LDPE Injection Molding Grade Granules

LDPE Injection Molding Grade Granules are versatile polyethylene pellets developed for manufacturers looking for a flexible, lightweight, and easy-to-process material for injection molding applications. LDPE, or Low-Density Polyethylene, is widely used in the plastics industry because it offers a useful combination of low density, flexibility, impact resistance, moisture resistance, and good processing behavior. The material is produced through controlled polymerization and then converted into uniform granules suitable for industrial handling, storage, transportation, and feeding into injection molding machines. Different LDPE grades are available with different Melt Flow Rate, density, and mechanical properties, allowing manufacturers to select the most suitable material according to their product design and production requirements.

One of the most important specifications when selecting LDPE for injection molding is the Melt Flow Rate, as it affects how easily the molten polymer fills the mold. Higher-flow grades are generally suitable for thin-wall products, complex shapes, and molds where easy filling is important, while other grades may be selected when different strength or melt characteristics are required. LDPE injection molding material is commonly used for caps, closures, lids, household products, toys, flexible containers, packaging components, and various consumer and industrial parts where flexibility and toughness are required. Its relatively low density also allows manufacturers to produce lightweight products while maintaining suitable performance for the intended application. The material provides good resistance to moisture and many commonly encountered chemicals, which further expands its use in different manufacturing environments. Processing is normally carried out on conventional injection molding equipment, with barrel temperature, injection pressure, injection speed, holding pressure, and cooling time adjusted according to the selected grade and product design. Correct material selection and processing conditions can help achieve stable mold filling, consistent dimensions, good surface appearance, and efficient production cycles. For international B2B purchasing, buyers should consider the exact grade, manufacturer, country of origin, MFI, density, packaging, production lot, available quantity, and required documentation before confirming an order. A Technical Data Sheet and, when required, a Certificate of Analysis can be provided for the selected material. We can supply LDPE Injection Molding Grade Granules according to the buyer’s required application, technical specifications, packaging, quantity, origin, and delivery requirements. For current availability, competitive pricing, and bulk supply options, buyers can send their required specifications and target quantity to receive a commercial quotation.

LDPE Injection molding grade granule supply from Iran

LDPE Injection Molding Grade Granules – Technical Specifications

No.	Technical Property	Typical Specification	Test Method
1	Polymer Type	Low Density Polyethylene (LDPE)	—
2	Physical Form	Granules / Pellets	Visual
3	Density	0.910–0.930 g/cm³	ASTM D792 / D1505
4	Melt Flow Rate (MFR)	5–50 g/10 min	ASTM D1238, 190°C/2.16 kg
5	Tensile Strength at Break	8–13 MPa	ASTM D638
6	Elongation at Break	90–500%	ASTM D638
7	Shore Hardness	40–55 Shore D	ASTM D2240
8	Melting Temperature	Approx. 105–115°C	DSC
9	Vicat Softening Temperature	Approx. 75–90°C	ASTM D1525
10	Recommended Processing Temperature	Approx. 160–240°C	Grade dependent

Note: Technical values may vary depending on the specific LDPE grade.

IF YOU ARE WILLING TO BUY LDPE GRANULE FROM IRANIAN SUPPLIERS, PLEASE SCROLL DOWN AND SUBMIT YOUR REQUEST.

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FAQ LDPE Injection Molding Grade Granules

LDPE Injection Molding Grade is a low-density polyethylene resin specifically formulated for injection molding. It offers good flowability, flexibility, impact resistance and easy processing, making it suitable for producing closures, containers, household products, toys and various molded components.

Typical applications include caps and closures, containers, lids, household items, toys, flexible molded parts, pipe couplings and various industrial components. The exact application depends on the melt flow rate and mechanical properties of the selected grade

Normally, virgin LDPE does not require pre-drying because it absorbs very little moisture. However, recycled or improperly stored material may require appropriate drying before processing to reduce surface defects.

Processing temperatures depend on the specific grade, machine and molded part. A general melt-processing range is approximately 160–240°C, while manufacturer-specific recommendations should always be followed. For example, LyondellBasell recommends a melt-temperature range of about 221–246°C for certain Petrothene LDPE injection molding resins.

The most important factors are Melt Flow Rate (MFR), density, flexibility, impact resistance, tensile properties and the required surface finish. Higher-flow grades are generally more suitable for thin or detailed parts, while lower-flow grades can be preferable when greater melting strength is required. The final selection should be based on the product design and injection molding conditions.

International buyers can find reliable Iranian suppliers of LDPE Granules through IranCorps, a B2B platform that helps buyers connect with qualified Iranian manufacturers and exporters. Buyers can submit their LDPE requirements, including the required grade, quantity, packaging, destination country and delivery terms, and receive quotations from relevant Iranian suppliers. IranCorps also helps buyers save time by connecting them with suppliers relevant to their specific purchasing requirements rather than searching for exporters individually. The platform provides a dedicated LDPE Granule product page where buyers can submit an RFQ and request offers from Iranian suppliers.