Multifunctional three layers combined antifog film of polythene for shed
A layer-composite, polyethylene technology is applied in the field of agricultural polyethylene three-layer composite multi-functional anti-fog shed film, which can solve the requirements of strict selection of shed film dripping agent, poor transparency and dustproof performance of shed film, and restricting dripping agent. Application scope and other issues, to achieve the effect of inhibiting and reducing crop diseases, outstanding dustproof performance, and conducive to promotion and application
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Embodiment 1
[0038] The shed film of the present invention has a three-layer composite structure, anti-fogging agent is used in the inner layer, and the thickness ratio of the three layers is 3:4:3. Each layer is made of polyethylene as a matrix and functional additives are added in proportion. The co-extrusion blow molding process is processed and formed, and the three-layer co-extrusion blow molding process is a known technology, and the parts by weight ratio of each layer of the formula is as follows:
[0039] Outer layer formula (by weight ratio):
[0040] 45.6894 parts of low-density polyethylene resin with a melt index of 0.3-0.7g / 10min
[0041] 45.6894 parts of linear low-density polyethylene resin with a melt index of 0.7-1.0g / 10min
[0042] 4.91 parts of linear low density polyethylene powdery resin with a melt index of 1.5g / 10min
[0043] 1.97 parts of ethylene-vinyl acetate resin with VA content of 12-14%
[0044] Drip agent 0.74 parts Light stabilizer 622 0.41 parts
[0045...
Embodiment 2
[0063]The shed film of the present invention has a three-layer composite structure, anti-fogging agent is used in the inner layer, and the thickness ratio of the three layers is 3:4:3. Each layer is made of polyethylene as a matrix and functional additives are added in proportion. The co-extrusion blow molding process is processed and formed, and the three-layer co-extrusion blow molding process is a known technology, and the parts by weight ratio of each layer of the formula is as follows:
[0064] Outer layer formula (by weight ratio):
[0065] 32.192 parts of low-density polyethylene resin with a melt index of 0.3-0.7g / 10min
[0066] 55.783 parts of linear low-density polyethylene resin with a melt index of 0.7-1.0g / 10min
[0067] 4 parts of linear low density polyethylene powdery resin with a melt index of 1.5g / 10min
[0068] 1.6 parts of ethylene-vinyl acetate resin with VA content of 12-14%
[0069] Drip agent 0.6 parts Light stabilizer 622 0.34 parts
[0070] Antiox...
Embodiment 3
[0088] The shed film of the present invention has a three-layer composite structure, anti-fogging agent is used in the inner layer, and the thickness ratio of the three layers is 3:4:3. Each layer is made of polyethylene as a matrix and functional additives are added in proportion. The co-extrusion blow molding process is processed and formed, and the three-layer co-extrusion blow molding process is a known technology, and the parts by weight ratio of each layer of the formula is as follows:
[0089] Outer layer formula (by weight ratio):
[0090] 59.5 parts of low-density polyethylene resin with a melt index of 0.3-0.7g / 10min
[0091] 30 parts of linear low-density polyethylene resin with a melt index of 0.7-1.0g / 10min
[0092] 6 parts of linear low density polyethylene powdery resin with a melt index of 1.5g / 10min
[0093] 2.4 parts of ethylene-vinyl acetate resin with VA content of 12-14%
[0094] Drip agent 0.9 parts Light stabilizer 622 0.48 parts
[0095] Antioxidant...
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