Wrapping Machines

A wrapping machine is used to wrap a flexible material like plastic sheet or film, foil, paper or other materials around a product. They can be used to wrap a product vertically or horizontally.



The package wrapping machine is mainly consists of rolling frame, pulling machine, odd-track machine etc. Wrapping machine is suitable for the packaging of solid object with regular form. Such as biscuit, bread, sweet, everyday thing and and industrial part and so on.

• Shrink Wrapping: Shrink wrapping is a process that uses relatively soft polyolefin film in which a loose sheath of film is created around the product, often sealed on two sides. The loosely sheathed product passes through a heat source, which shrinks the film to the dimensions of the product. The result is a very tight wrap, conforming to the product shape, often with a ridge of plastic around the perimeter of the product or gaps in film on either end. Shrink wraps are typically stronger than overwraps and the machines are inherently very flexible.
  
  The downside is that shrink wraps can be less attractive than overwraps. And operational costs are often higher because of film waste and energy consumption. "stretch" and "shrink" obviously don't mean the same thing. Stretch wrappers, a popular choice for wrapping pallet loads of products, achieve tight wraps by expanding the stretch film-rubber-band-like-before enveloping the product and letting the film return to its original size.
  
  
• Flow Wrapping: Flow wrapping is a horizontal-motion process in which product of any shape is wrapped in clear/ printed PP film. The end result is a flexible package with a non-lap type seal on the bottom and crimped end seals. Both the process and films in flow wrapping are quite different from overwrapping. Flow wrap BOPP films, for example, need only to seal to themselves. Overwrap films need to seal to themselves and the other side. There are zillions of products that are flow-wrapped. Think wipes, tissues, vending machine candy bars, etc.
  
  
• Overwrapping: Overwrapping is a process in which a box-shaped carton, tray, bundle, etc. is wrapped and sealed in any of a variety of relatively stiff, single- or multi-ply web materials including clear, printed or metalized polypropylene (PP), cellophane, paper, glassine, waxed paper, aluminum foil or metalized paper/BOPP (biaxially oriented polypropylene). The end result looks like a "gift wrap," with one long seam located either on the bottom or side of the package and each end of the package neatly "tucked, folded and sealed." The first tuck-and-fold machines were designed in the 1920s by the original Package Machinery Company. Tear tape is often used as an easy-open feature. Overwrapping machines are built in elevator, in-line, turret or rotary styles. Examples of overwrapped products include cigarettes, Easter "PEEPS" candies, CDs/DVDs, frozen food cartons, cartons/boxes of tea.