KR102533268B1 - Reinforcement of Elastic packing Material and Method of Repacking Elastic Packaging Materials - Google Patents

Abstract

The present invention relates to a reinforcing material for an elastic packaging material and a repackaging method for an elastic packaging material for reinforcing the durability of an existing elastic packaging material having functions of shock absorption and drainage of rainwater. The reinforcing material of the elastic packaging material of the present invention is an elastic packaging portion attached to the bottom surface through a binder and cracked on the surface, a urethane sealing portion formed by polymerization of isocyanate and polyol and applied to the elastic packaging portion, and a wooden material. A plurality of fibers are arranged in an irregular shape and attached to the urethane sealing part, synthetic rubber produced by polymerizing styrene monomer and butadiene is pulverized to form a plurality of rubber chips, and a plurality of rubbers through a binder The first rubber chip reinforcement part where the chip is attached to the fiber net part, after making a polymer by chemically polymerizing ethylene and propylene, the copolymer prepared by adding diene and a set colorant is pulverized to and a second rubber chip reinforcement part formed of two color chips and having a plurality of color chips attached to an upper surface of the first rubber chip reinforcement part through a binder.
In addition, the repackaging method of the elastic packaging material of the present invention includes step (a) of cleaning the elastic packaging part with cracks on the surface, and (b) applying the urethane sealing part formed by the polymerization reaction of isocyanate and polyol to the crack of the elastic packing material part. step; (c) step of attaching a fiber net portion formed by arranging a plurality of fibers in an irregular shape to the upper surface of the urethane sealing portion; (d) step in which synthetic rubber prepared by polymerizing styrene monomer and butadiene is pulverized and the first rubber chip reinforcing part formed of a plurality of rubber chips is attached to the fiber net part through a binder; After making a polymer by chemically polymerizing ethylene and propylene, the copolymer prepared by adding diene and a set colorant is pulverized, and the second rubber chip reinforcement part formed of a plurality of color chips is removed through a binder. 1 (e) step of attaching to the upper surface of the rubber chip reinforcement part.

Description

Reinforcement of Elastic Packing Material and Method of Repacking Elastic Packaging Materials}

The present invention relates to a reinforcing material for reinforcing the durability of an existing elastic packaging material having a function of shock absorption and drainage of rainwater and a method of packaging the same.

Elastic paving materials are being installed for safety in playgrounds, park tracks, sidewalks on roads, and bicycle paths. The elastic packaging applied to the passageway has a function of absorbing shock and a function of quickly draining rainwater. Currently, elastic packaging materials with high drainage function and elastic packaging materials with high durability and fire resistance are being developed. For example, as disclosed in Korean Patent Registration No. 10-1515185, an elastic packaging material having excellent shock absorption, heat resistance, and anti-slip function has been developed.

In addition, currently, in addition to such elastic packaging materials, reinforcing materials used for reinforcement work of existing elastic packaging materials are also being actively developed. As described above, the elastic packaging material has excellent performance, and the price of the elastic packaging material and the installation cost of the floor surface are increasing in proportion to such performance.

Accordingly, consumers of elastic packaging materials are actively conducting research on product development and construction methods that can increase the shelf life of expensive elastic packaging materials.

Republic of Korea Patent Registration No. 10-1515185 (Announcement date: 2015.04.24)

The present invention is to solve the problem that occurs when a crack occurs in an existing elastic packaging material, by removing the existing elastic packaging material and then installing a new elastic packaging material.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the object to be solved, the reinforcing material of the elastic packaging material of the present invention is a reinforcing material attached to an elastic packaging portion having cracks on the surface, which is formed by polymerization of isocyanate and polyol and applied to the elastic packaging portion. A urethane sealing unit, a plurality of wood fibers are arranged in an irregular shape, and a fiber net unit attached to the urethane sealing unit; A first rubber chip reinforcement part in which synthetic rubber produced by polymerization of styrene monomer and butadiene is pulverized to form a plurality of rubber chips, and a plurality of rubber chips are attached to the fiber net part through a binder, and ethylene and propylene ( Propylene) is chemically polymerized to make a polymer, and then the hybrid polymer prepared by adding diene, monomer, and set pigments is pulverized to form a plurality of color chips, and a plurality of color chips are produced through a binder. It includes a second rubber chip reinforcement part attached to the upper surface of the first rubber chip reinforcement part, and the fiber net part undergoes a transesterification reaction by heating turpentine and ethylene glycol at 150 to 230 ° C. It is prepared by heating at 300 ° C., and a plurality of fibers have hydroxyl group (OH) properties and are mixed with 80 parts by weight of the fiber net part and 20 parts by weight of polyethylene terephthalate, cement paste mixed with 100 parts by weight of cement and 100 parts by weight of water It can be mixed and attached to the upper surface of the urethane sealing part.

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In addition, in the repackaging method of the elastic packaging material of the present invention for achieving the above object to be solved, in the method of repacking the elastic packaging portion with cracks on the surface, (a) cleaning the elastic packaging portion with cracks on the surface (b) applying the urethane sealing part formed by the polymerization reaction of isocyanate and polyol to the cracks of the elastic packaging material, (c) the urethane sealing part of the fiber net part in which a plurality of wood fibers are irregularly arranged (d) synthetic rubber prepared by polymerizing styrene monomer and butadiene is pulverized to mix the first rubber chip reinforcement part formed of a plurality of rubber chips with a binder, and then attaching to the fiber net part, ( e) A second rubber chip reinforcement part (50 ) with a binder, and then attaching it to the upper surface of the first rubber chip reinforcement part, and the fiber net part heats terephthane and ethylene glycol at 150 to 230 ° C to transesterify them, followed by 1 torr ) It is prepared by heating at 270 ~ 300 ℃ below, and a plurality of fibers have a hydroxyl group (OH) property and are mixed with 80 parts by weight of the fiber net part and 20 parts by weight of polyethylene terephthalate, and 100 parts by weight of cement and 100 parts by weight of water It can be mixed with the mixed cement paste and attached to the upper surface of the urethane sealing part.

The present invention is packaged in an existing elastic packaging material to improve the durability of the existing elastic packaging material by filling cracks or grooves generated in the existing elastic packaging material. In particular, the present invention increases the resistance to impact transmitted from the outside and the resistance to freezing and thawing to prevent breakage of the elastic packaging material and increase its useful life. In addition, the present invention minimizes deterioration even when exposed to ultraviolet rays or heat, so that cracks and elastic packaging materials are not lifted.

As such, the present invention increases the lifespan of expensive elastic packaging materials, and even if cracks occur in the elastic packaging materials, the existing elastic packaging materials are not removed and repacked and used, thereby reducing installation costs for repackaging the elastic packaging materials.

1 is a view showing the sequence of a method of repacking a reinforcing material in an elastic packaging material of the present invention.
2 is a view showing a reinforcing material applied to an elastic packaging material according to an embodiment of the present invention.
3 is a cross-sectional view of the elastic packaging material of FIG. 2 and a reinforcing material applied to the elastic packaging material taken along line II'.
4 is an exploded perspective view of the elastic packaging material of FIG. 3 and a reinforcing material of the elastic packaging material.
5 is a view showing a reinforcing material applied to an elastic packaging material according to another embodiment of the present invention.

Advantages and features of the present invention and a system for achieving them will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only this embodiment makes the disclosure of the present invention complete, and those skilled in the art in the art to which the present invention belongs It is provided to fully inform the person of the scope of the invention.

The claims of the present invention can be defined by the claims. In addition, like reference numerals refer to like elements throughout the specification.

The repackaging method of the elastic packaging material of the present invention is a construction method in which the elastic packaging material of the present invention is wrapped with a reinforcing material. That is, the repackaging method of the elastic packaging material of the present invention is the same as the repackaging method of the elastic packaging material. The subject of each step described in the repackaging method of the elastic packaging material of the present invention may be a component of the reinforcing material of the elastic packaging material.

In order to make the description of the reinforcing material of the elastic packaging material of the present invention concise and clear, after explaining the process of using the reinforcing material of the elastic packaging material through the repackaging method of the elastic packaging material of the present invention, based on this, the reinforcement material of the elastic packaging material explain in detail.

Hereinafter, with reference to FIG. 1, the repackaging method of the elastic packaging material of the present invention will be described in detail.

1 is a view showing the sequence of a method of repacking a reinforcing material in an elastic packaging material of the present invention.

The repackaging method of the elastic packing material of the present invention proceeds to step (a) of cleaning the surface of the elastic packing part 10 having cracks 101. After step (a), if necessary, based on the part where the crack 101 is located, a distance spaced at a certain interval, for example, 5 cm apart, drawing a figure (a-1) step, digging out the drawn figure (a-2) It may proceed in stages. At this time, the groove 102 formed in the elastic packing part 10 may be formed in a cone shape inclined from the upper side of the elastic packing part 10 to the lower side by the operator. After the step (a) or step (a-1), the urethane sealing part 20 is applied to the crack 101 of the elastic packaging material 10 to fill the crack 101, which proceeds to step (b). Thereafter, the fiber net part 30 is attached to the upper surface of the urethane sealing part 20, which proceeds to step (c). At this time, polyethylene terephthalate 25 is interposed between the upper surface of the urethane sealing part 20 and the lower surface of the fiber netting part 30 to improve the waterproof function and adhesion of the urethane sealing part 20 . After step (c), the fiber net portion 30 having a plurality of fibers having a hydroxyl group (OH) is mixed with a cement pool mixed with 100 parts by weight of cement and 100 parts by weight of water, and attached to the upper surface of the urethane sealing part 20 It can be in step (c-1). And after step (c) or step (c-1), step (d) in which the first rubber chip reinforcement part 40 formed of a plurality of rubber chips is attached to the fiber net part 30 through the binder 105. After that, the multipolymer having the color is pulverized and the second rubber chip reinforcement part 50 formed of a plurality of color chips is attached to the upper surface of the first rubber chip reinforcement part 40 through the binder 15 (e ) step.

As described above, the repackaging method of the elastic packaging material of the present invention, which proceeds in steps (a) to (e), firmly fills the cracks generated in the existing elastic packaging material so that the cracked elastic packaging material is no longer damaged. can avoid The reinforcing material of the elastic packaging material, which is repacked in the cracks generated in the existing elastic packaging material, can have resistance to impact transmitted from the outside through EPDM and polyethylene terephthalate 25 and high durability against freezing and thawing.

Hereinafter, with reference to FIGS. 2 to 5 , a reinforcing material applied to an elastic packaging material according to an embodiment of the present invention and a reinforcing material applied to an elastic packaging material according to another embodiment of the present invention will be described in detail.

2 is a view showing a reinforcing material applied to the elastic packaging material, and FIG. 3 is a cross-sectional view of the elastic packaging material of FIG. 2 and the reinforcing material applied to the elastic packaging material taken along the line II'. 4 is an exploded perspective view of the elastic packaging material of FIG. 3 and a reinforcing material of the elastic packaging material. And Figure 5 is a view showing a reinforcing material applied to the elastic packaging material according to another embodiment of the present invention.

The reinforcing material 1 applied to the elastic packaging material reinforces durability by repacking the elastic packaging material attached to the bottom surface (A). The second rubber chip reinforcing part 50 and the first rubber chip reinforcing part 40 of the reinforcing material 1 applied to the elastic packaging material are minimized and do not crack even when exposed to ultraviolet rays or heat. In addition, the urethane sealing part 20, the fiber net part 30, the first rubber chip reinforcement part 40 and the second rubber chip reinforcement part 50 are firmly attached to each other by a binder, and the urethane sealing part by the binder (20) is firmly attached to the elastic packaging part (10) and does not lift.

The reinforcing material 1 applied to the elastic packaging material includes the elastic packaging part 10, the urethane sealing part 20, the fiber netting part 30, the first rubber chip reinforcement part 40 and the second rubber chip reinforcement part 50 ).

The elastic packing unit 10 becomes a mat having elasticity installed on the floor surface A of playgrounds and tracks of parks. The elastic packaging part 10 is formed of a rubber chip and attached to the bottom surface A to which the primer is applied. At this time, the primer applied to the bottom surface (A) becomes a urethane-based paint and can be cured by reaction with moisture in the air. A urethane sealing part 20 may be applied to the upper surface of the elastic packing part 10 .

The urethane sealing part 20 is a mixture formed by polymerization of isocyanate and polyol. The urethane sealing part 20 is applied as it is to the elastic packing part 20 whose upper surface is cleaned and can cover cracks. At this time, the urethane sealing part 20 is formed in a liquid form and penetrates into the crack, and the part penetrated into the crack and the part exposed to one surface of the elastic packing part 10 are cured together.

The fiber net portion 30 may be applied to the upper surface of the urethane sealing portion 20 . At this time, the fiber net portion 30 may be applied to the urethane sealing portion 20 after the urethane sealing portion 20 is fully cured. The fiber net portion 30 may be attached to the urethane sealing portion 20 by arranging a plurality of fibers made of wood in an irregular shape. In particular, the fiber net portion 30 may be formed of a superconcell produced by SS Industry Co., Ltd., which is currently sold on the market. At this time, the fiber net part 30 has a plurality of fibers having a hydroxyl group (OH) property and can be mixed with a cement paste in which 100 parts by weight of cement and 100 parts by weight of water are mixed. In particular, the fiber net portion 30 is well dispersed as a hydroxyl group (OH) and has high adhesion strength with cement paste. The fiber net portion 30 has a large number of fibers and is highly effective in suppressing cracking. In addition, polyethylene terephthalate 25 may be interposed between the upper surface of the urethane sealing unit 20 and the lower surface of the fiber net unit 30 . Here, the polyethylene terephthalate (25) may be a mixture prepared by heating terephthalate and ethylene glycol at 150 to 230 ° C for transesterification and then heating at 270 to 300 ° C under 1 torr. . Such polyethylene terephthalate 25 can be mixed with the fiber netting part 30 to improve the waterproof function of the fiber netting part 30, and the fiber netting part 30 is more strongly attached to the lower surface of the urethane sealing part 20. can be attached.

The first rubber chip reinforcing part 40 is formed by pulverizing synthetic rubber prepared by polymerizing styrene monomer and butadiene to form a plurality of rubber chips and a member in which the plurality of rubber chips are mixed as a binder. The first rubber chip reinforcement part 40 may be attached to the fiber net part 30 .

The second rubber chip reinforcement part 50 chemically polymerizes ethylene and propylene to make a polymer, and then uses synthetic rubber made of a copolymer obtained by adding diene and monomer and a set colorant. Added to the prepared copolymer. Here, the second rubber chip strong part 50 may be pulverized to form a plurality of color chips. That is, the second rubber chip reinforcing part 50 becomes pulverized rubber after coloring is added to synthetic rubber of EPDM. The second rubber chip reinforcement part 50 is attached to the upper surface of the first rubber chip reinforcement part 40 through a binder.

Here, the binder includes 40 to 60 parts by weight of isocyanate, 30 to 50 parts by weight of polyol, 2 to 10 parts by weight of a chain extender, and 1 to 5 parts by weight of a crosslinking agent such as trimethylolpropane or glycerine. includes wealth The binder may be prepared by mixing these components and then reacting at 80° C. to 100° C. for 4 to 10 hours.

Hereinafter, the present invention will be described in detail through the following examples. However, the present invention will be specifically described through comparative examples and examples that can show the characteristics of the present invention so that the description of the present invention can be concise and clear. The embodiments of the present invention as described above do not define the present invention.

Components constituting the comparative example are as follows.

[Comparative example 1]

Comparative Example 1 becomes a conventional elastic packing part.

[Comparative example 2]

It includes an elastic packing part, a urethane sealing part, a first rubber chip reinforcement part, and a second rubber chip reinforcement part as components. That is, the comparative example including the components described above becomes a reinforcing material without a superconcell among the components constituting the present invention.

An example of manufacturing such a comparative example is as follows.

[Preparation of Comparative Example 2]

Pour a binder on the clean floor and attach the elastic packing part with a thickness of 3cm. Thereafter, a harsh environment is artificially created to create cracks on the surface of the elastic packing part. A first rubber chip, which is a plurality of rubber chips manufactured by applying a urethane sealing part formed by polymerization of isocyanate and polyol to cracks in the carbon packaging material, and crushing synthetic rubber manufactured by polymerizing styrene monomer and butadiene on the urethane sealing part. The reinforcement part is applied. Then, after making a polymer by chemically polymerizing ethylene and propylene on the upper surface of the first rubber chip reinforcement part, the copolymer prepared by adding diene and a set pigment is pulverized to form a plurality of color chips, the second Comparative Example 1 was prepared by applying the rubber chip reinforcement part.

[Experiment Example 1]

It includes an elastic packing part, a urethane sealing part, a fiber net part, a first rubber chip reinforcement part, and a second rubber chip reinforcement part as components.

[Preparation of Experimental Example 1]

Pour a binder on the clean floor and attach the elastic packing part with a thickness of 3cm. Thereafter, a harsh environment is artificially created to create cracks on the surface of the elastic packing part. The urethane sealing part formed by the polymerization reaction of isocyanate and polyol is applied to the cracks of the carbon packaging material part. Thereafter, a fiber net portion 30 in which a plurality of fibers are arranged in an irregular shape is applied to the urethane sealing portion 20, and the upper surface of the fiber net portion is prepared by polymerizing polyethylene terephthalate with styrene monomer and butadiene. A first rubber chip reinforcement part, which is a plurality of rubber chips manufactured by crushing synthetic rubber, is applied. Then, after making a polymer by chemically polymerizing ethylene and propylene on the upper surface of the first rubber chip reinforcement part, the copolymer prepared by adding diene and a set pigment is pulverized to form a plurality of color chips, the second Experimental Example 1 was prepared by applying the rubber chip reinforcement part.

[Experimental Example 2]

It includes an elastic packing part, a urethane sealing part, polyethylene terephthalate, a fiber netting part, a first rubber chip reinforcement part, and a second rubber chip reinforcement part as components. Experimental Example 2 like this becomes a reinforcing material for the elastic packaging material of another embodiment of the present invention. In this reinforcing material, the mixture of the fiber net portion and polyethylene terephthalate includes 80 parts by weight of the fiber net portion and 20 parts by weight of polyethylene terephthalate.

[Preparation of Experimental Example 2]

Pour a binder on the clean floor and attach the elastic packing part with a thickness of 3cm. Thereafter, a harsh environment is artificially created to create cracks on the surface of the elastic packing part. A urethane sealing part formed by a polymerization reaction of isocyanate and polyol is applied to the cracks of the carbon packing material part, and a fiber netting part 30 in which a plurality of fibers are arranged in an irregular shape is applied to the urethane sealing part 20. Thereafter, on the upper surface of the urethane sealing part, terephthalate and ethylene glycol were heated at 150 to 230 ° C. to transesterify, and then polyethylene terephthalate prepared by heating at 270 to 300 ° C. at 1 torr or less was applied. , A first rubber chip reinforcement part, which is a plurality of rubber chips manufactured by crushing synthetic rubber prepared by polymerizing polyethylene terephthalate with styrene monomer and butadiene, is attached. Then, after making a polymer by chemically polymerizing ethylene and propylene on the upper surface of the first rubber chip reinforcement part, the copolymer prepared by adding diene and a set pigment is pulverized to form a plurality of color chips, the second Experimental Example 2 was prepared by applying the rubber chip reinforcement part.

As described above, Comparative Examples and Experimental Examples 1 and 2 were evaluated by the following method.

1. Make a concrete floor in the shape of a rectangular parallelepiped with a width of 50 cm, a length of 50 cm and a height of 10 cm.

2. Comparative Example 1, Comparative Example 2, and Experimental Example 1 were formed with the structure shown in FIG. 2 and Experimental Example 2 with the structure shown in FIG. 2 . Thereafter, after leaving it at -20 ° C for 12 hours, leaving it at 70 ° C for 12 hours was repeated as one cycle, and an experiment was conducted in which water was sprayed at 15 mm per hour for every 5 cycles. Here, in Experimental Example 1, an elastic packing part measuring 40 cm wide and 40 cm long is attached to a bottom surface of 50 cm wide and 50 cm long, and a urethane sealing part having a size of 30 cm wide and 30 cm long is attached to the elastic packing part, and a 20 cm wide, A structure in which a fiber net part measuring 20 cm in length is attached, a first rubber chip reinforcement part with a size of 15 cm in width and a length of 15 cm is attached on the fiber net part, and a second rubber chip reinforcement part in size of 10 cm in width and 10 cm in length is attached on the first rubber chip reinforcement part. is formed with In Experimental Example 2, an elastic packing part measuring 40 cm wide and 40 cm long was attached to a bottom surface of 50 cm wide and 50 cm long, and a urethane sealing part having a size of 30 cm wide and 30 cm long was attached to the elastic packing part, and a urethane sealing part having a width of 25 cm and a vertical size was attached. Attach polyethylene terephthalate with a size of 25 cm, attach a fiber net part with a size of 20 cm in width and 20 cm in length on the polyethylene terephthalate, attach the first rubber chip reinforcement part with a size of 15 cm in width and 15 cm in length on the fiber net part, and attach the first rubber chip reinforcement part It is formed in a structure in which a second rubber chip reinforcement part is attached to a size of 10 cm in width and 10 cm in length.

3-1. After curing Comparative Examples, Experimental Example 1 and Experimental Example 2 at room temperature of 25° C. for 7 days, the tensile strength is measured through a Universal Test Machine (UTM).

[Table 1]

Referring to Table 1, Comparative Example 1 and Comparative Example 2, and Experimental Example 1 and Experimental Example 2 of the present invention were left at -20 ° C for 12 hours, then left at 70 ° C for 12 hours, 30 times in one cycle, 50 When repeating times, 70 times and 100 times, cracks of the sizes shown in Table 1 are formed. More specifically, when the above-described harsh conditions were repeated 30 times, no cracks, that is, cracks, were generated in Comparative Example 1, Comparative Example 2, Experimental Example 1, and Experimental Example 2. When the above-mentioned harsh conditions were repeated 50 times, a crack with a length of 2 cm was generated in Comparative Example 1 and a crack with a length of 1 cm was generated in Comparative Example 2. And, in Experimental Example 1 and Experimental Example 2, cracks did not occur. And when the above-mentioned harsh conditions were repeated 70 times, a crack with a length of 3 cm was generated in Comparative Example 1 and a crack with a length of 2 cm was generated in Comparative Example 2. In Experimental Example 1, a crack with a length of 1 cm was generated, and in Experimental Example 2, no crack was generated. And when the above-mentioned harsh conditions were repeated 100 times, a crack with a length of 5 cm was generated in Comparative Example 1, and a crack with a length of 3 cm was generated in Comparative Example 2. In Experimental Example 1, a crack with a length of 2 cm was formed, and in Experimental Example 1, a crack with a length of 1 cm was generated.

As can be seen from Table 1, in Comparative Example 1 and Comparative Example 2, it can be confirmed that cracks occur when the harsh environment is repeated 50 times. In addition, it can be confirmed that Experimental Example 1 and Experimental Example 2 do not easily generate cracks in harsh environments, compared to Comparative Examples 1 and 2.

When Comparative Example 2 and Experimental Example 1 were compared, it was confirmed that the mixture of the urethane sealing part and the fiber mesh part had higher durability than the urethane sealing part and no cracks occurred. In addition, the mixture of the urethane sealing part and the fiber netting part is more strongly attached to the elastic packing part than the urethane sealing part, so that less lifting occurs. The height of the lifting occurs in the elastic packing part as much as it is proportional to the length of the crack generated on the above-mentioned surface. In addition, when polyethylene terephthalate is interposed between the upper surface of the urethane sealing part 20 and the lower surface of the fiber net part 30, it has high durability compared to other reinforcing materials, that is, Experimental Example 1, Comparative Example 2, and Comparative Example 1, so that cracks do not occur. It is confirmed that this does not occur. As such, when polyethylene terephthalate is interposed between the upper surface of the urethane sealing part 20 and the lower surface of the fiber netting part 30, the elastic packing part compared to other reinforcing materials, that is, Experimental Example 1, Comparative Example 2, and Comparative Example 1 It was strongly attached and no lifting occurred.

In addition, an experiment was conducted to compare the tensile strength between the fiber net portion used in the reinforcing materials of Experimental Example 1 and Experimental Example 2 and the mixture in which cement paste was mixed with the fiber net portion.

First, an experiment was conducted on the curing degree of the fiber netting part and the mixture of the fiber netting part and the cement paste over time of 3 hours, 10 hours, 17 hours, and 24 hours.

[Table 2]

Referring to Table 2, the fiber netting part and the mixture of the fiber netting part and the cement paste were cured at room temperature of 25°C. At this time, the hardness was measured with a durometer.

First, after the fiber netting part 30 and the mixture of the fiber netting part 30 and the cement paste were applied to the urethane sealing part, when 3 hours had elapsed, the fiber netting part was measured as 20 N/mm ² , and the fiber netting part (30) and cement paste at a mixture of 40 N/mm ² . After 10 hours had elapsed, the fiber net portion was measured as 60 N/mm ² , and the mixture of the fiber net portion 30 and the cement paste was measured as 70 N/mm ² . After 17 hours had elapsed, the fiber net portion was measured at 74 N/mm ² , and the mixture of the fiber net portion 30 and the cement paste was measured at 85 N/mm ² . After 24 hours had elapsed, the fiber net portion was measured at 87 N/mm ² , and the mixture of the fiber net portion 30 and the cement paste was measured at 95 N/mm ² .

As can be seen from Table 2, it can be confirmed that when the cement paste is mixed in the fiber netting part, it is more hardened over time than the fiber netting part. In this way, the mixture of cement glue in the fiber net part is located at the lower part and prevents the applied urethane sealing part or the urethane sealing part and polyethylene terephthalate from shrinking according to the temperature change. Make sure no cracks occur.

As such, the present invention, which has a high degree of curing and is not easily lifted from the bottom surface, is strongly attached to the conventional elastic packaging material, exhibits high durability in the attached state, and extends the useful life of the expensive elastic packaging material.

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

1: Reinforcement of elastic packaging material
10: elastic packaging
101: crack
20: urethane sealing part
25: polyethylene terephthalate
30: fiber net part
40: first rubber chip reinforcement part 50: second rubber chip reinforcement part
A: Bottom side

Claims (6)

In the reinforcing material attached to the elastic packaging portion 10 having cracks 101 on the surface,
A urethane sealing unit 20 formed by polymerization of isocyanate and polyol and applied to the elastic packaging unit 10;
A plurality of wood fibers are arranged in an irregular shape, and a fiber net portion 30 attached to the urethane sealing portion 20;
A first rubber chip reinforcement part 40 in which synthetic rubber prepared by polymerizing styrene monomer and butadiene is pulverized to form a plurality of rubber chips, and the plurality of rubber chips are attached to the fiber net part 30 through a binder; and
After making a polymer by chemically polymerizing ethylene and propylene, the copolymer prepared by adding a diene, a monomer, and a set colorant is pulverized to form a plurality of color chips, and a binder and a second rubber chip reinforcement part 50 to which a plurality of color chips are attached to the upper surface of the first rubber chip reinforcement part 40 through
The fiber net part 30,
After transesterification reaction by heating terephthane and ethylene glycol at 150 ~ 230 ℃, it is prepared by heating at 270 ~ 300 ℃ under 1 torr, so that a plurality of fibers have hydroxyl group (OH) properties
It is mixed with 80 parts by weight of the fiber net part 30 and 20 parts by weight of the polyethylene terephthalate 25,
A reinforcing material for an elastic packaging material that is attached to the upper surface of the urethane sealing part by being mixed with a cement pool mixed with 100 parts by weight of cement and 100 parts by weight of water. delete delete delete delete In the method of repacking the elastic packaging part 10 with cracks 101 on the surface,
(a) cleaning the elastic packaging part 10 having cracks 101 on the surface;
(b) applying the urethane sealing part 20 formed by polymerization of isocyanate and polyol to the crack 101 of the elastic packing material part 10;
(c) applying a fiber net portion 30 in which a plurality of wood fibers are arranged in an irregular shape to the urethane sealing portion 20;
(d) pulverizing synthetic rubber prepared by polymerizing styrene monomer and butadiene, mixing the first rubber chip reinforcing part 40 formed of a plurality of rubber chips with a binder, and then attaching the first rubber chip reinforcing part 40 to the fiber net part 30;
(e) A second rubber chip reinforcement part formed of a plurality of color chips by chemically polymerizing ethylene and propylene to form a polymer, and then pulverizing the copolymer prepared by adding diene and a set colorant ( 50) with a binder, and then attaching it to the upper surface of the first rubber chip reinforcement part 40,
The fiber net part 30,
After transesterification reaction by heating terephthane and ethylene glycol at 150 ~ 230 ℃, it is prepared by heating at 270 ~ 300 ℃ under 1 torr, so that a plurality of fibers have hydroxyl group (OH) properties
It is mixed with 80 parts by weight of the fiber net part 30 and 20 parts by weight of the polyethylene terephthalate 25,
A repacking method for elastic packaging material that is mixed with cement paste mixed with 100 parts by weight of cement and 100 parts by weight of water and attached to the upper surface of the urethane sealing part.

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