HM Rolls
High Performance Polyethylene Rolls
Dhanshri Polypack specializes in supplying HMWPE rolls that provide extremely high wear resistance and impact strength. Our HMWPE rolls offer maximum performance for conveyor systems and other material handling applications.
Introduction to HM Rolls
HMWPE rolls are made from high molecular weight polyethylene which is an engineered plastic with an ultra high molecular weight over 1 million g/mol.
Key properties of HMWPE used for the rolls:
- Ultra high abrasion resistance
- High impact strength
- Low coefficient of friction
- Excellent chemical resistance
- High ductility and toughness
These properties make HMWPE an ideal material for conveyor and material handling rolls needing durability.
Applications of HM Rolls
HMWPE rolls are commonly used for:
- Conveyor rollers – Carry belts, gravity roller
- Conveyor side guides – Center products on a belt
- Chute guides – Transition products smoothly
- Slider beds – Low friction material movement
- Wear strips – Protect chute surfaces from abrasion
- Tank and hopper in liners – Protect from corrosion
The abrasion resistance allows use with highly abrasive loads like aggregates, ores etc.
Types of HM Rolls
We supply HMWPE rolls in various types:
- Conveyor rollers – Cylindrical or crowned
- Conveyor side guides – ‘L’ shaped guides
- Wear strip rolls – Adhesive-backed strips
- Chute / Hopper liner rolls – For corrosion protection
- Machined blank rolls – For custom fabrication
Our HMWPE rolls are available in standard sizes and custom dimensions.
Benefits of HM Rolls
HMWPE rolls provide the following benefits:
- Exceptional abrasion and impact resistance
- Maintains low friction even under load
- Does not crack or chip under heavy loads
- Provides quiet operation compared to steel
- Corrosion and chemical resistant
- Easy to fabricate and machine
- Lightweight compared to metallic rolls
- Noise dampening properties
HM Material Properties
- Density – 0.93 to 0.95 g/cm3
- Hardness – 58 to 65 Shore D
- Tensile Strength – 45 to 55 MPa
- Elongation – 250 to 400%
- Coefficient of Friction – 0.1 to 0.3
HM vs UHM Rolls
- HMWPE rolls have molecular weight of 3-6 million g/mol. UHMWPE rolls have higher molecular weight >6 million g/mol.
- UHMWPE offers even better wear resistance and impact strength than HMWPE.
- UHMWPE has higher tensile strength and ductility than HMWPE.
- UHMWPE is more expensive than HMWPE due to its higher performance properties.
- For most general applications, HMWPE provides sufficient durability at a lower cost.
FAQs
What are the typical applications of HM rolls?
Typical applications include conveyor rollers, side guides, wear strips, chute liners, tank liners used across industries like packaging, mining, food processing etc.
What sizes of HM rolls do you offer?
We supply HM rolls from 50mm diameter up to 400mm diameter and lengths up to 5 meters. Custom sizes are also available.
Do you supply fabricated HM parts?
Yes, we offer fabrication services to convert HM rolls into chutes, hoppers, guarding, and other customized components.