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Forming Fabric
Double Layer Forming Fabric
Model: DL-3800 · Double Layer
PAPTEX Double Layer Forming Fabric strikes the ideal balance between performance and cost-effectiveness for medium-speed paper machines. The dual-layer construction features a fine paper-side warp for excellent fiber retention and sheet smoothness, supported by a coarser wear-side for durability.
400 ~ 700 CFM
Air Permeability
Up to 170°C
Heat Resistance
Suitable Paper Grades
📦Packaging🏗️Kraft📰Corrugated📋Duplex Board
Founded in 1979
ISO 9001 Certified
30+ Export Countries
24-Hour Response
Best Applications
Engineered for these paper grades and machine conditions
Why Choose PAPTEX
Cost-Effective Performance
Excellent performance-to-price ratio for medium-speed applications.
Good Drainage
Optimized weave pattern for efficient water removal at medium speeds.
Versatile Application
Suitable for packaging, kraft, corrugated, and board grades.
Engineering Overview
PAPTEX Double Layer Forming Fabric strikes the ideal balance between performance and cost-effectiveness for medium-speed paper machines. The dual-layer construction features a fine paper-side warp for excellent fiber retention and sheet smoothness, supported by a coarser wear-side for durability.
Designed for packaging, kraft, corrugated, and duplex board grades at speeds of 600–1,200 m/min, this fabric delivers consistent drainage uniformity across the full machine width. The optimized weave pattern provides 400–700 CFM air permeability with ≥60 kN/m MD tensile strength — more than sufficient for standard fourdrinier and top-former configurations.
For mills seeking to upgrade from single-layer fabrics without the investment of full SSB technology, Double Layer fabric offers a compelling step up in formation quality, fiber retention, and service life at a moderate price point.
Verified Evidence
Evidence-Based Quality
Every claim backed by test reports, certifications, and factory data.
Test Report
EV-TEST-002Quantified + Conditioned (L4)
Tensile Strength Testing — ISO 9073-3
Per ISO 9073-3 standard N/cm · MD and CMD, 23°C ± 2°C, 50% ± 5% RH
Source: In-house universal testing machineEV-TEST-003Quantified + Conditioned (L4)
Hydrolysis Resistance Testing
Retained ≥85% tensile after 150 days % retention · at 120-160°C saturated steam
Source: Accelerated aging test, internal lab protocol PTL-027EV-TEST-004Quantified + Conditioned (L4)
Abrasion Resistance Testing — ISO 12947
Per ISO 12947 (Martindale) cycles to failure
Source: In-house Martindale abrasion testerEV-TEST-001Quantified + Conditioned (L4)
Air Permeability Testing — ISO 9237
Per ISO 9237 standard CFM / l/m²/s · at 100 Pa differential pressure
Source: In-house laboratory, calibrated monthlyCertification
EV-CERT-001Quantified + Conditioned (L4)
ISO 9001:2015 Quality Management System
ISO 9001:2015
Source: ISO 9001:2015 Certificate, issued by SGSEV-CERT-002Quantified + Conditioned (L4)
ISO 14001:2015 Environmental Management System
ISO 14001:2015
Source: ISO 14001:2015 Certificate, issued by SGSMaterial Cert
EV-MAT-001Quantified + Conditioned (L4)
Teijin PET Monofilament Certification
Teijin PET — hydrolysis-resistant grade
Source: Teijin material certification, batch tested quarterlyEV-MAT-002Quantified + Conditioned (L4)
Nextrusion Polyamide Certification
Nextrusion PA6 — high-tenacity grade
Source: Nextrusion material certificationCase Study
EV-CASE-003Quantified + Conditioned (L4)
Kraft Paper Mill — Double Layer Life Extension
30-50 % longer life · vs previous single layer fabric, at 500 m/min, 150-250 g/m² kraft
Source: Case study: Southeast Asia kraft paper mill, 2024All evidence L3 or L4 — no unverified claims · 9 evidence items · 9 ⭐ L4 (Gold Standard)
ISO 900147+Years30+Countries120,000m²Factory900,000 m²Annual Capacity29+Patents
Trust Evidence
6 Pillars of Trust
Every claim verified, every process documented, every shipment traceable.
Company Profile
Founded 1979, 500+ employees, 38+ senior engineers
1979
Founded
500+
Employees
EV-CUST-003EV-FACT-002
Manufacturing Capacity
900,000 m² annual capacity, 8 lines, TEXO (Sweden) + JAGER (Germany) equipment
500,000 m²
Forming
400,000 m²
Dryer
EV-PROD-001EV-PROD-002
Quality Inspection
7 inspection stages, compliant with ISO 9001:2015, ISO 14001:2015, ISO 9237
7
QC Stages
6
Standards
EV-TEST-001EV-TEST-002
Certifications
ISO 9001:2015, ISO 14001:2015, ISO 45001:2018
EV-CERT-001EV-CERT-002
Global Markets
Export to 30+ countries, 70%+ export ratio
30+
Countries
70%+
Export
EV-CUST-001EV-CUST-002
After-sales Support
On-site installation, 24/7 multilingual technical support, fast spare parts delivery worldwide
Standard Warranty
Warranty
5
Services
EV-DEL-004EV-DEL-005
All trust pillars backed by verified evidence in the PAPTEX Evidence Database.
Technical Specifications
| Structure Type | Double Layer |
| Material | 100% Polyester Monofilament |
| Air Permeability | 400 ~ 700 CFM |
| Tensile Strength (MD) | ≥ 60 kN/m |
| Heat Resistance | Up to 170°C |
| Seam Type | Pin Seam |
Need a custom specification?
Our engineers can tailor the fabric to your machine parameters.
Technical Structure
Cross-sectional diagram of Double Layer Forming Fabric — Double Layer. Engineered for optimal drainage, fiber support, and durability.
Figure: Double Layer Forming Fabric cross-sectional structure diagram (schematic)
Performance Metrics
Key performance indicators measured under standard laboratory conditions.
Air Permeability400~ 700 CFM
Continuous Temp.170°C
Measured per ISO 9237 / ISO 9073 standards. Actual performance may vary with machine conditions.
Next Steps
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Full technical specifications, performance data, and installation guidelines.
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Get a sample piece for evaluation. Standard A4 size, delivered in 5-7 days.
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Full lab test report: ISO 9237 permeability, ISO 9073 tensile, ISO 12947 abrasion.
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See how this product compares with alternatives. Side-by-side technical analysis.
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Get a personalized recommendation from a PAPTEX application engineer.
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Downloads
Technical documentation for Double Layer Forming Fabric
Technical Comparison
Compare Center →Common Technical Route Comparisons
Compare technical routes across all machine sections to find the best solution.
SSB Triple Layer
Premium ($$$)VS
Double Layer
Mid-Range ($$)✓ Best sheet quality — no bottom weft marking✓ Good balance of quality and cost
SSB Triple Layer
Premium ($$$)VS
Single Layer
Economy ($)✓ Best sheet quality — no bottom weft marking✓ Lowest initial cost
Double Layer
Mid-Range ($$)VS
Single Layer
Economy ($)✓ Good balance of quality and cost✓ Lowest initial cost
Frequently Asked Questions
Common questions about Double Layer Forming Fabric
Double Layer fabric provides significantly better fiber retention and sheet formation than single layer, with approximately 30% longer service life. The trade-off is slightly lower drainage capacity, which is usually offset by better formation quality.
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SSB Triple Layer Forming Fabric
PAPTEX SSB (Surface-Support-Binder) Triple Layer Forming Fabric represents the pinnacle of forming fabric technology. Engineered with a proprietary self-binding weave structure, it combines a fine paper-side surface for superior fiber support and sheet formation with a robust wear-side for extended service life. The integrated binder yarn design eliminates separate binding layers, reducing caliper while maintaining exceptional dimensional stability. With six customizable models (LW90110, LW4080, LW3868, JLW3868, LW3560, LW3252), this fabric is tailored to your specific machine parameters — whether running tissue at 1,500+ m/min or kraft at medium speeds. The high air permeability range (10,000–21,500 m³/m²h) enables aggressive dewatering, reducing steam demand in the dryer section. Trusted by global paper mills from Indonesia to Europe, SSB Triple Layer delivers measurable improvements: 50% speed increase, 60% longer service life, and 40% fewer unplanned stops.
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2.5-Layer Forming Fabric
PAPTEX 2.5-Layer Forming Fabric bridges the gap between double-layer economy and full SSB performance. The innovative "2.5-layer" design adds an extra support weft layer to a double-layer base, significantly improving cross-machine stability and fiber support without the cost premium of a full triple-layer or SSB construction. With 400–650 CFM air permeability, ≥70 kN/m MD tensile strength, and heat resistance up to 175°C, this versatile fabric handles packaging, kraft, corrugated, white board, and duplex board grades at medium to high speeds. The extra support weft also extends service life by 20–30% compared to standard double-layer fabrics. An excellent upgrade path for mills currently running double-layer fabrics who want better formation stability and longer life without the investment of SSB technology.
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