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:

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

clear spout pouch custom

spout pouch bag supplier

A detailed introduction to food packaging bags

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

Popular recommendation

Pouch with handle

China Factory Baby Complementary Food Spout Pouch Baby Food Fruit Puree Bag With Spout Packaging Bag

Custom Laminated Printing Juice Bag Liquid Packaging Stand Up Plastic Water Spout Pouch

smart spout pouch maker

eco friendly spout pouches price

eco friendly spout pouches Production

bag in box manufacture

spout pouch packaging

bag in box packaging supplier

super pouch tool bag Factory

The Versatility of Bag-in-Bag Liquid Packing Products and Filling Machines

How to inspect the appearance of vacuum bag?

Let's learn about upright bags

Human care in food packaging

sideguesst bag for coffee bag distributors.The number of packaging layers of moon cakes and Zongzi s

The vacuum packaging bag could not be sealed because of this

The source factory of packaging bags takes you to understand the three side sealing bags and the mid

Tell you how to distinguish the material of the vacuum packaging bag

Introduction to the functions of liquid packaging bags

Requirements for fertilizer packaging bags.

pet food bag totes custom.The rate of broken composite packaging bags remains high

Do you know the tips to use plastic bags?Flexible packaging film roll Manufacturing

What are the performance requirements of paper plastic composite bags?aluminum foil bag roll manufac

The material characteristics of the food packaging bag you don't know.stand up pouches for food pack

What questions do customers often ask about vacuum bags

Powder packaging bag.Pouch with handle wholesale

Classification of bags

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

Various problems about aluminum -plastic bags, such as heating?

Before printing on soft packaging, determine the types and usage methods of water-based ink additive

Share:

Email

Wechat Whatsapp

Leave Your Message