WO2023080960A1 - Conception de gobelet à base de fibres, chimie et outillage - Google Patents

Conception de gobelet à base de fibres, chimie et outillage Download PDF

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Publication number
WO2023080960A1
WO2023080960A1 PCT/US2022/043516 US2022043516W WO2023080960A1 WO 2023080960 A1 WO2023080960 A1 WO 2023080960A1 US 2022043516 W US2022043516 W US 2022043516W WO 2023080960 A1 WO2023080960 A1 WO 2023080960A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
additive
dry pulp
slurry
pulp weight
Prior art date
Application number
PCT/US2022/043516
Other languages
English (en)
Inventor
Yoke Dou Chung
Yiyun Zhang
Chee Lee
Original Assignee
Footprint International, LLC
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 Footprint International, LLC filed Critical Footprint International, LLC
Priority to EP22890587.3A priority Critical patent/EP4426617A1/fr
Priority to CA3237192A priority patent/CA3237192A1/fr
Priority to CN202280087225.8A priority patent/CN118475515A/zh
Priority to AU2022382632A priority patent/AU2022382632A1/en
Priority to MX2024005353A priority patent/MX2024005353A/es
Publication of WO2023080960A1 publication Critical patent/WO2023080960A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A47G19/2205—Drinking glasses or vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/265—Drinking cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • 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
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/17—Ketenes, e.g. ketene dimers
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Definitions

  • the present invention relates, generally, to the manufacture of plastic-free, fiberbased products and, more particularly, to designs, chemistry, and tooling for fiber-based cups.
  • Fiber-based packaging products are biodegradable, compostable and, unlike plastics, do not migrate into the ocean.
  • Type 1 molded pulp manufacturing also known as “dry” manufacturing, uses a fiber slurry made from ground newsprint, kraft paper or other fibers dissolved in water. A mold mounted on a platen is dipped or submerged in the slurry and a vacuum is applied to the generally convex backside. The vacuum pulls the slurry onto the mold to form the shape of the package. While still under the vacuum, the mold is removed from the slurry tank, allowing the water to drain from the pulp. Air is then blown through the tool to eject the molded fiber piece. The part is typically deposited on a conveyor within a drying oven.
  • Type 2 molded pulp manufacturing also known as “wet” manufacturing, is typically used for packaging electronic equipment, cellular phones and household items with containers having particular wall dimensions.
  • Type 2 molded pulp uses the same material and follows the same basic process as Type 1 manufacturing up the point where the vacuum pulls the slurry onto the mold. After this step, a transfer mold mates with the fiber package, moves the formed “wet part” to a hot press, and compresses and dries the fiber material to increase density and provide a smooth external surface finish.
  • a fiber-based, plastic-free drinking cup is formed by providing a fiber-based slurry comprising a hydrophobic additive and a strength additive, then forming a drinking cup component by compressing and drying the fiber-based slurry in a form press assembly having an internal shape characterized by a conic frustum (i.e., a cup-shaped form).
  • the fiber-based slurry may include a dry pulp mixture of virgin fiber and recycled fiber, the hydrophobic additive is 1.0 - 10.0% of the dry pulp weight, and the strength additive is 1.0 - 10.0% of the dry pulp weight.
  • the fiber-based slurry may include about 50% bleached hardwood, about 50% bleached softwood, about 2.5% strength additive, and about 3.5% hydrophobic additive by dry pulp weight.
  • the molding method might employ a thermoform wet press, a dry press, or any other paper-making method.
  • FIG. 1 includes isometric overviews of the components of a cup forming assembly in accordance with one embodiment
  • FIG. 2 is a top view of the cold press of FIG. 1;
  • FIG. 3 is a side view of the cold press of FIG. 2;
  • FIG. 4 is a top view of the form die of FIG. 1;
  • FIG. 5 is a side view of the form die of FIG. 4
  • FIGS. 6 and 7 are top and cross-sectional views, respectively, of the forming assembly with the cold press and form die interacting with each other during forming;
  • FIG. 8 includes isometric overviews of a hotpress assembly in accordance with one embodiment
  • FIG. 9 is a top view of the lower hotpress mold of FIG. 8;
  • FIG. 10 is a side view of the lower hotpress mold of FIG. 9;
  • FIG. 11 is a top view of the upper hotpress mold of FIG. 8;
  • FIG. 12 is a side view of the upper hotpress mold of FIG. 11;
  • FIGS. 13 and 14 are top and cross-section views of the upper and lower hotpress cup molds interacting with each other during molding;
  • FIGS. 15, 16, and 17 are cross-sectional, bottom, and isometric views of a cup manufacturing using one or more of the mold assemblies of the previous figures.
  • the present invention relates to systems and methods for fiber-based drinking cups (for both hot and cold applications), including details of tooling, manufacturer, and fiber/additive composition.
  • the following detailed description of the invention is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
  • FIGS. 1-7 depict a cold press cup assembly in accordance with various embodiments
  • FIGS. 8-14 depict a hotpress cup assembly in accordance with various embodiments
  • FIGS. 15-17 illustrate an exemplary cup made using any of the molds and methods illustrated in the preceding figures. While the figures show example dimensions that may be applicable in one or more embodiments, the present invention is not limited to particular dimensions, and the figure are not necessarily drawn to scale.
  • FIG. 1 includes isometric overviews of the components of a cup forming assembly (i.e., a cold press) in accordance with one embodiment, including: (a) a form die 100 and (b) a corresponding cold form 101. That is, a portion 121 of cold form 101 extends from the base of cold press 101 and has a generally conic frustum (cup-like) shape with associated cup lugs. Portion 121 is configured to be received by an opening 120 in form die 100, as is known in the art with respect to form press assemblies.
  • FIG. 2 is a top view of the cold press of FIG. 1
  • FIG. 3 is a side view of the cold press of FIG. 2
  • FIG. 4 is a top view of the form die of FIG. 1
  • FIG. 5 is a side view of the form die of FIG. 4.
  • FIGS. 6 and 7 are top- and cross-sectional views (600 and 700), respectively, of the forming assembly of FIG. 1 with the cold form 101 and form die 100 interacting with each other (e.g., compression of the components) during formation of the drinking cup. That is, as illustrated, during the forming process (with fiber-based material present) the cold press is inserted with a predetermined force/displacement such that it seats within the form die as shown. A slurry (described in further detail below) is provided between cold form 101 and form die 100 prior to compression, and fluid (primarily water) is removed through the bottom vents at the bottom of the cup shape.
  • fluid primarily water
  • Fiber material collects on a wire screen 701 provided within form die 100 (e.g., a 0.65 mm thick wire screen), and when cold press 101 and form die 100 are subsequently separated, the fiber based cup is suitably removed from the wire screen 701.
  • a lug depth of about 1.5-2.5 mm (e.g. ,1.95 mm) distance between cold press 101 and form die 100 is provided in region 702, and a lug height of about 3.0-4.0 mm (e.g., 3.57 mm) distance between cold press 101 and form die 100 is provided in region 703.
  • FIG. 8 includes isometric overviews of a hot press assembly in accordance with one embodiment, including lower and upper hotpress molds 801 and 800, respectively.
  • a portion 821 of top mold 801 extends from its base and has a generally conic frustum (cup-like) shape with associated cup lugs. Portion 821 is configured to be received by an opening 820 in bottom mold 800.
  • FIG. 9 is a top view of the lower hotpress mold of FIG. 8
  • FIG. 10 is a side view of the lower hotpress mold of FIG. 9
  • FIG. 11 is a top view of the upper hotpress mold of FIG. 8
  • FIG. 12 is a side view of the upper hotpress mold of FIG. 11.
  • FIGS. 13 and 14 are top- (1300) and cross-section (1400) views of the upper and lower hotpress cup molds of FIG. 8 interacting with each other during molding. That is, the upper and lower hotpress mold components are brought together with a predetermined force/displacement (with fiber-based material/slurry present) to form the drinking cup shape desired. Also shown in FIGS. 13-14 are heating rod mounting outlet 1304, heating rod mounting outlet 1303, pilot holes 1407, heating rod 1402, lug 1401, vacuum and blowoff holes 1406, and heating rod 1405. Furthermore, FIGS. 15, 16, and 17 are cross- sectional, bottom, and isometric views of a cup manufacturing using one or more of the mold assemblies of the previous figures.
  • Drinking cups of the present invention may be fabricated using a variety of fiber compositions and chemistries.
  • a water barrier and strength additive to the cellulosic/hemicellulosic fiber
  • hydrophobic and strength properties can be added to the material.
  • the fiber material itself may be virgin, recycled, or a combination of each.
  • the formulation may be used in a wet press (thermoform), a dry press (traditional), or any other paper-making process.
  • the fiber blend includes 0-100% virgin fiber and the balance recycled fiber, and the internal chemistry (weight percentage of dry pulp) of 0-10% strength additive (e.g., starch), and 0-10% alkyl ketene dimer (AKD).
  • 0-10% strength additive e.g., starch
  • alkyl ketene dimer e.g., alkyl ketene dimer
  • the fiber blend includes 20-80% bleached hardwood and the balance bleached softwood, with an internal chemistry of 0- 6% strength additive, and 0-6% AKD.
  • the fiber blend includes 50% bleached hardwood, 50% bleached softwood, and an internal chemistry of 2.5% strength additive and 3.5% hydrophobic additive (e.g., AKD).
  • AKD 3.5% hydrophobic additive
  • Embodiments of the present disclosure may be described in terms of functional and/or logical block components and various processing steps. It should be appreciated that such block components may be realized by any number of hardware, software, and/or firmware components configured to perform the specified functions.
  • an embodiment of the present disclosure may employ various integrated circuit components, e.g., memory elements, digital signal processing elements, field-programmable gate arrays (FPGAs), Application Specific Integrated Circuits (ASICs), logic elements, look-up tables, or the like, which may carry out a variety of functions under the control of one or more microprocessors or other control devices.
  • integrated circuit components e.g., memory elements, digital signal processing elements, field-programmable gate arrays (FPGAs), Application Specific Integrated Circuits (ASICs), logic elements, look-up tables, or the like, which may carry out a variety of functions under the control of one or more microprocessors or other control devices.
  • machine learning model is used without loss of generality to refer to any result of an analysis that is designed to make some form of prediction, such as predicting the state of a response variable, clustering patients, determining association rules, and performing anomaly detection.
  • machine learning refers to models that undergo supervised, unsupervised, semi-supervised, and/or reinforcement learning. Such models may perform classification (e.g., binary or multiclass classification), regression, clustering, dimensionality reduction, and/or such tasks.
  • ANN artificial neural networks
  • RNN recurrent neural networks
  • CNN convolutional neural network
  • CART classification and regression trees
  • ensemble learning models such as boosting, bootstrapped aggregation, gradient boosting machines, and random forests
  • Bayesian network models e.g., naive Bayes
  • PC A principal component analysis
  • SVM support vector machines
  • clustering models such as K-nearest- neighbor, K-means, expectation maximization, hierarchical clustering, etc.
  • module or “controller” refer to any hardware, software, firmware, electronic control component, processing logic, and/or processor device, individually or in any combination, including without limitation: application specific integrated circuits (ASICs), field-programmable gate-arrays (FPGAs), dedicated neural network devices (e.g., Google Tensor Processing Units), electronic circuits, processors (shared, dedicated, or group) configured to execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
  • ASICs application specific integrated circuits
  • FPGAs field-programmable gate-arrays
  • dedicated neural network devices e.g., Google Tensor Processing Units
  • processors shared, dedicated, or group configured to execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ceramic Engineering (AREA)
  • Table Devices Or Equipment (AREA)
  • Paper (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

L'invention concerne un gobelet à base de fibres sans plastique, formé par l'utilisation d'une suspension épaisse à base de fibres comprenant un additif hydrophobe et un additif renforçant, puis la formation d'un élément de gobelet par compression et séchage de la suspension épaisse à base de fibres dans un ensemble presse de formage ayant une forme interne caractérisée par un tronc conique. La suspension épaisse à base de fibres peut comprendre un mélange de pâte sèche de fibres vierges et de fibres recyclées, l'additif hydrophobe représente 1,0 à 10,0 % du poids de la pâte sèche et l'additif renforçant représente 1,0 à 10,0 % du poids de la pâte sèche. En particulier, la suspension épaisse à base de fibres peut comprendre environ 50 % de bois dur blanchi, environ 50 % de bois tendre blanchi, environ 2,5 % d'additif renforçant et environ 3,5 % d'additif hydrophobe par rapport au poids de la pâte sèche.
PCT/US2022/043516 2021-11-02 2022-09-14 Conception de gobelet à base de fibres, chimie et outillage WO2023080960A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP22890587.3A EP4426617A1 (fr) 2021-11-02 2022-09-14 Conception de gobelet à base de fibres, chimie et outillage
CA3237192A CA3237192A1 (fr) 2021-11-02 2022-09-14 Conception de gobelet a base de fibres, chimie et outillage
CN202280087225.8A CN118475515A (zh) 2021-11-02 2022-09-14 基于纤维的杯子设计、化学成分和加工
AU2022382632A AU2022382632A1 (en) 2021-11-02 2022-09-14 Fiber-based cup design, chemistry, and tooling
MX2024005353A MX2024005353A (es) 2021-11-02 2022-09-14 Dise?o, quimica y herramientas de vasos a base de fibra.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163274648P 2021-11-02 2021-11-02
US63/274,648 2021-11-02

Publications (1)

Publication Number Publication Date
WO2023080960A1 true WO2023080960A1 (fr) 2023-05-11

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PCT/US2022/043516 WO2023080960A1 (fr) 2021-11-02 2022-09-14 Conception de gobelet à base de fibres, chimie et outillage

Country Status (7)

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US (1) US20230138993A1 (fr)
EP (1) EP4426617A1 (fr)
CN (1) CN118475515A (fr)
AU (1) AU2022382632A1 (fr)
CA (1) CA3237192A1 (fr)
MX (1) MX2024005353A (fr)
WO (1) WO2023080960A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100294448A1 (en) * 2009-04-24 2010-11-25 David Pierce Processes for molding pulp paper containers and lids
CN105714596A (zh) * 2016-03-31 2016-06-29 金东纸业（江苏）股份有限公司 一种纸张的制造方法
US20200206984A1 (en) * 2016-07-26 2020-07-02 Footprint International, LLC Methods, Apparatus, and Chemical Compositions for Selectively Coating Fiber-Based Food Containers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100294448A1 (en) * 2009-04-24 2010-11-25 David Pierce Processes for molding pulp paper containers and lids
CN105714596A (zh) * 2016-03-31 2016-06-29 金东纸业（江苏）股份有限公司 一种纸张的制造方法
US20200206984A1 (en) * 2016-07-26 2020-07-02 Footprint International, LLC Methods, Apparatus, and Chemical Compositions for Selectively Coating Fiber-Based Food Containers

Also Published As

Publication number Publication date
CN118475515A (zh) 2024-08-09
CA3237192A1 (fr) 2023-05-11
US20230138993A1 (en) 2023-05-04
EP4426617A1 (fr) 2024-09-11
AU2022382632A1 (en) 2024-06-13
MX2024005353A (es) 2024-07-19

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