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  • You need to understand these test methods and standards for biodegradable plastics
    You need to understand these test methods and standards for biodegradable plastics 2021-03-22
         Biodegradation generally refers to the decomposition of microorganisms. Microbial decomposition substances that exist in nature will not cause negative effects on the  environment. The degree of degradation is called degradation index. Biodegradable materials refer to materials that can be completely decomposed by microorganisms (such as bacteria, fungi, algae, etc.) into low-molecular compounds under natural environmental conditions with appropriate and indicative deadlines. Biodegradability is an important property of PBS polyester. At present, the main method for evaluating the biodegradability of plastics in the world is the composting method. Compost contains rich sources of microorganisms, which can macroscopically reflect the biodegradation of plastics in the natural environment to a certain extent. performance. GBPI Compost Degradation Tester can provide compost performance testing of most plastic products on the market. Testing products Test items Testing standard Disposable plastic tableware, Plastic particles disposable plastic straws, Disposable degradable tableware:plastic bags, Biodegradation rate of aerobic composting test GB/T 18006.1 General technical requirements for plastic disposable tableware HJ/T 202 Technical Requirements for Environmental Labeling Products Disposable Tableware  Packaging products and plastic products: 1. Plastic shopping bag, 2. Mulch, 3. Sealing tape, 4. Plastic, Biodegradability EN 13432:2000 Packaging. Requirements for evaluating the recyclability of packaging through synthesis and biodegradation ASTM D 5338 Test method for aerobic biodegradation of plastic materials under composting conditions ASTM D 5510 Improved MITI test (rapid biodegradability) OECD 301C thermal aging degradation plastic operating standard ASTM D 5511 Method for measuring the anaerobic biodegradability of plastics under high-solid anaerobic digestion conditions ASTM D 6954 Test requirements for oxidation and biodegradation of plastics under environmental conditions GB/T 16716.7-2012 Packaging and Packaging Waste Part 7 Biodegradation and Composting GB/T 20197-2006 Definition, classification, marking and degradation performance requirements of degradable plastics GB/T 22047-2008 Determination of the final aerobic biodegradability of plastic materials in the soil-using the method of measuring the required amount in a closed absorption meter or measuring the released carbon dioxide GB/T 19277.1-2011 (IDT ISO 14855-1:2012) Determination of the final aerobic biodegradability and disintegration capacity of materials under controlled composting. The method for measuring the released carbon dioxide is used. Part 1 General method GB/T 2461-1999 Degradable polyethylene film for packaging  Packaging products         and plastic     products: 1. Plastic shopping bag, 2. Mulch, 3. Sealing tape, 4. Plastic, Biodegradability EN 13432:2000 Packaging. Requirements for e...
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  • Product Packaging Quality Control ---- How to test the compressive strength of inflatable packaging bags
    Product Packaging Quality Control ---- How to test the compressive strength of inflatable packaging bags 2021-03-15
    Importance of compressive strength of packaging bags: Product packaging is prone to stacking cracks and crush damage during transportation and storage. Therefore, the main concern in the field of product testing is the protective effect of packaging. This requires us to formulate a test plan to evaluate the effect of packaging, and continuously improve the design based on the results to achieve the best results-under the premise of meeting product protection: reduce the total cost of product packaging as much as possible, and ensure the hot adhesion of the packaging bag The test is qualified, and the puncture resistance of the packaging bag is improved.It is well known that the packaging bags under stacking will bear a lot of pressure. If the pressure resistance of the packaging is poor, bag breakage is easy to occur. Therefore, it is required that the packaging bag body and the sealing part should have high pressure resistance. This article uses the GBPI compression tester for bag packaging to test the pressure resistance of food packaging bags as an example to introduce the test principle and test process content to everyone. Provide a reference for companies to monitor the pressure resistance of product packaging. Many food factories use inflatable packaging bags. For nitrogen-filled packaging, the food can be placed in a low-oxygen environment, which has the effect of preventing food from oxidative deterioration and mold. However, the gas filled in the packaging has advantages and disadvantages. While protecting the food, it will have a greater impact on the packaging bag when it is squeezed or impacted by external forces, which requires the packaging bag to have higher flexibility. And sealing fastness, so strengthening the test of the pressure resistance of inflatable packaging can effectively reduce the bag breaking rate in the process of stacking and transportation. By simulating the squeezing situation of the test sample stacking, a certain pressure is applied to the sample, and the deformation and leakage of the test sample after being kept under the applied pressure for a certain period of time. In addition, you can also set the pressure value to be applied to the test sample multiple times by testing the maximum pressure, and each setting is increased on the basis of the last force value. After the predetermined number of times is reached, the total deformation of the test sample is detected, etc. Test the compressive resistance of the test sample. compressive strength of packaging bags test process: 5 samples of inflatable packaging bags with intact packaging are randomly selected. Set the test pressure, test time and other parameters. Please note that the pressure cannot be adjusted too high, otherwise it will damage the sensor, it is recommended to adjust to 0.1Mpa first, if the pressure is too low, you can gradually adjust) (1) Take one of the samples and put it between the two test boards of the device, click the test option...
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  • What is the test process and steps of the GBPI mask synthetic blood penetration tester
    What is the test process and steps of the GBPI mask synthetic blood penetration tester 2020-10-23
    Guangzhou Biaoji Packaging Equipment Co., Ltd. (GBPI) is a professional manufacturer of laboratory testing equipment. It has an elite team with more than 20 research and development experience in the testing industry. The face mask testing machine such as EN14683 BFE test apparatus、paticulate filtration efficiency tester、flame retardant face mask tester and so on developed by our company is well received by customers in the market. GBPI mask consultant takes you to understand the test process and steps of the synthetic blood penetration test instrument for masks. Mask synthetic blood penetration tester Principle: The synthetic blood permeability tester for masks is used to test the resistance of medical masks, disposable masks and other protective masks to the penetration of synthetic blood under different test pressure levels. Standards: GB/T 19083-2010 Technical requirements for medical protective masks 5.6 Synthetic blood penetration barrier performance YY/T0469-2011 Medical surgical mask 5.5 Synthetic blood penetration test ASTMF1862 Test Method for Resistance of Synthetic Blood Permeability of Medical Masks (Fixed Volume of Horizontal Jet at Known Speed) ASTMF2100 Synthetic blood penetration resistance in the performance requirements of medical masks EN14683 Specifies the structure, design, performance requirements and test methods of medical masks Parameters: 1.Spraying distance: 300mm~305mm adjustable 2.Jet speed: 400cm/s-7000cm/s adjustable Features: 1. The sample is specially customized for the fixing device to simulate the actual use of the outlet cover, and the sample is kept in the special experimental area; 2. Constant pressure spray device, which can spray a certain volume of synthetic blood within a controlled time; 3. It can fully simulate the injection speed corresponding to the average human blood pressure 10.6kPa, 16kPa, and 21.3kPa for testing. Testing process: Fix the mask sample on the sample holder of the instrument, and spray the synthetic blood from the nozzle horizontally to the target area of  the sample to be tested at a distance from the center of the sample at the set pressure, and visually inspect it within 10 seconds after removal. Testing steps: 1.Pull down the sample cover of the instrument, clamp the sample on the fixture, and close the sample holder and protective cover after fixing. 2.Set the relevant parameters (spray pressure and spray time), click [feed] to pour the synthetic blood, adjust the height of the nozzle, and press "[Start]. At this time, spray horizontally toward the tested mask behind the positioning target, and hear With a beep, the instrument automatically stops spraying and the experiment is over. 3.After the test is all over, the synthetic blood residue in the test solution tank is cleaned, replaced with distilled water, and the entire pipeline is cleaned. After the nozzle sprays clean water, continue to drain all the clean water in the test solution tank. Close the outlet valve of the ...
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  • Guangzhou Biaoji Packaging Equipment Co., Ltd.  (GBPI ) International Team continues to grow
    Guangzhou Biaoji Packaging Equipment Co., Ltd. (GBPI ) International Team continues to grow 2020-10-19
        Guangzhou Biaoji Packaging Equipment Co., Ltd. (GBPI) is a supplier of flexible packaging testing equipment, protective equipment testing equipment, and testing solutions. It is an enterprise integrating R&D, production and sales of testing equipment, packaging equipment, modified atmosphere preservation equipment and other products, as well as providing third-party testing and standard material competence verification.     A professional manufacturer focusing on the development and production of packaging material testing instruments and tube sealing machines. The company provides complete packaging testing laboratory construction programs and testing instruments for institutions in dozens of countries and regions around the world. The scope covers: inspection institutions, scientific research institutions, food and pharmaceuticals, daily chemical cigarette packs, packaging factories, new materials, new energy, film factories and other different fields. Allow users all over the world to share the standard testing technology and testing solutions.     In 2010, it was awarded the high-tech enterprise of Guangdong Province, and obtained the national standard material certificate, CNAS laboratory accreditation certificate, Guangzhou enterprise research and development organization certificate, etc. Guangzhou Standard International maintains long-term cooperative relations with domestic and foreign universities and scientific research institutions for mutual benefit and win-win results. The company has won the trust and cooperation of global customers with its continuously enhanced innovation capabilities and increasingly improved delivery capabilities.     Due to the needs of international business development, the foreign trade team continues to grow. The company recruits several personnel in China: International Sales Specialist, Technical Service Engineer, and International  Marketing Specialist. The specific requirements are as follows: if you are interested, please send your resume to gbpisales6@gbtest.cn International Sales Specialist: Job Responsibilities 1. Responsible for the development of new customers and the maintenance of old customers; 2. Responsible for participating in outing exhibition activities 3. Responsible for customer inquiry and quotation, and regularly recommend products with customers 4. Responsible for collecting, analyzing, organizing and archiving market information such as customer needs and competitors Qualifications: 1. Bachelor degree or above, major in international trade, business English, and marketing; 2. CET-6, fluent in spoken English, able to communicate fluently with foreign clients; 3. Being upright, serious and responsible, with strong language skills; 4. Obey the arrangement of superiors and have a strong sense of team honor; 5. Have working experience in the same position, even outstanding fresh graduates. other:...
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  • how to calculate compression strength of corrugated box?
    how to calculate compression strength of corrugated box? 2020-09-25
        The compression strength of cartons is the most important quality index required by many commodity packaging. During the test, the corrugated carton is placed between two pressure plates and pressed to pressure when the carton is crushed. This is the compression strength of the carton, expressed in kn. compression strength of predetermined carton     Carton boxes require a certain degree of compression strength, because during storage and transportation after packaging, the cartons stacked in the bottom layer are under the pressure of the upper cartons. In order to avoid collapse, they must have the appropriate compression strength. Not only can the carton compressor be tested, the compression strength of the carton can be calculated by the following formula: P = KW (n-1)     Where p is the compression strength of the carton, w is the weight of the carton after packing, n is the number of stacking layers, and K is the stacking safety factor, and K is the stacking safety factor Calculate the stacking layer number n according to the stacking height h and the height of a single carton h, and N = H / h. The stacking safety factor is determined according to the number of stacking layers of the goods. According to national standards, for storage periods less than 30d, k = 1.6; for storage periods of 30d-100d, k = 1.65; for storage periods greater than 100D, K = 2.0.     Due to the influence of various factors in the production process, the final compression strength of the cartons produced with raw materials may not be completely consistent with the estimated results. Therefore, the ultimate accurate method to determine the compression strength of corrugated boxes is to test the compression strength of corrugated boxes with a carton compression tester     after constant temperature and humidity treatment. For small and medium-sized factories without testing equipment, a board can be covered on the carton, and then the same amount of weight can be stacked on the carton to roughly determine whether the compression strength of the carton meets the requirements     After the compression strength of the carton is determined according to the raw materials, the appropriate carton board and corrugated base paper should be selected to produce the corrugated carton, so as to avoid blind production and cause waste There are many formulas for calculating the compression strength of cartons based on the ring compression strength of the base paper, but the more concise and practical formula is the Kellicutt formula, which is suitable for estimating the compression strength of 0201 cartons.     Profession creates value, GBPI creates quality products! GBPI produces packaging compression testing machines, hot tack tester,heal seal strength tester, and other packaging testing instruments. Welcome to consult!
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