The mesh bag is a kind of plastic woven bag, but it is different from the woven bag we see everyday. The biggest difference between him and the woven bag is that the density is very small and the net mouth is relatively large, so we call it a mesh bag from this aspect. But his quality is very good, because the density is small, so the tension of the wire is very large, because the main purpose of the mesh bag is to carry goods and products with relatively large weight.
The general purpose of the mesh bag is mainly applied to goods such as vegetables, fruits and vegetables, such as cabbage, cabbage, potatoes, taro and the like, which is beneficial to the preservation of vegetables, and is also convenient for handling and transportation, and the gold diamond mesh bag. The cost is also much lower than the cost of plastic woven bags, and it is easy to carry. This is the biggest reason and characteristic of why gold diamond mesh bags are so popular with goods such as vegetables.
The basic classification of mesh bags is as follows:
According to the weaving method, it is divided into two categories: flat-woven mesh bags and warp-knitted mesh bags.
The flat-woven mesh bags are divided into three types according to the density of warp and weft, which are divided into large net, medium net and small net.
Warp-knitted mesh bags are divided into large nets and small nets according to their different warp and weft densities.
Specifications: The specifications of the mesh bag are indicated by the effective size L*B, and there is no size series.
The main technical indicators of the mesh bag are: extruder temperature and pressure, flat wire or split wire production process is the most critical and complex process in the plastic weaving process. Flow control, cooling, stretching, heat treatment (setting) temperature control, draw ratio of flat wire, relative pull-off force, control of elongation at break, yield, energy consumption, output ratio, etc.
It is melt extruded into a film by an extruder, and the production process of the plastic bag of the mesh bag is compounded by the raw materials and the auxiliary materials. The film is cooled, divided into filaments (filaments) and then oriented to produce flat yarns. Finally, the flat yarns are wound on a bobbin to form a yarn ingot to send a weaving process to produce a woven fabric.
The process of producing split yarns is basically the same as the process of producing flat yarns only after being divided into filaments (filaments). Add a netting process.
The main raw material for the production of flat or split filaments is polypropylene (PP and sometimes high density polyethylene (HDPE linear low density polyethylene (LLDPE or blended).
For example, antioxidants, auxiliary materials for the production of flat yarns are mainly masterbatch (calcium filler) colorants (color masterbatch) and other modifiers. Lubricants, etc.
Winding machines, the main equipment for producing flat or split filaments is a wire drawing machine. Auxiliary equipment is a mixer, waste recycling equipment, and the like.
Mesh bags are widely used in the packaging of vegetables, fruits, such as potatoes, onions, garlic, cabbage, carrots, green peppers, beans, apples, oranges, pineapples. And a variety of green mesh bags.
