JP2016107891A - Fender and method for manufacturing fender - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fender which can be installed at a wide range of a place, and can be easily transported and stored, and a method for manufacturing the fender.SOLUTION: A fender 100 comprises a fender body 110 in an outer package bag body 101. The outer package bag body 101 is obtained by forming a polyvinyl chloride sheet material into a bag-like shape, accommodates a liquid urethane resin raw material to thereby form a fender body 102, and covers and protects the fender body 102 composed of a cured semi-hard urethane foam. An inlet for injecting the liquid urethane raw material into the outer package bag body 101 and an exhaust port 104 for exhausting air in the outer package bag body 101 are each formed in a bag end part 101a of the outer package bag body 101. By injection of the liquid urethane raw material into the outer package bag body 101, the fender body 110 is formed into a rod-like shape which extends along an inner side shape of the outer package bag body 101.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fender that is attached to a berth or a quay to protect a hull, and a method for manufacturing the fender.

  Conventionally, there are fenders that protect the hull of a moored ship and prevent damage. For example, in Patent Document 1 below, the outer peripheral surface of a urethane foam cylinder is covered with a soft vinyl chloride outer covering material, and the inner periphery of the cylinder is covered with a hard vinyl chloride inner covering material. A cylindrical fender that is covered and fitted to a mooring pile is disclosed.

Utility Model Registration No. 3125763

  However, in the fender described in Patent Document 1, the installation location is limited to mooring piles, and there is a problem that it cannot be installed and used on a hull or quay. Moreover, since the said conventional fenders are generally manufactured as a finished product using a dedicated production facility in a factory, there is also a problem that the fenders are complicated to transport and store.

  The present invention has been made to cope with the above-described problems, and an object of the present invention is to provide a fender that can be installed in a wide range of locations, and that can be easily transported and stored, and a method for manufacturing the fender. .

  In order to achieve the above object, the present invention is characterized by an inlet for injecting a liquid urethane resin raw material into a bag body made of a vinyl chloride resin sheet material and the liquid urethane resin raw material. An exterior bag body that has an exhaust port for exhausting air from the bag body during injection, and a soft or semi-rigid urethane foam that is solidified by filling the outer bag body with a liquid urethane resin material via the injection port A fender body comprising a body is provided. In this case, the exhaust port may be formed on the urethane resin raw material injection side of the outer bag body, in other words, in the vicinity of the injection port.

  According to the characteristics of the present invention configured as described above, the fender body includes a fender body composed of a soft or semi-rigid urethane foam in an outer bag formed of a sheet material made of vinyl chloride resin in a bag shape. Since it accommodates, a fender can be installed in a wide place by forming the exterior bag body in a shape according to the installation environment. In this case, since the outer bag is formed in a bag shape and substantially wraps the entire fender body, the fender can prevent leakage of the fender main body from the outer bag, and the fender body Damage due to rubbing and deterioration due to use of the fender body at the waterside can be suppressed. In addition, the fender can be elastically deformed relatively freely because the outer bag is made of a sheet material and the fender body is made of a soft or semi-rigid urethane foam. Can be installed.

  Furthermore, since the outer bag is formed into a bag shape by the sheet material and the fender body is made of urethane foam, the fender can be manufactured at a place where the fender is required when necessary. . That is, the user of the fender must prepare the outer bag and the urethane resin raw material separately, and produce the fender by injecting the urethane resin raw material into the outer bag as necessary. Can do. For this reason, a fender can simplify transportation and storage.

  The soft or semi-rigid rigid urethane foam is a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups, a catalyst (for example, an amine compound), Mixing with a foaming agent (for example, water or fluorocarbon) and a foam stabilizer (for example, silicone oil) (hereinafter referred to as “urethane material”) to simultaneously perform the foaming reaction and the resinification reaction. It is a homogeneous plastic foam obtained by this.

Moreover, it is preferable that the flexible urethane foam in the present invention has a foaming ratio of 5 times or more and 60 times or less, or a density of 17 kg / m ³ or more and 300 kg / m ³ or less. Moreover, it is preferable that the semi-rigid urethane foam in the present invention has a foaming ratio of 10 times or more and 30 times or less, or a density of 40 kg / m ³ or more and 80 kg / m ³ or less. Semi-rigid urethane foam has an elastic property intermediate between so-called rigid urethane foam and soft urethane foam, and strictly distinguishing between soft urethane foam and semi-rigid foam Have difficulty.

  Another feature of the present invention is that, in the fender, the urethane foam has an open cell structure.

  According to another feature of the present invention thus configured, the fender is more easily elastically deformed than the case where the urethane foam has an open cell structure because the urethane foam has an open cell structure. Can be installed in a wide range of places.

  Another feature of the present invention is that, in the fender, the outer bag is closed at the inlet and the outlet after the liquid urethane resin material is injected.

  According to another feature of the present invention configured as described above, the fender can completely surround the fender body and protect the outer bag since the inlet and the outlet in the outer bag are closed. Intrusion of foreign matter and moisture (seawater, rainwater, etc.) into the body can be prevented.

  Another feature of the present invention is that, in the fender, the exterior bag body is air permeable inside and outside the exterior bag body through at least one of the inlet and the exhaust port even after the liquid urethane resin raw material is injected. Is that it is secured.

  According to another feature of the present invention configured as described above, the fender body is compressed and deformed because the air permeability is ensured by at least one of the inlet and the outlet in the exterior bag body. It becomes easy and can return to the original shape promptly even after compressive deformation, damage to the fender body itself can be prevented, durability can be improved, and usage can be expanded.

  Another feature of the present invention is that in the fender, the outer bag is closed by a part of a urethane foam in which at least one of an injection port and an exhaust port has an open cell structure. There is to be.

  According to another feature of the present invention configured as described above, the fender is configured such that at least one of the injection port and the exhaust port in the exterior bag body is blocked by a part of the urethane foam having an open cell structure. Therefore, it is possible to easily prevent foreign matters and moisture (seawater and rainwater) from entering the outer bag while ensuring the air permeability of the urethane foam.

  Another feature of the present invention is that, in the fender, the outer bag is formed in a rod-like shape as a whole in which both ends of the cylindrical body are formed in a hemispherical shape and closed. is there.

  According to another feature of the present invention configured as described above, the fender is configured by a rod-like shape as a whole in which the outer bag body is formed in a hemispherical shape at both ends of the cylindrical body. It can be used for a wide range of places such as a quay or quay as it is or in a state where it is elastically deformed as appropriate.

  Further, the present invention can be implemented not only as an invention of a fender, but also as an invention of a method for manufacturing a fender.

  Specifically, the method for producing a fender includes an injection port for injecting a liquid urethane resin raw material into a bag body made of a vinyl chloride resin sheet material and the liquid urethane resin raw material. A semi-rigid or soft urethane foam is prepared by preparing an outer bag body that has an exhaust port for exhausting air from the bag body at the time of injection, and filling the outer bag body with a liquid urethane resin and solidifying it. A fender main body forming step for forming a fender main body made of a body is included. According to this, the same effect as the said fender can be expected.

It is a partially broken front view which shows the outline of the external appearance structure and internal structure of the fender which concerns on one Embodiment of this invention. It is a top view which shows the outline of the external appearance structure of the fender shown in FIG. It is sectional drawing which shows the outline of the internal structure of the exterior bag body which comprises the fender shown in FIG. It is the flowchart which showed the process of the manufacturing method of the fender which concerns on this invention. It is a partially broken front view which shows the outline of the external appearance structure and internal structure of the fender which concerns on the modification of this invention. It is a partially broken front view which shows the outline of the external appearance structure and internal structure of the fender which concerns on the other modification of this invention. It is sectional drawing which shows the outline of the internal structure of the exterior bag body which comprises the fender which concerns on the other modification of this invention.

  Hereinafter, an embodiment of a fender according to the present invention and a method for producing the fender will be described with reference to the drawings. FIG. 1 is a partially broken front view schematically showing an outline of an external configuration and an internal configuration of a fender 100 according to the present invention. FIG. 2 is a flowchart showing the steps of the method for manufacturing the fender according to the present invention. FIG. 3 is a front sectional view schematically showing a state in which the core wire and the outer cylindrical body are assembled to the inner bag body in the fender 100 shown in FIG. Note that the drawings referred to in this specification are schematically shown by exaggerating some of the components in order to facilitate understanding of the present invention. For this reason, the dimension, ratio, etc. between each component may differ. The fender 100 is an instrument that is attached to a hull or quay to prevent and protect the hull from damage.

(Configuration of fender 100)
The fender 100 includes an exterior bag body 101. The exterior bag body 101 is a part that receives a liquid urethane resin raw material to form the fender body 110 and covers and protects the fender body 110 made of a cured urethane foam, and is a sheet made of vinyl chloride resin (PVC). The material is formed in a bag shape. In this embodiment, the sheet | seat material which comprises the exterior bag body 101 is comprised by thickness 2mm.

  The exterior bag body 101 extends in a cylindrical shape and is closed at both ends by spherical bag end portions 101a. On the outer surface of the two bag end portions 101a of the exterior bag body 101, a connecting tool 102 on which a rope or metal fitting for connecting the fender 100 to the hull or quay is hung is fixed.

The connector 102 is made of a resin material or a metal material, and has a through hole 102a through which a rope is passed or a metal fitting is hung. Further, one of the two bag end portions 101a (the upper side in the drawing) has two inlets 103 and two exhaust ports 104 on both sides of the connector 102.

  Among these, the inlet 103 is a through-hole for injecting a liquid urethane resin raw material into the exterior bag body 101. The exhaust port 104 is a through hole for exhausting the air in the exterior bag body 101 to the outside when the liquid urethane resin raw material is injected into the exterior bag body 101. The exhaust port 104 is a through hole for exhausting the air in the exterior bag body 101 to the outside when the liquid urethane resin material is injected, so that the urethane resin material injection side in the exterior bag body 101, that is, , Provided in the vicinity of the inlet 103. These inlets 103 and exhaust ports 104 are closed by adhesively fixing lids 105 made of the same resin sheet material as the exterior bag body 101. In addition, the inlet 103 and the exhaust port 104 should just be provided in the exterior bag body 101 at least 1 each.

The fender body 110 is a cushioning material that is disposed between the hull and between the hull and between the hull and the quay and prevents damage to the hull, and is made of a semi-rigid urethane foam. Here, the urethane foam is a urethane resin raw material, specifically, a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups as a catalyst (for example, an amine compound). Etc.), a foaming agent (for example, water, fluorocarbon, etc.) and a foam stabilizer (for example, silicone oil), etc. It is a plastic foam. Moreover, it is preferable that the semi-rigid urethane foam in the present embodiment has a foaming ratio of 10 times or more and 30 times or less, or a density of 40 kg / m ³ or more and 80 kg / m ³ or less. Therefore, the semi-rigid urethane foam in the present invention may contain soft urethane.

  The fender body 110 is formed in a shape extending in a rod shape along the inner shape of the exterior bag body 101 by injecting a liquid urethane resin raw material into the exterior bag body 101 and solidifying. In the present embodiment, the fender body 110 is formed in a long rod shape that extends in a columnar shape and has both end portions formed in a substantially spherical shape. In FIG. 1, FIG. 5, and FIG. 6, the fender body 110 is indicated by hatching composed of dot groups (point groups).

(Manufacture of fender 100)
Next, the manufacturing process of the fender 100 will be described with reference to FIG. As shown in FIG. 3, the worker who manufactures the fender 100 first manufactures the exterior bag body 101 as the first step. Specifically, the operator can use a rectangular sheet material in a plan view that forms a cylindrical portion between two bag end portions 101a, and two circular sheets in a plan view that form two bag end portions 101a. Each material is prepared and bonded together using an adhesive.

  In this case, the connecting tool 102 is fixed to each of the two sheet materials constituting the two bag end portions 101a of the exterior bag body 101 by an adhesive or the like in advance. In addition, two inlets 103 and two exhaust ports 104 are respectively formed in one of the two sheet materials constituting the two bag end portions 101a. Note that the two sheet materials constituting the two bag end portions 101a can also be integrally formed with the portion constituting the bag end portion 101a and the connector 102 using a processing method such as injection molding. In FIG. 3, the outer bag body 101 is in a deflated state before injecting the urethane resin raw material, but is shown in an expanded state (inflated state) for easy understanding. Moreover, in FIG. 1 and FIG. 3, each sheet | seat material which comprises the exterior bag body 101 is not shown separately, but is shown integrally.

  Next, an operator inject | pours a urethane resin raw material in the exterior bag body 101 as a 2nd process, and shape | molds the fender main body 110. FIG. Specifically, the operator injects a liquid urethane resin material into the exterior bag body 101 using a urethane injection device (not shown). In this case, the urethane injecting device injects a liquid urethane resin raw material from the two inlets 103 in the exterior bag body 101. As a result, the outer bag body 101 escapes from the outer bag body 101 through the two exhaust ports 104 as the urethane resin raw material is injected. In FIG. 3, the injection of the urethane resin material into the outer bag body 101 and the discharge of air from the outer bag body 101 are indicated by broken line arrows, respectively.

  The liquid urethane resin raw material injected into the outer bag body 101 is filled while pushing the outer bag body 101 from the inside and starts to cure immediately. Thereby, the urethane resin raw material injected into the exterior bag body 101 becomes a semi-rigid urethane foam that is foamed and cured to a size and shape corresponding to the size and shape of the internal region of the exterior bag body 101. A fender body 110 is configured. The step of forming the fender body 110 in the second step corresponds to the fender body forming step.

  Note that the second step need not be performed immediately after the first step. That is, the worker prepares and stores the outer bag body 101 and the urethane resin raw material separately, and executes the second step and subsequent steps when the fender 100 is required. Can also be completed. In this case, the operator can prepare the urethane resin raw material in a container such as a bucket or a bottle, and can inject it into the exterior bag body 101 directly from the injection port 103 in the exterior bag body 101 or via a funnel. . That is, the fender 100 according to the present invention can be completed from a semi-finished product at the site where the fender 100 is used.

  Next, the worker closes the inlet 103 and the outlet 104 with the lid 105 as a third step. Specifically, after preparing the lid 105, the operator attaches the lid 105 to each of the two inlets 103 and the exhaust outlet 104 in the exterior bag body 101 by using an adhesive (not shown). The inlet 103 and the exhaust port 104 are respectively closed. Thereby, the fender 100 in which the fender body 110 is provided in the exterior bag body 101 is completed.

(Operation of fender 100)
Next, the operation of the fender 100 configured as described above will be described. A user who uses the fender 100 prepares the fender 100 and installs it on the hull or quay. Specifically, the user attaches the fender 100 to the hull or quay through a rope (not shown) to each connector 102 provided at both ends of the fender 100. The fender 100 is interposed between the hull and the hull or between the hull and the quay and functions as a cushioning material to prevent damage to the hull.

  In this case, the fender 100 is flexible against pressure from the hull or quay because the outer bag 101 is made of a flexible sheet material and the fender body 110 is made of a semi-rigid urethane foam. The pressure is absorbed while being elastically deformed, and when the pressure is released, it is quickly restored to its original shape. The exterior bag body 101 protects the fender body 110 from sunlight, wind and snow, and moisture (seawater, rainwater, etc.) as well as rubbing the fender body 110 against the hull and quay. When the exterior bag body 101 is damaged, the user can repair the sheet material made of resin or cloth by hitting the damaged portion.

  As can be understood from the above description of the operation, according to the above embodiment, the fender 100 is composed of a semi-rigid urethane foam in the exterior bag body 101 in which a sheet material made of vinyl chloride resin is formed in a bag shape. Since the fender body 110 is accommodated, the fender 100 can be installed in a wide range of places by forming the outer bag body 101 in a shape corresponding to the installation environment. In this case, the fender 100 can prevent leakage of the fender body 110 from the exterior bag body 101 since the exterior bag body 101 is formed in a bag shape and substantially wraps the entire fender body 110. At the same time, damage due to rubbing of the fender body 101 and deterioration due to use of the fender body 110 at the waterside can be suppressed. Further, the fender 100 can be elastically deformed relatively freely because the outer bag body 101 is made of a sheet material and the fender body 110 is made of a semi-rigid urethane foam. Can be installed at a place.

  Furthermore, the fender 100 is manufactured when the fender 100 is needed at the place where the fender 100 is required because the outer bag 101 is formed into a bag shape by the sheet material and the fender body 110 is made of urethane foam. can do. That is, the user of the fender 100 prepares the outer bag body 101 and the urethane resin raw material separately, and injects the urethane resin raw material into the outer bag body 101 as necessary, thereby providing the fender. 100 can be made. For this reason, the fender 100 can simplify transportation and storage.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention. In the following modifications, the same reference numerals are given to the same components as those in the above embodiment, and the description thereof is omitted.

  For example, in the above-described embodiment, the exterior bag body 101 is composed of one sheet material. However, the exterior bag body 101 is not necessarily limited to the above embodiment as long as it is configured in a bag shape that can be flexibly deformed with a sheet material made of vinyl chloride resin. That is, the exterior bag body 101 can be configured by stacking two sheet materials made of vinyl chloride resin. The sheet material constituting the exterior bag body 101 preferably has a thickness of 1 mm or more and 5 mm or less, more preferably 1 mm or more and 3 mm or less. It can also be composed of an impregnated vinyl resin.

  Moreover, in the said embodiment, the inlet 103 and the exhaust port 104 in the exterior bag body 101 were each configured to be closed with the lid 105. However, the exterior bag body 101 can also be configured in a state where air permeability is secured inside and outside the exterior bag body 101 by omitting the lid 105. In this case, the blocking step by sticking the lid 105 to the inlet 103 and the exhaust port 104 in the third step in the manufacturing process of the fender 100 is not necessary. According to this, the fender 100 is easy to compress and deform the fender body 110 and can quickly return to its original shape even after compressive deformation, preventing damage to the fender body 110 itself and durability. Can be improved and the usage can be expanded. It should be noted that the air permeability of the outer bag 101 need only be ensured in at least one of the inlet 103 and the exhaust port 104. Further, when a plurality of inlets 103 and exhaust ports 104 are formed in the outer bag body 101, it is only necessary that air permeability is ensured in at least one of these holes.

  Further, when air permeability of the exterior bag body 101 is ensured by the inlet 103 and / or the exhaust port 104, for example, as shown in FIG. It can be blocked by a part of the urethane foam. According to this, the fender 100 can easily prevent entry of foreign matter and moisture (seawater or rainwater) into the outer bag while ensuring the breathability of the urethane foam.

Moreover, in the said embodiment, the fender main body 110 was comprised with the semi-rigid urethane foam. However, the fender body 110 may be made of a urethane resin that is elastically deformable (can be restored to its original shape after being deformed). Therefore, the fender main body 110 can also be comprised with a soft urethane foam. In this case, it is preferable that the flexible urethane foam has a foaming ratio of 5 times or more and 60 times or less, or a density of 17 kg / m ³ or more and 300 kg / m ³ or less. Moreover, it is preferable that the semi-rigid urethane foam in the present invention has a foaming ratio of 10 times or more and 30 times or less, or a density of 40 kg / m ³ or more and 80 kg / m ³ or less. The soft or semi-rigid urethane foam constituting the fender body 110 preferably has an open-cell structure inside, but may have a closed-cell structure as long as it can be elastically deformed.

  Moreover, in the said embodiment, the fender 100 was comprised in the shape extended in round bar shape. However, the shape and size of the fender 100 are appropriately determined according to the specifications of the fender 100. Therefore, the fender 100 can be formed into a shape other than a round bar, for example, a spherical shape, a jum shape or a barrel shape.

  For example, the fender 100 can be formed in a drop (raindrop) shape as shown in FIG. In this case, the fender 100 has the outer bag body 101 formed in a drop shape, and a connector 102 provided at the upper end in the figure of the outer bag body 101 formed in a drop shape. Further, the fender 100 is formed with one inlet 103 and one outlet 104 at the bag end 101a of the outer bag 101, respectively. In FIG. 6, the injection port 103 is not shown hidden behind the lid 105.

  Moreover, in the said embodiment, the fender 100 was provided with the connection tool 102 in the both ends of the exterior bag body 101, respectively. However, the fender 100 only needs to be configured so that the fender 100 can be attached to a hull, a quay, or the like, and does not necessarily include the connector 102. Therefore, for example, as shown in FIG. 7, the fender 100 can be configured by penetrating the rope 106 through one end of both ends of the exterior bag body 101 via the sleeve 107. In this case, the rope 106 can be easily prevented from coming off the outer bag body 101 by providing a knot in the outer bag body 101, and is integrated with the fender body 110 by solidifying the liquid urethane resin raw material. Also, it is possible to prevent the outer bag body 101 from coming off.

  The sleeve 107 is a part for protecting the outer bag 101 from the rope 106, and has an outer diameter that fits a resin material into a through-hole formed in the outer bag 106 and an inner diameter that allows the rope 106 to pass therethrough. It is formed in a cylindrical shape. In this case, the sleeve 107 is set to have an inner diameter such that the liquid urethane resin raw material does not leak between the sleeve 106 and the rope 106, but an elastic body (not shown) such as cloth or soft urethane resin is provided between the sleeve 106 and the rope 106. ) Can be prevented from leaking the liquid urethane resin material and rubbing the rope 106. In FIG. 7, illustration of the other end side of the rope 106 is omitted.

100 ... fenders,
DESCRIPTION OF SYMBOLS 101 ... Exterior bag body, 101a ... Bag edge part, 102 ... Connection tool, 102a ... Through-hole, 103 ... Inlet port, 104 ... Exhaust port, 105 ... Cover, 106 ... Rope, 107 ... Sleeve,
110: Fender body.

Claims (7)

An inlet for injecting a liquid urethane resin raw material into the bag body made of a sheet material made of vinyl chloride resin and an exhaust for exhausting air from the bag body when injecting the liquid urethane resin raw material An exterior bag body in which each mouth is formed;
A fender having a fender body made of a soft or semi-rigid urethane foam that is solidified by filling the liquid urethane resin raw material through the inlet into the exterior bag body. In the fender according to claim 1,
The urethane foam is
A fender having an open cell structure inside. In the fender as claimed in claim 1 or claim 2,
The exterior bag body is
The fender, wherein the injection port and the exhaust port are closed after the liquid urethane resin raw material is injected. In the fender as claimed in claim 1 or claim 2,
The exterior bag body is
Even after the liquid urethane resin raw material is injected, the fender is secured through the outer and outer bag bodies through at least one of the injection port and the exhaust port. In the fender according to claim 4,
The exterior bag body is
At least one of the injection port and the exhaust port is blocked by a part of the urethane foam having an open cell structure. In the fender as described in any one of Claims 1 thru | or 5,
The exterior bag body is
A fender having a rod-like shape as a whole in which both end portions of a cylindrical body are formed in a hemispherical shape and closed. An inlet for injecting a liquid urethane resin raw material into the bag body made of a sheet material made of vinyl chloride resin and an exhaust for exhausting air from the bag body when injecting the liquid urethane resin raw material Prepare the outer bag body with each mouth,
A fender body manufacturing method comprising a fender body forming step of forming a fender body made of a semi-rigid or soft urethane foam by filling and solidifying the liquid urethane resin in the exterior bag body. .

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