Packing belt loose phenomenon is because the joint is not accurate, resulting in the friction plate tilt, so that packaging is not strong, resulting in a smaller friction area. And after the packaging is finished, to wait until the pallet back to move the goods, otherwise it will affect the product's firmness. There is also because the friction parts of the Packer is not set up, at the interface at the time of the adhesion, the temperature is too high or not high enough, are easy to lead to not strong, so that the packing belt appears loose phenomenon.