A plastic film greenhouse is a versatile, innovative greenhouse structure where the main covering material is high-quality plastic film. This type of greenhouse is extensively utilized across various agricultural cultivation sectors and numerous other fields, offering unmatched practicality and efficiency. Its robust design and adaptability make it an indispensable asset for modern agricultural endeavors, ensuring optimal growing conditions and enhanced productivity.
Frame part
Crafted predominantly from robust metal materials such as steel and galvanized pipes, the frame part forms the structural backbone of the greenhouse. These pipes undergo precise cutting, bending, and welding to create a durable skeleton. The diameter and wall thickness are meticulously selected based on the greenhouse's size and its load-bearing design. For instance, smaller greenhouses might utilize steel pipes ranging from 25-32mm in diameter, whereas larger structures demand pipes with greater diameters and thicker walls to ensure maximum stability. This strength is essential to support the plastic films, endure snow, withstand strong winds, and sustain additional loads, guaranteeing long-lasting durability.
Frames are available in various designs, with popular choices being arches and ridges. The arch-shaped greenhouse frame boasts a circular configuration, facilitating even film coverage and uniform stress distribution, while offering a spacious internal environment. Conversely, the ridge greenhouse mimics the contours of a house roof, providing superior drainage and enhanced spatial flexibility, making it ideal for planting methods that require elevated space allowances.
Plastic film
An essential covering material for greenhouses, plastic films come in options like polyethylene (PE) and polyvinyl chloride (PVC). The cost-effective PE film offers excellent flexibility, high light transmittance ranging from 85%-93%, and notable puncture resilience. Conversely, PVC film provides superior thermal insulation with light transmittance between 80%-90%. Despite its slightly higher cost, the PVC option might experience plasticizer leakage over time, impacting its overall performance.
The thickness of plastic films ranges from 0.08-0.2mm, with thicker films boasting enhanced durability albeit at a higher cost. Film coloration varies, with transparent options offering optimal light transmission to aid photosynthesis. Specialty pigment films, like blue-hued varieties, can modify light qualities, thereby promoting specific plant growth processes with unique effectiveness.
Ventilation system
Natural ventilation, a prevalent method for greenhouse air regulation, involves strategically placed vents on side walls or roofs. Side vents may feature manually operated plastic steel windows or rolled film vents, which are conveniently adjustable using film rollers. Meanwhile, roof ventilation employs a ridge vent system, utilizing the natural rise of hot air to facilitate effective cooling and fresh air circulation.
In larger greenhouses, mechanical ventilation systems are often employed for enhanced air circulation. These systems consist of strategically placed fans and ventilating ducts. Typically, a fan is mounted on one side of the greenhouse, with ventilation pipes spreading throughout. This setup ensures uniform distribution of fresh air, although it comes with increased equipment and operational costs due to its high efficiency.
Sunshade system
Central to the sunshade system, the sunshade net can be installed internally or externally. Internal nets are easy to maintain but offer moderate shading, while external nets provide superior shading by blocking sunlight before it hits the plastic film, thereby minimizing internal heat buildup. However, external installations require sturdier structures due to exposure to natural elements like wind and rain.
Sunshade nets are available in various shading rates, such as 40%, 60%, and 80%, tailored to specific plant needs. For plants requiring low light, like edible fungi and flower seedlings, higher shading rates prevent damage from intense sunlight, ensuring optimal growth conditions.
Insulation system
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Lower cost
Compared with glass greenhouses and polycarbonate sheet greenhouses, the construction cost of plastic film greenhouses is much lower. The plastic film itself is cheap, and the frame structure is relatively simple, and the material cost and installation cost are relatively low. This makes plastic film greenhouse in agricultural production more easily accepted by the majority of farmers, especially suitable for small and medium-sized farmers. |
Good light transmission
Transparent plastic film can provide good natural lighting conditions, so that the greenhouse interior light is sufficient, conducive to plant photosynthesis. Moreover, the light transmission performance of plastic film can be adjusted by selecting different film materials and thicknesses to meet the requirements of different plants for light intensity and light quality. |
Construction flexibility
The size and shape of the plastic film greenhouse can be flexibly designed according to the actual site and planting needs. It can be a small simple greenhouse for home gardening or small seedling breeding; It can also be a large multi-storey greenhouse for large-scale vegetable and flower planting. The assembly of the frame structure is relatively simple and the construction period is short. |
1. How long is the delivery time?
According to your greenhouse size and system, the delivery time is usually 15-60days.
2. Can you supply sample?
Small parts can be supplied, but you should pay the express cost.
3. Can your company supply greenhouse design?
Our company can give greenhouse design according to your land and plan after deposit. And we can give simple drawing before signing contract.
4. How to install greenhouse ?
Firstly we prepare the material and send the material to your city.
After your customs clearing, we send 2-4 engineers or all workers to guide to install.
If you want to save money, we only send engineers, and you match local workers.
If you think it is hard to build the greenhouse, we also can send engineers and workers to install for you.
5. When installing, what cost should we pay?
Our engineers and workers visas and round-trip tickets, their foods and accommodation, their communication
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