How to distinguish between recycled materials and new materials in packaging bags.recyclable spout pouches Vendor

The simplest way to distinguish between new and recycled materials is to look at the plastic film facing the sun to see if there are any stars on it. Some are usually recycled, while others are mostly new materials. (Because recycled materials have different colors, different tactile sensations, and many impurities, the color is not good, and the natural color is relatively few.)

From the appearance, recycled plastic has poor glossiness, dull particle surface, uneven size, and contains impurities. (Written by Xiongxian Yijin Packaging) generally has colors or appears gray white; The new material has good glossiness, smooth particle surface, uniform size, and does not contain magazines, mostly appearing colorless or milky white. The new material has a bright color, while the old material has a dull color. In addition, if we need to carefully identify, we can distinguish from the following 7 aspects:

1. Color: Anything that is transparent is better than something that is opaque, regardless of the color.

2. Gloss: A good gloss is better than a lack of gloss, which is the color of the material surface.

From the perspective of physical and mechanical properties, recycled materials are made from waste products. After being exposed to wind and sun, the plastic surface has aged and degraded, and after multiple high-temperature processing and melting plasticization, under the action of light, oxygen, and high temperature, some high polymers are oxidized, and the macromolecular chains undergo chain breaking degradation, resulting in a decrease in physical and mechanical properties. The more regeneration times, the more severe the performance degradation

3. Wire drawing: (If there is too much wire drawing in CaC03, it is definitely not good, and even if it is reinforced, it cannot be pulled out.) After blowing out the fire, use an iron object to quickly contact the melt body, and then quickly pull it out to see if the wire formation is uniform. If it is uniform, it is a good material. After pulling a few times, overlap the wire and pull it out again to see if it has elasticity. Can it be pulled out again and continuously? If it is not broken or if it breaks after a distance, it is a good material.

4. Ignite (observe whether the flame color emits smoke, whether it contains off fire combustion or does not ignite at all);

5. Smell the odor (various plastic odors are different, including flame retardants, etc.);

6. If the above cannot be confirmed, please use fire again. During the combustion process, black smoke or rapid dripping of the melt may occur, which is not a good material.

7. Floating water: As long as there is submerged water, it is poor. If you are not sure about the above or cannot make up your mind, then you only need to test the machine.

Read recommendations:

Custom printed food grade ziplock snack custom plastic pouch packaging food packing bag

biodegradable spout pouches

spout pouch bags maker

Anti -static packaging bag.aluminum foil bags for cooking

Do you need to pay attention to the shelf life of food packaging bags?custom snack food bags