JP2021107986A - Resin-made card medium and manufacturing method of the same - Google Patents

Abstract

To provide a card medium and a manufacturing method of the same capable of obtaining a clear click feeling of a switch even by a pressing operation via a resin surface layer and a beautiful appearance in the card medium having a tactile switch inside.SOLUTION: According to the present invention, there is provided a resin-made card medium including: a component substrate attached with electronic components such as a tactile switch; a plant fiber containing resin layer which is laminated on the component substrate and houses the tactile switch so as to be exposed to the surface by providing a first opening at a part thereof; and a first finishing layer laminated on the plant fiber containing resin layer and comprising one or two resin layers, wherein the resin layer in the first finishing layer facing a protective sheet of the tactile switch is arranged so as to form a gap between itself and the protective sheet. Also provided is a manufacturing method of the card medium.SELECTED DRAWING: Figure 1

Description

The present invention relates to a resin card medium equipped with a tactile switch and a method for manufacturing the same. In particular, the surface layer of the card covering the upper part of the tactile switch is arranged so as to form a gap between the resin card medium and the protective sheet of the tactile switch. As a result, the reliability of ON-OFF of the switch and the click feeling are not impaired even by the pressing operation through the surface layer, and the resin card medium and the resin card medium having the beauty that the unevenness of the surface layer accommodating the tactile switch is inconspicuous. Regarding the manufacturing method.

Due to recent demands for higher functionality, multifunctionality, and improved security, the card has an IC (Integrated Circuit) chip as a large-capacity variable information recording medium, and an antenna circuit for obtaining power and signals from the outside. In many cases, a component board on which a large number of electronic components are mounted, such as a display unit for displaying information, a sensor unit for detecting fingerprints, a power supply (battery), and a switch for turning the power supply on and off, is incorporated. It has become.

In particular, the switches built into the card need to be thin and small, and it is required to have a confirmation means for notifying the completion of the operation by some means such as vibration. Therefore, many tactile switches have been used in recent years. Has been done.

This tactile switch is generally provided on a circuit board in which a plurality of contacts are arranged and on the circuit board. The outer peripheral edge contacts the contacts on both sides, and the apex is located on the central contact. It is composed of a dome-shaped leaf spring arranged so as to be used, a case for accommodating the leaf spring, and a protective sheet fixed to the upper surface of the case with an adhesive or the like in order to hold the leaf spring in the case. There is.

Therefore, when a pressing force is applied to the apex of the leaf spring, the tactile switch elastically deforms downward and descends, contacting the central contact of the circuit board, and releasing the pressing force. The apex of the leaf spring rises due to its elastic restoring force until it returns to its original position, and separates from the central contact of the circuit board. As a result, the tactile switch can turn on and off the switch of the electronic device.

By the way, in a small tactile switch as described above, it is important to be able to turn the switch on and off reliably, and in order to notify the completion of the on-off operation of the switch, a clear click feeling is given to the operator of the switch. Giving is also important. For this reason, in recent years, improved tactile switches have been developed so that a clear click feeling can be obtained even in thin and miniaturized tactile switches.

For example, in Japanese Patent Application Laid-Open No. 2015-170492 (Patent Document 1), a part of a protective sheet arranged on a dome-shaped leaf spring and fixed to the edge of the upper surface of the case is not adhered to be pressed. By ensuring that the protective sheet is sufficiently deformed at the time, the disadvantage of shortening the length of the elastic part of the protective sheet due to miniaturization is eliminated, and a reliable switch ON-OFF and a clear click feeling can be obtained. A miniaturized tactile switch has been developed.

However, in order to incorporate the tactile switch into the card, it is necessary to ensure the waterproofness and durability of the card, so to the outermost surface of the card body, as a substitute for the protective sheet of the tactile switch, or with a protective sheet A resin layer as a finishing layer that overlaps and covers the entire surface of the card including the tactile switch must be provided. For this reason, the dome-shaped leaf spring of the tactile switch incorporated in the card is always pressed via the above-mentioned resin layer that is completely adhered to the peripheral portion of the tactile switch, so that the protective sheet has a protective sheet. Even if the tactile switch described in Reference 1 in which a part is non-adhesive is used, the resin layer is not sufficiently deformed at the time of pressing, the ON-OFF of the switch becomes unstable, and a clear click feeling is obtained. There was a problem that it could not be obtained.

Further, in order to incorporate the tactile switch into the card, the size of the opening of the switch accommodating portion provided in the card body must be larger than the outer shape of the case of the tactile switch. Therefore, the support span of the resin layer that covers the opening of the switch housing (distance between the opposite edges in the opening) is the support span of the protective sheet that covers the space of the case (opposing edges in the case). As a result of being wider than the distance between the part and the edge), when the tactile switch is pressed from above the resin layer, the resin layer cannot be sufficiently supported and a clear click feeling cannot be obtained, or the resin stretched by pressing. There was a problem that the layer itself could not be sufficiently restored and wrinkles were generated, causing poor appearance.

Further, if the support span of the resin layer covering the opening of the switch accommodating portion is wide, the resin layer is extended in a short period of time due to the repeated operation of pressing the tactile switch, and sufficient restoring force cannot be obtained. As a result, the deterioration of the resin layer as the finishing layer progresses in a short period of time, and the unevenness of the resin layer accommodating the tactile switch becomes conspicuous, which causes a problem that the appearance of the card is spoiled. Further, depending on the manufacturing conditions, the resin layer in the vicinity of the switch accommodating portion may have irregularities immediately after the hot press, which may spoil the aesthetic appearance.

Japanese Unexamined Patent Publication No. 2015-170492

Therefore, in the present invention, the outermost surface is provided with a resin layer that covers the entire surface of the card, and in a resin card medium equipped with a tactile switch inside, the switch can also be switched by a pressing operation with the resin layer interposed therebetween. It is an object of the present invention to provide a resin card medium in which the certainty of ON-OFF and a clear click feeling are not impaired, and the surface unevenness accommodating the tactile switch is inconspicuous.

In a resin card medium equipped with a tactile switch inside, the present inventors, when a resin layer as a finishing layer covering the entire surface of the card is provided on the outermost surface, causes a factor that impairs the click feeling and the vicinity of the switch accommodating portion. We analyzed the factors that cause irregularities in the resin layer, and made extensive studies on the shape and size of the switch accommodating portion that accommodates the tactile switch, and the method of supporting the resin layer that covers the switch accommodating portion.

As a result, a gap is formed between the protective sheet of the tactile switch and the resin sheet of the card medium facing the protective sheet, and the edge of the opening of the accommodating portion accommodating the tactile switch toward the back surface side of the outermost surface layer of the card medium. Providing a supporting means for supporting the surface layer, which protrudes inward, provides a reliable ON-OFF of the switch, a clear click feeling, and an appearance beauty in which the unevenness of the switch accommodating portion is inconspicuous. Therefore, we have found that it is effective and have completed the present invention.

That is, according to the present invention, a component substrate on which a tactile switch and other electronic components are mounted and a plant fiber containing plant fibers laminated on the component substrate on the side on which the tactile switch is mounted are contained. It is a resin layer (“blended paper” before hot press molding, the same applies hereinafter), and by providing a first opening in a part thereof, the tactile switch is exposed on the surface of the plant fiber-containing resin layer. One or more plant fiber-free resin layers (“resin sheet” before hot press molding, the same applies hereinafter, which are laminated on the plant fiber-containing resin layer and the plant fiber-containing resin layer contained in the above. ), The resin layer in the first finishing layer facing the protective sheet of the tactile switch forms a gap between the resin card medium and the first finishing layer. A resin card medium is provided, which is characterized in that it is arranged in.

In the present invention, a switch board having a plurality of connection terminals formed on the upper surface and provided on the switch board, the peripheral portion contacts the connection terminals on both sides, and the top portion is above the central connection terminal. A dome-shaped leaf spring arranged so as to be located at, a case provided on the switch board to form a space for accommodating the leaf spring, and a case for holding the leaf spring in the space of the case. Therefore, a tactile switch provided with a protective sheet fixed to the upper surface of the case is used, but the present invention is not particularly limited to this. A general tactile switch can be used without particular limitation as long as it is provided with a dome-shaped leaf spring that elastically deforms when the pressing force is released and elastically returns when the pressing force is released.

Further, the plant fiber-containing resin layer is provided with a first opening that opens so as to expose the tactile switch to the surface of the plant fiber-containing resin layer in order to accommodate the tactile switch in the card. Further, since one or two or more resin layers are laminated on the entire surface of the card medium as the first finishing layer on the first opening and the plant fiber-containing resin layer, the tactile switch moves out from the card medium. There is no risk of popping out, and the waterproofness of the card medium is also improved.

The tactile switch used in the present invention is provided with a protective sheet on the upper surface of the case. Therefore, since there is no possibility that the leaf spring in the space portion of the case pops out, the tactile switch can be easily assembled to the resin card medium. In this case, the protective sheet does not have to be fixed to the top of the dome-shaped leaf spring in consideration of the operability of the switch.

In the present invention, the resin layer in the first finishing layer facing the protective sheet is arranged so as to form a gap between the protective sheet and the resin layer. If a gap is provided between the resin layer in the first finishing layer and the protective sheet, the resin layer can be freely deformed independently of the displacement of the protective sheet of the tactile switch and the dome-shaped leaf spring under the protective sheet. Therefore, as long as the click feeling of the tactile switch itself is adjusted, the click feeling of the tactile switch initially set can be obtained as it is even after being incorporated into the card medium.

When the first finishing layer is formed of a plurality of resin layers, the resin layer in the first finishing layer facing the protective sheet is closest to the protective sheet and directly passes through the gap. It means a resin layer facing the card, and the resin layer substantially forms the outermost surface of the card. Further, the resin layer facing the protective sheet is preferably made of PET (polyethylene terephthalate) resin in order to prevent unintentional deformation due to hot pressing.

Further, the protective sheet of the tactile switch preferably has a through hole and / or a through slit for venting gas. If the protective sheet is provided with a through hole and / or a through slit, the gas inside the case expanded by the heat of the hot press can be easily released to the outside during card molding, so that the protection adhered to the upper surface of the case is provided. It prevents the sheet from expanding irreparably and impairing the click feeling of the tactile switch.

The tactile switch used in the present invention may or may not have a protective sheet fixed to the upper surface of the case in order to hold the dome-shaped leaf spring in the space of the case. As described above, if the case is not provided with a protective sheet on the upper surface, the leaf spring in the space of the case may pop out, which reduces the handleability of the tactile switch, but the resin card medium is used. After assembly, the leaf spring is held in the case by the resin layer laminated on the outermost surface of the card, and the dome-shaped leaf spring in the case can be directly pressed without the intervention of the protective sheet. Therefore, the deformation of the dome-shaped leaf spring can be directly obtained as a click feeling. In this case, the resin layer on the outermost surface of the card does not necessarily have to have a gap between it and the dome-shaped leaf spring, and in consideration of switch operability, the dome is like a protective sheet for a tactile switch. It may or may not be fixed to the top of the shaped leaf spring.

Further, in the present invention, on the back surface of the resin layer arranged on the outermost surface of the first finishing layer, a lower layer such as another resin layer arranged on the back surface side of the resin layer or a plant fiber-containing resin layer is provided. An adhesive layer for fixing the resin is laminated. The adhesive layer has a second opening aligned with the first opening of the plant fiber-containing resin layer, and the second opening is in the first opening in a plan view. A protruding portion may be provided that protrudes inward from the edge of the first opening so as to overlap the housed tactile switch (usually the case of the tactile switch).

Normally, the first opening for accommodating the tactile switch has an angular edge, so that the surface resin layer tends to have irregularities such as creases during hot pressing or the like. In addition, since it is larger than the opening of the space of the case that accommodates the dome-shaped leaf spring, the support span of the resin layer (distance between the opposite edges in the opening) and the excessive expansion of the expansion / contraction region are caused. , The click feeling is impaired, the resin layer stretched by pressing cannot be sufficiently restored, and the surface of the card accommodating the tactile switch becomes uneven, which impairs the appearance.

However, in the present invention, an adhesive layer is arranged on the back surface of the resin layer arranged on the outermost surface, and the adhesive layer is provided with a second opening that is aligned with the first opening of the plant fiber-containing resin layer. Since the second opening is provided with a protruding portion that protrudes inward from the edge of the first opening, the resin layer on the outermost surface has a protruding portion at the edge of the first opening. By being covered, the corners are relaxed, and unevenness such as creases is less likely to occur. Further, the resin layer on the outermost surface can be supported from below by a support span (distance between opposite edges in the case) similar to that supported by the case of the tactile switch. Further, since the adhesive layer is substantially non-stretchable, the outermost surface resin layer is a stretchable region similar to that supported by the tactile switch case in a second opening that is not bonded to the adhesive layer. As a result, it is possible to suppress excessive expansion of the support span and the expansion / contraction region, and the click feeling is not impaired and the stretched resin layer due to pressing is not sufficiently restored. Further, for this reason, the surface of the card accommodating the tactile switch is not uneven, and the appearance can be maintained beautifully.

In the resin card medium of the present invention, a plant fiber-containing resin layer may be further laminated on the surface of the component substrate on the side opposite to the side on which the tactile switch is mounted.

In this case, in the resin card medium of the present invention, in the manufacturing process, the component substrate on which electronic components such as IC chips and tactile switches are mounted is a plastic fiber and a plant fiber made of a copolymerized polyester resin such as PET (polyethylene terephthalate) resin. The front side mixed paper and the back side mixed paper (one "plant fiber-containing resin layer" is formed after hot press molding, the same applies hereinafter) are sandwiched from the upper and lower surfaces so as to wrap the component substrate. For this reason, the front-side mixed paper and the back-side mixed paper laminated on the upper and lower surfaces receive substantially the same pressure from the electronic components on the upper and lower surfaces of the component substrate during heat pressing, and have substantially the same density and substantially the same heat shrinkage. Since it is compressed in the thickness direction while maintaining the ratio to form one plant fiber-containing resin layer, it contributes to prevent deformation of the resin card after completion.

In the present invention, the first finishing layer of the resin card medium is composed of two or more resin layers, and a plant on or above the surface of the component substrate opposite to the side on which the tactile switch is mounted. When a second finishing layer composed of two or more resin layers containing no plant fibers is laminated on the fiber-containing resin layer, each resin layer of the first finishing layer and each of the second finishing layers Each of the resin layers has the same structure as each other, and each of the resin layers of the first finishing layer and each of the resin layers of the second finishing layer are positioned symmetrically with each other sandwiching the plant fiber-containing resin layer. It is preferable to arrange it.

In the resin card medium of the present invention, when each of the resin layers of the first finishing layer and each of the resin layers of the second finishing layer are arranged so as to be symmetrically positioned with the plant fiber-containing resin layer sandwiched between them. During hot pressing, the upper and lower surfaces of the mixed paper in contact with the finishing layer can be constrained to exhibit more uniform heat shrinkage.

Further, in the present invention, each of the resin sheets constituting the first and second finishing layers (a "resin layer" is formed after hot press molding, the same applies hereinafter) is made of the same material and the same thickness. A card medium laminate before heat pressing is prepared so that each of the resin sheets of the first and second finishing layers has the same structure and is arranged at symmetrical positions with the mixed paper sandwiched between them. Then, when the card medium laminate is heat-pressed at a temperature equal to or higher than the softening point of the plastic fiber and lower than the melting point, the upper and lower surfaces of the mixed paper show even more uniform heat shrinkage, so that it is extremely flat and smooth, and the same. It is possible to obtain a resin card medium in which the resin layers of the first and second finishing layers having the same material and the same thickness are arranged at symmetrical positions with the plant fiber-containing resin layer interposed therebetween. In the specification of the present application, the "temperature above the softening point and below the melting point" refers to the degree to which the plant fiber-containing resin layer and the first finishing layer and / or the plant fiber-containing resin layer and the second finishing layer are fused. Includes the temperature at which the plastic fibers melt in part.

Therefore, it is preferable that each of the resin sheets of the first finishing layer has the same thickness as each resin sheet of the second finishing layer arranged at symmetrical positions across the mixed paper. / Or preferably made of the same material as each resin sheet of the second finishing layer.

In the present invention, "having the same structure" as the resin sheet or the resin layer after hot press molding means that the resin sheet or the resin layer after hot press molding at symmetrical positions has the same size and size. It means that the shape such as thickness is the same.

Further, in the present invention, "arranged at symmetrical positions" across the mixed paper or the plant fiber-containing resin layer after hot press molding means, for example, a resin sheet on the surface of the mixed paper in a direction away from the surface. When the first finishing layer composed of c / resin sheet b / resin sheet a (“resin layer a / resin layer b / resin layer c” is formed after hot press molding) is laminated, the back surface of the mixed paper is used. Also, the second finishing layer is in the order of the resin sheet c / resin sheet b / resin sheet a in the direction away from the back surface so that the resin sheets having the same structure as the front surface are lined up with the mixed paper as a mirror surface. Means that are laminated. In other words, the resin card medium described above is a resin sheet a / resin sheet b / resin sheet c, mixed paper, and a resin sheet c / resin sheet b from the top (front surface) to the bottom (back surface). / It means that the resin sheets a are laminated in this order.

In the present invention, each of the two or more resin sheets of the first finishing layer and each of the two or more resin sheets of the second finishing layer are arranged so as to be symmetrically positioned with the mixed paper in between. For example, the above-mentioned effects can be obtained, and as long as the number is two or more, there is no particular limitation on the number of laminated resin sheets of the first and second finishing layers.

In the resin card medium of the present invention, the mixed paper made of plastic fibers made of a copolymerized polyester resin such as PET resin and plant fibers also functions as a cushioning material during hot pressing, so that the flatness of the card medium after molding can be improved. Absorbs the unevenness of the component substrate (thickness of the electronic component) due to the electronic component so as to maintain it. In this way, in order for the mixed paper to reliably absorb the unevenness of the component substrate, the total thickness of the component substrate and the thickness of the electronic component is 80% or less of the thickness of the card medium after heat press molding. More preferably, it is adjusted to be 70% or less.

Next, the method for manufacturing the resin card medium of the present invention described above will be described. The resin card medium of the present invention has a second resin sheet (a "resin layer" is formed after hot press molding) that does not contain plant fibers when the upper part of the tactile switch is covered with a protective sheet. On the second finishing layer, a dome-shaped leaf spring that is elastically deformed by the pressing force from the protective sheet and elastically restored by the release of the pressing force from the protective sheet is provided. A step of placing a component board on which a tactile switch and other electronic components are mounted with the side on which the tactile switch is mounted facing upward, and a first opening partially provided on the component board. A step of laminating a mixed paper (a "plant fiber-containing resin layer" is formed after hot press molding) composed of plastic fibers and plant fibers so that the tactile switch is exposed on the surface of the mixed paper. In the step of laminating a first finishing layer made of two or more resin sheets containing no plant fibers on the mixed paper, on the back surface of the resin sheet arranged on the uppermost surface of the first finishing layer. By including a step for further laminating an adhesive sheet (which forms an "adhesive layer" after hot press molding) for fixing to the lower sheet arranged on the back surface side of the resin sheet, card medium lamination before hot pressing is performed. In a method for producing a resin card medium by preparing a body and hot-pressing the card medium laminate at a temperature equal to or higher than the softening point of the plastic fiber and lower than the melting point, the adhesive layer contains the plant fiber. It has a second opening that aligns with the first opening of the resin layer, which in plan view overlaps with the tactile switch housed in the first opening. The tactile switch protective sheet is provided with a protruding portion protruding inward from the edge of the first opening so as to wrap, and the protective sheet of the tactile switch is a resin sheet in the first finishing layer facing the protective sheet. It is obtained by a manufacturing method including a step of arranging so as to form a gap between the two.

In the present invention, as the plant fiber in the mixed pulp paper suitable for obtaining a resin card medium having a high degree of flatness and smoothness by absorbing the unevenness of the component substrate due to the electronic component, for example, coniferous tree High yield unbleached kraft pulp (HNKP; N material), coniferous bleached kraft pulp (NBKP; N material, NB material), broadleaf unbleached kraft pulp (LUKP; L material), broadleaf bleached kraft pulp (LBKP, L material), etc. Chemical pulp; mechanical pulp such as groundwood pulp (GP), pressured groundwood pulp (PGW), thermomechanical pulp (TMP); used paper pulp such as Dinking pulp (DIP), waste pulp (WP) and semi Uses wood pulp such as chemical pulp (CP) and non-wood pulp such as cotton, straw, bamboo, esparto, western hemp (kenaf), cotton (cotton), Manila hemp (bagus), flax, hemp, yellow hemp, and goose bark. can do.

These plant fibers may be used alone or in combination of two or more. Among these, NBKP, western hemp, and Manila hemp pulp are preferable because pulp having an appropriate fiber length is distributed and it is easy to make strong paper, and NBKP is particularly preferable because it has high whiteness and is easily available.

Further, in the present invention, the plastic fiber blended in the above-mentioned mixed paper, and a finishing layer used to improve the flatness and smoothness of the card surface, as well as printability, glossiness, flaw resistance, and the like. Examples of the resin material suitable as the resin sheet of the above include polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyethylene terephthalate copolymer (PETG), polycarbonate (PC), acrylic nitrile butadiene styrene (ABS) and the like. ..

According to the present invention, in a resin card medium, an adhesive layer is arranged on the back surface of the resin layer arranged on the outermost surface, and the adhesive layer is aligned with the first opening of the plant fiber-containing resin layer. Since the second opening is provided with two openings, and the second opening is provided with a protruding portion protruding inward from the edge of the first opening, the resin layer on the outermost surface is the first opening. By covering the edge of the plastic with the protruding portion, the corner is relaxed and unevenness such as a crease is less likely to occur. Further, the resin layer on the outermost surface can be supported from below by a support span (distance between opposite edges in the case) similar to that supported by the case of the tactile switch. Further, since the adhesive layer is substantially non-stretchable, the outermost surface resin layer is a stretchable region similar to that supported by the tactile switch case in a second opening that is not bonded to the adhesive layer. As a result, it is possible to suppress excessive expansion of the support span and the expansion / contraction region, and the click feeling is not impaired and the stretched resin layer due to pressing is not sufficiently restored. Further, for this reason, the surface of the card accommodating the tactile switch is not uneven, and the appearance can be maintained beautifully.

Further, according to the present invention, when the tactile switch of the resin card medium is provided with a protective sheet on the upper surface of the case, the protective sheet is between the protective sheet and the resin layer in the first finishing layer facing the protective sheet. Since it is arranged so as to form a gap in the tactile switch, it can be freely deformed independently of the displacement of the protective sheet of the tactile switch and the dome-shaped leaf spring under it, and even the click feeling of the tactile switch itself can be adjusted. If this is done, the click feeling of the tactile switch initially set can be obtained as it is even after being incorporated into the card medium.

As a result of the above, according to the resin card medium of the present invention, the outermost surface is provided with a resin layer covering the entire surface of the card, and the resin layer is provided inside the resin card medium equipped with a tactile switch. The certainty of ON-OFF of the switch and a clear click feeling can also be obtained by the intervening pressing operation.

It is sectional drawing which shows typically the cross section of the resin card medium of Example 1 which concerns on this Embodiment. It is sectional drawing which partially enlarged the vicinity of the tactile switch of the resin card medium of Example 1 which concerns on this Embodiment. FIG. 5 is an exploded cross-sectional view schematically showing a laminated structure of a resin card medium of Example 1 according to the present embodiment before hot press molding. It is sectional drawing which partially enlarged the vicinity of the tactile switch of the resin card medium of Example 2. FIG. FIG. 5 is a partially enlarged cross-sectional view of the vicinity of the tactile switch of the resin card medium of Comparative Example 1. It is a weight-stroke curve showing the behavior of the dome-shaped leaf spring of the tactile switch of the resin card medium. (A) is a cross-sectional view of a card medium in which the vicinity of the tactile switch of the first embodiment is partially enlarged, and (b) is a schematic cross-sectional view of a surface layer portion of the card medium of (a) further enlarged. (A) is a cross-sectional view of a card medium in which the vicinity of the tactile switch of Comparative Example 1 is partially enlarged, and (b) is a schematic cross-sectional view in which the surface layer portion of the card medium of (a) is further enlarged.

Hereinafter, the resin card medium and the manufacturing method thereof according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

FIG. 1 schematically shows a cross section of the resin card medium 1 according to the present embodiment, and FIG. 2 shows a partial cross section of the resin card medium 1 according to the present embodiment near the tactile switch 6. It is shown enlarged. FIG. 3 schematically shows a laminated structure of the resin card medium 1 according to the present embodiment before hot press molding.

As shown in FIG. 1, the resin card medium 1 according to the present embodiment is equipped with a component substrate 3 on which a tactile switch 2 and other electronic components 30 are mounted, a battery 31, and a tactile switch 2. A plant fiber-containing resin layer 4 containing plant fibers, which accommodates the tactile switch 2 so as to be exposed on the surface, is laminated on the component substrate 3 on the side by providing a first opening 41 in a part thereof. A first finishing layer 5a composed of two different resin layers 50a and 51a containing no plant fiber is provided on the plant fiber-containing resin layer 4.

Further, in the resin card medium 1 according to the present embodiment, two different resin layers 50b and 51b that do not contain plant fibers are placed on the surface of the component substrate 3 on the side opposite to the side on which the tactile switch 2 is mounted. It is provided with a second finishing layer 5b made of.

In the present embodiment, in each layer before hot press molding, the plant fiber-containing resin layer 4 is formed from polyethylene terephthalate (PET) mixed paper, and the resin layer 50a on the outermost surface of the card medium 1 is made from a polyethylene terephthalate (PET) sheet. It is molded and the resin layer 51a is molded from a polyethylene terephthalate copolymer (PETG) sheet (FIG. 3).

In the present embodiment, the switch board 20 has a plurality of connection terminals 21 formed on the upper surface thereof, and the switch board 20 is provided on the switch board 20. A dome-shaped leaf spring 22 arranged so as to be located above the connection terminal 20b, a case 23 provided on the switch substrate 20 and forming a space for accommodating the leaf spring 22, and a case 23. A tactile switch 2 provided with a protective sheet 24 fixed to the upper surface of the case 23 is used to hold the leaf spring 22 in the space of the case 23, but the present invention is not particularly limited to this. A general tactile switch can be used without particular limitation as long as it is provided with a dome-shaped leaf spring that elastically deforms when the pressing force is released and elastically returns when the pressing force is released.

Further, the plant fiber-containing resin layer 4 has a first opening 41 opened so as to expose the tactile switch 2 to the surface of the plant fiber-containing resin layer 4 in order to accommodate the tactile switch 2 in the card. It is provided. Further, on the first opening 41 and the plant fiber-containing resin layer 4, two resin layers 50a and 51a are laminated on the entire surface of the card medium 1 as the first finishing layer 5, so that the tactile switch 2 and The waterproofness of the entire card medium 1 is improved.

As shown in FIG. 2, since the tactile switch 2 used in the present embodiment is provided with the protective sheet 24 on the upper surface of the case 23, there is no possibility that the leaf spring 22 in the space portion of the case 23 jumps out. , The tactile switch 2 can be easily assembled to the resin card medium 1. In this case, the protective sheet 24 may or may not be fixed to the top of the dome-shaped leaf spring 22 in consideration of the operability of the switch.

In the present embodiment, since the tactile switch 2 is provided with the protective sheet 24 on the upper surface of the case 23, the resin layer 50a in the first finishing layer 5a facing the protective sheet 24 is placed between the protective sheet 24 and the resin layer 50a. It is arranged so as to form a gap d. When a gap d is provided between the resin layer 50a in the first finishing layer 5a and the protective sheet 24, the resin layer 50a becomes independent of the displacement of the protective sheet 24 of the tactile switch 2 and the dome-shaped leaf spring 22 under the protective sheet 24. As long as the click feeling of the tactile switch 2 itself is adjusted, the click feeling of the tactile switch 2 initially set can be obtained even after being incorporated into the card medium 1.

The resin layer 50a in the first finishing layer 5a facing the protective sheet 24 is a protective sheet when the first finishing layer 5 is formed of a plurality of resin layers 50a and 51a as in the present embodiment. It means the resin layer 50a that is closest to the 24 and directly faces the gap d, and the resin layer 50a substantially forms the outermost surface of the card. Further, the resin layer 50a facing the protective sheet 24 is made of PET (polyethylene terephthalate) resin in order to prevent unintentional deformation due to hot pressing.

Further, in the present embodiment, the protective sheet 24 has a through hole and / or a through slit 240 for venting gas. If the protective sheet 24 is provided with a through hole and / or a through slit 240, the gas in the case 23 expanded by the heat of the hot press can be easily released to the outside during card molding, so that the protective sheet 24 is adhered to the upper surface of the case. It is prevented that the protective sheet 24 is irretrievably expanded to impair the click feeling of the tactile switch 2.

The tactile switch 2 used in the present embodiment includes a protective sheet 24 fixed to the upper surface of the case 23 in order to hold the dome-shaped leaf spring 22 in the space of the case 23. It does not have to be. Although not shown, if the protective sheet 24 is not provided on the upper surface of the case 23, the leaf spring 22 in the space of the case 23 may pop out, so that the handleability of the tactile switch 2 deteriorates, but it is made of resin. After assembling to the card medium 1, the leaf spring 22 is held in the case 23 by the resin layer 50a laminated on the outermost surface of the card, and the dome in the case 23 is directly held without interposing the protective sheet 24. Since the shaped leaf spring 22 can be pressed, the deformation of the dome-shaped leaf spring 22 can be directly obtained as a click feeling. In this case, the resin layer 50a on the outermost surface of the card does not necessarily have to be provided with a gap d between the resin layer 50a and the dome-shaped leaf spring 22, and the tactile switch 2 is protected in consideration of the operability of the switch 2. It may or may not be fixed to the top of the dome-shaped leaf spring 22 like the seat 24.

Further, in the resin card medium 1 of the present embodiment, the back surface of the resin layer 50a arranged on the outermost surface of the first finishing layer 5a is covered with another resin layer arranged on the back surface side of the resin layer 50a. An adhesive layer 6 for fixing to a lower layer such as 51a or a plant fiber-containing resin layer 4 is laminated. The adhesive layer 6 has a second opening 61 aligned with the first opening 41 of the plant fiber-containing resin layer 4, and the second opening 61 is the first in a plan view. A protrusion 62 that protrudes inward from the edge of the first opening 41 is provided so as to overlap the tactile switch 2 (usually, the case 23 of the tactile switch) housed in the opening 41.

Normally, the first opening 41 accommodating the tactile switch 2 has an angular edge, so that the surface resin layer 50a is likely to have irregularities such as creases during hot pressing or the like. Further, since it is larger than the opening of the space of the case 23 that accommodates the dome-shaped leaf spring 22, the support span of the resin layer 50a (distance between the opposite edges in the opening 41) and the expansion / contraction region. Due to the excessive expansion of the tactile switch 2, the click feeling is impaired, the resin layer 50a stretched by pressing cannot be sufficiently restored, and the surface of the card 1 accommodating the tactile switch 2 is uneven, which impairs the appearance.

However, in the present embodiment, the adhesive layer 6 is arranged on the back surface of the resin layer 50a arranged on the outermost surface, and the adhesive layer 6 is aligned with the first opening 41 of the plant fiber-containing resin layer 4. Since the opening 61 of 2 is provided, and the second opening 61 is provided with a protruding portion 62 protruding inward from the edge of the first opening 41, the resin layer 50a on the outermost surface is provided with a resin layer 50a on the outermost surface. By covering the edge of the first opening 41 with the protruding portion 62, the corners are relaxed and unevenness such as a crease is less likely to occur. Further, the resin layer 50a on the outermost surface can be supported from below by a support span (distance between opposite edges in the case 23) similar to that supported by the case 23 of the tactile switch 2. Will be. Further, since the adhesive layer 6 does not substantially expand and contract, the resin layer 50a on the outermost surface is supported by the case 23 of the tactile switch 2 in the second opening 61 which is not adhered to the adhesive layer 6. As a result of having a stretchable region similar to that of the above, it is possible to suppress excessive expansion of the support span and the stretchable region, the click feeling is impaired, and the resin layer 50a stretched by pressing cannot be sufficiently restored. There is no. Further, for this reason, the surface of the card 1 accommodating the tactile switch 2 is not uneven, and the appearance can be maintained beautifully.

Although not shown, in the resin card medium 1 of the present embodiment, a plant fiber-containing resin layer may be further laminated on the surface of the component substrate 3 on the side opposite to the side on which the tactile switch 2 is mounted. ..

In this case, in the resin card medium 1, in the manufacturing process, the component substrate 3 on which the electronic component 30 such as the IC chip and the tactile switch 2 is mounted is a plastic fiber made of a copolymerized polyester resin such as PET (polyethylene terephthalate) resin and a plant. The component substrate 3 is sandwiched from the upper and lower surfaces so as to wrap the component substrate 3 by using the front side mixed paper and the back side mixed paper made of fibers. Therefore, the front-side mixed paper and the back-side mixed paper laminated on the upper and lower surfaces receive substantially the same pressure from the electronic component 30 on the upper and lower surfaces of the component substrate 3 during hot pressing, and have substantially the same density and substantially the same density. Since it is compressed in the thickness direction while maintaining the heat shrinkage rate and forms one plant fiber-containing resin layer 4, it contributes to prevent deformation of the resin card 1 after completion.

In the present embodiment, the first finishing layer 5a of the resin card medium 1 is composed of two or more resin layers 50a and 51a, and the component substrate 3 on the side opposite to the side on which the tactile switch 2 is mounted. A second finishing layer 5b composed of two or more resin layers 50b and 51b containing no plant fiber is laminated on the surface of the above. Further, the resin layers 50a, 51a of the first finishing layer 5a and the resin layers 50b, 51b of the second finishing layer 5b have the same configuration, and the resin layers 50a, 51a and the first of the first finishing layer 5a have the same structure. Each of the resin layers 50b and 51b of the finishing layer 5b of No. 2 is arranged so as to be symmetrically positioned with the plant fiber-containing resin layer interposed therebetween.

As in the present embodiment, the resin layers 50a and 51a of the first finishing layer 5a and the resin layers 50b and 51b of the second finishing layer 5b are symmetrical with each other sandwiching the plant fiber-containing resin layer 4. When arranged so as to be in a position, the upper and lower surfaces of the mixed paper 40 in contact with the finishing layers 5a and 5b can be restrained so as to show more uniform heat shrinkage during heat pressing.

Specifically, in the present embodiment, the resin layer 50a of the first finishing layer 5a and the resin layer 50b of the second finishing layer 5b arranged on the outermost surface of the card are PET (polyethylene terephthalate) having the same thickness. The resin layer 51a of the first finishing layer 5a and the resin layer 51b of the second finishing layer 5b arranged on the back surfaces of the resin layers 50a and 50b, respectively, have the same thickness as PETG (polyethylene terephthalate). Made of polymer). Further, the resin layers 50a and 50b are obtained by hot press molding resin sheets 500a and 500b having the same thickness made of PET resin, and the resin layers 51a and 51b are made of PETG resin and having the same thickness. It can be obtained by hot press molding 510b. Further, the plant fiber-containing resin layer 4 can be obtained by hot-press molding the PET mixed paper 40, and the adhesive layer 6 can be obtained by hot-press molding the adhesive sheet 60.

Then, in the above-mentioned resin sheet, PET mixed paper and adhesive sheet, when sheets made of the same material are directly laminated, one resin layer can be obtained by hot press molding even if the thickness is different. A plant fiber-containing resin layer and an adhesive layer are formed.

Therefore, as in the present embodiment, the resin sheets constituting the first and second finishing layers 5a and 5b have the same structure made of the same material and the same thickness, and each of the first and second finishing layers has the same structure. The card medium laminate 10 before hot pressing is prepared so that the resin sheets 500a, 500b, 510a, and 510b are symmetrically positioned with the PET mixed paper 40 in between (see FIG. 3). Then, when the card medium laminate 10 is hot-pressed at a temperature equal to or higher than the softening point of the plastic fiber and lower than the melting point, the upper and lower surfaces of the PET mixed paper 40 show even more uniform heat shrinkage, so that it is extremely flat and smooth. The resin layers 50a, 50b, 51a, and 51b of the first and second finishing layers 5a and 5b having the same material and the same thickness are symmetrical with respect to each other with the plant fiber-containing resin layer 4 in between. The resin card medium 1 arranged at the position can be obtained.

In the present embodiment, since the PET mixed paper 4 composed of PET fibers and plant fibers also functions as a cushioning material during hot pressing, a component substrate made of electronic components 30 is used so as to maintain the flatness of the card medium 1 after molding. Absorbs the unevenness (thickness of electronic components) of 3. In this way, in order for the PET mixed paper 4 to reliably absorb the unevenness of the component substrate 3, the total thickness of the component substrate 3 and the thickness of the electronic component 30 is set to the thickness of the card medium 1 after heat press molding. On the other hand, it is preferable that the content is adjusted to 80% or less, more preferably 70% or less.

Next, a method for manufacturing the resin card medium 1 according to the present embodiment will be described with reference to FIG.

In the production method of the present embodiment, first, a resin sheet 500b made of PET resin containing no plant fiber is prepared, an adhesive sheet 60 is laminated on the resin sheet 500b, and further, a PETG resin is made on the adhesive sheet 60. The second finishing layer 5b is prepared by laminating the resin sheets 510b.

Subsequently, a tactile switch 2 provided with a dome-shaped leaf spring 22 on the second finishing layer 5b, which is elastically deformed by the pressing force from the protective sheet 24 and elastically restored by the release of the pressing force from the protective sheet 24. The component board 3 on which the other electronic component 30 is mounted is placed with the side on which the tactile switch 2 is mounted facing upward.

Subsequently, the PET mixed paper 40 made of PET fibers and plant fibers is laminated on the component substrate 3. At that time, since the first opening 41 is provided in a part of the PET mixed paper 40, the tactile switch 2 is accommodated so as to be exposed on the surface of the PET mixed paper 40.

Subsequently, a resin sheet 510a made of PETG resin containing no plant fiber is laminated on the PET mixed paper 40, an adhesive sheet 60 is laminated on the resin sheet 510a, and further from the PET resin on the adhesive sheet 60. The resin sheet 500a is laminated so as to form a gap between the resin sheet 500a and the protective sheet 24 of the tactile switch 2, thereby preparing the card medium laminate 10 before hot pressing and having the first finishing layer 5a. Further, the adhesive sheet 60 has a second opening 61 aligned with the first opening 41 of the PET mixed paper 40, and the second opening 61 is from the edge of the first opening 41. Since the protrusion 62 is provided so as to project inward, the protrusion 62 is arranged so as to overlap the tactile switch 2 housed in the first opening 41 in a plan view.

1. 1. Evaluation of the click feeling of the card medium The click feeling of the resin card medium was evaluated by measuring the load (N) when the tactile switch was pressed and the stroke (mm) when the tactile switch was pressed. ..

FIG. 6 shows a “weight-stroke curve” showing the behavior of the dome-shaped leaf spring 22 of the tactile switch 2 such as the resin card medium 1 according to the present embodiment. The vertical axis of the graph of FIG. 6 shows the weight (N) when the tactile switch 2 is pressed with the resin layer 50a of the first finishing layer 5a interposed therebetween, and the horizontal axis shows the tactile switch 2. The stroke (mm) at the time of the pressing operation is shown.

As shown in the graph of FIG. 6, when the tactile switch 2 is pressed from the OFF state to the ON state, the leaf spring 22 is elastically deformed at first, so that the load of the pressing operation increases as the stroke increases. It increases and reaches the buckling point (hereinafter referred to as "OF (Operation Force) value") which is the peak value. After that, the leaf spring 22 is inverted and deformed, so that the load of the pressing operation decreases as the stroke increases, and the top of the leaf spring 22 comes into contact with the connection terminal of the switch board, so that the return point is the bottom value. (Hereinafter, it is referred to as "RF (Return Force) value"). Further, when the tactile switch 2 is pressed from the ON state to the OFF state, the weight of the pressing operation follows a trajectory substantially opposite to the weight-stroke curve described above.

In addition, among the click feelings generally felt by fingers, as an index for obtaining a sharp, crisp, and clear click feeling, the following formula 1 is used, and the click rate obtained from the weight-stroke curve is 20% or more. It is said that it is good to be in the range.
Click rate (%) = (OF value-RF value) / OF value x 100 ... Equation 1

FIG. 4 shows a partially enlarged cross section of the resin card medium 1a of Example 2 according to another embodiment of the present invention in the vicinity of the tactile switch 2, and FIG. 5 shows a comparative example. The cross section of the resin card medium 1b in the vicinity of the tactile switch 2 is partially enlarged and shown.

In addition to the resin card medium 1 of Example 1 according to the above-described embodiment, the resin card medium 1a of Example 2 and the resin card medium 1b of Comparative Example 1 are produced, and the dome shape of each tactile switch 2 is produced. The behavior and click feeling of the leaf spring 22 of the above were investigated.

2. Appearance evaluation of card medium Regarding the appearance of resin card medium, the maximum distance from the flat surface of the surface plate is measured using a laser displacement sensor (LK-030 manufactured by KEYENCE) in all parts of the convex surface of the card, and light is also used. Was evaluated by visually confirming whether or not the unevenness could be visually recognized regardless of the angle at which the surface of the resin card medium was irradiated.

[Example 1]
The second opening 61 of the adhesive layer 6 has a protruding portion 62, and a gap d is provided between the resin layer 50a of the first finishing layer 5a and the protective sheet 24 of the tactile switch 2. The resin card medium 1 according to the present embodiment was designated as Example 1 (FIGS. 1 and 2). The weight-stroke curve 7 of the tactile switch 2 of the first embodiment is shown in FIG.

[Example 2]
Example 2 is a resin card medium 1a having the same configuration as that of Example 1 except that a gap d is provided between the resin layer 50a and the protective sheet 24, but the protrusion 62 is not provided. FIG. 4). The weight-stroke curve 7a of the tactile switch 2 of the second embodiment is shown in FIG.
→ The presence or absence of adhesive squeeze affects only the beauty, so if the gap d is the same, the click feeling is the same, so isn't Fig. 7a (Fig. 7b before correction) unnecessary?
⇒Fig. 7a (before correction, Fig. 7b) is necessary to prove that the presence or absence of adhesive squeeze out has almost no effect on the click feeling and only affects the beauty.

[Comparative Example 1]
Comparative Example 1 was a resin card medium 1b having the same configuration as that of Example 1 except that a gap d was not provided between the resin layer 50a and the protective sheet 24 and the protrusion 62 was not provided. The weight-stroke curve 8 of the tactile switch 2 of Comparative Example 1 is shown in FIG.

From FIG. 6 and Equation 1, in the case of the resin card medium 1 of Example 1, the weight of the tactile switch 2 − the click rate obtained from the stroke curve 7 is 20%, and the weight of the tactile switch 2a of Example 2 − The click rate obtained from the stroke curve 7a was 20%. On the other hand, the click rate obtained from the weight-stroke curve 8 of the tactile switch 2 of Comparative Example 1 was 3%.

As a result, comparing Examples 1 and 2 with Comparative Example 1, the certainty of ON-OFF of the switch and a clear click feeling can be obtained even by the pressing operation with the resin layer 50a of the first finishing layer 5a interposed therebetween. In order to obtain the resin layer 5, the resin layer 5 in the first finishing layer 5a facing the protective sheet 24 has been found to be effective to be arranged so as to form a gap d between the resin layer 5 and the protective sheet 24. ..

FIG. 7 (a) shows a cross-sectional view of the card medium 1 in which the vicinity of the tactile switch 2 of the first embodiment is partially enlarged, and FIG. 7 (b) shows the surface layer of the card medium 1 of the (a). A schematic cross-sectional view showing a further enlarged portion is shown. Further, FIG. 8A is a cross-sectional view of the card medium 1b in which the vicinity of the tactile switch 2 of Comparative Example 1 is partially enlarged, and FIG. 8B is a surface layer portion of the card medium 1b of FIG. A schematic cross-sectional view is shown which is a further enlargement of.

As can be understood by comparing FIG. 7 and FIG. 8, the card medium 1 of the first embodiment in which the protruding portion 62 is provided in the second opening 61 of the adhesive layer 6 is the resin of the first finishing layer 5a. The unevenness of the layer 50a was approximately 0 μm, and the unevenness on the surface of the card medium 1 could not be visually confirmed. On the other hand, the card medium 1a of the second embodiment in which the protruding portion 62 was not provided was particularly the first. It was found that at the edge of the opening 41 of No. 1, a dent of about 20 μm was formed in the resin layer 50a of the first finishing layer 5a, and unevenness on the surface of the card medium 1 could be visually confirmed. In this way, by providing the protruding portion 62 in the second opening 61 of the adhesive layer 6, the edge (corner portion) of the first opening 41 is covered with the protruding portion 62, and the surface layer of the card medium 1 is formed. It has been found that when the support span of the resin layer 50a is narrowed, it is possible to effectively prevent the surface layer of the card medium 1 from having irregularities, and it is possible to maintain a beautiful appearance.

1,1a, 1b ... Resin card medium 10 ... Card medium laminate 2 ... Tactile switch 20 ... Switch board 21a, 21b ... Connection terminal 22 ... Leaf spring 23 ... Case 24 ... Protective sheet 240 ... Through hole, through slit 3 ... Parts board 30 ... Electronic parts 31 ... Battery 4 ...・ Plant fiber-containing resin layer 40 ・ ・ ・ ・ Mixed paper (PET mixed paper)
41 ... First opening 5a ... First finishing layer 50a ... Resin layer (PET)
500a ... Resin sheet (PET)
51a ... Resin layer (PETG)
510a ... Resin sheet (PETG)
5b ... Second finishing layer 50b ... Resin layer (PET)
500b ... Resin sheet (PET)
51b ... Resin layer (PETG)
510b ... Resin sheet (PETG)
6 ... Adhesive layer 60 ... Adhesive sheet 61 ... Second opening 62 ... Overhanging parts 7, 7a ... Weight-stroke of the tactile switch of Examples 1 and 2. Curve 8: Weight-stroke curve of the tactile switch in Comparative Example 1 d: Gap

Claims (14)

A switch board with multiple connection terminals formed on the top surface,
A dome-shaped leaf spring provided on the switch board, the peripheral portion of which is in contact with the connection terminals on both sides, and the top portion of which is located above the central connection terminal.
A case provided on the switch board and forming a space for accommodating the leaf spring, and a protection fixed to the upper surface of the case to hold the leaf spring in the space of the case. A component board having a tactile switch with a seat and on which the tactile switch and other electronic components are mounted.
A plant fiber-containing resin layer containing plant fibers laminated on a component substrate on the side on which the tactile switch is mounted, and by providing a first opening in a part thereof, the tactile switch is provided. The plant fiber-containing resin layer containing the plant fiber-containing resin layer so as to be exposed on the surface of the plant fiber-containing resin layer.
In a resin card medium provided with a first finishing layer composed of one or more resin layers not containing plant fibers, which is laminated on the plant fiber-containing resin layer.
The resin card medium according to claim 1, wherein the resin layer in the first finishing layer facing the protective sheet is arranged so as to form a gap between the resin layer and the protective sheet. On the back surface of the resin layer arranged on the outermost surface of the first finishing layer, an adhesive layer for fixing to the lower layer arranged on the back surface side of the resin layer is laminated, and the adhesive layer Has a second opening aligned with the first opening of the plant fiber-containing resin layer.
The second opening has a protruding portion protruding inward from the edge of the first opening so as to overlap the tactile switch housed in the first opening in a plan view. The resin card medium according to claim 1, wherein the card medium is provided. The resin card medium according to claim 1 or 2, wherein the protective sheet has a through hole and / or a through slit for venting gas. The invention according to any one of claims 1 to 3, wherein the plant fiber-containing resin layer is further laminated on the surface of the component substrate on the side opposite to the side on which the tactile switch is mounted. Resin card medium. The first finishing layer is composed of two or more resin layers.
On the surface of the component substrate on the side opposite to the side on which the tactile switch is mounted or on the plant fiber-containing resin layer above it, a second finishing layer composed of two or more resin layers not containing plant fibers. Are laminated, and each resin layer of the first finishing layer and each resin layer of the second finishing layer have the same configuration as each other, and each resin of the first finishing layer. Any of claims 1 to 4, wherein each of the layer and each resin layer of the second finishing layer is arranged so as to be symmetrically positioned with the plant fiber-containing resin layer interposed therebetween. The resin card medium according to item 1. Each of the resin layers of the first finishing layer has the same thickness as each resin layer of the second finishing layer arranged symmetrically with respect to the plant fiber-containing resin layer. The resin card medium according to claim 5. Each of the resin layers of the first finishing layer is formed of the same material as each resin layer of the second finishing layer, which is arranged symmetrically with respect to the plant fiber-containing resin layer. The resin card medium according to claim 5 or 6. The resin product according to any one of claims 1 to 7, wherein the total thickness of the component substrate and the thickness of the electronic component is 80% or less with respect to the total thickness of the card medium. Card medium. The step of preparing a second finishing layer consisting of two or more resin sheets that do not contain plant fibers,
A tactile switch and other electronic components equipped with a dome-shaped leaf spring that elastically deforms due to the pressing force from the protective sheet and elastically returns when the pressing force from the protective sheet is released are mounted on the second finishing layer. The step of placing the component board with the side on which the tactile switch is mounted facing up, and
A mixed paper made of plastic fibers and plant fibers having a first opening in a part thereof is laminated on the component substrate so as to expose the tactile switch on the surface of the mixed paper. Steps and
In the step of laminating a first finishing layer made of two or more resin sheets containing no plant fibers on the mixed paper, the back surface of the resin sheet arranged on the uppermost surface of the first finishing layer is said to be the same. A card medium laminate before heat pressing is prepared by including a step for further laminating an adhesive sheet for fixing to a lower sheet arranged on the back surface side of the resin sheet, and the card medium laminate is made of the plastic. In a method for producing a resin card medium by hot pressing at a temperature equal to or higher than the softening point of the fiber and lower than the melting point.
The adhesive sheet has a second opening that is aligned with the first opening of the mixed paper.
The second opening has a protruding portion protruding inward from the edge of the first opening so as to overlap the tactile switch housed in the first opening in a plan view. I have
A method for producing a resin card medium, wherein the resin layer in the first finishing layer facing the protective sheet is arranged so as to form a gap between the resin layer and the protective sheet. The method for manufacturing a resin card medium according to claim 9, wherein the protective sheet has a through hole and / or a through slit for venting gas. Each resin sheet of the first finishing layer and each resin sheet of the second finishing layer before hot press molding have the same configuration as each other, and each resin sheet of the first finishing layer. The method for producing a resin card medium according to claim 9 or 10, wherein each of the resin sheets of the second finishing layer and the resin sheet of the second finishing layer are arranged at symmetrical positions with the mixed paper. Each of the resin sheets of the first finishing layer before hot press molding is the same as each resin sheet of the second finishing layer before hot press molding, which is arranged at symmetrical positions across the first mixed paper. The method for manufacturing a resin card medium according to claim 11, wherein the resin card medium has a thickness. Each of the resin sheets of the first finishing layer before heat press molding is made of the same material as each resin sheet of the second finishing layer arranged at symmetrical positions across the mixed paper. The method for manufacturing a resin card medium according to claim 11 or 12. According to claim 9, the total thickness of the component substrate and the thickness of the electronic component is adjusted to be 80% or less of the thickness of the resin card medium after hot press molding. 13. The method for manufacturing a resin card medium according to any one of 13.

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