Metal lunch box VS plastic lunch box

Advantages of metal lunch box packaging:

1. The metal lunch box printing can use a variety of new inks and advanced printing technology to make the printed surface have good gloss and more beautiful appearance; on the other hand, at the same price, the metal lunch box is more upscale than the plastic lunch box. Suitable for popular use. More importantly, the metal lunch box has good compatibility, easy processing, easy modeling, beautiful printing, suitable for storage, environmental protection and so on.

2. The packaging of metal lunch boxes is good-looking and high-end. In today's society, packaging boxes need to be beautiful and elegant, and products packed in metal lunch boxes can do well. It can protect things better than plastic lunch box packaging or glass frit lunch boxes, which is not possible with other packaging decorations. In addition, the metal lunch box is highly profitable for recycling, which can reduce the waste of packaging resources.

Advantages of plastic lunch box packaging:

The plastic lunch box is made of polyester (PET), polyethylene (PE), polypropylene (PP) as raw materials, and after adding the corresponding organic solvents, after high temperature heating, it is blow molded, extruded, or injection molded through a plastic mold Molded plastic container. Plastic bottles have the characteristics of not easily broken, low cost, high transparency, and food-grade raw materials. Plastic lunch box packaging products have some irreplaceable advantages such as light weight, good strength and toughness, good barrier properties, corrosion resistance, chemical inertness, and good molding and processing properties.

1) The plastic is small in density, light in weight, transparent or opaque, and easy to form

2) When processing, just change the mold to get different kinds of containers, which is easy to form mass production.

Disadvantages of metal lunch boxes

According to the chemical properties of iron, its chemical stability is relatively poor, especially steel materials are more prone to corrosion and affect the appearance of the metal lunch box. In terms of price, the packaging cost of metal lunch boxes is much higher than that of other plastic packaging. After all, the price of metal materials is relatively high in the market. Another disadvantage is that some acidic substances are not suitable for packaging in metal lunch boxes, because metals have weak acid and alkali resistance, so when we want to use metal lunch boxes, we need to use some inner coating to isolate and protect .

Disadvantages of plastic lunch boxes

1. Poor heat resistance. The heat transfer performance of plastic lunch boxes is far inferior to that of glass and metal materials. Generally, the highest heat resistance of plastic lunch boxes is about 100 degrees, and a few of them can reach more than 300 degrees.

2. The plastic lunch box has poor combustion resistance. Most plastics have poor combustion resistance and are flammable materials, which are not as good as natural inorganic materials. Among plastics, only polytetrafluoroethylene, rigid polyvinyl chloride, polyphenylene sulfide, etc. are classified as flame-retardant plastics.

3. The processing precision of the plastic lunch box is poor. In the process of plastic processing and use, due to factors such as shrinkage, expansion, creep and swelling, the dimensional accuracy of the product is poor, and it is not easy to form high-precision products.

4. Plastic lunch boxes are easy to age. Plastics are susceptible to the effects of light, heat, oxygen, ozone, and bacteria, so that the degradation reaction of the macromolecular chain occurs and its original performance is lost. This is commonly referred to as "aging".

Plastic lunch boxes can be effectively distinguished from plastic lunch boxes

    More and more lunch boxes begin to use tin-plated iron as raw materials. Compared with plastic lunch box packaging, the production process of metal lunch boxes is simpler and the material is more unique. Enterprises can design metal lunch boxes of different shapes according to different capacity, shape, product characteristics and other factors, so as to better meet the needs of customers. In view of the many advantages of metal boxes, many brands are vying to launch new metal lunch boxes, which are developing rapidly to seize the market.

   The metal lunch boxes on the market are carefully decorated with exquisite patterns, and they are compact and easy to carry. The metal lunch box design is fashionable and dynamic pattern style highlights the vitality of the brand, coupled with the animation cartoon pattern decoration makes it more fashionable and cute, more popular with children. The metal lunch box is green and environmentally friendly, and it can also store small items. The metal lunch box can be described as a combination of color and material, which makes it effective to distinguish it from other similar lunch boxes, allowing you to stand out on the shelf.

     Plastic lunch boxes are food-grade raw materials. Plastic boxes are recommended. If they are not food-grade, metal lunch boxes should be used. In addition, if you are loading food with food packaging, both packaging can be used! In fact, these two kinds of packaging utensils have their own advantages, but regarding frozen food, we suggest that everyone still chooses metal lunch boxes. The reason is that plastic boxes are not easy to freeze. The metal lunch box transfers heat faster. Metal lunch boxes are generally made of tin-plated iron, which has a smaller plastic thickness than plastic boxes. In contrast, metal lunch boxes conduct heat faster. Therefore, the frozen food in the metal lunch box is easy to freeze. Therefore, compared with other packaging materials, metal lunch box packaging can be more popular with our consumers!