Five-layer coextrusion greenhouse film with functions of high dustproofing and long-lasting light conversion and preparation method

Abstract

The invention belongs to the technical field of agricultural film preparation, and particularly relates to a five-layer coextrusion greenhouse film with functions of high dustproofing and long-lastinglight conversion and a preparation method. The five-layer coextrusion greenhouse film with the with the functions of high dustproofing and long-lasting light conversion comprises an outer layer, a secondary outer layer, a middle layer, a secondary inner layer and an inner layer, wherein the outer layer and the secondary outer layer are dripping layers of the greenhouse film, the middle layer is an insulating layer of the greenhouse film, and the inner layer and the secondary inner layer are longevity layers of the greenhouse film; light conversion masterbatch is added to the secondary inner layer, and dustproof masterbatch is added to the inner layer. The five-layer coextrusion greenhouse film with functions of high dustproofing and long-lasting light conversion has a dripping function, alight conversion function and a dustproof function; the preparation method is scientific, reasonable, simple and feasible; Crops in a greenhouse covered with the five-layer coextrusion greenhouse film with the functions of high dustproofing and long-lasting light conversion have the advantages of fast growth, good fruit setting, multiple fruits, high stress resistance, early maturity, increased yield and good quality.

Description

technical field

[0001] The invention belongs to the technical field of agricultural film preparation, and in particular relates to a five-layer co-extruded greenhouse film with high dust resistance and long-lasting light conversion and a preparation method. Background technique

[0002] At present, the production and consumption of plastic agricultural film in my country ranks among the top in the world, and the agricultural film market is gradually developing to the high-end field. The development from the conventional 3-layer to 5-layer structure has become the general consensus of the agricultural film industry, and the agricultural film is moving towards Multifunctional development; the "vegetable basket" project is an important way to increase farmers' income, and it is also the basic condition for stabilizing prices, stabilizing the market, and ensuring people's living needs. With the construction of "vegetable basket" projects across the country, the scale of facility v...

Examples

Embodiment 1

[0078] The inner layer, sub-inner layer, middle layer, outer layer, and sub-outer layer greenhouse film proportioning described in this embodiment 1 are added according to the ratio given in the formula, specifically:

[0079] The proportion of the inner layer of the greenhouse film: 80% polyethylene raw material (200kg) + 10% longevity masterbatch (25kg) + 10% dustproof masterbatch (25kg) (a total of 250kg is poured into the mixer and mixed evenly), of which polyethylene raw material Mix low-density polyethylene and metallocene polyethylene in a mass ratio of 3:7;

[0080] The ratio of the second inner layer of the greenhouse film: 87% polyethylene raw material (217.5kg) + 10% longevity masterbatch (25kg) + 3% light conversion masterbatch (7.5kg) (a total of 250kg is poured into the mixer and mixed evenly), of which The polyethylene raw material is mixed by low-density polyethylene and metallocene polyethylene in a mass ratio of 7:3;

[0081] The ratio of the middle layer of...

Embodiment 2

[0118] The ratio of the inner layer, sub-inner layer, middle layer, outer layer and sub-outer layer of greenhouse film described in this embodiment 2 is added according to the ratio given in the formula, specifically: inner layer of greenhouse film, sub-inner layer, middle layer, outer layer and The proportioning of second outer layer is all identical with embodiment 1.

[0119] The weight of each package of the longevity masterbatch, thermal insulation masterbatch and dripping anti-mist masterbatch is 25kg, and the proportioning ratio is the same as in Example 1.

[0120] Described dustproof master batch weighs 25kg per bag, is to be made of the raw material of following weight:

[0121]

[0122] The light-changing masterbatch weighs 25kg per package and is made of raw materials with the following weights:

[0123] Polyethylene powder 23.75kg

[0124] Organic synthetic rare earth light conversion agent (Hunan Normal University) 1.25kg.

[0125] The preparation method of...

Embodiment 3

[0127] The inner layer, sub-inner layer, middle layer, outer layer, and sub-outer layer greenhouse film proportioning described in this embodiment 3 are added according to the ratio given in the formula, specifically: the greenhouse film inner layer, sub-inner layer, middle layer, outer layer and The proportioning of second outer layer is all identical with embodiment 1.

[0128]The weight of each package of the longevity masterbatch, thermal insulation masterbatch and dripping anti-mist masterbatch is 25kg, and the proportioning ratio is the same as in Example 1.

[0129] Described dustproof master batch weighs 25kg per bag, is to be made of the raw material of following weight:

[0130]

[0131] The light-changing masterbatch weighs 25kg per package and is made of raw materials with the following weights:

[0132] Polyethylene powder 23kg

[0133] Organic synthetic rare earth light conversion agent (Hunan Normal University) 2kg.

[0134] The preparation method of the h...

technical field

[0001] The invention belongs to the technical field of agricultural film preparation, and in particular relates to a five-layer co-extruded greenhouse film with high dust resistance and long-lasting light conversion and a preparation method. Background technique

[0002] At present, the production and consumption of plastic agricultural film in my country ranks among the top in the world, and the agricultural film market is gradually developing to the high-end field. The development from the conventional 3-layer to 5-layer structure has become the general consensus of the agricultural film industry, and the agricultural film is moving towards Multifunctional development; the "vegetable basket" project is an important way to increase farmers' income, and it is also the basic condition for stabilizing prices, stabilizing the market, and ensuring people's living needs. With the construction of "vegetable basket" projects across the country, the scale of facility v...

Examples

Embodiment 1

[0078] The inner layer, sub-inner layer, middle layer, outer layer, and sub-outer layer greenhouse film proportioning described in this embodiment 1 are added according to the ratio given in the formula, specifically:

[0079] The proportion of the inner layer of the greenhouse film: 80% polyethylene raw material (200kg) + 10% longevity masterbatch (25kg) + 10% dustproof masterbatch (25kg) (a total of 250kg is poured into the mixer and mixed evenly), of which polyethylene raw material Mix low-density polyethylene and metallocene polyethylene in a mass ratio of 3:7;

[0080] The ratio of the second inner layer of the greenhouse film: 87% polyethylene raw material (217.5kg) + 10% longevity masterbatch (25kg) + 3% light conversion masterbatch (7.5kg) (a total of 250kg is poured into the mixer and mixed evenly), of which The polyethylene raw material is mixed by low-density polyethylene and metallocene polyethylene in a mass ratio of 7:3;

[0081] The ratio of the middle layer of...

Embodiment 2

[0118] The ratio of the inner layer, sub-inner layer, middle layer, outer layer and sub-outer layer of greenhouse film described in this embodiment 2 is added according to the ratio given in the formula, specifically: inner layer of greenhouse film, sub-inner layer, middle layer, outer layer and The proportioning of second outer layer is all identical with embodiment 1.

[0119] The weight of each package of the longevity masterbatch, thermal insulation masterbatch and dripping anti-mist masterbatch is 25kg, and the proportioning ratio is the same as in Example 1.

[0120] Described dustproof master batch weighs 25kg per bag, is to be made of the raw material of following weight:

[0121]

[0122] The light-changing masterbatch weighs 25kg per package and is made of raw materials with the following weights:

[0123] Polyethylene powder 23.75kg

[0124] Organic synthetic rare earth light conversion agent (Hunan Normal University) 1.25kg.

[0125] The preparation method of...

Embodiment 3

[0127] The inner layer, sub-inner layer, middle layer, outer layer, and sub-outer layer greenhouse film proportioning described in this embodiment 3 are added according to the ratio given in the formula, specifically: the greenhouse film inner layer, sub-inner layer, middle layer, outer layer and The proportioning of second outer layer is all identical with embodiment 1.

[0128]The weight of each package of the longevity masterbatch, thermal insulation masterbatch and dripping anti-mist masterbatch is 25kg, and the proportioning ratio is the same as in Example 1.

[0129] Described dustproof master batch weighs 25kg per bag, is to be made of the raw material of following weight:

[0130]

[0131] The light-changing masterbatch weighs 25kg per package and is made of raw materials with the following weights:

[0132] Polyethylene powder 23kg

[0133] Organic synthetic rare earth light conversion agent (Hunan Normal University) 2kg.

[0134] The preparation method of the h...

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