|With the development of petroleum and chemical industry, the production of polyethylene has been developed rapidly, and the output is about 1/4 of the total plastic production. In 1983, the world polyethylene production capacity was 24.65Mt, and the building capacity was 3.16Mt. The latest statistics in 2011 showed that the global capacity reached 96Mt. The development trend of polyethylene production showed that production and consumption gradually shifted to Asia, and China became the most important consumer market.
|Bubble mailer bag
Bubble mailer bag Is for express delivery industry,so called bubble envelope, by polyethylene bubble cover combined with PET or kraft paper , not only have the characteristics of general express plastic bags, but also has more thick buffer layer, provide higher level protection for objects in the package, in addition has heat insulation, sound insulation, moisture-proof, extrusion, impact of the advantages.
The color of the Bubble mailer bag generally pointed by the customer, mostly for the company's signature color, such as DHL generally use yellow, ups use grey, fadex with purple and orange, SF uses the gray. Uniform color express bubble bag can establish a company's professional image, highlighting the strength of the company.
Express bubble bag has a lot of characteristics, environmental protection and energy saving, it can be repeated recycling, not only save the cost, but also to protect the environment. It does not look like a disposable plastic bag, was thrown away after use, not only pollute the environment, but also increase the workload of environmental sanitation, but also a waste of energy
|The co extrusion film is applied to pure milk bags, express bags and metal protective films. It is characterized by good tensile properties and good surface brightness.
In the process of thin film, a kind of raw material is extruded into another kind of film which has been made, or the different kinds of films have been bonded together to form a multilayer film, which is called composite film. Most of the material of the composite film is plastic, but it can also be made of paper, metal foil (usually aluminum) or fabric. The basic requirement of composite film is good bonding between the layers to ensure the overall mechanical properties of the packaging.