Anti-mildew, dust-proof and fresh-keeping special net bag for candied apples and preparation method thereof

Abstract

The invention relates to a special mesh bag for anti-mildew, dust-proof and fresh-keeping of candied apples and a preparation method thereof. The process of the method includes: mixing ingredients, heating and melting, introducing a foaming agent for foaming, and double-layer extruding by a mesh extrusion unit , cooling forming, spraying nano anti-mold and fresh-keeping materials, spraying CO on the mesh structure 2 Gas sensitive material, cooling solid type. The original low-density polyethylene is used as the main raw material and modified, and the extrusion process is improved at the same time. The restricted expansion makes the pores inside the mesh staggered and arranged in an orderly manner, and the recovery is increased by 20%. The modified material has the characteristics of anti-static and strong hydrophobicity, which can effectively repel dust and absorb it. In addition, innovation will CO 2 The gas-sensitive material is sprayed on the mesh structure part of the net sleeve. The gas-sensitive material is composed of wall material and wall core, and the wall material is made of La 1 Ca 2 FeO 3 Nano and gliadin and other substances are cross-linked, and the inner CO 2 When the concentration of the gas-sensitive material is >2%, it breaks the wall and slowly releases anti-oxidant and fresh-keeping substances. The net cover of this material also has the effect of anti-mildew and broad-spectrum inhibition of microorganisms. This substance acts on the surface of the fruit, effectively delaying the aging and softening of the fruit.

Description

technical field [0001] The invention belongs to the field of fresh-keeping processing of fruits and vegetables, and relates to a fresh-keeping bag preparation technology, in particular to a mold-proof, dust-proof and fresh-keeping special mesh bag for candied apples and a preparation method thereof. Background technique [0002] Tangxin apples are mainly produced in Aksu, Xinjiang and other regions. The flesh is delicate and the core is transparent. Compared with ordinary apples, it has a richer fruity aroma, sweeter taste, and richer nutritional value. The fruits are ripe and transported to markets across the country every year. However, candied apples are not resistant to storage. Mechanical damage and dust pollution during storage and transportation will aggravate fruit mold and rot, and reduce the appearance quality, resulting in huge economic losses. [0003] In view of the above problems, pearl cotton net bags are currently used for fresh-keeping packaging of post-harv...

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Problems solved by technology

[0008] Through the comparison of technical features, although the above-mentioned published patent documents have similarities in solving technical problems compared with the patent of the present invention, they have different technical features, and the different technical features and the technical effects produced by the different technical features are not disclosed above. documented in the patent literature

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