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WO2013044347A1 - Procédé de préparation d'un papier en fibre non ligneuse - Google Patents

Procédé de préparation d'un papier en fibre non ligneuse Download PDF

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Publication number
WO2013044347A1
WO2013044347A1 PCT/CA2011/050606 CA2011050606W WO2013044347A1 WO 2013044347 A1 WO2013044347 A1 WO 2013044347A1 CA 2011050606 W CA2011050606 W CA 2011050606W WO 2013044347 A1 WO2013044347 A1 WO 2013044347A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
chopped
flax
wheat
cooked
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CA2011/050606
Other languages
English (en)
Inventor
Jeff Golfman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prairie Pulp & Paper Inc
Original Assignee
Prairie Pulp & Paper Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prairie Pulp & Paper Inc filed Critical Prairie Pulp & Paper Inc
Priority to CN201180073868.9A priority Critical patent/CN103890265A/zh
Priority to EP11873520.8A priority patent/EP2761082A4/fr
Priority to PCT/CA2011/050606 priority patent/WO2013044347A1/fr
Publication of WO2013044347A1 publication Critical patent/WO2013044347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres

Definitions

  • Nonwood fiber has been used for the production of paper for thousands of years and is used as the main or exclusive source for paper in many countries.
  • a method of preparing photocopy paper, printing, laser graphic and many other paper types as well from a nonwood fiber source comprising: chopping a quantity of a dry nonwood fiber source to an average length between 1-100 mm or 3-75 mm or preferably 5-50 mm; wet processing the chopped material to remove dirt, fines and water-soluble extractives; dewatering the chopped material; heating the chopped material in the presence of 5-50% NaOH or 10-40% NaOH or preferably12-30% NaOH and 0-10% or 0-5% or preferably 0-2% anthraquinone for 10-240 minutes or 15-200 minutes or preferably 20-150 minutes to a temperature between 100-240°C or 120-200°C or preferably 140-180°C; washing the heated chopped materia!; bleaching the washed material; deflaking the bleached material; and forming the deflaked, bleached material into paper sheets.
  • the material may be cooled with water prior to washing and bleaching.
  • the nonwood fiber may be selected from the group consisting of flax, wheat and combinations thereof.
  • 100% wheat is used.
  • two fiber types are blended prior to deflaking.
  • the flax is whole flax straw.
  • a combination of flax and wheat is used. It is of note that suitable mixtures include 0.1 %-99.9% wheat and 0.1%-99.9% flax. In some embodiments, the mixture is 60-90% wheat and 10-40% flax or 70-90% wheat and 10-30% flax or 75-85% wheat and 15-25% flax. In some embodiments, the nonwood fiber is approximately 80% wheat and approximately 20% flax.95-100% Wheat straw and 0-5% decorticated flax straw
  • 80- 00% wheat and 0-20% flax may be used.
  • a method of preparing a paper product from a nonwood fiber source comprising: chopping a quantity of a dry nonwood fiber source to an average length between 1-100 mm; wet processing the chopped material to remove dirt, fines and water-soluble extractives; dewatering the chopped material; heating the chopped material in the presence of 5- 50% NaOH and 0-10% anthraquinone for 10-240 minutes to a temperature between 140-180°C; washing the heated chopped material; bleaching the washed materia!; deflaking the bleached material; and forming the deflaked material into a paper product.
  • the paper product may be selected from the group consisting of photocopy paper, toilet paper, tissue paper, paper towels, wrapping paper, box board, photo paper, colored paper, commercial printer-grade paper (for use in book and periodical printing and publishing), writing paper, stationery, sack paper and paper board as well as many other paper types known in the art.
  • the nonwood fiber may be selected from the group consisting of: flax, hemp, jute, kenaf, oats, corn, alfalfa, wheat, barley and perennial grasses as well as others known in the art.
  • the perennial grasses may be selected from the group consisting of reed canarygrass, wild rye, switchgrass, bamboo and fescue. Other suitable grasses will be readily apparent to one of skill in the art.
  • Suitable plants include but are by no means limited to flax, hemp, oats, wheat, barley, jute, kenaf, cotton, corn, alfalfa, millet, perennial grasses, perennial plants and combinations thereof.
  • the whole straw of the plant is used.
  • bast plants which are decorticated or separated by other means (for example, by wet, dry, mechanical or other such means) and only the bast fibers or outer bark is used in paper.
  • the bast is considered to be a long 'super-softwood' fiber while the core material is considered to be a weak hardwood-equivalent fiber.
  • paper comprised solely of a nonwood fiber mix can meet the technical physical specifications of commercially produced papers made from wood.
  • the main positive outcomes were the demonstration of producing aesthetically spectacular paper that met nearly every technical specification of commercially produced paper.
  • suitable plants are selected on the basis of a number of criteria, for example, cellulose content, hemicellulose content, lignin content, silica content, woody core content, fiber length and fiber width.
  • paper prepared according to the methods described herein may be used as photocopy paper, toilet paper, tissue paper, paper towels, wrapping paper, box board, photo paper, colored paper, printing paper, writing paper, stationery, sack paper, paper board and the like.
  • the bast content is proportional to the strength of the end product. Accordingly, for certain products, higher percentages of a high bast plant such as flax is more desirable.
  • the important properties include but are by no means limited to long fiber content for strength and stiffness, freeness for the rate of drainage of water and smoothness, brightness and opacity for printing surface quality.
  • a mixture of flax and wheat fiber is used to prepare photocopy paper.
  • suitable mixtures include 0.1 %- 99.9% wheat and 0.1 %-99.9% flax, depending on the desired final properties of the paper, as discussed herein.
  • the mixture is 60-90% wheat and 10-40% flax or other suitable nonwood fiber source or 70-90% wheat and 10-30% flax or other suitable nonwood fiber source or 75-85% wheat and 15-25% flax or other suitable nonwood fiber source.
  • the nonwood fiber is approximately 80% wheat and approximately 20% flax or other suitable nonwood fiber source.
  • the whole straw of the flax and the wheat is processed and in some embodiments the processed material is mixed together prior to deflaking.
  • the mixture is 60-100% wheat and 0-40% flax or other suitable nonwood fiber source; 70-100% wheat and 0-30% flax or other suitable nonwood fiber source; 80-100% wheat and 0-20% flax or other suitable nonwood fiber source; 60-99.9% flax and 0.1-40% flax or other suitable nonwood fiber source; 70-99.9% wheat and 0.1-30% flax or other suitable nonwood fiber source; and 80-99.9% wheat and 0.1-20% flax or other suitable nonwood fiber source.
  • the nonwood fiber source is wheat or is 100% wheat.
  • nonwood fiber for example, flax, hemp, oats, wheat, barley, jute, kenaf, cotton, corn, alfalfa, millet, perennial grasses, perennial plants and combinations thereof is chopped to a suitable average length.
  • the whole straw comprising both bast and core material is used.
  • the specific average length will depend on the specific nonwood fiber used. Specifically, the length is selected so that the appropriate fiber length is maintained during further processing, as discussed below. For example, bast crop fiber length is largely maintained during chemical pulping and should be less than approximately 6 mm during some applications such as sheet formation.
  • the nonwood fiber may be chopped to an average length between approximately 1-100 mm or between approximately 3- 75 mm or preferably between approximately 5-50 mm.
  • a suitable average length is approximately 0 mm, for example, 5-15 mm.
  • cereals for example, oats, corn, alfalfa, wheat, barley and the like and perennial grasses, for example, reed canarygrass, wild rye, switchgrass, bamboo, fescue and the like, in certain embodiments, a suitable average length is 10-50 mm. It is of note that longer fibers compromise sheet formation for example by clumping together in the sheet.
  • the fibers are preferably within the 1-6 mm range. It is of note that in some embodiments, depending on the intended use, the fibers may be 1-3 mm or may be 3-6 mm. It is of note that longer fibers (3-6 mm) lead to improvements in strength but may result in formation problems in certain applications but may be fine for other applications
  • the chopped material is then wet processed to further adjust particle size and to remove dirt, fines and water-soluble extractives prior to cooking.
  • the material is dewatered, for example, with a screw press.
  • the dewatering is carried out such that for example non-fibrous material, dirt and water-extractable components are removed.
  • the pulped material is then cooked to the desired kappa value depending on the intended use in the presence of sodium hydroxide (NaOH) and a cooking liquor.
  • NaOH sodium hydroxide
  • the desired kappa value may be between 0-30, 5-25 or less than approximately 20.
  • the pulped material may be cooked in a digester as discussed herein.
  • the cooking conditions are dependent upon the material selected. For example, cotton, which has high cellulose content and very low lignin content does not require much cooking or bleaching.
  • sodium hydroxide is added at approximately 5-50% or approximately 10-40% or preferably approximateiy12-30% of dry fiber weight and anthraquinone (AQ) is added at approximately 0-10% or approximately 0-5% or preferably 0-2% on a dry fiber basis.
  • the chopped material is cooked at a temperature between approximately 100-240°C or approximately 120-200°C or preferably approximately 140-180°C for approximately 10-240 minutes or approximately 15-200 minutes or preferably approximately 20-150 minutes or until the desired kappa number has been obtained.
  • the desired kappa number will depend on the intended use, that is, what type of paper product is being produced.
  • a desirable kappa number may be less than 40, less than 30 or preferably a kappa number of less than 20.
  • bast crops such as flax, hemp, jute, kenaf and the like are used.
  • the sodium hydroxide is added at 12-20% of dry fiber weight and anthraquinone (AQ) is added at 0-2% on a dry fiber basis.
  • the bast crop material is cooked at a temperature between 150-180°C for 20-150 minutes until the desired kappa number of 20 or less is obtained.
  • sodium hydroxide is added at 12-16% of dry fiber weight and AQ is added at 0-2% of dry fiber weight.
  • the mixture is cooked at 140-170°C for 20 to 20 minutes until the desired kappa number of 20 or less is obtained.
  • the sodium hydroxide and anthraquinone that is, the 'cooking liquor' may be heated, for example, to 80°C, if it is desired that the mixture reaches the cooking temperature more quickly.
  • heating the liquor to temperatures other than approximately 80°C, for example, approximately 60- 100°C or any temperature above ambient temperature will of course reduce the amount of time required to reach the cooking temperature, it is of note that in general the cooking liquor comprises NaOH and AQ but in some embodiments may include other additives known in the art, for example but by no means limited to, additives to protect the carbohydrates during defignification.
  • the cooked material is cooled with water, as discussed herein.
  • the cooked pulped material is then washed prior to being subjected to a bleaching process.
  • Black iiquor(spent liquor of pulping and washing process) separated from washed pulp is sent to chemical recovery unit to recover chemicals and energy.
  • any suitable method known in the art for bleaching may be used, for example, totally chlorine free (e.g. using hydrogen peroxide (H 2 O 2 )), oxygen, ozone or the like, elemental chlorine free (using chlorine dioxide, or CI0 2 ), chlorine, hypochlorite (CIO " ) , .
  • the pulp may be dewatered again and the bleaching consistency may be adjusted by adding dilution water.
  • the pH may be adjusted using either sulphuric acid or sodium hydroxide.
  • CI0 2 may be added while stirring the pulp. NaOH and H 2 0 2 are then added.
  • the bleached pulp is then deflaked by dispersing small fiber bundles present in the pulp blend. It is of note that if these small fiber bundles are not dispersed, clumps and knots will form in the pulp which will impact quality of the resulting paper product.
  • the deflaking may be accomplished by a variety of means known in the art, for example, by recirculating the bleached material through a double disk refiner. As will be appreciated by one of skill in the art, other suitable means of dispersing the fiber bundles may also be used and are within the scope of the invention.
  • the bleached material can now be utilized for the formation of suitable paper products, as discussed above, using means well known in the art.
  • the bleached material can be dewatered and further processed for use in papermaking or the production of paper sheets, as described herein.
  • the primary objective of this phase of the project was to demonstrate that paper could be made solely from whole flax and wheat fiber, and that the paper could meet the technical specifications of commercially available papers of similar grade.
  • Table 1 below identifies the targeted and tested values of the finished sheets.
  • Wheat and flax straw pulps were manufactured according to the Soda-AQ process. Specifically, 12-14% NaOH and 0.1 % AQ was added to oven-dried wheat straw at a liquor to solids ratio of 15:1. 22% NaOH and 0.1 % AQ was added to the flax straw at a liquonsolids ratio of 9:1. As discussed above, other percentages and ratios may be used within the invention.
  • the solids content was measured after a homogeneous sampling of the raw materials and wheat or flax straw was introduced into the digesters.
  • a wire basket was filled with these plants and introduced in the digester before cooking, in order to evaluate the pulp yield.
  • Cooking liquor was prepared in the liquor preparation tank in the conditions discussed herein. This cooking liquor was heated at 80°C before being introduced on wheat or flax straws. The heating of the cooking liquor allowed the digester contents to reach the cooking temperature in a shorter time. In this case, the time to the cooking temperature was approximately 30-60 minutes. It is of note that the cooking liquor does not necessarily need to be heated in ail embodiments, although doing so clearly reduces the time required to reach the cooking temperature. Accordingly, it is to be understood that heating the cooking liquor to any temperature above ambient will reduce the cooking time.
  • the wheat straw was heated to 160°C while the fiax straw was heated to 170°C. As discussed herein, other suitable temperatures may be used.
  • pulp contained in the drainage chest was transported to the bleaching chest.
  • the pulp stored in the bleaching chest was sent to the twin-wire press, and sulphuric acid and water were added to the pulp after the shredding screw.
  • the pulp was mixed with steam in single shaft mixer and was transferred to medium consistency pump to be sent to the reactor.
  • Chlorine dioxide (CIO2) was added on the pulp into the reactor in this example although as discussed above other suitable bleaching methods known in the art may be used instead and are within the scope of the invention.
  • a CIO 2 solution was prepared from the reaction of Cl 2 on NaCiO 2 , leading to CI0 2 and an NaCI solution.
  • the stirring speed was increased to 130 rpm in order to facilitate the mixing between the chemicals and the pulp inside the reactor. It is of note however that other suitable stirring speeds may be used, depending on factors such as the specific starting material and the end product. After the retention time had expired, the pulp was unloaded into a chest before starting the next stage.
  • the pulp contained in the chest was washed on the twin-wire press with an efficiency of about 95-97%.
  • NaOH and H2O 2 were introduced in the shredding screw with the corresponding water to reach the desired consistency.
  • pulp was released into a chest and mixed with water before being sent to a twin-wire press.
  • Pulp was washed on the twin-wire press and sulphuric acid was added on the pulp after the shredding screw to bring the pH down into the acidic range for subsequent bleaching with chlorine dioxide ⁇ CIO 2 ). Pulp was sent to the single shaft mixer, passed through the medium consistency pump and into the reactor. Chlorine dioxide was then introduced continuously at the feeding end of the reactor.
  • pulp was unloaded to a chest and the pulp was extracted from the pilot plant as pulp rolls at 33% consistency. It is of note that dewatered pulp of other suitable consistencies can be prepared according to the invention using means weli known to those of skill in the art.
  • the Chlorine dioxide caused a depolymerisation of the iignin mainly by attacking of the phenolic structures and olefinic. This chemical has an oxidizing action which leads to the opening of the aromatic ring, formation of quinones, oxiranes or structures of the aliphatic chains which would be oxidized.
  • the CIO 2 is used during delignification and during the bleaching.
  • the CIO 2 is reduced to chlorous and hypochiorous acid.
  • the hypochlorous acid can oxidize the Iignin to generate new free phenolic groups which are attacked by CIO 2 .
  • the dry/wet processing system appears to condition both the flax and wheat advantageously for subsequent cooking. This process allows lower chemical levels than unprocessed materials due to the removal of water-soluble compounds, and the "fluffing" of the material, allowing better access of the chemicals. The removal of the straw fines is advantageous, especially in increasing freeness.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un procédé de production de divers types de papier à partir d'une source de fibre non ligneuse telle qu'un mélange de lin et de blé. La source de fibres est découpée jusqu'à une longueur moyenne comprise entre 1 et 100 mm, traitée par voie humide, épaissie et chauffée en présence de NaOH et d'anthi aquinone avant d'être lavée, blanchie et formée pour obtenir des feuilles de papier. De la paille entière, comprenant à la fois l'écorce et le cœur, peut être utilisée pour la production de produits papetiers.
PCT/CA2011/050606 2011-09-28 2011-09-28 Procédé de préparation d'un papier en fibre non ligneuse Ceased WO2013044347A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201180073868.9A CN103890265A (zh) 2011-09-28 2011-09-28 一种用于制备非木质纤维纸的方法
EP11873520.8A EP2761082A4 (fr) 2011-09-28 2011-09-28 Procédé de préparation d'un papier en fibre non ligneuse
PCT/CA2011/050606 WO2013044347A1 (fr) 2011-09-28 2011-09-28 Procédé de préparation d'un papier en fibre non ligneuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2011/050606 WO2013044347A1 (fr) 2011-09-28 2011-09-28 Procédé de préparation d'un papier en fibre non ligneuse

Publications (1)

Publication Number Publication Date
WO2013044347A1 true WO2013044347A1 (fr) 2013-04-04

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Application Number Title Priority Date Filing Date
PCT/CA2011/050606 Ceased WO2013044347A1 (fr) 2011-09-28 2011-09-28 Procédé de préparation d'un papier en fibre non ligneuse

Country Status (3)

Country Link
EP (1) EP2761082A4 (fr)
CN (1) CN103890265A (fr)
WO (1) WO2013044347A1 (fr)

Cited By (7)

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US9915030B2 (en) 2014-03-19 2018-03-13 Cnh Industrial Canada, Ltd. Washing apparatus and method for preparation of cellulose fibers for use in manufacture of biocomposite materials
CN109024060A (zh) * 2018-07-10 2018-12-18 海盐县元通街道玖玖包装厂 一种瓦楞纸板的加工工艺
CN109930416A (zh) * 2019-03-20 2019-06-25 广州市帝东环保科技有限公司 一种植物纤维环保材料及其制备方法
WO2020007930A1 (fr) * 2018-07-03 2020-01-09 Swm Luxembourg Sarl Papier sulfurisé comprenant des fibres libériennes et produits cosmétiques fabriqués à partir de celui-ci
US12098507B2 (en) 2020-11-06 2024-09-24 Kimberly-Clark Worldwide, Inc. High porosity non-wood pulp
US12146262B2 (en) 2020-11-06 2024-11-19 Kimberly-Clark Worldwide, Inc. Non-wood pulp having high brightness and low debris
US12215464B2 (en) 2020-11-06 2025-02-04 Kimberly-Clark Worldwide, Inc. Dispersible non-wood pulp

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CN107090737B (zh) * 2017-03-24 2019-07-19 中信格义循环经济有限公司 一种非木材类本色浆食品包装纸及其制备方法
CN110512464A (zh) * 2019-08-05 2019-11-29 牡丹江恒丰纸业股份有限公司 一种抑菌护妆纸的生产方法
UY38825A (es) * 2019-08-08 2021-02-26 Feltwood Ecomateriales S L Método para la producción de artículos sólidos moldeados fabricados de materiales vegetales no de madera

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US9915030B2 (en) 2014-03-19 2018-03-13 Cnh Industrial Canada, Ltd. Washing apparatus and method for preparation of cellulose fibers for use in manufacture of biocomposite materials
WO2020007930A1 (fr) * 2018-07-03 2020-01-09 Swm Luxembourg Sarl Papier sulfurisé comprenant des fibres libériennes et produits cosmétiques fabriqués à partir de celui-ci
FR3083550A1 (fr) * 2018-07-03 2020-01-10 Swm Luxembourg Sarl Papier vegetal comprenant des fibres liberiennes
CN112384658A (zh) * 2018-07-03 2021-02-19 斯瓦蒙卢森堡有限责任公司 包含韧皮纤维的植物纸和由其制成的化妆品
AU2019297042B2 (en) * 2018-07-03 2022-07-21 Swm Luxembourg Sarl Vegetable paper comprising bast fibres and cosmetic products made thereof
US11806410B2 (en) 2018-07-03 2023-11-07 Mativ Holdings, Inc. Vegetable paper comprising bast fibres and cosmetic products made thereof
CN109024060A (zh) * 2018-07-10 2018-12-18 海盐县元通街道玖玖包装厂 一种瓦楞纸板的加工工艺
CN109930416A (zh) * 2019-03-20 2019-06-25 广州市帝东环保科技有限公司 一种植物纤维环保材料及其制备方法
US12098507B2 (en) 2020-11-06 2024-09-24 Kimberly-Clark Worldwide, Inc. High porosity non-wood pulp
US12146262B2 (en) 2020-11-06 2024-11-19 Kimberly-Clark Worldwide, Inc. Non-wood pulp having high brightness and low debris
US12215464B2 (en) 2020-11-06 2025-02-04 Kimberly-Clark Worldwide, Inc. Dispersible non-wood pulp
US12227900B2 (en) 2020-11-06 2025-02-18 Kimberly-Clark Worldwide, Inc. High brightness non-wood pulp

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EP2761082A4 (fr) 2015-06-24
EP2761082A1 (fr) 2014-08-06

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