Containers for holding particulate materials are provided. The containers may be formed from molded pulp. The containers may include molded pulp shaped or threaded features formed integrally on the container that may aid in providing closure to the device. The containers may optionally include a fitment and/or liner, or may be free of fitments and liners. The containers may optionally have inner load bearing members. The containers may be stackable.

Containers for holding particulate materials are provided. The containers may be formed from molded pulp. The containers may include molded pulp shaped or threaded features formed integrally on the container that may aid in providing closure to the device. The containers may optionally include a fitment and/or liner, or may be free of fitments and liners. The containers may optionally have inner load bearing members. The containers may be stackable.

The disclosed principles provide for single use caps that may be applied to any of a number of receptacles, containers, vessels, needless connectors, or other device. A single use cap as disclosed herein includes a component that, when the cap is threaded onto a receptacle or device, is moved from an unused to a used position by the twisting force applied to the cap when secured onto the receptacle or device. Specifically, once the threads of the receptacle or device are received into the cap and a twisting or tightening force is continued to be applied to the cap, the continued twisting force causes this component to rotate laterally so that once the cap is removed from the receptacle or device, the threads of the cap are no longer reachable by the threads on the receptacle or device.

The disclosed principles provide for single use caps that may be applied to any of a number of receptacles, containers, vessels, needless connectors, or other device. A single use cap as disclosed herein includes a component that, when the cap is threaded onto a receptacle or device, is moved from an unused to a used position by the twisting force applied to the cap when secured onto the receptacle or device. Specifically, once the threads of the receptacle or device are received into the cap and a twisting or tightening force is continued to be applied to the cap, the continued twisting force causes this component to rotate laterally so that once the cap is removed from the receptacle or device, the threads of the cap are no longer reachable by the threads on the receptacle or device.