Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Covering materials for agriculture

A covering and agricultural technology, applied in agriculture, agricultural machinery, agricultural machinery and machinery, etc., can solve the problems of excessive rainwater immersion, light weight, poor transparency, and non-woven fabric breakage, and achieve high light transmittance, The effect of protecting crops and excellent heat preservation

Active Publication Date: 2016-01-20
MITSUI CHEM INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, agricultural covering materials made of nonwoven fabrics made of thick fibers have high air permeability, so the ground temperature that has been warmed up after a long time will radiate heat during bad weather and at night, and the growth promotion effect of heat preservation will be weakened. or rainwater intrusion so much that it may cause flooding inside
In addition, non-woven fabrics made of thick fibers tend to locally produce parts with poor uniformity of the non-woven fabric, and there are problems such as breakage of the non-woven fabric and invasion of pests.
In order to improve these problems, when nonwoven fabrics made of fine fibers are used, although the thermal insulation effect can be obtained, the diffuse reflection effect of light becomes high due to the thin fibers, and the light transmittance is impaired. Therefore, the balance of the above performance Possibly worse, can't choose
[0007] In addition, Patent Document 2 (Japanese Utility Model Registration No. 2501455) proposes an agricultural nonwoven sheet (sheet), which uses a multi-sheet weight of 15 to 30 g / m 2 synthetic fibrous nonwoven fabrics are overlapped and partially integrated, but as described in the examples, in the case of laminating nonwoven fabrics made of fibers with a thickness of 8 denier (about 35 μm), heat preservation Excellent performance, on the contrary, light weight and transparency may be poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Covering materials for agriculture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Using a propylene homopolymer (PP-1) with an MFR of 20g / 10min, melt spinning at 230°C, the resulting fibers were deposited on the collection surface, and the fibers were obtained with a diameter of 40μm and a mesh weight of 9g / m 2 The spunbonded nonwoven layer (B-1).

[0087] Then, the propylene homopolymer (PP-2) with an MFR of 400 g / 10 minutes was melted at 280°C with an extruder, and the resulting melt was discharged from the spinneret while blowing 280°C The melt-blown method of heating air, depositing fibers with a fiber diameter of 3 μm on the above-mentioned spunbonded nonwoven fabric (B-1) to form a basis weight of 0.5 g / m 2 The melt-blown nonwoven fabric (A-1) was laminated on it with the same spunbonded nonwoven fabric (B-2) as the above-mentioned spunbonded nonwoven fabric (B-1), with a marking area ratio of 18 % hot embossed rolls to integrate the three layers to obtain an agricultural covering material in which a spunbond nonwoven fabric (hereinafter refer...

Embodiment 2）

[0090] Except that the agricultural covering material used in Example 1 was replaced by spunbonded nonwoven fabrics and meltblown nonwoven fabrics having the fiber diameters and mesh weights described in Table 1, the agricultural covering materials were obtained in the same manner as in Example 1. material.

[0091] The obtained covering material for agriculture was evaluated by the method described above. The results are shown in Table 1.

[0092] (Reference example 1, 2)

[0093] Except that the agricultural covering material used in Example 1 was replaced by spunbonded nonwoven fabrics and meltblown nonwoven fabrics having the fiber diameters and mesh weights described in Table 1, the agricultural covering materials were obtained in the same manner as in Example 1. material.

[0094] The obtained covering material for agriculture was evaluated by the method described above. The results are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
gas permeabilityaaaaaaaaaa
Login to View More

Abstract

The object of the present invention is to provide an agricultural covering material that can promote the growth and development of crops and maintain the visibility of the grower to the inside by maintaining a high light transmittance, and at the same time, the growth caused by the heat preservation of the ground temperature The growth-promoting effect is good, excessive intrusion of rainwater can be suppressed, there is no unevenness in strength, and the uniformity such as good prevention of insects from flying is excellent, and it also has appropriate air permeability. The covering material for agriculture includes a nonwoven fabric laminate having (i) a light transmittance of 80% or more and (ii) an air permeability in the range of 50 to 400 cm3 / cm2 / sec , and (iii) the unit weight is in the range of 10-30g / m2.

Description

technical field [0001] The present invention relates to an agricultural covering material composed of a nonwoven fabric laminate, in particular to a nonwoven fabric laminate suitable for open-air cultivation, shed cultivation, greenhouse cultivation, and direct covering (full covering) applications. agricultural covering materials. Background technique [0002] Agricultural covering materials are widely used to protect crops against changes in the external environment and to help their growth and development. Covering materials for agriculture can be broadly classified into films and non-woven fabrics, and are used according to their characteristics. [0003] The film has no air permeability or low air permeability, but has high barrier and high transparency (or high light-shielding), for example, it is used for heat preservation in severe winter (greenhouse cultivation), to prevent fruit from being soaked by rain, to suppress weed growth, to prevent Uses such as flying pe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/02A01G9/14D04H1/544D04H3/16
CPCA01G9/1438B32B5/26D04H1/4374B32B5/022B32B2250/03B32B2250/20B32B2262/0253B32B2410/00D04H1/4291B32B2307/412B32B2307/724D04H1/559D04H1/56D04H3/16Y10T428/24942Y02A40/25A01G13/0268B32B27/32
Inventor 市川太郎津田武
Owner MITSUI CHEM INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com