Preparation method and application of concentrated active packaging patch

A concentrated and active technology, applied in biocide-containing paints, film/sheet adhesives, antifouling/underwater coatings, etc., can solve problems such as increased costs and waste, and achieve improved utilization and reduced The effect of dosage and prolonging the action time

Active Publication Date: 2021-08-20
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in practical applications. For example, in terms of cost, adding essential oils to the film for slow release, the film needs to be applied in a large area during application. Compared with concentrated packaging raw materials, there is a large area of ​​waste and increased costs. Therefore, it is necessary to develop concentrated active packaging with low cost and excellent effect.

Method used

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  • Preparation method and application of concentrated active packaging patch
  • Preparation method and application of concentrated active packaging patch
  • Preparation method and application of concentrated active packaging patch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Microemulsion preparation: plant essential oil and ultrapure water are mixed according to the ratio of 4:6 (v / v), and at 50°C, gradually add Tween 80 and absolute ethanol according to the ratio of 3:1 (v / v) v) Surfactants mixed in the same ratio and stirred until clear and transparent, it is an essential oil microemulsion.

[0033] (2) Preparation of microcapsules: Spray a uniform mixture of cornstarch and β-cyclodextrin at a ratio of 60:5 (w / w) with 75% absolute ethanol, and obtain 60-mesh particles after drying. Mix evenly with the essential oil microemulsion prepared in step (1) at a ratio of 1:3 (w / w) to obtain essential oil microcapsules.

[0034] (3) Preparation of concentrated active packaging stickers: uniformly mix the essential oil microcapsules prepared in step (2) with the adhesive in a ratio of 1:2 (w / w) to obtain a coating solution containing essential oils, which is passed through a continuous coating machine Coated on the self-adhesive base material...

Embodiment 2

[0036] (1) Preparation of microemulsion: Mix plant essential oil and ultrapure water at a ratio of 6:4 (v / v), and gradually add Tween 80 and absolute ethanol at a ratio of 3:1 (v / v) at 50°C. v) Surfactants mixed in the same ratio and stirred until clear and transparent, it is an essential oil microemulsion.

[0037] (2) Preparation of microcapsules: Spray a uniform mixture of corn starch and β-cyclodextrin in a ratio of 70:5 (w / w) with 80% absolute ethanol, and obtain 80-mesh particles after drying. Mix evenly with the essential oil microemulsion prepared in step (1) at a ratio of 2:1 (w / w) to obtain essential oil microcapsules.

[0038] (3) Preparation of concentrated active packaging stickers: uniformly mix the essential oil microcapsules prepared in step (2) with the adhesive in a ratio of 1:2 (w / w) to obtain a coating solution containing essential oils, which is passed through a continuous coating machine Coated on the self-adhesive base material and compounded with PET t...

Embodiment 3

[0040] (1) Preparation of microemulsion: Mix plant essential oil and ultrapure water at a ratio of 4:5 (v / v), and gradually add Tween 80 and absolute ethanol at a ratio of 1:3 (v / v) at 50°C. v) Surfactants mixed in the same ratio and stirred until clear and transparent, it is an essential oil microemulsion.

[0041] (2) Preparation of microcapsules: Spray a uniform mixture of cornstarch and β-cyclodextrin in a ratio of 60:3 (w / w) with 100% absolute ethanol, and obtain 60-mesh particles after drying. Mix evenly with the essential oil microemulsion prepared in step (1) at a ratio of 1:3 (w / w) to obtain essential oil microcapsules.

[0042] (3) Preparation of concentrated active packaging stickers: uniformly mix the essential oil microcapsules prepared in step (2) with the adhesive at a ratio of 1:1 (w / w) to obtain a coating solution containing essential oils, which is passed through a continuous coating machine Coated on the self-adhesive base material and compounded with PET t...

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Abstract

The invention discloses a preparation method and application of a concentrated active packaging patch. According to the concentrated active packaging patch, plant essential oil is subjected to emulsification, embedding and composite packaging through a three-step method so as to slow down release of the plant essential oil, namely, oil-in-water microemulsion-essential oil microcapsule-composite active packaging. The concentrated active packaging patch is composed of five layers from top to bottom, namely, a PET covering material layer, an active component coating layer, a moisture-storage breathable layer, a coating bottom layer and an adhesive layer. The concentrated active packaging patch is long in slow release time, and can achieve the effects of low dosage and long time efficiency; the advantages of being green, safe, low in cost and the like are achieved; and the preparation process is simple and easy for large-scale production. The concentrated active packaging patch is suitable for the fields of storage, preservation and logistics transportation of agricultural products such as fruits, vegetables or grains, and has the effects of bacteriostasis, desinsectization and the like.

Description

technical field [0001] The invention relates to a preparation method and application of concentrated active packaging stickers. It is used in the storage and preservation of agricultural products such as fruits and vegetables or grain, and in the field of logistics and transportation. Background technique [0002] my country's agricultural product storage, transportation and processing industry has entered a period of rapid development. Different types of agricultural products, such as vegetables and grains, will have different risks in the storage and transportation links due to the differences in biological attributes, production characteristics, and processing methods of agricultural products. Fruit vegetables and grains will be harmed by microorganisms such as molds and storage pests, which will lead to problems such as quality deterioration and corruption, and lose their edible value. At present, in order to solve the problems in the storage and transportation of agric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09D5/14
CPCC09J7/29C09D5/14Y02W90/10
Inventor 阎瑞香石伟伟刘光发
Owner TIANJIN UNIV OF SCI & TECH
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