Zongzi wrapping test point analysis

Zongzi wrapping the merits of the performance of rice dumplings will be preserved in the process of storage, the important factors of zongzi RuanSu composite film packaging is generally divided into the inner packing and outer packing two kinds, this article respectively analyzes these two kinds of packaging performance testing points, and each of the performance test methods are introduced, for the enterprise monitoring package dumplings RuanSu composite membrane material quality to provide the reference. 1, meaning, zongzi is China's traditional festival food, as the extension of storage time, the traditional single leaves packaging packaging form gradually becomes leaves add RuanSu double packing form of composite membrane. Common rice dumplings wrapped with most RuanSu composite membrane materials for plastic composite film, the plastic composite film according to whether can be direct contact with dumplings share two kinds of packaging, packaging, each type of packaging is different, the role of the inner packing, focused on the protection of zongzi ingredients prevent rice dumplings, the outer packing is focused on the protection of packaging integrity, prevent the torn bags, so the internal concerns the performance of the outer packing should be different. Rice dumplings package is targeted in this paper the inner packing, outer packing inspection points were analyzed. 2, there are kinds of barrier performance of rice dumplings, meat, see, see red bean paste, jujube reed, ham reed, sweet reed, egg yolk, reed, etc. , the composition of rice dumplings determines its susceptible to oxidation, the characteristics of easy mildew, therefore higher oxygen barrier property is a basic requirement for rice dumplings package. From complete packing and the process of consumption, the inner packing should always ensure that rice dumplings in a closed environment, so the inner packaging composite membrane materials used have better performance of resistance of oxygen will have good quality effects on rice dumplings. 3, physical and mechanical properties RuanSu good physical and mechanical properties of packaging materials can make its good together with packaging equipment, complete packaging process, and ensure the zongzi wrapping not torn bags in the process of storage and sales, no leakage, no delamination, good appearance. 3. 1 flexibility of zongzi generally adopts the vacuum packaging, packaging good flexibility to make packaging materials good break in the surface of rice dumplings, easy to remove the air inside the bag; The power good flexibility, can make the bags in the fall or impact of external things don't happen to break the bag. 3. 2 puncture resistance zongzi bumps are formed by the surface of the inner packing of hard, can produce larger packaging materials of contact puncture force, thus the inner packing, outer packing should be strong, puncture resistance, to ensure that the bags will not break bag by Angle puncture effect. 3. 3 heat sealing strength heat sealing strength is bag heat sealing performance of the sealing fastness, if packing bag heat sealing strength, poor sealing not firm or the phenomenon of excessive heat sealing, is in the process of storage and sales of rice dumplings, can produce a slow leak, appear up bag, mildewy, deterioration, or by foreign object impact in fall, when torn bags in pincer-like device. Dumplings bag heat sealing strength are in good condition and the inner packing, outer packing materials of heat sealing layer, heat sealing temperature, pressure, time and other factors. 3. 4 high temperature resistance zongzi generally adopts the high-temperature sterilization method for sterilization, which requires the inner packing used RuanSu composite membrane such as the composition of the material, adhesives should be has good high temperature resistance, in order to prevent the bags after high temperature heating appeared torn bags, flat, hierarchical, the phenomenon such as shrinkage. High temperature resistant performance of packaging materials can be simulated dumplings after high temperature sterilization conditions on the packaging of the state of its surface and test the seal performance, testing equipment used in the experiment including high pressure cooker, seal tester and so on. 3. 5 low temperature resistance of rice dumplings need storage at low temperature, in order to prevent the outside packing bag, packing bag under the condition of low temperature performance deterioration and easy appeared torn bags, flat, require RuanSu composite membrane materials should be used with good low temperature resistance. 4 package dumplings, health performance index with the health performance index RuanSu composite membrane materials, mainly in the inner packing material can occur to the rice dumplings in the migration of solvent residue, total amount of migration, heavy metal, potassium permanganate consumption, toluene diamine, inner packing in the process of contact with the steamed rice dumpling, these harmful material will gradually to the rice dumplings in the migration and affect consumer's health, therefore, should try to control the inner packing of harmful substance content can be migrated. 5, conclusion it has good compatibility with dumplings, packaging materials and the material performance timely monitoring is to prevent the zongzi appeared torn bags, deterioration caused by the packing problem issues such as the effective measures. Package dumplings of the inner packing material used in the key monitoring indicators including oxygen transmittance, tensile properties, impact resistance and puncture resistance, heat sealing strength, high temperature resistance, cold resistance, solvent residue, total amount of migration, heavy metals, such as potassium permanganate consumption, toluene diamine, packaging materials key performance including tensile properties, impact resistance and puncture resistance, heat sealing strength, cold resistance, etc.