Bundle wrapped products can be stacked on pallet / spiral wrapped and transported to point of sale. Some product containers, can not withstand the compression weight of stacking on without addition of supporting media. Gable top cartons are one example  where the gables can bend under top pressure leading to the collapse of the pallet. One can improve the compressive strength of the gable top shrink bundle by inserting a vertical sheet of cardboard between rows.

 Following customer demands, Autopack has developed a very simple and inexpensive card inserting option to complement its range of Shrink Bundlers. 

The vertical card inserter is fully adjustable covering range from 180ml to 1L gable top packages. 

Recently installed Autopack Machine for Shrink Packing of tapered Ice cream tubs.Totally Cool Icecream in USA is able to shrink wrap Ice cream tubs without any cardboard support. By inverting the tubs one up one down the Tubs form a stable group resulting in a solid pack after shrink wrapping.

Autopack welding bar type Shrink Wrappers can wrap up to 30 bundles per min, however the final packing speed depends on how quickly one can prepare the bundle before the wrapping process.

When packing cartons such as tooth paste, pharma tablets, soaps cakes etc, the collation is generally prepared by a vertical collator. In a typical vertical collator cartons accumulate on top of a lifting plate which elevates the cartons to higher level, where they are retained by suitable latches. The process is repeated until preset packing quantity is made after which the group is transferred into the sleeve shrink wrapper.

The speed of preparing the bundles is dependent on the maximum number of lifts the collator can make and the stacking format. A typical pneumatic collator can make approx 40 lifts / min.

So if we are packing 10 cartons in a 5x2 format (5 across and 2 high) we can make approximately 20 complete packs per min ( 200 cartons per min). However some cartons, due to their geometry, need to be packed 2x5. In this case the stacker has to lift 5 times to make one complete bundle which drops the speed to 8 packs per min.

To speed up the collating process Autopack have introduced a unique "Staircase" collator which can stack narrow and tall packs, much faster than traditional bottom up stacker. 

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