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:

PET food bag

spout pouch bag company

refillable spout pouches Solution

Analyze the composition of plastic packaging bags

paper snack food bag wholesale.Briefly introduce food packaging bags

Popular recommendation

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

Coffee & Tea pouch

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

juice bag in box wholesale

pouch with handle supplier

Flexible packaging film roll sales

aluminium coffee bag sales

packaging spout pouch manufacturer

tea pouch packing machine price

Flexible Packaging Film Factory

How to use the air hole on the coffee bag

Environmental protection of coffee bags

Take you to analyze the wrinkle phenomenon in the zipper bag

If you don't know how to identify the vacuum packaging bag, come and see.vacuum zipper bags for clot

Can the vacuum bag be reused?

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

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

What are the liquid packaging methods?

What is the function of the hole on the coffee bag

Causes and solutions for the difficulty of aluminum foil bags.aluminum foil bag large Production

Development Trend of Liquid Box Bag Industry

What are the bag materials

The use of active box in bag packaging technology will become a trend.gusset aluminum foil bag

Market prospect and advantages of heat shrinkable bags

Characteristics of food composite bags.printed snack food bags custom

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

And there are already four types of uses for high-temperature cooking bags alone

Do you know what a facial mask bag is?

Why can aluminum foil food packaging bags develop so quickly?

The characteristics of the characteristics of all kinds of packaging bags.Flexible packaging film ro

Share:

Email

Wechat Whatsapp

Leave Your Message