IPC Classes  ?

• B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
• B21D 22/20 - Deep-drawing
• B21D 22/22 - Deep-drawing with devices for holding the edge of the blanks
• B21D 24/04 - Blank holdersMounting means therefor
• B21D 37/20 - Making tools by operations not covered a single other subclass
• B21F 27/18 - Making special types or portions of network by methods or means specially adapted therefor of meshed work for filters or sieves
• B29C 51/08 - Deep-drawing or matched-mould forming, i.e. using mechanical means only

IPC Classes  ?

• D21J 3/00 - Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
• D21J 7/00 - Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Abstract

This disclosure describes systems and methods for creating porous molds using additive manufacturing processes such as three-dimensional (3D) printing. At a high level, it has been found that creating a generally porous mold, or a mold with porous regions or zones, can improve the performance of the mold and the quality of the parts created therefrom. It has further been determined that porous molds can be created using additive manufacturing techniques through manipulation of mold manufacturing parameters such as, but not limited to, layer thickness, number of perimeter layers, fill pattern, and fill density. Through variation of these manufacturing parameters, the porosity of a mold created by an additive manufacturing device, e.g., a 3D printer, can be tailored for use with molded fiber.

IPC Classes  ?

• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B29C 64/10 - Processes of additive manufacturing
• D21J 7/00 - Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Abstract

A container includes a molded fiber tray at least partially defining a tray internal volume. The tray includes a perimeter wall extending upward from a bottom tray surface, a rest extending outward from the perimeter wall, a parapet extending upward from the rest, and a tray build-up projecting inward from the parapet. The tray build-up and the rest at least partially define a gap therebetween. The container includes a molded fiber lid at least partially defining a lid internal volume. The lid includes a perimeter wall extending downward from a lid upper surface, and a ridge extending downward from the perimeter wall. The ridge includes an outer ridge wall, a lateral surface extending inward from the outer ridge wall, and a lid build-up projecting outward from the outer ridge wall. The lid build-up is configured to be received in the gap when the container is in a closed condition.

IPC Classes  ?

• B65D 43/02 - Removable lids or covers
• B65D 43/16 - Non-removable lids or covers hinged for upward or downward movement
• B65D 65/46 - Applications of disintegrable, dissolvable or edible materials

Abstract

A container includes a molded tray and a molded lid, both made of unitary fiber bodies. The tray includes at least one internal well and a perimeter engaging wall extending upward from a perimeter rim. The perimeter engaging wall includes an inner surface, an outer surface, and an uppermost surface. The lid includes a ceiling and defines a perimeter engaging receiver extending upward from a perimeter rim. The rim is defined by an inner wall, an outer wall, and an uppermost wall. The perimeter engaging wall is configured to be removably received in the perimeter engaging receiver.

IPC Classes  ?

• B65D 1/36 - Trays or like shallow containers with moulded compartments or partitions
• B65D 43/02 - Removable lids or covers
• B65D 43/06 - Removable lids or covers having a peripheral channel embracing the rim of the container

Abstract

A molded fiber part production line includes a forming station, a part transfer system, a press station, and a removal system. The forming station includes a slurry tank, a forming mold, and a mold actuation system. The part transfer system includes a part transfer feature and a conveyance mechanism. The press station includes a core mold, a cavity mold compatible with the core mold, and a press actuation system. The removal system includes a removal feature defining a plurality of part vacuum channels and a plurality of trim vacuum channels. The removal system also includes a conveyance mechanism for moving the removal feature from a position in engagement with at least one of the core mold and the cavity mold to another position.

IPC Classes  ?

• D21J 3/00 - Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds

Abstract

Systems and methods for providing compostable food containers which preserve the quality of a food product for an extended duration of time, and which optionally allow for cooking of the food product therein. In some implementations, the food containers are sturdy, stackable, insulating, and require minimal or no manual labor to assemble. In some implementations, the food container includes a base and a cover which cooperate to form a closed chamber for supporting, protecting, insulating and optionally cooking a food product, such as a pizza. The base and cover may each be formed of a single layer of material including, but not limited to, molded sugarcane fiber ("bagasse"), molded wood fiber, molded bamboo fiber, molded paper or plastic. The base and/or the cover may include one or more detachable portions that may be selectively separable from the remaining portion of the base and/or cover.

IPC Classes  ?

• A47J 47/14 - Carriers for prepared human food
• B65D 21/02 - Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
• B65D 25/04 - Partitions
• B65D 25/24 - External fittings for spacing bases of containers from supporting surfaces, e.g. legs
• B65D 43/02 - Removable lids or covers
• B65D 65/46 - Applications of disintegrable, dissolvable or edible materials
• B65D 81/26 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contentsApplications of corrosion inhibitors or desiccators
• B65D 85/36 - Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for bakery products, e.g. biscuits