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

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Summary

: The coefficient of friction of packaging films plays a critical role in the smooth operation of the unwinding, opening, and bag-cutting processes. This article focuses on rice cake packaging film and uses the MXD-02 friction coefficient meter developed independently by Jinan Languang Electromechanical Technology Co., Ltd. to measure and analyze the friction properties of the material. It explains the working principle, technical parameters, application scope, and testing procedures of the equipment, offering an effective solution for companies to assess the friction characteristics of their packaging films.

Key words

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

1

,Significance

The friction coefficient is a key parameter that determines the smoothness of packaging materials. It includes both the static and dynamic friction coefficients, which are essential for evaluating the performance of packaging films. A proper friction coefficient ensures the efficient and stable operation of the packaging process. If the coefficient is too low or inconsistent, it may lead to issues such as slippage, misalignment, or unstable stacking during the packaging process. On the other hand, if the coefficient is too high, it can cause difficulties in opening the package or filling the contents. Therefore, maintaining an optimal friction coefficient is crucial for improving production efficiency and product quality.

Rice cakes are a traditional delicacy in Southeast Asia, typically made from sticky rice or rice flour. They come in two colors—white and yellow—symbolizing gold and silver, representing prosperity and harmony. In this study, the friction coefficient of the inner surface of the rice cake packaging film was tested by simulating the actual friction conditions during the packaging process.

2

,Current Status

Most rice cakes are packaged using plastic composite films. In China, the commonly referenced standard for measuring the friction coefficient of soft plastic packaging 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 brand of rice cake packaging.

4

,Testing Equipment

The MXD-02 friction coefficient meter, developed by Jinan Languang Electromechanical Technology Co., Ltd., was used to evaluate the friction coefficient of the rice cake packaging film sample.

4.1

,Test Principle

The friction coefficient is defined as the ratio of the friction force between two surfaces to the normal force acting on one of them. The device applies a known weight to a sliding block, and measures the resistance when the surfaces move relative to each other. This allows for the determination of both the static and dynamic friction coefficients.

4.2

,Scope of Application

The equipment is suitable for measuring the static and dynamic friction coefficients of various materials including plastic films, aluminum foils, composite films, metal tapes, rubber, paper, textiles, and more. It also supports smoothness testing for cosmetics and daily chemicals.

4.3

,Device Parameters

- Load range: 0–5 N, accuracy: 0.5 level - Travel options: 70 mm or 150 mm - Standard slider weight: 200 g (customizable) - Test speed: 100 mm/min or 150 mm/min (adjustable) - Capable of measuring both static and dynamic friction in a single test - Demagnetized components to reduce measurement errors - Professional software for data analysis and reporting - Lystem™ system for centralized data management

5

,Experimental Procedure

1. Cut samples of 8 cm × 20 cm and 63 mm × 100 mm, forming three groups. 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 bench without applying any impact, ensuring the pulling direction is parallel to the sliding direction. 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 the process for all three samples.

6

,Test Results

Table 1 shows the test results for the three samples.

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 accurate and reliable, reflecting the true smoothness of the material. In addition to rice cake packaging, the MXD-02 can be applied to a wide range of packaging and products, making it a versatile testing tool. Labthink Languang has been dedicated to providing professional testing services and equipment globally, focusing on solving challenging packaging issues. For more information about the MXD-02 or to contact us, please visit our website or call 0531-85068566. Jinan Languang Electromechanical Technology Co., Ltd. is eager to collaborate with industry partners to advance technological development.