Abstract: There is disclosed a receptacle (10) comprising: a container (20) having an opening (28), the opening having a circular profile; and a lid (50) for closing the opening of the container; wherein the lid and container are configured to lock together with a rotational friction lock, the rotational friction lock comprising a protruding locking tab (30) on a surface of the container or the lid and a locking surface profile (68) defined on the other of the lid or the container; wherein the locking surface is configured to oppose the locking tab when the lid closes the opening of the container, the locking surface having a locking portion (74), and the locking portion having a continuous surface with a varying radius such that friction between the locking tab and the locking portion varies on relative rotation between the lid and the container.

Abstract: There is disclosed a method of forming a biodegradable container, such as a cup, comprising a plurality of successive press forming operations, each press forming operation comprising relative movement between an outer die 202 and an inner punch 204 from an open configuration to a forming configuration to shape a dough 400 as it expands. There is also disclosed a corresponding forming apparatus and container.

Abstract: There is disclosed a method of forming a biodegradable container, such as a cup, comprising a plurality of successive press forming operations, each press forming operation comprising relative movement between an outer die 202 and an inner punch 204 from an open configuration to a forming configuration to shape a dough 400 as it expands. There is also disclosed a corresponding forming apparatus and container.