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CN-121976415-A - Antibacterial functional packaging box and preparation method thereof

CN121976415ACN 121976415 ACN121976415 ACN 121976415ACN-121976415-A

Abstract

The invention relates to the field of packaging box materials, in particular to an antibacterial functional packaging box and a preparation method thereof. An antibacterial functional packaging box at least comprises a fiber base material and a composite antibacterial composition agent, wherein the mass ratio of the antibacterial functional packaging box is (9-12) (1-2). According to the antibacterial functional packaging box provided by the application, the performance optimization of antibacterial performance and physical performance is realized through an innovative in-pulp functionalization technology, and durable and efficient dual antibacterial protection is formed, so that the defects of easiness in failure and uneven protection in traditional surface treatment are fundamentally overcome. And meanwhile, the packaging box is ensured to obtain excellent antibacterial capability, meanwhile, not only is excellent mechanical strength and damp-heat resistance stability maintained, but also key functions such as further balancing air permeability and the like are realized, the multifunctional integration is realized, and the final product has the characteristics of environmental friendliness and balanced and reliable performance, and can meet the high standard requirements of multiple fields on packaging safety and application functionality.

Inventors

  • KONG SHUMIN

Assignees

  • 浙江金亿嘉包装有限公司

Dates

Publication Date
20260505
Application Date
20260316

Claims (10)

  1. 1. An antibacterial functional packaging box is characterized by at least comprising a fiber base material and a composite antibacterial composition agent, wherein the mass ratio of the fiber base material to the composite antibacterial composition agent is (9-12) (1-2); The fiber base material is a combination of sulfate wood pulp and recycled paper pulp, and the mass ratio of the sulfate wood pulp to the recycled paper pulp is (6-8) (2-4); The composite antibacterial composition is a combination of silver-loaded diatomite composite particles and thyme essential oil, and the mass ratio of the composite antibacterial composition to the thyme essential oil is (3-4) (1-2).
  2. 2. The antibacterial functional packaging box of claim 1, wherein the sulfate wood pulp is bleached softwood sulfate wood pulp, and the average fiber length of the sulfate wood pulp is 3-5 mm.
  3. 3. The antibacterial functional packaging box of claim 2, wherein the average fiber length of the recycled paper pulp is 0.5-1.2 mm.
  4. 4. The antibacterial functional packaging box of claim 3 is characterized in that the preparation method of the silver-loaded diatomite composite particles specifically comprises the following steps of S1, drying diatomite at 100-105 ℃ for 2-3 hours, mixing the diatomite and silver-loaded zirconium phosphate, adding the mixture into deionized water for mixing, S2, stirring at 400-500 rpm for 50-60 min, performing ultrasonic treatment at 200-300W for 20-25 min, filtering after completion, drying at 55-60 ℃ at low temperature, and dispersing the mixture through a 400-500-mesh sieve.
  5. 5. The antibacterial functional packaging box of claim 4, wherein the mass ratio of the diatomite to the silver-loaded zirconium phosphate is (90-110): 3-8.
  6. 6. The antibacterial functional packaging box of claim 5, further comprising a composite reinforcing agent and a functional auxiliary agent, wherein the mass ratio of the fiber base material to the composite reinforcing agent is (9-12) (0.4-0.8).
  7. 7. The antibacterial functional packaging box of claim 6, wherein the composite reinforcing agent is a combination of cationic starch, polyglycolic acid and polyethyleneimine, and the mass ratio of the composite reinforcing agent is (2.5-4): 1-1.5): 0.8-1.2.
  8. 8. The antibacterial functional packaging case of claim 7, wherein the intrinsic viscosity of the polyglycolic acid is 0.5-1 dL/g, and the number average molecular weight of the polyethyleneimine is 1000-2000 Da.
  9. 9. The antibacterial functional packaging box of claim 8, wherein the functional auxiliary agent comprises a retention aid, a sizing agent, a ventilation regulator and a dispersing agent, wherein the retention aid is cationic polyacrylamide or chitosan, and the sizing agent is at least one of alkyl ketene dimer, alkenyl succinic anhydride and paraffin emulsion.
  10. 10. A preparation method of the antibacterial functional packaging box according to any one of claims 1-9 is characterized by comprising the following steps of S1, fluffing a fiber base material, pulping, controlling the overall pulping degree to be 32-36 DEG SR, diluting the pulp to be 1.5-2% in a pulp preparation tank, sequentially adding a composite antibacterial composition agent, a composite reinforcing agent, a retention aid and a dispersing agent at the rotating speed of 200-300 rpm, mixing and stirring for 30-40 min, S2, adding the rest other raw materials into the pulp, purifying the pulp by a pressure sieve, then forming on a net, pressing a wet paper sheet by a plurality of rollers, drying by a gradient of 105/115/95 ℃, applying a surface of 1-2% oxidized starch liquid, then calendaring and coiling to obtain a paperboard base paper, S3, preparing the base paper into required corrugated paper on a corrugated paper production line, pasting the corrugated paper with corrugated paper board to prepare corrugated paper board, and printing, die-cutting the corrugated paper board, and pasting the corrugated paper board to prepare the final antibacterial functional packaging box.

Description

Antibacterial functional packaging box and preparation method thereof Technical Field The invention relates to the field of packaging box materials, in particular to an antibacterial functional packaging box and a preparation method thereof. Background With the continuous improvement of the safety requirements of food, medicine, daily chemicals, electronics and other industries on product storage and transportation, the functional requirements of packaging materials are increasingly outstanding, and particularly, the antibacterial functional packaging becomes a research hot spot in the aspects of inhibiting microorganism breeding and prolonging the quality guarantee period of products. The traditional packing box is mostly made of basic materials such as corrugated board, plastic or metal, and the main functions of the traditional packing box are concentrated on physical protection, buffering and identification, and the traditional packing box lacks the capability of actively inhibiting or killing microorganisms such as bacteria, mold and the like. Under the conditions of high humidity, high temperature or long-time storage and transportation, bacteria or mold are easy to grow in the package, so that the quality and the safety of the packaged product are affected, cross contamination can be possibly caused, and the problem is particularly remarkable in the fields of foods and medical appliances. To address the above challenges, researchers have recently attempted to introduce antibacterial agents into packaging materials to impart antibacterial properties thereto. Common antimicrobial agents include inorganic, organic, natural extracts, and the like. These antimicrobial components may be incorporated into the packaging substrate by coating, blending, grafting, or microencapsulation. For example, the prior art scheme can disperse nano silver particles in water paint and then apply the water paint on the surface of a paper box through a coating process, and research is also carried out on impregnating paper board with chitosan solution and destroying microbial cell membranes by utilizing the natural cation characteristics of the chitosan solution. In addition, some patents propose to adopt a multi-layer composite structure, and a slow-release antibacterial microsphere is embedded in an intermediate functional layer so as to realize a long-acting antibacterial effect. Although the prior art improves the antibacterial ability of the packaging material to a certain extent, the prior art still has obvious technical problems in practical application. Firstly, the antibacterial agent is easy to be inactivated by heating, shearing or environmental influence in the processing process and in individual application environments, so that the antibacterial efficiency is reduced, secondly, the antibacterial components in the prior art are concentrated on the surface of the package, the uniform distribution of the whole antibacterial component is difficult to realize, the uneven antibacterial effect and the poor durability are caused, and finally, most of functional packages are used for improving the antibacterial performance, meanwhile, the mechanical strength, the air permeability or the durability of the material are always sacrificed, and the functional performance and the environmental protection performance cannot be considered. Therefore, development of a novel antibacterial functional packaging box with high efficiency, excellent antibacterial capability, mechanical property, environmental adaptability and durability and a preparation method thereof are needed to overcome the limitations of the prior art. Disclosure of Invention The invention aims to provide a packaging box material capable of overcoming the problems in the prior art and keeping excellent antibacterial efficiency, antibacterial balance and durability, and meanwhile, the packaging box material can avoid performance contradictions existing in the prior art, keep comprehensive functionalities such as environmental adaptability, mechanical property and air permeability of the packaging box material and meet more complex application requirements in the existing packaging field. In order to achieve the above object, the present invention provides the following technical solutions: the first aspect of the application provides an antibacterial functional packaging box, which at least comprises a fiber base material and a composite antibacterial composition. In the preferred scheme, the mass ratio of the fiber base material to the composite antibacterial composition is (9-12) (1-2). More preferably, the mass ratio of the fiber base material to the composite antibacterial composition is (10-11): 1.2-1.8. Preferably, the fibrous substrate is a combination of kraft pulp and recycled pulp. In the preferred scheme, the mass ratio of the sulfate wood pulp to the recovered paper pulp is (6-8): 2-4. More preferably, the mass ratio of the sulfate wood pulp to the r