Test method for friction coefficient of plastic composite film film for rice cake packaging - Database & Sql Blog Articles

Test - lowercase jpg

Kaixin micro test

Huaqiang Square Crystal Zhen full range of original stock

Summary

: The coefficient of friction of packaging films plays a critical role in the smooth operation of processes like unwinding, opening, and cutting. This article explores the use of Jinan Languang Electromechanical Technology Co., Ltd.'s independently developed MXD-02 friction coefficient meter to evaluate the friction properties of rice cake packaging film. It outlines the testing principle, equipment parameters, application scope, and a brief procedure for testing, offering an effective method for companies to assess the friction characteristics of their packaging materials.

Key words

: friction coefficient, dynamic friction coefficient, static friction coefficient, smoothness, soft plastic packaging, rice cake, pastry, slippery, poor opening

1

,Significance

The friction coefficient is a key indicator that reflects the smoothness of packaging materials. It includes both the static and dynamic friction coefficients, which are essential for determining whether the packaging process will run smoothly. If the friction coefficient is too low or inconsistent, it can lead to issues such as slipping during roll-to-roll bagging or unstable stacking. On the other hand, if the coefficient is too high, it may cause problems with the bag's opening or improper filling. Therefore, maintaining an appropriate friction coefficient is crucial for improving production efficiency.

Rice cakes are a traditional food in Southeast Asia, typically made from sticky rice or rice flour. They come in two colors—white and yellow—symbolizing gold and silver. These cakes are commonly associated with Lunar New Year celebrations, representing prosperity and good fortune. In this study, we measure the friction coefficient of the outer surface of the inner layer of rice cake packaging film, simulating the actual friction conditions during the packaging process.

2

,Current Status

Most rice cakes are packaged using plastic composite films. Currently, the primary reference method for measuring the friction coefficient of soft plastic packaging in China is GB 10006-1988, "Method for Measuring Friction Coefficient of Plastic Film and Sheet."

3

Sample

A roll of plastic composite film used for a branded rice cake packaging.

4

,Testing Equipment

This study uses the MXD-02 friction coefficient meter, developed by Jinan Languang Electromechanical Technology Co., Ltd., to test the friction coefficient of the rice cake packaging film sample.

4.1

Test Principle

The friction coefficient refers to the ratio of the force of friction between two contacting surfaces and the normal force acting on one of them. The device applies a known weight to the two films through a slider and measures the forces as the surfaces transition from rest to motion, thereby determining the static and dynamic friction coefficients.

4.2

Application Scope

(1) This equipment is designed to measure the static and dynamic friction coefficients of various materials, including plastic films, aluminum foils, metal composites, rubber, paper, textiles, and more. It also supports smoothness testing for cosmetics and daily chemicals.

(2) The device complies with international standards such as ISO 8295, GB 10006, ASTM D1894, and TAPPI T816.

4.3

Equipment Parameters

- Load range: 0–5 N, accuracy: 0.5 level.

- Travel options: 70 mm or 150 mm.

- Standard slider weight: 200 g; custom weights available.

- Test speed: 100 mm/min or 150 mm/min, adjustable as needed.

- Simultaneous measurement of static and dynamic friction coefficients.

- Demagnetized test bench and slider to reduce errors.

- Professional software for data analysis, curve superposition, and reporting.

- Lystemâ„¢ system for centralized management of test reports.

5

,Experimental Procedure

(1) Cut samples of 8 cm × 20 cm and 63 mm × 100 mm from the film roll, forming three groups of samples.

(2) Attach one 8 cm × 20 cm sample to the horizontal test bench, with the heat-seal side up.

(3) Fix one 63 mm × 100 mm sample on the slider, ensuring the non-heat-seal side faces outward.

(4) Place the slider on the test surface without impact, ensuring alignment and avoiding contamination.

(5) Set the test speed and stroke, then start the test.

(6) After 15 seconds, the relative movement begins, and the device records the force changes to calculate the static and dynamic friction coefficients.

(7) Repeat steps (2)–(6) until all three samples are tested.

6

,Test Results

The test results for the three samples are summarized in Table 1.

Table 1: Test Result Data

7

,Conclusion

The friction coefficient is a vital performance indicator for soft plastic packaging. Using the MXD-02 friction coefficient meter, the test results were stable and reliable, accurately reflecting the smoothness of the material. Beyond rice cake packaging, this equipment can be applied to various types of packaging and products, making it a versatile tool for quality control.

Labthink Languang is dedicated to providing professional testing services and equipment globally, helping customers solve complex packaging challenges. For more information about the MXD-02 or to contact us directly, please visit our website or call 0531-85068566. Jinan Languang Electromechanical Technology Co., Ltd. is committed to fostering technical collaboration within the industry.