KR101399008B1 - Sea buoy cover hot melt adhesive composition and method of using the same buoy - Google Patents

Abstract

The present invention relates to a hot melt composition for attaching a sea surface buoy cover, and a production method of a buoy using the same, and more specifically, to: a hot melt composition for attaching a sea surface buoy cover which prevents the attached portion from being peeled off or separated for years when the attached portion is exposed to seawater in a seawater temperature of -40-50°C, by attaching Styrofoam with light specific gravity to a polyolefin sheet which is impossible to be attached to seaweeds using a hot melt adhesive with excellent adhesive force; and a production method of a buoy using the same. The hot melt composition: has durability against ultraviolet rays which maintains adhesive force when the composition directly receives direct light; and has an effect of adhering by the heat fusion in a heat medium by being sprayed in a spray type in a predetermined temperature range.

Description

Technical Field [0001] The present invention relates to a hot melt composition for bonding a sea surface buoy cover and a method for manufacturing a buoy using the same,

The present invention relates to a hot-melt composition for bonding a sea surface buoy cover and a method for producing buoys using the same, and more particularly to a hot- To thereby prevent the adhesive portion from being peeled off or detached for years even if the temperature of the seawater is exposed to seawater for a long period of time in a temperature range of -40 to 50 占 폚, and to a method for manufacturing a buoy using the hot melt composition.

Riches (floats, floats, buoys, or buoys) are tools used to float water facilities such as facilities needed for various aquaculture and buoyancy, using buoyancy.

Buoys currently used mainly include buoys made of styrofoam, buoys using blow molding and injection molding using plastic materials, and tubular buoys made of air-injected rubber.

Generally, buoys of the most widely used styrofoam material are fragile and easily broken by external impacts such as birds, waves, and work lines. The buoy of the styrofoam material is damaged by strong ultraviolet rays and has a very short service life. In addition, since the density of styrofoam is low and the surface is rough, foreign matter such as seaweeds of various seaweeds is easily attached. As the water penetrates into the styrofoam, the buoyancy is rapidly lowered with time and the broken styrofoam pieces float easily Causing serious marine pollution and coastal pollution.

Styropor fragments broken out of buoys of styrofoam play a role of habitat of various pathogens and cause a pest disease. Even marine fish die from eating styrofoam pieces. Thus, buoys of styrofoam have a negative effect on the conservation of marine ecosystems and fish stocks. As a temporary measure to solve this problem, there is used a product in which a styrofoam is covered with a PE material. However, these products can not prevent seawater penetration, and are easily corroded and damaged by sunlight and seawater, and the scrap fragments are also causing ocean pollution.

The bulk produced by the method of blow molding using a plastic material or after injection molding and assembling has a structure in which a hollow portion is formed to give buoyancy. Such riches are susceptible to shock, and the internal self-contraction and expansion due to seasonal temperature changes can cause the rich itself to be distorted and damaged. Further, in order to seal the air inlet formed in the hollow molding, a cap is inserted into the injection port, and the cap is heated and compressed. However, there is a problem that the pressed portion is corroded while contacting the seawater. In addition, the buoyant force may be lost due to the penetration of water into the minute gap formed by the corrosion of the press-contact portion. In addition, the rich material using the above-described plastic material is weak in the stress due to the water pressure, so that when the load is heavily loaded or flooded, the rich material may be distorted. If the water temperature is low, the rich person can easily rupture even in a weak impact. Even if the rich part is slightly damaged, the water penetrates into the hollow part of the rich part, and the buoyant force is lost, and the problem is that it sinks immediately.

In the case of a tube-shaped rubber material having air injected therein, there is a risk that the material may be deformed by strong ultraviolet rays, or the rubber tube may burst due to internal air expansion or irritation of sharp foreign matter. If the rubber tube bursts like this, it loses its buoyancy and sinks into the water immediately, which can cause a serious obstacle to the culture. Recently, a protective cover is made of a synthetic resin cloth, and a tubular rich part is inserted and fastened thereto. However, even if this method is used, there is a problem that the tube body expands due to solar heat. In addition, when the rubber tube receives a large load, the opening or the sewing portion of the protective cover may open or burst. Further, since the surface of the protective cover of the rubber tube is made of a fibrous structure, attachment of various attachment creatures such as a barnacle, mussel, and the like is severe, resulting in a heavy load on the buoy, resulting in loss of function as a rich person. In order to prevent this, a toxic antifouling agent is used for the fiber coating, but this also has a harmful effect on the marine ecosystem environment.

Therefore, there is an increasing demand for buoys that can prevent marine pollution and ecosystem damage caused by fragments of styrofoam buoys, or buoys which can be used semi-permanently without fear of loss or loss of buoyancy.

Examples of such conventional techniques include those disclosed in Utility Model Registration No. 0309039 (registered on Mar. 17, 2003), Utility Model No. 2000-0020942 (published on December 15, 2000), Patent Registration No. 0857470 (Registered trademark) No. 09-22, 2008, and Utility Model Registration No. 227202 (Registered on Apr. 02, 2001). In addition to the disadvantages mentioned above, this prior art has been developed to cover the outer surface of the buoy with a cover to protect the buoy However, there is a disadvantage that it is necessary to fix the buoy by using a strap in a part where the buoy can not be put, and there is a disadvantage that it is difficult to adjust the buoyancy in case of night, Since shells such as shells and algae attach to the buoyancy, they must be cleaned regularly. At this time, part of the styrofoam is dropped together, resulting in defects and loss of buoyancy Had a drawback.

Document 1. Utility Model Registration No. 0309039 (Registered on Mar. 17, 2003) Document 2. Utility Model No. 2000-0020942 (disclosed on December 15, 2000) Literature 3. Patent Registration No. 0857470 (2008. 09. 02. Registration) Literature 4. Patent Registration No. 0888397 (registered on Mar. 05, 2009)

Accordingly, a solution to the problem of the present invention is to provide a polyolefin sheet, which is made of a polyethylene foam and has a light weight, such as styrofoam, marine shellfish and seaweed, Adhere so as to be integral; It is an object of the present invention to provide a hot-melt adhesive having excellent adhesiveness so that adhesive property can be maintained for a long time in seawater.

The present invention relates to a buoy forming step of forming a buoy formed of a styrofoam, which is foam-molded in any one of hollows or integrally filled, into a mold;
And has a viscosity of 1,000 to 2,500 cps / 150 캜 and a softening point of 50 to 110 캜, and is used in an amount of 3 to 20% by weight of any one of paraffinic and polyethylene waxes, ethylene vinyl acetate and amorphous polyalphaolefin 20 to 70% by weight of any one of amorphous poly alpha olefin polymers, 20 to 50% by weight of any one of petroleum based and rosin ester based tackifying resins, 3 to 30% by weight of any one of paraffin type and polybutene type softening agents By weight, and 0.5 to 5% by weight of an antioxidant;
The hot-melt composition has a viscosity of 1,000 to 2,500 cps / 150 ° C and a softening point of 50 to 110 ° C to produce a hot melt. The hot-melt is sprayed to any part of the surface of the polyolefin sheet or the surface of the polyolefin sheet in the range of 120 to 170 ° C A hot-melt applying step of applying the hot-melt method; And
It is impossible to adhere seaweeds and shellfish to the surface of the styrofoam at a temperature in the range of -40 to 50 占 폚 in the seawater temperature range so that the hotmelt is positioned between the polyolefin sheets disposed on the sea surface without changing the weight, And a polyolefin sheet fusing step in which the foil is adhered so as to be integrally formed by thermal fusion in a heat conductive member in a temperature range of 100 to 150 占 폚.

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The present invention relates to a method for producing a polyolefin sheet which is integrally formed or made of a polyethylene foam foam so as to form a space in an inner diameter, and which is made of a lightweight styrene foam and a polyolefin sheet incapable of attaching sea shells and seaweeds, Wherein one of paraffin type and polyethylene type wax, one of ethylene vinyl acetate and amorphous poly alpha olefin polymer and styrene type thermoplastic rubber (SBS SIS SEBS), one of petroleum type and rosin ester type tackifying resin, It is effective to provide a hot-melt adhesive composition comprising any one of paraffin type and polybutene type softening agents and an antioxidant.

The present invention provides a hot-melt adhesive which is excellent in adhesion of light styrofoam, sea shells and seaweed-resistant polyolefin sheets, maintains adhesive property for a long time at -40 to 50 ° C in seawater, Which is durable to ultraviolet rays and is applied in a spraying manner at a constant temperature range, and is thermally fused in a fruit body, thereby providing an effect of causing adhesion.

1 is a front view of a preferred embodiment of the sub-
Fig. 2 is an enlarged cross-sectional view of a part of the styrofoam according to the present invention in a state where a hot melt is sprayed
Fig. 3 is an enlarged cross-sectional view of the polyolefin sheet of the present invention in a state in which the polyolefin sheet is thermally fused to the styrofoam by hot-
4 is a block diagram of a preferred embodiment of the method of the present invention

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

Fig. 1 is a front view of a preferred embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of a main part in a state in which a hot melt is sprayed on the styrofoam of the present invention, Fig. 3 is a cross sectional view of the polyolefin sheet of the present invention Sectional view of an enlarged view of the state of the present invention.

The buoys 10 made of the styrofoils 11 are made by molding a mold and supplying the polystyrene to the mold and foaming to mold the mold so as to have a space in the inner diameter or the groove 12 on both sides of the outer diameter.

The buoys 10 made of the styropoles 11 are formed by spraying the hot melt 20 uniformly in the inside of the outer diameter or the polyolefin sheet 30 and then thermally fusing the styrofoam 11 and the polyolefin sheet 30, .

The hot melt may contain 3 to 20 wt% of one of paraffin and polyethylene wax, ethylene vinyl acetate and amorphous poly alpha olefin polymer, styrene-based thermoplastic rubber (SBS SIS SEBS) 20 to 70% by weight of any one of petroleum based and rosin ester based tackifying resins, 3 to 30% by weight of any one of paraffin based and polybutene based softening agents, 5% by weight of the composition.

The content of any one of the paraffinic and polyethylene waxes is 3 to 20% by weight. When the content is less than 3% by weight, the viscosity of the paraffinic and polyethylenic waxes is too high, It is preferably 16% by weight.

The content of any one of ethylene vinyl acetate, amorphous poly alpha olefin polymer and styrene-based thermoplastic rubber (SBS SIS SEBS) is 20 to 70 wt%, and when it is less than 20 wt% The adhesiveness is weakened to cause durability problems, and when it is 70% by weight or more, the viscosity is too high to cause workability such as sprayability, so it is preferably 40% by weight.

The content of any one of the petroleum-based and rosin ester-based tackifying resins is 20 to 50% by weight. When the amount is less than 20 parts by weight, problems occur such as workability due to an excessively high viscosity, , It is preferably 25% by weight.

When the content is less than 3% by weight, the flexibility of the paraffin-based or polybutene-based softening agent is insufficient. As a result, It is preferably 16% by weight.

The content of the antioxidant is from 0.5 to 5% by weight. When the content of the antioxidant is less than 0.5% by weight, the effect of preventing oxidation is deteriorated. When the content of the antioxidant is more than 5% by weight, the content of the antioxidant is preferably 3% by weight.

The hot melt adhesive made of the composition is excellent in adhesion between the styrofoam 11 and the polyolefin sheet 30. Since the polyolefin sheet 30 can not attach seaweeds and shellfish to the surface of the polyolefin sheet 30, It will provide the installed state.

The buoy table (10) of the present invention provides excellent adhesion for many years without deterioration of the adhesiveness even in the seawater temperature range of -40 to 50 캜.

The hot-melt composition has a viscosity of 1,000 to 2,500 cps / 150 ° C and a softening point of 50 to 110 ° C, which is excellent in sprayability and is convenient to use.

The hot-melt composition is durable to ultraviolet rays in which the adhesive property is continuously maintained even when direct sunlight is directly applied.

The hot melt is applied to the styrofoam 11 or the polyolefin sheet 30 in a temperature range of 120 to 170 캜 in a spraying manner and then the styrofoam 11 is wrapped with the polyolefin sheet 30, And they are thermally fused in the individual to be integrally bonded.

The method for producing the hot-melt composition for bonding the sea surface buoy cover of the present invention is not particularly limited and may be produced by any of the methods used in the related art.

Hereinafter, the present invention will be described in detail with reference to a block diagram of a preferred embodiment of the manufacturing method and the description of FIG.

end. Buoy formation stage

The buoys 10 made of the foamed styropores 11 are molded into a mold in any one of the hollow interior or the integral one.

I. Hot melt application step

And has a viscosity of 1,000 to 2,500 cps / 150 캜 and a softening point of 50 to 110 캜, and is used in an amount of 3 to 20% by weight of any one of paraffinic and polyethylene waxes, ethylene vinyl acetate and amorphous polyalphaolefin 20 to 70% by weight of any one of an amorphous poly alpha olefin polymer and a styrene-based thermoplastic rubber (SBS SIS SEBS), 20 to 50% by weight of any one of petroleum and rosin ester-based tackifying resins, A hot melt 20 made of a composition containing 3 to 30% by weight of any one of the butenic softeners and 0.5 to 5% by weight of an antioxidant is manufactured and the surface of the styrofoam 11 of the buoy 10 or the inside of the polyolefin sheet 30 In a range of 120 to 170 캜 by a spraying method.

All. The polyolefin sheet fusion step

The hot melt 20 is placed between the polyolefin sheets 30 on the surface of the styrofoil 11 so as to be positioned therebetween, and then adhered so as to be integrally formed by heat fusion in the heat seal member in the temperature range of 100 to 150 캜.

The present invention relates to a polyolefin sheet having a polyolefin sheet coated on a surface of a styrofoil and wrapped around the polyolefin sheet in a predetermined temperature range and then adhered to each other in a predetermined temperature range, It is an object of the present invention to provide a very useful invention which is durability to ultraviolet rays which are continuously maintained and which provides buoys in which seaweed and shellfish can not be attached.

10: buoy mold 11: adhesive side
12: space 13: home
20: Primer 30: Nonwoven and reinforcing fibers
100: Appendix 110: Crosslinked polyethylene heat shrink film

Claims (3)

delete delete A buoy forming step of molding the buoys 10 made of the styropores 11 which are foam-molded in the form of either one of hollows or integrally filled with a mold;
And has a viscosity of 1,000 to 2,500 cps / 150 캜 and a softening point of 50 to 110 캜, and is used in an amount of 3 to 20% by weight of any one of paraffinic and polyethylene waxes, ethylene vinyl acetate and amorphous polyalphaolefin 20 to 70% by weight of any one of amorphous poly alpha olefin polymers, 20 to 50% by weight of any one of petroleum based and rosin ester based tackifying resins, 3 to 30% by weight of any one of paraffin type and polybutene type softening agents By weight, and 0.5 to 5% by weight of an antioxidant;
A hot melt 20 having a viscosity of 1,000 to 2,500 cps / 150 ° C. and a softening point of 50 to 110 ° C. is prepared and the surface of the styrofoil 11 of the buoy 10 or the inside of the polyolefin sheet 30 A hot-melt applying step of applying a hot-melt method to a part in a range of 120 to 170 캜 by spraying; And
It is impossible to adhere seaweeds and shellfishes to the surface of the styrofoam 11 in the seawater temperature range of -40 to 50 占 폚 and to prevent the seaweeds and shellfish from adhering to the surface of the polyolefin sheet 30, And a polyolefin sheet melt-bonding step of wrapping the polyolefin sheet 20 in an integrated manner by thermally fusing it in a temperature range of 100 to 150 < 0 > C, A method of manufacturing a buoy used.

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