HTHP Glycerin bath dyeing machine
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HTHP Glycerin Bath Dyeing Machine

HTHP dyeing machine
The HTHP Glycerin Bath Dyeing Machine (High Temperature High Pressure) is a laboratory or small-scale dyeing machine designed to dye textile samples, especially synthetic fibers like polyester, under high temperature and pressure using glycerin as a heating medium instead of water.
Key Features:
- High Temperature Capability – Operates up to 140°C or more, ideal for disperse dyeing of polyester which requires elevated temperatures.
- Glycerin as Heat Transfer Medium – Glycerin allows for precise and uniform heating beyond the boiling point of water, without pressure buildup as in steam-based systems.
- Small Sample Dyeing – Used for lab-scale dyeing of fabric or yarn samples (commonly 5–10 g per tube), useful in R&D or color matching.
- Multiple Sample Capacity – Usually has multiple dyeing tubes/chambers for simultaneous dyeing of several samples under identical conditions.
- Accurate Temperature and Time Control – Digital or microprocessor-based controllers regulate temperature, heating rate, and timing precisely.
- Uniform Dyeing – Ensures even dye penetration due to consistent heat distribution and controlled rotation or agitation.
- Energy Efficient Glycerin’s heat retention reduces energy consumption compared to steam systems.
- Compact and Durable Design – Bench-top design, made from stainless steel and heat-resistant components for long life and lab use.
Applications:
– Disperse dyeing of polyester.
– Color matching and development.
– Small-batch dye recipe trials before production.
Benefits of HTHP Glycerin Bath Dyeing Machine:
High-Temperature Dyeing – Enables dyeing of synthetic fibers like polyester at temperatures above 100°C without requiring high-pressure steam systems.
- Uniform Heating with Glycerin – Glycerin provides consistent heat transfer, ensuring even dye uptake and minimizing shade variation.
- Energy Efficient- Glycerin retains heat longer, reducing energy consumption compared to traditional steam-based dyeing.
- Accurate Process Control – Precise temperature and time control enhance reproducibility and dyeing consistency.
- Ideal for Lab and Sample Work – Perfect for R&D, shade matching, and recipe development with small fabric or yarn samples.
- Multi-Sample Dyeing – Allows multiple samples to be dyed simultaneously under identical conditions, saving time and effort.
- Compact and Safe – Bench-top design fits in laboratories and is safer than high-pressure steam systems.
- Low Maintenance – Simplified operation and fewer mechanical parts compared to steam-based systems lower upkeep needs.
- Faster Dyeing Cycles- Glycerin heats and cools quickly, reducing overall dyeing time.
Features of HTHP Glycerin Bath Dyeing Machine:
- High-Temperature Operation – Capable of dyeing up to 140–150°C, suitable for synthetic fibers like polyester.
- Glycerin as Heat Medium – Uses glycerin for uniform, efficient heat transfer without generating high steam pressure.
- Multiple Dyeing Chambers – Usually equipped with 6–24 tubes for simultaneous multi-sample dyeing under identical conditions.
- Digital Temperature Controller- Offers precise control of temperature, time, and heating rate with programmable settings.
- Compact and Lab-Friendly Design – Bench-top model, easy to operate in laboratory environments with limited space.
- Stainless Steel Construction – Corrosion-resistant and durable for long-term, high-temperature operation.
- Safety Features – Includes over-temperature protection and thermal insulation to prevent heat loss and ensure operator safety.
- Agitation or Sample Rotation- Some models offer rotation or agitation for uniform dye penetration.
- Energy Efficient Heating – Glycerin’s heat retention improves energy efficiency over water- or steam-based systems.
- Low Maintenance – Simplified mechanical system reduces the need for frequent servicing.
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High temperature glycerin Bath Dyeing machine.
Brad: DUNLIN
Origin: China
Application scope of high temperature glycerin machine: it is suitable for high temperature sample
dyeing and washing fastness test of needle woven fabric, woven fabric, yarn, cotton, loose fiber
and zipper. It is a high temperature dyeing sample machine specially designed for dyeing industry,
chemical industry, raw material and cloth industry. It can accurately simulate the actual production
conditions and achieve the required process effect.
Parameter specification:
Model: H-24P
Number of test cups: 24*450ml
Maximum dyeing temperature: 235 ℃
Bath ratio: 1:10~1:60
Heating power: 10800w
Heating medium: Glycerin
Motor power: 0.75w
Rotor speed: 42 r/min
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- A variety of unit conversions between Chinese and English. 10. Reliable anti-pinch safety protection design. [Technical parameter]: 1. Test range: (0~1)Mpa (the range above 1Mpa needs to be customized) 2. The minimum graduation value: 0.0001Mpa 3. Pressurization mode: direct pressurization, timing pressurization, and expansion degree pressurization.
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