JP2005271412A - Laminated film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective film which can easily remove scratches or contamination when the protective film which is pasted on the display screen of a cellular phone or the like is scratched or contaminated. <P>SOLUTION: This laminated film 1 is equipped with a film section 11 or the like including a transparent resin layer 13, an adhesive layer 14 for fixing the transparent resin layer 13 and so forth, and a protruding section 3 on which the adhesive layer 14 is removed for peeling the transparent resin layer 13 and the adhesive layer 14. The laminated film is constituted by laminating a film section having the same structure as the film section 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a film that protects a liquid crystal display part of a portable information device such as a mobile phone, and more particularly to a laminated film that is attached to the liquid crystal display part to protect it from scratches and dirt.

  Currently, mobile phones are used by many people, and when using the phone, the liquid crystal display of the mobile phone touches the user's face. Frequently, the display contents become dirty and the display content becomes difficult to see. In addition, even when men who do not use makeup use, sebum or dust adheres to the liquid crystal display part, making it difficult to view the display contents. Therefore, it has been proposed to use a super-fine fiber cloth that wipes off the dirt on the liquid crystal display part, but it may take time to wipe off, scratches may occur during wiping, or if the ultra-fine fiber cloth itself becomes dirty In some cases, the dirt could not be removed.

On the other hand, in order to prevent the liquid crystal display part of a mobile phone from being scratched or soiled, a technique in which a transparent member is attached to the liquid crystal display part has been proposed in Patent Documents 1 and 2, for example.
Patent Document 1 discloses a protective plate made of a transparent material that is retrofitted to a display display plate of a mobile phone in order to protect the display display plate of a mobile phone and eliminate scratches, and an outer peripheral edge of the back surface of the protective plate. What is provided with the adhesive applied to an edge is disclosed.

Patent Document 2 discloses a protective plate including a substrate portion made of a transparent resin material attached to an information display portion of a mobile phone, and an adhesive portion provided on the back surface of the substrate portion. What is bonded to the information display unit is disclosed. Further, the substrate portion is made of a deformable and recoverable elastomer having a thickness of 0.5 mm or more and 3.0 mm or less, and a chamfered portion having a rounded outer peripheral edge on the surface of the substrate portion. It is formed.
Registered Utility Model No. 3025389 Japanese Patent No. 2883061

  Although what was described in patent documents 1 and 2 can certainly protect the liquid crystal display part of a cellular phone from a crack and dirt with a protection board, when a protection board is damaged, the protection board is replaced, When the protective plate becomes dirty, it is necessary to wipe off the protective plate periodically with the above-described ultrafine fiber cloth, which is very troublesome for the user.

  The present invention provides a protective film that can easily remove scratches and dirt without replacing the protective film or wiping off the dirt when the protective film to be attached to a display screen of a mobile phone is damaged or dirty. The purpose is to do.

  The laminated film of the present invention solves the above-mentioned problem, and according to the invention of claim 1, is a transparent film that adheres to and protects the display unit 7 of the information device 5, and is a transparent resin layer. 13 and the like, an adhesive layer 14 for fixing the transparent resin layer 13 and the like, and a peeling part 3 for peeling the transparent resin layer 13 and the adhesive layer 14 etc. are provided. The film portion 11 and the like are laminated.

  According to a second aspect of the present invention, the peeling portion 3 is formed so as to be distinguishable from the transparent resin layer 13 and the like. According to the invention described in claim 3, the peeling portion 3 is a convex portion 3 formed on the outer periphery of the film portion 1 or the like. According to the invention described in claim 4, the peeling portion 3 is characterized in that the adhesive layer 14 and the like are removed. According to a fifth aspect of the present invention, the peeling portion is formed integrally with the transparent resin layer. According to the invention described in claim 6, the silicon layer 11 or the like is formed on one surface of the transparent resin layer 12 or the like, and the adhesive layer 13 or the like is formed on the other surface. .

  According to the invention described in claim 7, at least one layer of the laminated film portions 11 and the like is a printed film portion 71 having a printing surface. According to the invention described in claim 8, the printing film portion 71 is printed with a first transparent resin layer 73, silicon 72 formed on one surface of the first transparent resin layer 73, characters, patterns, and the like. A second transparent resin layer 75 having a possible printing surface; and an adhesive layer 74 that bonds the second transparent resin layer 75 to the surface of the first transparent resin layer 73 on the side where the silicon layer 72 is not formed; And an adhesive layer 76 formed on the surface of the second transparent resin layer 75 on the side where the adhesive layer 74 is not formed. According to invention of Claim 9, the said printing film part 71 is a film part located in the lowest layer, It is characterized by the above-mentioned.

  The invention according to claim 10 is characterized in that a release film portion 81 is attached to the adhesive layer 76 of the film portion 71 located at the lowermost layer. According to the invention of claim 11, the silicon layer 82 is formed on one surface of the release film portion 81, and the surface on which the silicon layer 82 is formed is the adhesive layer of the lowermost film portion 71. It adheres to 76, It is characterized by the above-mentioned. According to a twelfth aspect of the present invention, the release film portion 81 has a larger area than the film portion 11 or the like.

  According to the invention described in claim 13, calendars are respectively formed on the laminated film portions 11 and the like.

  According to the laminated film of the present invention, when the film surface is soiled or scratched on the film surface, the uppermost film portion is removed from the peeled portion with a finger or peeled off with a nail. Since the lower-layer film portion free from dirt is exposed to the outside world, there is no need to remove dirt on the film surface or peel off the entire film for replacement.

Further, by providing the silicon layer, it is possible to effectively prevent the adhesive layer of the upper film portion from remaining on the surface of the lower film portion when the upper film portion is peeled off.
Furthermore, a character, a figure, etc. can be printed by printing etc. on a printing film part. Moreover, it becomes possible to use for advertisement, without deteriorating the peeling property between films.

  In addition, by sequentially peeling the film part on which the calendar is formed, new film parts are exposed one after another, and the surface of the laminated film can be provided without any scratches or dirt.

  The laminated film of the present invention is a multilayer film for protecting a liquid crystal display part of a portable information device such as a mobile phone from dirt and scratches. Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.

  FIG. 1 is a plan view of a laminated film 1 of the present invention. The laminated film 1 has a substantially rectangular shape, and a first film portion to a seventh film portion, which will be described later, are laminated via an adhesive layer. Further, the first film portion to the seventh film portion constituting the multilayer film have the same shape in a plan view of FIG. As shown by hatching in FIG. 1, a convex portion (peeling portion) 3 protruding in the right outer direction is formed on the upper right side of the laminated film 1. In the region of the convex portion 3, the laminated film 1 has the adhesive layer between the laminated film portions removed. Therefore, the uppermost film portion can be easily peeled off from the convex portion 3 by turning it with a finger or peeling it off with a nail.

  In addition, the shape of the laminated film 1 needs to be large enough to cover the liquid crystal display surface of a standard mobile phone. In the present embodiment, the laminated film 1 has a rectangular shape of 50 mm long × 40 mm wide. Moreover, the protrusion length of the convex part 3 from the right end part of the laminated film 1 to the right outer side is 4 mm, and the protrusion width of the convex part 3 from the right end part of the laminated film 1 to the right outer side is 6 mm. In addition, the size of the convex part 3 is not limited as long as it can be turned with a finger or a nail. For example, the protrusion length can be arbitrarily changed within a range of 3 mm to 5 mm, and the protrusion width can be arbitrarily changed within a range of 3 mm to 10 mm. . Further, the position and size of the convex portion 3 are not limited to those described above, and can be formed so as to protrude outward from an arbitrary portion of the outer peripheral edge of the laminated film 1. Furthermore, it is also possible to remove a part of the adhesive layer at the corner portion of the laminated film 1 to form a peeling portion without configuring the peeling portion as a convex portion as described above.

  2 is a cross-sectional view taken along line AA in FIG. The laminated film 1 according to the present embodiment is attached to the lower layer of the seventh film part 71 and the seven-layer film part laminated from the uppermost first film part 11 to the lowermost seventh film part 71. It is comprised from the peeling film part 81 made. In addition, in this Embodiment, although the laminated | multilayer film 1 demonstrates what was laminated | stacked on 7 layers, it is not limited to 7 layers, If it is 2 layers or more, it can be set as arbitrary several layers.

  The first film portion 11 includes, in order from the top of FIG. 2, a silicon layer 12, a transparent resin layer 13 in which the silicon layer 12 is integrated, and an adhesive layer 14 formed on the lower surface of the transparent resin layer 13. ing. Each film part of the second film part 21, the third film part 31, the fourth film part 41, the fifth film part 51, and the sixth film part 61 also has the silicon layers 22, 32, 42, 52, 62, transparent resin layers 23, 33, 43, 53, 63, and adhesive layers 24, 34, 44, 54, 64.

  The transparent resin layer 13 or the like is composed of a thin film made of polyethylene terephthalate, which is a transparent resin, the silicon layer 12 or the like is composed of a transparent silicon resin, and the silicon layer 12 or the like is integrally formed on the entire upper surface of the transparent resin layer 13 or the like. Is formed. The adhesive layer 14 and the like are formed on the entire lower surface of the transparent resin layer 13 and the like, and in a state where each film part is laminated, the adhesive layer of the upper film part is attached to the silicon layer of the lower film part and the surface thereof is adhered to the surface. Has the function of fixing. In addition, when the upper film part is peeled off from the lower film part, the silicon layer 12 and the like prevent the adhesive layer of the upper film part from separating from the upper film part and remaining on the surface of the lower film part. In addition, the transparent resin layer is protected from friction and dirt.

  The lowermost seventh film portion (printing film portion) 71 includes, in order from the top of FIG. 2, a silicon layer 72, an upper transparent resin layer 73, an adhesive layer 74, a lower transparent resin layer 75, and an adhesive layer 76. It is composed of A dye for printing characters and patterns cannot be attached to the upper surface of the silicon layer 72 due to the characteristics of the silicon resin. Therefore, a lower transparent resin layer 75 having no silicon layer is provided under the upper transparent resin layer 73, and characters and patterns are printed on the surface of the lower transparent resin layer 75 in advance. The lower surface on which the layer 72 is not formed and the upper surface on which characters and the like of the lower transparent resin layer 75 are printed are bonded and integrated by a transparent adhesive layer 74.

  The release film portion 81 includes a silicon layer 82 and a transparent resin layer 83 in order from the top. The adhesive layer 76 of the seventh film portion 71 is positioned on the upper surface of the silicon layer 82 of the release film portion 81. In addition, although the peeling film part 81 is not illustrated in FIG. 1, since the peeling film part 81 has a larger area than the laminated film 1 of FIG. 1, the outer periphery of the laminated film 1 is shown in FIG. The peeling film part 81 protrudes from the end surface, and the peeling film part 81 can be easily peeled off from the laminate composed of the first film part 11 to the seventh film part 71.

  Polyethylene terephthalate (PET) was used as the transparent resin for forming the transparent resin layer 13 and the like, but other transparent resins, for example, acrylic resins such as polyester and polymethyl methacrylate (PMMA), triacetyl cellulose, Any of polysulfone, polyarylate, and polycarbonate can be used.

  As the pressure-sensitive adhesive forming the above-mentioned pressure-sensitive adhesive layer 14 and the like, an emulsion type pressure-sensitive adhesive PL thin manufactured by Lintec Corporation was used, as long as it has transparency that does not decrease the visibility of the display device. For example, any of adhesives such as acrylic adhesives, silicone adhesives, polyester adhesives, rubber adhesives, polyurethane adhesives, and the like can be used. Moreover, these adhesives can be used individually or in combination of 2 or more types.

In addition, as the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 76 and the like, the re-peelable pressure-sensitive adhesive M-4 manufactured by Lintec Corporation was used, but the above-mentioned pressure-sensitive adhesive can also be used.
Moreover, as an adhesive agent used for the above-mentioned adhesive layer 74, a phenol resin adhesive, a resorcinol resin adhesive, a phenol-resorcinol resin adhesive, an epoxy resin adhesive, a urea resin adhesive, a polyurethane adhesive Adhesives, thermosetting resin adhesives such as polyaromatic adhesives, and thermoplastic resin systems such as vinyl acetate resin, acrylic resin, ethylene vinyl acetate resin, polyvinyl alcohol, polyvinyl acetal, vinyl chloride, nylon, cyanoacrylate resin Adhesives, rubber adhesives such as chloroprene adhesives, nitrile rubber adhesives, styrene butadiene rubber adhesives, and natural rubber adhesives can be used.

  In FIG. 3, the state which affixed the laminated | multilayer film 1 of this invention on the liquid crystal display part 7 of the mobile telephone 5 is shown. When the laminated film 1 is attached to the mobile phone 5, the release film portion 81 is first peeled off, and the adhesive layer 76 of the seventh film portion 71 is exposed, and the adhesive layer 76 is attached to the liquid crystal surface of the mobile phone 5. The laminated film 1 is fixed to the mobile phone 5 by being attached to the part 7.

  Therefore, when the laminated film 1 is first attached to the display surface of the mobile phone, the silicon layer 12 of the uppermost first film portion 11 is exposed to the outside, and the lowermost seventh film portion 71 is adhered. The layer 76 becomes a surface attached to the liquid crystal display unit 7. Further, in this state, the convex portion 3 is not in contact with the liquid crystal display portion 7 and is located on the inclined portion of the casing of the mobile phone 5 located around the display portion 7. 5 is not in contact with the casing 5 and it is easy to pick the convex part 3 with a finger or peel it off with a nail.

  In the present invention, the film thickness of a single film portion composed of the above-described silicon layer, transparent resin layer, and adhesive layer can be made extremely thin, for example, from 16 μm to 50 μm. Affixing such thin film parts to the display surface of a cellular phone one by one is usually easier to bend the thinner the film part, and distortion will occur at the time of pasting, and there will always be uneven tension. Therefore, the film part cannot be pasted in a completely flat state.

  On the other hand, in the laminated film 1 of the present invention, each film portion is very thin, but is laminated as described above to form 7 layers, so that the laminated film 1 is integrated. Then, compared to the case of only one sheet, it is difficult to bend as a whole, and it is effective that the film part is distorted when affixed to the display part of the mobile phone, and bubbles are generated between the display part and the film part. Can be suppressed.

  Moreover, you may form a calendar in each film part which comprises the laminated | multilayer film 1, respectively. In this case, with respect to the calendar month formed in the upper film portion, the calendar portion formed in the lower film portion is sequentially arranged so that the next month of the upper calendar is positioned. Need to be laminated. In addition, when forming a calendar, make all the film parts into the same structure as the printing film part 71, or remove the silicon layer from the transparent resin layer and print the calendar on the removed part. You can also. Further, when a calendar is formed and laminated at the same position on the film portion, it is necessary to print each calendar on a white background so that the lower calendar is not visible from the upper calendar. Moreover, not only a calendar but arbitrary patterns may be formed.

  In the present embodiment, the case where the laminated film 1 is attached to the mobile phone 5 has been described. However, the present invention is not limited to the mobile phone, and is not limited to the mobile phone. It can also be used to protect a liquid crystal display portion of a computer. When applying to these, the magnitude | size of the laminated | multilayer film 1, the position and magnitude | size of the convex part 3, etc. can be changed suitably and used.

  Moreover, as shown in the modification of FIG. 4, the laminated film 1 ′ may be arranged in an index shape so that convex portions formed in the respective film portions do not overlap in the laminating direction. In this modification, the position of the convex part 3 of the uppermost film part 11 is the same as that of the embodiment of FIG. 1, but the convex part 3 a of the film part 21 located in the lower layer does not overlap the convex part 3. In FIG. 4, they are shifted downward. Similarly, the convex part 3b of the film part 31, the convex part 3c of the film part 41, the convex part 3d of the film part 51, the convex part 3e of the film part 61, and the convex part 3f of the film part 71 are respectively overlapped with other convex parts. It is arranged not to be. By disposing the convex portions in this way, when the film portion is peeled off, the two pieces can be peeled one by one from the top without being peeled off at the same time.

  In addition, a pattern or a character by a hologram can be formed at the center of the lowermost film portion 71. In this case, when a laminated film having a hologram is attached to the display portion of the mobile phone, the hologram overlaps with the central portion of the display portion of the mobile phone. However, when the display unit is viewed from the vertical direction, light is not reflected by the hologram, and when viewed from a predetermined oblique direction with respect to the display unit, the hologram is reflected by the reflected diffracted light. If the pattern is visible, the hologram will not get in the way.

It is a front view of the laminated film of this invention. It is AA sectional drawing of the laminated | multilayer film of FIG. It is a perspective view which shows the state which affixed the laminated | multilayer film of this invention on the display surface of the mobile telephone. It is a front view of the modification of the laminated | multilayer film of this invention.

Explanation of symbols

1, 1 'Laminated film 3 Convex parts 3a, 3b, 3c, 3d, 3e, 3f Convex part 5 Mobile phone 7 Display surface 11 First film part 21 Second film part 31 Third film part 41 Fourth film part 51 First 5 film part 61 6th film part 71 7th film part 81 Release film part 73 Upper transparent resin layer 75 Lower transparent resin layer 12, 22, 32, 42, 52, 62, 72, 82 Silicon layers 13, 23, 33, 43, 53, 63, 83 Transparent resin layer 14, 24, 34, 44, 54, 64, 74 Adhesive layer

Claims (13)

A transparent film that adheres to and protects the display part of information equipment,
A film part including a transparent resin layer, an adhesive layer for attaching the transparent resin layer, and a peeling part for peeling off the transparent resin layer and the adhesive layer;
A laminated film comprising the film portions laminated. The laminated film according to claim 1, wherein the peeling portion is formed to be distinguishable from the transparent resin layer. The laminated film according to claim 2, wherein the peeling portion is a convex portion formed on an outer periphery of the film portion. The laminated film according to any one of claims 1 to 3, wherein the peeling layer has the adhesive layer removed. The laminated film according to any one of claims 1 to 4, wherein the peeling portion is integrally formed with the transparent resin layer. The laminated film according to any one of claims 1 to 5, wherein a silicon layer is formed on one surface of the transparent resin layer and the adhesive layer is formed on the other surface. The laminated film according to any one of claims 1 to 6, wherein at least one layer of the laminated film parts is a printed film part having a printing surface. The printed film portion includes a first transparent resin layer, a silicon layer formed on one surface of the first transparent resin layer, a second transparent resin layer having a print surface on which characters, patterns, and the like can be printed, An adhesive layer for adhering the second transparent resin layer to the surface of the first transparent resin layer on the side where the silicon layer is not formed, and a surface of the second transparent resin layer on the side where the adhesive layer is not formed The laminated film according to claim 7, further comprising an adhesive layer formed on the substrate. The laminated film according to claim 7 or 8, wherein the printed film part is a film part located in a lowermost layer. The laminated film according to any one of claims 1 to 9, wherein a release film portion is attached to the adhesive layer of the film portion located in the lowermost layer. 11. The laminate according to claim 10, wherein a silicon layer is formed on one surface of the release film portion, and the surface on which the silicon layer is formed adheres to the adhesive layer of the lowermost film portion. the film. The laminated film according to claim 1, wherein the release film portion has an area larger than that of the film portion. The laminated film according to any one of claims 1 to 12, wherein a calendar is formed on each of the laminated film portions.

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