In 2008 Shanghai shopping bags, packaging bags exhibition, show a large number of environmental protection shopping bag. A superb collection of beautiful things on the shopping bag, which has the most environmentally friendly? We are following on the emerging market of all types of environmental protection bag comprehensive analysis.

Plastic shopping bags

According to the state of "plastic limit order" on the plastic bag standards, the plastic shopping bag is divided into three types, namely, ordinary plastic shopping bags, biodegradable plastic shopping bags, plastic shopping bags. Among them, only the degradable plastic bags is environmental protection bag, divided into photodegradation and biodegradation of two.

The ordinary plastic shopping bags: using polyolefin and filler as raw materials, the plastic shopping bag has no performance degradation, abandoned in the field will not degrade. This kind of plastic shopping bag has excellent recyclable, can be repeatedly recycled. Recycling material performance is slightly reduced in different degree, but can be used in the production of performance requirements is not high, not strict requirements of color shopping bags and garbage bags. The key problem is whether recycling back problems.

The plastic shopping bag: this kind of shopping bag with modified starch as the main raw material, adding a small amount of other biodegradable materials in order to improve its performance. The use of plastic shopping bags left in the field after natural degradation. Because the starch based plastic shopping bags with starch as the main raw materials, and the source of starch in food, because of the soaring food prices, countries have banned consumption of food to carry out industrial project, so this kind of product 's future.

The biodegradable plastic shopping bags: these shopping bags in order to fully biodegradable plastic as raw materials to produce, with full degradation performance. Products are abandoned in the field can be completely decomposed into small molecular microbiology, no environmental pollution, the overseas promotion of such plastic shopping bags.

Nonwoven shopping bag

Nonwoven fabric is made of plastic non-woven cloth, a lot of people think that" cloth" is the natural material, is actually a misunderstanding. Common nonwoven materials of polypropylene or polyethylene terephthalate, especially polypropylene with plastic shopping bags with PE class, all belong to the five general plastics, belonging to50 years can not degrade plastics. Therefore, with non-woven cloth shopping bags from saying substantially is used as raw materials of polypropylene type, also belongs to the plastic bag, so the environmental protection and the ordinary plastic shopping bag, also cannot complete degradation.

Paper shopping bags

We all know that paper strength and water resistance is not good, a lot of water products such as seafood packing not, heavy metal products also hard bearing. Even if everyone to paper, the paper also come from? The first paper making raw materials mainly of wood, the forest resources are extremely deficient, this is the biggest waste of environmental resources; secondly the paper making process will produce a large number of water pollution. In addition, according to expert analysis, paper bags although degradation in natural environment, but in the papermaking process caused by the consumption of energy resources and environment pollution is more serious than the plastic shopping bag. According to the United States chemical association statistics, manufacturing grocery bags of raw materials needed for the less than paper40%,1 pounds of plastic production required energy than1 pounds of paper production required less energy to91%, compared with plastics, paper bag manufacturing and generate 70% more gas emissions. Therefore, lots of paper is the biggest waste of resource and environment, the most serious pollution to the environment.

Cotton shopping bag

Cotton shopping bag strength in a paper bag, can be recycled, but water resistance is not good. Cotton shopping bag has the advantages of reusable bag, but get dirty? Washing is the most common approach, but washing waste water resources, phosphorus washing powder and contaminated soils, while ordinary washing and can kill bacteria.

Shopping basket

There are two kinds of material shopping basket, a kind of natural rattan materials, another to polypropylene plastics. Former with natural vegetation as raw materials, a large number of cutting will destroy the natural environment; the latter uses plastics as raw material, environmental protection with the ordinary plastic shopping bags and non-woven bags. The shopping basket main drawback is not convenient to carry. However, currently on the market also appeared a foldable shopping basket, the basket is much more convenient than traditional.

To sum up, to" environmental protection shopping bag" definition, popular is the shopping bag material from raw materials to processing and manufacturing process has no pollution to the environment, the product can be used circularly, and eventually discarded after easily under natural conditions decomposition or can not pollute environment shopping bag. As for the environmental protection shopping bag choice, should first of all from the making material consideration, these materials include: paper, cotton, silk, woven, degradable plastics and so on; secondly, consider price, if the price is too expensive, and the use of a hundred yuan a bag to go to the supermarket to buy some seafood products, the there is no point value; in addition, also consider the actual needs, if this kind of shopping bags and cheap, buy one on a few, that is in itself a waste, but what about a green one?