Degradable bio-based seedling raising pot, production method thereof, regulation method in degradation period and application of degradable bio-based seedling raising pot

An adjustment method and bio-based technology, applied in the field of bio-based seedling pots and their preparation, can solve the problems of difficulty in maintaining the uprightness of the pot body, slow degradation rate, and easy damage, and achieve the goal of promoting starch gelatinization and other thermochemical reactions, Mobility-promoting effect

Inactive Publication Date: 2016-06-01
CHINESE ACAD OF AGRI MECHANIZATION SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method uses polyacrylamide as a binder, which needs to be diluted with water when used, and the product needs to be dried until the moisture content is lower than 15% after demoulding, and the process is relatively cumbersome.
[0009] In a word, the existing production methods of degradable seedling pots are all insufficient, or wet pressing requires dehydration, high energy consumption, or needs to add a large amount of adhesive to increase the cost of raw materials, or directly press without adding adhesive to shape the effect Not good, or the pre-processing steps are complicated
Moreover, it is difficult for the seedling pots prepared by the prior art to simultaneously maintain uprightness in the process of crop seedling cultivation to facilitate subsequent transplanting and rapidly rot after t

Method used

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  • Degradable bio-based seedling raising pot, production method thereof, regulation method in degradation period and application of degradable bio-based seedling raising pot
  • Degradable bio-based seedling raising pot, production method thereof, regulation method in degradation period and application of degradable bio-based seedling raising pot
  • Degradable bio-based seedling raising pot, production method thereof, regulation method in degradation period and application of degradable bio-based seedling raising pot

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preparation example Construction

[0056] The present invention also provides a manufacturing method (preparation method) of the above-mentioned biodegradable bio-based seedling pot, which includes the following steps: material pretreatment, proportioning and mixing; dry hot pressing molding; cooling, edge removal and packaging. Specifically, the following steps are included:

[0057] 1) Pretreat the raw materials, adjust their moisture content to 8% to 15%, and mix them evenly according to the proportion;

[0058] 2) Set the temperature of the upper mold at 150-230°C, the temperature of the lower mold is 10-30°C lower than the temperature of the upper mold, the pressing pressure is 25-300MPa each time, the holding time is 1.5s-20s each time, and the molding pressing times are 1-4 times , performing dry hot-press molding on the raw material; and

[0059] 3) Cooling, edge removal and packaging of the pressed raw materials.

[0060] Wherein, in the preparation method of the degradable bio-based seedling pot, in...

Embodiment 11

[0069] The degradable bio-based seedling pot is made according to the following ratio and method:

[0070] raw material name

[0071] The rice husk and wheat bran are crushed to 40 mesh, and dried to a moisture content of 10% to 12%; each powder is stirred and mixed evenly according to the raw material formula for subsequent use. The specifications of the seedling bowl are: thickness 0.7mm, inner diameter of the mouth of the bowl Ф70mm, inner diameter of the bottom of the bowl Ф60mm, height 72mm; weigh 20g±0.5g of the stirred powder, put it into the mold cavity, and perform dry hot pressing. Molding process parameters: upper mold temperature 185°C±5°C, lower mold temperature 165°C±5°C; two press moldings; one molding pressure 25MPa, one holding time 5s; deflation 0.5s; secondary molding pressure 300MPa, The holding time for one time is 2s. The results show that the molding reject rate is less than 3%. The result of the fungal erosion test (GB / T19275-2003) of the d...

Embodiment 12

[0073] The degradable bio-based seedling pot is made according to the following ratio and method:

[0074] raw material name

[0075] sodium alginate

[0076] The rice husk and wheat bran are crushed to 40 mesh, and dried to a moisture content of 10% to 12%; each powder is stirred and mixed evenly according to the raw material formula for subsequent use. The specifications of the seedling bowl are: thickness 0.7mm, inner diameter of the mouth of the bowl Ф70mm, inner diameter of the bottom of the bowl Ф60mm, height 72mm; weigh 20g±0.5g of the stirred powder, put it into the mold cavity, and perform dry hot pressing. Molding process parameters: upper mold temperature 165°C±5°C, lower mold temperature 155°C±5°C; two press moldings; one molding pressure 80MPa, one holding time 9s; air release 0.5s; secondary molding pressure 200MPa, The holding time for one time is 3s. The results show that the molding reject rate is less than 3%. The result of the fungal e...

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Abstract

The invention discloses a degradable bio-based seedling raising pot, a production method thereof, a regulation method in a degradation period and an application of the degradable bio-based seedling raising pot. The degradable bio-based seedling raising pot is produced from straw powder, wheat bran and an adhesive through dry-method hot pressing after mixing. The degradable bio-based seedling raising pot can keep certain strength in a seedling raising process and is relatively complete in appearance, after seedlings and the pot are transplanted to a field simultaneously, the pot can crack and disintegrate rapidly, and plant root extension is facilitated.

Description

technical field [0001] The invention relates to the utilization of agricultural and forestry biomass and degradable bio-based materials and a manufacturing method thereof, in particular to a degradable bio-based seedling pot as well as its preparation method and application. Background technique [0002] my country's grain output has exceeded one trillion catties for three consecutive years, the flower production area has reached 147,500 hectares, 810 million potted plants, and 1.8 billion ornamental seedlings. There is a huge demand for seedling pots. At present, most of the seedlings are planted in plastic seedling pots. When the seedlings grow to the point where they need to be transplanted, they must be taken out and then planted in the soil. This process causes damage to the root system of potted plants, which is not conducive to the growth of potted plants. Pots are not actually recyclable. Bio-based materials refer to a new class of materials manufactured by biologic...

Claims

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Application Information

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IPC IPC(8): A01G9/10
Inventor 李树君李道义景全荣王晓燕李进司伟伟吴丽丽徐名汉董世平汪雄伟燕晓辉刘天舒
Owner CHINESE ACAD OF AGRI MECHANIZATION SCI
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