JPH03297621A - Manufacture of bottle with handle - Google Patents

Abstract

PURPOSE:To fit a handle with a bottle and manufacture the bottle with handle having a high mounting strength value by moving the handle in the direction opposite to the expanding direction of a parison just before and after the parison is formed into the desired bottle shape. CONSTITUTION:A parison 3 having the outer diameter phip and a handle 4 having the width A are disposed in an inner hollow section 2 of a mold 1. The bonded section of the handle 4 is located at a site of distance Lo from the center of the parison 3. The handle 4 is pushed into the mold 1 by the distance X by means of a cylinder 7. Pressurized fluid 6 is flowed from an opening 5 of parison provided on the upper section of the parison 3 into the parison 3, and the parison 3 is expanded into the desired shape to be determined by an inner hollow section 2 of the mold 1. Just before and after the parison 3 is formed into the desired bottle shape, the handle 4 is moved in the direction opposite to the expanding direction of the parison 3 shown by an arrow mark 8 by the cylinder 7. Resin constituting the bottle is fed in and around a bonding section where the handle 4 is bonded with the bottle, and the handle 4 and the bottle are fitted together.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to a method for manufacturing a bottle with a handle.

[Prior Art] A method of manufacturing a plastic bottle with a handle by integrating a bottle body made of polyethylene terephthalate or the like and a handle body made of polyolefin or the like during blow molding is described in Japanese Patent Application Laid-Open No. 63-95931. After holding the parison and the handle body correctly adjacent to each other in advance, and in that state, both are simultaneously transported and placed in the blow molding mold,
A method is disclosed in which a parison is blow-molded by blowing pressure fluid into the parison to integrate the bottle and the handle.

[Problem to be solved by the invention] However, the bottle with a handle manufactured by the above-mentioned conventional technology has the following problems:
The fit between the molded bottle and the handle may be insufficient, and there is a risk that the handle may come off the bottle if the handle is pulled too hard or liquid is poured into the bottle cup. Therefore, care must be taken when handling the bottle with a handle, and furthermore, it is not suitable for placing heavy objects into the container.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for manufacturing a bottle with a handle, which allows the bottle and the handle to be tightly fitted together.

[Means for Solving the Problems 7] An object of the present invention is to arrange a parison and a handle body in a blow-molding mold, and then blow a pressure fluid into the parison to make the parison into a bottle of a desired shape. A method for manufacturing a bottle with a handle that integrates a handle body with a handle body, characterized in that the handle body is moved in a direction opposite to the expansion direction of the parison from immediately before to immediately after the parison assumes a desired bottle shape. This is achieved by a method for manufacturing a bottle with a handle.

[Action] In other words, it moves towards the parison. On the other hand, the parison swells toward the handle body due to the inflow of pressure fluid.

In this way, the parison faces toward the handle body, and the handle body faces toward the parison, so that the synthetic resin forming the bottle can wrap around the joint of the handle body, and the handle body and bottle are firmly fitted. can be matched.

[Example] The present invention will be described in detail below, but the present invention is not limited thereto.

FIG. 1 is a sectional view of one embodiment showing the positional relationship between the parison and the handle body in the blow molding die.

In the inner cavity 2 of the mold 1, there is a parison 3 with an outer diameter φ and a width A.
A handle body 4 is arranged. Here, the joint of the handle body 4 is located at a distance of LO from the center of the parison 3.

Further, the handle body 4 is pushed into the mold 1 by a distance X by the cylinder 7.

The operation of this embodiment will be explained.

Pressure fluid 6 is blown into the parison 3 through an opening 5 provided in the upper part of the parison 3, and the parison 3 is defined by the inner space 2 of the mold 1. Immediately after, the cylinder 7 presses the handle body 4. By moving the parison 3 in the direction opposite to the expansion direction shown by arrow 8, the resin constituting the bottle wraps around the joint where the handle body 5 joins the bottle, and the handle body 4 and the bottle fit together. .

At this time, it is preferable that the moving speed of the handle body 4 is approximately the same speed as the swelling speed of the parison 3.

Further, it is preferable that the relationship between the distance X in which the handle body 4 is pushed into the bottle by the cylinder 7 and the width A of the handle body is O15fl≦X≦n+m.

In a bottle with a handle, when a relationship is established between the outer diameter φ1 of the parison and the distance between the joint of the handle pushed in by the cylinder 7 and the center of the parison,
The handle attachment further increases the strength.

However, FIG. 1 shows the state before the handle body is pushed in, and the distance between the handle body and the center of the parison in the figure. is represented by L=L−X.

Hereinafter, according to the manufacturing method explained above, a 62 t polyethylene terephthalate parison was used to create a parison with a height of about 30 mm.
A 1.8j bottle with a handle was molded with a diameter of 0 mm and a body diameter of approximately 100 D and a shape corresponding to the aerial part of the mold shown in FIG.

In addition, the width of the handle body A=3C)++n, the outer diameter of the parison φ
−30+w+n, the distance L from the joint after pushing to the center of the parison was 20 m, and the distance X for pushing the handle body into the bottle was varied between 0 and 1011I11.
Got 1,84! Table 1 shows the strength of attachment and detachment of the handle of a bottle with a handle. In addition, the strength measurement was performed using Pu5h
The test was carried out at room temperature using Pu1l 5cale (■ manufactured by Komura Seisakusho).

(Margin below) No. 1 table

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the positional relationship between the parison and the handle within the blow molding die. 1...Mold, 3...Parison, 4...Handle body, 6
... Pressure fluid, 7... Cylinder As is clear from Table 1, when X = 0, the grip strength is insufficient at 80 kg, but when the handle body is pushed into the bottle, the grip strength increases. It becomes more than 100 k+r, and it can be seen that the joint of the handle body and the bottle are strongly fitted. Further, when X=1 to 311I11, the detachment strength is particularly strong. [Effects of the Invention] As is clear from the above embodiments, by moving the handle body in the opposite direction to the swelling direction of the parison, the handle body and the bottle fit together, resulting in a bottle with a handle that has a high attachment/detachment strength value. can be manufactured.

Claims (1)

[Claims] A handle that, after placing the parison and the handle in a blow-molding mold, blows pressure fluid into the parison to shape the parison into a bottle of a desired shape, and also integrates the bottle and the handle. A method for manufacturing a bottle with a handle, characterized in that the handle body is moved in a direction opposite to the direction of expansion of the parison from immediately before to immediately after the parison assumes a desired bottle shape.