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:

125g 250g 500g 1kg Aluminum Foil Flat Bottom Coffee Bean Bags With Valve

clear spout pouch wholesale

eco friendly spout pouches wholesaler

How much do you know about PE bag blowing film?properties of flexible packaging films distributors

How to design a packaging bag according to the product?flexible packaging houston Vendor

Popular recommendation

Aluminum foil bag

Wholesale High Barrier Plastic Stand Up Flat Bottom Pet Dog Food Packaging Bag

Super pouch

smart food Snack food bag

bag in box packaging distributors

pouch with handle Solution

spout pouch packaging bags sales

bag in box packaging custom

box-in-box wholesaler

bag in box wholesaler

The convenience of coffee bags

coffee bag with one way valve distributors.The thickness of each layer of the composite packaging ba

ordering flexible packaging film roll price.Where can I find a manufacturer of high-quality food pac

Introduction to the relevant applications of plastic vacuum packaging bags.paper snack food bag manu

Use more paper food packaging bags to take care of the environment.aluminum foil bag large manufactu

Compostable and Biodegradable Stand up Pouches -The Complete Guide

Convenient choice: Environmentally friendly liquid portable bag

Why does the food packaging bag have a odor and how to avoid it?aluminum foil bags for cooking maker

How are the bags classified?

Kraft paper bags are easy to tear? It's just its material characteristics.kraft paper pouch bags man

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

How about the quality of degradable plastic bags? Is it really degradable?

How to use sterile bags.bag in box Vendor

How to Plan Bag in Box Printing.bag in box direct sales

The production process of liquid packaging bags.spout pouches

flexible packaging film properties Solution.Reasons and control measures for easy breakage of organ

mini Snack food bag Production.Learn about children's food packaging bags

What standards should food packaging bags meet.smart food Snack food bag Factory

Rapid Development of Composite Aluminum Foil Bag Industry

What are the requirements for making food packaging bags in general.petco free dog food bag wholesal

Share:

Email

Wechat Whatsapp

Leave Your Message