JP4293335B2 - Standing sign - Google Patents

Description

【０１０６】
【発明の効果】
本発明の立看板の構成は上述の通りであるから、軽量で機械的強度が大きく、長期間変形することなく展示することができ、展示後は簡単に分解、破棄でき、且つ、有毒ガスを発生することなく焼却することができる。
【０１０７】
又、容易に組み立てられ、横ポールが回転しないので、高さ方向の機械的強度は大きく長期間変形することなく展示することができる。
【図面の簡単な説明】
【図１】本発明の立看板の１例を示す正面図である。
【図２】本発明の立看板の要部を示す模式断面図である。
【図３】固定部材３の一例を示す平面図である。
【図４】固定部材３の一例を示す側面図である。
【符号の説明】
１ 縦ポール
２ 横ポール
３ 固定部材
３１ 長軸部
３２ つまみ部
３３ 突起
３４ つまみ部３２の長軸部３１側の面
４ 表示シート
５ 筒状部
６ キャップ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a standing signboard.
[0002]
[Prior art]
Conventionally, a large number of standing signboards used for advertising and promotion against a storefront or telephone pole have been used because they are simple and inexpensive. This standing signboard is configured, for example, to fix a display sheet to a frame made up of a pair of left and right vertical poles and a pair of upper and lower horizontal poles (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 7-319393 A
[0004]
Since this standing signboard is used for advertising and promotion against a storefront or a utility pole, it usually has a long shape. From the standpoint of strength and appearance, the frame is composed of a thick vertical pole and a thin horizontal pole. Has been.
[0005]
However, if the display sheet is made of synthetic resin, the display sheet is pulled slightly to fix it to the horizontal pole so that the display sheet looks good with a pin, so the thin horizontal pole bends over time. There was a drawback that it deformed and looked bad.
[0006]
In addition, steel pipes were used as the vertical poles and horizontal poles, but since the steel pipes are heavy and rusted, recently paper pipes, vinyl chloride resin pipes, ABS resin pipes, filler-containing polypropylene pipes, etc. are used. Has been used.
[0007]
However, the paper tube has a low strength, and in particular, when it rains, the strength is reduced and the paper tube is damaged. In addition, since the vinyl chloride resin tube and the ABS resin tube contain chlorine or cyan group, they have the disadvantage of generating toxic gas when incinerated after use, and materials made of these tubes were used. The standing signboard also has the drawback of being bulky when discarded after use.
[0008]
[Problems to be solved by the invention]
The present invention has been made in view of the above disadvantages, and is lightweight, excellent in mechanical strength, can be displayed without being deformed for a long period of time, can be easily disassembled and discarded after the display, and generates toxic gas. It is to provide a standing signboard that can be incinerated without doing.
[0009]
[Means for Solving the Problems]
  The standing signboard according to claim 1 is a standing signboard in which a display sheet is fixed to a frame body including a pair of left and right vertical poles and a pair of upper and lower horizontal poles,The vertical pole has a bending stiffness of 5 N · m ² It is above, and the through hole is formed,AboveThe cross section of the horizontal poleOval cylindrical bodyAndThe long shaft portion includes a rod-like long shaft portion and a knob portion, and the long shaft portion is formed with tapered protrusions that are gradually lowered from the knob portion side toward the other end portion, and the long shaft portion of the knob portion. The fixing member whose side surface is substantially the same shape as the outer peripheral surface of the vertical pole isThe major axis of the ellipse and the length direction of the vertical pole are almost the same.In addition, the projection is pushed from the through hole to the horizontal pole, and the long pole portion side surface of the knob portion is inserted along the outer peripheral surface of the vertical pole so that the horizontal pole is inserted. So that it does not rotateWith vertical poleAboveThe horizontal pole is fixed.
[0010]
Next, the standing signboard of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an example of a standing signboard according to the present invention, and FIG. 2 is a schematic cross-sectional view showing a main part.
[0011]
In the figure, 1 and 1 are cylindrical vertical poles, 2 and 2 are cylindrical horizontal poles having an elliptical cross section, and the vertical poles 1 and 1 and the horizontal poles 2 and 2 are elliptical of the horizontal pole 2. The frame is formed by being fixed by the fixing members 3, 3,... So that the major axis of the shape and the length direction of the vertical pole 1 substantially coincide.
[0012]
FIG. 3 is a plan view showing an example of the fixing member 3, and FIG. 4 is a side view. The fixing member 3 is integrally formed with a rod-shaped long shaft portion 31 and a knob portion 32, and the long shaft portion 31 has tapered protrusions 33, 33 that gradually become lower from the knob portion 32 side toward the other end portion. Are formed on the left and right sides, and the surface 34 on the long shaft portion 31 side of the knob portion 32 is formed along the outer peripheral surface of the vertical pole 1.
[0013]
The horizontal pole 2 is brought into contact with the through hole 11 formed in the vertical pole 1, and the protrusion 33 formed on the long shaft portion 31 is pressed against the inner wall of the horizontal pole 2 from the opposite side of the through hole 11 and is pinched. By inserting until the surface 34 of the portion 32 extends along the outer peripheral surface of the vertical pole 1, the horizontal pole 2 and the vertical pole 1 are firmly fixed so that the horizontal pole 2 does not rotate.
[0014]
4 is a display sheet, and each peripheral part is folded to form cylindrical parts 5, 5,..., And vertical poles 1, 1 and horizontal poles 2, 2 are inserted into the cylindrical parts 5, 5,. Has been. Reference numeral 6 denotes a cap that is fitted to the upper end of the vertical pole 1.
[0015]
Since the vertical pole 1 is longer than the horizontal pole 2, it is easily deformed if its mechanical strength is low, and it is bent during exhibition and transportation, so its bending rigidity is 5 N · m.²Or more, preferably 7 N · m²That's it.
[0016]
The flexural rigidity is expressed by the product of the flexural modulus (E) and the moment of inertia (I). When the vertical pole is cylindrical, the outer diameter of the cylinder is d.₁, The inner diameter is d₀Then,
I = π (d₁ ^Four-D₀ ^Four) / 64
It is represented by
[0017]
The elliptical shape that is the cross-sectional shape of the horizontal pole 2 is the same as a circular shape when the difference between the major axis and the minor axis is small, and the mechanical strength is not improved. If it is too large, it becomes flat and difficult to handle. The ratio of the minor axis is preferably 1.2 to 3.0: 1.
[0018]
The above-mentioned display sheet is a sheet on which advertisements / advertisements are posted, and paper, plastic sheets, metal sheets, etc. can be used, has excellent weather resistance, can be incinerated, and toxic gas is generated during incineration An olefin-based resin sheet such as polyethylene or polypropylene is preferable, and the thickness is usually 10 to 100 μm, preferably 20 to 80 μm.
[0022]
The vertical pole 1 is preferably lightweight, strong in mechanical strength and easy to be discarded. Therefore, the vertical pole 1 has a stretched olefin resin sheet having a stretch ratio of 20 to 40 times, a melting point lower than the melting point of the olefin resin, A tubular body in which a non-stretched thermoplastic resin sheet that can be bonded to an olefin resin is heat-sealed in plural layers so that the stretch direction and the length direction are substantially the same is preferable.
[0023]
As the olefin-based resin constituting the stretched olefin-based resin sheet, any olefin-based resin having a film forming ability can be used. For example, a high-density polyethylene resin, a medium-density polyethylene resin, a low-density polyethylene resin, a linear low-density Polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-pentene-1 copolymer, ethylene-vinyl acetate copolymer, ethylene- (meth) acrylate copolymer, ethylene-vinyl chloride copolymer, Examples thereof include an ethylene-propylene-butene copolymer, and a high-density polyethylene resin is preferably used.
[0024]
The stretched olefin-based resin sheet needs to be stretched to a high degree of 20 to 40 times, and preferably has high mechanical strength such as tensile strength and elastic modulus, but the high-density polyethylene resin stretches when the density decreases. However, since the mechanical strength is not improved, 0.94 g / cm^ThreeWhat has the above density is preferable.
[0025]
Also, the weight average molecular weight of the high-density polyethylene resin is preferably 200,000 to 500,000 because the mechanical strength does not improve much even if stretched if it becomes too small, and film forming and stretching becomes difficult if it becomes too large. The melt index (MI) is preferably 0.1 to 20 and more preferably 0.2 to 10 because the film formability is excellent.
[0026]
The stretched olefin resin sheet is highly stretched 20 to 40 times. When the draw ratio is small, the mechanical strength is not improved, and when it is large, it is easy to tear, so it is 20 to 40 times, preferably 22 to 35 times.
[0027]
Conventionally known arbitrary methods may be adopted as the method for stretching the olefin resin sheet, but since it is highly stretched by 20 to 40 times, the olefin resin sheet is rolled and then repeatedly stretched or stretched a plurality of times. A method of multi-stage stretching is preferred.
[0028]
The rolling is a method in which an olefin-based resin sheet is supplied to a pair of rolls rotating in opposite directions and pressed to reduce the thickness of the sheet and extend, and the rolled sheet differs from the stretched sheet in that it is an olefin-based sheet. Since the resin is dense without being oriented, it is highly stretchable.
[0029]
The rolling temperature cannot be uniformly rolled when the temperature is low, and melt-cut when it is high. Therefore, the roll temperature during rolling is preferably in the range of "melting point-40 ° C" to the melting point of the olefin resin of the olefin resin sheet to be rolled. More preferably, it is “melting point−30 ° C.” to “melting point−5 ° C.” of the olefin resin.
[0030]
In the present invention, the melting point refers to the maximum point of the endothermic peak that accompanies melting of the crystal, which is recognized when thermal analysis is performed with a differential scanning calorimeter (DSC).
[0031]
If the rolling ratio is small, the subsequent stretching is burdened, and increasing the rolling ratio makes rolling difficult, so 4 to 10 times is preferable. In the present invention, the rolling ratio and the stretching ratio are values obtained by grading the cross-sectional area of the sheet before rolling or stretching by the cross-sectional area of the sheet after rolling or stretching.
[0032]
The stretching may be any conventionally known method, and examples thereof include a method of stretching while heating with a heater or hot air by a roll stretching method or a zone stretching method.
[0033]
The stretching temperature cannot be uniformly stretched when the temperature is lowered, and the sheet melts and cuts when the temperature is increased. Therefore, the range of “melting point−60 ° C.” to the melting point of the olefin resin of the stretched olefin resin sheet is preferable, and more preferably, the olefin It is “melting point−50 ° C.” to “melting point−5 ° C.” of the base resin.
[0034]
In addition, the stretching ratio after rolling is 20 to 40 times as a whole, so the rolling ratio may be determined in consideration of the rolling ratio so that the entire stretching ratio is within this range. If the amount is small, the mechanical strength is not improved, so it is preferably 2 times or more, more preferably 3 times or more. In addition, the whole draw ratio is a numerical value obtained by multiplying the draw ratio after rolling and the draw ratio after rolling.
[0035]
The stretched olefin-based resin sheet is a sheet that functions as a structural material in a cylindrical body. When the thickness is reduced, the mechanical strength is reduced. When the thickness is increased, the stretched olefin-based resin sheet is easily cracked in the stretched direction. It is 05-0.4 mm, Preferably it is 0.1-0.2 mm.
[0036]
The thermoplastic resin constituting the unstretched thermoplastic resin sheet is a resin having a melting point lower than the melting point of the olefin resin constituting the stretched olefin resin sheet and capable of adhering to the olefin resin.
[0037]
Since the thermoplastic resin is a resin having a function of heat-sealing stretched olefin resin sheets or a stretched olefin resin sheet and an unstretched thermoplastic resin sheet, the above-mentioned olefin resin is preferably used.
[0038]
In addition, since the tubular body is preferably heat-sealed without substantially shrinking the stretched olefin resin sheet, the thermoplastic resin has a melting point of the olefin resin constituting the stretched olefin resin sheet. A resin having a melting point lower by 5 to 50 ° C. is preferred.
[0039]
Therefore, when the olefin resin is a high density polyethylene resin, the thermoplastic resin is preferably a linear low density polyethylene resin or a low density polyethylene resin.
[0040]
The unstretched thermoplastic resin sheet functions as an adhesive layer for the stretched olefin-based resin sheet, and its mechanical strength is low. Therefore, when the thickness is increased, the mechanical strength is decreased, so the thickness is generally 0.01 to 0.1 mm. The thickness is preferably 0.02 to 0.05 mm.
[0041]
The cylindrical body is laminated and heat-sealed with a plurality of layers so that the stretched olefin resin sheet and the unstretched thermoplastic resin sheet that can adhere to the olefin resin are substantially the same in the stretch direction and the length direction. ing.
[0042]
The shape of the cylindrical body may be appropriately determined depending on the use such as a cylindrical shape or a prismatic shape, and the thickness is also the same.
[0043]
The cylindrical body may be produced by any conventionally known method, but has a melting point lower than the melting point of the olefin resin on at least one surface of the stretched olefin resin sheet having a stretch ratio of 20 to 40 times, A laminated sheet formed by laminating an unstretched thermoplastic resin sheet that can be bonded to the olefin resin is wound around a core material so that the stretch direction and the length direction are substantially the same, and then heated and pressurized. The cylindrical body obtained by heat-sealing and then pulling out the core material is preferable.
[0044]
The laminated sheet is formed by laminating an unstretched thermoplastic resin sheet on at least one surface of the stretched olefin-based resin sheet. Since the laminated sheet is wound and heat-sealed a plurality of times, It is preferable that unstretched thermoplastic resin sheets are laminated on both sides of the stretched olefin resin sheet so as to be firmly fused.
[0045]
Although any method may be adopted as the method for producing the laminated sheet, an unstretched thermoplastic resin sheet is thermally fused to the stretched olefin resin sheet at a temperature at which the stretched olefin resin sheet does not substantially heat shrink. It is preferable.
[0046]
The core material may be a rod-like body, a cylindrical body, etc. having substantially the same shape as the inner shape of the cylindrical body to be obtained, and any material such as metal, plastic, inorganic material is used. Although it is possible, it is more preferable to heat the cylindrical body from the inside more quickly and more strongly, so that a metal core with a heating device is preferable.
[0047]
In the manufacturing method described above, the laminated sheet is wound by heating and pressurizing after being wound around the core material so that the stretching direction of the stretched olefin resin sheet and the length direction of the cylindrical body are substantially the same. To wear.
[0048]
This heat-sealing is preferably heat-sealed at a temperature at which the stretched olefin resin sheet does not substantially heat shrink.
[0049]
That is, the heat fusion temperature is a temperature equal to or lower than the melting point of the olefin resin constituting the stretched olefin resin sheet, and the “melting point−10 ° C.” of the thermoplastic resin constituting the unstretched thermoplastic resin sheet. “Melting point + 10 ° C.” is preferable.
[0050]
The number of times the laminated sheet is wound depends on the thickness of the laminated sheet, but if it is increased, it becomes difficult to heat-seal the expanded olefin resin sheet without substantially shrinking the heat, so about 2 to 6 times are required. preferable.
[0051]
Although any method may be adopted as the heating and pressurizing method, a method in which the inner shape is substantially the same as the outer shape of the cylindrical body to be obtained and heating and pressurizing with a split with heating means is preferable.
[0052]
After heat sealing, a cylindrical body is obtained by pulling out the core material.
[0053]
The cylindrical body includes a stretched olefin resin sheet having a stretch ratio of 20 to 40 times, an unstretched thermoplastic resin sheet having a melting point lower than the melting point of the olefin resin, and capable of adhering to the olefin resin. Alternately, the stretched olefin-based resin sheet is wound around the core material a plurality of times so that the stretch direction and the length direction are substantially the same, and then thermally fused by heating and pressurization, and then the core A cylindrical body obtained by pulling out the material is preferred.
[0054]
That is, whether the stretched olefin resin sheet and the unstretched thermoplastic resin sheet are overlapped and wound around the core material a plurality of times so that the stretch direction of the stretched olefin resin sheet is substantially the same as the length direction of the cylindrical body A plurality of stretched olefin resin sheets and unstretched thermoplastic resin sheets are alternately stacked, and once on the core so that the stretch direction of the stretched olefin resin sheet is substantially the same as the length direction of the cylindrical body Alternatively, heat fusion is performed after winding a plurality of times.
[0055]
Further, the cylindrical body is formed by alternately superposing stretched olefin resin sheets having a stretch ratio of 20 to 40 times and thermoplastic resin sheets having a melting point lower than that of the olefin resin and capable of adhering to the olefin resin. The polymer sheet is drawn and molded at a temperature lower than the melting point of the olefin-based resin and from “melting point−10 ° C.” to “melting point + 20 ° C.” of the thermoplastic resin so that the stretching direction and the length direction are substantially the same. The cylindrical body obtained by is preferable.
[0056]
The polymer sheet may be obtained by alternately superimposing the stretched olefin resin sheet and the thermoplastic resin sheet, or may be bonded.
[0057]
The pultrusion molding is performed by making the polymer sheet into a cylindrical shape and drawing it while being heated and pressurized with a mold, and then thermally fusing the stretched olefin resin sheet with a thermoplastic resin sheet.
[0058]
In order to make the polymerization sheet into a cylindrical shape, the ends of the polymerization sheet may be brought into contact with each other, or may be formed by winding the polymerization sheet a plurality of times.
[0059]
When a cylindrical body is formed by abutting the ends of the polymerization sheet, a plurality of stretched olefin resin sheets and thermoplastic resin sheets are alternately stacked so as to correspond to the thickness of the cylindrical body to be obtained. A combined polymerization sheet may be used.
[0060]
Moreover, when forming a cylindrical body by winding the polymerization sheet a plurality of times, a polymerization sheet in which a thermoplastic resin sheet is superimposed on both sides of the stretched olefin resin sheet is wound a plurality of times to form a cylindrical shape with a desired thickness. It is preferable to form a body.
[0061]
The temperature of the pultrusion molding is a temperature not higher than the melting point of the olefin resin constituting the stretched olefin resin sheet, and the melting point of the thermoplastic resin constituting the unstretched thermoplastic resin sheet is “melting point−10 ° C.” to “melting point”. + 20 ° C ".
[0062]
Further, the pressure condition of the pultrusion molding is preferably 0.05 to 3 MPa because it is difficult to heat-bond uniformly when it is low, and the polymerization sheet is torn or broken when it is too high.
[0063]
When the pulling force becomes strong, the polymer sheet will be torn or broken, so 0.1 to 20 MPa is preferable with respect to the cross-sectional area of the polymer sheet.
The cylindrical body pulled out while being heated and pressurized is cooled and fixed in a state where a drawing force is applied.
[0064]
It is preferable that the cylindrical body is further laminated with a protective layer made of a thermoplastic resin and a weather resistance imparting agent or a colorant as an outermost layer because weather resistance is excellent and appearance is improved.
[0065]
Since the thermoplastic resin is preferably firmly bonded to the stretched olefin resin sheet or the unstretched thermoplastic resin sheet, the above-mentioned olefin resins can be suitably used.
[0066]
As the weather resistance imparting agent, any weather resistance imparting agent generally used as a weather resistance imparting agent for thermoplastic resins can be used, and examples thereof include an ultraviolet absorber, a light stabilizer, and an antioxidant.
[0067]
Examples of the ultraviolet absorber include 2- (2H-benzotriazol-2-yl) -p-cresol and 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol. Benzotriazole-based UV absorbers such as 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol and the like; octabenzone Benzophenone ultraviolet absorbers, salicylic acid ester ultraviolet absorbers, cyanoacrylate ultraviolet absorbers, and the like.
[0068]
Examples of the light stabilizer include bis (2,2,6,6-tetramethyl-4-piperidine) sebacate and dimethyl-1- (2-hydroxyethyl) -4-hydroxy-2,2,6 succinate. , 6-tetramethylpiperidine polycondensate, poly [{6- (1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl} {(2,2 , 6,6-tetramethyl-4-piperidine) imino} hexamethylene {(2,2,6,6-tetramethyl-4-piperidine) imino}] and the like.
[0069]
As said antioxidant, a phenolic antioxidant, sulfur type antioxidant, a phosphite type antioxidant, etc. are mentioned, for example.
[0070]
The addition amount of the weather resistance-imparting agent does not exhibit a weather resistance effect when it is small, and only increases the cost, and the weather resistance effect is not improved. Therefore, 0.01% with respect to 100 parts by weight of the thermoplastic resin. -10 parts by weight is preferred.
[0071]
As the colorant, any colorant generally used as a colorant for thermoplastic resins can be used. For example, organic pigments such as azo-type, phthalocyanine-type, dye lake-type, etc .; oxide-type, hydroxide-type , Sulfide-based, phosphate-based and carbonate-based inorganic pigments.
[0072]
The addition amount of the colorant may be appropriately determined as necessary, but is generally preferably 0.01 to 10 parts by weight with respect to 100 parts by weight of the thermoplastic resin.
[0073]
In the protective layer, inorganic fillers such as calcium carbonate, magnesium carbonate, hydrous silicic acid, anhydrous silicic acid, calcium silicate, silica, clay, talc, carbon black, glass balloon and the like may be added as necessary. Good.
[0074]
The thickness of the protective layer may be appropriately determined according to need. However, it becomes difficult to impart weatherability and coloring when it becomes thin, and it becomes heavier when it becomes thick, so it is generally 0.01 to 0.1 mm, preferably 0. 0.02 to 0.05 mm.
[0075]
As a method for laminating the protective layer, any known method may be adopted. However, it is preferable that the protective layer is firmly and beautifully bonded to the cylindrical body. It is preferable to laminate as an outer layer and heat-seal.
[0076]
The cylinder is 5 N · m so that it does not break during transportation or strong winds.²Since it is necessary to have the above bending rigidity and it is preferable that it is lightweight, the thickness is preferably 0.5 to 2.0 mm and the thickness is preferably 12 to 25 mm.
[0077]
The horizontal pole 2 is preferably made of a thermoplastic resin, in particular, the olefin resin that does not generate toxic gas during incineration, and is preferably a cylindrical body.
[0078]
The horizontal pole can hold the display film for a long time without deformation, and preferably has a flexural modulus of 1 GPa or more and is lightweight so that it does not break during transportation or strong winds. The wall thickness is preferably 0.2 to 2.0 mm and the thickness (major axis) is 10 to 25 mm.
[0079]
Needless to say, the protective layer may be laminated on the surface of the horizontal pole, or the weatherability-imparting agent, colorant, etc. may be added to the thermoplastic resin.
[0080]
The manufacturing method of the horizontal pole is not particularly limited, but is preferably molded by an extrusion method because the cross-sectional shape is elliptical.
[0081]
When the vertical pole 1 is the cylindrical body and the horizontal pole 2 is a thermoplastic resin cylindrical body, the ratio of the wall thickness of the vertical pole 1 and the horizontal pole 2 (vertical pole 1 / horizontal). Preferably, the pole 2) is 1.0 to 3.0, and the flexural modulus ratio is 1.5 or more.
[0082]
The shape of the standing signboard is usually a vertically long shape, and the ratio of the vertical length and the horizontal length of the display sheet is generally about 2 to 5. The display sheet is fixed in a state where a tension is applied, and a bending load is applied to the vertical pole and the horizontal pole due to the tension. The slack of the display sheet can be eliminated within the range where the stress generated by the bending load can be tolerated by the vertical pole and the horizontal pole.
[0083]
Therefore, the bending stiffness of the vertical pole is 2 times the bending stiffness of the horizontal pole.^Three~ 5^ThreeSince it is preferably double, the bending elastic modulus and wall thickness of the vertical pole and the horizontal pole are preferably in the above ranges.
[0084]
DETAILED DESCRIPTION OF THE INVENTION
Next, examples of the present invention will be described.
[0085]
Example 1
Vertical pole manufacturing
Weight average molecular weight (Mw) 3.3 × 10^FiveA high-density polyethylene resin (manufactured by Nippon Polychem Co., Ltd.) having a melting point of 135 ° C. is supplied to the same-direction twin-screw kneading extruder (manufactured by Plastic Engineering Laboratory) and melt-kneaded at a resin temperature of 200 ° C. The sheet was molded into a width of 340 mm and a thickness of 2.7 mm using a calendar molding machine controlled at a temperature of 110 ° C. to obtain a polyethylene resin sheet.
[0086]
The obtained polyethylene resin sheet was rolled at a rolling ratio of 9.4 times using a rolling molding machine (manufactured by Sekisui Koki Co., Ltd.) heated to 120 ° C. to obtain a rolled sheet having a width of 340 mm and a thickness of 290 μm.
[0087]
The obtained rolled sheet is subjected to multi-stage stretching 3.0 times with a hot-air heating type multi-stage stretching apparatus (manufactured by Kyowa Engineering Co., Ltd.) heated to 110 ° C., a total draw ratio of 28.2 times, width 203 mm, thickness 160 μm. A stretched polyethylene resin sheet was obtained.
[0088]
160 linear low density polyethylene resin sheet (manufactured by Sekisui Film Co., Ltd.) having a melting point of 120 ° C., a width of 190 mm, and a thickness of 30 μm is applied to one side of a stretched polyethylene resin sheet obtained using a film fusion apparatus (manufactured by Konan Design Industry). A laminated sheet having a thickness of 190 μm was obtained by heat-sealing (sheet temperature 125 ° C.) while being laminated with a heating roll at 0 ° C.
[0089]
A total of six laminated sheets each slitted to a width of 54 mm and a width of 57 mm are wound on a stainless steel core (outer diameter 15.8 mm, wall thickness 2.0 mm) so that the laminated sheet with a width of 54 mm is inside. Rotate through a heating mold with a length of 100 mm, an inner diameter of 18.0 mm, a temperature of 120 ° C., and a cooling mold with a length of 100 mm and an inner diameter of 18.0 mm cooled with water at about 20 ° C. By taking up at 1.0 m / min, a cylindrical vertical pole having an outer diameter of 18.0 mm, an inner diameter of 15.8 mm, and a length of 1800 mm was obtained.
[0090]
In addition, six preforms having a cone-shaped hole with a minimum diameter of 19 mm were installed in front of the heating mold so that the laminated sheet was supplied into the heating mold without any defects.
[0091]
At this time, the heating mold was installed in a hot-air heating furnace (length: 1.2 m) controlled at a temperature of 120 ° C., and the temperature of the laminated sheet immediately before entering the heating mold was 113 ° C.
[0092]
Moreover, when the lamination pressure in the heating mold and the take-up force of the take-up machine were measured, they were 0.32 MPa and 226 N (take-off stress 3.9 MPa), respectively.
[0093]
Horizontal pole manufacturing
100 parts by weight of a high-density polyethylene resin (manufactured by Nippon Polychem Co., Ltd.) having a melting point of 135 ° C. and 30 parts by weight of talc were supplied to the same direction twin-screw kneading extruder (manufactured by Plastic Engineering Laboratory) and melt kneaded at a resin temperature of 200 ° C. Then, a cylindrical body having a major axis of 15 mm, a minor axis of 10 mm, and a wall thickness of 1.0 mm is obtained by extruding into an elliptical shape using a mold at a linear speed of 1.0 m / min, cooling in a cooling water tank and taking out. A horizontal pole was obtained by cutting to 350 mm.
[0094]
Manufacture of standing signs
A standing signboard as shown in FIG. 1 was manufactured.
Rectangular polyethylene resin film (melting point 135 ° C., density 0.96 g / cm^ThreeThe cylindrical portion 5 was formed by folding and heat-sealing each end portion of () to obtain a display sheet 4 having a length of 1370 mm and a width of 350 mm.
[0095]
The vertical pole 1 provided with a through hole 11 at a position 30 mm from the upper end and 300 mm from the lower end was inserted into the left and right cylindrical parts 5 and the horizontal pole 2 was inserted into the upper and lower cylindrical parts 5.
[0096]
Next, the horizontal pole 2 is applied to the through hole 11 of the vertical pole 1 so that the long diameter of the horizontal pole 2 coincides with the length direction of the vertical pole 1, and the fixing member 3 shown in FIGS. It was inserted and fixed to the vertical pole 1 so that the horizontal pole 2 did not rotate, and the standing sign of the present invention was obtained.
[0097]
(Comparative Example 1)
Horizontal pole manufacturing
100 parts by weight of a high-density polyethylene resin (manufactured by Nippon Polychem Co., Ltd.) having a melting point of 135 ° C. and 30 parts by weight of talc were supplied to the same direction twin-screw kneading extruder (manufactured by Plastic Engineering Laboratory) and melt kneaded at a resin temperature of 200 ° C. Then, a cylindrical body having an outer diameter of 10 mm, an inner diameter of 8 mm, and a thickness of 1.0 mm is obtained by extruding into an elliptical shape using a mold at a linear speed of 1.0 m / min, cooling in a cooling water tank, and taking out. A horizontal pole was obtained by cutting to 350 mm.
[0098]
Manufacture of standing signs
A standing signboard was obtained in the same manner as in Example 1 except that the horizontal pole was used.
[0099]
The bending elastic modulus and bending rigidity of the obtained pole were measured, the amount of deflection of the standing signboard was measured, and the results are shown in Table 1.
[0100]
(Measurement of physical properties)
(1) Flexural modulus
The obtained vertical pole and horizontal pole cylindrical body was cut into a length of 400 mm to obtain a sample for measuring physical properties.
[0101]
Using the obtained sample, a bending test was performed at a temperature of 23 ° C., a span distance of 300 mm, a deformation speed of 10 mm / min, and an indenter radius of 75 mm, and a flexural modulus was measured.
[0102]
In addition, the transverse pole measured the bending elastic modulus of the major axis direction. At this time, the measurement was performed by using a flat plate having a variable angle as a fulcrum so that the fulcrum does not deform.
[0103]
(2) Flexural rigidity
The bending stiffness was calculated from the outer diameter and inner diameter of the obtained sample.
[0104]
(3) Deflection amount
The amount of deflection of the upper horizontal pole of the obtained signboard was measured immediately after manufacture (initial deflection amount). Moreover, after standing at 50 degreeC for one week in the state which stood the obtained standing signboard, the deflection amount of the same position was measured. The amount of deflection was measured as the distance from the straight line connecting both ends of the horizontal pole to the center of the horizontal pole in a stationary state.
[0105]
[Table 1]

[0106]
【The invention's effect】
Since the structure of the standing signboard of the present invention is as described above, it is lightweight, has high mechanical strength, can be displayed without being deformed for a long period of time, can be easily disassembled and discarded after display, and toxic gas can be removed. It can be incinerated without generating.
[0107]
  Moreover, since it is easily assembled and the horizontal pole does not rotate, the mechanical strength in the height direction is large and can be displayed without being deformed for a long period of time.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a standing signboard according to the present invention.
FIG. 2 is a schematic cross-sectional view showing the main part of the standing signboard of the present invention.
3 is a plan view showing an example of a fixing member 3. FIG.
4 is a side view showing an example of a fixing member 3. FIG.
[Explanation of symbols]
  1 Vertical pole
  2 Horizontal pole
  3 Fixing member
  31 Long shaft
  32 Knob
  33 Protrusions
  34 The surface of the knob portion 32 on the long shaft portion 31 side
  4 display sheets
  5 cylindrical part
  6 Cap

Claims (6)

A signboard in which a display sheet is fixed to a frame made up of a pair of left and right vertical poles and a pair of upper and lower horizontal poles, wherein the vertical pole has a bending rigidity of 5 N · m ² or more and has a through hole. and, the lateral pole cross-sectional shape is a tubular body of oval, made of a knob long axis of the rod-like, gradually decreases toward the other end from the knob portion side in the major axis portion Tapered protrusions are formed on the left and right, and the fixing member whose surface on the long axis side of the knob portion is substantially the same shape as the outer peripheral surface of the vertical pole is the elliptical long diameter and vertical pole of the horizontal pole. The protrusions are pressed against the inner wall of the horizontal pole from the through-hole to the horizontal pole so that the long axis side surface of the knob portion is along the outer peripheral surface of the vertical pole. Until the horizontal pole does not rotate. In odd, sign boards that the longitudinal pole and said transverse pole, characterized in that it is fixed. The longitudinal pole has a stretched olefin resin sheet having a stretch ratio of 20 to 40 times, and an unstretched thermoplastic resin sheet that has a melting point lower than the melting point of the olefin resin and can be bonded to the olefin resin. 2. The signboard according to claim 1 , wherein the signboard is a cylindrical body that is heat-sealed in a plurality of layers so that the length directions are substantially the same. An unstretched thermoplastic resin sheet in which the cylindrical body has a melting point lower than the melting point of the olefin resin on at least one surface of the stretched olefin resin sheet having a stretch ratio of 20 to 40 times and can be bonded to the olefin resin. After the laminated sheet is laminated with a plurality of layers around the core material so that the length direction and the length direction are substantially the same, heat fusion is performed by heating and pressing, and then the core material is pulled out. The standing signboard according to claim 2 , wherein the signboard is a cylindrical body obtained by the above method. The tubular body alternately has a stretched olefin resin sheet having a stretch ratio of 20 to 40 times and an unstretched thermoplastic resin sheet that has a melting point lower than the melting point of the olefin resin and can adhere to the olefin resin. And, after winding the stretched olefin-based resin sheet around the core material so that the stretch direction and the length direction are substantially the same, heat fusion is performed by heating and pressurizing, and then the core material is pulled out. The standing signboard according to claim 2 , wherein the signboard is an obtained cylindrical body. A polymer sheet in which a cylindrical body alternately overlaps a stretched olefin resin sheet having a stretch ratio of 20 to 40 times and a thermoplastic resin sheet having a melting point lower than the melting point of the olefin resin and capable of adhering to the olefin resin. Is drawn at a temperature lower than the melting point of the olefin resin and at a temperature of “melting point−10 ° C.” to “melting point + 20 ° C.” of the thermoplastic resin so that the stretching direction and the length direction are substantially the same. 2. The signboard according to claim 1 , wherein the signboard is a cylindrical body. The standing sign according to any one of claims 1 to 5, wherein the horizontal pole is a cylindrical body made of an olefin resin.

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