Rigid packaging plays a critical role in industrial supply chains, FMCG distribution, pharmaceuticals, chemicals, lubricants, and food storage. Unlike flexible packaging, rigid packaging products retain their shape and structural strength during handling, stacking, and transportation.

At Source, India’s leading industrial raw material ecosystem for polymers, chemicals, additives, and sustainable materials, we help manufacturers select the right polymer grades for rigid packaging applications from shampoo bottles to 200-litre industrial drums.

This guide explains which HDPE, LDPE, PP, and PET grades are used in rigid packaging and how to select the right one for your manufacturing needs.

What is Rigid Packaging?

Rigid packaging refers to plastic products that:

• Maintain structural shape

• Do not bend easily

• Provide stacking strength

• Offer durability during transport

Common Examples:

• Bottles

• Containers

• Drums

• Jerry cans

• Crates

• Storage tanks

Polymers Mainly Used:

• HDPE (High Density Polyethylene)

• LDPE (Low Density Polyethylene)

• PP (Polypropylene)

• PET (Polyethylene Terephthalate)

Each polymer offers a unique balance of strength, chemical resistance, flexibility, and processability.

How to Choose the Right Polymer Grade for Rigid Packaging

Selecting the right plastic grade depends on:

1 Container Size: Small bottles and large drums require different blow moulding grades.

2 End Use Application: Food, pharma, chemicals, or lubricants all have different compliance needs.

3 Manufacturing Process: Most rigid packaging is produced via:

• Extrusion Blow Moulding

• Injection Moulding

• Blow-Fill-Seal (BFS)

4 Regulatory Requirements: Food contact and pharmaceutical packaging must meet safety standards.

5 Mechanical Performance: Impact strength, ESCR (Environmental Stress Crack Resistance), stiffness, and stacking strength are key.

Comparison of Polymers Used in Rigid Packaging

HDPE Grades Used in Rigid Packaging

HDPE is the backbone of rigid packaging. It offers high strength, stiffness, and chemical resistance, making it ideal for industrial containers and jerry cans.

1 Small Containers (< 20 Litres)

Used For:

• Shampoo bottles

• Edible oil jars

• Small jerry cans

Common Grade Group:

HDPE GPBM (General Purpose Blow Moulding Grade)

Why GPBM?

• High strength-to-density ratio

• Good impact resistance

• Excellent chemical resistance

• Good processability

GPBM grades are widely used for FMCG packaging and light industrial containers.

2 Medium Containers (20–200 Litres)

Used For:

• Chemical cans

• Water tanks

• Storage drums

Common Grade Group:

HDPE MBM (Medium Blow Moulding Grade)

Why MBM?

• Improved ESCR

• Better stacking strength

• Higher stiffness

• Suitable for chemical storage

These grades are designed for heavier-duty industrial applications.

3 Large Drums (>200 Litres)

Used In:

• Industrial storage

• Chemical transportation

• Hazardous material packaging

Common Grade Group:
HDPE LBM (Large Blow Moulding Grade)

Why LBM?

• High melt strength

• Superior environmental stress crack resistance

• Excellent structural integrity

• Designed for large-volume extrusion blow moulding

Which Grade is Used for Pharmaceutical Bottles?

Pharmaceutical and nutraceutical packaging requires flexibility, purity, and compatibility with sterile production processes.

Polymer Used: LDPE

Grade Type: LDPE Blow Grade (LD Blow)

Why LDPE for Pharma?

• Flexible and squeezable

• Safe for medicinal packaging

• Suitable for eye-drop and syrup bottles

• Compatible with Blow-Fill-Seal (BFS) technology

• Good moisture barrier

LDPE blow grades are widely used in regulated pharmaceutical environments.

What Grades Are Used for Caps & Closures?

Caps and closures demand dimensional stability and torque strength.

Common Materials:

• PP Random Copolymer

• PP Copolymer (PPCP)

• LD Heavy Grades

Used For:

• Bottle caps

• Tube laminates

• Closures

• Flip tops

Why PP?

• High stiffness

• Good hinge performance

• Excellent mouldability

• Heat resistance

PP moulding grades are ideal for injection moulding applications like caps and closures.

FAQ Rigid Packaging Polymer Grades 

What is the best plastic grade for HDPE jerry cans?
HDPE GPBM or MBM grades are commonly used depending on container size and required ESCR performance.

Which polymer is used for edible oil containers?
HDPE blow moulding grades are widely used for edible oil containers due to strength and chemical resistance.

Which plastic is used for pharmaceutical bottles?
LDPE blow grades are commonly used because of flexibility and compatibility with Blow-Fill-Seal processes.

What is ESCR in HDPE?
Environmental Stress Crack Resistance (ESCR) measures a material’s resistance to cracking under stress and chemical exposure. It is critical for chemical containers.

Can PP be used for blow moulding?
Yes. PP can be blow moulded, but it is more commonly used in injection moulding for caps and closures.

What MFI should I look for in blow moulding grades?
Blow moulding grades typically have low to medium MFI to ensure proper parison strength and uniform wall thickness.

Ready to Source the Right Rigid Packaging Grade?

Whether you manufacture:

• Shampoo bottles

• Edible oil containers

• Chemical drums

• Pharma bottles

• Caps and closures

Source connects manufacturers and traders with verified HDPE, LDPE, PP, and PET rigid packaging grades.

Browse specifications, compare blow moulding grades, and connect directly with procurement specialists who understand rigid packaging requirements.