What's the materials used in packaging bag sealing?
    
      In age-old times small cloth pieces or even jute threads were used for tying the mouth of a cloth or jute bag. Nowadays even the cloth and jute bags are sealed perfectly using nylon or cotton threads which are so thin but strong. For example, in a sugar factory, sugar is packed in large jute bags and the bag sealer uses either nylon or cotton threads to seal the bags. The sealing process is very similar to the working of a sewing machine. But the methods used for sealing plastic and paper bags are different.
   
      Till a few decades ago cement was packed in plastic bags. The disposal of the plastic bags became a problem. So high quality strong paper bags were introduced for packing cement. Here again, the need for the bag sealer to seal these cement paper bags became a necessity. Paper bags cannot be sealed using the methods adopted for sealing jute and cloth bags. Cement of a particular quantity is weighed and filled in the paper bags. The bags are closed automatically and the bag sealer simultaneously applies the quick setting glue and a drier is used to dry the glue immediately.

Impulse:- Impulse heat bag sealers are very popular. Impulse heat sealers use a stationary heated element. An Impulse sealer is a system, usually found on a "Bottom weld" machine. This type of machine uses two sealing elements, an upper and lower which fuse the material from both sides at the same time. The purpose of "Impulse sealing" is to improve the bounding of the two layers of film. This gives a faster and better seal for thicker or hard to seal material. Ideal for small to medium scale use. Heat sealing can be adopted for sealing plastic and polythene bags. Impulse sealers come in different models and with added accessories. Some of them even have electronic controls that can be used to adjust the heat required to seal bags made from particular materials. The use of electronic circuits helps to ensure long life and keep operating costs to the minimum. The hand-operated model is enough for small home industries but the foot pedal operated model helps to make bag sealing faster. The foot pedal operated model frees both hands to manage both the package and the product. The automatic Bag sealers have options that help to control the sealing time and the sealing interval. Such models are mainly used in industries with a wide range of products and very high production.

Continuous:- Continuous heat sealers utilize heated moving belts. Ideal for large volume use.