Manufacturing method of high-reflectivity mulching film

Abstract

The invention relates to a manufacturing method of a high-reflectivity mulching film. The mulching film is a double-sided mulching film composed of two layers of non-woven fabric, wherein the front surface is reflective white non-woven fabric, the back surface is black non-woven fabric, and each layer of non-woven fabric is manufactured by mixing polypropylene matrix resin, an anti-aging additive, titanium dioxide and pigment master batch, and manufactured through feeding, high-temperature melting, filtering, metering of a metering pump, spinning, cooling, up-down stretching, web curtain conveying and hot rolling; the different layers of non-woven fabric are formed through sequential drawing and polymerizing of different lower stretchers in a conveying direction of a web curtain, and drawing and arranging directions of the different layers of non-woven fabric are arranged on a doffing plane of the web curtain in an intersecting mode; and finally, the obtained different layers of non-woven fabric are laminated and adhered to form the agricultural mulching film. According to the mulching film, the reflective rate of the mulching film is improved, the product is tear-resistant and uniform in thickness, and the usability and the service life of the product is improved. The preparation process is simple, reduced in production cost and suitable for industrial mass production.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to an agricultural mulching film. Background technique [0002] In recent years, with the rapid development of China's agriculture, the use of agricultural mulch has been greatly increased, and the requirements for it are gradually increasing. There are many types of agricultural mulch on the market. Agricultural mulch has the function of water and fertilizer retention, which can effectively Control the temperature and humidity of the soil to create a soil environment that is conducive to plant growth. Because of its microporous structure, it can breathe and seep water, which is conducive to the respiration of microorganisms in the soil, thereby producing more beneficial bacteria and nutrients in the soil. It will also increase, but because some fruits are located in the backlit area or under the canopy, they do not receive sufficient sunlight, which leads to uneven ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of China's agriculture, the use of agricultural mulch has been greatly increased, and the requirements for it are gradually increasing. There are many types of agricultural mulch on the market. Agricultural mulch has the function of water and fertilizer retention, which can effectively Control the temperature and humidity of the soil to create a soil environment that is conducive to plant growth. Because of its microporous structure, it can breathe and seep water, which is conducive to the respiration of microorganisms in the soil, thereby producing more beneficial bacteria and nutrients in the soil. It will also increase, but because some fruits are located in the backlit area or under the canopy, they do not receive sufficient sunlight, which leads to uneven coloring on the surface of the fruit, and the sugar content and nutritional components of the fruit are not high, which seriously affects the fruit. The appearance and taste of the reflective mulch film is to achieve the effect that the sunlight can shine on the reflective mulch film. The reflective mulch film uses its reflective effect to reflect the sunlight to the fruits in different positions, which can ensure that the fruit can carry out sufficient photosynthesis. It affects the development and maturity of fruits, shortens a certain period of maturity, and can also repel pests such as aphids. To a certain extent, it can reduce the use of pesticides and save some labor costs. However, most of the reflective films currently used have a reflective rate of 50%. % or so, the sunlight is still not fully utilized, the quality and taste of the fruit will not be significantly improved, and the above-mentioned effects will not be achieved.

Images