PO Greenhouse Film for Chile's High-Altitude Tomato Valleys
2026-08-28
PO Film · Tomatoes
PO Greenhouse Film for Chile’s High-Altitude Tomato Valleys
Chilean tomato growers in high-altitude valleys face sharp day-night temperature swings and strong UV. This case shows how PO 3-layer film holds night heat, resists UV aging and keeps production stable through the season.
📍 Chile🍅 Tomatoes🏔 High Altitude🧱 PO 3-Layer
Case at a Glance
Quick Facts
CropGreenhouse tomatoes
FilmPO 3-layer greenhouse film
RegionChile’s central highland valleys
DriverNight heat retention & UV life
OutcomeStable nights, longer film life
RelationshipRepeat orders each season
PO Film at the Heart of Highland Tomato Growing
At 800–1,500 m above sea level, valley greenhouses cool down fast after sunset. A film that holds night heat protects flowering and fruit set, while strong UV in the day punishes films with weak stabilizers. PO 3-layer film answers both: a thermal layer keeps warmth in, and a proper UV package keeps the sheet from embrittling.
Growers choose PO for the multi-season economics – one PO cover replaces two or more PE covers, with steadier night temperatures in between.
Typical Supply for a Highland Tunnel
Typical Supply
Width range
Cut to tunnel arch
Up to 16 m
Service life
UV-stabilized PO
3–5 Years
Structure
Co-extrusion line
3–5 Layer
Annual capacity
Factory-direct supply
60,000 t/y
Highland-Ready PO Films
PO 3-Layer Film
High light transmission with a thermal layer that holds night heat in cool valleys.
UV-Stabilized PO
Extended stabilizer package for strong sun – keeps the film flexible for 3–5 seasons.
Anti-Drip PO
Coated or blended anti-drip treatment for humid nights – less condensation on the canopy.
Highlands Built for Tomatoes
Chile’s tomato greenhouses run from the central coast to the highland valleys, where the same tunnel can see 28°C by day and 6°C by night. Managing that swing is the difference between steady fruit set and blossom drop – and the cover film is the first tool growers reach for.
Choosing PO film for highland tomato greenhouses
Area
What was checked
Why it matters
Night temperature
Thermal layer holds heat
Protects flowering & fruit set
UV intensity
Stabilizer package matched
Film lasts 3–5 seasons
Humid nights
Anti-drip option added
Less condensation on canopy
Why PO Pays Back on Highland Tomatoes
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Stable Nights
The thermal layer slows heat loss after sunset, smoothing the night temperature curve.
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UV Life
A proper stabilizer package keeps the film strong through 3–5 seasons of strong sun.
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More Light In
Higher light transmission than standard PE means more photosynthetically active light for yield.
Plan Your PO Film Order
Tell us your tunnel size, valley altitude and season plan and we will recommend the PO spec – width, UV level and anti-drip – from single rolls to container orders.
Quick Answers
Highland Tomato Film Questions
PO film combines higher light transmission with a thermal layer and a 3–5 year life. In a valley climate with big day-night swings, the heat retention and multi-season economics usually beat PE.
Condensation dripping onto foliage raises humidity and disease pressure. Anti-drip film runs water down the walls, keeping the canopy drier.
With a proper UV stabilizer package, PO film typically lasts 3–5 years in most climates. In extreme UV regions the guarantee should be quoted against your local UV index.
Greenhouse film is produced up to 16 m wide, cut to your tunnel arch, with custom roll length and gusset options.
Three layers are melted together in one pass, putting the stabilizer and thermal additives exactly where they work – a stronger, more even film than a single-layer sheet.
Yes – sample rolls are available so you can test the film on one tunnel bay before a full order.
