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Starch-based fully degraded packaging material and preparation method thereof

A packaging material and a fully degradable technology, applied in the field of starch-based fully degradable packaging materials and their preparation, can solve the problems of unsatisfactory starch-based degradable packaging performance, and achieve the effects of low price, low density and wide sources.

Active Publication Date: 2011-01-12
中山市淀堂环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a starch-based fully degradable packaging material and its preparation method to solve the problem that the existing starch-based degradable packaging performance is not ideal

Method used

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  • Starch-based fully degraded packaging material and preparation method thereof

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preparation example Construction

[0064] The starch composition can also be modified by conventional methods (for example, a one-step method) to obtain the starch-based fully degradable packaging material of the present invention. But after many experiments, the present invention provides a preparation method as follows, mainly through the following steps:

[0065] A. Plasticization modification: ordinary starch undergoes modification reaction to prepare plasticization modified starch.

[0066] Put the plant starch, toughening polymer, compatibilizer, modification auxiliary, softener, and plasticizer into the mixer in sequence according to the formula ratio. At 1~6kg / cm 2 Stir for 15-60 minutes in a high-speed mixer at 3000 rpm under pressure and within a temperature gradient of 85-95°C. The plasticized modified starch component is obtained in a loose state.

[0067] In this step, various polymer modification, toughening, softening, compatibilization, and plasticizers are added to the starch, and reaction condition...

Embodiment 1

[0080] Prepare the raw materials with the following proportions:

[0081] Corn starch: 100 servings

[0082] Wood pulp fiber: 12 parts

[0083] EAA: 7 copies

[0084] Titanate coupling agent: 1 part

[0085] Soy Lecithin: 4 servings

[0086] Dioctyl maleate: 2 parts

[0087] Polyethylene glycol 200 15 parts

[0088] Hydroxypropyl methylcellulose 0.5 parts

[0089] Light calcium carbonate: 4 servings

[0090] Rosin glyceride: 1~3 parts

[0091] Chitosan: 0.3 parts

[0092] 0.1 part of sodium dehydroacetate

[0093] Water: 160 parts

[0094] A: Plasticization modification

[0095] Put the above components corn starch, EAA, titanate coupling agent, dioctyl maleate, soybean lecithin, and polyvinyl alcohol 200 into the mixer in sequence according to the formula ratio. Stir in a high-speed mixer at 3000 rpm for 40 minutes under a pressure of 4 kg / cm2 and a temperature gradient of 85-95°C. The plasticized modified starch component is obtained in a loose state.

[0096] B: Homogeneous mixing:

[0097] Co...

Embodiment 2

[0101] Tapioca starch: 100 servings

[0102] Bamboo pulp fiber: 20 parts

[0103] 10 parts of EVOH

[0104] Silicone coupling agent: 2 parts

[0105] Maleic anhydride: 1.5 parts

[0106] Calcium stearoyl lactate: 10 parts

[0107] Glycerin: 18 parts

[0108] Polyvinylpyrrolidone: 0.2

[0109] Sodium Alginate: 0.8 parts

[0110] Nano calcium carbonate: 6 parts

[0111] Liquid paraffin: 3 parts

[0112] Cinnamaldehyde: 0.1 part

[0113] Sodium benzoate 0.5 part

[0114] Water: 210 parts

[0115] A: Modified ordinary starch to plasticized modified starch

[0116] Put tapioca starch, EVOH, maleic anhydride, silicone coupling agent, and glycerin into the blender in sequence according to the formula ratio. Stir in a high-speed mixer at 3000 rpm for 30 minutes under a pressure of 6 kg / cm2 and a temperature gradient of 80-90°C. The plasticized modified starch component is obtained in a loose state.

[0117] B: Combine the plasticized modified starch component with bamboo pulp fiber, sodium alginate, pol...

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Abstract

The invention discloses a starch-based fully degraded packaging material which is prepared by the following steps: adding a plant fiber and various modified assistants in plant starch, and simply carrying out modifying, crosslinking, homogenizing, mould pressing and foam shaping on the materials. The product has the advantages of mildew resistance, softness, low density, higher strength, wider application and wide-resource and low-price raw material; the waste can be fully and biologically degraded into organic fertilizer in natural environment; the corner surplus material can be recovered and reworked for use, thus effectively lowering the production cost; the production process is simple and convenient; the whole production process does not have waste water, waste gas and dregs; and the production process and the finished product are environmentally friendly.

Description

Technical field [0001] The invention relates to an industrial lining packaging material, in particular to a starch-based fully degradable packaging material and a preparation method thereof. Background technique [0002] With the increasing shortage and shortage of petroleum resources, petrochemical products using petroleum as raw materials have been severely affected. Among petrochemical products, plastic products have the characteristics of being large in quantity and not easily degradable. The usual recycling method in various countries is burying or incineration, which consumes a lot of energy and aggravates the re-pollution of the environment. The tens of thousands of tons of industrial plastic packaging and waste brought by industrial production are particularly serious to the environment. The cleaning and sorting of garbage consumes a lot of financial and energy resources. Direct burial will harden a lot of land and soil. Cause damage to the ecological environment. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L97/02B65D65/46
CPCY02W90/10
Inventor 梁靖
Owner 中山市淀堂环保科技有限公司