JP2000326618A - Manufacture of multidirectional ductile sheet material, and multidirectional ductile sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a sheet material having multidirectional ductility so as to simply obtain a clear finish even in the case of adhering to a shape adopting many round corners each having a small size and a small radius of curvature like a telephone set and the sheet material having such multidirectional ductility. SOLUTION: A marking film (having a base material portion 2 and an adhesive layer 6) having a material of excellent elongation properties such as a vinyl chloride or the like is impregnated with a large quantity of a connecting agent made of ink exhibiting much flexibility after drying from its front surface side to form a connecting reinforcing layer 3. The agent becomes a solvent bonding state to the portion 2 of the film so that overall elongation properties can be remarkably enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a sheet material and a sheet material.

[0002]

2. Description of the Related Art In recent years, in telephones such as portable telephones and PHSs, as a means for differentiating from others (expressing individuality), changing the telephone body to a desired design or a desired color is one way. May be performed. There is painting as a method of realizing this, but for this painting, the telephone must be checked out to a specialized painter for a predetermined period (one to several weeks), and during that time, the telephone cannot be used. is there.

[0003] On the other hand, a seal made of a resin film of vinyl chloride or the like having a characteristic of abundant elongation is commercially available, and the seal is purchased by the owner of the telephone (or a company that pastes the seal). There is also a method of performing processing such as making a button hole by itself, and then attaching it to the entire outer surface or only the front surface of the telephone.

[0004]

The above-mentioned commercially available seal has a large elongation, but has a small size like a telephone and has a large number of rounded portions having a small radius of curvature. If you want to stick it on the entire outer surface, bend it along the radius while carefully and slowly spreading it while avoiding cracks while heating it appropriately with a heater such as a dryer. It had to be. Such work requires not only a high level of skill, but also a long-term concentration while maintaining close attention, and it is not something that ordinary people can easily go to and obtain a beautiful finish Did not.

[0005] Therefore, this kind of seal is mainly used to be attached to a relatively flat part such as only on the front of the telephone, and in the case of dressing up the telephone, it is difficult to apply it by painting. Was inferior to. The present invention has been made in view of the above circumstances, and is simple even in a case where the present invention is attached to a small-sized phone such as a telephone and a shape in which a radius portion having a small radius of curvature is frequently used. And a method for producing a sheet material having ductility (that is, a property that elongation is extremely abundant under conditions where cracks and the like do not occur) so as to obtain a beautiful finish, and a method for producing such a sheet material. An object is to provide a sheet material having ductility.

[0006]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, in the method for producing a multi-ductile sheet material according to the present invention, an ink showing abundant flexibility after drying, on at least one surface of the marking film by screen printing set to a mesh coarser than the standard use standard of the ink. Apply,
It is manufactured by drying. When screen printing is performed with such a coarse mesh, the supply amount and application amount of ink to the marking film can be extremely increased, and as a result, a state in which the marking film is impregnated with ink in a solvent can be reliably obtained. It is something that can be done. Accordingly, the extensibility of the marking film itself is synergistically enhanced by the flexibility of the ink, and the resulting sheet material has a remarkably high ductility.

[0007] For this reason, this sheet material can be easily attached to a small-sized one having a large radius portion with a small radius of curvature, such as a telephone, and has a beautiful shape. Finish can be obtained. Although a single cycle of applying and drying the ink has been found to have a favorable effect, the cycle is repeated a plurality of times, especially 2 times.
Experiments have shown that better results can be obtained by repeating the process about once. An example of screen printing of ink is the standard mesh size used (the number of meshes determined by the ink maker to obtain the best results when this ink is used as specified). As a result of experiments, it has been confirmed that when the size is around 200 mesh, it is preferable to set the size to 120 mesh, which is almost twice as large.

It has been found that good results can be obtained by heating in the drying performed after the application of the ink. In this case, it is preferable to set the heating temperature to 30 ° C. or more and 80 ° C. or less. In the case where the ink is air-dried without heating or the temperature is less than 30 ° C. even if heated, the flexibility of the ink cannot be brought out well. There was an inconvenience such as the appearance of ripples in the pet material.

The best conditions are preferably 60 ° C., and the heating time is preferably about 15 minutes. If the desired pattern is applied to the surface of the ink after drying, the variety of sheet materials can be increased to meet various needs. Even if the ink used in this case does not need to be as flexible as the ink first applied to the marking film, an ink that exhibits flexibility after drying to some extent should be used. To

On the other hand, in the multi-ductile sheet material according to the present invention,
A binder formed by ink showing abundant flexibility after drying is impregnated with a solvent in a base formed by a marking film. If the marking film has a pressure-sensitive adhesive layer on the back side of the base, the marking film can be attached as it is without using an adhesive. Also, it can be easily re-attached. Needless to say, unlike the case of painting, the pasting partner is not dissolved by an organic solvent or the like, so it can be replaced as many times as possible, for example, different designs and colors according to the mood of the day It is also possible to replace with a ductile sheet material.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a multi-ductile sheet material 1 according to the present invention. The multi-ductile sheet material 1 includes a base 2, a connecting reinforcement layer 3 provided in a state where the connecting agent is solvent-impregnated in a partial thickness region or the entire thickness of the base 2, A pattern layer 4 provided on the surface, and a coat layer 5 provided on the surface of the pattern layer 4
And an adhesive layer 6 provided on the back surface of the base 2.

The connecting reinforcing layer 3 shown in FIG.
Is impregnated over the entire thickness of the base 2, and is further provided on the surface of the base 2. A release paper 7 is adhered to the back surface of the adhesive layer 6 to prevent dust and the like from adhering to the adhesive layer 6 until the multi-ductile sheet material 1 is used (attached). The base 2 and the adhesive layer 6 are initially formed by using a marking film in a state where both are integrated at a stage where the connecting reinforcement layer 3 is not provided.

The marking film has a base portion (corresponding to the base 2) formed of a resin material such as vinyl chloride, and has a stretchable portion including the portion corresponding to the adhesive layer 6 as a whole. It has excellent properties in tensile strength and tensile strength. In the present embodiment, the product names “Modical”, “Fuji Paint”, and “Easy Tack” manufactured by Lintec Co., Ltd.
“Reflection sheet” and the like, “Tac Paint” (trade name, manufactured by Sekisui Chemical Co., Ltd.), and “Dynakal” (trade name, manufactured by TOYO Corporation) can also be used.

If the specifications are described for some of the examples, the above-mentioned "modal" has an elongation of 100% or more and a tensile strength of 1.0 kg / 1 when the thickness is 75 to 85 μm.
0 mm was obtained. Incidentally, the heat resistance was such that there was no abnormality even after 80 ° C. for 168 hours. If the “Fuji Paint” has a thickness of 130 μm (including the base portion of 50 μm), the elongation is 60% or more in each of the vertical and horizontal directions, and the tensile strength is 2.0% in each of the vertical and horizontal directions.
kg or more was obtained. Incidentally, the heat resistance was such that there was no abnormality even after 70 ° C. for 240 hours.

The above “Easy Tack” has a thickness of 135 μm.
m (of which the substrate portion is 50 μm), the elongation was 60% or more in each of the vertical and horizontal directions, and the tensile strength was 2.0 kg or more in each of the vertical and horizontal directions. By the way,
The heat resistance was such that there was no abnormality even after 70 ° C. for 240 hours. For this reason, even when this marking film is used alone, it can be adhered flexibly following a curved surface having a relatively small radius of curvature, such as an automobile body. However, according to the test use of the present inventor, it has been found that in the case of the marking film alone, such use on the curved surface is the limit of the range that can be used without requiring heating.

The binder used for forming the reinforcement layer 3 is made of an ink exhibiting abundant flexibility after drying, and has good compatibility with resin materials such as vinyl chloride. ing. Such a binder is used as a base 2
And the like, impregnating the pressure-sensitive adhesive layer 6 causes a solvent-like bonding state. As a result, the extensibility of the base 2, that is, the bonding reinforcement layer 3, in which the bonding agent is impregnated, And the tensile strength will be dramatically increased.

In this embodiment, when the base material portion (the portion corresponding to the base 2) of the marking film is made of vinyl chloride, the product name "Sericol SP2100AU Clear (also known as Sericol V)" manufactured by Teikoku Ink Mfg. Co., Ltd.
KT ink screen coating overcoat clear) ". Further, as other inks, inks such as “Sericol EG Screen Ink (also known as gloss ink for polyester)” manufactured by Teikoku Ink Mfg. Co., Ltd. and “SG700 Series” manufactured by Seiko Advance Co., Ltd. are used. You can also.

According to the specifications of the above-mentioned "Sericol SP2100AU Clear", an elongation at 200 mm / min of 180% and a tensile strength of 2.0 kg / 15 mm were obtained. By the way, its heat resistance is 80 ℃-
No abnormality was found after 168 hours. For this reason, the connecting reinforcing layer 3 in a state where the connecting agent is impregnated into the base 2 and the adhesive layer 6 (the above-mentioned marking film) has a small radius like a telephone and a small radius of curvature. Even in the case of sticking to a shape that has been widely adopted, the elongation becomes extremely abundant under conditions where there is no problem such as cracks, so that a simple and clean finish can be obtained. Characteristic).

The pattern layer 4 and the coat layer 5 may be the same as the linking agent for the linking reinforcing layer 3 but of a different color or clear, or may be of the kind commonly used for film production. Other resin materials to be used may be appropriately selected and used. Next, a manufacturing method according to the present invention for manufacturing the multi-ductile sheet material 1 according to the present invention will be described with reference to FIGS. First, a marking film as an integrated body of the base 2 and the adhesive layer 6 as described above, and an ink that can be used as a binder used to form the binder reinforcing layer 3 are:
It is appropriately selected from the above-mentioned ones as needed.

Then, as shown in FIGS. 2 and 3, the ink 11 is applied to one surface of the marking film 10 by screen printing. The printing plate 12 used in the screen printing is provided with a screen 13 having a mesh coarser than the standard use standard of the ink 11. For example, when the ink 11 is the above-mentioned "Sericol SP2100AU Clear", the standard use standard is about 180 to 225 mesh, and when the ink 11 is the above "Sericol EG screen ink", The standard is considered to be about 230 mesh. Therefore, the screen 13 of the printing plate 12 is set to 120 mesh which is almost twice as large as these standard specifications.

By using the screen 13 having a coarse opening as described above, a considerably large amount of the ink 11 is supplied and applied onto the marking film 10, and as a result, a sufficient amount of the ink 11 can be surely marked. The film 10 is impregnated. FIG. 12 shows an example of a screen printing machine 15 used in this screen printing. The screen printing machine 15 has a setting portion 16 for the printing plate 12 at a central portion, and the upper portion thereof has a structure in which a doctor 17 and a squeegee 18 move. Has become. The printing plate 12 was provided with a screen 13 made of Tetron.

After the application of the ink 11, curing is performed for a predetermined time and the drying of the ink 11 is waited. In this drying,
As shown in FIG. 4, heating may be performed using an appropriate heating device 20. FIG. 13 shows an external view of an example of the heating device 20, which has a built-in hot-air circulation type thermostat (not shown). Needless to say, it is also possible to use other heating methods. In this case, the heating temperature is preferably 30 ° C. or more and 80 ° C. or less. If the temperature is lower than 30 ° C, the ink 1
1 can not bring out the flexibility, and 80 ℃
When the ratio exceeds the limit, there is a problem that a wave appears in the sheet material 1 obtained after the production.

Even if the temperature is in the range of 30 ° C. or more and 80 ° C. or less, if the temperature is lower than 50 ° C., the drying time tends to be prolonged. Small damage may occur, and as a result, it is suitable for practical use to set the temperature to 50 ° C or higher and 70 ° C or lower. The best conditions were set to 60 ° C. and the heating time was set to 15 minutes. However, the above marking film 1
In the specific examples of “0” and “ink 11”, the heat resistance is 7
It clears 0 ° C., or 80 ° C. in some cases, and it is not particularly difficult to avoid that the marking film 10 and the ink 11 are subjected to heat loss by heating itself during drying.

After the ink 11 has dried, the ink 1
The marking film 10 in which the coating film 1 was impregnated and applied was set on the screen printing machine 15 again, and the ink 11 was applied under the same conditions as described above, and then the ink 11 was dried by the heating device 20 under the same conditions as above. Do. By repeating the application and drying cycle of the ink 11 a plurality of times in this way, the impregnation of the ink 11 into the marking film 10 becomes more reliable, and a much richer amount of application can be secured. A sheet material 1 having multi-ductility is obtained.

However, the cycle of application and drying of the ink 11 is not so good as to be repeated many times, and after more than two times, the effect is not remarkably enhanced even if the number of repetitions is increased. From such a thing,
The number of repetitions of the application and drying cycle of the ink 11 is preferably two times. When the application / drying cycle of the ink 11 is completed as described above, the joining reinforcing layer 3 is formed on the marking film 10, but as shown in FIG. Next, a pattern layer 4 is provided on the surface of the connection reinforcing layer 3.

The pattern layer 4 may be formed by a general screen printing method, and a screen printing machine 15 similar to that shown in FIG. 12 may be used. In addition,
As described above, as the ink 23 for the pattern layer 4, an ink having the same level of flexibility as the ink 11 for forming the joining reinforcing layer 3 after drying, or a certain level of flexibility even at a higher level is used. Of course, the same ink as the ink 11 may be used. Printing plate 24 used in screen printing in this case
In this case, the screen 25 contains the desired pattern 26 (including the case without the pattern in some cases). However, unlike the case of forming the joining reinforcing layer 3, the aperture is 230 to 300.
What is necessary is just to use the thing of a mesh.

After the screen printing, the coating layer is dried by heating or air drying, and a coating layer 5 is further provided on the surface of the pattern layer 4 if necessary. Except that the material ink is transparent or colored and transparent, the coating layer 5 is substantially the same in terms of other material properties, the method of forming the coating layer 5, and the like as in the case of the pattern layer 4, or according to the ink used. It is assumed that the method is in accordance with a conventionally known method. Therefore, the detailed description here is omitted. The coat layer 5 is required when the weather resistance and durability of the sheet material 1 are prolonged, and when there is a strong demand for protecting the surface from damage and dirt, it is not impossible to eliminate the need. .

Thus, the multi-ductile sheet material 1 according to the present invention can be manufactured. Next, this sheet material 1
Will be briefly described below. First, as shown in FIG. 6, a transparent sheet 31 that has been repeatedly bonded and peeled off is attached to the front of the mobile phone 30, and a marking tool 32 such as a ballpoint pen is placed on the transparent sheet 31.
The user traces a necessary portion to copy the button position, the display screen position, and the like of the mobile phone 30 onto the transparent sheet 31.

Next, as shown in FIG. 7, this transparent sheet 31 is stuck on the multi-ductile sheet material 1 according to the present invention in an overlapping state. Then, using a knife (not shown), a hole of a predetermined size and a predetermined shape is formed at a predetermined position of the ductile sheet 1 along a marking portion such as a button position or a display screen position transferred to the transparent sheet 31. Let it form. Next, FIG.
As shown in FIG. 5, the release paper 7 on the back side of the multi-ductile sheet 1 having the holes formed thereon is peeled off, and then the multi-ductile sheet 1 is adjusted so that the position of each hole matches the position of the button or the display screen of the mobile phone 30. The mobile phone 30 is attached to the front (that is, only the flat surface portion) while being aligned.

Next, as shown in FIG. 9, the transparent sheet 31 is peeled off from the state of being attached to the portable telephone 30, and then, as shown in FIG. To the mobile phone 30
Bend along the outer circumference of the front part of. Next, after this work is completed on the entire circumference of the front part of the mobile phone 30, as shown in FIG. 11, the mobile phone 30 is adjusted to a half-split position (a joint position between the front cover and the back cover). The peripheral portion of the ductile sheet 1 is trimmed with a cutting tool 35 such as a scissor or a cutter, and then adhered to the outer peripheral side surface of the mobile phone 30.

Then, a small hole is opened with a needle or the like corresponding to the talk port or earpiece of the mobile phone 30. Thereafter, substantially the same operation as described above is performed on the back surface of the mobile phone 30 except for a hole punching operation. Thus, the mobile phone 30
Can be affixed to the entire outer surface of the sheet. By the way, in the method of manufacturing the multi-ductile sheet material 1 according to the present invention, various changes and the like can be made with respect to the details of the type, usage, quantity, work procedure, etc. of the material used, and the multi-ductile sheet material according to the present invention. Regarding 1, also, various embodiments can be considered for its layer forming structure (the presence or absence of the pattern layer 4, the coat layer 5, and the adhesive layer 6), the thickness of each layer, the application, and the like.

Needless to say, the application of the ductile sheet material 1 according to the present invention to the portable telephone 30 is not limited, and it can be carried with a pager, a CD, an MD, or the like, an automobile, a motorcycle, a bicycle, or the like. It can also be used for all kinds of car goods including parts such as the rearview mirror body as well as the car body, stationery, daily necessities, and ornaments used inside and outside the home. The purpose of use is not limited at all, such as so-called pattern replacement, repair or covering of a stained or damaged portion, addition of a one-point pattern, and the like, in addition to expression of individuality.

[0033]

As is clear from the above description, in the method for producing a multi-ductile sheet material according to the present invention, an ink showing abundant flexibility after drying is applied to a marking film by screen printing with a coarse mesh. And drying, and the effect of impregnating the marking film with the ink in a solvent is used, so that a sheet material having sufficient ductility can be obtained. The thus obtained multi-ductile sheet material according to the present invention can be easily attached to a telephone or the like, and a beautiful finish can be obtained.

[Brief description of the drawings]

FIG. 1 is an enlarged schematic view showing one embodiment of a multi-ductile sheet material according to the present invention.

FIG. 2 is an explanatory view showing an initial procedure of a method of manufacturing a multi-ductile sheet material according to the present invention.

FIG. 3 is an explanatory view showing an execution procedure following FIG. 2;

FIG. 4 is an explanatory diagram showing an implementation procedure following FIG. 3;

FIG. 5 is an explanatory diagram showing an execution procedure following FIG. 4;

FIG. 6 is an explanatory diagram showing an initial procedure when a multi-ductile sheet material according to the present invention is attached to a mobile phone.

FIG. 7 is an explanatory diagram showing an execution procedure following FIG. 6;

FIG. 8 is an explanatory diagram showing an execution procedure following FIG. 7;

FIG. 9 is an explanatory diagram showing an execution procedure following FIG. 8;

FIG. 10 is an explanatory diagram showing an implementation procedure following FIG. 9;

FIG. 11 is an explanatory diagram showing an execution procedure following FIG. 10;

FIG. 12 is a side view showing an example of the screen printing machine.

FIG. 13 is a front view showing an example of a heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi-ductile sheet material 2 Base 3 Connecting reinforcement layer 4 Pattern layer 5 Coat layer 6 Adhesive layer 7 Release paper 10 Marking film 11 Ink 12 Printing plate 13 Screen 15 Screen printing machine 20 Heating device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Mototsuru Hasegawa 1-14-21 Kamikita, Hirano-ku, Osaka, Osaka F-term (reference) 2H113 AA03 AA04 BA10 BA22 BB08 BB32 CA05 CA46 DA49 EA00 FA10 FA36

Claims (9)

[Claims] 1. An ink (11) showing abundant flexibility after drying is applied to at least one surface of a marking film (10) by screen printing set to a mesh coarser than a standard use standard of the ink (11). And producing the sheet material after drying. 2. The method according to claim 1, wherein the application and drying cycle of the ink (11) is repeated a plurality of times. 3. The method for producing a multi-ductile sheet material according to claim 2, wherein the number of repetitions of the application / drying cycle of the ink (11) is two. 4. The method according to claim 1, wherein when the standard number of meshes used for screen printing in the ink (11) is around 200 meshes, the actual number of meshes used is set to 120 meshes. 3. The method for producing a multi-ductile sheet material according to any one of 3. 5. The multi-ductile sheet according to claim 1, wherein the ink (11) is dried by heating, and the heating temperature is set to 30 ° C. or more and 80 ° C. or less. The method of manufacturing the material. 6. The heating time of the ink (11) is about 15 hours.
The method for producing a multi-ductile sheet material according to any one of claims 1 to 5, wherein 7. The multi-ductile sheet material according to claim 1, further comprising, after drying the ink (11), applying a desired pattern with an ink exhibiting flexibility after drying. Production method. 8. A method according to claim 1, wherein the base (2) formed by the marking film (10) is impregnated with a binder by an ink (11) exhibiting abundant flexibility after drying. Ductile sheet material. 9. The marking film (10) has a pressure-sensitive adhesive layer (6) on the back side of the base (2), and the ink (11) is also applied to the pressure-sensitive adhesive layer (6). 9. The multi-ductile sheet material according to claim 8, which is impregnated with a solvent.