Polyethylene bag in our life

Packaging material has always been an important part of the production process of any self-respecting company. The invention of the century - plastic materials - greatly facilitated the task of producers and traders.

Lightness, strength, moisture resistance, relative cheapness are very important indicators of packaging material. The polyethylene bag so quickly and firmly entered our life, that, as it seems to us, we can not do without it.

Prehistory

The packaging package was first produced in 1957 in the United States. It was used for packing sandwiches. Ten years later, already 30% of the US bakery products were packed into such packages. Then Western Europe was carried away by this packing, as a result of which in 1973 the production of packages reached 11.5 million units. In 2002, when the whole world was covered by a boom of polyethylene packaging, the total world output of this product was 4-5 trillion pieces per year. The leaders in the manufacture of the finest packing bags (4.5-5 microns) are China, Russia, the countries of Southeast Asia. A thin polyethylene bag is made of dense polyethylene (at low pressure) HD (so-called "rustling"). Sometimes high-density polyethylene is used, but low density (LD, LLD), then the packages look smooth. Nevertheless, such a thin bagging bag is characterized by increased strength.

Different, and therefore interesting

A polyethylene bag visually always attracts the attention not only of children, but also of adults. This is facilitated by vivid applications on all sorts of topics. The four-color image applied to the bag, using the flexographic method, can serve as one of the relatively effective ways of self-promotion. Different types of this product are produced depending on their purpose: packing bag (transparent); Package-shirt; Package with handle loop, hole; Bags for garbage (with dyes) like "T-shirts" or with lingering bands; Branded packages (with a trademark). We will dwell on packages like "T-shirt". This type of product has acquired such a nickname for the characteristic cutting of the handles. The production of "shirt" packages dates back to 1982. They began to be produced later than other products of this category, but nevertheless firmly took the position of leaders, especially in the network of trade enterprises. There are also pnd- and pvd-packages. The production of PVD bags is based on polyethylene granules of high pressure, respectively, pnd - low pressure. Packages pvd - this is the packing material that we all use in everyday life (for small and medium packaging). A pond packages differ in that they are used for large packages (up to 20-30 kg) and can also differ in their resistance to excessive loads and negative environmental effects. Therefore, low pressure polyethylene is also used for the production of pressure pipes, fittings, cable sheaths.

Danger

We must not forget about the harm that the ecological bag inflicts on the polyethylene bag. As a result of negligent use of polyethylene products, the Earth, figuratively speaking, is practically packed in it, and the whole living world on the planet feels the negative consequences of this (in particular, marine inhabitants take plastic for food). We must not forget that each kilogram of bags absorbs in the production of 1.2 kg of precious resource - crude oil. It is worth remembering that plastic can be used repeatedly: from the worked out polyethylene bags, sections for fences, fences, park benches and much more are made. It can be burned and generate electricity. It must be remembered that polyethylene is different - less toxic and even soluble.