HDPE BL7 (HM6255) Blow Molding Grade

HDPE BL7 is a high-density polyethylene grade designed mainly for blow molding large rigid containers. Also known as HM6255, the HDPE BL7 grade is a high-molecular-weight material with the melt behavior and mechanical performance required for large blow-molded containers.

The HDPE BL7 resin is mainly associated with industrial packaging, especially large containers and L-ring drums of around 220 liters. Its low melt flow rate, stiffness, impact performance, and stress-crack resistance help the material maintain its shape during processing and handling.

As an HDPE BL7 blow molding grade, it is more suitable for large industrial packaging than for every type of small plastic bottle or detergent bottle. Manufacturers should compare their container size, machine requirements and end-use conditions with the current HDPE BL7 datasheet before production.

These characteristics make HDPE BL7 applications particularly relevant to industrial container manufacturers, plastic packaging producers, and other B2B processors looking for an HDPE blow molding grade for large rigid packaging.

The following HDPE BL7 technical specifications are typical reference values reported for BL7/HM6255. They are useful for comparing the grade with other blow molding materials, but the current TDS and shipment COA should always be checked before purchase.

Producer information should be confirmed from the current bag, TDS and COA before ordering.

HS heading 3901.20 covers polyethylene with a specific gravity of 0.94 or more, but importers should still confirm the final customs classification in their destination country.

The main HDPE BL7 properties are closely linked to large-container blow molding.

• Low melt flow rate: The low melt flow under the 5 kg test load indicates the high-molecular-weight character of the material. In practical terms, this helps the molten parison keep its shape during blow molding.
• Impact performance: The documented notched impact value is important for industrial containers that may experience handling, transport or stacking loads.
• Stress-cracking resistance: BL7 is described as having good environmental stress-crack resistance, or ESCR. This is valuable for containers that remain under mechanical stress during storage or use.
• Swell behavior: The reported swell ratio is relevant when adjusting mold and die dimensions because the extruded material may expand after leaving the die.

HDPE as a polymer family also offers useful resistance to many substances, but chemical compatibility should never be assumed from the resin name alone. Manufacturers considering chemical containers should test the finished package against the actual product being filled.

The best-supported HDPE BL7 applications are large blow-molded containers. Published grade tables specifically identify 220-liter L-ring drums as a main application. Typical HDPE BL7 uses may therefore include:

• Large industrial drums
• L-ring drums around 220 liters
• Large rigid packaging containers
• Industrial packaging made by extrusion blow molding

These applications make the HDPE BL7 material particularly relevant to manufacturers that need a high-molecular-weight HDPE resin for larger hollow products.

BL7 should not automatically be presented as the preferred resin for small plastic bottles, detergent bottles or household packaging. Those products may use other blow molding grades with different flow and processing characteristics.

For industrial or chemical packaging applications, buyers should also confirm chemical compatibility, wall thickness, drop performance, closure design and any regulatory requirements for the finished container.

Blow molding is the primary documented processing method for BL7. During production, melt flow rate, parison stability, die design, cooling time and mold dimensions can all affect the finished container.

A technical document for BL7/HM6255 lists a recommended melt temperature range of approximately 180–220°C. Actual machine settings should still be established through the producer’s current processing guidance and plant trials rather than copied directly from a generic setting.

Cooling is particularly important for large containers because uneven cooling can influence wall thickness, shrinkage and dimensional stability. Processors should also consider the resin’s swell behavior when setting die dimensions.

For the right production line, the main advantages of this HDPE BL7 blow molding grade are its suitability for large-container processing, high molecular weight, good impact performance and documented stress-cracking resistance.

Its combination of melt behavior and mechanical properties makes it useful where the container must remain rigid while also tolerating handling and stacking.

The grade is not a universal solution for every blow molding product. Selecting it based on the actual container size and performance requirement is more important than choosing it simply because it is an HDPE grade.

Producer documentation lists HDPE BL7 resin in 25 kg plastic bags. Exact pallet configuration and bags per pallet should be confirmed for the available shipment rather than assumed.

Keep the material in its original closed packaging in a clean, dry warehouse, protected from direct sunlight, excessive heat, dust, moisture, and contamination.

For commercial orders, Shobeir Shimi commonly lists a standard MOQ of one full truckload, around 22 metric tons, for polymer products, while smaller orders may be possible case by case.

Typical delivery on its current polymer pages is about 7–10 working days, depending on quantity, availability, and destination. Ex-factory and border delivery options are also available. These terms should be confirmed specifically for BL7 at quotation time.

The HDPE BL7 price is not fixed. Resin availability, order quantity, destination, freight, delivery terms, payment conditions, and market movements can all change the final quotation.

If you are looking for HDPE BL7 for sale, include your required quantity, destination, application and preferred delivery term in the inquiry. This allows the supplier to check current stock and calculate a more accurate commercial offer. Request the latest HDPE BL7 Price and Availability

Shobeir Shimi is an international polymer and petrochemical trading and supply company, not the manufacturer of BL7. The company sources Iranian polymer products and supports B2B buyers with product selection, documentation and logistics coordination.

For companies looking for an HDPE BL7 supplier, HDPE BL7 exporter or HDPE BL7 supplier in Iran, Shobeir Shimi can check current producer availability, technical documents and export terms. To buy HDPE BL7, send the required volume, destination and end application.