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Transparent starch-packaging material and production method thereof

A technology of transparent packaging and production methods, applied in the field of plastic processing, can solve problems such as operational limitations, unrecyclable products, unstable starch plastic processing and application performance, and achieve the effects of cost reduction, low price, and low price

Active Publication Date: 2013-01-09
上海心尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the processing technology of these materials is obtained by stirring in a high-speed mixer and extruding and granulating with parallel twin-screws in the same direction, this starch plastic is still unstable in the processing and application performance of the end product, and the product cannot be recycled.
The prices of thermoplastics such as polylactic acid (PLA), polycaprolactone (PCL), and polybutylene succinate (PBS) are about 25% to 30% higher than traditional plastics. are very limited

Method used

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  • Transparent starch-packaging material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 70 parts of tapioca starch, 25 parts of glycerin, 1.5 parts of distilled water, and 3.5 parts of lubricant; add the tapioca starch, glycerin and distilled water of the above ratio into a banbury mixer with a pressurizing device, and banbury to the material temperature When the temperature reaches 95°C, the water in the tapioca starch begins to evaporate outward, and the tapioca starch continues to be mixed in the internal mixer to make the tapioca starch melt. Become a translucent tapioca starch melt; send the translucent tapioca starch melt into a single-screw extruder with a compression ratio of 3.2 and a screw length-to-diameter ratio of 1:20 for grinding, cutting, and air-cooled packaging. Plastic and soft starch transparent packaging material.

Embodiment 2

[0024] Take 85 parts of tapioca starch, 8 parts of glycerin, 2 parts of distilled water, and 5 parts of lubricant; add the above-mentioned tapioca starch, glycerin and distilled water to the internal mixer with pressurization device, and banbury to the material temperature When the temperature reaches 95°C, the water in the tapioca starch begins to evaporate outward, and the tapioca starch continues to be mixed in the internal mixer to make the tapioca starch melt. Become a translucent tapioca starch melt; send the translucent tapioca starch melt into a single-screw extruder with a compression ratio of 3.2 and a screw length-to-diameter ratio of 1:20 for grinding, cutting, and air-cooled packaging. Plastic and soft starch transparent packaging material.

Embodiment 3

[0026] Take 90 parts of tapioca starch, 6 parts of glycerin, 1 part of distilled water, and 3 parts of lubricant; add the above-mentioned ratio of tapioca starch, glycerin and distilled water to an internal mixer with a pressurizing device, and banbury to the material temperature When the temperature reaches 95°C, the water in the tapioca starch begins to evaporate outward, and the tapioca starch continues to be mixed in the internal mixer to make the tapioca starch melt. Become a translucent tapioca starch melt; send the translucent tapioca starch melt into a single-screw extruder with a compression ratio of 3.2 and a screw length-to-diameter ratio of 1:20 for grinding, cutting, and air-cooled packaging. Plastic and soft starch transparent packaging material.

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Abstract

The invention relates to the field of plastic processing, in particular to a packaging material and a production method thereof. The transparent starch-packaging material is prepared from the following raw materials by weight parts: 70-90 parts of cassava starch, 5-20 parts of glycerol, 1-3 parts of distilled water and 3-5 parts of lubricants. The production method of the transparent starch-packaging material comprises the following steps of: (1) adding the cassava starch, the glycerol and the distilled water to an internal mixer with a pressure device; carrying out banburying until the temperature of the materials reaches 95-135 DEG C, continuously carrying out banburying until molten mass occurs in the cassava starch, adding the lubricants to further carry out banburying for 10 min until the cassava starch fully turns into semitransparent cassava starch molten mass; and (2) conveying the semitransparent cassava starch molten mass into a single-screw extruder to grind, thermally cut,cool and package. The invention has the advantages of low cost, circulating use, strong degradation capability, and the like.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a packaging material and a production method thereof. Background technique [0002] In the 21st century, where the industrialization process is accelerating, oil resources are becoming more and more tense. Building a conservation-oriented society and taking the road of sustainable development have become the focus of global attention and the goal of healthy economic development pursued by countries all over the world. In order to adapt to the requirements of the new era, we must deal with the serious challenges of environmental and resource issues and the financial crisis. The development of plastic packaging materials has begun to change to the direction of low energy consumption, green environmental protection and recyclable utilization. Plant starch plastic is a new green and environmentally friendly renewable resource material in plastic packaging materials. Plant starch pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L3/02C08K5/053C08K5/103
Inventor 王亚楠吕王星王梓刚闫万琪
Owner 上海心尔新材料科技股份有限公司