Ray-Ran Unrestrained Linear Thermal Shrinkage Apparatus (Liquid Immersion Method)
Accurate Thermal Shrinkage Testing for Plastic Films and Sheeting
The Ray-Ran Unrestrained Linear Thermal Shrinkage Apparatus is designed to determine the unrestrained linear thermal shrinkage of plastic films and sheeting using the liquid immersion method. Ideal for quality control, product development and research laboratories, the instrument provides accurate, repeatable results in accordance with ASTM D2732.
During the manufacturing process, plastic films and sheets can retain internal stresses. When exposed to heat, these stresses are released, causing the material to shrink. This apparatus accurately measures the percentage of shrinkage at controlled temperatures, enabling manufacturers to evaluate product performance, processing conditions and material consistency.
Engineered for precision and ease of use, the system combines a digitally controlled heated liquid bath, integrated stirring system and electronic timer to ensure stable, repeatable testing conditions.
How It Works
The temperature bath is heated to the required test temperature before prepared film specimens are immersed in the liquid bath for a specified period. After immersion, the samples are cooled to room temperature and measured in both the longitudinal and transverse directions. The percentage of thermal shrinkage is then calculated and can be plotted against temperature to evaluate material behaviour.
The apparatus is supplied with stainless steel specimen holders designed for 100 mm × 100 mm samples, together with a matching cutting template to ensure consistent specimen preparation.
Features & Benefits
- Designed to ASTM D2732
- Determines unrestrained linear thermal shrinkage of plastic films and sheeting
- Liquid immersion testing method
- Ideal for quality control, product development and research laboratories
- PID digital temperature controller with 0.1°C resolution
- PT100 platinum resistance temperature sensor for accurate temperature measurement
- Temperature stability within ±0.5°C
- Integrated stirrer motor for uniform bath temperature
- Built-in electronic timer (hours, minutes and seconds)
- Stainless steel heated liquid bath
- Six stainless steel specimen holders included
- 100 mm × 100 mm specimen cutting template supplied
- Simple operation with fast, repeatable testing
- CE Declaration of Conformity
- User manual included
- 1-year return-to-base warranty
Specifications
| Specification | Details |
|---|---|
| Model | RR/FSL |
| Test Method | Unrestrained Linear Thermal Shrinkage (Liquid Immersion) |
| Standard | ASTM D2732 |
| Applications | Quality Control, Research & Development |
| Suitable Materials | Plastic Films, Plastic Sheeting, Polymer Films |
| Temperature Control | PID Digital Controller |
| Temperature Resolution | 0.1°C |
| Temperature Sensor | PT100 Platinum Resistance Thermometer |
| Temperature Stability | ±0.5°C |
| Timer | Electronic (Hours : Minutes : Seconds) |
| Specimen Size | 100 × 100 mm |
| Bath Material | Stainless Steel |
| Power Supply | 110–240 VAC, 50/60 Hz |
| Dimensions | 500 × 400 × 500 mm (W × D × H) |
| Weight | 25 kg |
Optional Accessories
- Additional stainless steel specimen holders
Applications
The Ray-Ran Unrestrained Linear Thermal Shrinkage Apparatus is suitable for testing:
- Plastic films
- Polymer films
- Plastic sheeting
- Flexible packaging materials
- Heat-shrink films
- Quality assurance laboratories
- Manufacturing process control
- Research and development facilities
Standards
- ASTM D2732 – Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting