Research On T Design Method And Cushioning Property Of Paper And Plastic Combination Structure

On the market, the combination of multiple materials used incushioning packaging buffers gradually, especially the combination ofpaper-based cushioning materials and plastic cushioning materials is themost commonly. Combination cushion structure combines the advantagesof a variety of cushioning materials, the way of combination can meet thevarious requirements of packaging.However, the existing references and information are short ofdesign methods about combination cushioning structure. In order to solvethis problem, the equivalent cushioning coefficient can used in design ofcombination cushioning structure. Based on the equivalent coefficientbuffer, building a new design method about combination cushioningstructure will be feasible.Based on transport packaging theory and knowledge system, theequivalent cushioning coefficient formula of overlay and parallelcombination cushions was derived. And the equivalent combinationcoefficients value scope was obtained. The equivalent combinationcoefficient values is between the coefficients of the two combinationmaterials. The equivalent cushioning coefficient formula is expressed bycushioning properties parameters of the two combination materials. Theformula can be used to linear and nonlinear materials conveniently. Theproposed formulas provide a basis for the combination cushion design.Based on equivalent cushioning coefficient, a buffer structureproposed design method and specific steps, focusing on a combination ofpaper and plastic design steps were discussed, because the paper has agreat class plastic cushioning material and non-deterministic, andtherefore should be taken scope of the material stress, stress class scopepaper cushioning material should be linear elastic buckling load beforethe stage.The use of ANSYS/LS-DYNA simulation software falls were onthe same pad thickness EPE/honeycomb paperboard, EPE, honeycombpaperboard cushioning pads conducted three types of drop simulationanalysis, the impact of peak acceleration to get dropped when the simulation results with crisp values comparison. The results showed that:Drop peak EPE/honeycomb composite structure of the acceleration isless than crisp value of the product, which is equivalent to verify thefeasibility of a combination of cushioning coefficient buffer designapproach based. Peak acceleration of EPE/honeycomb paperboardcombination structure is in between EPE and honeycomb paperboard.The simulation results meet the buffer between the theoreticalperformance of composite structures between the two materials.In order to verify the feasibility of a combination of buffer designmethod based on the equivalent coefficient buffer, cushioning materialsusing experimental methods of dynamic compression, EPE/honeycombcombination buffer were dynamic impact test, peak acceleration G andtheoretical calculations of the test to get Gmaxvalues for comparison. Theresults show peak acceleration G of the test less than Gmaxvalue of thetheoretical, it is considered feasible design method based on acombination of cushioning buffer coefficient, and the results areconservative in design.The research results of a combination of cushioning structure isdesigned, and providing a theoretical basis and design methods. Thedesign method can promote the use of a combination cushioningstructure.