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The bag is made of PE material (polyethylene) made by extrusion machine. PE is odorless, non-toxic, feel like wax, with excellent low temperature resistance (minimum working temperature up to -70 ~ -100 ℃) More suitable for the cold environment in the north, good chemical stability, the ability of most of the acid-base erosion, at room temperature insoluble in the general solvent, electrical insulation performance is good. It is a very good packaging product for eggs, fruit and garlic.
The toughness of the net bag for our use is very important, so the manufacturers in the production time is more concerned about how to improve its toughness, then how to improve it, let's take a look!
The strength of the flat yarn forward, dealing with the broken wire problem, the strength of the bag bag bag has been enhanced. Water tank is a part of the composition of the drawing machine, the water tank in the cooling water temperature of the uneven impact of the film after the cooling of the physical function, but also affect the flat wire strength of the primary elements. This is because the polypropylene is crystalline polymer material, its crystal appearance has a variety of. In the natural cooling process will often form a considerable α-type spherulites, this spherical crystal orientation is more difficult, is not conducive to drawing.
Add the masterbatch is one of the primary ingredients of the raw material ratio, the result is to improve the physical function of silk and low capital. With the addition of the addition of the masterbatch, the tensile strength of the flat yarn will gradually decrease.
What factors affect the tensile load of fruit net bags
The bag is made of polypropylene, polyethylene resin as the main raw material, add a small amount of accessories, mix and melt through the extruder, extruded plastic film cut into silk below the resin melting temperature, through molecular orientation and Heat set made of high strength, low elongation of the flat wire, and then by winding, weaving, cutting, sewing made of.
In recent years, the results of the sampling test on the net bag products have been found. The unqualified items of the net bag products are mainly concentrated on the tensile load items. The tensile load of the net bag is an important index. Directly affect the overall quality of the net bag. The appearance of the net bag should meet the following requirements, the cloth is not allowed to appear in the same place broken 3 broken wire, stitching requirements do not allow line off pin, broken wire, The emergence of these problems also directly affect the tensile load index.
Vegetable net bag production and processing technology
Vegetable net bag in the modern people's home life, vegetable net bag production of flat silk or split silk wire is the primary equipment is drawing machine, winding machine, auxiliary equipment is mixing machine, waste recycling equipment.
Vegetable net bags produced flat yarn auxiliary material is mainly masterbatch, colorants and other modifiers, such as antioxidants, lubricants and so on. The primary material for producing flat or cracked filaments is polypropylene, sometimes with high density polyethylene, linear low density polyethylene, or blended. Vegetable net bag out of the process of splicing silk wire and the production process is exactly the same, only after the split into a wire, add a bar network process.
The production process of plastic flat yarn is mixed with the material and the auxiliary material, which is extruded into a film by the extruder. The film is cooled and divided into strips, and then flattened by drawing orientation. Finally, Wire wrapped in the bobbin, made of spindles to send the weaving process to produce woven fabric of the process.