Nowadays, environmental protection issues have already attracted our attention, and environmental awareness has been deeply rooted in people’s hearts. People are now living an environmentally friendly and green life. They are very concerned about the products commonly used in life. Many people are very concerned about stretch film as a packaging material. Safety, today ’s stretch film manufacturers teach you how to detect the presence of harmful substances in stretch films:
First, we can take some stretched film, clamp it with an alcohol lamp with tweezers to ignite it, and then extinguish it; secondly, we can look at the difficulty of extinguishing, the condition after the fire, the flame and smoke, the scene when extinguishing, and the breath of recovery, etc. It can be known what kind of plastic is by comprehensive judgment, and the stretched film is mainly made of polypropylene plastic, polyethylene plastic, and polyvinyl chloride material.
If it is polypropylene plastic: combustible, fire after fire, the flame and smoke color is orange yellow, when burning, there is a continuous drop of dissolved substances, and there is a smell of petroleum.
If it is polyethylene plastic: combustible, fire after fire, flame and smoke bottom blue yellow, when burning, there is a continuous drop of molten material, recover the paraffin breath.
If it is PVC plastic: non-flammable, extinguish from fire, flame and smoke are green at the bottom, yellow at the tip, and there is a soothing smell of hydrochloric acid after the fire.
Through the above method, you can detect whether the stretched film has harmful substances, and observe the color change to see which substance remains in the stretched film.
After reading, do you have a deeper understanding of the sealing tape? The use of sealing tape not only saves costs, but also guarantees the safety of the user in use. It avoids the situation that the old-fashioned packaging scratches people. The use of sealing tape in function, the sealing tape has a more stable sealing. It is currently the preferred material for packaging. The sealing tape is not only beautiful in appearance, but also attached to the surface of the packaging box in a way that the thickness is almost zero. Okay, I ’m here. Thank you for watching!
Shenzhen World Packing Industrial Ltd
Stretch Film & Packing Tape Specialist , Top China manufacturer
Contact us & let’s make Win-Win business, always stable quality stretch film, save you time & cost. : )