Test item of composite membrane materials for packaging of Ganmao granules -- thermal viscosity

Abstract: Ganmao granules are usually packed in a single dose, and the packaging process of the production line is mostly bag making filling sealing In this process, the thermal viscosity strength that packaging materials can achieve is an important factor related to the overall sealing performance and bag breaking rate of the finished product packaging In this paper, the Labthink Languang htt-l1 thermal viscosity tester is used to test the thermal viscosity of a brand of cold powder aluminized composite film, and the principle, parameters, application scope and test process of the equipment are introduced, which provides a reference for enterprises to determine the appropriate thermal sealing parameters and thermal viscosity strength Key words: thermal viscosity property, thermal viscosity strength, thermal sealing parameters, thermal viscosity tensile tester, Ganmao granules, soft plastic packaging 1 Yiganmao granules is a common powder or small granule medicine In order to ensure the accurate dosage of the medicine, single dose packaging is used This kind of packaging form is generally to seal and fill the packaging bag at the production site of the drug, that is to say, first seal the packaging roll film into the packaging bag, then fill the drug along the unsealed end of the packaging bag, and then seal it after Zui Because the filling process of drugs is only a few seconds different from that of packaging, and with the improvement of production efficiency, the time interval between the two processes is shorter, or even completed at the same time, so when filling drugs, the temperature of the hot sealing edge is not cooled to room temperature, at this time, the fastness of the two sealing edges to bond each other is low, and it does not reach the heat sealing strength when the hot sealing edge is cooled to room temperature, while filling If the adhesive strength of the hot sealing edge is low, it is easy to break the bag under the impact of the medicine, or the hot sealing edge is damaged, which affects the overall sealing performance of the packaging bag The bonding strength when the temperature of the hot sealing edge has not been reduced to room temperature is called the thermal bonding strength The thermal bonding strength is similar to the thermal sealing strength The strength value is closely related to the heat sealing parameters, heat sealing material, thickness and other factors Therefore, after the packaging material has been determined, how to adjust the heat sealing parameters to make the thermal bonding strength of the packaging bag reach the best value of Zui (separator), It is an important measure to reduce the broken bag rate and improve the sealing performance of the finished product packaging Figure 1 common roll film and packaging bag form of Ganmao granules 2 The test is in the process of being developed according to the relevant domestic standards for testing the thermal viscosity strength The test process is based on the American Standard ASTM f1921 3 Test sample the sample tested in this paper is a brand of cold powder packaging aluminum composite film 4 The test equipment used in this test is htt-l1 thermal viscous tensile tester, which is independently developed and produced by Jinan Languang Electromechanical Technology Co., Ltd Figure 2 test principle of htt-l1 hot viscous tensile tester 4.1 The adhesive strength test is the adhesive strength when the sample is not cooled to room temperature after heat sealing Therefore, the time interval between the completion of heat sealing and the beginning of strength test should be strictly controlled It is difficult for ordinary tensile testing machine to meet this requirement This equipment integrates two test functions of heat sealing and strength test After heat sealing, the sample is tested immediately after the set time interval Intensity value The heat sealing parameters of the equipment, including heat sealing time, heat sealing pressure and heat sealing temperature, can be set freely Therefore, different heat sealing parameters can be set to test the thermal adhesive strength of the sample under each parameter, so as to obtain the Zui (separator) good heat sealing parameters of the sample and the thermal adhesive strength under this condition 4.2 the control range of equipment parameter heat seal temperature is room temperature ~ 250 ℃, temperature control accuracy is ± 0.2 ℃; the control range of heat seal time is 0.1s ~ 999.9s; the control range of heat seal pressure is 0.05Mpa ~ 0.7MPa The load range of the equipment is 0 ~ 200N, and 30n, 50N and 100N can also be selectively configured according to the actual test needs The test accuracy is level 1, and the resolution is 0.01N The separation speed of fixture can be selected from 100 mm / min, 150 mm / min, 200 mm / min, 300 mm / min and 500 mm / min The stroke of the equipment is 500 mm The equipment provides four test functions of thermal viscosity, heat sealing, peeling and tensile to meet different test requirements of users Digital p.i.d temperature control technology can not only achieve the set temperature quickly, but also effectively avoid temperature fluctuations Two test start modes, manual and pedal, as well as anti scald safety design, can effectively ensure the convenience and safety of users The equipment is equipped with a variety of practical functions such as automatic reset, fault prompt, overload protection, travel protection, etc to ensure the safety of user operation 4.3 scope of application (1) This equipment is applicable to the test of the thermal viscosity, thermal sealing performance and tensile strength of plastic film, thin film, composite film and other materials, such as instant noodle bag, milk powder bag, liquid milk bag, washing powder bag, cold powder bag and other food, medicine, daily chemical products outer packaging bags, and it can also be applied to the test of the peel strength of composite film, adhesive tape, adhesive composite, composite paper and other materials (2) the equipment can meet many national and international standards such as ASTM f1921, ASTM f2029, QB / T 2358, ybb0012203, etc 5 During the test (1) 35 specimens with a width of 15 mm and a length of about 35 cm were cut along the longitudinal direction of the specimen (2) set test parameters such as heat seal pressure, heat seal time, heat seal temperature, fixture separation speed and delay time (3) take a sample and install it in two clamps of the equipment, with the hot cover of the sample upward (4) after reaching the set heat sealing temperature, use a special sampling knife to press the sample between the two heat sealing heads, and step on the foot switch to heat seal the sample After the completion of heat sealing, and the set delay time is reached, the equipment fixture will automatically separate according to the set fixture separation speed, test the strength of the sample, and report the test results after the test The initial heat sealing temperature of this test is set to 120 ℃, and 5 samples are tested under each heat sealing temperature according to the temperature difference of 5 ℃ 6 The results showed that the thermal adhesive strength of the samples reached Zui value between 135 ℃ and 145 ℃, 4.651 n / 15mm, 4.806 n / 15mm and 4.737, respectively N / 15mm, and the surface of the sample is flat When the temperature is 150 ℃, the thermal bond strength decreases to 4.406 n / 15mm, and there is shrinkage at the heat seal of the sample Therefore, the best heat sealing temperature of the sample is 135 ℃ ~ 145 ℃ 7 Conclusion For the products with bag making filling sealing technology, the thermal adhesive strength of soft plastic packaging materials is an important performance that affects the bag breaking rate and packaging sealing performance This paper introduces the process of testing the thermal adhesive strength of aluminum coated composite film for a cold powder packaging by using htt-l1 thermal adhesive force tester The whole test operation is highly intelligent and the test results are repeated High accuracy and accuracy, which can truly reflect the thermal viscosity of the sample Jinan Languang mechanical and Electrical Technology Co., Ltd is a high-tech enterprise specializing in the research and development and production of packaging testing equipment With the purpose of meeting customer needs, it constantly promotes practical, intelligent, and testing equipment to the market At present, the customers it has served include packaging material production industry, food industry, pharmaceutical industry, daily chemical products industry, automobile, third-party testing structure And universities, research institutes and other industries, fields, to understand the relevant testing equipment, Jinan Languang! 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