Views: 0 Author: Site Editor Publish Time: 2026-08-06 Origin: Site
Polyurethane processing equipment is becoming increasingly automated, precise and sensitive to changes in material conditions.
Whether the production line uses a single-component polyurethane material or a two-component reactive system, stable temperature is essential for maintaining predictable viscosity, pumping performance and material flow.
However, polyurethane may lose heat as it moves between storage tanks, metering pumps, mixing units and application equipment. Even when the main machine maintains the correct temperature, an unheated connecting hose can become a cold section in the process.
This is why the temperature-stable PU transfer hose is becoming an important component in polyurethane laminating, metering, mixing and dispensing equipment.
Polyurethane materials can become significantly more viscous when their temperature decreases.
Higher viscosity may create several production problems:
Increased pump pressure
Reduced material flow
Slower dispensing response
Unstable metering
Inconsistent component ratios
Material accumulation inside the hose
Partial blockage
Longer equipment startup time
More frequent cleaning
Unexpected production interruptions
A heated polyurethane hose helps compensate for heat loss and maintains more stable material conditions between different machine sections.
The product is designed for a broad range of polyurethane equipment, including:
Laminating machines
Single-component polyurethane systems
Two-component polyurethane equipment
PU adhesive-transfer systems
Mixing and metering equipment
Connecting devices
Composite-material production lines
Customized PU processing machinery
In a single-component system, the primary objective is to maintain a stable material temperature and predictable flow.
In a two-component system, temperature stability becomes even more important because the viscosity of both components can affect the final mixing ratio.
If component A and component B experience different temperature losses, their flow behaviour may change independently. This can reduce metering accuracy and affect the final reaction or bonding result.
A PU transfer hose should not be treated as a simple flexible connection.
It directly influences:
Material temperature
Flow resistance
Pump load
Metering response
Mixing consistency
Dispensing stability
Equipment startup
Production repeatability
For precision polyurethane systems, the hose should be selected together with the pump, sensor, mixing unit and controller.
The polyurethane hose uses uniformly arranged heating elements around the material path.
This heating structure is intended to reduce temperature differences along the hose’s inner wall.
A more consistent thermal profile can help:
Stabilize PU viscosity
Reduce localized material thickening
Improve pump response
Support accurate metering
Reduce pressure fluctuation
Lower blockage risk
Improve continuous production
Shorten warm-up time
The objective is not to overheat the polyurethane material. The hose should maintain the correct processing temperature specified for the material.
The heating layer is combined with insulation material designed to reduce heat loss.
This is particularly important when:
The hose is relatively long
Ambient temperature is low
Flow rate is slow
Production stops temporarily
The material has high viscosity
The hose connects equipment located far apart
Effective insulation reduces the amount of heating power required to maintain the selected temperature and helps limit external surface heat.
The catalog product supports operating temperatures up to:
180°C
The actual working temperature should be determined according to:
Polyurethane formulation
Material viscosity
Supplier processing recommendation
Hose length
Flow rate
Ambient temperature
Working pressure
Inner-tube structure
Heating power
Applications above 180°C require a separate technical evaluation.
Temperature-controlled PU hoses can be used in:
Polyurethane laminating equipment
Flexible packaging machinery
Composite-material processing
One-component PU adhesive systems
Two-component polyurethane machines
PU resin-transfer equipment
Metering and mixing systems
Industrial bonding equipment
Coating machinery
Automated dispensing lines
Polyurethane injection systems
Replacement hoses for imported equipment
The catalog notes that the product has accumulated long-term application experience and a stable customer base through consistent quality and service.
Polyurethane machines may use different fittings, sensors, voltages and electrical connectors.
Available customization may include:
Hose length
Inner diameter
Material-contact inner tube
Heating power
Voltage
Temperature sensor
Machine-side fitting
Mixing-head fitting
Electrical connector
Pin arrangement
Cable length
Outer protective structure
A replacement hose should be matched using the complete technical configuration rather than diameter alone.
Inner Diameter | Outer Diameter | Working Pressure | Burst Pressure | Minimum Bending Radius |
|---|---|---|---|---|
1/4" | 9 mm | 173 bar / 2,501 psi | 690 bar / 10,005 psi | 30 mm |
5/16" | 11 mm | 158 bar / 2,284 psi | 630 bar / 3,915 psi* | 40 mm |
3/8" | 12.4 mm | 135 bar / 1,958 psi | 540 bar / 7,830 psi | 60 mm |
1/2" | 15.9 mm | 118 bar / 1,704 psi | 470 bar / 6,815 psi | 150 mm |
5/8" | 19 mm | 88 bar / 1,269 psi | 350 bar / 5,075 psi | 180 mm |
3/4" | 22.6 mm | 85 bar / 1,234 psi | 340 bar / 4,930 psi | 260 mm |
1" | 29.5 mm | 75 bar / 1,088 psi | 300 bar / 4,350 psi | 300 mm |
*The two burst-pressure values shown for the 5/16-inch specification are not equivalent and should be verified before publication.
These values are catalog reference data. Final allowable pressure depends on temperature, polyurethane properties, fittings and the complete hose assembly.
A correctly configured PU hose can help manufacturers:
Maintain more stable polyurethane viscosity
Reduce pump-load variation
Improve component-metering accuracy
Support consistent mixing ratios
Reduce cold spots
Lower material-blockage risk
Improve dispensing repeatability
Shorten equipment startup
Reduce cleaning frequency
Minimize unplanned downtime
For equipment manufacturers, a customized heated hose can also reduce after-sales problems caused by incorrect fittings, sensors or electrical connections.
For accurate technical evaluation, please provide:
Polyurethane material name
Single- or two-component system
Component A or component B
Required operating temperature
Normal working pressure
Maximum system pressure
Material viscosity
Required flow rate
Hose length
Inner diameter
Voltage
Heating power
Temperature sensor
Machine-side fitting
Mixing- or dispensing-side fitting
Electrical connector
Pin arrangement
Equipment brand and model
Original hose photographs or drawing
Soren Miles
Marketing Manager | JC
Mobile: +86 13087118553
Phone: +1 (757) 733-8947
Email: soren.miles@shenzhenjingcheng.com
Company (Canada): JINCHEN ELECTRIC TRACING CO., LTD.
Company (Hong Kong, China): HK JINGCHENG HIGH TECH CO., Ltd
Company (China): SHENZHEN JINGCHENG HIGH TECH CO., Ltd
Jingcheng Fluoroplastic (Guangdong) Co., Ltd.
Website: https://www.electricallyheatedhose.com
Factory Address:
No. 7 Qiguan East Road, Torch Development Zone,
Zhongshan City, China — Jingcheng Industrial Park
