JPS58160422A - Fender for ship and production thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an improved insect repellent material for ships and a method for producing the same.

More particularly, the present invention relates to a marine insect repellent having a single elastomeric shell containing a solid foam pan therein, and a method VC for making the same.

Various types of marine insect repellent materials are often used on military and commercial vessels in conditions that include significant bulk and, in addition, extreme compression and tension forces, resulting in elongation of the repellent materials. Problems associated with marine insect repellents include separation when the body of the insect repellent is attached to the mooring gear, which forms a critical part of the repellent, and/or damage to the repellent during docking or mooring of the vessel. Destruction of insect repellent materials in service consists of damage to insect repellent materials that provide the necessary protection for ships or vessels using the equipment. US Pat. No. 4,136,632 (page 5) discloses an insect repellent designed to avoid the above-mentioned problems. The patented insect repellent material mentioned above is
It consists of an outer flexible shell forming a chamber comprised of a single piece of uniform elastomeric material, a compressible flotation material within said chamber, and a mooring rig secured to said shell. Although not discussed in detail in this patent, the insect repellent material is formed by molding a shell with the unit, followed by insertion of the particulate foam material and mooring into or with the shell. Although an improvement over conventional marine insect repellents, the insect repellent described in U.S. Pat. The granular nature of is the less efficient shape.

Accordingly, it is a principal object of the present invention to provide an improved insect repellent material that has increased resistance to compressive and tensile forces without tearing or breaking the mooring or ejecting it from the mooring.

Another object of the present invention is that the structure is simple and therefore good (6th
Page) The object of the present invention is to provide a method for manufacturing an improved insect repellent material for ships that allows for good quality control.

These and other objects of the invention will become apparent from the description that follows with reference to a particularly preferred embodiment and the accompanying drawings showing the same.

In summary, the objects of the present invention are achieved by creating a marine insect repellent comprising a single elastomer shell having two ends and a cavity at each end of the shell. The cavity is sized to be less than about 25 inches in diameter of the shell. A plurality of moorings are attached to each of the cavities.

Since the dimensions of these cavities are constrained, they provide a large resistance to compressive and tensile forces applied to the insect repellent. A solid foam pan is contained within the shell. The pan is sized to have a diameter approximately as large as the inside diameter of the shell and a length approximately as large as the inside length of the shell. Due to the interference fit within the shell and the fact that the pan is a flexible solid form, the energy absorbing properties of the shell are exploited to a large extent. Solid fu(
Page 7) Ohm Panha gives a safety factor for the unlikely outcome of complete failure of the elastomeric shell.

This bogen material is made by molding two roughly equal or similar half pieces. Each of the shell halves has a 17-end cavity at one end of the shell halves having a dimension less than or equal to about 25 times the diameter of the shell halves and the finished diameter of the shutter. The other end of the shell half is completely open. Preferably, each of the shell halves has an enlarged portion at the fully open end of the halves. These enlarged portions are molded so that the end portions of the two halves engage to form a recessed area defined by the raised portions, which area
Make sure the two ends are joined. It is important that the junction of the two halves be a generally smooth inner central section. For this reason, if the bread has approximately the same diameter as the inside of the shell, solid bread can be inserted into these shell halves. The solid pans are inserted into their shell halves so that the enlarged portions are engaged. To join the two halves, a band-shaped mold is placed around the enlarged part, spanning and engaging the recessed area.

A liquid thermoset elastomeric material compatible with the material of the elastomeric shell is cast into the recessed area sealed by the strip mold.

The cast elastomer is cured into a unitary structure. Although sometimes preferred, it is not necessary to form shell halves with enlarged end portions.

The shell halves may be formed of uniform thickness and then the edges of the halves may be chamfered or tapered to engage and form recessed areas. To join the two halves, a strip mold with an enlarged area is mounted around the edges, so that liquid elastomer is poured into the strip mold to create the layered part.

Prior to the insertion of the pan and the joining of the shell halves, the gates and moorings are attached. Preferably, the cavity at the end of each shell half has raised ridges and these ridges? Attach mooring gear to Suhe.

Those moorings are now durable moorings (No.
(page 9) in order to engage preferably with the death portion of the elastomer shell.
It can be conveniently inserted using a cup-shaped member.

Therefore, due to its comprehensive structure, this marine door barrier material has high resistance to compression and tension forces, and
Furthermore, it is easily manufactured and has excellent quality control during manufacturing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, ten shells made according to the invention, two shell halves 12 and 14 having a generally cylindrical shape and terminating at approximately 18 points, solid foam pans n. and mooring gear which serves to close off the shell cavity and which serves as a means of securing the fencing to the vessel or vessel. As shown, the pan n is solid and unitary, with a shell 16 formed generally from shell halves 12 and 14.
It has the internal dimensions as shown in Figure 3. Shell half 12
and 14 have medial and lateral protrusions and a progressively thickening region terminating in 32 at the hollow end, as can be seen from the drawings.

The projecting parts (9) and 32 are joined together by a mooring device U consisting of an inner cup member (page 10) and an outer cup member (page 10). These inner and outer cup members closing between the projecting portions and 32 are joined together by bolt means 46 which pass through the outer cup member and are threadedly engaged to the inner cup member.

As best shown in FIG. 2, the gel halves 12 and 14 are engaged to form a joint with a recessed area 48 filled between the polymers. As seen in the figures, shell half 12 has a cutout portion 52 and shell half 14 has an engaging extension portion 54. A seal is created that retains the polymer at the joint while maintaining a smooth interior surface. A strip-shaped mold (not shown) with openings for injection of liquid polymer is placed around the bonding area. after that,
The liquid reactive material is cast into the recessed area and cured.

As illustrated in FIG. 3, the finished door consists of a single shell 16. However, the bread is solid, which imparts great energy absorption properties and structural integrity to the door barrier. The diameter of the terminal cavity 18 is made relatively small compared to the diameter of the shell material (page 11), i.e., approximately 25 times the diameter of the shell 16).
Because they can be made small, their cavities are easily closed off with mooring gear. Because the diameter of the openings is relatively small, the forces exerted on the mooring gear are such that they are less likely to cause failure than with relatively large openings, and more particularly on protrusions or bosses. The enlarged protruding portion, which gradually increases in size as it approaches the height, cooperates with the inner and outer cup members and the joints to resist the force applied to the mooring gear or the form pan. However, it provides greater resistance to withdrawal of the polymer shell from the mooring gear.

Although not essential, the solid foam pan can be drilled with a hole and a chain or other suitable support can be placed inside the hole so that the ends of the chain or support can be connected to the mooring gear. See Figure 3.

Mainly with reference to FIG. 2, shell ] 2 and 14
The thickness at the point is approximately 8++ according to the dimensions of the antifouling material.
+m (0.3 inches) to 51ii+ (2 inches). The thickness at point Y is about 5 times thicker than the thickness at point X.
It should be between 50 and 50 yen. The length of the cavity M-M', as shown in FIG. It is not necessary to any extent. The use of cutout portion 52 and engagement extension portion 54 enhances the seal and further improves the structural strength of the bond. The transition area between the shell itself and the side of the protrusion and 32 is adapted to distribute the stretch of the shell over the entire shell end, without concentrating the stretch in the area immediately adjacent to the protrusion. K. Since the cavity 18 is relatively small, the transition range is relatively short and can be adjusted in the range before the end curvature of the shell. It turns out that the purpose of this thickened section is to reduce the effects of possible stress concentrations in the bonding plane.

In manufacturing the marine protection material of the present invention, the shell halves and 14 are separately formed as suitable molded articles. After the shell halves have been molded and partially cured, the shell edges to be joined are cleaned at the joining point or area M-M' to remove any release agent. The bond area is ground to ensure complete removal of the release agent and increase the surface area. The bond area is then washed with a solvent such as methyl ethyl ketone (MKK) if the elastomer material is a polyurethane such as DuPont's Adiprene L-100, so the urethane elastomer is slightly swollen. ! 4, in the case of a polymer didistomer material,
Different solvent materials may be selected.

In the case of the Nidistomer shell, the mixing ratio is preferably about 1 to 9 parts of adiprene L-100 to M
EK, optimally Adiprene L-1004 parts vs. MNK
Adiprene L-100 and MFi made into 6 parts
Apply a primer, a mixture of K. to the bonding area. This shell has a sticky surface for all MKK
Preferably placed in the open at approximately 100'C to remove solvent. Bonding range and adiprene L −1
A belt-shaped (page 14) mold is placed around the 00 polymer and a curing agent is poured into the cavity. After casting,
The polymer is cured. Curing can be done in the available state. Preferably, curing can be accelerated by placing the shell in the open and heating the shell at a temperature from about 100°C. The length of curing time depends on the curing temperature.

When the curing temperature is 100°C, good curing is obtained in a period of 1 to 6 hours. If cured at relatively low temperatures, relatively long curing times are required.

As mentioned above, polyurethane elastomers have been found to be eminently suitable for forming antifouling materials. E, ■,
Adiprene L-100, marketed by Dupont (18Nemoura & Co.), has a 4.4'-
Although particularly preferred in combination with the curing agent which is methylene-bis-2-chloroaniline, other elastomeric materials could be utilized in forming the polymeric shell. FIG. 4 is generally similar to FIG. be. However, as shown in FIG. 4, these shell halves do not have thickenings at the joints.

Rather, their edges are beveled to form a quadrant that holds the cast elastomer. As a result of the strip mold configuration, the cast elastomer is raised around the four parts to a larger diameter or thickness than the shell body to form a curable seal. This method of joining the two halves is convenient in that it can actually be used to repair a shichibogenzai that has been destroyed or torn at the commissioned part. As shown in the accompanying drawings, there is a slightly raised area at the joining point where the shell is on its outer surface. However, the inner surface of the shell is smooth or generally smooth, which is preferred from a strength standpoint and also from the standpoint of inserting the solid pan 22f into the shell. The smooth surface allows the use of a pan with a diameter approximately the same as the inside diameter of the shell 16. The entire shell and doorstop material is
It provides an excellent appearance without the need to smooth the outer surface of the joint.

The door barrier of the present invention has a single nitrogen shell, a solid foam pan and a small cavity opening sump K enclosed by a mooring gear, great structural strength and a diameter of 120 mm.
CIIL (4 doses) or more, length approximately 150 (1 m (6 puffs))
It can be easily manufactured with dimensions within the above range.

Using the concept of a portion of the present invention, it is possible to have an enlarged projection or boss, 32, as a separate strip section and to gradually connect these strip sections to the main body section in the following manner. The thickened sections 20 can be formed, that is, by spraying a resin component onto the above-mentioned strip sections, with or without reinforcement with a plurality of filaments, the main body of the door barrier can be formed in these end sections. It depends on K to liven up the part. The moorings can then be inserted into the end units to form a complete fencing.

Furthermore, the manufacturing method of the present invention can also be used to provide a door barrier material as shown in FIG. As shown in FIG. 5, the two end halves 12 and 14 are molded with a material gap. As shown, the end portions do not have a cavity at the end opposite their half-open end for receiving mooring gear (page 17). Rather, after joining the end halves, the gatelock is wrapped with a longitudinal band 62 and a plurality of transverse band markings supporting the mooring gear 66. The band mark and 62 are joined with a plurality of rivets. This arrangement is no more advantageous than the embodiments shown in FIGS. 1-4. However, this type of fencing using the concepts of the present invention can be used as long as the forces applied to the mooring parts are not particularly dangerous.

It will be apparent to those skilled in the art that various modifications can be made to the structural features of the ship door fence material of the present invention and the method of manufacturing the same. These modifications that are within the ability of those skilled in the art are considered to be within the scope of the appended claims.

[Brief explanation of drawings]

FIG. 1 is an exploded partial cross-sectional view of a marine door barrier according to the invention, and FIG. 2 shows the shell halves in sealing engagement with a relatively large thickness in the joined position and thus made of polymeric material. An enlarged cross-sectional view (page 18) of the joined area of the two halves of the filled four-part Nistomer shell, FIG. The cross-sectional view of the finished door barrier shown, Figure 4, shows two elastomer shells with both half-closed ends of the shells together with the shell body having a uniform thickness and a recessed area filled with polymeric material at the joining location. FIG. 5 is an enlarged cross-sectional view of the bonding range of the half-break, which shows a partially cut cross-section of another example of a ship's gate door material using the manufacturing method of the present invention.
- is a side view. 12, 14, 16...Shell body 18...
Cavity 22...Form pan U...Mooring gear patent applicant Rubber, Mirrors, Incorporated Z Kei 5 Voluntary procedural amendment to the Commissioner of the Patent Office Kazuo Wakasugi, Incident Indication 1982 Patent Application No. 30650 2. Name of the invention: Ship door-proofing material and its manufacturing method 4. Agent

Claims (1)

[Claims] 1. A single elastomer shell having two ends and a cavity at each end of the shell, the distribution cavity being approximately 25 inches or less in diameter of said shell, and having a cavity at each end of said shell; mooring gear to be attached and a solid flexible foam pan interconnected and included within said shell, the top pan having a diameter approximately the same as the inside diameter of said shell and a large length #1 equal to the inside length of said shell; A marine insect repellent material characterized by being made of a material that has 2. Uniform elastomer shell -6,t? The insect repellent material according to claim 1, which is a +3 urethane elastomer shell. 3. A cavity at each end of the elastomer shell is defined by inner and outer thickened projections or boss portions, and the inner and outer projections or boss portions close the cavity at each end of the shell (page 2). The insect repellent material according to claim 2, wherein the insect repellent material is engaged with the mooring gear so as to be chained. 4. The mooring gear comprises an inner cup member attached around the inner protrusion and an outer cup member attached around the outer protrusion, and the inner and outer cup members are fixed together. The insect repellent material according to claim 3. 5. The pan comprises a cavity extending from one end of the pan to the other, and includes a flexible tensioning member within the cavity, said tensioning member being secured to the mooring gear at each end. The insect repellent material according to claim 4, characterized in that: 6. The insect repellent material according to claim 5, wherein the tension member is a chain. 7. The insect repellent material according to claim 1, wherein the bread is made of polyethylene foam. 8. An insect repellent according to claim 7, characterized in that the pan is formed from a plurality of foam sections that are glued and fixed together (page 3). 9. A method for manufacturing a marine insect repellent material consisting of a solid flexible foam pan contained within a single elastomer shell and a 1-IP shell, in which two approximately equal halves are molded separately to assemble said elastomer shell. , wherein said shell halves are shaped to have a completely open end with each of said shell halves at the extreme end of said opening having one enlarged end portion such that said enlarged end portion engages the other of said end portions; are shaped to form a raised outer central portion with a concave area and a smooth inner central portion when engaged, inserting a solid foam pan into said shell halves so that the half enlarged portions are brought together. and the joint has an outer surface and a smooth inner surface including a recessed area extending through the joint, and a band-shaped mold is secured around the enlarged portion including the recessed area. , casting a liquid elastomer material compatible or identical to the material of the polymer shell into the recessed area and curing the cast polymer to provide a unitary structure. A marine insect repellent having a single elastomer shell made by the method of claim 9.