JP3627110B2 - Manufacturing method of glass container whose inner bottom part is recessed toward one place - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a glass container that can be manufactured in an automatic manufacturing process of a glass container, the inner bottom of which is depressed toward one place so that the contents of the glass container can be used up to the last drop. It relates to a manufacturing method.
[0002]
[Prior art]
Conventionally, for example, in an automatic bottle making process such as blow-and-blow or press-and-blow, the outer surface of the glass bottle is formed by blowing the reversal of the parison into the finishing mold. The inner surface of the bottle is generally molded following the molding of the outer surface.
[0003]
Therefore, there is almost no molding of the inner surface of the glass bottle into a special shape in the automatic bottle making process, and if it is a bottle making method that strongly affects the inner surface of the glass bottle in the automatic bottle making process, for example, FIG. As shown in FIG. 3, there is a bottle making method by internal cooling.
[0004]
In this method, when blow molding is performed after reversing and transferring the parison into the finishing mold 21, the air jet pipe 24 is inserted into the bottle mouth portion 32 to feed air over the entire inner surface of the glass bottle 31. By curing the inner surface early, the sagging of the inner surface of the bottle 31 is eliminated and a good glass bottle is formed.
[0005]
On the other hand, in the case of a glass bottle, for example, a general glass bottle into which cosmetics are placed, the bottom surface inside the bottle has a shape in which the center is slightly raised and gradually becomes lower toward the periphery. For this reason, for example, even if an attempt is made to use up to the last drop of the cosmetic product as the contents using a dropper or a brush, the cosmetic product remains in the entire inner peripheral corner portion of the bottom surface of the bottle, so that there is a drawback that it is difficult to take out. In view of this, a glass container whose inner bottom part is recessed toward one point is considered, but its shape is a flat or slightly recessed surface on the outer bottom surface of the glass bottle so as to provide a good sitting. If this is the case, the center of the inner bottom surface swells slightly according to it, and the shape gradually decreases toward the surroundings.
[0006]
[Problems to be solved by the invention]
However, the bottle-making method by the inner surface cooling blowing is only for the purpose of eliminating the sagging of the inner surface of the bottle by curing the inner surface of the bottle early, and the inner surface of the glass bottle itself is formed into a special shape. It was not for.
[0007]
In addition, in the conventional case, it was impossible to manufacture a glass container in which the inner bottom portion is recessed toward one place by the automatic bottle making process, so there is a problem that work efficiency is extremely deteriorated, In the automatic bottle making process, it has been desired to realize the manufacture of a glass container in which the inner bottom as described above is recessed toward one place.
[0008]
Therefore, in view of the above-described problems, etc., the present invention is in an automatic manufacturing process of a glass container.For example, the inner bottom portion is used so that the contents of the glass container can be used up to the last drop using a dropper or a brush. It was created as an issue to provide a manufacturing method that makes it very easy to manufacture a glass container that is recessed toward one location.
[0009]
[Means for Solving the Problems]
This invention is in a bottle making process for blowing, in which a parison is inverted and transferred into a finishing mold, and then an air jet pipe is formed from the bottle mouth to the vicinity of the inner bottom formed at the thickness of the bottle during blow molding. The above-mentioned problems are solved by inserting and blow-molding while blowing air toward one place at the bottom of the bottle.
[0010]
[Action]
The manufacturing method of the glass container in which the inner bottom portion according to the present invention is recessed toward one place is in the manufacturing process of the glass container for blowing, in which the parison is reversed and transferred into the finishing mold, and then blow molding Occasionally, an air jet pipe is inserted from the mouth of the glass container to the vicinity of the inner bottom formed in the thickness of the container, and blow molding is performed while blowing air toward one place on the inner bottom of the container.
[0011]
Then, the inner bottom of the container is dented by air pressure at the part where the air is blown, and when it is blown and molded in that state, the thickly formed inner bottom is recessed toward one place. The container is to be molded.
[0012]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1 and FIG.
[0013]
In other words, reference numeral 1 shown in FIG. 1 is a finishing die, which is used in, for example, a blow-and-blow or press-and-blow bottle making process, and is molded with a rough die (not shown). It is formed so that the parison is reversely transferred and blown.
[0014]
This finishing mold 1 is a bottom mold 3 formed so that the outer bottom surface of a glass bottle 11 as a molded glass container is a slightly depressed surface so as to have good sitting like the conventional one. A mouth mold 2 for holding the mouth portion 14 of the molded glass bottle 11 is disposed above.
[0015]
And from this mouth mold 2 part, the air ejection pipe 4 is inserted and arranged from the mouth part 2 of the glass bottle 11 to the vicinity of the inner bottom part 12 of the glass bottle 11 at the time of blow molding.
[0016]
The degree of insertion is up to the vicinity of the inner bottom 12, but the distance is slightly affected by the air jet pressure from the air jet pipe 4, but for example, as shown in FIG. The air jet pipe 4 is positioned at a distance that can be formed by the air jet power in the inner bottom portion 12 without being affected by the above.
[0017]
Then, the parison is reversed and transferred into the finishing mold 1, and then the air ejection pipe 4 is inserted from the mouth portion 14 of the glass bottle 11, and at one place on the inner bottom portion 12 of the glass bottle 11, in the illustrated case, the center Blow molding while blowing air toward the air, the portion where the air was blown is recessed by air pressure, and when the blow molding is performed in that state, the inner bottom portion 12 becomes concave toward the center. A glass bottle 11 is formed.
[0018]
In this case, the glass bottle 11 has a structure that ensures a sufficient thickness even when the bottom portion is thickened so that the inner bottom portion 12 is recessed toward the center.
[0019]
Here, in the embodiment described above as the glass container, the glass bottle 11 has been described as an example. However, other glass containers may be used, and the place where the air is blown does not have to be in the center. You may make it blown into the air by blowing it.
[0020]
As shown in FIG. 2, the glass bottle 11 formed in this manner has a shape in which the inner bottom portion 12 is recessed toward one place, so that the contents contained in the glass bottle 11 are Even if it decreases, it concentrates on the recessed portion 13 and can be used up to the last drop using, for example, a dropper or a brush (not shown). .
[0021]
【The invention's effect】
The present invention configured as described above is in a manufacturing process of a glass container that performs blowing, in which the parison is reversely transferred into the finishing mold 1, and then, during blow molding, the meat of the container is discharged from the mouth of the glass container. The air injection pipe 4 is inserted to the vicinity of the inner bottom portion 12 formed thick, and blow molding is performed while blowing air toward one portion of the inner bottom portion 12 of the container. When the attached portion is recessed by air pressure, and blow molding is performed in this state, a glass container is formed in which the inner bottom portion 12 is recessed toward one place.
[0022]
Therefore, since the process can be automatically molded by the automatic molding process of the glass container, it can be molded at a low cost without leading to a cost increase as in the prior art, and the glass obtained thereby By using a dropper, a brush, or the like, the container becomes an excellent glass container that can use the contents up to the last drop, and is a very excellent method for manufacturing a glass container.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a molding state of an embodiment of the present invention.
FIG. 2 is a front view of a glass bottle formed according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing an internal cooling blow molding state of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Finishing type 2 Mouth type 3 Bottom type 4 Air ejection pipe 11 Glass bottle 12 Inner bottom part 13 Recessed part 14 Mouth part 21 Finishing type 24 Air ejection pipe 31 Glass bottle 32 Mouth part

Claims (1)

In the glass container automatic manufacturing process for blowing, the parison is inverted and transferred into the finishing mold, and then the air jet pipe is connected from the glass container mouth to the vicinity of the inner bottom formed in the thickness of the glass container during blow molding. A method for manufacturing a glass container, wherein the inner bottom part is recessed toward one place, wherein the inner bottom part is blown and molded while blowing air toward one place on the inner bottom part of the glass container.

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