KR20210112663A - High pressure air hose having the phosphorescent line, and its making method - Google Patents

Abstract

The present invention relates to an air hose having a photoluminescent line and a method for manufacturing the same. More particularly, the present invention relates to an air hose having a photoluminescent line containing a photoluminescent pigment on the side of the flexible air hose for supplying air, and a method for manufacturing the same. According to a preferred embodiment of the present invention, an air hose with flexibility comprises: a hose body made of a flexible material, and reinforced in strength by the fibers inside; and a photoluminescent line which is formed to be long along the side of the hose body and emits light even in the dark because it contains a photoluminescent pigment.

Description

High pressure air hose having the phosphorescent line, and its making method

The present invention relates to an air hose having a photoluminescent line and a method for manufacturing the same, and more particularly, to an air hose having a photoluminescent line containing a photoluminescent pigment on the side of the flexible air hose for supplying air, and a method for manufacturing the same will be.

In general, a flexible hose having flexibility so as to be freely bent is roughly divided into a water hose used for a purpose in which water flows therein, and an air hose used for a purpose in which air flows therein. In general, an air hose has stronger rigidity than a water hose.

Flexible hoses are roughly divided into plastic resin-based air hoses and rubber-based air hoses.

The plastic resin air hose uses a thermoplastic resin such as polyamide, polyurethane, and polyvinyl chloride (PVC, polyvinylchloride) as the main material, and the rubber air hose is acrylonitrile butadiene copolymer rubber. (acrylonitrile butadiene rubber, NBR) and styrene butadiene rubber (SBR) are used as main materials. An air hose is a hose having a stronger rigidity than a water hose, in which a reinforcing part in which a fiber yarn (such as a nylon yarn or a high-strength polyester yarn) is braided or woven is formed on the inner surface. In the air hose, a high-rigidity hose that requires stronger rigidity than a water hose is used in order to prevent the outflow of air due to the flow of air inside.

On the other hand, in a shipyard that builds a ship, an air hose is widely laid on the work site in the ship for various operations.

If there is a power outage in the ship due to an emergency situation such as a fire in the shipyard, when a worker performing various tasks in the ship escapes to a bright place, the air laid on the work site in the ship in the dark The situation is that they are escaping to the outside of the ship by grabbing the hoses one by one by hand. In other words, the air hose laid on various work sites in the ship is a guide line that safely guides the workers to the outside of the ship.

Therefore, in the case of a power outage in the ship due to a fire or the like in the shipyard, a method for safely and quickly escaping to the outside of the ship is required for the safety of the workers.

Document 1: Republic of Korea Public Utility Model Publication No. 20-2018-0002335 (published on Aug. 1, 2018)

The present invention has been devised to solve the above problems, and an object of the present invention is to supply each work site in a ship under construction in a shipyard, and guide the worker safely an escape route in the event of a power outage at the work site due to fire, etc. It is to provide an air hose having a photoluminescent line and a manufacturing method thereof.

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

The present invention is to achieve the above object, and according to a preferred embodiment of the present invention, an air hose having flexibility is a hose body made of a flexible material, the strength of which is reinforced by a fiber thread therein; and a phosphorescent line that is formed to be long along the side of the hose body and emits light even in the dark because it contains a phosphorescent pigment.

According to a preferred embodiment, the photoluminescent line is formed by extruding a photoluminescent pigment to the side of the air hose through an extruder during the extrusion process of manufacturing the air hose.

According to a preferred embodiment, the photoluminescent lines are formed in pairs to face each other based on the center line of the air hose.

According to a preferred embodiment of the present invention, the method of manufacturing an air hose,

A first process comprising: putting the primary extrudate raw material into the primary extruder and extruding the primary air hose;

a second step of wrapping a cylindrical woven material having a circular cross section woven using a fiber yarn on the outer surface of the primary air hose; and

A step of heating the primary air hose wrapped with the woven material with hot air, putting a secondary extrudate raw material into a secondary extruder and extruding the secondary extrudate on the outer surface of the primary air hose wrapped with the woven material, the secondary Immediately after extruding the extrudate, extruding the extrudate for forming the photoluminescent line using an extruder for forming the photoluminescent line to form a photoluminescent line on the outer surface of the air hose, and drying the air hose after water cooling. A third process having; including,

The first process, the second process, and the third process are not a series continuous process, it is characterized in that it is made at a time interval.

According to a preferred embodiment, the secondary extruder and the extruder for forming the photoluminescent line are in close contact with each other.

According to a preferred embodiment, the extrusion speed of the second extruder is characterized in that it is at least two times slower than the extrusion speed of the first extruder.

According to another preferred embodiment of the present invention, the method for manufacturing an air hose,

Putting the primary extrudate raw material into the primary extruder and extruding the primary air hose, water cooling the primary air hose, and winding one or more layers of yarn on the outer surface of the primary air hose in a knitting method A primary process having a primary knitting yarn step and a primary hot air heating step;

Putting the secondary extrudate raw material into the secondary extruder and extruding the secondary air hose to the outer surface of the primary air hose wound with the primary knitting yarn, water cooling the air hose, and the secondary air hose A secondary process having a secondary knitting step of winding one or more layers of yarn on the outer surface in a knitting method, and secondary hot air heating;

Putting the tertiary extrudate raw material into the tertiary extruder and extruding it on the outer surface of the secondary air hose; A third process comprising: forming a photoluminescent line on the outer surface of the air hose by molding; and drying the air hose after water-cooling treatment;

The first process, the second process, and the third process are sequentially performed in a series continuous process.

According to a preferred embodiment, in the first knitting yarn step or the second knitting yarn step, two knitting machines are installed on both sides to have different knitting directions from each other, so that an oblique lattice type knitting yarn is formed.

As described above, the air hose of the present invention has a photoluminescent line containing a photoluminescent pigment formed on its outer surface, so it is used in worksites such as shipyards, and when there is a power outage at the worksite due to fire, etc. It has the advantage of being able to act as an emergency escape guide that helps you safely escape to the outside.

1 is a perspective view of an air hose having a luminescent line, according to a preferred embodiment of the present invention;
2 is a schematic diagram of an extrusion process for forming a photoluminescent line, according to a preferred embodiment of the present invention;
Figure 3 is a flow chart showing a method of manufacturing an air hose having a light-emitting line, according to a preferred embodiment of the present invention.
Figure 4 is a flow chart showing a method of manufacturing an air hose having a photoluminescent line, according to another preferred embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view of an air hose having a luminescent line according to a preferred embodiment of the present invention;

The air hose 100 of the present invention has more rigidity than a water hose so that the internal air hose does not leak, compared to a water hose that has water flowing therein and is soft when pressed by hand. As a hose, it maintains a cylindrical shape and has a rigidity that does not easily enter when pressed by hand.

In general, the air hose is a plastic thermoplastic resin such as polyamide, polyurethane, polyvinylchloride (PVC, polyvinylchloride) or acrylonitrile butadiene rubber (NBR), styrene buta A rubber material such as styrene butadiene rubber (SBR) is used as the main material. That is, the plastic thermoplastic resin or rubber material corresponds to the main component constituting the body of the air hose.

In the present invention, the material of the air hose is a plastic thermoplastic resin hose using polyvinyl chloride (PVC, polyvinylchloride) as a main material. It is used by adding a plasticizer to a polyvinyl chloride (PVC) base, where the plasticizer is a mixture of DINP (Diisononyl phthalate) and DOA (dioctyl adipate). And as a stabilizer, a non-toxic stabilizer is used.

In the air hose 100 of the present invention, in order to improve rigidity and durability, a reinforcing part 12 in which fiber yarn (ex, nylon yarn, or high-strength poly yarn) is braided or woven is formed inside the body to form a circular cross section. do. That is, the reinforcing part 12 is a part braided or woven with nylon yarn or high-strength polyester yarn, and is formed for a reinforcing role to make the air hose more rigid and strong.

On the other hand, along the side of the hose body of the present invention, a long luminescent line 14 is formed linearly. The photoluminescent line 14 is formed by extrusion of a photoluminescent pigment mixing tank, and contains a photoluminescent pigment, so that it emits light even in the dark.

'Photoluminescence' refers to the accumulation of light for a while and then the accumulated light energy emits light in a dark, dark state, and is often referred to as 'luminous'. Therefore, 'phosphorescent pigment' refers to a pigment that absorbs and stores light inside, and emits and emits light.

On the other hand, the photoluminescent line 14 is formed linearly and long by extruding the photoluminescent pigment raw material extruder to the side of the air hose during or immediately after the extrusion process during the manufacture of the air hose.

2 is a schematic diagram of an extrusion process for forming a photoluminescent line according to a preferred embodiment of the present invention.

Referring to FIG. 2 , after the first extrusion, the air hose 100 having a reinforcing part braided or woven with fiber yarn on the outer surface is an extruder for forming an outer layer again in order to extrude the extrudate of the outer layer on the outer surface (that is, secondary compressor). In the extruder for forming an outer layer, a secondary extrudate is extruded on the outer surface of the air hose to reinforce the outer layer of the air hose.

As the extruder for forming the phosphorescent line is directly connected to the extruder for forming the outer layer, the phosphorescent pigment mixed resin is air-filled by the extruder for forming the phosphorescent line before the secondary extrudate of the air hose is cooled, that is, immediately after the second extrusion. By extruding on the side of the hose, the photoluminescent line 14 is formed on the side of the air hose.

As described above, since the air hose of the present invention is formed with a photoluminescent line containing a photoluminescent pigment on the outer surface, it emits light even at night and can be identified with the naked eye. This means that the air hose installed at the work site of the shipyard can serve as an emergency exit and escape guide for workers in the dark in case of an emergency such as a power outage.

On the other hand, below will be described in more detail with respect to the manufacturing method of the air hose of the present invention.

3 is a flowchart illustrating a method of manufacturing an air hose having a photoluminescent line according to a preferred embodiment of the present invention.

Referring to FIG. 3 , first, the raw materials are mixed (P10).

The raw material of the air hose of the present invention is a thermoplastic resin composition using polyvinyl chloride (PVC) as a main component. The raw material is a primary extrudate raw material constituting the inner layer of the air hose, a secondary extrudate raw material constituting an outer layer surrounding the inner layer of the air hose, and an extrudate for forming a photoluminescent line for forming a photoluminescent line (that is, a photoluminescent pigment). mixed resin).

The primary extrudate raw material is mixed with 50 to 70 parts by weight of DINP (Diisononyl phthalate) and 5 to 20 parts by weight of DOA (dioctyl adipate) as a plasticizer in 100 parts by weight of PVC, the main ingredient. And, 0.2 to 2 parts by weight of a non-toxic stabilizer and 0.1 to 1 parts by weight of a pigment are included.

The plasticizer is used for strength control as a liquid, and the stabilizer is an additive added for the purpose of preventing chemical and physical changes. As the pigment, a white pigment, titanium dioxide, is used. In order to prevent aggregation between the raw materials, that is, the mixing is made at a high temperature of about 120 to 170° C. to achieve a smooth mixing.

The secondary extrudate raw material also uses polyvinyl chloride (PVC) as the main material in the same way as the primary extrudate raw material. The secondary extrudate raw material is mixed with 50 to 70 parts by weight of DINP (Diisononyl phthalate) and 5 to 20 parts by weight of DOA (dioctyl adipate) as a plasticizer in 100 parts by weight of the PVC main ingredient, and 0.1 to 3 parts by weight of a non-toxic stabilizer and carbon black (or color pigment) 0.1 to 2 parts by weight is used. The secondary extrudate is also blended at a temperature of about 120 to 170 ℃ to achieve a smooth blending.

Next, the blended primary extrudate raw material is put into the primary extruder and extruded to produce a primary (single core) air hose (P20). The primary air hose that has passed through the extruder is immediately cooled through water, that is, water-cooled (P30). After water cooling treatment, dry it for a long time so that the primary air hose has a completely solid state rather than a gel state. Drying time requires about 12 hours or more at room temperature.

Next, the outer surface of the primary air hose is subjected to a weaving process that wraps the woven fabric using a loom and a fiber yarn (P40). The woven fabric wraps the outer surface of the primary air hose, and has a cylindrical structure with a circular cross section. The woven fabric corresponds to the reinforcing part 12 of the air hose, and since the air hose must have hard rigidity, for this purpose, the woven fabric woven with the fiber yarn wraps around the primary air hose.

Next, in order to extrude the secondary extrudate to the outer surface of the primary air hose wrapped around the woven material, first, the woven material is heated by applying hot air to the wrapped primary air hose (P50). The hot air heating is performed by setting the temperature of the hot air blower to a temperature of 300 to 500 °C. This is to perform hot air heating on the primary air hose wrapped in the woven material before the secondary extrusion in order to ensure that the woven material is well adhered to the secondary extrudate when extruding the secondary extrudate to the outside of the woven material.

Secondary extrusion molding is performed after hot air heating (P60). That is, the air hose having a reinforcing part woven with a fiber yarn on the outer surface is again fed into an extruder (secondary extruder) for forming an outer layer, and a secondary extrudate (secondary air hose) is extruded on the outer surface. The extrusion rate of the secondary extruder (extrusion rate of the secondary extruder) is set to be at least twice slower than the extrusion rate of the primary extruder (extrusion rate of the primary extruder). For example, when the compression speed of the primary extruder through the primary extruder is set to 60 cm/min, the extrusion rate of the secondary extrudate through the secondary extruder is 30 cm/min or less, which is more than twice slower, about 15 cm/min to 30 cm Set the speed to /min. This is to ensure that the secondary extrudate is sufficiently adhered to the primary extrudate by slowing the extrusion rate as much as possible because the primary extrudate is in a hardened state during secondary extrusion and the exterior is covered with a woven material. On the other hand, in FIG. 4, since the first, second, and third extrusions are made in a continuous process, the extrudate is not completely solidified during the process, so even if it proceeds at the same extrusion speed, adhesion between the first, second, and third extrudates can be sufficiently achieved. have.

Next, immediately after the secondary extrusion molding, in order to form a photoluminescent line on the outer surface of the air hose, the photoluminescent pigment mixed resin (extruded material for forming the photoluminescent line) is extruded through an extruder for forming a photoluminescent line (P70) .

For the phosphorescent pigment mixed resin for forming the phosphorescent line, 50-60 parts by weight of DINP (Diisononyl phthalate) as a plasticizer, 1-3 parts by weight of a non-toxic stabilizer, and 5-10 parts by weight of a phosphorescent pigment are used in 100 parts by weight of the main PVC.

The extruder for forming the phosphorescent line is directly connected to the extruder for forming the outer layer, so before the secondary extrudate of the air hose is cooled, the phosphorescent pigment mixed resin is extruded on the side of the air hose by the extruder for forming the phosphorescent line, A photoluminescent line is formed on the side of the air hose. Since the extruders for forming the photoluminescent line are formed on both sides of the air hose, the photoluminescent line is formed in pairs on opposite sides of the air hose.

The air hose with the luminescent line formed on the outer surface is immediately cooled with water, that is, water-cooled (P80). After water cooling, it is dried at room temperature for a long time to form a completely solid state.

As a result, the product is completed, and the product is later packaged (P90) and shipped.

In the air hose manufacturing method of FIG. 3, each process is not made continuously in one line, but is made by separate unit processes that are spaced apart in time. That is, the first process of primary extrusion/water cooling drying, the second process of forming and wrapping a woven fabric on the outer surface, and the third process of hot air heating/secondary extrusion/photoluminescence extrusion/water cooling drying are not one series continuous process. , at a time interval from each other.

4 is a flowchart illustrating a method of manufacturing an air hose having a photoluminescent line, according to another preferred embodiment of the present invention.

The manufacturing method of FIG. 3 is a structure in which a woven material woven of fiber yarn is inserted into the inner surface of the air hose, and for this purpose, the secondary extrusion process must be performed again after the primary extrudate is completely cooled, whereas in FIG. The manufacturing method is a manufacturing method performed in a series continuous process, in which the fiber yarn formed on the inner surface of the air hose is inserted in the form of a braid rather than a woven material. An air hose is manufactured through a tertiary extrusion process in which the extrudate is extruded, and the tertiary extrudate and the photoluminescent extrudate are extruded before the secondary extrudate is completely cooled.

The manufacturing method of FIG. 4 is made in a series continuous process, and since the knitted yarn in which the fiber yarn is knitted is formed inside, the hardness is reduced only by the secondary extrusion process as in the manufacturing method of FIG. 3, and the manufacturing method of FIG. It passes through the extruder and goes through the third extrusion process.

Referring to FIG. 4 , first, the raw materials are mixed (S10). The extrudate raw material is divided into a raw material for forming the air hose body and a raw material for forming a photoluminescent line.

The raw material for forming the air hose body is divided into a primary extrudate raw material and a secondary extrudate raw material corresponding to the core, and a tertiary extrudate raw material corresponding to the outer skin layer. The same ingredients are applied to the raw materials, but different raw materials are applied to the tertiary extrudate raw materials. That is, the primary and secondary extrudate raw materials are 50 to 70 parts by weight of DINP (Diisononyl phthalate) as a plasticizer, 5 to 20 parts by weight of DOA (dioctyl adipate), 0.2 to 2 parts by weight of a non-toxic stabilizer, While 0.1 to 1 part by weight of white pigment is included, the tertiary extrudate raw material is 60 to 70 parts by weight of DINP (Diisononyl phthalate) and 5 to 20 parts by weight of DOA (dioctyl adipate) as a plasticizer in 100 parts by weight of the PVC main material, and non-toxic It contains 0.1 to 3 parts by weight of a stabilizer and 0.1 to 2 parts by weight of a color pigment.

The raw material for forming the photoluminescent line may have the same composition as the photoluminescent pigment mixed resin described with reference to FIG. 3 .

A primary air hose is manufactured by primary extrusion molding using the primary extruder and primary extrudate raw material (S20). While the primary air hose that has passed through the primary extruder is immediately cooled in water (water cooling, S30), the continuous process proceeds to the next process, the primary knitting process (S40).

The knitting process is a process of winding a yarn with a knitting yarn using a fiber yarn on the outer surface of the primary air hose that is not yet completely hardened. For the fiber yarn, polyester yarn or nylon yarn is used. Preferably, two knitting machines are installed on both sides to make the knitting yarn directions different from each other so that an oblique grid-type knitting yarn is formed. This is to make the air hose more rigid than knitting in only one direction (unidirectional knitting). By using a grid-type knitting yarn rather than a unidirectional knitting yarn, a harder air hose can be produced. In unidirectional knitting yarn, one layer of yarn is wound, and in grid-type knitting yarn, two layers of yarn are wound.

The primary air hose that has undergone the primary knitting process is first heated with hot air through a dryer as a continuous process. Hot air drying is to strengthen the adhesion with the extrudate in the subsequent extrusion process.

As a result, the primary process is finished, and the secondary process is connected to a continuous process by one line.

Secondary process In addition, extrusion molding of the secondary extrudate on the outer surface of the primary air hose using a secondary extruder, water cooling cooling, knitting yarn, and hot air heating are followed. Water cooling, knitting yarn, and hot air heating are performed as described in the previous primary process.

In the tertiary process, the tertiary extrudate is extruded on the outer surface of the secondary air hose using a tertiary extruder, and a photoluminescent line is formed through an extruder for forming an adjacent photoluminescent line communicating with the tertiary extruder. As shown in Fig. 2, the extruder for forming the photoluminescent line is directly connected to the extruder for forming the outer layer, so before the third extrudate of the air hose is cooled, the photoluminescent pigment mixed resin is transferred to the air hose by the extruder for forming the photoluminescent line. It is extruded to the side of the luminescent line is formed on the side of the air hose as shown in FIG.

The air hose with the photoluminescent line on the side is immediately cooled in water, dried sufficiently, and then packaged and shipped as a product.

Although embodiments of the present invention have been described with reference to the above and the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can practice the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: air hose
10: body
12: reinforcement part
14: phosphorescent line

Claims (8)

In the air hose having flexibility,
A hose body made of a flexible material, reinforced in strength by the fibers inside; and
An air hose having a photoluminescent line, comprising: a photoluminescent line formed to be long along the side of the hose body, and containing a photoluminescent pigment to emit light even in the dark. According to claim 1,
The photoluminescent line is an air hose having a photoluminescent line, characterized in that it is formed by extruding a photoluminescent pigment to the side of the air hose through an extruder during the extrusion process during the manufacture of the air hose. According to claim 1,
The photoluminescent line is an air hose having a photoluminescent line, characterized in that formed in pairs to face each other based on the center line of the air hose. A first process comprising: putting the primary extrudate raw material into the primary extruder and extruding the primary air hose;
a second step of wrapping a cylindrical woven material having a circular cross section woven using a fiber yarn on the outer surface of the primary air hose; and
A step of heating the primary air hose wrapped with the woven material with hot air, putting a secondary extrudate raw material into a secondary extruder and extruding the secondary extrudate on the outer surface of the primary air hose wrapped with the woven material, and the secondary Immediately after extruding the extrudate, extruding the extrudate for forming the photoluminescent line using an extruder for forming the photoluminescent line to form a photoluminescent line on the outer surface of the air hose, and drying the air hose after water cooling. A third process having; including,
The method for manufacturing an air hose having a photoluminescent line, characterized in that the first process, the second process, and the third process are performed at a time interval rather than a series continuous process. 5. The method of claim 4,
The method of manufacturing an air hose having a photoluminescent line, characterized in that the secondary extruder and the extruder for forming the photoluminescent line are in close contact with each other. 5. The method of claim 4,
The extrusion speed of the secondary extruder is a method of manufacturing an air hose having a photoluminescent line, characterized in that at least two times slower than the extrusion speed of the first extruder. Putting the primary extrudate raw material into the primary extruder and extruding the primary air hose, water cooling the primary air hose, and winding one or more layers of yarn on the outer surface of the primary air hose in a knitting method A primary process having a primary knitting yarn step and a primary hot air heating step;
Putting the secondary extrudate raw material into the secondary extruder and extruding the secondary air hose on the outer surface of the primary air hose wound with the primary knitting yarn, water cooling the air hose, and the secondary air hose A secondary process having a secondary knitting step of winding one or more layers of yarn on the outer surface in a knitting method, and secondary hot air heating;
Putting the raw material of the tertiary extrudate into the tertiary extruder and extruding it on the outer surface of the secondary air hose, and immediately after extruding the secondary extrudate, extruding the extrudate for forming the luminescence line using an extruder for forming the luminescence line A third process comprising: forming a photoluminescent line on the outer surface of the air hose by molding; and drying the air hose after water-cooling treatment;
The first process, the second process, and the third process are sequentially performed in a series continuous process. According to claim 1,
In the first knitting yarn step or the second knitting yarn step, two knitting machines are installed on both sides of the air hose to form an oblique grid-type knitted yarn by differentiating the knitting yarn directions from each other.

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