Papers by Keyword: Plastic Film

Abstract: The increased use of plastics has become a major environmental problem, especially during this pandemic. Plastics have generated many problems, particularly waste disposal, which made the researchers aimed to develop biodegradable plastic through fruit waste material, avocado seeds. From a total of 3 kilograms of the avocado seed, starch was extracted through the traditional starch extraction method. There were three groups with the same ingredients but differing in their concentration; the relationship between the proportion of the ingredients and their respective differences was seen by using ANOVA and Post hoc tests. The samples have undergone a tensile strength test following ASTM D882. From the results, the best experimental group was the group with 40 grams of starch, 20 grams of polyvinyl alcohol, and 10 grams of used cooking oil; however, it is different from the biodegradable plastic bags used as the control group. It could be deduced that it is possible to make biodegradable plastic out of Avocado seed starch that is biodegradable, water-soluble, and non-toxic. However, further analysis may be conducted to provide physical features as commercial plastics.

Abstract: This paper proposes a on-line thickness measurement scheme of thin film based on the capacitance thickness sensor and introduces the composition and principle of thickness measurement system. Then it further states the principle and simulation of the RBF neural network, which can effectively predict the thickness deviation of thin film by setting the appropriate parameters. The monitoring method based on the RBF neural network will reduce production cost and make the film thickness uniformity better, combining the traditional film production line with an new idea of controlling the opening degree of wind ring.

Abstract: This paper discusses the principle of ensilage in twining type of straw bundle cylinder, and necessity of developing the machine twining for plastic film round straw bundle cylinder. With combining with domestic actual production requirements, the rational distribution and optimization design are carried out for the machine twining for plastic film round straw bundle cylinder.

Abstract: People use plastic film mulching to increase soil temperature, keep water and protect crops from insects and grass, therefore, which increased crop yield. However, with the film used years increasing, a lot of film residuals accumulated in the field. As a result, the increasing residuals destroyed soil structure, affected agricultural environment, harmed the crop growth, and furthermore, affected the food safety and human health. So, government should strengthen environmental publicity to improve the understanding of the film pollution, work out the residual film management laws and regulations, develop the recycling economy to reuse the residuals, and research biodegradable films and other ways to prevent agricultural environment from pollution.

Abstract: Based on equations of gas diffusion equilibrium, a new design method, along with a CAD software package, was developed to improve the efficiency of fruit packaging design. Take guava fruit as a case study, the method we developed was used to calculate unknown pack parameters and simulate the dynamic change of in-pack gas concentrations. When the ratio of headspace and fruit volume was 2.5:1, it expended about 200 h before the equilibrium gas exchange was created. However, in the case of 0.3:1 ratio, it needed only 30 h to obtain the equilibrium state. Simulation results are useful for achieving high quality of package design, especially in the case of long transport distance or long-time storage.

Abstract: In this paper, we propose a high throughput method to fabricate ordered metal nano dot array on a plastic film by combination of patterning by nano plastic forming, coating, annealing, and transferring to a plastic film. The effects of process parameters such as indentation load, annealing temperature on the formation of gold nano dot array and dot transfer ratio to a PDMS film are investigated. The results show that an ordered gold nano dot array is successfully formed on the pre-patterned substrate. The transfer of an ordered gold nano dot array to PDMS film is demonstrated.

Abstract: This study has adopted potted experiment to study systematically the effect on soil microbial quantities of the accumulation of five different plastic film: for 0 year ,for 5years ,for 10 years ,for 15 years ,and for 20 years , and has analyzed the change trends of soil microbial activity. Whose relationship with soil quality has also been explored through analysis of the situation on crop growth, so as to provide scientific basis for law of the accumulation of plastic film on soil microbial activity.

Abstract: Patterning vast numbers of micro lenses on a surface increases technical importance to improve characteristics of optical parts such as liquid crystal displays. A cutting method using a diamond tool is examined to make a molding die by which array patterns of many micro lenses are molded. Realizing the cutting procedure, the developed machining system employs a cutting unit actuated by PZT and a synchronous control system of the cutting unit with a NC controller. The present paper investigates machining of micro lenses on the order of 2 kHz, using a piezo-actuated micro cutting unit. Experiments using this unit revealed that it is possible to machine a large number of micro lenses on a molding roll die for plastic film with high precision.

Abstract: In this paper, the main new point is the use of a non-contact combinational system with a capacitive sensor and eddy current sensors to acquire measurement signals and the use of LabVIEW software platform for real time data processing of plastic film thickness. Using a combinational measurement system to replace a traditional micrometer, the thickness of plastic film can be measured intelligently, real time, and in non-contact mode with high precision. The whole system consists of a test unit, a data acquisition unit, a motor driving unit, and a data processing unit. The test unit does measurement by means of capacitive sensor and eddy current sensors. The system is operated on the LabVIEW software platform for automatic control of the whole process. The measurement process is faster. The test results from the combinational measurement system are compared with the results from a micrometer. It shows that this measurement system has higher precision and better repeatability, reliability and feasibility.