Disposable lunch boxes are all plastic products, so it is best not to use them for a long time. Plastics are mostly made of polyvinyl chloride, which releases toxic substances when exposed to high temperature, and it is harmful to health with meals entering the body.
Disposable foamed plastic lunch boxes and plastic bags containing food seriously affect our health. When the temperature reaches 65℃, harmful substances in disposable foamed plastic tableware will penetrate into food, which will cause damage to human liver, kidney and central nervous system.
The disposable plastic snack box is made of polystyrene, which is a widely used polymer material. Because of its low toxicity, high melting point, strong plasticity and simple production, it has become an excellent material for making disposable lunch boxes with low price and disposable.
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How to distinguish the quality of disposable lunch boxes;
At first glance, it depends on whether there is QS logo and number on the lunch box; Secondly, it depends on whether the surface of the lunch box is smooth or not. Please keep this mark, whether there are impurities or black spots. Generally speaking, transparent plastic lunch boxes are made of pure polypropylene (PP), which has a high safety factor. The brightly colored lunch box may use waste plastic, so the darker the color, the less safe it is. It is understood that more and more regular hotels now choose the packing box of Lunch Box King, which adopts food-grade imported pp plastic without adding any additives to ensure health and environmental protection.
The second touch is to touch the strength of the lunch box. The lunch box produced by recycling waste or adding a lot of industrial-grade calcium carbonate and talcum powder is generally poor in strength and will break when it is torn lightly.
The third smell is to smell whether the lunch box has any peculiar smell, and the qualified lunch box can't smell it.
The characteristics of the "black lunch box" can be summed up as six jingles: soft hands, broken when gently torn, pungent smell, easy leakage when deformed by heat, paraffin marks when folded by hands, and sinking when shredded into water. As long as you remember the jingle above, you can easily distinguish whether the disposable lunch box is qualified and environmentally friendly.