Cosmetic packaging related detection methods and detection instruments

As a fashionable consumer product today, cosmetics not only need exquisite packaging, but also need to be optimally protected during transportation or shelf life. As a well-known testing instrument and testing service provider in China, it combines the needs of cosmetics packaging testing and application, and briefly summarizes the testing items and inspection methods, with a view to assisting cosmetic manufacturers and cosmetic packaging and supplying companies in packaging inspection and quality control. A hand.

First, cosmetics transport packaging testing

After cosmetics, such as transportation, shelf display, etc., must arrive at the hands of consumers, they must have good transport packaging. At present, the shipping and packaging of cosmetics is mainly based on corrugated boxes. The main testing index is the compressive strength and stacking test of the carton.

1. Carton compressive strength test: Here we introduce the ZB-KY carton compressive test machine. During the test, the corrugated box was placed between the two pressure plates of the ZB-KY carton compression tester, the compression speed was set, and the pressure at the start of the test pressurization until the carton was crushed was the carton compressive strength expressed by KN. Carton compressive strength testing must pay attention to set the pre-press value (usually 220N) in accordance with the test standard before testing. Zhongbao Testing Equipment Co., Ltd.

2. Carton stacking test

The cartons need to be stacked during storage and transportation. The cartons at the lowest level must withstand the pressure of multiple cartons at the top. In order not to collapse, they must have suitable compressive strength after stacking, so stacking and maximizing pressure are required. Double force detection is very important. ZB-KY built-in stacking test function can directly give stacking test results.

3, simulated transport vibration test

After the packaging product is bumped in transit, it may cause a corresponding impact on the product, so we need to simulate the vibration of the product during transport to carry out reliability test. Here we take the ZB-MZ-100 analog transport vibration test stand as an example. The product is fixed on the test bench, and the product is subjected to vibration test in the corresponding working time and rotation speed. This product is suitable for European international standards and is an ideal transportation vibration detection device. Zhongbao Testing Equipment Co., Ltd.

4, package drop test

It is indispensable for the product to fall during handling or use. It is also crucial to test its resistance to falling. Take the ZB-DL-150 Single Wing Drop Tester as an example, the packaged product (or bare In other words, the product is dropped without any packaging. The product is placed on the drop tester support arm and the product is free-fall tested from a certain height (including full drop of edges, corners, and faces of the product).

Second, cosmetics packaging printing quality inspection

Cosmetics have good visual aesthetics and are beautifully printed. It is more important for the detection of their print quality. At present, the routine items for the inspection of cosmetics printing quality are the abrasion resistance (anti-scratch performance) and adhesion fastness of printing ink layers, and color discrimination.

1, wear resistance testing

Take the ZB-YM Ink Decoloration Tester as an example. Samples were prepared in accordance with the provisions of GB7706, and then placed on the test plane of the friction tester for fixing, and 80 g of clean offset paper was installed on the load block. After setting the number of frictions, the test is started (generally 40 round trips), and the print quality is finally evaluated based on the change in density before and after the test. Generally more than 70% of the conditions for conformity assessment. Zhongbao Testing Equipment Co., Ltd.

2, color discrimination:

People usually observe the colors in daylight, so the elaborate color analysis work in industrial production requires the illumination light source to have a spectral power distribution with approximately true sunlight, namely the D65 standard light source specified in the CIE. However, in the color matching process, there is a very special phenomenon: the sample and the sample will appear in the same color under the first light source, and under a different light source there will be a color difference, the so-called metachromatic phenomenon, so the selection criteria When the light source box must have dual light sources, in this case ZB-600 standard light source color light box as an example, the instrument is equipped with dual light source D65 and F/A light, a good solution to the problem of the same-color spectrum.

Third, cosmetics sticker detection

The application of self-adhesive labels in cosmetic packaging is extensive, and the test items mainly focus on the adhesive properties of self-adhesive labels (adhesive or pressure-sensitive adhesive). The main test items are: initial viscosity performance, sticky performance, Peel strength (peel force) three indicators.

1. Initial tack test: Take the ZB-JDN early tack tester as an example, and adopt the inclined surface ball method. When a short contact occurs between the adhesive surface of the steel ball and the pressure-sensitive adhesive tape sample with a slight pressure, the adhesive tape is applied to the steel ball. The adhesion was used to test the initial tackiness of the sample, and the tackiness of the sticker was characterized by the maximum steel ball number that could be stuck. Zhongbao Testing Equipment Co., Ltd.

2. Sticking property: Take ZB-JDNC holding sticky tester as an example, hang the test board with sticky sample vertically on the upper and lower ends of the test rack and hang the weight of the specified weight. After a certain period of time, the sample is glued. The amount of displacement or the time the sample was completely detached was used to characterize the tack-holding performance of the sticker.

3, peel strength: Peel strength is an important indicator to measure adhesive bond performance. Take ZB-L-2000N intelligent electronic tensile testing machine or ZB-BL electronic peeling testing machine as an example. The self-adhesive label is cut into 25mm wide with the sampling knife, and the self-adhesive label is rolled on the standard roller. On the test plate, after the sample and the test plate are pre-striped, the test plate and the pre-striped adhesive label are respectively placed in the upper and lower chucks or the left and right chucks of the test intelligent electronic pull test or the electronic peel tester. Set the test speed 300mm/min, start the test and test, and calculate the final peel strength KN/M.

Fourth, cosmetic packaging and packaging materials other physical and mechanical indicators testing

The mechanical properties of cosmetic packaging play a very important role for cosmetics during packaging, processing, transportation, and shelf life. Its quality directly determines the safety of food in circulation. Summary All test items mainly include: tensile strength and elongation, composite film peel strength, heat seal strength, seal and leakage, impact resistance, and surface smoothness properties of the material, etc. Zhongbao Testing Equipment Co., Ltd.

1, tensile strength and elongation, peel strength, heat seal strength, tear performance

Tensile strength means that the material is subjected to the maximum stress value before it is broken. Through testing, it can effectively solve the package damage and fracture caused by the external force because the selected packaging material has insufficient mechanical strength. Peel strength, also known as composite strength or composite fastness, is the detection of layer-to-layer adhesive strength in a composite film. If the adhesive strength is too low, problems such as leakage due to separation between layers can easily occur during use of the package. The heat seal strength, also known as the heat seal strength, is the strength of the test seal. During the storage and transportation of the product, once the heat seal strength is too low, problems such as cracking of the heat seal and leakage of the contents may result. To test the above indicators, all need to be tested with a tensile testing machine. Here, take the ZB-L-2000N liquid crystal display type electronic tensile test as an example, according to the test standards corresponding to different inspection items, prepare samples, and prepare samples. Place the upper and lower fixtures on the tensile tester, set the test speed to 300mm/min (the tensile test can also be set to 500mm/min), and print the test results after the test is completed. In addition, for the detection of the heat seal strength, it is necessary to use the "heat seal tester" to prepare the sample. This instrument is also one of the commonly used equipment for cosmetic packaging laboratories.

2, impact resistance testing,

The control of the impact resistance of the packaging material can prevent the occurrence of the damage of the packaging surface due to the lack of material toughness, and effectively prevent the product from being damaged due to the impact resistance of the packaging material or the poor drop performance during the circulation. Dart impact testers are generally required for testing. The ZB-LQ-200 falling ball impact testing machine is used as an example here. The falling ball impact testing machine determines the impact resistance of the plastic film through the free falling ball method. This is a quick and easy test method used by most cosmetic packaging manufacturers and cosmetic manufacturers to test the energy required to tear film samples under defined free-fall impact conditions. When 50% of the film sample is damaged under the specified conditions, the packaging breaks the energy. Zhongbao Testing Equipment Co., Ltd.

3, salt spray corrosion resistance test

When the product is used by sea or in coastal areas, it will be corroded by sea air or mist. ZB-Y-60 salt spray test chamber is for the surface treatment of various materials, including paint, electroplating, inorganic and organic film, After corrosion treatment such as anodic treatment and anti-rust oil, test the corrosion resistance of the product.