Views:1 Author:Site Editor Publish Time: 2018-11-07 Origin:Site
Stand up pouches are a kind of soft bag with horizontal support structure at the bottom. It can stand on its own without any support and whether it is opened or not.. Stand up pouches are a relatively new packaging form, which has advantages in improving product grade, enhancing shelf visual effect, portable, convenient use, fresh-keeping and sealing, etc. The Stand up pouches are laminated by PET/foil/PET/PE structure. It can also be made of two or three layers of other specifications. It can increase the oxygen-insulating protective layer according to the different packaging products, reduce the oxygen permeability and prolong the shelf life of the products.
1. Ordinary self stand up pouches
Also known as side sealed upright bag, is a kind of packaging that can not be renewed after opening. This stand up pouch is commonly used in the industrial products industry.
2. Stand up pouches with suction nozzle
The stand up pouch with suction nozzle is more convenient to dump or absorb contents, and can be re-closed and re-opened. It can be considered as the combination of self-supporting bag and ordinary bottle mouth. This stand up pouch is generally used in daily necessities packaging. It is used to hold liquids, colloids and semi-solid products such as beverages, shower gels, shampoos, tomato sauce, edible oil, jelly, etc., such as the famous Xizhilong CiCi CiCi, etc.
3.Stand up pouches with zipper
Stand up pouches with zippers can also be re-sealed and re-opened. Because zippers are not closed and their sealing strength is limited, they are not suitable for encapsulating liquids and volatile substances. According to the different ways of sealing, it can be divided into four and three sides. Four edges refer to a layer of common edge besides zipper seal when the product packaging is out of the factory. When using, the common edge should be torn open first, and then the zipper can be used to realize repeated sealing. This method solves the shortcoming that the strength of zipper edge seal is not good for transportation. The three edge is directly zipped and sealed as a seal, usually used for light products. Stand up pouches with zippers are generally used to pack light solids, such as candy, biscuits, jelly, etc. But stand up pouches with four sides can also be used to pack heavy products such as rice and cat litter.
4. Stand up pouches with zipper
The mouth like stand up pouches combine the convenience of the upright bag with suction nozzle and the cheap price of the ordinary upright bag. That is, the function of the suction nozzle can be realized through the shape of the bag itself. However, the mouth-like stand up pouches can not be sealed repeatedly, so it is generally used in the packaging of disposable liquid, colloid and semi-solid products such as beverages and jelly.
5. Special-shaped self- stand up pouches
That is to say, according to the packaging needs, new stand up pouches of various shapes are produced by changing the traditional bags, such as waist-closing design, bottom deformation design, handheld design, etc. At present, the main direction of value-added development of stand up pouches With the progress of society and the improvement of people's aesthetic level, as well as the intensification of competition in various industries, the design and printing of stand up pouches have become more and more colorful, with more and more manifestations. The development of special-shaped self- stand up pouches have gradually replaced the traditional self-supporting bags.
Generally speaking, there are many problems in the actual production of stand up pouches, but there are two main outstanding problems: one is leaking liquid or air when filling commodities; the other is uneven bag shape and asymmetric bottom seal in the process of bag making. Therefore, how to make a good choice of materials and adopt the best technological operation mode plays a decisive role in improving the overall quality of vertical bags.