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Calcium plastic starch resin sheets

A technology of starch resin and plasticized starch, which is applied in the field of new calcium-plastic starch sheet, can solve problems such as difficult degradation, and achieve the effects of environmental protection, good natural decomposability, and high burst resistance

Inactive Publication Date: 2012-03-28
绿成包装集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the biggest disadvantage of the traditional calcium-plastic carton is that its plastic content is as high as more than 50%, which is actually difficult to degrade

Method used

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  • Calcium plastic starch resin sheets
  • Calcium plastic starch resin sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 1 , mix starch, glycerin and water in a weight ratio of 1:1:1, and stir in a high-speed mixer at a temperature of 150°C for 0.5 hours to obtain plasticized starch. Add plasticized starch, HDPE resin, and calcium carbonate in a weight ratio of 1:1:2, add 1wt% antioxidant 1010, 1wt% titanate coupling agent, 1wt% stabilizer, 1wt% degradation accelerator, 1wt% photosensitizer additives (the weight percentage of additives is based on the total amount of plasticized starch, polyolefin resin and calcium carbonate), etc., are mixed uniformly in a high-speed mixer, and then extruded with a twin-screw under the process conditions of polyethylene resin. It is extruded out of the machine, calendered, and cooled to make bio-photodegradable calcium plastic lake resin sheets of different thicknesses.

Embodiment 2

[0025] refer to figure 1 , put starch, glycerin and water in a high-speed mixer at a weight ratio of 1:1:1, and stir for 1.5 hours at a temperature of 150°C to obtain plasticized starch; plasticized starch, polypropylene resin, calcium carbonate and Mixed at a weight ratio of 1:1:2.2, adding 1wt% antioxidant, 1wt% titanate coupling agent, 1wt% stabilizer, 1wt% degradation accelerator, 1wt% photosensitizer (the weight percentage of the additive is based on The total amount of plasticized starch, polyolefin resin and calcium carbonate) is uniformly mixed in a high-speed mixer, extruded with a twin-screw extruder under the process conditions of polypropylene resin, and then rolled and cooled to make into calcium plastic lake resin sheets of different thicknesses.

Embodiment 3

[0027] refer to figure 1 , put starch, glycerin and water in a high-speed mixer at a weight ratio of 1:1:3, and stir for 1.0 hour at a temperature of 150°C to obtain plasticized starch; plasticized starch, polypropylene resin, calcium carbonate, and Mixing at a weight ratio of 1:1:2, adding 1wt% antioxidant, 1wt% titanate coupling agent, 0.8wt% stabilizer, 1wt% degradation accelerator, 0.7wt% photosensitizer (the weight percentage of the auxiliary agent (Based on the total amount of plasticized starch, polyolefin resin and calcium carbonate) etc. are uniformly mixed in a high-speed mixer, then extruded with a twin-screw extruder under the technological conditions of polypropylene resin, and then calendered, Cool and make calcium plastic lake resin sheets of different thicknesses.

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Abstract

The invention relates to biodegradable and photodegradable calcium plastic starch resin sheets, which are prepared by the following steps: (1) placing starch, glycerol and water into a high-speed mixer, stirring for 0.5 to 2 hours under a condition that the temperature is 140 to 160 DEG C, and obtaining plastic starch; and (2) placing the plastic starch, polyolefine resin and calcium carbonate, adding a proper amount of aid, uniformly mixing in the high-speed mixer, extruding in a double-screw extruder, and obtaining calcium plastic starch resin sheets with different thicknesses by rolling and cooling. The calcium plastic starch resin sheets prepared by the invention have high bursting strength, high tear strength and high pressure strength, can be subjected to chromaticity printing, have high naturally degradability, are biodegradable and photodegradable, can be recycled and are environment-friendly.

Description

technical field [0001] The invention relates to a biodegradable and photodegradable novel calcium-plastic starch sheet, which belongs to the field of packaging manufacturing. Background technique [0002] At present, most of the paper corrugated cardboard packaging boxes at home and abroad do not have the function of moisture-proof and moisture-proof. If the function of moisture-proof and moisture-proof is to be achieved, it can only be realized by waxing the surface of the packaging box or composite plastic film, or using non-paper calcium-plastic corrugated packaging. box. Ordinary corrugated cartons lose their strength after being exposed to moisture; while wax-coated or re-plastic cartons require many processes, consume a lot of energy, and have an impact on the environment, which is not conducive to low-carbon environmental protection. [0003] Calcium-plastic cartons, also known as calcium-plastic boxes, are made of high-density polyethylene (HDPE) as the main raw mat...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/06C08L23/12C08L3/02C08K13/02C08K5/053C08K3/26
Inventor 张刚刘鹰
Owner 绿成包装集团有限公司
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