Blister lunch box:

The main principle of the process is to flatten the hard plastic sheet after heating and softening, and then use vacuum adsorption on the surface of the mold, cool it to form, and press the punch to form the finished product.

The advantages of blister technology are saving raw and auxiliary materials, light weight, convenient transportation, good sealing performance, and meeting the requirements of environmental protection and green packaging; it can package any special-shaped product, the packaged product is transparent and visible, and the appearance is beautiful, which is convenient for sales.

The packaging technology of blister boxes is relatively mature, and various blister dumpling trays are produced. The related technologies have achieved industrial application. In this kind of packaging process,Blister mainly involves the factors: blister, paper card, blister oil. The foam shell plays a role of sealing and fixing the object; the paper card supports the object, and the graphic information is printed at the same time to explain the product; the blister oil is firmly bonded to the paper card under the heating condition Together, ensure complete packaging during storage and transportation.

Injection lunch box:

The process principle is to melt the plastic material and then inject it into the film cavity. Once the molten plastic enters the mold, it is shaped into a certain shape according to the mold cavity. The resulting shape is often the final product. No further processing is required before the final product is used.

The advantage of the injection molding process is that the simple decoration of the product and the characters can be formed in one step of injection molding. These advantages are required for transparent, thin-walled products and high production rates.

Real environmentally friendly lunch box, the product has uniform color and texture, good feel and high strength; it does not emit odor when it is hot or cold; it is easy to recycle and use or environmental degradation; it is harmless to the ecological environment and human health and meets national food hygiene standards.

Some features of fake environmentally-friendly lunch boxes? The hand is soft and soft, and the powder will fall off when rubbed, and it will rupture as soon as it is torn, smelling acrid and squinting! Qualified products are heavier and cheaper; even if there are words such as "degradable lunch box", "environment-friendly lunch box", and "urban environmental protection" on the surface of the product, they are not necessarily environmentally friendly.

Identify that plastic lunch boxes are widely used in the market today. Paper lunch boxes and other materials are less used due to price and quality problems. So how do consumers identify disposable lunch boxes? Simply put, you can use the methods of one look, two touch, and three smells:

First of all, please check whether there is QS logo and serial number on the lunch box; secondly, also check whether the surface of the lunch box is smooth and clean, whether there are impurities or black spots. In general, transparent plastic lunch boxes are made of pure PP, which has a high safety factor; bright-colored lunch boxes may use waste plastic, so the darker the color, the less safe it is.

Second is to feel the strength of the lunch box. The lunch box produced using recycled waste or a large amount of industrial grade calcium carbonate and talcum powder is generally very weak, and it will break when you tear it lightly.

Then you must smell the odor of the lunch box. The qualified lunch box cannot smell. The characteristics of the "black lunch box" are summed up in six sentences: hands are soft and soft, tearing and breaking, smelling of pungent odor, easy to leak when deformed by heat, paraffin marks on hand folding, and sinking when shattered into water !! Just keep in mind that you can easily tell if a disposable lunch box is qualified.