WO2024257904A1 - Agricultural hose - Google Patents

Abstract

The present invention provides an agricultural hose having excellent durability to prevent bursting and having excellent cold resistance to be usable for agriculture outdoors in cold weather.

Description

Agricultural hose

The present invention relates to a cold-resistant hose used to transport high-pressure gas or fluid to a predetermined location, and more specifically, to an agricultural hose having excellent durability to prevent hose bursting while providing excellent cold resistance so that the hose can be used as an agricultural hose outdoors in extreme cold weather.

In general, a hose is a pipe used to transport fluids such as water, gas, or flowable soil, and can be manufactured from a material with excellent flexibility so that it can bend freely.

Among these hoses, there was a problem with high-pressure hoses where vibrations were transmitted from the pump, causing the outer covering of the hose to peel off, and there was a problem with the hose's lifespan being shortened due to elongation of the hose when used.

In order to solve these problems, some structures have been disclosed in which the outer surface of the hose is knitted with cloth tape or wire. However, the above structures are not only inefficient, but also difficult to apply to high-pressure hoses rather than low-pressure hoses due to cost and structural problems, and even these were only applied to tubes rather than hoses.

Meanwhile, for hoses used for agricultural purposes, most work is done outdoors without any covering, and they are frequently used to supply water even in the cold winter, so it is necessary to prevent damage from UV rays from sunlight and to prevent the hose from freezing even at low temperatures.

The main purpose of the present invention is to provide an agricultural hose which can prevent bursting of a high-pressure hose by increasing durability, minimize damage caused by UV rays from sunlight, and have excellent cold resistance.

According to one aspect of the present invention, there is provided a tubular inner shell; a first yarn continuously wound in a spiral shape at an angle of 105 to 110° on an outer surface of the inner shell, and a second yarn continuously wound in a direction intersecting the first yarn and overlapping the first yarn, the fabric interwoven layer being formed in a mesh shape on the outer surface of the inner shell; and a tubular outer shell formed to cover the fabric interwoven layer on the outer surface of the inner shell. The inner shell comprises a resin and, with respect to 100 parts by weight of the resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, 17.993 to 21.991 parts by weight of a filler, 0.537 to 0.657 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.711 to 0.869 parts by weight of a pigment, and the outer shell comprises a resin and, with respect to 100 parts by weight of the resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, and 0.348 to 0.426 parts by weight of a pigment. An agricultural hose is provided, comprising an antioxidant, 0.348 to 0.426 part by weight of a UV stabilizer, and 0.045 to 0.055 part by weight of a pigment.

According to another feature of the present invention, the first and second yarns of the fabric interwoven layer can be polyester reinforcing yarns.

According to another feature of the present invention, the fabric woven layer can be formed by weaving or knitting the first and second yarns in an over and under pattern.

According to the above embodiments of the present invention, the vibration transmitted from the pump can be reduced, excellent durability can be achieved to prevent hose bursting and improve the service life, damage caused by UV rays of sunlight can be minimized, and excellent cold resistance can be achieved to prevent freezing even at low temperatures, so that it can be easily used outdoors in the cold winter.

Accordingly, the agricultural hose of one embodiment is suitable for use as an agricultural hose where most work is done outdoors without any covering and is frequently used to supply water even in cold winter.

FIG. 1 is a perspective view showing a hose according to one embodiment of the present invention.

Figure 2 is a cross-sectional view of Figure 1.

Figure 3 is an actual photograph of a hose according to one embodiment of the present invention.

Figure 4 is a property table showing the pressure length change rate and the pressure outer diameter change rate for a hose of one embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the attached drawings.

FIG. 1 is an exploded perspective view of a mobile fire suppression device according to an embodiment of the present invention, and FIG. 2 illustrates a preferred embodiment of the present invention with reference to the accompanying drawings below. However, the embodiment of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiment described below.

The embodiments of the present invention are provided to more completely explain the present invention to those with average knowledge in the relevant technical field. Therefore, the shape and size of elements in the drawings may be exaggerated for clearer explanation, and elements indicated by the same symbols in the drawings are the same elements. In addition, parts having similar functions and actions are indicated by the same symbols throughout the drawings.

Additionally, references throughout the specification to an element "including" means that other elements may be included, rather than excluding other elements, unless otherwise specifically stated.

FIG. 1 is a perspective view showing a hose according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is an actual photograph of a hose according to an embodiment of the present invention.

Referring to FIGS. 1 to 3, a hose (100) according to one embodiment of the present invention includes an inner layer (10), a fabric interwoven layer (20), and an outer layer (20).

The endothelium (10) is formed in a tube shape and may be made of a material including rubber or resin to ensure flexibility.

Preferably, the inner skin (10) of one embodiment may include a resin and, with respect to 100 parts by weight of the resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, 17.993 to 21.991 parts by weight of a filler, 0.537 to 0.657 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.711 to 0.869 parts by weight of a pigment.

More preferably, the inner skin (10) of one embodiment contains 25.96 parts by weight of a first plasticizer, 7.68 parts by weight of a second plasticizer, 3.11 parts by weight of a stabilizer, 10.38 parts by weight of a filler, 0.31 parts by weight of an antioxidant, 0.2 parts by weight of a UV stabilizer, and 0.41 parts by weight of a pigment, relative to 51.92 parts by weight of a resin.

The above resin (LS130) is a homopolymer manufactured by suspension polymerization and has properties such as an apparent specific gravity of 0.49 g/cm3, a degree of polymerization of 1250, a volatile matter of 0.1%, an average particle diameter of 135 μm, a particle size distribution (#45) of 0%, a particle size distribution (#200) of 1.8%, a plasticizer absorption amount of 29%, a thermal stability of 72 minutes (min), and a resin whiteness of 96 WI. In particular, it can have improved soft compoundability because it has a high plasticizer absorption amount and a fast absorption speed.

In addition, the resin (LS130) is made of PVC particles that are uniformly spherical in shape, and the size of the PVC particles is adjusted to be suitable for soft processing using a plasticizer. In addition, the resin (LS130) has a vivid color, excellent transparency, and excellent color expression performance when colored.

The above plasticizer acts to prevent the polymers from sticking strongly to each other by entering between polymers. Since a void space is created at this time, it is easy to make a considerably soft plastic, thereby improving processability and providing flexibility to the hose. The first plasticizer may optionally be a dioctyl adipate or trioctyl trimellitate plasticizer, and the second plasticizer may be dioctyl adipate.

The above stabilizer may be a substance including zinc stearate, magnesium aluminum hydroxy carbonate and calcium stearate, and may play a role in preventing PVC from being decomposed by heat and oxidation, etc.

The above filler may be CaCO ₃ and may play a role in increasing the density of the inner skin and improving the physical properties.

The above antioxidant may be tetrakis(methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid))methane, and it plays a role in increasing stability and extending the shelf life by inhibiting oxidation reaction that causes deterioration of product quality due to oxidation reaction in the air.

The above UV stabilizer may be 2-Hydroxy-4-(Octyloxy)Benzophenone, which selectively absorbs ultraviolet rays in sunlight and converts them into heat energy or extinguishes free radicals generated by decomposition by ultraviolet rays, thereby preventing plastic from decomposing in advance.

This lining (10) can be formed by applying heat of 160 to 180°C to a material prepared in a mold according to specifications and then extruding it into a tube shape under the pressure of an extruder.

The lining (10) according to one embodiment may have excellent cold resistance and durability by including various types of additives as described above, and particularly including dioctyl adipate as a plasticizer and 2-hydroxy-4-(octyloxy)benzophenone as a UV stabilizer.

The fabric interwoven layer (20) is intended to provide durability capable of withstanding the internal pressure required for the inner lining (10), and effectively prevents the hose (100) from swelling or bursting in one direction by suppressing the inner lining (10) from stretching in the longitudinal direction.

In addition, the fabric interwoven layer (20) includes first yarns (21) and second yarns (22) that are wound in a direction crossing each other on the outer peripheral surface of the inner lining (10), and are formed in a mesh shape on the outer peripheral surface of the inner lining (10).

The first yarn (21) is continuously wound in a spiral shape at an angle of 105 to 110° on the outer surface of the inner skin (10).

The second yarn (22) is wound continuously in a spiral shape on the outer surface of the inner lining (10) so as to overlap with the first yarn (21) in a direction intersecting with the first yarn (21).

In addition, the fabric woven layer (20) can be formed by weaving or knitting the first and second yarns (21, 22) in an over and under pattern. At this time, the first and second yarns (21, 22) can be arranged in the same over and under pattern, or can be arranged in different over and under patterns if necessary, and various configurations are possible.

In addition, the first and second yarns (21, 22) may use, for example, thin filament yarns, preferably polyester reinforcing yarns, and the present invention is not limited to a specific yarn.

Additionally, the first and second yarns (21, 22) may be composed of a compound yarn made by plying two or more basic yarns.

In addition, the first and second yarns (21, 22) may be made of the same thickness or may be made of different thicknesses if necessary, and the present invention is not limited thereto.

The outer shell (30) is formed to cover the fabric interwoven layer (20) on the outer surface of the inner shell (10) and is formed in a tube shape. In addition, the outer shell (30) may be made of a material including rubber or resin to ensure flexibility.

Preferably, the outer shell (30) of one embodiment may include a resin and, with respect to 100 parts by weight of the resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.348 to 0.426 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.045 to 0.055 parts by weight of a pigment.

More preferably, the outer shell (30) of one embodiment comprises 59.43 parts by weight of resin, 29.71 parts by weight of first plasticizer, 8.79 parts by weight of second plasticizer, 1.42 parts by weight of stabilizer, 0.23 parts by weight of antioxidant, 0.23 parts by weight of UV stabilizer, and 0.03 parts by weight of pigment.

The above resin (LS130) can use a homopolymer manufactured by suspension polymerization, the first plasticizer can optionally use dioctyl adipate or trioctyl trimellitate plasticizer, the second plasticizer can use dioctyl adipate, the stabilizer can provide excellent heat resistance as a Ca-Zn based powder stabilizer, the antioxidant can be tetrakis(methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid))methane, and the UV stabilizer can be 2-hydroxy-4-(octyloxy)benzophenone.

The outer shell (30) according to one embodiment may have excellent cold resistance and durability by including various types of additives as described above, and particularly including dioctyl adipate as a plasticizer and 2-hydroxy-4-(octyloxy)benzophenone as a UV stabilizer.

Figure 4 is a property table for an agricultural hose according to one embodiment. In this case, the inner cover contains 15 parts by weight of dioctyl adipate, and the outer cover contains 15 parts by weight of dioctyl adipate and 300 g of UV stabilizer. In addition, the inner diameter of the hose is 8.5 mm, the outer diameter is 14.5 mm, and the hood is 3.2 mm.

As can be seen in FIG. 4, the hose of one embodiment exhibited a pressure length change rate of -2.46% at 80 bar and -1.48% when the pressure was increased to 150 bar, and a pressure outer diameter change rate of 12.06% at 80 bar and 14.48% when the pressure was increased to 150 bar, indicating that the hose has excellent durability.

Accordingly, the agricultural hose (100) configured in this manner has excellent cold resistance, durability, and UV blocking performance, so it is less damaged even when used outdoors, and does not freeze easily even at low temperatures, so it can be used appropriately outdoors even on cold days. Therefore, it is very suitable for use as an agricultural hose.

The present invention is not limited to the above-described embodiments and the attached drawings, but is intended to be limited by the appended claims. Accordingly, various forms of substitution, modification, and change may be made by those skilled in the art within the scope that does not depart from the technical idea of the present invention described in the claims, and this will also be considered to fall within the scope of the present invention.

Claims (7)

tubular endothelium; A fabric interwoven layer formed in a mesh shape on the outer surface of the inner skin, comprising a first yarn that is continuously wound in a spiral shape at an angle of 105 to 110° on the outer surface of the inner skin, and a second yarn that is continuously wound in a direction intersecting the first yarn and overlapping the first yarn; and A tube-shaped outer shell formed to cover the fabric interwoven layer on the outer peripheral surface of the inner shell; The above-mentioned inner skin comprises a resin and, with respect to 100 parts by weight of the resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, 17.993 to 21.991 parts by weight of a filler, 0.537 to 0.657 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.711 to 0.869 parts by weight of a pigment, An agricultural hose, wherein the outer shell comprises a resin and, based on 100 parts by weight of the resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.348 to 0.426 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.045 to 0.055 parts by weight of a pigment. In the first paragraph, An agricultural hose characterized in that the inner lining contains 25.96 parts by weight of a first plasticizer, 7.68 parts by weight of a second plasticizer, 3.11 parts by weight of a stabilizer, 10.38 parts by weight of a filler, 0.31 parts by weight of an antioxidant, 0.2 parts by weight of a UV stabilizer, and 0.41 parts by weight of a pigment, with the remaining content being the remainder. In the first paragraph, An agricultural hose characterized in that the outer shell comprises 29.71 parts by weight of a first plasticizer, 8.79 parts by weight of a second plasticizer, 1.42 parts by weight of a stabilizer, 0.23 parts by weight of an antioxidant, 0.23 parts by weight of a UV stabilizer, and 0.03 parts by weight of a pigment, with the remaining content being the remainder. In the first paragraph, An agricultural hose characterized in that the inner lining has excellent cold resistance and durability, and includes a plasticizer, dioctyl adipate, and a UV stabilizer, 2-hydroxy-4-(octyloxy)benzophenone, together with a plurality of additives. In the first paragraph, The above outer shell, The resin (LS130) can use a homopolymer manufactured by suspension polymerization. The above first plasticizer may optionally be dioctyl adipate or trioctyl trimellitate plasticizer. The second plasticizer uses dioctyl adipate. The above stabilizer is a Ca-Zn type powder stabilizer that can provide excellent heat resistance. The above antioxidant may be tetrakis(methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid))methane, The above UV stabilizer may be 2-Hydroxy-4-(Octyloxy)Benzophenone, An agricultural hose characterized by excellent cold resistance and durability, containing dioctyl adipate as a plasticizer and 2-hydroxy-4-(octyloxy)benzophenone as a UV stabilizer. In the first paragraph, An agricultural hose, characterized in that the first and second yarns of the fabric interwoven layer are polyester reinforcing yarns. In the first paragraph, An agricultural hose, characterized in that the above fabric interwoven layer is formed by weaving or braiding the first and second yarns in an over and under pattern.

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