Ultraviolet ray separating greenhouse film

A UV blocking and ultraviolet technology, applied in greenhouse cultivation, synthetic resin layered products, horticulture, etc., can solve the problems of not being able to prevent flower black spot and not being able to suppress ultraviolet light, so as to delay the mutual transmission of viruses and control black spots Disease, the effect of enhancing commercial value

Active Publication Date: 2012-10-31
上海普拉斯克塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The utility model points out that its flower film has high thermal insulation, high light transmission and pesticide resistance pr

Method used

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  • Ultraviolet ray separating greenhouse film

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preparation example Construction

[0029] The preparation method of the anti-ultraviolet blocking greenhouse film is as follows: the relevant raw materials of the inner layer 2, the middle layer 1, and the outer layer 3 are put into the warehouse and automatically batched, wherein the ultraviolet inhibitor is an ultraviolet inhibitor using LDPE or LLDPE as a carrier. It is added in the form of masterbatch, and the mass ratio of UV inhibitor in LDPE or LLDPE is 15-25%; it is weighed and sent to the screw of the three-layer co-extrusion blown film equipment to mix and extrude and plasticize into a melt; filter and filter , diverted to the die head through the flow channel, extruded and compounded to form a film; the extruded film is then blown, drawn, folded, and rolled to form the finished UV barrier film.

[0030] The ultraviolet blocking film products in the examples were prepared using a three-layer co-extrusion blown film equipment conventionally configured by Davis Corporation in the United States.

[0031]...

Embodiment 1

[0033] An ultraviolet blocking greenhouse film with a three-layer co-extruded composite film structure comprising an inner layer, a middle layer and an outer layer. Among them, the outer layer material is PE with 12% anti-aging agent and 2% slow-release agent, and the middle layer material is added with 5% ultraviolet inhibitor, 10% dripping anti-fogging agent, 5% heat preservation agent, and 12% anti-aging EVA with 4% slow-release agent and 4% slow-release agent, the inner layer is made of EVA and PE with 12% anti-aging agent, 2% slow-release agent and 10% dripping anti-fogging agent. In the inner layer, the weight ratio of EVA and PE is 1:2.

[0034] Among them, the ultraviolet inhibitor is a masterbatch made of benzotriazole and benzophenone compounded and plasticized with LLDPE as the carrier, and the weight ratio of benzotriazole and benzophenone is 80:20; and the ultraviolet inhibitor is contained in LLDPE The mass ratio is 20%.

[0035] The thickness ratio of the oute...

Embodiment 2

[0038] An ultraviolet barrier film with a three-layer co-extruded composite film structure comprising an inner layer, a middle layer and an outer layer. Among them, the outer layer material is PE with 12% anti-aging agent and 2% slow-release agent, and the middle layer material is added with 10% dripping anti-fogging agent, 4% slow-release agent, 12% anti-aging agent, 7% ultraviolet light Inhibitor EVA and PE, the inner material is PE added with 10% dripping anti-fogging agent, 2% slow-release agent and 12% anti-aging agent. In the middle layer, EVA and PE are used in a weight ratio of 1:2.

[0039] Among them, the ultraviolet inhibitor is a masterbatch formed by compounding and plasticizing benzotriazole, benzophenone-3, and benzophenone using LDPE as the carrier, and the added weight of benzotriazole, benzophenone-3, and benzophenone The ratio is 60:20:20; and the mass ratio of ultraviolet inhibitor in LDPE is 25%.

[0040] The total thickness of the UV barrier film prepar...

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Abstract

The invention discloses an ultraviolet ray separating greenhouse film. The ultraviolet ray separating greenhouse film disclosed by the invention is an integrated thin film structure which is formed by three layers including an outer layer, a middle layer and an inner layer in a co-extruding and compounding way; and mainly, an ultraviolet inhibitor is introduced into the middle layer of the thin film when polyethylene is machined, so that a formed thin film product can screen ultraviolet light with certain wave-bands in the sunshine, and certain light rays which are harm to the growth of crops can be screened. Particularly, when flowers are planted in a greenhouse, according to the ultraviolet ray separating greenhouse film, and the phenomenon that petals of a rose are dark in color and cluster can be solved, so that the commercial value of products can be improved. The ultraviolet greenhouse film disclosed by the invention can effectively separate more than 98% of ultraviolet light with the length of 290-380nm, is good for controlling the happening of plant diseases and insect pests such as black spot, gray mold, and sclerotinia sclerotiorum of the crops, and is particularly suitable for the growth of the roses.

Description

technical field [0001] The invention relates to a greenhouse film, in particular to an ultraviolet blocking greenhouse film. The invention belongs to the technical field of agricultural film preparation. Background technique [0002] my country's functional agricultural film was developed on the basis of ordinary greenhouse film in the late 1970s. In recent years, in order to meet the off-season growth of crops, more and more enterprises have developed agricultural films with special functions. At present, most of the films used in ordinary greenhouses are anti-aging films made of ordinary low-density polyethylene materials. However, ordinary polyethylene anti-aging films have poor strength and general light transmission and heat preservation performance, which is difficult to meet the growth of high-end flowers and other crops. Environmental needs. [0003] As we all know, 7-8% of sunlight is ultraviolet light. For crop cultivation, although ultraviolet light has a certa...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/30B32B27/32B29C47/06A01G9/14
CPCY02A40/25
Inventor 杨炳文江涛朱平沈燕
Owner 上海普拉斯克塑料有限公司
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