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Blow-moulded film interface molecular film and production process

A technology of blown film and molecular film, applied in the direction of coating, etc., can solve the problems of wasting light sources, polluting the environment, not lasting, etc., and achieve the effect of increasing light transmittance

Active Publication Date: 2010-05-19
聊城华塑工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing polyolefin film has a high interfacial surface tension and is hydrophobic. If it is used in an agricultural greenhouse, it will form dense small droplets, which will affect light transmission and reduce production; Fog droplets, but the fog in the shed is generated due to the precipitation of dripping agent; the method of adding dripping anti-fogging agent temporarily solves the problem, but it will fail within 5 months; in addition, adding ultraviolet shielding agent only shields but does not convert, Waste of light source; add phosphor to make the light conversion not lasting, and the cost of time is too high; in addition, adding too many additives will reduce the transparency and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Use a three-layer blow molding agricultural film unit to produce an agricultural film with a width of 7 meters and a thickness of 0.08mm, and an inner layer of an interface molecular film:

[0023] Common blown film processes are known. According to the formula of long-term dripping anti-fog and light conversion:

[0024] Polyethylene film 100m 2

[0025] Silane surfactant 0.2-0.7g

[0026] 20% nano-scale silicon or aluminum solution 7-12g

[0027] Distilled water 200-1000g

[0028] Add a small amount of water to the surfactant and the nanoparticle solution respectively and stir, then add enough distilled water to mix together, and stir evenly. Then inject the mixed liquid into the stainless steel barrel, and use a high-pressure pump with a pressure ≥ 8MP to inject it into the rotary splitter through precise metering; spray it in the film bubble through a high-pressure airless nozzle; During the upward traction of the film bubble, the gap of the direct ...

Embodiment 2

[0029] Example 2: Use a three-layer blow molding agricultural film unit to produce an agricultural film with a width of 7 meters and a thickness of 0.08mm, and the outer layer is prepared with an interface molecular film:

[0030] Common blown film processes are known. According to the recipe for light shielding and light conversion:

[0031] Polyethylene film 100m 2

[0032] Silane surfactant 0.2-0.7g

[0033] 20% nanoscale titanium or zinc solution 7-12g

[0034] Distilled water 200-1000g

[0035] Add a small amount of water to the surfactant and the nanoparticle solution respectively and stir, then add enough distilled water to mix together, and stir evenly. Then inject the mixed solution into the stainless steel barrel, and use a liquid pump with a pressure of ≥0.2MP and an air pump with a pressure of ≥0.6MP to inject it into the fixed splitter through precise metering; spray it outside the membrane bubble through the gas-liquid nozzle; mainly direct the droplets atta...

Embodiment 3

[0036] Embodiment 3: with the single roll blown film that has been produced, double-layer prepares the interfacial molecular film with printing:

[0037] According to the formula to reduce surface tension and wettability angle:

[0038] Polyethylene film 100m 2

[0039] Quaternary ammonium salt surfactant 0.15-0.55g

[0040] 20% nano-scale silicon solution 6-10g

[0041] Distilled water 200-1000g

[0042] Add a small amount of water to the surfactant and the nanoparticle solution respectively and stir, then add enough distilled water to mix together, and stir evenly. Then inject the prepared liquid into a liquid tank; place the single-roll film that has been made on the driven roller to release the film, and put the polyolefin film into the liquid tank through the unrolling device for double-sided immersion treatment, so that The self-assembled ordered interfacial molecular film is generated; then the film is introduced into the dryer through a guide roller, and the finis...

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Abstract

The present invention discloses the formula and production process of a kind of blow-molding film-interface molecular film, which belongs to chemical field. the formula of blow-molding film-interfacemolecular film is composed of high-activity surfactant, nanometer micro-powder of silicon, titanium, zinc, aluminum, and distilled water. There are two kinds of processes for preparing the molecular film: a) one prepares organized molecular film on the interface during the blow-molding process of polyolefine film, and uses the central rotating gas-liquid distributor to atomize the prepared liquidonto the bubble surface of the film for interface processing; b) the another prepares organized molecular film on the surface of prepared polyolefine film, which includes,by using 1 to 3 slots, the prepared liquid is placed in the slots respectively for processing the immersed interface of polyolefine film. The present invention which selects the green and non-pollution materials, can thoroughlysolve the problems of drops flowing and fog dispersing, effectively shield UV for reducing its damage to polyolefine film, and transform UV into the red light which is beneficial for plants, and increase the transparency of polyolefine film.

Description

technical field [0001] The invention relates to a method for preparing an extremely thin molecular film at the interface of a polyolefin film, in particular to a blown film interface molecular film and a production process thereof, belonging to the field of chemical industry. Background technique [0002] The existing polyolefin film has a high interfacial surface tension and is hydrophobic. If it is used in an agricultural greenhouse, it will form dense small droplets, which will affect light transmission and reduce production; Fog droplets, but the fog in the shed is generated due to the precipitation of dripping agent; the method of adding dripping anti-fogging agent temporarily solves the problem, but it will fail within 5 months; in addition, adding ultraviolet shielding agent only shields but does not convert, It wastes light source; adding fluorescent powder makes the light conversion not lasting, and the cost is too high for a long time; in addition, adding too many ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/54C08J7/04C08J5/18C08L23/00B29C49/00C08K3/36C08K3/22
Inventor 武庆东郑林陈晓俊
Owner 聊城华塑工业有限公司
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