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Marlex® Polyethylene Resins for Blow Molding

Blow Molded Milk Jugs

With decades of innovation and leadership in blow molding resin technology, CPChem has helped shape the industry’s standards for quality and reliability.

Blow molding is a forming process that inflates molten polyethylene into molds to create durable, lightweight containers, bottles and industrial parts. Polyethylene is widely used in blow molding for its excellent stiffness‑to‑density balance, toughness, chemical resistance and reliable processing performance.  

Quickly identify the CPChem polyethylene resins best suited for your blow molding application—so you can streamline selection and get to production with confidence. 

Explore HDPE and LDPE Grades

 

HDPE Blow Molding Grades  LDPE Blow Molding Grades

Performance Requirements for Blow Molding

woman uses cleaning spray in a plastic bottle to clean countertops

Engineered for Blow Molding

Blow molding applications demand resins that deliver reliable processing, excellent melt strength and consistent part performance across a range of bottle, container and industrial designs. CPChem's Marlex® polyethylene resins are engineered for outstanding manufacturing consistency, helping converters maximize line stability, reduce variability and achieve high production efficiency with confidence.

Key Performance Considerations

  • Melt strength and parison stability
  • Environmental stress-crack resistance (ESCR)
  • Stiffness-to-toughness balance
  • Processing consistency across equipment types
  • End-use requirements (food contact, chemical resistance, durability)
.

HDPE Resin for Blow Molding

ProductApplicationMI
(g/10 min)		HLMI
(g/10 min)		Density ↑
(g/cm3)
Marlex® C513UV PolyethyleneIntermediate Bulk Containers—6.20.945
Marlex® 9503H PolyethyleneHousehold & Industrial Chemicals0.31—0.946
Marlex® 9503HF PolyethyleneHousehold & Industrial Chemicals0.31—0.946
Marlex® HXM 50100 PolyethyleneLarge Parts, Industrial Products—10.00.948
Marlex® HXM 50100-01 PolyethyleneLarge Parts, Industrial Products—12.00.948
Marlex® HHM 4903 PolyethyleneHousehold & Industrial Chemicals0.29—0.949
Marlex® 9505H PolyethyleneHousehold & Industrial Chemicals0.34—0.949
Marlex® HHM 5202BN PolyethyleneHousehold & Industrial Chemicals0.35—0.951
Marlex® 9512H PolyethyleneHousehold & Industrial Chemicals0.35—0.954
Marlex® 9513H PolyethyleneHousehold & Industrial Chemicals0.35—0.954
Marlex® HXB TR-512 PolyethyleneLarge Parts, Industrial Products—5.50.954
Marlex® HHM 5502-01ST PolyethyleneLarge Parts, Industrial Products0.25—0.955
Marlex® HHM 5502BN PolyethylenePersonal Care, Pharmaceutical0.35—0.955
Marlex® HHM 5502BZ PolyethylenePersonal Care, Pharmaceutical0.35—0.955
Marlex® HHM 5502LD PolyethylenePersonal Care, Pharmaceutical0.35—0.955
Marlex® HHM 5502LW PolyethyleneHousehold & Industrial Chemicals0.35—0.955
Marlex® 9514H PolyethyleneHousehold & Industrial Chemicals0.30—0.957
Marlex® 9515H PolyethyleneHousehold & Industrial Chemicals0.34—0.957
Marlex® EHM 6004 PolyethyleneFood Packaging, Retail Packaging0.37—0.963
Marlex® EHM 6007 PolyethyleneLiquid Food0.70—0.964
.

LDPE Resin for Blow Molding

ProductApplicationMI
(g/10 min)		Density ↑
(g/cm3)
Marlex® 5104 PolyethyleneLiquid Food Bottles1.30.924
Marlex® 4538A PolyethyleneLiquid Food Bottles2.00.925

Technical Support for Your Application

CPChem brings long-standing experience supporting blow molding operations across packaging, industrial, and specialty applications. Our teams work closely with manufacturers to evaluate processing challenges, refine resin selection and support application development as production needs evolve. 

This hands-on approach helps customers address practical considerations such as part consistency, processing stability and performance requirements, without disrupting existing manufacturing operations.

Contact Our Customer Service Team
Researcher at CPChem Kingwood