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A kind of natural antibacterial and mildew-resistant PLA refrigerator fresh-keeping liner and its processing technology

A natural, liner technology, applied in other home appliances, lighting and heating equipment, household refrigeration equipment, etc., can solve the problems that affect people's health, the liner is not degradable, easy to mold bacteria, etc., to achieve good antibacterial and mildew resistance Effect, increase interface adhesion, effect of practical operation

Active Publication Date: 2021-07-13
广东巨塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner and its processing technology, which solves the problem that the refrigerator fresh-keeping liner is prone to mold and produces bacteria affecting people's health in the prior art, and at the same time solves the problem of When the refrigerator is scrapped, the liner is not degradable, causing pollution to the environment

Method used

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  • A kind of natural antibacterial and mildew-resistant PLA refrigerator fresh-keeping liner and its processing technology
  • A kind of natural antibacterial and mildew-resistant PLA refrigerator fresh-keeping liner and its processing technology
  • A kind of natural antibacterial and mildew-resistant PLA refrigerator fresh-keeping liner and its processing technology

Examples

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Effect test

Embodiment 1

[0045] A natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner, comprising the following raw materials in parts by weight: 40 parts of polylactic acid, 20 parts of polyethylene glycol, 4 parts of glycerin, 6 parts of active bacteriostatic agent, and 5 parts of natural anti-mold agent , 2 parts of active antioxidants;

[0046] This kind of natural antibacterial and anti-mold PLA refrigerator fresh-keeping liner is processed by the following steps:

[0047] Step S1: Put the polylactic acid in a vacuum drying oven, vacuum-dry it for 4 hours at a vacuum degree of 0.1Mpa and a temperature of 45°C, and then add the dried polylactic acid and polyethylene glycol into the mixer , at a temperature of 120°C, mix the materials for 10 minutes, add them to the twin-screw extruder after mixing, set the feed rate to 100g / min, and add glycerin to the twin-screw extruder from the side feed port at the same time, Extrude and granulate at a temperature of 190°C to prepa...

Embodiment 2

[0057] A natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner, comprising the following raw materials in parts by weight: 50 parts of polylactic acid, 25 parts of polyethylene glycol, 5 parts of glycerin, 8 parts of active bacteriostatic agent, and 7 parts of natural anti-mold agent , 4 parts of active antioxidants;

[0058] This kind of natural antibacterial and anti-mold PLA refrigerator fresh-keeping liner is processed by the following steps:

[0059] Step S1: Place the polylactic acid in a vacuum drying oven, vacuum-dry it for 5 hours at a vacuum degree of 0.1Mpa and a temperature of 50°C, and then add the dried polylactic acid and polyethylene glycol into the mixer , at a temperature of 140°C, mix the materials for 15 minutes, add them to the twin-screw extruder after mixing, set the feed rate to 100g / min, and add glycerin to the twin-screw extruder from the side feeding port at the same time, Extrude and granulate at a temperature of 190°C to ...

Embodiment 3

[0069]A natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner, comprising the following raw materials in parts by weight: 60 parts of polylactic acid, 30 parts of polyethylene glycol, 6 parts of glycerin, 10 parts of active bacteriostatic agent, and 8 parts of natural anti-mold agent , 6 parts of active antioxidants;

[0070] This kind of natural antibacterial and anti-mold PLA refrigerator fresh-keeping liner is processed by the following steps:

[0071] Step S1: Place the polylactic acid in a vacuum drying oven, vacuum-dry it for 6 hours at a vacuum degree of 0.1Mpa and a temperature of 55°C, and then add the dried polylactic acid and polyethylene glycol into the mixer , at a temperature of 160°C, mix the materials for 20 minutes, add them to the twin-screw extruder after mixing, set the feed rate to 100g / min, and add glycerin to the twin-screw extruder from the side feed port at the same time, Extrude and granulate at a temperature of 190°C to pre...

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Abstract

The invention discloses a natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner and its processing technology. The PLA refrigerator fresh-keeping liner comprises the following raw materials in parts by weight: 40-60 parts of polylactic acid, 20-30 parts of polyethylene glycol , 4-6 parts of glycerin, 6-10 parts of active antibacterial agent, 5-8 parts of natural antifungal agent, 2-6 parts of active antioxidant; processed by the following steps: step S1, preparing modified polylactic acid raw material, Step S2, preparation of mixing materials, step S3, preparation of antibacterial and anti-mildew polylactic acid sheets by hot pressing, step S4, vacuum forming semi-finished liner, step S5, trimming and trimming of semi-finished products to obtain natural anti-bacterial and anti-mildew type The finished PLA refrigerator fresh-keeping liner; the invention solves the problem in the prior art that the refrigerator fresh-keeping liner is prone to mildew and produces bacteria that affects people's health, and at the same time solves the problem that the inner liner is not degradable and pollutes the environment when the refrigerator is scrapped. .

Description

technical field [0001] The invention belongs to the technical field of refrigerator liner processing, and in particular relates to a natural antibacterial and anti-mildew type PLA refrigerator fresh-keeping liner and its processing technology. Background technique [0002] The refrigerator can be said to be the most frequently used home appliance in our daily life. It can ensure the freshness of food for us, and in the hot summer, it is even more essential to store some ice cream in it. Generally, when people buy a refrigerator, they tend to pay attention to the brand, power consumption and appearance. Although these indicators are very important, the material of the refrigerator liner that is in direct contact with food cannot be ignored. The liner of the refrigerator is in direct contact with food, and the quality of its material plays a decisive role in food safety. [0003] The inner tank of the refrigerator is the inner wall of the refrigerator box. It requires good ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C51/10B29C51/18B29C51/42B29C51/26B29C51/36B29B9/06B29B13/06B29B13/00B29C43/58F25D23/00C08L67/04C08L71/02C08K5/00C08K5/053
CPCB29B9/06B29B13/00B29B13/065B29C43/58B29C51/10B29C51/18B29C51/26B29C51/262B29C51/36B29C51/42B29C2043/5816B29L2031/7622C08L67/04F25D23/00C08L71/02C08K5/00C08K5/053C08K5/0058
Inventor 梁世丰李明成
Owner 广东巨塑科技有限公司
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