The polymer structure of the roll-to-roll bag has no independent macromolecules, so it has no flexibility and plasticity and cannot be dissolved and melted, but it can only be expanded, hardness and brittle. The PE plastic bags we often use are not a pure substance, but made of many materials. Convenience, main uses and characteristics of the continuous卷包
Including polymer (or synthetic resin) is the main component of plastic, in addition, in order to improve the performance of plastic, and add various auxiliary materials to the polymer, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc. , Become a good PE plastic bag performance. Structural characteristics of PE plastic bags:
Most PE plastic bags are light, chemically stable and non-corrosive.
Good impact resistance
Good transparency and wear resistance
Convenience, main uses and characteristics of the continuous卷包
In supermarket shopping, bread rolls are also usually bought, usually used to buy vegetables or bulk food. At the beginning, it can be easily torn off, with jagged edges between each segment, which can easily be torn by the grain. Secondly, when buying bulk goods, the weight and weight are more convenient in the volume of the bag, so that we can use our shopping to a certain extent.
Even if it is a roll bag, there is one thing that we have in common, that is, our home is in a bag, but it is also a kind of even a roll bag, so even a roll bag can help us improve the indoor environment, as garbage Easy to handle. Even though the volume is small, it is heavy, and even the price of the package, so there is no need to worry about over-loading.
Buy vegetables and fruits in the supermarket, wholesale or even roll bags, people usually use free rolls. The price of these seemingly free plastic packaging is the same as the price of the goods they buy. So what is the weight of a plastic bag? After repeated weighing and calculation, according to the size and thickness of the bag, the model is large, medium and small, and the weight is 2-8g.