Greenhouse Plastic Film

1.Basic Properties and Characterisitics

1.1 Material Composition

1.2 Physical Properties

1. Thickness Range
   1. Seasonal films: 30-100μm
   2. Multi-season films: 100-200μm
   3. Long-life films: 180-250 μm
   4. Regional Variations: Thinner in warm climates(60-120μm), thicker in cold regions(150-220μm)
   5. Thickness tolerance: ±5% within roll, ±10% between manufacturing batches
2. Optical Properties

   Property	Standard Film	Diffused Film	Thermal Film
   PAR Transmission (400-700 nm)	85-92%	80-88%	82-89%
   UV Transmission (280-400 nm)	15-80%	10-70%	5-60%
   IR Transmission (7-14 μm)	60-80%	60-80%	20-40%
   Haze	10-30%	50-80%	20-40%
   Light Diffusion	20-30%	60-85%	30-50%

3. Mechanical Properties

   Property	LDPE	LLDPE	EVA (12% VA)
   Tensile Strength (MD/TD, MPa)	20-28/16-24	35-45/25-35	25-32/20-28
   Elongation at Break (MD/TD, %)	300-500/400-600	600-800/700-900	500-700/600-800
   Tear Resistance (MD/TD, g/μm)	2-4/8-12	8-12/15-25	5-10/12-20
   Dart Impact Strength (g/μm)	2-4	6月10日	8月15日
   Puncture Resistance (N/mm)	10-20	25-40	30-45

4. Thermal Properties
   1. Operating temperature range: -40°C to +60°C (standard films)
   2. Heat retention coefficient: 15-20% (standard film), 55-65% (thermal film)
   3. Thermal resistance (R-value): 0.83-0.87m²·K/W (single layer), 1.4-1.7 m²·K/W (double layer with air gap)
   4. Temperature difference (inside vs. outside): 1-3°C (standard film), 3-8°C (thermal film) during night
   5. Heat capacity: 1.9-2.3 kJ/kg·K (PE films)
5. Aging and Durability
   1. Service life: 1 season (6-9 months) for standard film, 2-3 years for multi-season 4-5+ years for long-life films
   2. UV degradation rate: 5-10% loss in tensile strength per month of exposure without stabilizers
   3. Retention of light transmission: 90-95% after 1 year, 80-85% after 3 years, 70-75% after 5 years
   4. Weatherability (desert conditions): Service life reduced by 30-50%
   5. Cold region performance: Becomes brittle below -30°C for standard PE, -40°C for premium films

1.3 Chemical Properties

• Chemical Resistance

  Chemical Agent	LDPE	EVA	PVC
  Acids (weak)	Excellent	Excellent	Good
  Acids (strong)	Good	Good	Poor
  Alkalis	Excellent	Excellent	Good
  Alcohols	Good	Fair	Good
  Pesticides	Good-Excellent	Good	Good
  Chlorinated compounds	Poor	Poor	Poor
  Petroleum products	Poor	Poor	Poor

• Surface Properties
  • Surface energy: 30-32mN/m (LDPE), 33-36 mN/m (EVA)
  • Water contact angle:90-100° (untreated), 50-70° (with anti-fog additives)
  • Surface resistivity:10¹²-10¹⁵ Ω/square
  • Coefficient of friction: 0.2-0.3 (untreated), 0.1-0.15 (slip additives)
  • Dust adhesion index: 6-8 (standard film), 2-4 (anti-dust films), scale 1-10

2.Types and Classification

2.1 Classification by Functional Properties

• Standard (clear) Films:
  • Composition: Primarily LDPE/LLDPE
  • Light transmission: > 85% PAR
  • Haze value:
  • Applications: Basic crop protection, short growing seasons
  • Market share: 35-40% of greenhouse film market
  • Thermal/IR Films
    • Composition: PE/EVA with mineral IR additives or PE/EVOH layers
    • Wavelength blocking: 7-14μm (far infrared)
    • Heat retention improvement: +30-50% compared to standard film
    • Night temperature benefit:+2-5°C versus standard film
    • Cost premium: 20-35% over standard film
  • Diffused Light Films
    • Composition: PE/EVA with light diffusion additives(typically CaCO₃, talc)
    • Haze value: 50-80%
    • Direct/Diffuse light ratio: 30/70 to 15/85
    • Yield improvement: 5-15% for shade-intolerant crops
    • Light penetration into canopy: 30-50% deeper than standard films
  • UV-Blocking Films
    • UV transmission:
    • Pest reduction: 30-60% decrease in certain insect populations
    • Fungal disease reduction: 20-45% less powdery mildew incidence
    • Limitations: May reduce pollinator activity, certain crops require UV

• Surface tension: >50 mN/m (treated surface)
• Water contact angle:
• Light transmission benefit: +5-10% compared to drip-covered standard film
• Condensation pattern: Film formation rather than droplets
• Duration of effectiveness: 1-3 years
• Colored and Spectral-Selective Films
  • Types: Red, blue, pearl, silver, fluorescent
  • Red Films: R:FR ratio 1.1-1.4 (standard film 1.0-1.1)
  • Blue Films:Enhanced B:R ratio, typically 0.45-0.55 (standard 0.25-0.35)
  • Pearl/white films: Reflection 30-45% (vs.10-12% for clear)
  • Applications: Plant height conrol, flowering manipulation, insect management
  • Yield effects: Highly crop-specific, -10% to +15% depending on crop/color

2.2 Classification by Polymer Structure

• Single Polymer Films
  • Primarily LDPE (70-80% of market)
  • Thickness: 30-200μm
  • Manufacturing: primarily blown film extrusion
  • Cost: lowest among greenhouse films
  • Service life: 6-12 months without additives
• Copolymer Films
  • EVA (vinyl acetate 5-18%)
  • EBA (butyl acrylate 5-15%)
  • Thermal properties: improved over homopolymers
  • Clarity: superior to pure PE films
  • Flexibility at low temperatures: remains flexible to -30°C with 12% VA content
• Multi-layer films
  • Layer bonding: coextrusion with tie layers when needed
  • Performance: each layer optimized for a specific function
  • Market trend: growing at 12-15% annually, faster than single-layer
  • Cost premium: 25-50% over monolayer films

2.3 Classification by Duration/lifespan

1. Seasonal Films(6-12months)
   1. Composition: primarily LDPE with basic UV stabilizers
   2. Thickness: 30-100μm
   3. UV stabilizer package: 0.5-1.0%
   4. Applications: Annual crops, low-cost operations
   5. Regional usage: dominant in developing countries, southern regions
2. Multi-Season Films (2-3 years)
   1. Composition: LDPE/LLDPE blends, often with EVA
   2. Thickness: 120-180μm
   3. HALS concentration: 0.8-1.5%
   4. Light transmission after 24 months: minimum 80% of initial
3. Long-life films(4-5+ years)
   1. Composition: premium PE blends with EVA/EBA, multi-layer
   2. Thickness: 180-250μm
   3. UV stabilizer systems: complex packages with synergistic effects
   4. Metal deactivators: 0.1-0.3% to prevent catalyst-induced degradation
   5. Warranty periods: Typically 4-5 years in temperate climates

3.Manufacturing Process

3.1 Basic Production Methods

• Blown Film Extrusion
  • Market share: 85-90% of greenhouse films
  • Extrusion temperature: 160-220°C
  • Die Gap: 0.8-2.5 mm
  • Blow-up ratio (BUR): 1.5-3.0
  • Line speed: 20-150 m/min depending on thickness
  • Air ring cooling systems: Dual-lip or triple-lip designs
• Cast Film Extrusion
  • Market share: 10-15% of greenhouse films
  • Applications: mainly specialized high-clarity films
  • Extrusion temperature: 180-240°C
  • Chill roll temperature: 20-40°C
  • Advantages: Superior optical clarity, thickness consistency
  • Limitations: generally lower impact strength than blown films
• Multi-layer Coextrusion
  • Layer thickness ratio control: ±5% accuracy
  • Interfacial surface quality: critical for optical properties
  • Processing challenges: matching rheological properties between layers
  • Layer adhesion strength：typically 3-5N/15mm for compatible polymers

3.2 Post-Production processing

• Corona Treatment
  • Surface energy increase: from 31-32mN/m to 42-56 mN/m
  • Treatment levels: 38-45 dyne/cm for printing applications
  • Aging of treatment: 30-50% loss of effectiveness within first month
  • Applications: improving anti-fog performance, printability
  • Power requirements: 2-5W/m²/min
• Surface Coating Application
  • Coating types: anti-fog, anti-dust, anti-viral
  • Application methods: offline roller coating, spray systems
  • Coating thickness: 1-5μm
  • Adhesion requirements: 4B rating (ASTM D3359)
  • Durability: 1-3 growing seasons
• UV Curing Processes
  • Applications: specialized hardcoatings, anti-abrasion treatments
  • UV dose: 100-300mJ/cm²
  • Cure speed: 5-30 m/min
  • Coating Thickness: 3-15μm
  • Marketing segment: Premium greenhouse films, 2-5% market share

FDD 100/120/150/180/200/250微米抗滴水5层UV耐用透明温室塑料膜

$ 0.4 /Square Meter

最小起订量: 1Square Meter

Product Model: FDD-greenhouse UV plastic film

供应商简介

Ningbo Feidoodoo E-Commerce Co., Ltd

成立时间: 2019-10-10

公司规模: 500

获取最优价格

4.Applications and Usage Methods

4.1 Greenhouse Structures and Installation

4.2 Crop-specific applications

• Vegetable Production
  • Tomato: diffused light films increase yield 7-12%, improve quality
  • Cucumber: anti-drip films critical, 8-15% yield increase
  • Pepper: thermal films extend season by 2-4 weeks
  • Leafy greens: UV- Blocking films reduce tipburn by 30-60%
  • Strawberry: Red-tinted films increase sugar content by 5-12%
• Ornamental Production
  • Flowering Regulation: blue-tinted films increase flowering in short-day plants
  • Plant height control: Far-red filtering films reduce stem elongation 15-25%
  • Rooting improvement: pearl films increase root mass 10-20% in cuttings
  • Quality factors: UV-transmitting films improve color development in read varieties
  • Season extension: thermal films allow 3-5 weeks earlier production in spring
• Speciality Applications
  • Medicinal cannabis：Diffused films with UV-A transmission optimize cannabinoid profiles
  • Microgreen production: blue-enhanced films increase anthocyanin content 25-40%
  • Tissue culture hardening: Gradient UV-permeable films for acclimatization
  • Nursery propagation: Anti-corrosion films with specialized additives

5.Upstream and Downstream Industry Relationships

5.1 Upstream Raw Material Supply Chain

5.1a Polymer Resin Production

• LDPE global production: ~25 million tons/year, 5-8% used in agricultural films
• LLDPE for films: C4, C6, and C8 co-monomer types
• Resin pricing factors: Ethylene price (60-70% of cost), energy costs (10-15%)
• Price volatility: PE film-grade resin varies 15-30% annually
• Major producers: ExxonMobil, SABIC, Dow, LyondellBasell, INEOS, Sinopec
• Regional capacity: Asia-Pacific (45%), North America (25%), Europe (20%), others (10%)

5.1b Raw Material Quality Impact

• Resin Melt flow rate(MFR) variation: ±10% typical between batches
• Molecular weight distribution effects: Narrower MWD improves optical properties, reduces mechanical strength
• Catalyst residue effects: Titanium residues accelerate UV degradation
• Additive compatibility issues: Interaction between HALS and Sulfur-containing pesticides
• Quality control parameters: Gel count 

5.1c Supply Chain Challenges

• Polymer Supply volatility: 15-25% price fluctuations annually
• Additive lead times: specialized additives 4-12 weeks
• Force majeure incidents: Average 3-5 major supply disruptions annually in PE industry
• Raw material traceability: increasingly required for food-contact applications

5.2 Manufacturing Ecosystem

5.3 Downstream Distribution and End Users

5.3b End User Segmentation

• By operation size:
  • Large commercial (>10 hectares): 25-30% of market volume
  • Medium commercial (1-10 hectares): 40-45%
  • Small Commercial (
  • Research/institutional: 5-10%
  • By crop type:
    • Vegetables: 55-60%
    • Ornamentals: 15-20%
    • Fruits & berries : 10-15%
    • Nursery/propagation: 5-10%

  5.3c User requirements and Trends

  • Film Selection drivers(ranked):
    • Durability/lifespan
    • Cost-performance ratio
    • Optical properties
    • Thermal properties
    • Special functionalities
  • Service requirements
    • Technical support: Critical for 60-70% of medium/large users
    • Warranty terms: 85-90% of users consider essential
    • Local availability: 50-60% won't switch if requires import
    • Custom dimensions: required by 30-40% of users
  • Technology adoption patterns
    • Early adopters: 10-15% of users
    • Majority adopters: 45-55%
    • Late adopters: 30-40%