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Environmental protection type base fibre film, and its mfg. process

A manufacturing process and technology of hemp mulch film, applied in the field of hemp mulch film and its manufacturing process, can solve the problems of easy breakage, poor weather resistance, low strength of paper mulch film, etc., and achieve high bonding performance, good compatibility, and elongation. good rate

Active Publication Date: 2007-04-25
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, paper mulch has low strength, poor wind and rain resistance, and is easily broken. It is easy to be torn when laying the film, so it is not suitable for mechanical laying.
In actual use, film laying is difficult, labor-intensive and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1 The environment-friendly hemp mulching film of the present invention is produced according to the following process flow: hemp fiber raw material → unpacking, mixing and loosening → dust removal and impurity removal → primary carding by a carding machine → stripping cotton to form a web → secondary web formation by an air-laid machine → Chemical bonding and consolidation→waterproof treatment→calendering, coiling→detection, storage (the following embodiments are the same).

[0010] The raw material of the hemp fiber is ramie short fiber, the fiber fineness is 3-9 dtex, and the fiber length is 3-12 cm. The hemp fiber raw material is sent to the carding machine for primary carding after being mixed, loosened, dust-removed and impurity removed, and the hemp fiber web is stripped to form a web. The hemp fiber web formed by carding technology is secondarily distributed and the hemp fiber web (the width of the web is 2.0-3.2 meters) is output from the air-laid machin...

Embodiment 2

[0011] Embodiment 2 The hemp fiber raw material adopts short ramie fibers, the fiber fineness is 3-9 dtex, and the fiber length is 3-12 cm. The hemp fiber raw material is sent to the carding machine for primary carding after being mixed, loosened, dust-removed and impurity removed, and the hemp fiber web is stripped to form a web. The hemp fiber web formed by carding technology is secondarily distributed and the hemp fiber web (the width of the web is 2.0-3.2 meters) is output from the air-laid machine and directly falls on the leather curtain conveyor belt, and is sent to the consolidation process. Bonded and consolidated into a film. Adhesive bonding uses polyvinyl acetate emulsion type latex with a concentration of 6% as adhesive, adhesive: water = 1:13, drying temperature is 155° C., and drying time is 1.5 minutes. Then apply organic fluorine polymer water-repellent agent on the surface of the consolidated hemp film to carry out waterproof treatment. The pH value of the o...

Embodiment 3

[0012] Embodiment 3 The hemp fiber raw material adopts short ramie fibers, the fiber fineness is 3-9 dtex, and the fiber length is 3-12 cm. The hemp fiber raw material is sent to the carding machine for primary carding after being mixed, loosened, dust-removed and impurity removed, and the hemp fiber web is stripped to form a web. The hemp fiber web formed by carding technology is secondarily distributed and the hemp fiber web (the width of the web is 2.0-3.2 meters) is output from the air-laid machine and directly falls on the leather curtain conveyor belt, and is sent to the consolidation process. Bonded and consolidated into a film. For bonding and consolidation, polyvinyl acetate emulsion type latex with a concentration of 8% is used as an adhesive, adhesive: water = 1:10, drying temperature is 165° C., and drying time is 2.5 minutes. Then apply organic fluorine polymer water-repellent agent on the surface of the consolidated hemp film for waterproof treatment. The organi...

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Abstract

An environmental protection type bast fibre film which is air permeable and impervious is prepared from bast fibres through opening fibres, removing dust and impurities, carding, stripping for netting, airflow netting, chemical sticking by adhesive to become film, applying the hydrophobic agent onto its surfaces, and cold rolling.

Description

technical field [0001] The invention relates to an agricultural mulching film and a manufacturing process thereof, in particular to a completely degradable, pollution-free, ultra-thin, high-strength hemp mulching film and a manufacturing process thereof. Background technique [0002] As a modern agricultural technology, the application of plastic mulch film plays a great role in increasing crop production, increasing farmers' income, and promoting the development of agricultural production. However, plastic mulch film is not degradable, which brings "white pollution" and soil compaction, and poor permeability. problems such as land decline. For this reason, in the past 20 years, extensive research has been carried out at home and abroad, trying to find an environmentally friendly degradable mulch film that can replace plastic mulch films, and many new mulch film products have been developed, mainly including: starch-added degradable agricultural mulch film, Photodegradable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/02C09K17/52
Inventor 王朝云欧阳清张运雄薛召东唐建文杨剑飞易永健吕江南杨孙枝熊建生刘建明汪洪鹰王莉英屈东鑫田晓斌
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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