The common market shrink packaging mode has a single and many together to shrink. What are the requirements for products in to cluster packaging? When we need shrink film for package, according to different shrinkage film, in a slightly different way. Now commonly used with PE or POF film, PE film is for sleeve  packaging . For a single row of columns, when this form of requirement is not to need to shrink products. When the packaging film is POF film, packaging can be divided into single row of columns, or multi row and multi. Then on the contractility of products has certain requirements.
  1 products should not be too light: product too light friction force on the belt to go small, sealing and cutting process will cause the product to fall backwards. We needs to tell shrink machine manufacturers, make corresponding rectification in the production design.
  2 too small a box: box is too small will use the box has left behind the phenomenon in the transportation process, the number of rows of more and more difficult to operate. Then you can change the arrangement of equipment, the arrangement to solve the box.