Antibacterial and puncture-resistant biodegradable packaging bag and preparation method thereof

A biodegradable packaging bag technology, applied in the field of biodegradable packaging materials, can solve the problem of antibacterial durability and puncture resistance of packaging bags, low weighing capacity of degradable plastic bags, and inability to meet the load-bearing requirements of various things, etc. problems, to achieve the effect of improving mechanical properties and puncture resistance, improving interfacial compatibility, and improving mechanical properties

Active Publication Date: 2022-04-12
杭州之西科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the existing biodegradable packaging bags are aimed at improving the biodegradation rate, mechanical properties, and antibacterial properties of the packaging bags, and do not pay attention to the antibacterial durability and puncture resistance of the packaging bags. It is often punctured by hard objects with certain edges and corners, resulting in low weighing capacity of degradable plastic bags, which cannot meet the requirements of bearing multiple things and repeated use. The biodegradable packaging bags provided in the prior art cannot meet the requirements at the same time Degradability, antibacterial durability, and puncture resistance, etc., the present invention provides a bio-based environmentally friendly packaging material with excellent antibacterial performance, long antibacterial cycle, good mechanical properties, and excellent puncture resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antibacterial and puncture-resistant biodegradable packaging bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] The preparation process of carboxymethyl chitosan-silver complex is as follows: add carboxymethyl chitosan to deionized water, ultrasonically disperse evenly, and then add AgNO with a mass concentration of 8g / L 3 Solution, stirred at constant temperature to make it fully fused and reacted, slowly drip sodium hydroxide solution into the mixed solution, adjust the pH to alkaline, after a period of reaction, the solution turned golden brown, and the reaction mixed solution was dialyzed to remove unreduced silver ions , the carboxymethyl chitosan-silver complex was obtained by vacuum freeze-drying, wherein the loading of nano-silver was about 12% of the total weight of the complex.

[0052] All other experimental raw materials were obtained through conventional commercial purchases.

[0053] 2. Performance test

[0054] (1) Mechanical performance test: test according to the method of GB / T1040.1-2006.

[0055] (2) Degradation performance test: the soil burial method is use...

Embodiment 1

[0059] An antibacterial and puncture-resistant biodegradable packaging bag, the packaging bag is made of the following raw materials in parts by weight: 60 parts of PLA, 30 parts of PBAT, 15 parts of modified corn starch, 3 parts of hydroxy-terminated lactic acid oligomers, containing ring 2 parts of vinyl polymer of oxygen group, 0.6 part of 2,2'-(1,3-phenylene)-bisoxazoline, 0.6 part of diphenylmethane diisocyanate, carbon nanotube-carboxymethyl chitosan 12 parts of sugar-silver complex;

[0060] The preparation method of above-mentioned PLA / PBAT biodegradable packaging bag, comprises the following steps:

[0061] (1) modifying cornstarch to prepare modified starch for subsequent use;

[0062] (2) vacuum-dry PLA, PBAT and modified cornstarch at 60°C for 2 hours;

[0063] (3) Add the dry raw materials in step (2) into a high-speed mixer, and then add hydroxy-terminated lactic acid oligomers, vinyl polymers containing epoxy groups, 2,2'-(1,3-phenylene) - bisoxazoline, dipheny...

Embodiment 2

[0066] An antibacterial and puncture-resistant biodegradable packaging bag, the packaging bag is made of the following raw materials in parts by weight: 90 parts of PLA, 40 parts of PBAT, 20 parts of modified corn starch, 4 parts of hydroxy-terminated lactic acid oligomers, containing ring 2 parts of vinyl polymer of oxygen group, 0.8 part of 2,2'-(1,3-phenylene)-bisoxazoline, 0.4 part of diphenylmethane diisocyanate, carbon nanotube-carboxymethyl chitosan Sugar-silver complex 15 parts.

[0067] The specific preparation steps are the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
epoxy valueaaaaaaaaaa
grafting amountaaaaaaaaaa
Login to view more

Abstract

The invention provides an antibacterial and puncture-resistant biodegradable packaging bag and a preparation method thereof. The packaging bag comprises the following components by weight fraction: 50-90 parts of PLA, 20-40 parts of PBAT, and 10-20 parts of starch. 5-10 parts of compatibilizer, 0.5-2 parts of chain extender, 8-15 parts of antibacterial agent; the preparation method is: preparation of modified starch-raw material pretreatment-raw material mixing-extrusion granulation-extrusion blown film preparation Obtain a packaging bag; the high puncture-resistant biodegradable packaging bag of the present invention uses PLA, PBAT, and modified starch as raw materials, and adds specific types of compatibilizers and antibacterial agents to improve the degradation performance of the degradable packaging bag. Green and environmental protection, low cost, excellent antibacterial performance, long antibacterial cycle, good mechanical properties, excellent puncture resistance.

Description

technical field [0001] The invention relates to the technical field of biodegradable packaging materials, in particular to an antibacterial and puncture-resistant biodegradable packaging bag and a preparation method thereof. Background technique [0002] The rapid depletion of petroleum resources, coupled with the ecological threat posed by non-renewable polymer waste under environmental conditions, necessitates the development of bio-based and biodegradable polymers in alternative ways. Polylactic acid (PLA) is an important bio-based degradable plastic. Due to its excellent properties such as easy processing and high mechanical strength, it has great potential in replacing petroleum-based non-degradable plastics. [0003] PLA was first applied in the field of biomedicine. As a biodegradable material with good biocompatibility, PLA has received widespread attention because its degradation products are non-toxic and non-irritating, very safe to humans or organisms, and have e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08L3/04C08L63/10C08L5/08C08K9/12C08K3/08C08K9/04C08K3/04C08K5/29C08K5/353C08J5/18
CPCC08J5/18C08J2367/04C08J2467/02C08J2467/04C08J2403/04C08J2463/10C08J2405/08C08K9/12C08K3/08C08K9/04C08K3/041C08K2201/011C08K5/29C08K5/353
Inventor 骆钧飞裘辰豪
Owner 杭州之西科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap