KR101324991B1 - Material of protection cover for portable device and a method for manufacturing the same - Google Patents

Abstract

The present invention relates to a material for a protection cover of a portable terminal and a manufacturing method thereof. A stiffening plate, such as a bake light panel, which is bonded between a pair of protection cover sheets, such as leather sheets, is subjected to a bonding process while a hot melt is coated on the stiffening plate through silk printing or roll printing, so that the bonding condition is overall uniform and delamination does not occur, thereby preventing exfoliation of the bonded portions. According to the manufacturing method, while the hot melt is coated on a surface of the stiffening plate, such as a bake light panel, through silk printing or roll printing, the leather sheets are simultaneously compressed, heated, and bonded on both surfaces of the stiffening plate. Therefore, the bonded surfaces are not easily exfoliated and delaminated, thereby continuously and completely protecting an LCD panel and the like of the portable terminal.

Description

Material for protective cover of mobile terminal and its manufacturing method {MATERIAL OF PROTECTION COVER FOR PORTABLE DEVICE AND A METHOD FOR MANUFACTURING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective cover material of a mobile terminal and a method of manufacturing the same. More particularly, the surface of a reinforcing plate such as a bakelite panel bonded to a pair of protective cover sheets, such as a leather sheet, is silked. By bonding them together in a state of being applied as hot melt by screen printing method or roll printing method, the bonding between the protective cover sheet and the reinforcement plate is performed uniformly as a whole and at the same time, the joint is not lifted. The present invention relates to a protective cover material of a portable terminal which is not peeled off and a manufacturing method thereof.

In recent years, mobile phones have been gradually replaced by smartphones, and most mobile terminals including mobile phones have been equipped with large touch screens.

In general, a touch screen is a screen designed to execute a command by recognizing a contact portion when a touch screen is directly touched using a finger or a ball pen-shaped touch pen.

As such, a portable terminal typically includes a circuit board inside the casing, and various outputs provided from the circuit board are output through the LCD liquid crystal panel on the front of the casing.

As described above, the LCD (Liquid Crystal Display) is an important means for understanding the interaction between the mobile phone and the user, is also an essential component for input and output, gradually increasing the quality of mobile terminals such as mobile phones and As the multifunctionalization is made, the size is also increasing proportionally.

However, the LCD as described above is very vulnerable to impact, and when the product is directly or indirectly impacted from the outside, the liquid crystal may burst or crack to perform its original function. Therefore, the expensive LCD should be replaced with an oil. Since the closing occurs, most mobile phones released in recent years are equipped with a separate protective member for protecting the LCD.

That is, since the portable terminal is used in a portable state, as it is exposed to external shocks unprotected, a method for protecting an LCD (Liquid Crystal Display) from external scratches or shocks has been applied.

In this regard, prior patents such as Korean Patent No. 614855 is known.

And, furthermore, a mobile terminal protective cover has been proposed, which adopts a protective cover formed by joining two leather sheets.

Fig. 1 is an exploded perspective view schematically showing the coupling and use of a protective cover bonded and treated with two sheets of leather sheets and a reinforcement plate disposed therebetween by a bond to a portable terminal such as a cellular phone, according to the prior art. 1 is a cross-sectional view schematically showing that the protective cover shown in FIG. 1 is bonded and processed by a bonding method.

As shown in Figures 1 to 2, the protective cover of the mobile terminal according to the prior art, bond the reinforcing plate 20, such as two leather seats 10 and bakelite panels disposed therebetween (bond) ) Was used as a protective cover.

Reference numeral 30 denotes a bond treatment layer.

However, according to the conventional mobile terminal protective cover configured as described above, the two leather sheets 10 are bonded by the bond treatment layer 30 formed on the surface of the reinforcing plate 20, two leather sheets In the process of bonding 10 and the reinforcing plate 20 disposed therebetween, not only the bonding is uniformly performed, but also the problem that the joined surface is partially lifted or peeled off.

Therefore, the protective cover is damaged due to the above-described poor bonding, thereby preventing the mobile phone from fully performing its role, thereby easily damaging the portable terminal including the liquid crystal display device.

1. Korean Patent Publication No. 0614855 "LCD protective cover for mobile phone with adhesive coating layer and its manufacturing method" (registration date: August 16, 2006)

Accordingly, an object of the present invention is to solve the above problems, the hot melt is applied to the surface of the reinforcement plate, such as bakelite plate disposed between the two leather sheets by silk screen printing or roll printing method By heating and bonding the leather sheet to both sides of the hot-melted reinforcing plate at the same time as pressing, the leather sheet and the reinforcing plate are uniformly bonded as a whole, and the joining surface is not easily peeled off, thus protecting the mobile terminal continuously and completely. The present invention provides a method for manufacturing a protective cover material for a portable terminal.

The protective cover material of the mobile terminal according to the present invention includes a reinforcement plate coated with hot melt on a region where both sides are set; And a pair of protective cover sheets laminated on both side surfaces of the reinforcement plate, the hot melt being coated on one side of the reinforcement plate to the same area as opposed to the set area of the reinforcement plate. The pair of protective cover sheets are respectively bonded to each other by heating at the same time pressing.

The hot melt may be coated by a silk screen printing method or a roll printing method, and the hot melt may be coated by a separate printing jig on the same set area of the reinforcement plate and the pair of protective cover sheets.

In addition, the protective cover material manufacturing method of the mobile terminal according to the present invention comprises the steps of coating the hot melt on both sides of the reinforcing plate; Coating a hot melt on one side of the two protective cover sheets; And heating and bonding the protective cover sheet to both surfaces of the reinforcing plate at the same time with pressing and applying the hot melt coated surfaces to each other.

In addition, the method for manufacturing a protective cover material for a mobile terminal according to the present invention, by rolling the edges of the two protective cover sheets heated and bonded to both sides of the reinforcing plate facing each other to face inward to the sewing machine in a folded state Stitching process; characterized in that further comprises.

The hot melt may be applied to the same set area of the reinforcement plate and the pair of protective cover sheets by a separate printing jig.

As described above, according to the method for manufacturing a protective cover material of the mobile terminal of the present invention, the hot-melt reinforcement in a state in which the hot melt is applied to the surface of the reinforcing plate such as a bakelite panel by silk screen printing or roll printing By heating and bonding the leather sheets to both sides of the plate simultaneously with pressing, the bonded surfaces are not easily lifted and are not peeled off, so that the LCD liquid crystal panel of the portable terminal can be continuously and completely protected.

Fig. 1 is an exploded perspective view schematically showing the coupling and use of a protective cover bonded and treated with two leather seats and a reinforcing plate disposed therebetween as a bond according to the prior art.
FIG. 2 is a cross-sectional view schematically showing that the protective cover shown in FIG. 1 is bonded and processed by a bonding method.
Fig. 3 is an exploded perspective view schematically showing the coupling and use of a protective cover bonded and treated with two leather sheets and a reinforcement plate disposed therebetween by hot melt to a mobile terminal such as a cellular phone according to the present invention.
4 is a cross-sectional view schematically illustrating a protective cover in which a reinforcing plate is bonded and treated with a hot melt according to various embodiments of the present disclosure.
Figure 5 is a block diagram showing a method for manufacturing a protective cover material of the mobile terminal of the present invention.

Hereinafter, a method for manufacturing a protective cover material of a mobile terminal according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and they may vary depending on the intentions or customs of the client, the operator, the user, and the like. Therefore, the definition should be based on the contents throughout this specification.

Like numbers refer to like elements throughout the drawings.

FIG. 3 is an exploded perspective view schematically illustrating the coupling and use of a protective cover bonded and treated with two sheets of leather sheets and a reinforcing plate disposed therebetween by hot melt to a mobile terminal such as a cellular phone, and FIG. 4. 5 is a cross-sectional view schematically illustrating a protective cover in which a reinforcing plate is bonded and treated with a hot melt according to various embodiments of the present disclosure, and FIG. 5 is a block diagram illustrating a method for manufacturing a protective cover material for a portable terminal of the present invention.

3 to 5, the protective cover material manufacturing method of the mobile terminal according to the present invention, the step of applying a hot melt on the surface of the reinforcing plate, such as bakelite plate; And heating and bonding the protective cover sheets such as leather sheets on both sides of the hot-melted reinforcing plate at the same time as pressing.

According to another embodiment of the present invention, a method for manufacturing a protective cover material for a mobile terminal includes: applying hot melt to one side of a protective cover sheet such as two leather sheets; And heating and bonding simultaneously with pressing in a state where the reinforcing plate is disposed inside a protective cover sheet such as two sheets of hot-melted leather sheets.

In particular, the step of coating the hot melt is a hot melt is applied to the surface of the reinforcing plate such as bakelite plate by silk screen printing or roll printing.

Here, generally referred to as "hot melt" (HOT MELT) is made of a thermoplastic resin, and is a material used for adhesives or coatings because it solidifies immediately when heated and melted and then cooled.

In addition, the most commonly used hot melt is E.V.A (Ethylene Vinyl Acetate), which is mainly used for packing boxes or cartons or for general bonding of paper, wood, steel, clothing, and plastics.

In particular, hot melt has the advantage of not using a solvent, and the effect of significantly reducing the pollution of the environment and the pollution of the workplace, it is also true that there is an instability that is detached by heat during the use of the finished product because it is simply melted and attached to the heat.

In this case, the reinforcement plate serves as a support member that supports the sheet not to be easily bent by an external force applied from the outside in a state of being bonded to a protective cover sheet such as a leather sheet, and the material used therein is a bakelite panel. Of course, it is not limited to (bakelite panel), and if it can support a certain degree of force, it can be seen that it is not particularly limited, including bakelite panel, resin panel, and the like.

For reference, bakelite is a thermosetting resin produced by the reaction between phenol and formaldehyde (actually using formalin, its aqueous solution), and Belgian LH Bakland invented it in the United States in 1906. It is a kind of synthetic resin.

And since what occurred in the first reaction before hardening resembles natural rosin, it is called synthetic resin, and it is industrialized under the trade name of "Bakelite", and became the beginning of today's artificial material, namely plastic, Excellent electrical insulation, mechanical strength and heat resistance.

In addition, the bakelite panel is mixed with wood powder or pigment, or penetrated into paper, placed in a mold and heated under pressure to be molded.

In addition, the protective cover sheet is used to appear on the exterior, such as a leather seat, the exterior material is subjected to the design processing, such as color implementation mill shape implementation, the material used for this is not limited to the leather seat, of course, As long as it can be designed, natural leather, artificial leather, vinyl materials, and the like are not particularly limited.

Referring to FIG. 3, the protective cover sheet 320 such as two leather sheets and the reinforcing plate 330 disposed therebetween carry a protective cover 300 bonded and treated with a hot melt 340 such as a mobile phone. The coupling and use of the terminal 100 will be described.

Here, the opening and closing structure of the coupling means for coupling the protective cover 300 to the mobile terminal 100 and the opening and closing of both ends of the protective cover 300 is a technique well known to those skilled in the art, and will not be described for convenience. It specifically describes the material for the protective cover of the terminal and its manufacturing method.

First, it looks at an embodiment of the protective cover 300 according to the manufacturing method of the protective cover material of the mobile terminal of the present invention.

As shown in Figure 4 (a), the protective cover 300 according to an embodiment of the present invention, both sides of the reinforcing plate 330 coated on both sides by hot melt in a silk screen printing method or a roll printing method. Two protective cover sheets 320 such as leather sheets are laminated on each other, and the two protective cover sheets 320 are pressed at a constant pressure in the stacked state, and heated at a constant temperature to reinforce the plate ( It is comprised by bonding to both surfaces of 330, respectively.

As described above, the hot melt 340 processed on both sides of the reinforcement plate 330 by the silk screen printing method or the roll printing method is first applied to both sides of the reinforcement plate 330 at room temperature, but hardened after a predetermined time. do.

Therefore, as described above, in a state in which the protective cover sheet 320 is closely stacked on the cured hot melt 340, the hot melt is melted when heated at a constant temperature, so that each side of the reinforcing plate 330 is covered with the protective cover sheet 320. ) Are bonded to each other.

Therefore, the protective cover sheet 320 and the reinforcing plate 330 bonded by the molten hot melt as described above is uniformly combined as well as the bonding surface is not easily peeled off, in particular, the LCD liquid crystal of the mobile terminal 100 The panel can be protected continuously and completely.

Here, the protective cover material of the mobile terminal of the present invention according to the modified embodiment, the hot melt is applied to each side of the protective cover sheet 320, such as two leather sheets, respectively, the two sheets of hot melt treatment The reinforcing plate 330 is disposed inside a protective cover sheet 320 such as a leather seat, and is heated and bonded at the same time as pressing.

Subsequently, as shown in FIG. 4B, according to another embodiment of the present invention, a protective cover 300 in which a reinforcing plate is joined and treated with hot melt will be described.

This, unlike (a) of FIG. 4 in which hot melt is applied only to both sides of the reinforcement plate 330 by a silkscreen printing method or a roll printing method, is coupled to each of the reinforcement plates 330 as well as both sides of the reinforcement plate 330. Hot melt is also applied to the inner surface of the protective cover sheet 320, such as two sheets of leather, such as silk screen printing or roll printing.

Therefore, the hot melt is melted when heated to a constant temperature in a state in which the protective cover sheet 320, such as two leather sheets coated with hot melt, are laminated on both surfaces of the reinforcement plate 330 coated with hot melt. Each side of the reinforcing plate 330 is bonded to the protective cover sheet 320, respectively.

Therefore, unlike (a) of FIG. 4 in which hot melt is applied only to the reinforcing plate 330, two protective cover sheets 320 respectively coupled to both of the reinforcing plate 330 and the reinforcing plate 330, respectively. It can be seen that (b) of FIG. 4, which is bonded to the inner surface of the hot melt and then bonded, can exhibit better adhesive strength.

At this time, the outer line of the coated hot melt 340 is spaced apart from the protective cover sheet 320 by a predetermined distance, it may be applied to be located at the reference line L1.

This is to prevent the molten hot melt 340 from flowing out of the protective cover sheet 320 when a high temperature and high pressure is applied to the excessively applied hot melt 340.

In addition, as shown in Fig. 4 (c), according to another embodiment of the present invention, the protective cover which is sewn by the edge portion of the protective cover sheet 320 in the state that the reinforcing plate is bonded and treated with hot melt Look at (300).

This is different from (b) of FIG. 4, in which hot melt is applied to both sides of the reinforcement plate 330 and two protective cover sheets 320 by silkscreen printing or roll printing, both sides of the reinforcement plate 330 Of course, the hot melt is also applied to the inner surfaces of the two protective cover sheets 320 respectively bonded to the reinforcing plate 330 by silk screen printing or roll printing, but bonded to each other, a pair of protective cover sheets 320. The edges of the rolls are rolled so as to face each other and stitched by a sewing machine in a folded state (see reference numeral 310 of FIG. 3).

As shown in (c) of Figure 4, the sewing line sewn seam 310 is formed to be spaced apart by the other reference line L2 position from the outside, one end of the protective cover sheet 320 rolled inwardly folded state The outer line of the hot melt 340 is disposed at a spaced apart position L3, the coating may be applied to be located at another reference line L4.

In particular, the outer line of the hot melt 340 coated on both sides of the reinforcing plate 330 is applied to L4 which is the same position as the outer line of the hot melt 340 coated on the inner surfaces of the two protective cover sheets 320. It is preferable to maximize the bonding force between the protective cover sheet 320 and the reinforcing plate 330 by applying and arranging, and then heating and bonding at the same time as pressing.

At this time, as described above, separate printing so that the hot melt 340 is located at another reference line L4 which is the same position on both sides of the reinforcing plate 330 and the inner surface of the two protective cover sheet 320 is applied. It is also preferable to use a printing jig (not shown).

Figure 5 is a block diagram showing a method for manufacturing a protective cover material of the mobile terminal of the present invention.

Protective cover material manufacturing method of a mobile terminal according to the present invention, basically the step of applying a hot melt on the surface of the reinforcing plate, such as bakelite plate; And heating and bonding the protective cover sheets such as leather sheets on both sides of the hot-melted reinforcing plate at the same time as pressing.

Therefore, the method for manufacturing a protective cover material of the mobile terminal according to the present invention, according to the case of Figs. 4 (a) to 4 (c), the specific manufacturing method will be different, but for convenience of description below Figure 4 Based on the case of (c), the method for manufacturing a protective cover material of a mobile terminal will be described.

The protective cover material manufacturing method of the mobile terminal according to the present invention comprises the steps of coating the hot melt on both surfaces of the reinforcing plate such as bakelite plate; Applying a hot melt to one side of the protective cover sheet such as two leather sheets; Heating and bonding the protective cover sheets to both surfaces of the reinforcing plate at the same time as pressing the surfaces having hot melt coated thereon; And rolling the edge portions of the two protective cover sheets heated and bonded to both sides of the reinforcing plate so as to face each other so as to face the inner side, and stitching them with a sewing machine in a folded state.

Here, the hot melt 340 is applied to both surfaces of the reinforcing plate 330 and one side of the protective cover sheet 320 is defined by a separate printing jig (not shown), the hot melt is applied to each The areas to be treated are characterized in that they coincide with each other.

Therefore, according to the protective cover material and the manufacturing method of the mobile terminal of the present invention configured as described above, in the state of hot-melt coating by the silk screen printing method or roll printing method on the surface of the reinforcing plate such as bakelite panel, By heating and bonding the leather sheets on both sides of the hot-melted reinforcing plate at the same time, the bonded surfaces are not easily lifted and are not peeled off, so that the LCD liquid crystal panel of the mobile terminal 100 can be continuously and completely protected. It can be effective.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.

100: mobile terminal
300: protective cover
310: seam
320: protective cover sheet
330: reinforcement plate
340: hot melt
L1 to L4: baseline

Claims (5)

As a protective cover material of the mobile terminal 100,
A reinforcement plate 330 to which the hot melt 340 is applied to a region on which both sides are set; And
A pair of protective cover sheets 320 laminated on both sides of the reinforcing plate 330 and having a hot melt 340 coated on one side of the same area as opposed to a predetermined area of the reinforcing plate 330; Including,
The pair of protective cover sheets 320 on both sides of the reinforcing plate 330 is heated and pressed at the same time, respectively, the protective cover material for a mobile terminal.
The method of claim 1,
The hot melt 340 is applied by a silk screen printing method or a roll printing method, the hot melt 340 is the same set area of the reinforcing plate 330 and the pair of protective cover sheet 320 by a separate printing jig. The protective cover material of the mobile terminal, characterized in that the coating treatment.
Applying hot melt to both surfaces of the reinforcing plate;
Coating a hot melt on one side of the two protective cover sheets; And
Hot melt is coated on the surface coated with each other, the step of heating and bonding the protective cover sheet on both sides of the reinforcing plate at the same time, respectively; and the protective cover material of the mobile terminal Manufacturing method.
The method of claim 3,
Rolling the edges of the two protective cover sheets heated and bonded to both sides of the reinforcement plate facing each other to face inwardly, the step of stitching by sewing machine in a folded state; further comprising a Protective cover material manufacturing method.
The method of claim 3,
The hot melt is a protective cover material manufacturing method of a mobile terminal, characterized in that the coating is applied to the same set area of the reinforcement plate and a pair of protective cover sheet by a separate printing jig.

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