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Plastic living hinges are typically manufactured in an injection molding operation [2] [3] that creates all three parts at one time as a single piece, and if correctly designed and constructed, it can remain functional over the life of the part. Thermoforming can also produce hinged products.
Diagram of a structure featuring plastic hinges. In the structural engineering beam theory, plastic hinge is the deformation of a section of a beam where plastic bending occurs. [1] In earthquake engineering plastic hinge is also a type of energy damping device allowing plastic rotation [deformation] of an otherwise rigid column connection. [2]
Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code under its flap. As polypropylene is resistant to fatigue, most plastic living hinges, such as those on flip-top bottles, are made from this material. However, it is important to ensure that chain molecules are oriented across the hinge to maximise strength.
Living hinge A hinge of flexible plastic that creates a join between two objects without any knuckles or pins. Molded as a single piece, they never rust or squeak, and have several other advantages over other hinges, but are more susceptible to breakage. [12] Other types of hinges include: Coach; Counter Flap; Cranked or storm-proof; Double ...
These clear plastic containers have lids with hinge-locking clasps on each side and a silicone seal that ensures they are leakproof and airtight. There are six containers in each of the four ...
Floating hinge, a type of hinge that enables one of the objects to move away from the other; Geared continuous hinge, a type of continuous hinge; Living hinge, a thin flexible hinge made from the same material as the two rigid pieces it connects; Plastic hinge in structural engineering beam theory; Stamp hinge in philately