Look at the material
Generally speaking, the environmentally friendly plastic lunch boxes produced by manufacturers are classified into the following three categories according to the source of raw materials, production process, degradation method, and recycling level:
1. Biodegradable: such as paper packaging products (including paper pulp molding, cardboard coating), food powder molding, fiber material molding, etc.
2. Photo/biodegradable materials: photo/biodegradable plastic (non-polyurethane foam) type, such as photobiodegradable PP.
3. Easy to recycle and reuse materials: such as polypropylene (PP), high tear resistance polystyrene (HIPS), biaxially oriented polystyrene (BOPS), natural inorganic mineral filled polypropylene composite products, etc.
Comparison of takeaway boxes of different materials:
Environmentally friendly PP lunch boxes are transparent, odorless and non-toxic, they have good temperature resistance and can be heated in microwaves. They are generally the mainstream environmentally friendly lunch boxes on the market.
PET and PS takeaway boxes are all transparent, high-end, too soft, PET is not resistant to high temperatures, and PS has stronger light transmittance.
BOPS takeaway lunch boxes are different from ordinary takeaway lunch boxes in that they must be produced using an automatic plastic positive pressure thermoforming machine, and heating, forming, and film cutting are done at one time.
Companies that use PVC: There should be more packaging factories, gift companies, and gift factories.
Disposable lunch boxes made of PP material are non-toxic, tasteless, and odorless. The operating temperature is -6 degrees to +120 degrees, so they are particularly suitable for holding hot rice and hot dishes. They can be heated in a microwave oven or even steamed in a steam cabinet. The operating temperature of modified PP can be controlled at -18 degrees to +110 degrees. In addition to being heated to 100 degrees, the lunch boxes made of this PP can also be put in the refrigerator for refrigeration. In order to reduce costs, some disposable lunch box factories use PP to make PP blister lunch boxes and PS to make blister lids. The advantage is that the lid is transparent, and PS is harder and can be made of thinner sheets to reduce costs. However, consumers of this design must understand the difference between the two materials. Remember not to put the entire lunch box and the lid into the microwave for heating.
Generally speaking, there will be such a mark on the lid or bottom of the disposable lunch box. The "5" in the triangle and the "PP" below the triangle indicate that the product is made of polypropylene (PP) material. This material is safe and non-toxic. Most importantly, it has very good high temperature resistance and stable performance. It is a plastic material that can be put into the microwave. Lunch boxes made of this material can be reused after cleaning, but it is not recommended to reuse them. First, it is not easy to clean, and secondly, disposable products will soon break down after a long time. After all, good looks cannot be eaten.
