Shrinkage machine of the three main ways of packaging
Posted by afripacker on July 18th, 2019
According to different packaging methods, shrinkage machine can be roughly divided into the following three packaging forms:Two ends open, four sides sealed and one end open these three packaging methods to complete the product packaging.So, what are the working principles of these packaging methods and what are their characteristics? Let's take a look. It uses cylindrical film or flat film to wrap the package in a sleeve before thermal shrinkage. After packaging, there is a contraction port at both ends of the vacuum packaging machine.The following are the three packaging methods of our shrink machine divided into three parts to give you a detailed description.
Shrinkage machine at both ends of the open packaging: when the use of cylindrical film, the opening of the film will be the first open, and then with the help of the slider will be pushed into the film, and then cut off the film.This method is suitable for wrapping cylindrical objects, such as batteries, paper rolls, bottles and cans. The advantage of cylinder film packaging is to reduce the process of sealing seam, beautiful appearance, the disadvantage is that it can not adapt to the requirements of product diversification, only suitable for the mass production of a single product.Use flat film to wrap things, useful single flat film and double flat film wrapped in two ways.The film should be wider than the article. Double flat film is used, that is, the upper and lower two films are wrapped, and the two films are sealed at the same time when the former package is finished sealing and cutting, then put the product into the upright thin film by machine or hand, fall in place after the seal cutting mechanism, the product of another side sealing and cutting, film wrapping package products after thermal shrinkage, shrinkage forming oval openings on both ends of the tea bag packing machine, when using a single zhang ping membrane, flat membrane, the first will be on the flat membrane wrapping package products sent to central, form a horseshoe wrapping package, sealing and heat sealing lap joint.
Shrink machine of all around seal type pack a way: the product all around with flat film or canister film wrap up, seam uses lap joint type seal. Used for packing products that require sealing.With folded film can be used l-type sealing method, the use of drum folded film, the film will be pulled out of a certain length in a horizontal position, mechanical or manual will open the end of the opening, push the product to the crevice.Pillow bag can be used for pure water packing film with single flat film. This method is to use a single zhang ping film, seal longitudinal seam into a cylinder first, push the product into it, and then seal transverse seam cut into pillow type packaging or the two ends of the card into a tube-type packaging. With double flat film sealing type packaging and open at both ends similar, only need to be equipped with both sides of the machine sealing device can be completed.Wrap with canister film, need to cut in canister film to undertake sealing only at the same time, puncture hole, undertake heat contraction next. There is often a needle next to the sealing device. When the needle is hot sealing, it pricks out the vent hole on the film, and the small hole often closes by itself after the thermal shrinkage.
One end of the shrinkage machine open packaging: paste filling machine is a typical example, the first film into a large bag with square bottom, and then the large bag from top to bottom on the stacked goods pallet, and then thermal shrinkage. Put the pallet loaded with the product on the conveyor belt and cover it with a shrink film bag;From the conveyor belt into the thermal contraction channel, through the thermal contraction channel after the completion of contraction packaging. Its main characteristic is the product can be bound up firmly with unit of certain amount, won't loose in carriage process, can pile up in open air.
