21H11/00

CPC分类号： D21H23/50 ,  B32B9/06 ,  D21H19/12 ,  D21H19/824 ,  D21H21/30 ,  Y10T428/31975 ,  Y10T428/31982 ,  Y10T428/31993

摘要： The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface of a sized paperboard substrate to form a treated paperboard substrate. The treated paperboard substrate includes a layer of OBA on at least one surface of the paper or paperboard substrate in which the brightness of the treated paper or paperboard substrate is greater than the sized paper or paperboard substrate before treating thereof.