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  • What are Suction Cups?

    2010/12/25

    As per their name, suction cups create adherence through suction. When they are applied to a surface and pressed, they expel some of their air underneath the cup. When the pressure is alleviated, air cannot reenter the cup as long as it is has been applied to a flat surface. A higher atmospheric pressure then exists underneath the cup, holding it in place.

    If the pvc suction cup is made out of good materials and is well-designed, it can remain in place for quite some time. Furthermore, it is possible for suction cups to hold a significant amount of weight if they are designed and applied properly. TPR Suction cups are often used, in combination with a hook, to hang calendars, signs, even posters. Sometimes, they are used to adhere a rug or mat to a floor. For example, plastic mats have been designed for the floors of showers and bath tubs. Intended to keep bathers from slipping as they enter and exit the tub, as well as during bathing, many of these plastic mats have suction cups on the bottom so that they stay in place.

    Historians believe that suction cups were first invented around the 3rd century BC. Because plastic was not an available material at that time, suction cups were made out of halved gourds. At that time, many people believed that ailments could be cured through the process of blood letting. Although this is know known to be an ineffective method, it survived for many centuries after this period. The gourds were applied to suck blood out from internal organs. It is believed that Hippocrates was treated with this method.

    The plastic suction cup that is used in industry today was patented in 1882. The design is based on a natural biological design. The octopus has numerous TPU suction cup-like features along its arms. This was the inspiration for today’s patented silicone suction cup.