Before talking about the packaging machine, first of all, we have to understand what is a valve bag and what is an open bag.

Both open and valve bags are popular packaging bags, often appear in people's daily life, today Kelei Machinery to introduce the difference between open and valve bags:

From the point of view of the bag itself, the open bag, is a straight cylinder, the bottom side of the bottom, the upper side is not sealed, the packaged products directly to dump or under the effect of gravity into the bag, using industrial sewing machine sewing and packing. We usually use a variety of shopping bags, convenience bags, woven bags can be called open pocket.

 

open pocket

 

Valve bag, as the name suggests, to have a "valve". The bag is sewn up and down, leaving a machine filling inlet (valve), packaging products in the pneumatic or mechanical power, from the filling port into the bag.

Valve pocket is divided into outer valve pocket and inner valve pocket, the principle of its sealing method is that when the goods filling is completed the contents will be squeezed from the inside to close the valve mouth, in order to achieve the purpose of sealing, the outer valve mouth in the material filling needs to be manually folded, the inner valve pocket in the material filling is automatically sealed.

 

阀口袋

 

The process of open pocket and valve pocket is different and the applicable packaging products are also different. Valve bag packaging cost is higher, the packaging machine is also more expensive, but weighing is very accurate, easy to stack, and because of the characteristics of the sealing again, saving a lot of human resources, so that the production is more efficient, in addition to the valve bag packaging is more beautiful, invariably also enhance the product image.

The open pocket packaging technology content is low, the material is filled with the need to seal again, need to pay a lot of labor costs, but because of its low cost, but also widely used in all walks of life.

For different bags, its packaging machine is naturally divided into valve pocket packaging machine and open pocket packaging machine.

Valve bag packaging machine is designed for a variety of small bulk density, air affinity, excellent or poor self-flow of fine powder or ultra-fine powder materials designed to become an automatic quantitative packaging machine. It is mainly divided into: impeller packaging machine, spiral packaging machine, pneumatic packaging machine.

 

 

Valve Pocket Packaging Machine

 

Open Bag Packing Machine is mainly used for quantitative and automatic packaging of powdery and granular materials, and is suitable for quantitative packaging of materials in the industries of grain, feed, chemical, food and so on. It is usually equipped with sealing equipment.

 

Open Bag Packaging Machine

 

The above is the valve pocket packaging machine and open pocket packaging machine some simple differences, shortcomings, welcome to correct and add!