JP4886590B2 - Rubber balloon and method for manufacturing the same - Google Patents

Description

  The present invention relates to a rubber balloon and a method for manufacturing the same, and more particularly to a rubber balloon that enables patterning on a balloon body without using printing ink or colored rubber paste and a method for manufacturing the same.

  Rubber balloons include yo-yo balloons that inflate and inflate liquids, and balloons that inflate and inflate light specific gases such as helium gas. These are used for toys, commercial advertisements, indoors and outdoors. Widely used for decorative purposes. Some of these rubber balloons have a plain surface, but others have a wider range of uses by diversifying their appearance by applying patterns.

  Conventionally, as a method for patterning a rubber balloon, a method in which the rubber balloon is inflated and a colored rubber paste is manually applied to the surface is generally used. However, since this is low in productivity, Patent Document 1 proposes a patterning method in which productivity is remarkably improved by automating this with a machine.

  Patent Document 1 proposes an automatic patterning method in which a large number of balloon molds are intermittently attached to a transport chain that moves endlessly, and these balloon molds are sequentially immersed in a latex liquid while being transported by the transport chain. Spiral is formed by forming a rubber coating, then swinging the balloon mold with the rubber coating on the conveyor chain while rotating it around the axis, and dropping colored rubber glue onto the surface of the swinging rubber coating. A pattern is added. Furthermore, the patterned surface is dipped again in the latex liquid to cover the cover rubber, thereby preventing the colored rubber paste pattern from peeling off.

However, even if it is automated, there is no change in the need for a time-consuming patterning process for applying colored rubber paste, so the time for implementing the patterning process and the equipment costs for that process It still took a lot of time and money.
Japanese Patent No. 2811412

  An object of the present invention is to provide a rubber balloon capable of patterning without requiring a printing process or a patterning process of colored rubber paste, and a method for manufacturing the same.

The rubber balloon of the present invention that achieves the above object is a pattern in which the balloon body is made of a colored rubber composition, and when the balloon body is non-inflated, the balloon body has a protrusion protruding from the inner wall surface on the inner wall surface of the balloon body. And the thickness of the ground portion excluding the protrusion of the balloon body is substantially uniform in a range of 0.5 to 1.5 mm, and the protrusion remains non-transparent when the balloon body is inflated. The remaining rubber film is made transparent so that the pattern made of the protrusions is made visible on the surface of the balloon body.

  The height at which the protrusion protrudes from the inner wall surface of the balloon body is preferably in the range of 0.1 to 1.5 mm, although it depends on the size of the rubber balloon. By making the height of the protrusions in such a range, it is also possible to advantageously make the pattern manifest. For the colored rubber composition, a rubber composition in which at least a pigment, a vulcanizing agent, and a vulcanization accelerator are blended with a rubber component of natural rubber or synthetic rubber is preferably used.

The method for producing a rubber balloon of the present invention uses a balloon mold having a pattern of concave grooves on its surface, forms a rubber film of a latex liquid on the surface of the balloon mold, and after drying the rubber film, the balloon It has a pattern consisting of projections on the inner wall surface by releasing from the mold, producing a rubber balloon thickness of the land portion is substantially uniform in the range of 0.5~1.5mm excluding the projection balloon body It is characterized by doing.

  The depth of the balloon-shaped concave groove is preferably 0.1 to 1.5 mm corresponding to the height of the protrusion.

  The rubber balloon of the present invention has a pattern of protrusions on the inner wall surface when the balloon body made of a colored rubber composition is not inflated, and when the balloon body is inflated, the protrusions are not The remaining rubber film is made transparent while keeping it transparent, and the pattern of the protrusion is made visible on the surface of the balloon body, so that a rubber balloon with a pattern can be obtained without providing a printing process or a patterning process with colored rubber paste. Is possible.

  In addition, the method for producing a rubber balloon of the present invention uses a balloon mold having a groove pattern on the surface, forms a rubber film of a latex liquid, and after releasing the rubber film, the mold is released as described above. It is possible to easily obtain a rubber balloon that has a pattern of protrusions on the inner wall surface and becomes a pattern when it is inflated.

  The rubber balloon of the present invention has a structure in which a balloon body that performs inflation and a blowing portion that press-fits an inflation fluid into the balloon body are integrally formed. At the time of inflation, the inner wall surface is configured to have a pattern formed by a protrusion protruding from the inner wall surface.

  The colored rubber composition is composed mainly of natural rubber and / or synthetic rubber. As the synthetic rubber, for example, polyisoprene rubber, polybutadiene rubber, styrene-butadiene copolymer, and the like can be used. Further, at least a pigment, a vulcanizing agent, and a vulcanization accelerator are blended in the colored rubber composition, and a stabilizer, an antiaging agent, and the like can be blended if necessary.

  The pigment is a material that colors the rubber composition such as red, green, yellow, blue, and white. For example, titanium oxide, bengara, ultramarine blue, yellow lead and the like can be exemplified. The blending amount of the pigment blended with respect to the rubber component is preferably 0.1 to 4 parts by weight with respect to 100 parts by weight of the rubber component although it varies depending on the color. If the amount of the pigment is too small, it becomes difficult to keep the projections non-transparent at the time of inflation, and if too large, the transparency of the rubber film of the balloon body is inhibited at the time of inflation.

  When the rubber balloon formed as described above is not inflated, the entire rubber film is non-transparent, but when the fluid is pressed into the balloon body to inflate the rubber film, the rubber film becomes thin and the protrusion of the inner wall surface The remaining rubber film becomes transparent while keeping the pattern non-transparent. Due to the change in the rubber film, the pattern of the protrusion appears on the outer surface of the balloon body so as to be visible. Therefore, in the rubber balloon of the present invention, a pattern can be provided on the outer surface of the balloon body without specially providing a printing process or a colored rubber paste patterning process unlike a conventional rubber balloon.

  Here, the balloon body is inflated and the remaining rubber film except for the protrusions is transparent. This is based on the fact that the body diameter of the balloon body when it is not inflated is inflated 6 times. Judgment shall be made. The reason why the air balloon is inflated to 6 times that in the non-inflation is based on the fact that 6 times is the expansion standard when the rubber balloon is inflated. When the body diameter is inflated to 6 times that of non-inflation, if the rubber film is made to reveal the transparent and non-transparent parts, it is used in a state that is significantly different from the expansion factor. This is because the effects of the present invention can be almost obtained.

  In the present invention, the pattern of the protrusion formed on the inner wall surface of the balloon body is used in a broad sense including pictures, characters, symbols, etc., and the form is not particularly limited. As the pattern formed by the protrusions, for example, a plurality of rib-shaped protrusions such as a lattice pattern, a rhombus pattern, and a turtle shell pattern in which a plurality of rib-shaped protrusions cross each other are arranged in the circumferential direction or the longitudinal direction of the balloon body. Examples thereof include a lined stripe pattern, a spiral pattern in which rib-shaped protrusions are wound endlessly, a polka dot pattern in which the rib-shaped protrusions draw a large number of circles, and other random patterns.

  The height at which the protrusion protrudes from the inner wall surface of the balloon body is not particularly limited as long as the protrusion maintains a non-transparency during inflation. Although it depends on the size of the rubber balloon, it is preferably 0.1 to 1.5 mm, more preferably 0.1 to 1.0 mm, and particularly preferably 0.1 to 0.5 mm. If the height of the protrusion is less than 0.1 mm, it is difficult to keep the protrusion non-transparent during inflation. If it exceeds 1.5 mm, the releasability when the molded rubber balloon is removed from the balloon mold is lowered.

Further, the thickness of the ground portion excluding the protrusion of the balloon body is made substantially uniform in the range of 0.5 to 1.5 mm, although it depends on the size of the rubber balloon . Good Mashiku good that the range of 0.6～0.9Mm.

  Hereinafter, the embodiment will be specifically described with reference to the embodiments shown in the drawings.

  1 and 2 show a non-inflated state of a rubber balloon according to an embodiment of the present invention, FIG. 1 is a front view, and FIG. 2 is a cross-sectional view taken along line XX in FIG.

  As shown in FIGS. 1 and 2, the rubber balloon 1 is formed by integrally forming an oval spherical balloon body 2 and a tubular blowing portion 3. At the opening end of the blowing portion 3, a mouth ring 4 having a rolled up end is formed in a ring shape. Although the balloon body 2 is smooth on the outer surface side, a large number of rib-like protrusions 5 are provided on the inner wall surface so as to intersect the longitudinal direction and the circumferential direction, thereby forming a lattice-like uneven pattern. .

  Since the protrusions 5 are integrally formed on the inner wall surface of the balloon body 2 in this way, the ground portion 6 of the balloon body 2 has a thin rubber film, whereas the lattice pattern of the protrusions 5 becomes thick. ing. As described above, the height at which the protrusion 5 protrudes from the inner wall surface (ground portion) of the balloon body 2 is preferably in the range of 0.1 to 1.5 mm, more preferably, depending on the size of the rubber balloon. Is 0.1 to 1.0 mm, particularly preferably 0.1 to 0.5 mm.

  FIG. 3 shows a state in which the outer diameter (maximum outer diameter) of the rubber balloon 1 is inflated to six times that in the non-inflation state, and the blowing portion 3 is sealed with a clip 7.

  In the rubber balloon 1, since the entire rubber film is made thinner by the inflation than when it is not inflated, the ground portion 6 of the balloon body 2 changes to be transparent. However, although the protrusion 5 is thinned, it is thicker than the ground portion 6 and thus maintains a non-transparent state. Since the rib-like protrusions 5 remain in a non-transparent state with respect to the ground portion 6 that has become transparent in this way, the lattice pattern of the protrusions 5 is visibly visible on the outer surface of the balloon body 2 and becomes apparent. . In addition, since the ground portion 6 is transparent, it is possible to see through to the lattice pattern on the inner wall surface on the opposite side, and the lattice pattern on the front side and the lattice pattern on the opposite inner wall surface are contrasted to create a beautiful appearance. Can be presented.

  Hereafter, the manufacturing method of the rubber balloon of this invention mentioned above is demonstrated.

  As shown in FIG. 4, the rubber balloon of the present invention can be manufactured using a balloon mold having a groove pattern on the surface. The balloon mold is preferably made of a material excellent in releasability from rubber. For example, glass, ceramic, plastic, or the like can be used.

  The balloon mold illustrated in FIG. 4 is a balloon mold 11 for manufacturing the rubber balloon of FIGS. 1 and 2, and includes a mold body 12 and a shaft portion 13. A large number of concave grooves 15 are provided on the surface of the mold body 12 in the longitudinal direction (axial direction) and the circumferential direction to form a lattice pattern. The lattice-shaped concave grooves 15 correspond to the lattice pattern of the rib-like protrusions 5 formed on the inner wall surface of the rubber balloon 1 shown in FIGS. The depth of the concave groove 15 is preferably 0.1 to 1.5 mm, more preferably 0.1 to 1.0 mm, particularly preferably 0.1 to 0, corresponding to the size of the protrusion 5. .5mm is recommended.

  The balloon mold provided with the groove pattern as described above is immersed in a latex solution, a rubber film is formed on the surface of the balloon mold, and the rubber film is heated and dried to be vulcanized. When the rubber coating that has been vulcanized on the balloon mold is released from the balloon mold, a rubber balloon having a projection pattern corresponding to the groove on the inner wall surface can be obtained.

  FIG. 5 shows an example of a process for producing the rubber balloon of the present invention.

  21 is a transfer chain which circulates the manufacturing process endlessly. A large number of balloon molds 11 are attached at regular intervals along the transport chain 21. Along the circulation path of the transport chain 21, first and second latex tanks 22, 23 storing the latex liquid L and a dryer 24 in which hot air circulates downstream of the respective latex tanks 22, 23 are installed. ing. The latex tanks 22 and 23 may be further provided in a plurality of stages according to the thickness required for rubber coating. On the downstream side of the last latex tank, a hoisting machine 25 for winding up the end of the rubber coating on the balloon mold 11 is provided, and further, the rubber coating is compressed with compressed air from the balloon mold 11 downstream through the dryer 24. A jet nozzle 26 for peeling is installed.

  The balloon mold 11 transferred by the transport chain 21 is first immersed in the latex liquid L in the first latex tank 22 to form a rubber coating, and after being temporarily dried, the second latex tank is further added. The thickness of the rubber coating is increased by being immersed in the latex liquid L of 23. The number of latex tanks to be installed is not limited to one tank, and two or more latex tanks may be provided, and may be determined according to the thickness of the rubber film required for the rubber balloon.

  After the balloon mold 11 having the rubber coating formed in the latex tanks 22 and 23 passes through the respective latex tanks 22 and 23, the balloon mold 11 is temporarily dried with hot air from the dryer 24, and gradually vulcanized. The skirt part of the rubber coating is wound up by the hoisting machine 25 to form the ring-shaped mouth ring 4. Next, vulcanization is completed while being heated while entering the dryer 24 again. Finally, when leaving the dryer 24, the rubber coating is peeled off from the balloon mold 11 by the compressed air sprayed from the spray nozzle 26, and the rubber balloon 1 is collected on the collection tray 27.

  As shown in FIGS. 1 and 2, the rubber balloon 1 collected in this way has a rib-like protrusion 5 corresponding to the concave groove 15 of the balloon mold 11 on the inner wall surface of the balloon body 2 in a lattice pattern. Is formed. Therefore, when the rubber balloon 1 is inflated, the remaining rubber film becomes transparent with the protrusions 5 made non-transparent, and a lattice pattern based on the protrusions can be revealed on the surface of the balloon body 2. Thus, according to the present invention, a patterned rubber balloon can be obtained without providing a printing process or a patterning process of colored rubber paste.

It is a front view at the time of the non-inflation of the rubber balloon which consists of embodiment of this invention. It is XX arrow sectional drawing in FIG. It is a front view when the rubber balloon of FIG. 1 is inflated. It is a front view which illustrates the balloon type | mold used for manufacture of the rubber balloon of this invention. It is the schematic which illustrates the manufacturing process of the rubber balloon of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rubber balloon 2 Balloon main body 3 Blowing part 5 Protrusion 6 Ground part 11 (balloon main body) Balloon type | mold 22, 23 Latex liquid tank 24 Dryer 25 Hoisting machine 26 Injection nozzle

Claims (5)

The balloon body is made of a colored rubber composition, and when the balloon body is non- inflated , the balloon body has a pattern of protrusions protruding from the inner wall surface , excluding the protrusions of the balloon body. The thickness of the ground portion is substantially uniform in the range of 0.5 to 1.5 mm, and when the balloon body is inflated , the remaining rubber film is made transparent while leaving the protrusions non-transparent, A rubber balloon that reveals a pattern of protrusions on the surface.   The rubber balloon according to claim 1, wherein a height at which the protrusion protrudes from an inner wall surface of the balloon body is 0.1 to 1.5 mm.   The rubber balloon according to claim 1 or 2, wherein the colored rubber composition is a rubber composition in which at least a pigment, a vulcanizing agent, and a vulcanization accelerator are blended with a rubber component of natural rubber or synthetic rubber. A balloon mold having a pattern of concave grooves on the surface is used, a rubber film of a latex liquid is formed on the surface of the balloon mold, and after the rubber film is dried, it is released from the balloon mold and protrudes to the inner wall surface. have a pattern consisting of parts, the manufacturing method of a rubber balloon for producing a rubber balloon was substantially uniform in thickness in the range of 0.5~1.5mm the land portion except for the projection of the balloon body.   The method for producing a rubber balloon according to claim 4, wherein the depth of the balloon-shaped concave groove is 0.1 to 1.5 mm.

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