Tel: +86 188 2689 9458
Tel: +86 188 2689 9458
source:Industry News release time:2022-11-11 Hits:
Visual inspection of appearance includes inspection of flatness and transparency of vacuum bag. It is mainly used to detect whether there are obvious scratches and pinholes on the surface, and whether there is pollution at the seal. The appearance inspection methods are as follows:
1: Vacuum bag surface wiredrawing "inspection. Place the vacuum packaging bag in the center of your hand, aim at the 40w fluorescent lamp, and gently shake it. Through the reflected light on the surface of the composite bag, you can clearly find whether there are scratches or marks on the surface of the vacuum packaging bag, which is often called "bag surface wiredrawing" in the industry. The wire drawing phenomenon is mostly caused by the unclean traction guide roller of the bag making machine, so it must be ensured that the guide roller is clean. In addition, if the guide roller does not rotate, it will also cause drawing failure of the vacuum packaging bag.
2: Check the flatness of the vacuum bag. Place the vacuum bag on a flat table. If the surface is bent, warped outwards or arched inwards, the flatness is poor,
Otherwise, it indicates good flatness. The reasons for poor flatness are generally as follows: high bag making temperature has damaged the stress stiffness of the inner layer of the composite bag; Unreasonable structure composition; The material itself is uneven in thickness.
3: Check the transparency of the vacuum bag. Transparency is particularly important for some products because there is no pattern on a large area. The transparency test method is: take a finished bag and observe it through the indoor indirect light source. If there are "pockmarks", "rings", "fog" and other phenomena in the blank, it indicates poor transparency, otherwise it indicates good transparency.
Read recommendations:
Custom Portable Reusable Drink Bags Stand Up Plastic Spout Pouches For Beverages Liquid Packaging
eco friendly spout pouches wholesaler
Spout pouch flexibility supplier
Causes and solutions for the difficulty of aluminum foil bags.aluminum foil bag large Production
Popular recommendation
PET food bag
Smell Proof Stand Up Flat Bottom Pouch Coffee Bag /Coffee Beans Bag With Air Release Valve And Reusa
Hot Sale BPA Free Plastic Drink Juice Fruit Liquid Packaging Stand Up Bag Spout Pouch
aluminium spout pouch sales
sunbean beaten coffee pouch
bag in box packaging custom
spout pouch machine distributors
wine bag in box Vendor
flexible packaging manufacture
clear spout pouch sales
How to correctly choose plastic bags for food? Teach you a few tricks
What should be paid attention to in the customized production of rice packaging bags.super pouch too
aluminium spout pouch Factory.Lightweight heat preservation, Spout pouch accompanying
What are the general forms of beverage and food liquid bags?
The printing principle of composite bags.eco friendly spout pouches custom
How to determine whether the food packaging bag is regular?
Development history of vacuum bag technology
How to choose pet food packaging bags?
Different products have different standard requirements for composite packaging.stand up coffee pouc
coffee bag with one way valve distributors.The thickness of each layer of the composite packaging ba
How to build a packaging bag brand?
Clear Spout Pouch is widely used in the daily chemical industry.stand up pouch with spout packaging
North India's cowhide paper bag customization allows you to worry about it
Functions of packaging bags
Food safety is the bottom line of the food production and packaging industry.aluminium spout pouch d
Introduction to the performance advantages and usage range of self-supporting packaging bags
What are the common bag types of food packaging bags
Six Standards that Vacuum Packaging Bag Suppliers Should Adhere to.Vacuum zipper bag company
Main analysis points of the current situation analysis report on the aluminum foil ton bag industry
How to judge the quality of liquid packaging bags?produce trays and packaging
Subscribe to Top-line emails and
stay updated on our news.
+86 188 2689 9458Email: info@toplinepackaging.com
Add: Room 204-205 ,Buliding 2 ,No 7 xinji Road,Nancheng street ,Dongguan City ,Guangdong province,China
Download Catalogs
Wechat
Whatsapp
