Film Heat Shrinkage Rate Tester
Category：Other
Introduction
The film heat shrinkage rate tester is a device specifically designed to measure the shrinkage performance of film materials under heating conditions.
Applications
The film heat shrinkage rate tester is mainly used to test the heat shrinkage performance and dimensional stability of various film materials, heat – shrinkable tubes, pharmaceutical PVC sheets, backplanes, etc. in liquid media at multiple temperatures. By precisely measuring the dimensional changes of the film before and after heating and calculating its heat shrinkage rate, the heat shrinkage performance of the material can be evaluated. This performance is directly related to the quality and reliability of products. In the packaging industry, such as in the fields of food, beverages, cosmetics, etc., film materials are widely used for product packaging. The quality of their heat shrinkage performance directly affects the packaging effect and product safety. Through the testing of the film heat shrinkage rate tester, problems that may occur during the heat shrinkage process of materials, such as uneven shrinkage and failure to meet the shrinkage rate standard, can be promptly identified and resolved, thus ensuring the quality of packaging materials.
Standards
ASTM D2732: Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
ISO 14616:1997: Plastics — Heat shrinkable films of polyethylene, ethylene copolymers and their mixtures — Determination of shrinkage stress and contraction stress
DIN 53369: Testing of plastic films; determination of the shrinking stress
GB/T 13519-2016: Polyethylene heat-shrinkable film for packaging applications
Features
Digital P.I.D. temperature control technology ensures the preset temperature to be reached rapidly without any fluctuation
The instrument is heated through fluid medium, which could provide the stable test environment
Automatic timer function to efficiently guarantee the accuracy of test data
The instrument is controlled by micro-computer with LCD, PVC operation panel, and menu interface
Standard clamp wire mesh support could make the test done smoothly
Technical Parameters
| Items | Specifications |
| Specimen Size | ≤140 mm x 140 mm |
| Temperature Range | Room temperature ~ 200°C |
| Accuracy | ±0.2°C |
| Power Supply | AC 100-240V 50/60Hz (can be changed to local requirement) |
| Instrument Dimension | 440 mm (W) x 370 mm (D) x 310 mm (H) |
| Net Weight | 24 kg |
Accessoriess
Standard Configurations: Instrument, Micro Printer, 1 Set of Clamp Wire Meshes
Optional Parts: Clamp Wire Mesh and Clamp Wire Mesh Support
FAQ
1. What is the Film Heat Shrinkage Tester used for?
The Film Heat Shrinkage Tester is designed to measure the shrinkage performance and dimensional stability of film materials, heat-shrinkable tubes, pharmaceutical PVC sheets, and backplanes. By precisely measuring the dimensional changes before and after heating, it calculates the heat shrinkage rate, which reflects the quality and reliability of the material. This testing is especially important in the packaging industry, where improper shrinkage can affect product safety and packaging integrity.
2. Which industries and applications can benefit from this tester?
This tester is widely used in industries such as food, beverage, cosmetics, and pharmaceuticals. It evaluates heat-shrinkable films used in product packaging, ensuring that the materials shrink evenly and meet required shrinkage rate standards. By identifying issues such as uneven shrinkage or failure to meet standards, manufacturers can prevent packaging failures, improve product safety, and maintain high-quality packaging performance.
3. How does the tester operate?
The tester uses a fluid medium, such as silicone oil, to provide a stable heating environment. Film samples are cut to standard sizes (e.g., 100×100 mm) and placed flat in the medium. The microcomputer-controlled system with digital P.I.D temperature control rapidly reaches the preset temperature and maintains it for the test duration. After heating, the sample is cooled, and the dimensions are measured to calculate the shrinkage rate. The instrument can perform tests at multiple temperatures to evaluate material performance under different conditions.
4. What standards does the tester comply with?
The tester operates in accordance with international and national standards, including ASTM D2732 (Unrestrained Linear Thermal Shrinkage of Plastic Film), ISO 14616 (Heat shrinkable films of polyethylene and ethylene copolymers), DIN 53369 (Determination of shrinking stress), and GB/T 13519-2016 (Polyethylene heat-shrinkable film for packaging applications). Compliance ensures accurate, reproducible, and standardized measurement of heat shrinkage performance.
5. How are test results recorded and analyzed?
After the heat shrinkage test, the cooled sample’s dimensions are measured using calipers. The shrinkage rate is calculated using the formula:
Heat Shrinkage Rate = (Initial Size – Shrinkage Size) / Initial Size × 100%.
The instrument can automatically export the data and generate a detailed test report, which helps manufacturers evaluate the material’s shrinkage performance, ensure packaging quality, and optimize material selection.
