D21J5/00

Pick-up press device and method of producing a 3D-molded product from a pulp slurry
12180657 · 2024-12-31 · ·

The document relates to a pick-up press device for use in a process of producing a 3D molded product from a pulp slurry comprising a pick-up press tool presenting a porous first product face; a press tool presenting a second product face; and a vacuum source, connected to the pick-up press tool. The pick-up press tool and the press tool are vertically movable relative one another, wherein, in a first relative position of the press tools, at least one of the product faces is positioned so as to receive a pulp slurry layer in liquid form to its product face, and wherein in a second relative position of the press tools, the product faces are pressed towards each other for pressing the pulp slurry layer. The device further comprises a first transfer tool, wherein the first transfer tool comprises a first forming surface portion, configured to conform to a first portion of the porous first product face, such that a forming gap is defined there between, said forming gap defining a desired pulp slurry layer thickness; and a second forming surface portion, configured to diverge from a second portion of the porous first product face, such that a non-forming space is defined by the second forming surface portion and a second portion of the porous first product face, said non-forming space having a greater thickness than the forming gap.

Pick-up press device and method of producing a 3D-molded product from a pulp slurry
12180657 · 2024-12-31 · ·

The document relates to a pick-up press device for use in a process of producing a 3D molded product from a pulp slurry comprising a pick-up press tool presenting a porous first product face; a press tool presenting a second product face; and a vacuum source, connected to the pick-up press tool. The pick-up press tool and the press tool are vertically movable relative one another, wherein, in a first relative position of the press tools, at least one of the product faces is positioned so as to receive a pulp slurry layer in liquid form to its product face, and wherein in a second relative position of the press tools, the product faces are pressed towards each other for pressing the pulp slurry layer. The device further comprises a first transfer tool, wherein the first transfer tool comprises a first forming surface portion, configured to conform to a first portion of the porous first product face, such that a forming gap is defined there between, said forming gap defining a desired pulp slurry layer thickness; and a second forming surface portion, configured to diverge from a second portion of the porous first product face, such that a non-forming space is defined by the second forming surface portion and a second portion of the porous first product face, said non-forming space having a greater thickness than the forming gap.

Fiber-based food containers

Methods and apparatus for manufacturing a microwavable food container include: forming a wire mesh over a mold comprising a mirror image of the microwavable food container; immersing the wire mesh in a fiber-based slurry bath; drawing a vacuum across the wire mesh to cause fiber particles to accumulate at the wire mesh surface; and removing the wire mesh including the accumulated fiber particles from the slurry bath; wherein the slurry comprises one or more of a moisture barrier, an oil barrier, and a vapor barrier.

Fiber-based food containers

Methods and apparatus for manufacturing a microwavable food container include: forming a wire mesh over a mold comprising a mirror image of the microwavable food container; immersing the wire mesh in a fiber-based slurry bath; drawing a vacuum across the wire mesh to cause fiber particles to accumulate at the wire mesh surface; and removing the wire mesh including the accumulated fiber particles from the slurry bath; wherein the slurry comprises one or more of a moisture barrier, an oil barrier, and a vapor barrier.

WET BLANK FLIPPING METHOD FOR MANUFACTURING MOLDED PULP PRODUCTS AND PULP MOLDING MACHINE
20250019906 · 2025-01-16 ·

A wet blank flipping method for manufacturing pulp molded products, which follows these steps: after the wet blank is formed in the suction filtration forming mold, it is transferred to the hot-pressing shaping device for hot-press drying and shaping to create pulp molded products, characterized in that: said transfer is done using a first wet blank transfer device and a second wet blank transfer device to move the wet blank from the suction filtration forming mold to the hot-pressing shaping device; wherein, the first wet blank transfer device extracts the wet blank from the suction filtration forming mold and transfers it to the second wet blank transfer device, which then moves the wet blank to the hot-pressing shaping device.

WET BLANK FLIPPING METHOD FOR MANUFACTURING MOLDED PULP PRODUCTS AND PULP MOLDING MACHINE
20250019906 · 2025-01-16 ·

A wet blank flipping method for manufacturing pulp molded products, which follows these steps: after the wet blank is formed in the suction filtration forming mold, it is transferred to the hot-pressing shaping device for hot-press drying and shaping to create pulp molded products, characterized in that: said transfer is done using a first wet blank transfer device and a second wet blank transfer device to move the wet blank from the suction filtration forming mold to the hot-pressing shaping device; wherein, the first wet blank transfer device extracts the wet blank from the suction filtration forming mold and transfers it to the second wet blank transfer device, which then moves the wet blank to the hot-pressing shaping device.

Methods and apparatus for manufacturing fiber-based produce containers

Methods and apparatus for manufacturing a microwavable food container include: forming a wire mesh over a mold comprising a mirror image of the microwavable food container; immersing the wire mesh in a fiber-based slurry bath; drawing a vacuum across the wire mesh to cause fiber particles to accumulate at the wire mesh surface; and removing the wire mesh including the accumulated fiber particles from the slurry bath; wherein the slurry comprises one or more of a moisture barrier, an oil barrier, and a vapor barrier.

Methods and apparatus for manufacturing fiber-based produce containers

Methods and apparatus for manufacturing a microwavable food container include: forming a wire mesh over a mold comprising a mirror image of the microwavable food container; immersing the wire mesh in a fiber-based slurry bath; drawing a vacuum across the wire mesh to cause fiber particles to accumulate at the wire mesh surface; and removing the wire mesh including the accumulated fiber particles from the slurry bath; wherein the slurry comprises one or more of a moisture barrier, an oil barrier, and a vapor barrier.

Fiberboard manufacturing method and fiberboard
12163284 · 2024-12-10 · ·

[Object] To provide a fiberboard manufacturing method that is suitable for efficiently manufacturing a fiberboard in which warpage is suppressed, and to provide a fiberboard that is obtained by such a fiberboard manufacturing method. [Solution] The fiberboard manufacturing method of the present invention includes the following pulp crushing step S1, mat forming step S2, and hot-pressing step S3. In the pulp crushing step S1, pulp dispersed in water is beaten in a gap between opposed blades to thereby produce a plant-based fiber material that has a particle size D50 of 50 to 110 m and a freeness value of 150 to 300 ml and that contains an adhesive component. In the mat forming step S2, a mat is formed from the plant-based fiber material. In the hot-pressing step S3, by hot-pressing the mat, a fiberboard is formed from the mat through a process of plasticizing the adhesive component in the mat.

Fiberboard manufacturing method and fiberboard
12163284 · 2024-12-10 · ·

[Object] To provide a fiberboard manufacturing method that is suitable for efficiently manufacturing a fiberboard in which warpage is suppressed, and to provide a fiberboard that is obtained by such a fiberboard manufacturing method. [Solution] The fiberboard manufacturing method of the present invention includes the following pulp crushing step S1, mat forming step S2, and hot-pressing step S3. In the pulp crushing step S1, pulp dispersed in water is beaten in a gap between opposed blades to thereby produce a plant-based fiber material that has a particle size D50 of 50 to 110 m and a freeness value of 150 to 300 ml and that contains an adhesive component. In the mat forming step S2, a mat is formed from the plant-based fiber material. In the hot-pressing step S3, by hot-pressing the mat, a fiberboard is formed from the mat through a process of plasticizing the adhesive component in the mat.