A container having enhanced wall integrity with a rotational element and a stacking feature is provided. The container includes a sidewall having an alignment structure formed along a height of the sidewall and an upper stacking shoulder formed above the alignment structure. The alignment structure is adapted for orienting the container with respect to a second container so that the alignment structures of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. The upper stacking feature is formed into the sidewall of the container and includes a radially extending wall portion and an upwardly extending wall portion that together form a stacking corner. The stacking shoulder is provided above the alignment structure facilitates nesting of two containers when stacked together.

A tool for producing a plastic container in a thermoform process, in particular a plastic deep drawing process, with a positive mold, is described. The container may have a bottom section for forming a container bottom. The container may also have a lateral wall section for forming a circumferential, lateral wall integrally formed with the container bottom from the same material. The container may also have a wall for forming a stacking edge formed as a hollow profile, circumferentially protruding beyond an external contour of the lateral wall of the container. In a molding position for forming the container, the wall is arranged circumferentially protruding around an entire external side of the positive mold. The wall is movable out of the molding position into a demolding position. A method for producing the container by the tool is also provided.

A tool for producing a plastic container in a thermoform process, in particular a plastic deep drawing process, with a positive mold, is described. The container may have a bottom section for forming a container bottom. The container may also have a lateral wall section for forming a circumferential, lateral wall integrally formed with the container bottom from the same material. The container may also have a wall for forming a stacking edge formed as a hollow profile, circumferentially protruding beyond an external contour of the lateral wall of the container. In a molding position for forming the container, the wall is arranged circumferentially protruding around an entire external side of the positive mold. The wall is movable out of the molding position into a demolding position. A method for producing the container by the tool is also provided.

A method of manufacturing food packaging comprising a receptacle 100 of a final shape and a coating 600. The method comprises fabricating the receptacle 100 from raw materials, the raw materials comprising a fibrous material and a biopolymer; applying at least one layer of the coating 600 to the receptacle 100, the coating 600 comprising a biopolymer coating; and drying the at least one layer of the coating 600.

Provided are a cup made of metal and a method of manufacturing the same capable of reducing material costs and molding costs, preventing deformation while reducing weight, preventing a user's mouth or hand from touching an edge of a metal material, and preventing hygiene problems. A cup made of metal open on an upper surface side includes a bottom portion and a body portion, the cup including a curled portion at the tip end on an upper opening side of the body portion. The curled portion includes a curvature region from the body portion toward the tip end, and a section at least from the body portion to a lowermost portion of the curled portion in the curvature region has a radius of curvature that decreases stepwise or continuously.

Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.

Disclosed is an airtight container including a main body with an opening, and a cover, the airtight container including: an edge portion to press a sealing edge formed at an upper end of the main body; a locking clamp including an engaging portion to engage with an engaging-portion holder extended from the sealing edge or formed in a lateral wall; and a hinge provided between the edge portion and the locking clamp and including a material to be folded and unfolded with respect to the edge portion so that the engaging portion can be locked to and released from the engaging-portion holder. Thus, there is provided an airtight container with a soft hinge and a double injection-moulding structure, which is improved in durability because the hinge is prevented from damage even though it is used for a long time.

Disclosed is an airtight container including a main body with an opening, and a cover, the airtight container including: an edge portion to press a sealing edge formed at an upper end of the main body; a locking clamp including an engaging portion to engage with an engaging-portion holder extended from the sealing edge or formed in a lateral wall; and a hinge provided between the edge portion and the locking clamp and including a material to be folded and unfolded with respect to the edge portion so that the engaging portion can be locked to and released from the engaging-portion holder. Thus, there is provided an airtight container with a soft hinge and a double injection-moulding structure, which is improved in durability because the hinge is prevented from damage even though it is used for a long time.

The present disclosure describes a container that includes a body having a lower surface, an upper rim, and a plurality of side walls that extend between the lower surface and the upper rim, wherein the upper rim defines an opening to an interior space of the body, a flexible cover that covers the opening of the body and is bonded to the body along the upper rim, and gas-permeable material through which gas can enter and exit the interior space of the body. The upper rim of the body is spaced apart from any of the gas-permeable material, such that the cover can be peeled away from the upper rim to expose the opening while leaving the gas-permeable material intact.

The present disclosure describes a container that includes a body having a lower surface, an upper rim, and a plurality of side walls that extend between the lower surface and the upper rim, wherein the upper rim defines an opening to an interior space of the body, a flexible cover that covers the opening of the body and is bonded to the body along the upper rim, and gas-permeable material through which gas can enter and exit the interior space of the body. The upper rim of the body is spaced apart from any of the gas-permeable material, such that the cover can be peeled away from the upper rim to expose the opening while leaving the gas-permeable material intact.