JPH09538U - Shading nets for cars - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: As a light-shielding net for automobiles, it has a good light-shielding effect and can be easily and stably applied to an adherend surface such as a window glass surface, and can be detached and reused. We provide products that are easy and have excellent heat resistance and weather resistance. SOLUTION: A relatively fine mesh 12 is formed by weaving a plurality of long glass fibers bundled together into a glass fiber 16, and a resin 18 is coated so as to leave a mesh on the mesh, and the mesh is covered from the front and back. The thread 16 and its intersecting portion are flattened by pressing, and the mesh surface, which is the attachment surface, is made substantially smooth.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a light-shielding net for an automobile, which is attached to a window surface or the like to reduce the incident light from the outside to the inside, to prevent the see-through to the inside, and to allow the view from the inside to the outside.

[0002]

[Prior art]

 Conventional light-shielding products that are attached to the window surface for the purpose of reducing incident light and preventing internal see-through can be broadly classified into paper type, embossed type, and semi-transparent film type, but these are all sheets. It is a thing.

The paper type utilizes opacity and diffuse reflection of the material, and the embossed type similar to stained glass utilizes diffuse reflection and colored absorption, both of which have effects of reducing incident light and preventing internal see-through. Sufficient, but it has the drawback that there is no visibility from inside to outside.

Further, the semi-transparent film type is a film having good see-through efficiency mixed with a reflecting agent and a coloring absorbent, and has the above-mentioned respective effects, but somehow the feeling of strangeness is caused by the mixing agent. However, it still has the drawback that the outlook is not refreshing.

Further, a major drawback common to all of these sheet-like materials is that the work of sticking to the window surface is difficult, and sticking is almost impossible if the window surface used is a curved surface.

[0006]

[Problems to be solved by the device]

 Therefore, the above problems of conventional products are solved, and as a light-shielding net that is attached to and used on the window surface of automobiles, it has three effects: reduction of incident light, prevention of internal visibility, and clear internal visibility. It provides a light-shielding net that is easy to attach to curved surfaces as well as stable and can be used.

[0007]

[Means for Solving the Problems]

 The light-shielding net for automobiles of the present invention is formed by weaving glass fiber yarns in which a number of long glass fibers are bundled to form a net having a relatively fine mesh, and resin coating is applied to leave the mesh on the net. This mesh is characterized by flattening the threads and their crossing portions by pressing from the front and back to make the mesh surface, which is the sticking surface, substantially smooth.

In the above description, it is preferable that the outer surface of the net has a color having a higher reflectance than the inner surface.

[0009]

[Action]

 According to the above-described light-shielding net of the present invention, by applying a resin coating and further pressing, the yarns constituting the net and their intersecting portions are flattened, and the net surface, which is the pasting surface, is smoothed as a whole. Is doing. In particular, the yarn that constitutes the net is a glass fiber yarn in which a large number of long glass fibers are bundled, and the yarn itself is easily flattened by pressing, and even if it is a woven net, it is a sheet with a small thickness as a whole. In addition, the flatness of the thread and the smoothness of the mesh surface, which is the adhesive surface, can be maintained well due to the settability of the resin coating layer on the thread surface, and there is no misalignment of the threads in the vertical and horizontal directions, resulting in a uniform mesh. Can hold.

The shading net of the present invention will be described in response to the conventional problems.

The conventional embossed or film type sheet-like material is partially processed with light such as opaqueness, diffuse reflection, diffuse refraction or color absorption depending on the material, and therefore, each of them is processed. Various defects occur depending on the type.

On the other hand, the light-shielding net of the present invention reduces or adjusts the incident light by the area ratio of the mesh portion that allows light to pass through and the net yarn portion that does not allow light to pass through, and the dazzling caused by the reflected light at the net yarn portion Through operation, it prevents internal see-through, and because the light that passes through the mesh is unprocessed natural light itself, it provides a neat and clear view. As described above, the light-shielding net obtained by the present invention simultaneously has the three effects of reducing incident light, preventing internal visibility, and providing clear internal visibility.

Further, regarding the pasting work, the conventional embossed type or film type sheet-like material requires the use of a water-based adhesive that is slow to dry and can be slid as a pretreatment, but it is still wrinkled or wrinkled. Entrapment of air bubbles is apt to occur, and once they occur, there is a problem that wrinkles and air bubbles must be slid toward the edges one by one or reattached in order to completely remove them. Especially, if the window is a curved surface, this problem becomes more serious. Since the sheet-like material has a flat surface as a basic shape, it naturally does not fit on a curved surface, and in order to make it fit on a curved surface, it is necessary to use advanced technology such as strongly crimping and stretching the sheet itself. , This is almost impossible for an amateur.

On the other hand, in the light-shielding net of the present invention, a net woven from glass fiber yarns in which a large number of long glass fibers are bundled is coated with a resin so as to leave a net, and the net and its cross are pressed by pressing it. Since the part is flattened, the adhesive can be easily applied to the mesh surface, and the whole mesh is strong and wrinkles are more difficult, and since it has a mesh, it does not entrap air bubbles. Furthermore, since the so-called bias effect is exhibited due to the change in the crossing angle of the threads and the change in the mesh shape due to the bending of the threads, it can be attached to a curved surface easily by simply pressing it against the window surface. can do. As described above, the light-shielding net of the present invention can be easily attached to a curved surface as well as a flat surface, because the attachment work is easy and does not take much time.

In addition, the net is generally formed with protrusions that are raised at the intersection of the threads forming the mesh, and if an adhesive is applied to such a normal net, When attached, the contact state with the adhered surface becomes a point contact state with the above-mentioned raised protrusions, the contact ratio to the entire area becomes extremely small, and stable adhesion is hindered. Originally, an adhesive is a viscous substance, and when stress is continuously applied to the adhesive for a long time, if the total adhesive strength is less than the total stress, the adhesive will peel off due to interfacial failure or cohesive failure. Happens. This phenomenon is especially noticeable in a point-contact net having a very small contact ratio.

On the other hand, in the light-shielding net of the present invention, the yarns forming the net and the intersecting portions thereof are flattened as described above to eliminate the protrusions on the net surface, and the net yarn surface Since the entire surface is made almost smooth together with the coating layer of No. 3, the height difference between the crossing portion of the yarn and the adjacent concave portion can be leveled by the settability of the coating layer on the yarn surface, and the net surface can be made smooth. The smooth state can be maintained well. Therefore, the adhesive portion of the adhesive applied to the mesh surface, which is the adhesive surface to the window surface, can be applied to almost the entire smoothed thread of the mesh portion, and thus the adhesive portion to the adherend surface The contact state becomes a line contact state (contact having a width equivalent to that of the flattened yarn), and the contact ratio is significantly increased as compared with the point contact state described above. . In this way, it is possible to always have a sufficiently larger adhesive force than the restoring stress of the bias effect when it is attached to a curved surface, and the attached state is stable.

Further, since the embossed sheet type or film type adhesive sheet-like material is adhered to one side of the adherend surface, when peeling it off, the peeled portion forms a continuous shape and has a large size. Not only does it require force, but the great force causes the sheet to break, making the peeling work cumbersome and making reuse almost impossible.

On the other hand, in the light-shielding net obtained according to the present invention, the adhered surface is only attached by the thread portion to which the adhesive is applied, and the peeling portion when peeling off this is Due to the presence of the mesh, it becomes intermittent and can be easily peeled off with less force and without damaging the net, compared to the case where the sheet is pasted on one surface and the peeled part is continuous. You can Therefore, it can be easily detached and reused.

In addition, in the case of the light-shielding net of the present invention, since the inorganic glass fiber yarn in which the long glass fibers are bundled is used, the toughness is larger than that of other organic fibers, so that it is difficult to bend and wrinkles are more wrinkled. Workability is good because it is difficult. Further, since glass fiber has good heat resistance and weather resistance such as tensile strength and elasticity, it can be used particularly suitably for automobiles.

That is, the window surface of an automobile is exposed to a strong light beam and has a considerably high temperature (80 ° C. or higher) in the summer, and the temperature in the winter is also below zero. However, in the case of the present proposal, since it is made of glass fiber yarn that has excellent heat resistance and weather resistance, it can be attached to the window surface of an automobile without the above problems. It can be worn and used and has excellent durability.

Moreover, by applying resin coating to a net woven and woven with glass fiber yarns having such characteristics, not only the net surface is made smooth, but also the glass fiber yarns are prevented from bending and breaking, and light is shielded. It can give the net a suitable texture.

When the threads forming the net are made light non-transmissive, even if different colors are painted on both sides or a pattern is drawn, they do not interfere with each other in one direction and become independent.

Therefore, the outer surface of the light-shielding net is painted with a high reflectance, and the inner surface is darkly painted so that the outer surface has a higher reflectance than the inner surface. For example, the effect of increasing the temperature inside the room and the prevention of internal see-through will be enhanced, and the view from the inside will be much cleaner. Also, by printing different designs on the outside and inside surfaces according to the atmosphere, it can be used as a stick-on screen with high interior quality.

[0024]

【Example】

 An embodiment of the light shielding net 10 of the present invention will be described below with reference to FIGS.

The base cloth 13 of the net 12 is composed of glass fiber threads 16 made by bundling 400 long glass fibers each having a thickness of 6 μm and twisted into two fibers. It is woven to form a fine mesh. The thickness of the long glass fiber is not particularly limited, but a thickness of 3 μm to 9 μm is preferable because it has an appropriate toughness, and the pitch of the glass fiber yarn 16 is appropriately determined depending on the purpose of use of the light shielding net 10. It can be changed.

On the surface of the woven mesh base cloth 13, for example, vinyl chloride resin 18 is contained in a ratio of about 35% by weight with respect to the base cloth 13 so that the mesh is left open as shown in the figure. To coat. By doing so, the net 12 is given suppleness and texture, and the looseness or variation of the glass fiber thread 16 due to the focusing of the long glass fibers causes the thread 16 to shift in the warp or weft direction and deform the net 12. Is prevented.

After the resin 18 is coated, the net 12 is pressed by a roll (not shown) to deform the warp threads and their intersecting portions so that the threads themselves are flattened. In Fig. 2, the wavy shape shown in Fig. 2 is changed to a flat shape having no protrusions, that is, the height difference between the crossing portion of the yarn and the adjacent concave portion is leveled to form a mesh surface. The shape is changed to a substantially smooth shape. In particular, the flatness of the yarn and the smoothness of the mesh surface can be maintained well due to the settability of the resin coating layer on the yarn surface. In addition, since the yarn is a bundle of long fibers, the yarn itself tends to be flattened as shown in the figure, and the entire net has no unevenness compared to a net made by normal weaving and forms a sheet shape with a small overall thickness. Becomes

As a result, when the unpressed net 12 is adhered to the adherend surface of the glass G, as shown in FIG. 2, only the intersection 17 of the warp 16a and the weft 16b of the glass fiber yarn 16 is in contact with the surface. As described above, when the net 12 is obtained by flattening the yarns, the flattened and smoothed warp yarns 16a and the weft yarns 16b each have a required width and come in contact with the adherend. And the contact area increases.

In this embodiment, since the net 12 is formed by weaving the glass fiber yarns 16, when the net 12 is attached to a curved surface to be adhered, as shown in FIG. Since the crossing angle α of the weft thread 16b changes and the glass fiber thread 16 forming the mesh 12 becomes flexible, the shape of each mesh changes three-dimensionally and the mesh 12 can follow a curved surface.

As shown in FIG. 3, a hydrophilic pressure-sensitive adhesive 20 is applied to one side 14 of the net 12 which is resin-coated and pressed to flatten the yarn, and used. The hydrophilic pressure-sensitive adhesive can be easily washed with water to remove the pressure-sensitive adhesive remaining on the adhered surface when it is peeled off from the adhered surface such as a window glass. On the other hand, if the adhesive is adhered to the surface of the adhesive due to repeated attachments and detachments and the adhesive strength is reduced, the adhesive can be removed by lightly washing the adhesive surface with water to the extent that the adhesive does not disappear, and the decreased adhesive strength. Can be revived. A variety of adhesives can be used as the adhesive 20, but the adhesive based on an acrylic copolymer emulsion with a slight addition of a vinyl acetate emulsion can be removed with water and the adhesive stability In addition, the workability of attaching / detaching, heat resistance, weather resistance, etc. has been good. The pressure-sensitive adhesive 20 can be applied by a method such as roller coating or spray coating.In any case, since the mesh surface is smoothed as described above, it can be easily applied and the adhesive portion can be spread over a wide range. Can be reached.

In the above embodiment, a desired paint color or pattern can be drawn on one or both sides of the resin 18 of the coated net 12 by various printing methods such as silk screen printing. Even if the pattern is clearly drawn on the net 12 in this way, natural light can enter through the net and the outside can be seen through the net. When painting the inner and outer surfaces of the net 12, by setting the outer surface side to a silver color and the inner surface to a black color, the reflectance of the sun's rays increases and the temperature rise inside the room can be prevented, and the dazzling effect of the color This makes it difficult to see the inside, and a clearer view can be obtained from the inside.

In the above embodiment, the glass fiber threads 16 are woven to form the base cloth 13, and then the base cloth 13 is coated with the resin 18. However, instead of this, as shown in FIG. Alternatively, the glass fiber yarn 16 may be coated with the resin 18, and then the glass fiber yarn 16 may be knitted or woven to form the net 12, and the yarn may be pressed to flatten the yarn and smooth the net surface.

Further, in the above-mentioned embodiment of the present invention, a glass fiber yarn in which a large number of long fibers are bundled is used, and the net woven by the glass fiber yarn 16 is coated with a resin. It is conceivable to use a bundle of long filaments of the material or, as shown in FIG. 6, use synthetic resin monofilaments 24, 24 made of flat polyester resin or the like. In the case of a monofilament yarn, it is not always necessary to coat the resin 18, but after forming the net 12 by weaving it, the net 12 is pressed by a roll or the like, or the monofilament 24 is thermocompressed to form the monofilament 24 in the warp or weft direction. The mesh 12 is prevented from being deformed due to the shift.

[0034]

[Effect of the invention]

 According to the light-shielding net for an automobile of the present invention, since the glass fiber yarns and the intersecting portions that form the net are flattened, the net surface is smooth as a whole, and even if it is a woven net, A light-shielding net having a small thickness can be obtained as a whole. Therefore, it is easy to apply the adhesive to the mesh surface, and the adhesive part by the adhesive can be spread over the entire flattened area, and the contact ratio to the adherend is larger than that with simple mesh. . Therefore, the obtained shading net, together with the reinforcing effect of the resin coating, can maintain a stable adhered state without losing the properties of the net, and can be easily detached and reused if necessary. Become.

In particular, since the glass fiber thread, which is the material of the net, has excellent heat resistance and weather resistance, it may be deteriorated or damaged even when it is applied to the window surface of an automobile where the temperature is severe And has excellent durability.

In addition, even if the window surface is not only a flat surface but also a curved surface, it is possible to obtain a light shielding net that can be attached to the inside of the window with a simple operation and in a short time. In addition to reducing incident light to the inside and preventing see-through, a clear view from inside to outside can be obtained.

Further, if the outer surface of the net is made to have a color having a higher reflectance than the inner surface, the effect of preventing the temperature rise in the room and internal see-through is enhanced, and the view from the inside is much cleaner. become.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a light shielding net according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state before pressing the net in the light-shielding net of the previous figure.

FIG. 3 is a cross-sectional view showing a state after pressing the net in the light-shielding net of FIG.

FIG. 4 is a schematic diagram showing a state in which the shading net of FIG. 1 is attached to a curved surface to be adhered.

FIG. 5 is a cross-sectional view showing another example of a light shielding net.

FIG. 6 is a cross-sectional view showing an example in which a light shielding net is woven with monofilament yarn.

[Explanation of symbols]

 10 ... Shading net 12 ... Net 14 ... One side 16 ... Glass fiber thread 18 ... Resin 20 ... Adhesive

Claims (1)

[Utility model registration claims] 1. A light-shielding net which is used by sticking to a window surface of an automobile or the like, which is woven by a glass fiber yarn in which a large number of long glass fibers are bundled to form a net having a relatively fine mesh. A resin coating is applied so as to leave a mesh, and the mesh and its intersections are flattened by pressing this mesh from the front and back, and the mesh surface that is the sticking surface is made substantially smooth. Shading net.