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. 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. In particular, 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.

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. 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. In particular, 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 present invention discloses a pulp molding negative angle container comprising a conical pulp container which is open on the upper end, wherein: the inner wall of the open end of the pulp container has a separation space which is inclined downwards and set outwards; a protruding shoulder is provided on the outer wall of the open end of the pulp container, wherein the outer diameter of the protruding shoulder is larger than the inner diameter of the hole on the open end; wherein when two pulp containers are nested over each other, the protruding shoulder is placed on the upper hole of the open end and a separation gap is formed between the separation space on one pulp container and the outer wall on the other pulp container. The process comprises: A. injection; B. demolding. The present invention can greatly reduce the difficulty of separation.

The present invention discloses a pulp molding negative angle container comprising a conical pulp container which is open on the upper end, wherein: the inner wall of the open end of the pulp container has a separation space which is inclined downwards and set outwards; a protruding shoulder is provided on the outer wall of the open end of the pulp container, wherein the outer diameter of the protruding shoulder is larger than the inner diameter of the hole on the open end; wherein when two pulp containers are nested over each other, the protruding shoulder is placed on the upper hole of the open end and a separation gap is formed between the separation space on one pulp container and the outer wall on the other pulp container. The process comprises: A. injection; B. demolding. The present invention can greatly reduce the difficulty of separation.

In one example, a process for manufacture of a pulp-based dispensing capsule is disclosed. The process includes providing one or more mesh tool sets that are each contoured to one or more preform shapes of the dispensing capsule. Note that each preform shape is a partially shaped version of a final form shape of the pulp-based dispensing capsule. The process also includes providing a holding tank containing a suspension that includes water and pulp fibres; and arranging the mesh tool sets to allow immersion into and withdrawal of the mesh tool sets from the suspension. The process also includes applying a vacuum to the mesh tool sets so as to draw pulp fibres from the suspension onto the mesh tool sets while immersed in the suspension to form a preform pulp fibre mat; and in a second toolset, deforming each preform shape in the preform pulp fibre mat towards the final form shape by the application of pressure.

In a first step, a molding die is immersed in a raw liquid including cellulosic fibers. Then, the liquid of a raw liquid is sucked through a net material by a liquid suction part, so as to cause the cellulosic fibers to be laminated on the net material. In the second step, the cellulosic fibers laminated on the net material are dried, so as to form a protrusion. In the third step, the dried protrusion and the communication part are removed from the molding die. A passage part of the communication part is formed at a position where a projection portion had been arranged, the passage part being configured to communicate an inside of the protrusion with an outside of the protrusion.

In a first step, a molding die is immersed in a raw liquid including cellulosic fibers. Then, the liquid of a raw liquid is sucked through a net material by a liquid suction part, so as to cause the cellulosic fibers to be laminated on the net material. In the second step, the cellulosic fibers laminated on the net material are dried, so as to form a protrusion. In the third step, the dried protrusion and the communication part are removed from the molding die. A passage part of the communication part is formed at a position where a projection portion had been arranged, the passage part being configured to communicate an inside of the protrusion with an outside of the protrusion.

A system and method of producing a moulded article, e.g. a one-piece container, comprises delivering a fibre suspension to a porous mould and removing a suspending liquid (e.g. water) via pores of the porous mould. An inflatable bladder is inserted into the mould in a collapsed state and then inflated to apply pressure to internal walls of the article to remove water content. A wet embryonic form of the container is then transferred to a non-porous mould where an inflatable bladder applies internal pressure to compress the walls and remove further water content. The container is further dried by microwave and/or air drying and may be coated with a protective layer.

A mould (14) for forming an article from a fibre suspension. The mould includes an insert with a cavity (27) in the negative shape of an article to be formed and two regions of different porosity/permeability (28, 29) about the cavity (27). In use the mould communicates a suspending fluid of the fibre suspension, e.g. by vacuum pump, through the at least two regions of different porosity/permeability about the cavity. A formed shape (22) of fibres is left behind on the cavity.

A pulp mold includes a mold main body extending along a longitudinal axis and having an inner surface that defines a chamber, an outer surface opposite to the inner surface, and a plurality of channel grooves extending inwardly from the outer surface toward the inner surface and extending along a length of the outer surface. The chamber is divided into a plurality of chamber sections decreasing in diameters gradually and upwardly from the opening along the longitudinal axis. Each channel groove does not communicate with the chamber. A plurality of air holes extend from the outer surface to the inner surface, pass through the channel grooves, and communicate the chamber with the outside.