Top-line packagingTel: +86 188 2689 9458

Top-line packagingEmail: info@toplinepackaging.com

Top-line packaging
Top-line packaging
Top-line packaging
Top-line packaging Home  >  NEWS  >  Industry News

How to inspect the appearance of vacuum bag?

source:Industry News release time:2022-11-11 Hits:    

  Vacuum zipper bag

  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:

Bag-In-Box

spout pouch bags supplier

biodegradable spout pouches custom

bag for food packaging.What are the application scope of composite packaging bags

8 structural types of commonly used films

Popular recommendation

Laminated Aluminum Foil Zip Lock Bag Stand Up Pouch /Matt White Foil Pouch /Zip Lock Coffee Bag

Smell Proof Stand Up Flat Bottom Pouch Coffee Bag /Coffee Beans Bag With Air Release Valve And Reusa

Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch

spout pouch machine Manufacturing

pet food bag clip

spout pouch serves supplier

spout pouch bag supplier

eco friendly spout pouches manufacture

coffee grinds pouches supplier

eco friendly spout pouches Vendor

Introduction to packaging methods for containerized liquids

Characteristics of food composite bags.flexible packaging film roll pouches Solution

Customized packaging bags according to product characteristics

liquid pouch with spout Factory.Introduce the materials of food packaging bags

Bag-in-Box with Tap: The Innovative Solution for Efficient Liquid Packaging

Method of using electrostatic adsorption for thermal shrinkage of plastic packaging.Vacuum zipper ba

What are the packaging forms for beverages and liquid food?

What are the composition of plastic bags?coffee packaging plastic bag wholesale

What are the interactions between the packaging material and the object to be packaged

The common problems of self -standing bags are here, the solutions are here

The necessity of using anti -fog packaging bags for vegetables.aluminium spout pouch Manufacturing

How to remove the air from the bag?

Antique advertising bag.Aluminum foil bag maker

The requirements for food packaging to Vacuum Zipper Bag.smart food Snack food bag

pet food bag sealer Manufacturing.Snack food bag bulk Manufacturing.Food packaging bags can play a g

Do you know the packaging method of the bags in the box.bag in box packaging

What types of packaging bags can be classified according to bag type

Common Materials for Inflatable Packaging

Bag in Box.bag in box company

Suitable plastic packaging bag.stand up coffee packaging

Share:

Email

Wechat Whatsapp

Leave Your Message