From June 14 to June 16, 2024, the 2024 China Packaging Industry-University-Research Collaborative Innovation Conference with the theme of "Promoting Collaborative Innovation of Packaging Industry-University-Research and Accelerating Green and Low-carbon Transformation and Development" was successfully held in Hangzhou. The conference conducted extensive and in-depth exchanges and discussions on the latest research results and industry trends in packaging and related fields. GBPI was very honored to be invited to participate. Mr. Zhou, the general manager of the company, took the stage to introduce the factors affecting beverage preservation and the barrier performance test methods to the participants with the theme of "The Impact of Barrier Performance of Beverage Packaging on Freshness". At the same time, he shared the latest results of our company's many major innovative products and transmittance testing technology. Also invited to participate were a large number of well-known domestic companies such as Wahaha, JD.com, SF Express, Mengniu, Yili, Plus, Wuliangye, and Haishun Group. They discussed with GBPI on packaging innovation testing, cutting-edge technology methods, etc., and worked together to promote the high-quality development of the packaging industry. Mr. Zhou also introduced GBPI's test cases, such as high barrier composite film pressure differential oxygen permeability test, bottle carbon dioxide permeability test, aluminum plastic film oxygen permeability test (thickness 0.1mm) and coffee capsule oxygen permeability test solutions. With professional knowledge, rich test cases, and a large number of customer testimonials, GBPI won high attention and enthusiastic response. GBPI is also the first unit in the Asia-Pacific region to develop standard materials for film air permeability, oxygen permeability, and moisture permeability. It can provide production and services for national standard materials for film barrier properties. Speech Scene With cutting-edge technology, outstanding testing expertise, and our collaborative and dynamic team, GBPI is committed to working with leading partners in various industries. Together, we are committed to developing and launching more accurate and efficient testing instruments, aiming to provide global users with excellent solutions to meet their needs and promote industry progress.

With the development of the economy and the improvement of people's living standards, more and more people have pets. People use pets as a support for their feelings and to meet our emotional needs, corresponding to the rapid development of the pet food industry, the market competition is gradually fierce, the importance of pet food packaging has gradually come to the fore. Cat food / dog food packaging bags selected plastic material should have a barrier, heat resistance, sealing, able to prevent food deterioration. General selection of multi-layer plastic composite, common materials include PET/AL/PE, PET/NY/PE, PET/MPET/PE, PET/AL/PET/PE, PET/NY/AL/PE, PET/NY/AL/RCPP, high-temperature dry distillation bags for wet food, soft canned food packaging. Like other foods, pet food has a shelf life. During the shelf life, pet food needs to ensure that no spoilage or loss of nutrients occurs. Pet food nutrients can meet the needs of pet growth, but also is a good natural medium for microbial growth. If the packaging material has poor barrier properties, the oxygen and moisture that passes through the packaging can lead to the growth of microorganisms. Under the action of microorganisms, the nutrients (proteins, fats, etc.) in the pet food will be decomposed, which not only affects the sensory of the pet food, but also loses the nutritional value of proteins, fats and other original substances. The growth of microorganisms is mainly due to three factors: temperature, oxygen, moisture, oxygen is the main external cause of rancidity, so the pet food packaging must have a good barrier performance to the outside world of oxygen, in order to effectively ensure the quality of pet food in the shelf period. This paper utilizes     GBPI's self-developed N530 2.0 differential pressure gas permeability tester to test the oxygen barrier performance of dog food packaging bags sent by customers to provide technical references for relevant pet food package production and use of enterprises to select the oxygen barrier performance test equipment and test methods. Test Principle: N530 2.0 Gas Transmission Rate Tester adopts the principle of differential pressure method. The treated specimen is placed between the upper and lower chambers, the vacuum pump is used to evacuate the whole gas circuit system, and then an atmospheric pressure of experimental gas is added to the upper chamber to form a constant pressure difference between the upper and lower chambers. Under the action of pressure gradient, the gas permeates through the film from the upper cavity to the lower cavity, and the system can calculate the gas permeability and other barrier performance parameters of the specimen through the pressure change of the lower cavity. 01 Test Sample The customer provided dog food packaging bags, its main component to PA as the main barrier function resin multi-layer co-extruded film, bags, sample A's structure PE / Tie / PA / TIE / PE, sample B's structure f...

Abstract: Peeling force is to evaluate the composite film peeling performance indicators, the size of the value reflects the composition of the composite film monolayer membrane composite fastness. Low peeling force of composite film materials, after making the contents of the bag packaging is prone to delamination phenomenon, resulting in composite film impact resistance, puncture resistance and other physical and mechanical properties and barrier properties decline, affecting the appearance and quality of the product. In this paper, we use the GBH-2 electronic tensile testing machine independently developed by Guangzhou Standard International to carry out the peeling test of composite film for pickles packaging, introduce the test standard, test equipment, test process, etc., and effectively evaluate the anti-interlayer peeling performance of composite film for pickles packaging. Pickled vegetables is a general term for a variety of vegetable products made from vegetables as the main raw materials and using different pickling techniques. According to the process and auxiliary materials, pickles can be divided into soy sauce, salt pickles, soy sauce pickles, sugar pickles, vinegar pickles, sweet and sour pickles, shrimp oil pickles, brine pickles, bad pickles and so on. Due to the unique aroma of sweet and crispy pickles, or salty and spicy pickles, and their nutritional value, they have won the favour of the masses and have become one of the most popular foodstuffs to accompany meals. Bagging is a common packaging form of pickles, the bag material is mainly plastic composite film, aluminium composite film, etc., generally using vacuum packaging form to prevent pickles rancidity. In the actual use of the process, some pickles finished packaging will appear composite film delamination phenomenon. If the adhesive used in the composite film and the ink used in the external printing of the package is of poor quality and not resistant to high temperature or acid or alkali, it is easy to cause the composite film to reduce the composite fastness of each single layer of the film and the composite film is prone to delamination after high-temperature sterilisation or contact with the acid or alkali components in pickles. On the other hand, if the composite film using the adhesive coating amount is too low or too thick, or uneven coating, will also cause the composite film between the layers of film composite fastness is poor, easy to occur delamination. Once the phenomenon of delamination occurs, the bag composite film impact resistance, puncture resistance and other physical and mechanical properties will decline, resulting in easy rupture of the bag, leakage; at the same time will also affect the composite film on the outside world of oxygen barrier properties, resulting in an increase in the amount of oxygen through the packaging contents are prone to deterioration, flavour, and seriously affect the appearance of the product and product quality. Theref...

From the analysis of the formation mechanism of printing fastness and test methods, we can better understand the way to improve the printing fastness (mainly on the polyurethane film for discussion).    1. Selection of raw materials In the production of plastic film should be selected when the raw material does not contain or less plastic additives. We can judge the content of additives according to the technical information about the grade, performance and use of the resin. When we have to use raw materials containing more additives, we should also mix them with those without additives. The reason for this choice is that in the process of forming and placing the folding out of the additives will form a film of oil, thus weakening the adhesion of the ink on the film.    2. Raw material modification 1) blending modification: polyolefin and printing performance of polymers blended to improve printing performance is a newly developed compelling method. For example, with polyacrylic resin modified high-density polyethylene greatly improve the adhesion of ink to polyethylene, when which is mixed with 5-20% of polymethacrylic acid early ester (PMMA), the above-mentioned adhesion increased by seven times. Again, such as with more chlorine content of chlorinated polyethylene work mixing, only a small amount can be added to significantly improve the adhesion of polyethylene and oil black. When mixed with 5% CPE-55 blends and ink bonding than (chun) HDPE three times higher. According to another report, some plastic polymer processing aids (rheology modifiers, etc.), in addition to improve yield, eliminate melt rupture, but also has to improve the role of printing adhesion. Add polyacrylic acid resin or chlorinated polypropylene and other reasons to improve the printability of HDPE is based on their poor compatibility with HDPE, when it is in the HDPE as the substrate of the blending system constitutes a dispersed phase and live in the open film surface layer, is obviously conducive to the adhesion with the ink. (2) grafting modification: grafting modification is the use of radiation and other methods to make the polyolefin points to grafting reaction so as to make the polyolefin macromolecular chain with polarity and thus improve the wettability of the material to the ink. Such as maleic anhydride or acrylic acid graft modification of linear density polyethylene after the improvement of its printability. 3) other methods of modification: such as in the polyolefin doped with a small amount of maleic anhydride or its anhydride, but also to a greater extent to improve the polyolefin film ink fastness to print.    3. Printing ink fastness in the printing ink fastness problem, the ink also plays a decisive role. Of course, for different substrates should use its corresponding ink. For example, for cellophane can use nitro cellophane resin ink; for polypropylene film can use chlorinated polypropylene resin ink; for polyethylene film...

Enterprises that aim for sustained development recognize that talent is key. To further enhance the professional capabilities and quality of  employees, GBPI has actively carried out initiatives for staff to participate in academic education and vocational skills training, enriching the spiritual and cultural life of the workforce. Hard work pays off! In March 2024, 7 GBPI employees successfully completed their studies and received their diplomas, an achievement that is both joyous and commendable. 'Only through hard work and struggle can youth sound its most resonant call to action; only through learning and research can life be elevated to its highest form. We are grateful to the company for providing the opportunity to advance our education and a platform to showcase ourselves.' We extend our warmest congratulations once again to the 7 GBPI colleagues who graduated! GBPI has always placed great importance on the enhancement of employees' skills and education, strongly supporting and encouraging staff to pursue further studies, and providing subsidies and rewards for those who obtain relevant academic degrees and professional certificates. The employees, in turn, actively apply the knowledge and skills they have acquired to the company's technological innovation and product R&D, injecting new vigor into the company's development and achieving a win-win situation for both the company and the individuals.