Open bags and valve bags are commonly used packaging bags and often appear in people's daily lives. The following introduces the difference between open bag and valve bag packaging machine.
The packaged product is poured directly or put into a bag under the action of gravity, and then packaged with an industrial sewing machine. All kinds of shopping bags, convenience bags and woven bags that we often use can be called open bags.
As the name suggests, the valve bag packaging machine should have a "valve". The bottom half of the bag body is sewn, leaving the feed port (valve) for the machine to feed. The packaged products are loaded into the bag from the feed port under the action of pneumatic or mechanical power.
The valve bag is divided into an outer valve bag and an inner valve bag. The principle of the sealing method is to squeeze the contents out from the inside when the goods are full, and close the valve port to achieve the purpose of sealing. After the outer valve port is filled, it needs to be folded manually, and the inner valve bag is automatically sealed after the filling.
The bag opening process is different from the valve opening process and the applicable packaging products. The cost of valve bag packaging is higher, and the packaging machine is more expensive, but the weight is accurate and easy to stack. Because of the need for sealing, it saves a lot of human resources and improves production efficiency. In addition, valve bag packaging is more beautiful and invisible. Product image.
On the other hand, the technical content of open bag packaging is low, and the material needs to be resealed after filling, which requires a lot of labor costs. However, due to its low cost, it is also widely used in all walks of life. For different packaging bags, the packaging machines are also divided into valve bag packaging machines and open bag packaging machines.
The valve bag packaging machine is an automatic quantitative packaging machine designed for various powdery or ultra-fine powder materials, packaging materials with low density, strong air affinity, and good or bad muscle calcium ratio. It is mainly divided into: impeller packaging machine, spiral packaging machine, pneumatic packaging machine.
The bag-opening packaging machine is mainly used for quantitative automatic packaging of powder and granular materials. It is suitable for quantitative packaging of materials in food, feed, chemical, food and other industries. Usually equipped with packaging equipment.