Summary : The bottle cap locking and opening torque value of container products such as bottled cosmetics are one of the process parameters of the production unit offline or online key control. Whether the torque value is appropriate or not has a great influence on the intermediate transportation of the product and the final consumption. This article introduces in detail Labthink Languang NJY-20 The torque meter tests the testing process and principle of the opening torque value of the bottle cap of the cosmetic bottle, and provides an example reference for the production quality control process in the cosmetics industry. Key words : bottled cosmetics, nozzle packaging products, hose packaging products, bottle mouth, opening torque, easy opening, leakage, torque meter 1 ,significance People apply makeup to human skin or facial features by applying, spraying, sprinkling, etc., in order to achieve cleaning, beautification, care, maintenance, modification and the like. According to the type, it can be divided into liquid, emulsion, cream, powder, block, and oil. Liquid and lotion cosmetic packaging is roughly divided into bottle, hose and bag, while bottled cosmetics are divided into plastic bottle and glass bottle. The bottle mouth is divided into rotary type, push type and push type, among which rotary bottle The mouth is often packaged in a screw cap and needs to be rotated by humans to be used. If the screw cap is too tight, it is not convenient for the consumer to open. If the screw cap is loose, the quality of the bottle mouth leakage may occur. How to solve the problem that the screw cap bottle-like cosmetics can meet the requirements of the consumer can meet the opening force required by the screw cap to achieve convenient opening and sealing, and it is necessary to use effective monitoring means for verification. For the screw cap bottled cosmetics, this paper is independently developed by Jinan Languang Electromechanical Technology Co., Ltd. NJY-20 The torque meter tests the torque value of the sample, and determines whether the cosmetic is easy to open and leaks easily by the magnitude of the torque, providing a technical reference for the cosmetics industry. 2 ,status quo At present, the main reference for the opening torque performance of domestic test caps GB/T 17876-2010 Packaging container Plastic anti-theft cap " Opening torque test †The method is suitable for the bottle cap which is formed by injection molding, hot pressing or other process using polyolefin as the main raw material. After the bottle cap is packaged and opened, it cannot be restored to its original packaging form. 3 Sample A brand of lotion in a plastic bottle with a plastic anti-theft cap. 4 ,Testing Equipment This article adopts Labthink Languang NJY-20 The torque meter performs a torque test when the cap is opened. 2 NJY-20 Torque meter 4.1 Test principle The sensor is equipped with a torsion angle phase difference sensor, and the strain bridge detection means is used to monitor the electrical signal of the elastic shaft to be twisted during the test of the sample, thereby testing the cap opening torque value or the locking value. 4.2 Scope of application (1) This equipment is specially designed for the torque value test of bottle cap locking and opening of cosmetics, food and medicine (threaded connection) in bottle packaging and hose packaging. Such as hand cream, beverage bottles, medicine bottles, etc. In addition, it can be extended to the torque value test of the cap, nut and bolt locking and opening of thermos and thermos (threaded connection). (2) The device meets several national and international standards: GB/T 17876 , ASTM D2063 , ASTM D3198 , ASTM D3474 , BB/T 0025 , BB/T 0034 . 4.3 Device parameters l Torque specification 20 Nm , 40 Nm , 50 Nm With an accuracy of 1 Level, system resolution 0.001 Nm . l Clamping range 5 mm ~ 170 mm (diameter). l Provides double test mode for opening force and locking force. l The measured peaks are automatically maintained to ensure that the test results are accurately recorded. l Intelligent configuration such as overload protection, automatic clearing, and fault prompting to ensure user safety. l The system uses microcomputer control, with LCD LCD screen and PVC The operation panel allows users to quickly and intuitively view inspection data and results. l stand by Lystem TM Laboratory data sharing system, unified management test report and test results. 5 ,Experimental procedure (1) In the laboratory standard environment, put the sample of the cosmetic bottle in the adjusted state on the instrument fixture and clamp it. (2) Set the instrument mode to " Opening torque †, click to start the experiment. (3) Place your hand on the cap and unscrew the cap. The instrument automatically detects the opening torque value. (4) Follow the steps above and test the rest in turn. 2 Samples. 3 Experimental procedure 6 ,test results The opening torque values ​​of the cosmetic bottle caps of the tested plastic bottles were respectively 0.405 Nm , 0.421 Nm , 0.417 Nm . 7 ,in conclusion One of the process parameters of the production unit offline or online key control is the bottle cap locking and the opening torque value of the bottle packaging product, the nozzle packaging product and the hose packaging product. This article adopts NJY-20 The torque meter tests the opening torque of the cosmetic plastic bottle cap, and has the advantages of high measurement accuracy and good stability, and can ensure that the bottled cosmetic is easy to open and has good sealing property. In addition to testing equipment that tests the opening torque of the bottled product, Labthink Languang also provides professional testing services and equipment for bottled container barriers for customers around the world. Learn more Labthink Languang's testing equipment and services, you can log in View or call 0531-85068566 Consult the specific information of the equipment. Jinan Languang Electromechanical Technology Co., Ltd. is willing to enhance technical exchanges and cooperation with enterprises and institutions in the industry.
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