Research About Key Technology In The Process Of Producing Foaming Plant Fiber Molding Products

The vegetable fiber products are by the raw material of vegetable fiber, including the scrap paper, the agricultural reject and so on , adding other assistants, after the process of smashing, mixed smelting, mold pressing or extrusion, as well as curing and so on, the products are produced. At present, this kind of products are mainly used in our country to manufacture the disposable tableware as the substitution of foaming tableware, but what attracts more attention of domestic and foreign is it can be developed into vegetable fiber foaming cushion products, which have the bigger amount of use, can substitute expanded plastic liner(EPS), like liner, tray and so on.Some domestic universities and factories are developing the research and development in this aspect, and have made a gradual progress. The Chongqing Blue Sky Environmental Protection Material Limited Company used the raw material of scrap paper, have manufactured Ma Like double basin cushion liners successfully.In the basic of Blue Sky Company's achievement, with the machine of this company, and take there as our basic lab, in stead of scrap paper, we change the raw material into rice pole and culm, which origin is more widespread, cost is more inexpensive. We carry on some modification to the material, For instance through joining the plasticizer improvement, to solve the inherent brittleness of vegetable fiber; Through surface activity processing and beating broom enhancement increase its affinity; Joins the damp-proofing admixture solve the strong question of water affinity. In order to find the reasonable formula, firstly the single factor experiment's research has been conducted, guaranteeing product's compressive strength, then determine the used amount scopes of several main raw material. In the single factor experiment's foundation, analyzing the blue sky environmental company's scrap paper formula, referring to the typical formula which in some papers and patents, this paper proposes 4 formula plans. In the thermo-compression formation craft, use chemistry foaming agent NH4HCO3,using one-stage process (to become spongy and take shape one step completes), has made the new vegetable fiber foaming cushion liner. Through the cushion mechanics experiment and a series of tests, obtains a best performance formula plan. Compared with the original plan of Blue sky environmental company, the new plan have better mechanical properties, including compressive strength, deformation can, cushion coefficient, rebound elasticity and so on; Its humidity resistance, may degrade the performance as well as the hygienic safety performance can also meet the product performance requirement. It indicates that using the crops vegetable fiber manufacture cushion packing products has obvious practical application value and broad prospects.