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:
Wholesale Price Biodegradable Aluminum 3 Three Side Seal High Temperature Microwavable Food Retort S
Popular recommendation
Custom Laminated Printing Juice Bag Liquid Packaging Stand Up Plastic Water Spout Pouch
Wholesale High Barrier Plastic Stand Up Flat Bottom Pet Dog Food Packaging Bag
Custom printed food grade ziplock snack custom plastic pouch packaging food packing bag
kraft paper spout pouch wholesaler
smart food Snack food bag manufacturer
spout pouch packaging bags
pouch flexible packaging Factory
spout pouch bags supplier
biodegradable spout pouches wholesale
aluminium spout pouch manufacturer
Do you know all the things in the Bag-in-box?
Hitting the pain points of gift box packaging directly, three simple points make packaging customiza
Use more paper food packaging bags to take care of the environment.aluminum foil bag large manufactu
stand up pouch with spout packaging Factory.Classification and material of packaging bags
Composition of liquid bags
Coffee bags and coffee
There will be several "small holes" on the top of the coffee pouch bags, so what is the my
Thermal insulation: the guardian of temperature
Optimizing Liquid Packaging Bag Production for Efficiency and Quality
How to customize the packaging bag
How to classify and differentiate composite food bags.smart food Snack food bag wholesale
What material is good for vacuum Vacuum Zipper Bag?zipper vacuum sealer bag
What materials should be used for tea bags
What is the bag in the BIB box
What problems should be paid attention to in the high barrier test of water vapor transmittance and
Introduction to Color Printing Composite Packaging Materials.bag in box packaging manufacturer
You must want to know how to detect common composite bags.biodegradable clear mailing bags Vendor
Food packaging bag should be used correctly.Snack food bag bulk
Packaging bags for different purposes require different manufacturing processes.zip lock aluminum fo
Clear Spout Pouch's characteristics and performance functions.spout pouch packaging bags wholesaler
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
