Applying or generating heat or pressure or combinations thereof

Full Title

Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags > Applying or generating heat or pressure or combinations thereof

Child Classifications

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• B65B 2051/105
• B65B 51/12 by resilient means, e.g. brushes
• B65B 51/14 by reciprocating or oscillating members (B65B51/148 takes precedence)
• B65B 51/16 by rotary members
• B65B 51/18 by endless bands or chains
• B65B 51/20 by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets (shrinking wrappers by heating B65B53/02)
• B65B 51/22 by friction or ultrasonic or high-frequency electrical means
• B65B 51/24 to produce bead seals (combined with severing by heated wires or rods B65B61/10)
• B65B 51/26 Devices specially adapted for producing transverse or longitudinal seams in webs or tubes