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  2. Vacuum packing - Wikipedia

    en.wikipedia.org/wiki/Vacuum_packing

    External vacuum sealers involve a bag being attached to the vacuum-sealing machine externally. The machine will remove the air and seal the bag, which is all done outside the machine. A heat sealer is often used to seal the pack. Typically these units use a dry piston vacuum pump which is often considered a "maintenance-free" pump.

  3. Heat sealer - Wikipedia

    en.wikipedia.org/wiki/Heat_sealer

    Small impulse sealer Heat-sealed material lies on a warehouse floor. Notice the corded heat sealer to the left. Heat sealer used to prepare plastic bag of lettuce for shelf life testing Continuous band heat sealer. A heat sealer is a machine used to seal products, packaging, and other thermoplastic materials using heat. This can be with uniform ...

  4. Hermetic seal - Wikipedia

    en.wikipedia.org/wiki/Hermetic_seal

    A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals, rubber, and plastics. Hermetic seals are essential to the correct ...

  5. Vertical form fill sealing machine - Wikipedia

    en.wikipedia.org/wiki/Vertical_form_fill_sealing...

    The typical machine is loaded with a continuous flat roll of plastic film, which has usually had labeling and artwork applied. Plastic is the most commonly used packaging material in the food industry, but the technology can be used to form continuous metallized foil/film, paper, and fabric product containers by changing the edge sealing/seaming methods.

  6. Induction sealing - Wikipedia

    en.wikipedia.org/wiki/Induction_sealing

    In packaging, it is used for package fabrication such as forming tubes from flexible materials, attaching plastic closures to package forms, etc. Perhaps the most common use of induction sealing is cap sealing, a non-contact method of heating an inner seal [1] [2] to hermetically seal the top of plastic and glass containers. This sealing ...

  7. Case sealer - Wikipedia

    en.wikipedia.org/wiki/Case_sealer

    A case sealer or box sealer is a piece of equipment used for closing or sealing corrugated boxes. It is most commonly used for regular slotted containers (RSC) and can involve adhesive (cold water-borne or hot melt adhesive ), box sealing tape , or gummed (water activated) tape .

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