1. Product Overview
HDPE DGDB-6097 is a high molecular weight, high-density polyethylene copolymer designed specifically for tubular blown film extrusion. Manufactured by Daqing Petrochemical under CNPC’s Kunlun brand, this grade delivers exceptional film strength with excellent drawdown at high extrusion rates.
Every China HDPE supplier recognizes DGDB-6097 as a benchmark film-grade resin in the Asian polyethylene market. Its broad molecular weight distribution and optimized density combine to produce films with outstanding toughness, stiffness, and moisture barrier properties. Converters across the Middle East, Southeast Asia, Africa, and South America rely on this grade for high-volume bag production.
2. Key Product Features
2.1 Superior Mechanical Strength
DGDB-6097 delivers a tensile yield strength exceeding 22 MPa and elongation at break surpassing 650%. These mechanical properties translate to finished products with high load-bearing capacity and puncture resistance. Shopping bags and carrier bags made from this grade withstand heavy contents without tearing or stretching out of shape.
2.2 Excellent Processability at High Output
The resin is engineered for stable bubble formation at high extrusion rates on conventional blown film lines. Its optimized melt rheology ensures consistent gauge control and minimal film thickness variation across the bubble circumference. Processors can push throughput without sacrificing film quality.
2.3 Outstanding Drawdown Performance
DGDB-6097 achieves thin-gauge films down to 8–12 microns without pinholes or film breaks. This downgauging capability reduces per-bag material consumption while maintaining the mechanical integrity required for practical end-use.
2.4 Clean Gel Performance
With fisheye counts consistently below 2 per 1520 cm² at 0.8 mm and below 5 at 0.4 mm, DGDB-6097 produces films with excellent optical clarity and surface smoothness. This low-gel characteristic is critical for printed film applications where surface defects compromise brand visibility.
2.5 Moisture and Chemical Resistance
The resin provides strong resistance to moisture penetration, oil, and chemical corrosion. These barrier properties make it suitable for food-contact packaging, industrial liners, and anti-seepage membranes used in hydraulic engineering projects.
3. Technical Specifications
| Property | Unit | Specification | Typical Value | Test Method |
|---|---|---|---|---|
| Density | g/cm³ | 0.948 ± 0.002 | 0.948 | GB/T 1033.2 |
| Melt Flow Rate (190°C / 21.6 kg) | g/10 min | 10.0 ± 3.0 | 9.9 | GB/T 3682.1 |
| Tensile Stress at Yield | MPa | ≥ 20.0 | 22.8 | GB/T 1040.2 |
| Nominal Strain at Break | % | ≥ 400 | 662 | GB/T 1040.2 |
| Black Grain & Color Grain | g/kg | ≤ 6 | 0 | SH/T 1541.1 |
| Snakeskin Grain & Tail Grain | g/kg | ≤ 15 | 0 | SH/T 1541.1 |
| Fisheye (0.8 mm) | per 1520 cm² | ≤ 8 | 1 | GB/T 11115 |
| Fisheye (0.4 mm) | per 1520 cm² | ≤ 20 | 4 | GB/T 11115 |
Data source: Daqing Petrochemical Product Quality Certificate, Standard Q/SY 03351-2020. Values are representative of typical production lots.
4. Recommended Applications
4.1 T-Shirt Bags and Shopping Bags
DGDB-6097 is the preferred resin for high-speed production of T-shirt bags and vest carrier bags. The combination of high melt strength and thin-gauge capability enables converters to produce lightweight yet durable bags at competitive cycle times.
4.2 Garbage Bags and Waste Sacks
The grade’s high tensile strength and puncture resistance make it ideal for garbage bags that must contain irregular, sharp-edged waste without rupturing. Its moisture resistance prevents leakage in wet-waste applications.
4.3 Food Packaging Bags
With its clean gel profile and chemical inertness, DGDB-6097 is suitable for food-contact bags used in bakery, produce, and dry-goods packaging. The resin complies with food-contact material requirements under applicable Chinese national standards.
4.4 Industrial Liners and Heavy-Duty Packaging
Industrial liners for chemical drums, construction materials, and bulk packaging benefit from the grade’s toughness and chemical resistance. Multi-layer films incorporating DGDB-6097 as a stiffness layer deliver superior load retention.
4.5 Anti-Seepage Membrane
The resin is increasingly specified for anti-seepage films used in hydraulic engineering, landfill lining, and water conservation projects where long-term barrier integrity is essential.
4.6 Multilayer Coextruded Film
DGDB-6097 serves as a stiffness and strength component in multilayer film structures. When coextruded with LLDPE or mPE sealant layers, the resulting film achieves an optimal balance of mechanical strength, sealability, and optics.
5. Processing Guidelines
DGDB-6097 is designed for tubular blown film extrusion. The recommended processing parameters are as follows:
| Parameter | Recommended Range |
|---|---|
| Barrel Temperature Profile | 180–230 °C |
| Die Temperature | 200–220 °C |
| Blow-Up Ratio (BUR) | 3:1 to 5:1 |
| Frost Line Height | 6–10 × die diameter |
| Typical Film Thickness Range | 8–50 μm |
Pre-drying is generally not required if the resin is stored under dry conditions. For optimal gel performance, maintain a clean extrusion system and use fine-mesh screen packs of 80–120 mesh.
6. Packaging and Logistics
| Item | Detail |
|---|---|
| Packaging | 25 kg/bag |
| Container Loading | 18–20 MT per 20-foot container (without pallets) |
| HS Code | 3901.10.0090 |
| Origin | Daqing, Heilongjiang Province, China |
| Manufacturer | Daqing Petrochemical, CNPC |
| Brand | Kunlun (昆仑) |
| Minimum Order Quantity | 1 × 20′ FCL (approx. 17MT) |
| Lead Time | 7–15 days from order confirmation |
7. Why Source DGDB-6097 Through a Reliable China HDPE Supplier
Daqing Petrochemical is one of China’s oldest and most established polyethylene production bases under CNPC. Its DGDB-6097 grade benefits from decades of process optimization and consistent feedstock quality. The resin is produced to the Q/SY 03351-2020 standard with rigorous lot-to-lot quality control.
Direct partnership with a knowledgeable China HDPE supplier ensures access to fresh production lots, competitive pricing, and flexible logistics solutions. Whether you require full container loads or consolidated shipments combining multiple PE grades, a committed supplier coordinates manufacturer allocation, warehousing, and export documentation on your behalf.
For converters seeking a proven HDPE film grade that balances performance, processability, and cost, DGDB-6097 remains one of the most reliable choices in the global polyethylene raw material market.
8. Frequently Asked Questions
Q: What is the standard MFR of DGDB-6097 at 2.16 kg load?
A: The nominal MFR is specified at 190 °C / 21.6 kg (high load) with a range of 7–13 g/10 min. At the standard 2.16 kg load, the flow rate is below 0.1 g/10 min due to the resin’s high molecular weight, which is typical for HDPE blown film grades.
Q: Can DGDB-6097 be used on cast film lines?
A: DGDB-6097 is optimized for tubular blown film extrusion. For cast film applications, we recommend alternative LLDPE or mPE grades with higher melt flow and narrower molecular weight distribution.
Q: Is DGDB-6097 compliant with food-contact regulations?
A: The base resin meets the requirements of GB 9685 for food-contact materials. End-users should verify compliance with their local food-contact regulations for the specific finished article.
Q: What is the shelf life of this product?
A: When stored in original unopened packaging under dry, cool conditions away from direct sunlight, the recommended shelf life is 24 months from the production date.
Q: Can I request a sample before placing a full container order?
A: Yes. We provide 3–5 kg samples for trial evaluation. Sample shipments are arranged via international courier with delivery typically within 5–7 business days.
