What is the material of disposable transparent lunch box
What is the material of disposable transparent lunch box, health is the most influential factor to a person, because health is the foundation of life, so the most important thing to us is health, don't neglect our health, without health there is nothing. The following share disposable transparent lunch box is what material?
Disposable transparent lunch box is what material 1Currently transparent plastic tableware materials are mainly polypropylene PP, polystyrene PS and high-density polyethylene HDPE, from the cost considerations, PS is cheaper, PP is more expensive, from the point of view of safety considerations, PS decomposition will produce toxic substances, PP and HDPE will not be from the aspect of strength considerations, PS is brittle, HDPE is soft, PP toughness Very good, commonly known as the folding glue, Lekou Lekou is the use of this material, so if the cost is within the allowable range, the recommended use of PP materials.
Disposable lunch boxes are mainly paper, starch, plastic and rare metal. Now on the market foaming class and carbon * calcium class lunch box has gradually been consumers and * policy does not allow the use of and reduce the amount. Now the lunch box class for the environmental protection lunch box, especially corn starch lunch box, which is not only environmentally friendly and can solve the farmers' food income and fine * scale production.
The types of disposable lunch boxes are as follows: starch-based disposable lunch boxes starch-based edible lunch boxes, as the name suggests, it is based on starchy plants as raw materials, adding dietary fibers and other edible additives through the mixing and kneading and become, which adopts the biological compounding, crosslinking of polysaccharides, calcium chelating and other technologies refined from the dense layer, the inner waterproof layer, It is made by biological compounding, polysaccharide cross-linking, calcium ion chelating and other technologies.
Cardboard-type disposable lunch box Cardboard lunch box is 300-350 grams of bleached sulfur * salt wood pulp cardboard as raw materials, through a similar sheet metal * press molding process for die-cutting and gluing or die-cutting and pressing, shaping and other processes made. In order to prevent its seepage of oil or water, to the surface of the film or the application of chemical additives. In the production and use of the process is non-toxic to humans, non-*. However, the quality of the cardboard is higher, and the cost is also higher.
What is the material of the disposable transparent lunch box 2
A pulp molded lunch box (plant fiber molded tableware)
Pulp molded tableware products in the road to banning the plastic has a certain superiority, first of all, in the raw materials, pulp molded disposable lunch box to wheat straw, bagasse and other plant fibers as raw materials, do not add any PP material, through the pulp molding wet pressing process, the pulp molding process can be used for the production and use of the disposable lunch box, and the material is used for the production of the disposable lunch box. Through the pulp molding wet pressing process molding, adding waterproof and oil-proof food-grade additives in the pulp, to achieve the effect of holding hot and cold food.
Plant fiber biodegradable lunch box is currently the most active type of lunch box on the market, to take the lead in banning plastic in Hainan Province, for example, Hainan Province to completely ban the use of plastic tableware, circulation, sales, storage. Pulp molded tableware has undoubtedly become an ideal plastic substitute.
Sugarcane pulp disposable lunch boxes belong to the fully degradable type of lunch boxes, which can be completely degraded to organic matter in 90 days under industrial composting or home composting conditions, returning to nature.
Two, corn starch-based lunch boxes
Corn starch biodegradable lunch boxes are made of natural corn starch and plant fiber, supplemented by bio-polyester, polyol and other substances.
Corn starch lunch box can be naturally degraded in the soil and natural environment, the degradation rate according to the composition of the lunch box can be up to 60% -80%, to a certain extent, it can replace the plastic products, reduce the white pollution of the environment. It is an ideal substitute for the controversial "sterilized tableware" commonly used in the catering market.
PLA degradable tableware
PLA degradable lunch box usually refers to the pulp molding process on the combination of PLA composite film and pulp molding product products, that is, PLA film products.
PLA composite film is a kind of completely biodegradable film produced and processed from PLA as raw material, which can be laminated on pulp molding and paper products by heating.
Polylactic acid (PLA) is a new biodegradable material made from starch feedstock derived from renewable plant sources such as corn. The starch material is saccharified to obtain glucose, and then the glucose and certain strains of bacteria fermentation to make high-purity lactic acid, and then through chemical synthesis methods to synthesize a certain molecular weight of PLA.
It has good biodegradability, and can be completely degraded by microorganisms in nature after use, eventually generating carbon dioxide and water without polluting the environment, which is very beneficial to the protection of the environment, and is recognized as an environmentally friendly material.
In view of the advantages of PLA, through the laminating process and pulp molding products after the combination, not only can save the use of waterproof and oil-proof agent, but also better play a role in sealing the pulp molding products air holes, so that the original can not be alcohol-proof products can prevent the leakage of alcohol. At the same time after sealing the air holes, tableware in the actual use of the process reduces the product. Air permeability, higher thermal insulation performance, insulation time is longer.
What is the material of disposable transparent lunch box3
First, what is a biodegradable lunch box
Biodegradable lunch box refers to the natural environment microorganisms (bacteria, molds, algae) enzyme action, biochemical reactions, causing the appearance of mold to the inner quality changes, and ultimately the formation of carbon dioxide and water in the lunch box.
The entire degradation process can be broken down into harmless substances without artificial participation, which is a very long process. In addition to the degradation performance of GB18006.3-2020 "General Technical Requirements for Disposable Degradable Food and Beverage Containers", degradable lunch boxes should also have recycling value, easy to regenerate, or easy to hygienic landfill and high temperature composting.
Second, what is the material of biodegradable disposable lunch boxes
Biodegradable lunch boxes use two kinds of materials: one is made of natural materials, such as paper products, straw, starch, and so on, biodegradable, and is also known as environmentally friendly products; the other is to use plastics as the main ingredient, adding starch, photosensitizers and other substances made.
1, biodegradable natural materials lunch box
The disposable biodegradable lunch box made of natural materials is also known as biodegradable lunch box. Biodegradable lunch box is a more advanced environmental protection products. It takes starch as the main raw material, adds one year old plant fiber powder and special additives, and is processed by chemical and physical methods to make biodegradable lunch boxes. As starch is a biodegradable natural macromolecule, it is decomposed into glucose under the action of microorganisms, and finally into water and carbon dioxide.
In addition, the materials mixed with it*** are also fully degradable, so it can be said that it has no impact on the environment. The main source of starch, the raw material for production, can be corn, potatoes, sweet potatoes, cassava and other annual long-term plants. Naturally, the biodegradable lunch box is not perfect, for example, most of the production raw materials are food crops, and there are mold and mildew resistance and other issues yet to be resolved.
2, biodegradable plastic lunch boxes
The raw material for these disposable lunch boxes is biodegradable plastic, so-called biodegradable plastics is to add a certain amount of additives to the production of plastics, such as photosensitizers, starch and other raw materials.
In this way, biodegradable plastic products can be broken down into pieces from a complete shape after they are used up and discarded in nature after three months of exposure, thus improving the environment, at least visually. But the biggest drawback of this technology is that these fragments can not continue to degrade, but only from a large piece into a small piece of plastic, can not be fundamentally competent to eliminate the task of white pollution.