KR20230174136A - Magnetic reinforced plate for electronic devices using recycle material and method for preapring the same - Google Patents

Abstract

The present invention includes the steps of forming a through hole or insertion hole in a support plate; Inserting a magnet module into the through hole or insertion hole; and arranging an upper plate and a lower plate on the upper and lower surfaces of the support plate into which the magnet module is inserted and heat-compressing them, respectively, wherein the support plate includes waste plastic. . According to the present invention, it can be manufactured by recycling industrial waste plastic and waste fiber, so it is not only environmentally friendly but also has the effect of securing economic feasibility.

Description

Magnetic reinforcement plate using recycled materials and manufacturing method thereof {MAGNETIC REINFORCED PLATE FOR ELECTRONIC DEVICES USING RECYCLE MATERIAL AND METHOD FOR PREAPRING THE SAME}

The present invention relates to a magnetic reinforcement plate and a manufacturing method thereof, and more specifically, to a magnetic reinforcement plate for eco-friendly electronic devices using recycled materials and a manufacturing method thereof.

Recently, with the rapid development of information and communication technology, various portable terminals, including smartphones and tablet PCs, are becoming widely available, and the demand for protective cases to prevent damage or scratches to portable terminals is also increasing. In addition, the magnetic reinforcement plate is inserted into the protective case to function as a reinforcement member and is used to magnetically attach between the folded cover surfaces when the cover is folded.

These protective cases are manufactured from various materials such as synthetic leather, natural leather, and epoxy resin. For example, Patent Document 1 discloses a mobile phone case including a lower case and an upper case made of different materials. The price of epoxy resin, which has recently been widely used as a material for magnetic reinforcement plates, increased by 109.4% compared to the same period in 2020 to $5,039 per ton in November 2021, reaching the highest level since 1990, while supply disruptions in offshore regions continue. , the rise in raw material prices is driving the rise in selling prices, and given that related demand is increasing, continued price rises are expected.

Meanwhile, with industrial development, various industrial wastes are being generated. Plastic has become an indispensable product in daily life due to its ease of processing and low price. More than 10 million tons of plastic waste is generated annually, but less than half is recycled, and the rest is landfilled or incinerated. Accordingly, waste plastic continues to increase, and as regulations to reduce the amount of waste plastic are strengthened, interest in the disposal of waste plastic is also increasing. Waste plastics are currently being recycled for limited purposes, such as being terminally processed and landfilled, incinerated as fuel and recycled, or washed and mixed with new materials, and the recycling rate is very low at around 25%.

In addition, waste fibers, which are industrial wastes generated from weaving or dyeing processes, are difficult to recycle if they are not classified according to color or type, and a large amount of waste fibers are incinerated even though they are in good condition and are not contaminated.

KR 20-0465394 Y1

The present invention was developed in consideration of the above circumstances, and aims to provide a method for manufacturing a magnetic reinforcement plate using waste plastic and waste fiber, which are industrial wastes, and a magnetic reinforcement plate made of eco-friendly material manufactured according to the method.

According to one aspect of the present invention, forming a through hole or insertion hole in a support plate; Inserting a magnet module into the through hole or insertion hole; And a step of placing an upper plate and a lower plate on the upper and lower surfaces of the support plate into which the magnet module is inserted and heat-compressing them, respectively, wherein the support plate includes waste plastic. A method of manufacturing a magnetic reinforcement plate is provided. .

The waste plastic may include one or more types selected from the group consisting of polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl.

The support plate may further include waste fiber.

The waste fiber may include one or more selected from the group consisting of polyethylene phthalate, polyester, polypropylene, nylon, and cellulose.

The support plate includes the steps of crushing waste plastic to produce pellet chips; Extruding and spinning the pellet chips to produce yarn fibers; Manufacturing the raw fibers into a fabric in the form of a laminated sheet; Rolling the laminated sheet-shaped fabric; and thermally compressing the rolled fabric.

The step of manufacturing the yarn fiber may include additionally adding fiber raw materials.

The fiber raw material may include one or more selected from the group consisting of polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl.

The weight ratio of the yarn fiber derived from waste plastic and the fiber raw material included in the yarn fiber may be 1:1 to 3:7.

The fineness of the fiber raw material may be 5 to 10 denier.

According to another aspect of the invention, a support plate having a through hole or an insertion hole formed thereon; A magnet module inserted into the through hole or insertion hole; and an upper plate and a lower plate formed on the upper and lower surfaces of the support plate into which the magnet module is inserted, wherein the support plate includes waste plastic.

The density of the support plate may be 0.6 to 1.8.

The tensile strength of the support plate may be 50Mpa or more.

The magnet module may include a magnet and a magnetic shielding plate covering at least one surface of the magnet.

The magnetic reinforcement plate according to one embodiment of the present invention can be manufactured by recycling industrial waste plastics and waste fibers, so it is not only environmentally friendly, but also has the effect of reducing raw material costs and securing economic feasibility.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be explained by those who have ordinary knowledge in the technical field to which this disclosure pertains from the description of the claims (referred to as a “person skilled in the art”). can be clearly understood.

Embodiments of the present invention will be described with reference to the accompanying drawings described below, in which like reference numerals represent like elements, but are not limited thereto.
Figure 1 shows a vertical cross-sectional view of a magnetic reinforcement plate according to an embodiment of the present invention.
Figure 2 schematically shows an exploded perspective view of a magnetic reinforcement plate according to an embodiment of the present invention.
Figure 3 is a schematic diagram schematically showing heat compression of recycled materials using a jig according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described clearly and in detail so that those skilled in the art can easily implement the present invention. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later.

Terms or words used in this specification and claims should not be construed as limited to their common or dictionary meanings, and the inventor may appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is.

In this specification, expressions such as “comprising” should be understood as open-ended terms that imply the possibility of including other embodiments.

As used herein, “preferred” and “preferably” refer to embodiments of the invention that may provide certain advantages under certain circumstances. However, under the same or different circumstances, other embodiments may also be preferred. Additionally, mention of one or more preferred embodiments does not mean that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

The present invention relates to a magnetic reinforcement plate and a manufacturing method thereof, and more specifically, to a magnetic reinforcement plate for electronic devices using eco-friendly materials and a manufacturing method thereof. Figure 1 shows a magnetic reinforcement plate according to an embodiment of the present invention. It shows a vertical cross-sectional view, and Figure 2 schematically shows an exploded perspective view of a magnetic reinforcement plate according to an embodiment of the present invention. Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 and 2.

According to one aspect of the present invention, forming a through hole or insertion hole in the support plate 100; Inserting a magnet module 120 into the through hole or insertion hole; And placing an upper plate 140 and a lower plate 160 on the upper and lower surfaces of the support plate 100 into which the magnet module 120 is inserted and heat-compressing the support plate 100. Provides a method for manufacturing a magnetic reinforcement plate (1000) containing waste plastic.

According to a preferred embodiment of the present invention, the support plate 100 may include waste plastic. The waste plastic may include by-products and wastes generated from daily life or industry, and is not particularly limited, but the waste plastic includes polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl. It may contain one or more types selected from the group consisting of, and may preferably contain polyethylene phthalate.

Additionally, the support plate 100 may additionally include waste fibers. The waste fiber can also be understood as a concept that includes all waste fiber discharged after use, regardless of whether it is household or industrial waste. Although not specifically limited, the waste fiber includes polyethylene phthalate, polyester, polypropylene, It may contain one or more types selected from the group consisting of nylon and cellulose, and may preferably contain polyethylene phthalate.

As such, the present invention has an environmentally friendly advantage by recycling waste plastic and waste fiber as raw materials.

Meanwhile, the support plate 100 includes the steps of crushing waste plastic to produce pellet chips; Extruding and spinning the pellet chips to produce yarn; Manufacturing the yarn into a fabric in the form of a laminated sheet; Rolling the laminated sheet-shaped fabric; and thermally compressing the rolled fabric.

In more detail, a step of producing pellet chips is performed by crushing the collected waste plastic. The grinding size and the size of the pellet chips are not particularly limited, and may be ground by a method well known in the art, and may further include a washing process before grinding.

Thereafter, a step of manufacturing yarn fibers may be performed by melting, extruding, and spinning the pellet chips. Although not specifically limited, the spinning may be performed in a speed range of 200 to 4,000 m/min. In the case of spinnerets used during melt spinning, appropriately designed ones can be used at a level that can obtain the desired physical properties. Although not particularly limited, a spinneret designed so that the fineness of the yarn may range from 2 to 15 denier may be used.

According to another embodiment of the present invention, a step of additionally adding fiber raw materials may be performed in the step of manufacturing the yarn fiber. By adding new fiber raw materials to yarn fibers made from waste plastic, tensile strength and hardness properties can be improved.

Although not particularly limited, the new fiber raw material may include one or more selected from the group consisting of polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl.

Meanwhile, tensile strength and hardness characteristics can be adjusted by controlling the mixing ratio of waste plastic-derived fibers and new fiber raw materials contained in the yarn fibers. For example, the weight ratio of waste plastic-derived fiber and new fiber raw material contained in the yarn fiber may be 1:1 to 3:7, and if high tensile strength is required, the content of waste plastic-derived fiber is reduced and new fiber raw material is used. The content can be increased. In this way, the mixing ratio can be appropriately controlled according to the required specifications of the product.

In addition, the fineness of the fiber raw material can be controlled to improve the tensile strength, and although it is not particularly limited, the fineness of the fiber raw material may be 5 to 10 denier.

According to a preferred embodiment of the present invention, the density of the support plate 100 may be 0.4 to 1.8. Additionally, according to a preferred embodiment of the present invention, the tensile strength of the support plate 100 may be 50 Mpa or more, and may be 50 to 100 Mpa. According to the present invention, it is possible to provide a support plate 100 that satisfies the physical properties that enable mounting while manufacturing an eco-friendly material by recycling waste plastic and waste fiber.

Meanwhile, the support plate 100 containing recycled material manufactured according to the above process may additionally include a heat compression step to achieve a predetermined thickness depending on the intended use. Although not specifically limited, as shown in FIG. 3 of the present invention, the step of thermocompressing the support plate 100 containing a recycled material to a predetermined thickness involves attaching the jig 200 of the desired thickness to the support plate 100. ) can be implemented by placing it on the side and heat-compressing it from the top or bottom.

Meanwhile, the thickness of the support plate 100 is not particularly limited and may be appropriately changed depending on the intended use.

After obtaining the support plate 100, a step of forming a through hole or an insertion hole in the support plate 100 may be performed. The above step can be applied without limitation as long as it is a process commonly applied in the industry, such as CNC machining or PRESS punching, and the size and number of through holes or insertion holes can be appropriately selected as needed.

Next, the step of inserting the magnet module 120 into the through hole or insertion hole may be performed. The magnet module 120 may be composed of only magnets, but may also include a magnetic shielding plate that covers at least one side of the magnet. By providing the magnetic shielding plate, the effect of concentrating magnetic force in a predetermined direction can be achieved. The magnetic shielding plate may be made of a ferromagnetic metal with high magnetic properties, and for example, SPCC, EGI, GI, tin steel plate, etc. may be used.

Thereafter, the step of placing the upper plate 140 and the lower plate 160 on the upper and lower surfaces of the support plate 100 into which the magnet module 120 is inserted, respectively, and heat-compressing them may be performed. At this time, the upper plate 140 and lower plate 160 may be epoxy resin or prepreg containing epoxy resin. According to the above process, the magnet module 120 inserted into the support plate 100 may be accommodated between the upper and lower cover plates without being directly exposed to the outside.

According to another aspect of the present invention, a support plate 100 having a through hole or an insertion hole formed thereon; A magnet module 120 inserted into the through hole or insertion hole; and an upper plate 140 and a lower plate 160 formed on the upper and lower surfaces of the support plate 100 into which the magnet module 120 is inserted, and the support plate 100 includes waste plastic and waste fiber. A magnetic reinforcement plate 1000 is provided.

The magnetic reinforcement plate according to the present invention can be manufactured by the above-described process, and thus, not only can waste plastics and waste fibers be recycled, but it has the advantage of securing economic efficiency by reducing the price of consumed raw materials. there is.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and can be implemented with various modifications within the scope of the patent claims, detailed description of the invention, and the accompanying drawings, and this also applies to this invention. It is natural that it falls within the scope of the invention.

Accordingly, the actual scope of rights of the present invention will be defined by the attached patent claims and their equivalents.

100: Support plate containing recycled material
120: Magnet module
140: upper plate
160: lower plate
160: jig
1000: Magnetic reinforcement plate

Claims (13)

Forming a through hole or insertion hole in the support plate;
Inserting a magnet module into the through hole or insertion hole; and
Comprising: placing an upper plate and a lower plate on the upper and lower surfaces of the support plate into which the magnet module is inserted and heat-compressing them,
The support plate is a method of manufacturing a magnetic reinforcement plate containing waste plastic.
According to paragraph 1,
The waste plastic includes at least one selected from the group consisting of polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl.
According to paragraph 1,
The support plate is a method of manufacturing a magnetic reinforcement plate further comprising waste fiber.
According to paragraph 3,
A method of manufacturing a magnetic reinforcement plate, wherein the waste fiber includes at least one selected from the group consisting of polyethylene phthalate, polyester, polypropylene, nylon, and cellulose.
According to paragraph 1,
The support plate is
Grinding waste plastic to produce pellet chips;
Extruding and spinning the pellet chips to produce yarn fibers;
Manufacturing the yarn fibers into a fabric in the form of a laminated sheet;
Rolling the laminated sheet-shaped fabric; and
A method of manufacturing a magnetic reinforcement plate, including the step of thermally compressing the rolled fabric.
According to clause 5,
A method of manufacturing a magnetic reinforcement plate comprising the step of additionally adding fiber raw materials in the step of manufacturing the yarn fiber.
According to clause 6,
The fiber raw material includes at least one selected from the group consisting of polyethylene phthalate, polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene vinyl acetate, and vinyl.
According to clause 5,
A method of manufacturing a magnetic reinforcement plate wherein the zero weight ratio of the yarn fiber derived from waste plastic and the fiber raw material contained in the yarn fiber is 1:1 to 3:7.
According to clause 5,
A method of manufacturing a magnetic reinforcement plate wherein the fiber raw material has a fineness of 5 to 10 denier.
A support plate with a through hole or insertion hole formed thereon;
A magnet module inserted into the through hole or insertion hole; and
It includes an upper plate and a lower plate formed on the upper and lower surfaces of the support plate into which the magnet module is inserted,
The support plate is a magnetic reinforcement plate containing waste plastic.
According to clause 10,
A magnetic reinforcement plate wherein the density of the support plate is 0.6 to 1.8.
According to clause 10,
A magnetic reinforcement plate wherein the tensile strength of the support plate is 50Mpa or more.
According to clause 10,
The magnet module is a magnetic reinforcement plate including a magnet and a magnetic shielding plate covering at least one surface of the magnet.