Top-line packagingTel: +86 188 2689 9458

Top-line packagingEmail: info@toplinepackaging.com

Top-line packaging
Top-line packaging

Food safety testing methods for liquid packaging bags.digital flexible packaging

source:other news release time:2023-08-23 Hits:    


Liquid packaging bags not only require a beautiful appearance and convenience to carry, but more importantly, they need to improve quality to ensure food reliability. This puts forward higher requirements for the functionality of food packaging materials themselves, whether they are green and environmentally friendly, and the production process. So how do you determine whether liquid packaging bags are reliable? Let's take a look together.

1、 Fire detection method: Non toxic polyethylene plastic bags are flammable, with a blue flame and a yellow upper end. When burned, they drip like candle tears, have a wax smell, and emit less smoke; Toxic polyvinyl chloride plastic bags are non flammable and extinguish when left on fire. The flame is yellow and the bottom is green. They can soften and stretch, announcing the irritating taste of hydrochloric acid.

2、 Vibration detection method: Grasp one end of the plastic bag with your hand and shake it vigorously, declaring that the person with a loud sound is non-toxic; Those with dull and astringent voices are toxic.

3、 Water testing method: Place plastic bags in water and press them into the bottom. Non toxic plastic bags have a small specific gravity and can surface, while toxic plastic bags have a large proportion and sink.

4、 Sensory testing method: Non toxic plastic bags are milky white, semi transparent, or colorless and transparent, with flexibility, a smooth feeling when touched, and a waxy appearance; Toxic plastic bags have a cloudy or light yellow color and a sticky feel.

Nowadays, the plastic food bags we use in daily life mainly include polyester, polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc. Among them, polyethylene and polypropylene are reliable plastics that can be used to hold food. Most PVC plastic bags are toxic and cannot be used to pack food. Due to the toxicity of the unpolymerized vinyl chloride monomer in polyvinyl chloride resin to the human body. Moreover, during the process of processing polyvinyl chloride resin into plastic bags, toxic auxiliary materials such as plasticizers and pigments are also involved. The main component of plastic stabilizers is lead stearate, which is also toxic. This type of lead salt is easily distinguishable, and once it enters the human body, it can form stored lead poisoning.


Read recommendations:

Kraft paper pouch

spout pouch machine maker

kraft paper spout pouch custom

Different products have different standard requirements for composite packaging.stand up coffee pouc

The manufacturer distinguishes between high-temperature vacuum bags and frozen vacuum bags for you.v

Popular recommendation

Bag-In-Box

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

Custom Special Shaped Super Pouch Aluminum Foil 1.5L 3L 5L Stand Up Drink Juice Liquid Pouch With Va

pouch flexible packaging custom

spout pouch bag company

bag in box wine supplier

coffee grinds pouches Solution

flexible packaging manufacturer

biodegradable spout pouches custom

biodegradable spout pouches Solution

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

Classification and material of packaging bags

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

In what areas is the bag-in-box industry used?

Pure Source: High quality liquid sealed packaging bag.juice bag in box wholesaler

Do you know these characteristics of the bag in the box?

Food packaging bag.plastic pouches for food packaging

Let's learn about upright bags

How to distinguish the quality of OPP card head plastic bag?

The vacuum packaging bag could not be sealed because of this

Production environment for sterile bags

What are some issues to pay attention to when customizing food packaging bags?

Bag in box wine has more advantages than traditional bottled wine.bag in box wholesaler

Explanation on Flexible Packaging.flexible packaging supplier

Introduction to the characteristics of plastic bags

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

The material characteristics of the food packaging bag you don't know.printed snack food bags sales

Prospect Analysis of Aluminum Foil Ton Bag Industry.aluminum foil bags for grilling

Applied Materials of composite packaging bags.juice bag in box

Discussion on the Use of Fruit Juice Bags in Beverage Packaging.valve plastic coffee bag

Share:

Email

Wechat Whatsapp

Leave Your Message