Plastic film greenhouse factory direct selling
1. Specification of Green house Film
|The Specification of Plastic Film ||UV 2792 AD|
|Mechanical Capacity||Test Method||Index|
|Tensile Breaking Strength(Mpa)||ASTM D882|| |
|Breaking Elongation(%)||ASTM D882|| |
|Impact Strength(g)||ASTM D1709||1000|
|Optical Properties|| || |
|Transmittance||Internal Method|| ≥91|
2. Description of Film Green house
2.1 Best opening roof system on market
2.2 Operation on arched roofs from 20' to 35' in width. Available in 12' increments
2.3 Roll A roof ™ is installed on an arched greenhouse frame. Customer is not locked into a design made solely for retractable roof. The flexibility exists to use greenhouse in a conventional way as market may force a change in crop or growing methods in the future.
2.4 Poly Covering is huge advantage. Roll A roof™ uses poly vs. fabric. If good light transmission is necessary for crop, customer may not be able to grow using a retractable roof, which can be like growing under a shade house.
2.5 Greenhouse frames are sturdier than most retractable frames and so can meet building codes.
2.6 Greenhouse frames have gutters for roof access.
2.7 Greenhouse has plant-hanging capacity. Retractable roof frames usually require a separate infra-structure to support crop.
2.8 Arch sheds rain and snow better.
2.9 Arch roof has a greater air mass for more stable environment.
Better seal for winter heat retention.
Roll A roof ™ has less maintenance issues than most other retractable roofs
3. Heating System of Film Greenhouse
The most economical option for heating greenhouses, forced air unit heaters are easy to install and provide low initial cost and high efficiency. Heaters are available in natural or propane gas. Stacks and heater hanging kits are available. Distribution of the heat produced by forced air unit heaters is facilitated by Horizontal fans or less commonly, fan jets. The best application for your facility is accomplished with various sizes, quantities, and manufacturers of fans and fan jets.
4. About Nordahl
Nordahl has had you (and your crop) covered for over 20 years. We specialize in quality commercial greenhouses and offer the broadest possible spectrum of model and function. We have greenhouses in many international locations. Come see why our customers rate us as one of the best greenhouse manufacturers. All of our greenhouses are designed to optimize your Natural Ventilation needs.
Q1. Can you assist me with assembly?
Nordahl's is happy to assist in the assembly of Nordahl's manufactured product. To help with step-by-step assembly, Nordahl has expertly designed multiple installation guides to help you easily build and install Nordahl's products. For your convenience, click here to find the appropriate installation guide to view and/or download.
For additional help, please feel free to contact our technical support team via email or call us toll free at +86 17685852093
Q2.What size Poly Film should I order?
Selecting the correct size poly film to order (specifically width) can be challenging. We've designed a helpful guide to follow, to ensure that you are ordering the appropriate size poly film for the roof, sides and ends of your greenhouse.