A method for testing the heat resistance of hot melt adhesives for sealing boxes
A technology of heat resistance and detection method, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve high accuracy, simple and fast operation, and quality assurance
Active Publication Date: 2018-05-25
广州南沙珠江啤酒有限公司
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[0004] The purpose of the present invention is to provide a new method for detecting the heat resistance of hot-melt adhesives for box sealing, which can more stably monitor the quality and performance of hot-melt adhesives, ensure the quality of finished product sealing, and solve the problem of unpacking of finished products due to high temperature in summer. Quality issues
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[0037] The present invention will be further described in detail through specific preferred embodiments below, but the present invention is not limited to the following embodiments.
[0038] The heat resistance detection method of the hot melt adhesive for sealing of the present invention comprises the following steps:
[0039] 1) Set the heat-resistant temperature standard of the hot-melt adhesive, which is consistent with the actual maximum transportation and storage environment temperature. By continuously increasing the temperature and keeping the temperature for 2 hours, the actual environment temperature rise process can be simulated, and the accurate heat-resistant temperature can be measured;
[0040] 2) Set each peeling and shearing direction and the weight of the weight used to simulate the force of the actual transportation and storage process;
[0041] 3) Set the size and shape of each cardboard and the position and amount of sprayed hot melt adhesive to ensure tha...
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The invention relates to a method for detecting heat resistance of a hot melt adhesive for sealing, comprising the steps: 1), setting a heat resistance temperature standard for the hot melt adhesive to conform to actual highest transport and storage ambient temperature, and continuously increasing the temperature and holding the temperature for 2 h to simulate an actual ambient temperature rise process and to measure accurate heat resistance temperature; 2), setting each peeling and cutting direction and weight of a counterweight used in this direction to simulate stress conditions of the actual transport and storage process; 3), setting the size and shape of each cardboard and the position and usage of the hot melt adhesive to be sprayed, ensuring conformity to actual stress, and ensuring testing accuracy. The method for detecting the heat resistance of the hot melt adhesive is standardized herein, and it is possible to monitor quality performance of the hot melt adhesive more stably, ensure product sealing quality and solve the quality problems of product adhesive failure and loosening due to high temperature in summer.
Description
technical field [0001] The invention relates to a hot melt adhesive, in particular to a method for detecting the heat resistance of the hot melt adhesive for box sealing. Background technique [0002] Hot melt adhesives for box sealing are generally based on thermoplastic polymers, which are prone to creep and have certain limitations in heat resistance. In the past use process, the hot-melt adhesive sealing products with poor heat resistance will be scattered after being transported and stored for a period of time, especially when the ambient temperature is high, and there is no good inspection method for this. , if a large number of carton loose packaging quality accidents occur, it will have a great impact on product quality. [0003] The original testing method and standard for the heat resistance of hot melt adhesives is to store them at 45°C for 3 days, and the seal will not break after tearing, and more than 70% of them can break the paper. However, the actual appli...
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IPC IPC(8): G01N3/18
CPCG01N3/18
Inventor 陈凤刘奋强曾玉萍毛利红林淑佳
Owner 广州南沙珠江啤酒有限公司