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:
Spout pouch flexibility distributors
What are the general forms of beverage and food liquid bags?
Sewing intensity of plastic packaging bags.aluminum foil bags for cooking manufacture
Popular recommendation
China Factory Baby Complementary Food Spout Pouch Baby Food Fruit Puree Bag With Spout Packaging Bag
Bag-In-Box
Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch
properties of flexible packaging films distributors
kraft spout pouch custom
stand up spout pouch distributors
juice bag in box custom
eco friendly spout pouches supplier
spout pouch machine maker
juice bag in box
What are the benefits of vacuum rice packaging?
Super Pouches: Revolutionizing Flexible Packaging for Top-Line Packaging Solutions
Compostable and Biodegradable Stand up Pouches -The Complete Guide
What are the interactions between the packaging material and the object to be packaged
Use more paper food packaging bags to take care of the environment.aluminum foil bag large manufactu
Liquid flat mouth filling bag
Juice Pouch Bags: The Ultimate Guide
Features and uses of textured vacuum bag
How much do you know about PE bag blowing film?properties of flexible packaging films distributors
Thermal insulation: the guardian of temperature
What does degradable plastic bag mean?
Three main reasons for poor transparency of transparent vacuum bags.vacuum sealer bags for food
Introduce the characteristics of anti-static aluminum foil bags.gusset aluminum foil bag
Different use plastic bags require different thickness.flexible pouch price
Knowledge of PE packaging bag materials that you are not aware of.properties of flexible packaging f
Why does the aluminum foil heat -stress -resistant strength is not good?aluminium spout pouch manufa
The characteristics and advantages of sterile bags for industrial concentrated fruit juice include t
Cake powder packaging bag.zip lock aluminum foil bag
Food safety is the bottom line of the food production and packaging industry.aluminium spout pouch d
Sterilization bag-sterilization packaging history.Flexible packaging film roll 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
