EMAIL:
bruce@dajiangmachine.com
NEWS
Wenzhou Dajiang Vacuum Packing Machinery Co., Ltd.
19
2023
-
07
Teach you how to judge the quality of Vacuum packing bags
Author:
Vacuum packing bags are getting more and more attention in the plastic packaging market, and its position is growing. It is precisely because of its excellent packaging performance that it has been widely used, possessing strong functional characteristics such as oil resistance, moisture resistance, high temperature cooking resistance, low temperature freezing resistance, quality preservation and flavor preservation; It also has high barrier properties, which can block the infiltration of gases such as oxygen and water vapor; Moreover, its production cost is low, which can meet the automation and large-scale mass production of modern packaging processes; And many advantages such as safety, hygiene, and pollution-free. So do you know how to judge the quality of Vacuum packing bags?
First of all, we should observe whether the appearance of the Vacuum packing bag is complete. This is a basic step to check its quality. We should carefully check whether there are obvious scratches or pinholes on the appearance of the bag. If not, congratulations! This is a high-quality Vacuum packing bag.
Secondly, check whether the sealing of the Vacuum packing bag is firm and can meet the product packaging effect. It's actually very simple. We can put our hands in the bag and then forcefully tear it in the opposite direction. If the sealing of the Vacuum packing bag is not delaminated even if it is deformed during tearing, the sealing of the Vacuum packing bag is firm and is a qualified product.
It is also important to test whether the Vacuum packing bag has penetrated, including the oxygen permeability, water permeability, moisture permeability and other properties of the Vacuum packing bag. During the test, the coloring method can be used to put the colorant into the vacuum bag for sealing, and then place the vacuum bag horizontally on the filter paper. After a period of time, observe whether the filter paper is discolored. Repeat the test to ensure whether the permeability of the vacuum bag is up to standard.
Related news
Characteristics of OPP film composite bags
2023-07-19
MESSAGE
We will contact you within one working day. Please pay attention to your email.
Contact Us
WeChat/Whatsapp：+8618958702935
Mobile：+8618958702935
E-mail：bruce@dajiangmachine.com
Add：Room No.326, 1st Xin Yue Building, FeiXia South Road, Lucheng District, Wenzhou, ZheJiang, China