Abstract: Peel strength is a physical quantity reflecting the composite fastness of composite film materials and is an important performance index of composite film materials. In this paper, the process of Labthink XLW (EC) intelligent electronic tensile testing machine peel strength aluminum pharmaceutical packaging composite film, for example, describes the information detecting soft plastic packaging fastness test principle and the monitoring method, device parameters, as The company monitors the heat seal strength of the package and selects the corresponding testing equipment for reference.

Keywords: composite fastness, peel strength, intelligent electronic tensile testing machine, pharmaceuticals, aluminized composite film, flexible plastic packaging, layering

1 , the meaning

The composite membrane material is composed of two or more single-layer membranes through a composite process such as dry lamination and extrusion lamination. The performance of each single-layer membrane is complementary, and the barrier properties, physical and mechanical properties of the composite membrane are formed, etc. Performance has been greatly improved. The composite fastness of each single-layer film has a great influence on the performance of the composite film. If the composite fastness is low, it is prone to delamination, which not only affects the appearance of the drug packaging, but also causes the mutual reinforcing effect between the single-layer films to weaken. As a result, the barrier properties and physical and mechanical properties of the composite film are reduced. In addition, if the peel strength of the package is low and the composite fastness is poor, delamination easily occurs during tearing of the packaging bag, that is, the tearing performance of the packaging bag is poor. , affecting the feeding of medicines. Therefore, it is of great significance to monitor the composite fastness of composite membrane materials.

2 , the status quo

Composite film materials for pharmaceutical packaging cover plastic composite films, aluminized composite films, and aluminum-plastic composite films. The testing of the peel strength of these materials is mainly based on the standard YBB00132002 General Rules for Composite Film Bags for Pharmaceutical Packaging.

3 , test sample

A certain brand of pharmaceutical packaging aluminum composite film.


Figure 1 drug package aluminum composite film, bag

4 , testing equipment

In this paper, the XLW (EC) intelligent electronic tensile testing machine independently developed by Jinan Languang Electromechanical Technology Co., Ltd. was used to test the peel strength of the aluminized composite film samples.


Figure 2 XLW (EC) Intelligent Electronic Tensile Testing Machine

4.1 Test principle

The fixtures of the equipment are divided into upper and lower two, the upper fixture can move at a preset speed, and the lower fixture remains fixed. During the test, the two ends of the specimen are clamped in the upper and lower clamps respectively. With the movement of the upper clamp, the specimen is stretched, peeled, or torn, etc., and the force value and displacement change caused by the specimen change occur. The force sensor and the displacement sensor are respectively placed on the movable chuck. Based on the monitoring results, the tensile breaking force, deformation rate, and peeling strength of the sample are calculated.

4.2 Scope of application

(1) This equipment is mainly used for plastic film, composite materials, soft packaging materials, plastic hoses, adhesives, adhesive tapes, stickers, medical patches, release paper, protective film, combination cover, metal Foil, separator, backing material, non-woven fabric, rubber, paper and other products tensile, peeling, deformation, tearing, heat sealing, bonding, puncture force, opening force, low speed unwinding force, peeling force and other properties tests, such as oral tearing force of the lid, the piercing / drawing force, puncture force infusion bag cover, soft rubber stopper piercing / drawing force and the like.

(2) The equipment meets many national and international standards such as GB 8808 , GB/T 1040.1 ~ GB/T1040.4 , GB/T 1040.5 , GB/T 4850 , GB/T 12914 , YBB00132002 , ISO 37 , ASTM E4 , ASTM D882 , JIS P8113 , QB/T 2358 , QB/T 1130, etc.

4.3 Equipment Parameters

The test specifications of the equipment are 50 N , 500 N. Customers can choose according to the needs of the test. The test accuracy of the equipment is better than 0.5 , which effectively guarantees the accuracy of the test data. The equipment supports two-way pull and press test modes. There are seven test speeds for users to freely set the pulling and pressing directions. They are 50 mm/min , 100 mm/min , 150 mm/min , 200 mm/min , 250, respectively. Mm/min , 300 mm/min , 500 mm/min . The device integrates eight independent test programs such as stretching, peeling, tearing, and heat sealing, providing the user with a choice of multiple test items. This equipment adopts the pneumatic sample clamping mode to prevent the sample from slipping and ensure the accuracy of the test data. Limiting protection, overload protection and automatic return to the intelligent configuration to ensure the safety of the user's operation. Supports LystemTM laboratory data sharing system for unified management of test data.

5 , test steps

(1) Cut 5 specimens each with a width of 15 mm and a length of 200 mm along the horizontal and vertical directions of the sample .

(2) Each strip is manually stripped 50 mm in advance .

(3) The two ends of the stripped portion of the sample are respectively clamped in the upper and lower jigs of the device, and the longitudinal axis of the stripped portion of the sample coincides with the center lines of the upper and lower jigs.


Figure 3 sample mounting process

(4) Set the parameters such as test speed and sample width, click the test option, and the test starts.

(5) The equipment automatically detects changes in the force during the test and calculates and displays the final peel strength of the sample based on the measured data.

6 , test results

The lateral peel strengths of the aluminum coated composite films for drug packaging tested in this paper were 1.06 N/15mm , 1.13 N/15mm , 1.09 N/15mm , 1.11 N/15mm , and 1.04 N/15mm respectively, and the longitudinal peel strengths were 1.21 N/m respectively. 15mm , 1.19 N/15mm , 1.25 N/15mm , 1.17 N/15mm , 1.23 N/15mm .

7. Conclusion

It is not difficult to see from the above test process that the XLW (EC) intelligent electronic tensile testing machine has the advantages of simple test operation, high degree of intelligence, accurate test results, and high test accuracy in detecting the peel strength of the composite film. XLW (EC) Intelligent Electronic Tensile Testing Machine is a widely used testing equipment. It can be used to test the tensile strength of packaging bags, infusion bag caps, bottle stoppers, etc. in addition to the peel strength of medical packaging composite films. Puncture force, pull-out force, opening force and other performance tests are cost-effective. Labthink has always been committed to provide professional testing equipment and services to customers around the world, R & D testing equipment performance testing covers almost all aspects of soft plastic packaging, understand the relevant testing equipment information, you can visit our website to view Labthink Or call us directly . Labthink expects to enhance technology exchanges and cooperation with enterprises and institutions in the industry!

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December 19, 2023