Candy wrapping capable of reducing oxygen permeability and preparation method thereof

Abstract

The invention discloses a candy wrapping capable of reducing oxygen permeability and a preparation method thereof. The candy wrapping comprises three layers of membrane materials, which are respectively made from PET (Polyethylene Terephthalate), KPET (Kaolin Polyethylene Terephthalate) and PE (Poly Ethylene). According to the invention, through the blocking wrapping of the three layers of materials, the oxygen permeability of the candy wrapping material can be greatly reduced, and the blocking performance can be improved, so that a goal of prolonging shelf lives of nut candies is achieved. Data acquired through testing shows that oxygen permeability of the candy wrapping disclosed by the invention can be controlled below 6.

Description

technical field [0001] The invention relates to candy packaging with reduced oxygen permeability and a preparation method thereof, belonging to the field of candy packaging. Background technique [0002] As a popular food, candy is deeply loved by consumers and has maintained a rapid development momentum. There are many types of candies, but the main ingredients are granulated sugar, maltose, milk powder, cream, etc., and some are added with essence, edible gum or starch. [0003] The protective function of candy packaging is related to the quality of candies. Due to the large differences in the composition of candies themselves, the selection requirements for packaging materials are also different for different types of candies. For example, candies with low water content tend to absorb moisture and cause the product to swell and return to sand; candies with high water content are prone to shrinkage and mildew, and starch, cream, etc. are prone to oxidation and deteriorati...

AI Technical Summary

Problems solved by technology

[0007] (1) Due to the difference in coating process and coating amount of PVDC coated substrates, it is easy to cause uneven thickness of the coating layer, easy to produce pinholes and blind spots, and affect the barrier performance of the substrate

[0008] (2) During the printing process of two-layer packaging materials, the coating surface is the printing surface. The ink and solvent in printing will corrode the coating layer, forming more uneven surfaces, pinholes and blind spots, which will affect the barrier performance

[0009] (3) During the compounding process of the two-layer packaging material, due to the direct contact between the printed coating layer and the multi-track rollers, mechanical damage is prone to occur, which affects the barrier performance

Once the coating supplier and the printing composite packaging material supplier lack the necessary detection means, or even neglect quality control, it may be fatal to the user of the packaging material

Moreover, the test data shows that the oxygen permeability rate of this two-layer composite packaging material is difficult to be lower than 7, mostly between 8-12, and the result is high