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:

BIB Bag-in-box dispenser with butterfly valve vitop for drinking water wine juice

kraft paper spout pouch

spout pouch machine maker

Material of liquid bag

Snack food bag bulk wholesaler.Detailed analysis of food packaging bags

Popular recommendation

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

Hot Sale BPA Free Plastic Drink Juice Fruit Liquid Packaging Stand Up Bag Spout Pouch

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

bag in box wine Solution

spout pouch packaging bags distributors

spout pouch packaging sales

eco friendly spout pouches

spout pouches Vendor

packaging spout pouch company

bag in box wine supplier

Type of bag

What are the ingredients of raw materials for the production of degradable plastic bags?

What are the advantages of plastic packaging bags

The vacuum packaging bag could not be sealed because of this

Common frozen food packaging materials.smart food Snack food bag

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

Analyze the composition of plastic packaging bags

What are the advantages of octagonal sealed packaging bags

Will liquor vacuum bags affect the wine?

How did the bag pattern come from?

Is there any attractiveness of the eight -sided seal packing cat food bags?petco free dog food bag P

The production process of plastic vest bag.bag in box packaging Manufacturing

What problems should be paid attention to in the high barrier test of water vapor transmittance and

The selection of vacuum bag manufacturers is particularly important.food vacuum bag

What are the advantages of pet food packaging bags?petco free dog food bag manufacture

Soluble environmentally friendly plastic packaging bag.packaging kraft paper pouch bag

pouch with spout Factory.What hazards do unqualified food packaging bags bring

Why do DOG Food Bag pursue materials?petco free dog food bag Manufacturing

What are the advantages of sterile packaging bags.retort pouch specification

What does degradable plastic bag mean?

Share:

Email

Wechat Whatsapp

Leave Your Message