Antifog paddy rice sprout cultivation film

A technology for rice seedling raising and anti-fog, applied in the direction of plant protection cover, etc., can solve the problems of poor anti-fog effect, rotten seedlings, etc., and achieve the effects of increasing light transmittance, raising seedling temperature, and excellent and lasting hydrophilic effect.

Inactive Publication Date: 2012-08-08
SHAOXING HONGRUN FIRE CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides an anti-fog rice seedling raising film to solve the problem that the traditional seedling raising film has poor anti-fog effect, the mist is easy to accumulate on the surface of the film to form water droplets, and the seedlings are rotten after the water droplets drop

Method used

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  • Antifog paddy rice sprout cultivation film
  • Antifog paddy rice sprout cultivation film
  • Antifog paddy rice sprout cultivation film

Examples

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Embodiment Construction

[0027] film preparation

[0028] (1) Put each raw material into a high-speed mixer according to the ratio shown in Table 1, knead until the temperature reaches 105°C and discharge, put it into a low-speed cooling mixer and cool to normal temperature to obtain a mixed powder;

[0029] (2) Put the mixed powder into the hopper of the extruder, the hopper is equipped with a forced feeding device to prevent the powder from bridging, and the hopper seat strengthens the water cooling device to prevent the powder from being heated and stuck;

[0030] (3) Extrusion blow molding adopts Φ120 extruder, the screw length-to-diameter ratio is 1:28, the screw type is BM type (separate type), and the temperature control is (five-zone heating of the fuselage): 140°C in the first zone and 150 in the second zone ℃, 160℃ in the third zone, 170℃ in the fourth zone, 175℃ in the fifth zone, 165℃ in the flange, and 180℃ in the machine head;

[0031] (4) Winding to obtain a finished film with a thickn...

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Abstract

The invention discloses an antifog paddy rice sprout cultivation film. Raw materials of the film comprise, by weight, 100 parts of a PVC resin, 35-55 parts of a plasticizer, 0.5-5 parts of a heat stabilizer, 0.5-5 parts of polyglycerol monostearate, 0.5-5 parts of anhydrosorbitol monostearate, 0.1-2 parts of monoglyceride stearate, 0.1-1.5 parts of bisphenol A and 0.05-1 part of an ultraviolet absorbent. According to the invention, three surfactants with different HLB values are added to the PVC resin, and the three surfactants have a synergistic effect, so the surface of the PVC film has excellent and lasting hydrophilicity, a case that fog forms a uniform water film on the surface of the PVC is promoted, and the light transmittance of the PVC film is increased, thereby the sprout cultivation temperature in a greenhouse is improved.

Description

technical field [0001] The invention relates to a PVC film, in particular to an anti-fog rice seedling raising film. Background technique [0002] The main component of PVC is polyvinyl chloride, which is a transparent body with blue fluorescence and is shiny. Transparency is far better than polyethylene and polypropylene, and worse than polystyrene. Depending on the amount of additives, it can be divided into soft and hard PVC. Soft products are soft and tough, and feel sticky. The hardness of hard products is higher than that of low-density polyethylene. , and lower than polypropylene, there will be whitening at the inflection. [0003] PVC film is currently recognized as a good thermal insulation material for greenhouses. Its molecular structure determines that its air transmittance and infrared transmittance are much lower than polyethylene, and its transparency is much higher than polyethylene, allowing more sunlight. It is irradiated into the greenhouse, so compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/00C08K5/12C08K5/103C08K5/58A01G13/02
Inventor 李玉浜任洪芳
Owner SHAOXING HONGRUN FIRE CONTROL EQUIP
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