Inner Mongolia Baofeng LLDPE DFDA9047
- Product Name: Inner Mongolia Baofeng LLDPE DFDA9047
- Factroy Site: Yudu County, Ganzhou, Jiangxi, China
- Price Inquiry: admin@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
- CONTACT NOW
- Inner Mongolia Baofeng LLDPE DFDA9047 is typically used in formulations when target melt flow index, density, and film tensile and optical properties and processing temperature, die pressure, and line speed must be controlled within specific ranges.
| HS Code | 128481 |
| Polymer Type | Linear Low Density Polyethylene (LLDPE) |
| Comonomer | Butene-1 |
| Catalyst Type | Ziegler-Natta |
| Form | Pellets |
| Color | White |
| Density | 0.920 g/cm3 |
| Melt Flow Rate 190c 2 16kg | 1.0 g/10min |
| Tensile Strength At Yield | 9.0 MPa |
| Tensile Strength At Break | 20.0 MPa |
| Elongation At Break | 800% |
| Dart Impact Strength | 100 g |
| Tear Strength Md | 120 g |
| Tear Strength Td | 300 g |
| Haze | 12% |
| Gloss 45 | 60% |
| Melting Point | 125 °C |
| Vicat Softening Point | 100 °C |
| Brittleness Temperature | ≤ -70 °C |
| Environmental Stress Cracking Resistance | >1000 h |
As an accredited Inner Mongolia Baofeng LLDPE DFDA9047 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Inner Mongolia Baofeng LLDPE DFDA9047 is supplied in 25 kg PP woven bags or 1,000 kg jumbo bags. |
| Container Loading (20′ FCL) | 20′ FCL: approximately 25 MT Inner Mongolia Baofeng LLDPE DFDA9047, 25 kg bags, unpalletized, subject to carrier weight limits. |
| Shipping | Inner Mongolia Baofeng LLDPE DFDA9047 is shipped as non-hazardous linear low-density polyethylene resin pellets, usually in 25 kg bags, jumbo bags, or bulk liners. Use clean, dry containers and protect from moisture, heat, sunlight, and contamination. Not classified as dangerous goods; standard industrial handling and storage practices apply. |
| Storage | Store Inner Mongolia Baofeng LLDPE DFDA9047 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, sparks, and flames. Keep original bags sealed on pallets; protect from moisture, dust, contamination, and strong oxidizers. Do not exceed safe stacking heights. Follow first-in, first-out. Avoid prolonged UV exposure and excessive temperatures. Maintain clean, dry floors and good housekeeping. |
| Shelf Life | The product has a shelf life of 24 months from date of manufacture when stored in cool, dry, well-ventilated area. |
In cast stretch-film conversion, Inner Mongolia Baofeng LLDPE DFDA9047 is metered into the core layer of an A-B-A coextrusion line at a ratio of 70–80 wt% relative to total core-layer feed, with the remaining 20–30 wt% typically a metallocene-catalysed plastomer or a highly branched LDPE selected to modify puncture retention. The machine-direction cling layer, where used, contains 5–12 wt% of a polyisobutylene or amorphous polyalphaolefin tackifier masterbatch; the reverse layer is formulated with 2–4 wt% of a slip/anti-block masterbatch based on erucamide and synthetic silica at 5,000–12,000 ppm active loading. Compliance for non-food industrial pallet wrap follows EU Regulation (EC) No 1907/2006 (REACH) and EU Directive 94/62/EC for heavy-metal concentration limits; where the film is placed in incidental food-contact logistics, EU Regulation (EU) No 10/2011 Annex I and FDA 21 CFR 177.1520(c) 3.1a apply. Downstream conversion uses a cast film line with a 90 mm single-screw extruder at an L/D of 30:1, barrier screw with Maddock mixing section, melt temperature 246–258 °C, flat die width 2,000–2,800 mm, die lip gap 0.8–1.0 mm, and a 18–22 °C chill roll. The primary failure mode observed on production-scale lines is edge trim fibrillation when trim is re-fed above 15 wt%, because the lower molecular weight tail increases melt elasticity; this is controlled by maintaining re-feed below 12 wt% and replacing screen packs before pressure differential exceeds 120 bar. Finished product is machine pallet wrap in 17–23 µm caliper and 450–500 mm reel widths, with machine-direction elongation at break above 350% when tested according to ISO 527-3.
What Blow-Up Ratio Prevents Bubble Instability in Heavy-Duty Sack Film?
On heavy-duty sack lines, DFDA9047 is dry-blended with LDPE at 60–70 wt% DFDA9047 and 30–40 wt% LDPE with a melt flow rate of 0.25–0.35 g/10 min measured under ISO 1133-1:2022. The LDPE fraction reduces melt extensional viscosity and raises melt strength, allowing a blow-up ratio of 2.7:1–3.0:1 without bubble instability; at DFDA9047 levels above 80 wt%, bubble flutter appears at frost line heights beyond 1.2 m on a 350 mm die. The process is blown film coextrusion using a 75–90 mm grooved-feed extruder and a die gap of 1.8–2.2 mm, melt temperature 190–210 °C, frost line 800–1,100 mm, and internal bubble cooling with exhaust air at 50–70 °C. Compliance for heavy-duty shipping sacks used in non-dangerous-goods export is anchored to ISO 7965-1:2023 drop testing and ASTM D1709-16a dart impact; when the sack is used for UN-certified dangerous goods, the side-seal and gusset geometry must also pass the 1.2 m drop height sequence under UN Model Regulations Chapter 6.1.5. The terminal product is a gusseted tubular film of 120–180 µm thickness converted into heavy-duty sacks of 25–50 kg capacity, with edge-fold side seams and a bottom block seal.
If High Puncture Resistance Is Required in Silage Cover Film Without EVA Modification
DFDA9047 is used in three-layer agricultural silage cover film at 65–75 wt% of the total formulation; the outer layer contains 2–4 wt% UV stabilizer masterbatch based on hindered amine light stabilizer and UV absorber, and the inner layer contains 5–10 wt% white masterbatch to reduce solar heat gain. The use of DFDA9047 without EVA is specified where silage clamp covers are exposed to rainfall and require puncture resistance, since EVA introduces polar vinyl acetate groups that increase water vapour sensitivity. Downstream processing uses a three-layer blown film line with die diameter 250–300 mm, die gap 1.8 mm, blow-up ratio 2.2:1–2.6:1, melt temperature 185–205 °C, and haul-off speeds adjusted to maintain a frost line 600–900 mm above the air ring. Agricultural film compliance follows EN 13206:2017 for covering films used in agriculture and horticulture and, where relevant, Commission Regulation (EC) No 2023/2006 on good manufacturing practice for food-contact materials. Terminal products are silage clamp covers of 150–200 µm thickness and greenhouse side-sheet films of 180–220 µm thickness, both supplied in lay-flat widths from 8 m to 16 m.
Extrusion lamination sealant webs based on DFDA9047 are run as 100% resin or as 85/15 wt% DFDA9047/LDPE blends when the converting line requires neck-in reduction below 50 mm at an air gap of 200 mm. Melt temperature at the die exit is held at 288–310 °C; below 285 °C, oxidation is not the limiting factor but draw resonance on thin coatings below 18 µm becomes visible on the laminator. The process is tandem extrusion lamination/coating onto aluminium foil, corona-treated OPP, or clay-coated paper, using a 90 mm extruder with L/D 28:1, die width 1,400–1,800 mm, air gap 150–220 mm, and line speed 120–220 m/min. Adhesion to foil is developed through melt oxidation and a primer; without primer, peel adhesion measured by ASTM F904-16 remains below 2.0 N/15 mm, whereas with a conventional polyethylene-imine primer it exceeds 4.0 N/15 mm. Compliance for flexible food packaging is defined by FDA 21 CFR 177.1520(c) 3.1a for polyethylene and by EU Regulation (EU) No 10/2011, including overall migration limits of 10 mg/dm² under simulant A, B, or D2 as applicable. Terminal products include sealant webs for dry beverage mix sachets and pharmaceutical powder stick packs in the 15–30 µm coating weight range.
Low-Temperature Seal Integrity in Quick-Frozen Vegetable Film Structures
For quick-frozen vegetable packaging, DFDA9047 is placed in the sealant layer of a three-layer coextruded blown film at 55–65 wt% of total formula, with HDPE or MDPE in the core at 15–25 wt% and LDPE in the outer layer at 15–25 wt%. The sealant layer maintains hot-tack strength above 2.0 N/25 mm at 120–130 °C seal bar temperature when measured by ASTM F1921-12 Method B. The process uses a three-layer blown film die of 200–250 mm diameter, die gap 1.6–2.0 mm, blow-up ratio 2.3:1–2.7:1, melt temperature 175–195 °C, and a dual-lip air ring with chilled air at 10–15 °C. Compliance references EU Regulation (EU) No 10/2011 and FDA 21 CFR 177.1520; puncture resistance at freezing temperatures is measured by ISO 7765-1:2024 at -20 °C to avoid film splitting on sharp-frozen broccoli and green bean packs. Terminal products are printed pillow pouches and form-fill-seal bags of 50–70 µm thickness for quick-frozen vegetables, with seal-through-contamination performance derived from the molecular weight distribution of the LLDPE compared with conventional autoclave LDPE.
Temporary Surface Protection Film for Coil-Coated Aluminium and Architectural Profiles
DFDA9047 is coextruded as the backing layer in temporary surface protection film at 60–75 wt% of the total structure; the pressure-sensitive adhesive layer is a separate blend of LDPE, mLLDPE, and a low-tack SIS or EVA component at 25–40 wt%. The resin’s puncture resistance is exploited where protected aluminium cladding panels pass through roll-forming and brake-press operations before the film is peeled at destination. Process conditions involve a cast coextrusion line with die width 1,800–2,400 mm, 90 mm and 60 mm extruders for the backing and adhesive layers, melt temperatures 220–240 °C for the backing layer and 200–220 °C for the adhesive layer, and an embossed chill roll at 16–20 °C. Compliance for architectural applications includes EU Regulation (EC) No 1907/2006 (REACH) and EU Directive 2011/65/EU (RoHS), with lead, mercury, hexavalent chromium, PBB, and PBDE restricted to 0.1 wt% per homogeneous material and cadmium restricted to 0.01 wt%. Peel adhesion is controlled to 0.4–2.0 N/25 mm when tested by ASTM D3330/D3330M-04 Method A at 180° angle. Terminal finished products are low-tack protective films of 50–80 µm thickness in widths up to 2,400 mm for coil-coated aluminium, stainless steel sheet, and uPVC window profile protection.
Competitive Inner Mongolia Baofeng LLDPE DFDA9047 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: admin@ascent-chem.com
Get Free Quote of Ascent Petrochem Holdings Co., Limited
Flexible payment, competitive price, premium service - Inquire now!
- Inner Mongolia Baofeng LLDPE DFDA9047 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: admin@ascent-chem.com.
Inner Mongolia Baofeng LLDPE DFDA9047 is distributed as a linear low-density polyethylene film resin; the grade code may be written as DFDA9047 or DFDA-9047 depending on the commercial document. Production paperwork should be checked against GB/T 1845.1-2016 for designation and marking, while melt mass-flow rate and density are verified under ISO 1133-1:2022 and ISO 1183-1:2022. Because the antioxidant and acid-scavenger package can vary by production campaign, the certificate of analysis is the controlling document for lot-specific properties. The resin is supplied in pelletized form for blown film extrusion; published data for the exact additive package of DFDA9047 is limited and should be requested from the supplier when food contact or low-odor packaging is being qualified.
Why does molecular architecture rather than density alone determine DFDA9047 film performance?
In LLDPE blown film conversion, short-chain branch length, branch distribution, and molecular weight distribution govern bubble stability, tensile balance, and impact resistance more strongly than density alone. For butene-based film-grade LLDPE in the same viscosity envelope, density is commonly controlled between 0.916 and 0.922 g/cm³, and melt mass-flow rate at 190 °C/2.16 kg is frequently specified between 0.7 and 1.0 g/10 min. DFDA9047 should be regarded as a butene-comonomer film resin unless the supplier documentation explicitly states otherwise; published comparative data for the grade\u2019s molecular architecture is limited, and conclusions drawn from density alone are unreliable. The ratio of tie-molecule formation to lamellar thickness changes with comonomer length, so a 1-hexene or 1-octene LLDPE at equivalent density can produce different dart impact and tear resistance.
Compared with high-pressure low-density polyethylene produced in autoclave or tubular reactors, DFDA9047 is expected to have lower long-chain branching and a higher melting peak. The reduction in long-chain branching reduces strain-hardening and can make bubble expansion less stable at high blow-up ratios. A high-pressure LDPE with melt mass-flow rate near 2.0 g/10 min may be added at 10 % to 20 % by weight to improve bubble stability, but the addition changes flexural modulus and tear balance. The optimum LDPE addition for DFDA9047 should be determined by a blown film trial on the target line because published data for this specific configuration is limited.
During monolayer extrusion on a 90 mm single-screw extruder with a graduated compression screw and Maddock mixing section, the melt temperature for DFDA9047 should be maintained between 180 °C and 220 °C; operation above the upper limit accelerates oxidation and deposits degraded polymer on the die lip. A 250 mm spiral mandrel die with a dual-lip air ring is typically operated at blow-up ratios from 2.0:1 to 2.8:1. Bubble instability increases when the frost line is not controlled within approximately one die diameter; this is an equipment-specific limit, not a resin specification. Pre-drying is not normally required for pellets stored below 60 % relative humidity, but surface condensation on cold pellets entering a warm feed throat produces severe output surging.
Film gauge variability is monitored by a non-contacting capacitive thickness gauge. For a 25 µm monolayer film, gauge deviation should be held within ±2 µm to avoid weak points detected by Elmendorf tear under ISO 6383-2:1983 and dart impact under ISO 7765-1:2004. The thermal oxidative stability of the resin should be checked by melt-flow stability before prolonged shutdowns; a melt mass-flow rate shift greater than 15 % after multiple heat histories indicates degradation and requires purging.
Quality release thresholds and certificate-of-analysis parameters
DFDA9047 is released against the manufacturer\u2019s internal product specification, not against generic industry intervals. Table 1 identifies the analytical methods commonly applied to film-grade LLDPE and the reporting basis used on certificates of analysis. The table is an analytical framework; it does not replace a lot-specific document.
| Parameter | Method | Condition | Typical film-grade control range or reporting basis |
|---|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022, GB/T 3682.1-2018 | 190 °C / 2.16 kg | 0.7–1.0 g/10 min |
| Density | ISO 1183-1:2022, GB/T 1033.2-2010 | 23 °C | 0.916–0.922 g/cm³ |
| Tensile stress at break | ISO 527-3:2018, GB/T 1040.3-2006 | MD/TD, 500 mm/min | Report value for 25 µm film |
| Tear resistance | ISO 6383-2:1983, GB/T 16578.2-2009 | MD/TD | Report value for specified film thickness |
| Dart impact | ISO 7765-1:2004, GB/T 9639.1-2008 | Method A | Report value for specified film thickness |
| Haze | ISO 14782:2021, GB/T 2410-2008 | 25 µm film | Report value |
| Ash | ISO 3451-1:2019, GB/T 9345.1-2008 | 850 °C | Typically < 0.05 % |
Food contact and regulatory status are product-stewardship issues rather than intrinsic resin properties. DFDA9047 may be used in packaging only after the final converter obtains written compliance from the resin supplier or independent laboratory under EU Regulation (EU) No 10/2011, U.S. FDA 21 CFR 177.1520(c), and GB 9685-2016 where applicable. Specific migration limits for primary aromatic amines or phthalates are not assumed to be zero; they must be tested on the finished film because printing inks, lamination adhesives, and masterbatch carriers change the overall compliance profile.
Gel counting on a production line should be performed with a screen pack of 100/60/100 mesh when the melt pressure before the screen reaches the extruder-specific limit. A rising pressure trend at constant screw speed indicates oxidized gel accumulation or contaminant build-up; this should trigger a screen change rather than an increase in barrel temperature. Batch-to-batch variability is monitored by recording head pressure and die pressure with pressure transducers and by measuring melt temperature after the screw tip.
Pellets should be transported with low-velocity dense-phase conveying to minimize fines generation. Fines content above 0.1 % by weight can cause feed bridging and feed throat blockage in single-screw extruders. Storage silos should be purged with dry air at a dew point of −40 °C to prevent moisture adsorption on the pellet surface. The resin should be stored below 40 °C and protected from direct sunlight to minimize organoleptic changes; storage duration should not exceed supplier guidance.
When butene-copolymer grades cannot satisfy optical or seal requirements
Where DFDA9047 is compared with 1-hexene or metallocene LLDPE, the practical differences appear in dart impact, tear balance, sealing window, and haze after extrusion. Hexene-copolymer LLDPE at equivalent density often forms longer tie molecules and can show improved dart impact under ISO 7765-1:2004 and higher Elmendorf tear under ISO 6383-2:1983, but it may exhibit a broader melting range. Metallocene-catalyzed LLDPE with narrow molecular-weight distribution and low extractables can yield better clarity and a lower hot-tack initiation temperature when tested by ASTM F1921-98(2018); these grades usually require tighter melt-temperature control to avoid melt fracture. DFDA9047 should not be substituted for these grades in high-clarity freezer films or high-stretch hood films without a pilot-scale trial on the target blown film line. Differences from general-purpose DFDA-7042 are likely to involve melt mass-flow rate and molecular weight distribution, but published quantitative comparison for DFDA9047 is limited; heat-seal strength and dart impact should not be inferred from film density alone.
What limits the use of DFDA9047 in high-line-speed form-fill-seal packaging?
On vertical form-fill-seal machines with lap seal or fin seal jaws, the coefficient of friction of DFDA9047 film must be matched to the forming collar and film transport system. If the grade is supplied without slip and antiblock additives, film-to-film coefficient of friction measured under ISO 8295:2004 may exceed 0.5, causing drag and intermittent web feed. Addition of a slip masterbatch should be validated by measuring the decay of coefficient of friction over 24 h and 48 h because erucamide migration kinetics in LLDPE are time-dependent. Hot-tack testing under ASTM F1921-98(2018) is used to determine the minimum sealing dwell time before the packaged product is subjected to loading; this parameter is more critical than heat-seal strength for high-speed packaging lines.
Rework and regrind use on production-scale lines remains a processing boundary. Clean DFDA9047 edge trim can be reintroduced at levels up to 5 % of total feed weight; higher addition rates, particularly with printed or laminated scrap, reduce bubble puncture resistance and increase die-lip deposit formation. The exact allowable regrind fraction is equipment-specific and must be established during a production-scale trial. In coextruded structures, DFDA9047 is normally limited to skin or core layers where its melt viscosity is compatible with the adjacent resin; incompatibility with high-melt-strength HDPE or polyamide tie layers can manifest as layer-thickness non-uniformity and gauge bands. Unless the supplier has issued a written statement for the specific lot, DFDA9047 is not considered a direct food-contact resin under EU Regulation (EU) No 10/2011 or FDA 21 CFR 177.1520(c).
