Disposable fast food boxes have been changed from foam lunch boxes to environmentally friendly lunch boxes. The original foam lunch boxes were eliminated due to the high temperature resistance and the environmental damage caused by the manufacturing process. Plastic lunch boxes, paper lunch boxes, wooden lunch boxes, and degradable lunch boxes and many more. Among them, plastic has the characteristics of low toxicity, high melting point, strong plasticity, simple production and relatively low cost, so it has become the mainstream material for manufacturing disposable fast food boxes.
PP polypropylene, with mechanical and thermal properties, is suitable for food packaging. Meal boxes are divided into environmentally friendly lunch boxes, mainly plastic, paper, starch and rare metals.
Plastic type disposable snack box:
Disposable lunch boxes made of plastic are mainly PP polypropylene and PS polystyrene. They are non-toxic, tasteless and odorless. PP is relatively soft. Generally, the temperature of PP is -6 degrees to +120 degrees, so it is special It is suitable for holding hot meals and hot dishes. It can be heated in a microwave oven or even cooked in a steam cabinet. The use temperature of modified PP can be controlled from -18 degrees to +110 degrees. The lunch box made of this PP can be heated in addition to It can be stored in the refrigerator to be used for refrigerating after being used up to 100 degrees.
PS is hard and transparent, but it is easy to tear. PS starts to soften when the use temperature reaches 75 degrees, so it is not suitable for holding hot meals and hot dishes, but PS has good low temperature performance and is the best packaging material for ice cream.
In order to reduce costs, some lunch box factories use PP as the box and PS as the lid. The advantage is that the lid is transparent and the PS is harder. It can be made of thinner materials to reduce costs, but consumers of this design must understand the two materials The difference, do n’t put the whole box of lunch together with the lid and heat it in the microwave.
Cardboard disposable fast food box
The cardboard snack box is made of 300-350 grams of bleached sulfate wood pulp cardboard as a raw material, and is made by die-cutting bonding, die-cutting, pressing and shaping through a stamping process similar to sheet metal processing. In order to prevent oil or water seepage, it is necessary to apply a chemical additive to the surface of the film. In the process of production and use, it is non-toxic and has no side effects on the human body. However, the quality of the paperboard is higher, and the cost is also increased.
Starch type disposable snack box
An edible fast-food box made of starch, as the name implies, it is made of starch plants as raw materials, added with dietary fiber and other edible additives and stirred and kneaded. It uses biological compounding, glycan cross-linking, calcium It is refined by ion chelation and other technologies, and the use temperature is -10 degrees to +120 degrees, so it is particularly suitable for holding hot meals and hot dishes. It can be heated in a microwave oven, and it can also be placed in the refrigerator for refrigeration.
Pulp molded disposable snack box
Wood pulp or reed, bagasse, wheat straw, straw and other annual herbaceous plant fiber pulps are crushed and purified, added with appropriate amounts of non-toxic chemical additives, and formed by drying, shaping, shaping, trimming, and disinfection. The beauty of the product is not high, and it will also increase the pollution of wastewater.
Vegetable fiber type disposable snack box
In terms of environmental protection advantages, the plant fiber lunch box has obvious advantages. It uses plant fibers extracted from straw, rice hulls, bagasse, etc. as raw materials, and adds molding agents, adhesives, water resistance agents and other additives to stir and form through the molding machine. It is processed by post-processing such as drying, shaping and disinfection. These agricultural wastes can become industrial raw materials and contribute to the comprehensive utilization of agricultural resources.
Degradable plastic disposable fast food box
The raw materials for the manufacture of such lunch boxes are degradable plastics. The so-called degradable plastics add a certain amount of additives, such as photosensitizer, starch, etc., to the plastic production process. In this way, degradable plastic products are used up and discarded in After being exposed to nature for three months, it can be decomposed into fragments by its complete shape, thus improving the environment.
Bio-degradable disposable fast food box
The biodegradable lunch box is a relatively advanced environmental protection product.
It uses starch as the main raw material, adds annual plant fiber powder and special additives, and undergoes chemical and physical treatment to make a biodegradable snack box. Because starch is a biodegradable natural polymer, it is decomposed into glucose under the action of microorganisms, and finally into water and carbon dioxide.
In addition, the material blended with it is also a fully degradable material, so it can be said that it has no impact on the environment.
The main source of raw material starch production can be corn, potatoes, sweet potatoes, cassava and other annual plants.
Naturally, most of the raw materials for biodegradable production are food crops, which can completely replace the foam lunch box without any pollution to the environment.