Structures including a curved corrugated wall fabricated from a plurality of layers formed of one or more shaped strips and methods of forming the structures are described. A shaped strip used in the fabrication includes a variable profile across the width of the strip with a first edge of a strip defining a series of cell profiles of a first geometric shape and a second, opposite edge of the strip defining a series of cell profiles of a second, different geometric shape, with each cell transitioning from the first profile to the second profile across the width of the strip. The geometry of the cell profiles at either end of each cell can be designed with respect to one another to allow for radial orientation of the strip about an axis with little or no deformation or stress on the strip edges.

Structures including a curved corrugated wall fabricated from a plurality of layers formed of one or more shaped strips and methods of forming the structures are described. A shaped strip used in the fabrication includes a variable profile across the width of the strip with a first edge of a strip defining a series of cell profiles of a first geometric shape and a second, opposite edge of the strip defining a series of cell profiles of a second, different geometric shape, with each cell transitioning from the first profile to the second profile across the width of the strip. The geometry of the cell profiles at either end of each cell can be designed with respect to one another to allow for radial orientation of the strip about an axis with little or no deformation or stress on the strip edges.

A method for the three-dimensional shaping of flat material made from in particular, natural fibers, such as for example, paper or cardboard, using a deep-drawing piston and a die, through which or into which the material is drawn. The diameter of the deep-drawing piston plus the material thickness of the deep-drawn material corresponds at least approximately to the diameter of the die.

A paper lid that is mainly made of paper includes a top plate portion extending in a first direction, an inner fitting portion extending in a second direction and being continuous with the top plate portion, a peak portion extending in a third direction and being continuous with the inner fitting portion, an outer fitting portion extending in a fourth direction, facing the inner fitting portion at a distance, and being continuous with the peak portion, and a flange portion extending in a fifth direction, being continuous with the outer fitting portion, and including an end of the paper lid.

A method for producing a paper lid includes a first step of holding down an outer edge area of a blank that is mainly made of paper, a second step of forming an inner fitting portion in a central area of the blank, while holding down the outer edge area, and a third step of forming an outer fitting portion in the central area, where the inner fitting portion is formed, while holding down the outer edge area.

A pulp-molded paper container is introduced herein, which comprises a top cover body, a bottom box body and at least one pivot portion. The top cover body comprises a top sidewall having an inner surface. The bottom box body comprises a bottom sidewall having an outer surface and a recess portion. A plane-to-plane contact is constituted with occurrence of a static friction force, between the inner surface of the top sidewall and the outer surface of the bottom sidewall, by way of an elastic deformation effect of the recess portion under a manner while the bottom box body and the top cover body mutually matched in a closed manner, whereby the static friction force can make a tight retention occurring along between the top cover body and the bottom box body.

The disclosed embodiments relate to an insulative protective packaging material constructed using recyclable paper materials. The packaging material includes one or more plies of paper adhered to each other. The one or more plies can have protrusions that form gas pockets. The gas pockets can be sealed by another ply to provide shock absorbency and insulation. Further, the plies can be used in multiple ways such as by nesting the protrusions of one ply into the recessed of another ply, layering multiple plies on top of each other, or individually. Each ply can be substantially flat or have protrusions. The protrusions can be made in various ways such as alternating the directions that they extend and varying the shapes of the protrusions. The resulting packaging material can be used as a shipping container or as liners within shipping containers.

A molded paper structure that provides cushioning and the method of manufacturing. The molded paper cushioning is flexible, with a continuous surface, without the use of folds or external adhesives. In the method of manufacture, paper sheet material is soaked with water and subsequently passed through a compression mold that forms the paper into a cushioning shape.

Methods and apparatus for vacuum forming a beverage carrier yoke are described. The yoke comprises a number (e.g., four or six) collars interconnected by a web, and each collar exhibits dimensionsincluding a nominal diameter and a substantially uniform thicknessselected to improve strength and increase comfort. The yoke is produced using a slurry comprising a moisture barrier and a fiber base.

Compostable cutlery utensils made by forming a pliable composite sheet having an internal substrate of overlaying food-grade paper sheets of collective number and thickness suitable for making a required item of cutlery, the internal paper sheets each being coated with a settable food-grade adhesive substance, such as by being dipped into a bath of liquid glue, applying an outer covering of food-grade paper to each major external side of the substrate to form a pliable composite sheet, thereafter forming the shape of the utensil, such as by the use of a two-part mould in the collective shape and size of the required utensil, removing, such as by cutting, the formed utensil from the composite sheet before the adhesive has set, and thereafter allowing or causing the adhesive substance to set to thereby produce a rigid compostable cutlery utensil.