A tub is an open-top circular or oblong

container A container is any receptacle or enclosure for holding a product used in storage, packaging, and transportation, including shipping. Things kept inside of a container are protected on several sides by being inside of its structure. The term ...

. In earlier times they were made from wooden staves held together with iron hoops and were made by coopers. Modern tubs used in industry might be made from concrete, metal or plastic. Small plastic tubs used in the home may have a separate or attached snap-on lid or cover; some tubs may have latched lids. Tubs are used for multiple

packaging Packaging is the science, art and technology of enclosing or protecting products for distribution, storage, sale, and use. Packaging also refers to the process of designing, evaluating, and producing packages. Packaging can be described as a coo ...

applications as well as household and industrial storage.

Construction

FEMA - 38784 - Americorp makeing a large ice chest at the DRC in Texas

Many tubs are made of formed thermoplastics such as

PET A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive/ cute appearances, inte ...

polyester, polystyrene, or

polypropylene Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer Propene, propylene. Polypropylene belongs to the group of polyolefin ...

. Processes of creating tubs are either

thermoforming Thermoforming is a manufacturing process where a plastic sheet is heated to a pliable forming temperature, formed to a specific shape in a mold, and trimmed to create a usable product. The sheet, or "film" when referring to thinner gauges and cert ...

injection moulding Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for ...

. Tubs can also be formed of

paperboard Paperboard is a thick paper-based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.30 mm, 0.012 in, or 12 Inch#Equivalents, points) than paper and has certain superior ...

molded pulp Molded pulp or molded fiber (also spelled as moulded pulp or moulded fibre) is a packaging material, that is typically made from recycled paperboard and/or newsprint. It is used for protective packaging or for food service trays and beverag ...

, and aluminum. Some tubs have special microwave features such as susceptors Tubs can have a heat sealed ''lidding film'' attached prior to the lid being placed on. Some tubs have a Tamper-evident band or ''security strip'' to indicate premature opening. Several types of latches and means of lid attachment are available. Both the body and lid of a tub can be printed or have attached

labels A label (as distinct from signage) is a piece of paper, plastic film, cloth, metal, or other material affixed to a container or product. Labels are most often affixed to packaging and containers using an adhesive, or sewing when affixed to ...

Notes

References

* Soroka, W, "Fundamentals of Packaging Technology", IoPP, 2002, * Yam, K.L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009, {{packaging Containers Food packaging Packaging Wood products

Construction

See also

Notes

References