1. Development and classification of Packaging Bags
Development of Packaging Bags
The packaging bags experienced four distinct development phases: original packing bags
stage, the stage of large packing bags, sachets stage and then gradually enters a new stage
of the environmental (green) packing bags. With the development of the commodity and
economy, the marketability of the packaging itself is also growing significantly, it has become
a no longer attached to the commodity production of special products, and an product that all
goods are inseparable from it and widely used. State scientists have developed an
environmentally friendly electrolyte made of plastic bags, and this environmentally friendly
plastic bag can not only be harmless decomposition, and this environmentally friendly plastic
bag can dissolve in water. According to the actual figures, 80% of the use of plastic bags, the
final with ordinary garbage is transported to the garbage heap Tin processing, only seven
percent of plastics are recycled and used. This new environmentally friendly plastic food
packaging bag in the decomposition process does not release harmful substances, even
broken down into natural substances that insect favorites greatly, and this is helpful to protect
the natural environment.
Plastic Packing Bags
Plastic packing bags can be divided into four categories according to bag making way:
trilateral closure, middle underseal, three-dimensional and the closure and flakes. Trilateral
closure is sealed around the bags being back dimensions are finished dimensions, and it has
a certain sense of the overall design of unfettered, and before and after the design has the
certain coherence. Bottom seal are sealed at the back, the front size of the finished size, and
the back side is divided into two equal parts, and its width being equal to the width on the
front side. Perspective in the closure is in the bottom seal on the basis of, at both sides of a
perspective side, n-side 3 sides of the back, the same are in the same set of drum. Sheet
material due to the restriction by the printed material, the positive and negative must be
separately designed, separately plate setter, it cannot appear in the same drum.
Composite Packaging Bag
Composite packing bag is to mix the various characteristics of the materials, and in order to
improve the permeability of packaging materials, moisture permeability, oil resistance, water
resistance, chemical resistance, to play the performance of pest control, dust-proof, anti-
microbial, light, smell, smelly and other odor isolated, as well as heat, cold, better mechanical
strength and processing applicable performance impact resistance and good printing and

2. decorative effect. According to the package category, there are: packaging in the form of
trilateral letters, yin-yang bag, middle sealing bags, pillow-type bags, five-sided sealed bags,
stand-up pouch, zipper bags, straw bags, coil, cap and other materials. If classified by
functions, there are: the high overcast septum bags, cooking film bags, anti-static film bags,
antimicrobial film bags, the anti-fog film bags, vacuum bag, anti-chemical film bags, the
deaerator packaging film bags and modified atmosphere packaging film bags, etc.
The article is come from:http://www.handbagmanufacturer.com.cn/index.php/development-
and-classification-of-packaging-bags.htm