Patent classifications
D21J3/00
Molded articles from a fiber slurry
Contoured articles formed in a mold from a fiber slurry are provided. The articles comprise a blend of cellulose fibers and cellulose ester, such as cellulose ester staple fibers. The articles are suitable in a wide array of end uses, including as cups, lids, boxes or pouches, storage containers, trays, plates, food trays, cutlery, coffee cups, coffee cup lid, packaging, bowls, clam shells, bottle caps, straws, covers, and packaging inserts.
HEMP COMPOSITES
A hemp composite includes hemp, paper, and oil. Making a hemp composite includes processing hemp to yield a processed hemp. The processed hemp includes water. Making a hemp composite further includes combining the processed hemp with paper and oil to yield a hemp mixture, removing at least some of the water from the hemp mixture, and drying the hemp mixture to yield the hemp composite.
CONTINUOUS PROCESSING OF CELLULOSE NANOFIBRIL SHEETS THROUGH CONVENTIONAL EXTRUSION
The present disclosure provides to a novel continuous processing method to prepare sheets comprising cellulose nanofibril (CNF) and carboxymethyl cellulose (CMC). Single screw extrusion was utilized to continuously process mechanically fibrillated cellulose nanofibrils (CNF) into sheets. Water-retention ability and stability of CNF suspensions containing different processing aids was assessed through centrifugation and zeta potential analysis. Subsequently, highly loaded pastes (up to ˜25 wt. % total solids content) containing the best performing processing aids (carboxymethyl cellulose (CMC), xanthan gum (XG), and anionic polyacrylamide (aPAM)) and CNF were prepared using a Brabender with Banbury mixer-head at a dry weight ratio of either 0.1 to 1 or 0.15 to 1, respectively. Validation of the mixing procedure proved that highly loaded CNF pastes can be processed in under 40 minutes, saving up to 40 days in preparation and drying time.
CONTINUOUS PROCESSING OF CELLULOSE NANOFIBRIL SHEETS THROUGH CONVENTIONAL EXTRUSION
The present disclosure provides to a novel continuous processing method to prepare sheets comprising cellulose nanofibril (CNF) and carboxymethyl cellulose (CMC). Single screw extrusion was utilized to continuously process mechanically fibrillated cellulose nanofibrils (CNF) into sheets. Water-retention ability and stability of CNF suspensions containing different processing aids was assessed through centrifugation and zeta potential analysis. Subsequently, highly loaded pastes (up to ˜25 wt. % total solids content) containing the best performing processing aids (carboxymethyl cellulose (CMC), xanthan gum (XG), and anionic polyacrylamide (aPAM)) and CNF were prepared using a Brabender with Banbury mixer-head at a dry weight ratio of either 0.1 to 1 or 0.15 to 1, respectively. Validation of the mixing procedure proved that highly loaded CNF pastes can be processed in under 40 minutes, saving up to 40 days in preparation and drying time.
THERMOFORMABLE DUAL OVENABLE RECYCLABLE COATED CELLULOSIC BOARD, DUAL OVENABLE RECYCLABLE COATED CELLULOSIC BOARD FOOD VESSELS THERMOFORMED THEREFROM, AND METHODS FOR MANUFACTURING AND USING THEREOF
A method for manufacturing a thermoformable dual ovenable coated cellulosic board includes coating an aqueous-based polyester acrylate copolymer dispersion basecoat on a first major side of a cellulosic board substrate and coating an aqueous-based polyester acrylate copolymer dispersion barrier topcoat on the aqueous-based polyester acrylate copolymer dispersion basecoat.
THERMOFORMABLE DUAL OVENABLE RECYCLABLE COATED CELLULOSIC BOARD, DUAL OVENABLE RECYCLABLE COATED CELLULOSIC BOARD FOOD VESSELS THERMOFORMED THEREFROM, AND METHODS FOR MANUFACTURING AND USING THEREOF
A method for manufacturing a thermoformable dual ovenable coated cellulosic board includes coating an aqueous-based polyester acrylate copolymer dispersion basecoat on a first major side of a cellulosic board substrate and coating an aqueous-based polyester acrylate copolymer dispersion barrier topcoat on the aqueous-based polyester acrylate copolymer dispersion basecoat.
PULP TRANSPORTATION SYSTEM
A pulp transportation system is adapted for transporting a pulp among a pulp-supply machine and a plurality of forming machines, and includes a pump unit, a first pipe unit, a second pipe unit and a valve unit. The pump unit is adapted for urging the pulp to flow. The valve unit is operable to control flow of the pulp through the first pipe unit and the second pipe unit, such that the flow of the pulp is convertible between a pulp-supply state, in which the pulp flows out from the pulp supply machine into at least one of the forming machines, and a pulp-return state, in which the pulp flows out from at least one of the forming machines into the pulp supply machine.
DOSING DEVICE
The present invention relates to a dosing device (too) that is integrally made of molded pulp fiber. The dosing device (too) comprises a container portion (200) for receiving and retaining a dosage material having an opening (250) at an upper side (US) of the dosing device (too) to access the dosage material. The dosing device (too) comprises a handle portion (300) for manually moving the container portion (200) in a dosing process. The handle portion (300) is connected to an outer surface (211) of the container body (210) by a connecting portion (350) of the handle portion (300). A rim portion (252) of the container portion (200), which delimits the opening (250), and the handle portion (300) extend in a common plane (CP) and define a circumferential edge (101) of the dosing device (101). The dosing device (100) comprises a ribbing portion (400), which extends from the circumferential edge (101) at least at the handle portion (300) to a lower side of the dosing device (too), for dissipating mechanical stresses arising in the dosing process. The invention relates also to a method for manufacturing the dosing device (too) and a use of the dosing device (too) for dosing a dosage material.
DOSING DEVICE
The present invention relates to a dosing device (too) that is integrally made of molded pulp fiber. The dosing device (too) comprises a container portion (200) for receiving and retaining a dosage material having an opening (250) at an upper side (US) of the dosing device (too) to access the dosage material. The dosing device (too) comprises a handle portion (300) for manually moving the container portion (200) in a dosing process. The handle portion (300) is connected to an outer surface (211) of the container body (210) by a connecting portion (350) of the handle portion (300). A rim portion (252) of the container portion (200), which delimits the opening (250), and the handle portion (300) extend in a common plane (CP) and define a circumferential edge (101) of the dosing device (101). The dosing device (100) comprises a ribbing portion (400), which extends from the circumferential edge (101) at least at the handle portion (300) to a lower side of the dosing device (too), for dissipating mechanical stresses arising in the dosing process. The invention relates also to a method for manufacturing the dosing device (too) and a use of the dosing device (too) for dosing a dosage material.
TOOL OR TOOL PART, SYSTEM INCLUDING SUCH A TOOL OR TOOL PART, METHOD OF PRODUCING SUCH A TOOL OR TOOL PART AND METHOD OF MOLDING A PRODUCT FROM A PULP SLURRY
The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.