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A kind of agricultural greenhouse composite film and preparation method thereof

A composite film and agricultural greenhouse technology, applied in chemical instruments and methods, agriculture, applications, etc., can solve the problems of limited thermal insulation performance and tensile strength, weak far-infrared blocking ability, serious electrostatic adsorption, etc., and achieve far-infrared blocking ability And heat preservation performance improvement, far-infrared blocking ability, good resistance effect

Active Publication Date: 2021-08-10
KOZA NOVEL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of agricultural greenhouse films, we can eat our favorite fruits and vegetables on the dining table all year round. Plastic agricultural greenhouse films are more and more recognized and loved by growers, but the requirements for greenhouse films are also increasing. Due to the material formula of traditional agricultural films such as PE film and PVC film, their thermal insulation performance and tensile strength are limited and their light transmission is poor. After a period of use, dustproof performance will decline and electrostatic adsorption Serious, easy to stick to dust, easy to age, weak far-infrared blocking ability and other problems

Method used

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  • A kind of agricultural greenhouse composite film and preparation method thereof
  • A kind of agricultural greenhouse composite film and preparation method thereof
  • A kind of agricultural greenhouse composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0032] Step S01, preparing the outer reinforcing layer 1, which includes:

[0033] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 83 parts by weight of terephthalic acid, 32 parts of ethylene glycol ester, 0.9 part of catalyst, 0.7 part of stabilizer, 0.5 part of antistatic agent and 0.5 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0034] Cast sheet: Put the mixed material of the outer reinforcement layer into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die head through the extruder and pass through the chilled roll to form the cast sheet;

[0035] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the...

Embodiment 2

[0047] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0048] Step S01, preparing the outer reinforcing layer 1, which includes:

[0049] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 85 parts by weight of terephthalic acid, 33 parts of ethylene glycol ester, 1 part of catalyst, 0.9 part of stabilizer, 0.7 part of antistatic agent and 0.7 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0050] Cast sheet: Put the reinforced layer mixture into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die through the extruder and pass through the chilled roll to form the cast sheet;

[0051] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the outer reinforcement layer 1;

...

Embodiment 3

[0063] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0064] Step S01, preparing the outer reinforcing layer 1, which includes:

[0065] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 83 parts by weight of terephthalic acid, 32 parts of ethylene glycol ester, 0.9 part of catalyst, 0.7 part of stabilizer, 0.5 part of antistatic agent and 0.5 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0066] Cast sheet: Put the mixed material of the outer reinforcement layer into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die head through the extruder and pass through the chilled roll to form the cast sheet;

[0067] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the...

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Abstract

The invention discloses an agricultural greenhouse composite film and a preparation method thereof, comprising the following steps: S01, preparing an outer reinforcing layer includes: preparing a mixed material for the outer reinforcing layer, and casting: putting the mixed material of the outer reinforcing layer into a reaction kettle, polymerizing Heating and melting after the reaction, the extruder extrudes the melt from the chilled roll to form a cast sheet, stretching: stretching the cast sheet to obtain an outer reinforcement layer, S02, preparing the anti-fog dripping layer includes: preparing the anti-fog flow The drop layer mixture includes the inner layer mixture, the middle layer mixture and the outer layer mixture. Blow molding: add the above three-layer mixture to the hopper of the three-layer co-extrusion blown film machine, extrude from the three-layer co-extrusion die, and the cooling fan Inflate and cool to make the anti-fog dripping layer, S03, use polyurethane adhesive to bond the outer layer of the outer reinforcement layer and the anti-fog dripping layer through a bonding machine to make a composite film for agricultural greenhouses, solve The problems of traditional agricultural membranes such as limited thermal insulation performance, weak strength, easy aging, and poor light transmission have been overcome.

Description

technical field [0001] The invention relates to the technical field of agricultural plastic films, in particular to an agricultural greenhouse composite film and a preparation method thereof. Background technique [0002] With the continuous development of agricultural greenhouse films, we can eat our favorite fruits and vegetables on the dining table all year round. Plastic agricultural greenhouse films are more and more recognized and loved by growers, but the requirements for greenhouse films are also increasing. Due to the material formula of traditional agricultural films such as PE film and PVC film, their thermal insulation performance and tensile strength are limited and their light transmission is poor. After a period of use, dustproof performance will decline and electrostatic adsorption Serious, easy to stick to dust, easy to age, weak far-infrared blocking ability and other problems. Contents of the invention [0003] Aiming at the current state of the art, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06C08L67/02
CPCA01G9/1438B29D7/01B32B7/12B32B27/06B32B27/08B32B27/32B32B27/327B32B37/12B32B2307/21B32B2307/30B32B2307/40B32B2307/54B32B2307/71B32B2410/00C08G63/183C08J5/18C08J2323/08C08J2367/02C08J2423/06Y02A40/25
Inventor 谢鑫周洋韦大洋李永勃
Owner KOZA NOVEL MATERIALS CO LTD
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