JP2000211647A - Handle and plastic bottle with handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle and a plastic bottle with handle being free from fears of insufficient strength of the bottle or in the attachment of the handle, with the wall of the bottle at the lower side of a lower attachment arm of the handle becoming extremely thin to easily produce holes. SOLUTION: For a handle equipped with a grip part 31 and attachment arms 32 and 33 extending laterally respectively from the upper and lower ends of the grip part 31 with a flange 4 protuberant continuously from the periphery at the front of the lower attachment arm 33 formed, a large-sized chamfering is formed, extending toward the upper side of the flange 4, with the center of its upside becoming high while both sides thereof becoming gently low toward both sides of the protuberance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bottle with a handle in which a separate handle is attached to a bottle body.

[0002]

2. Description of the Related Art In recent years, bottles made of plastics such as polyester resin represented by polyethylene terephthalate, which is lighter and more impact-resistant than glass,
A plastic bottle with a handle attached to a separate handle is put to practical use. In particular, a grip portion and a mounting arm projecting laterally from upper and lower ends of the grip portion into a grip mounting recess formed on the side surface of the bottle body. A plastic bottle with a handle, which is obtained by attaching a handle provided with a handle such that the tip of the mounting arm is embedded in a wall in the recess for mounting the handle, is commercially available.

As shown in a front sectional view of FIG. 6, the plastic bottle with a handle is provided with a separate handle 3 and a tip of the mounting arm 32, 33 in advance in a blow mold. The bottle body 1 is blow-molded in the blow-molding mold, and at the same time, the bottle walls 20 wrap the ends of the mounting arms 32 and 33 and are integrated. Have been. Projecting pieces 320, 330 are formed outward at the tips of the mounting arms 32, 33.
Reference numeral 330 also functions as a stopper to be embedded in the bottle wall 20.

[0004]

However, in the case of the above-mentioned conventional plastic bottle with a handle, the lower mounting arm 33 can be used especially when the grip 3 is made of a material which does not slip easily with each other, such as the same material as the bottle body 1. There is a problem that the bottle strength and the attachment strength of the handle may be uneasy, for example, the bottom wall 201 of the lower side becomes extremely thin and a hole is easily opened.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, when the material of the handle is a resin that does not slip easily with the bottle body, the bottle body is blow-molded and the handle is simultaneously attached to the handle. At the time of unification, friction occurs between the bottle wall and the lower projecting piece of the lower mounting arm tip of the handle,
It has been found that the bottle wall tends to be thinner toward the outside due to being scratched or overstretched, and the present invention has been achieved. A mounting arm protruding from the handle, and a handle body having a flange portion continuously projecting around the entire front end of the lower mounting arm, wherein a large chamfered portion is formed on the upper side of the flange portion toward both sides. A handle portion, wherein the upper central portion is higher and the lower portion gradually decreases toward the protrusions on both sides, and a grip attaching recess formed on the side surface of the bottle main body; With a mounting arm that protrudes laterally from the upper and lower ends of the part, a handle that forms a flange that protrudes continuously around the entire periphery of the tip of the lower mounting arm,
In a plastic bottle with a handle attached by embedding the tip of the attachment arm into a wall in a recess for attaching a handle, a large chamfered portion is formed on both sides of the upper portion of the flange portion so as to form an upper central portion. A plastic bottle with a handle, characterized in that the plastic bottle has a high height and gradually lowers toward the protrusions on both sides.

The handle body and the plastic bottle with the handle of the present invention form a large chamfer toward both sides on the upper side of the flange portion continuously projecting around the front end of the lower mounting arm. The central part is high and gradually lowers toward the projecting parts on both sides, so the bottle wall is softly received by the entire flange part, so it is difficult to become thin, and it moves smoothly along the large chamfer on the upper side. It can be wrapped up to both sides of the collar.

[0007] The bottle body of the present invention uses a plastic, for example, a polyester resin typified by polyethylene terephthalate, to first form a tubular material (hereinafter, referred to as a preform) as an intermediate product by injection molding.
Next, the preform is set in a blow molding mold while being heated to a stretching temperature, for example, 90 to 120 ° C. in the case of polyethylene terephthalate, and biaxially stretch blow-molded by blowing high-pressure air or the like into the preform. can get.

In the present invention, the handle may be made of a polyester resin represented by polyethylene terephthalate, polypropylene, polyethylene or the like.

In particular, when the same polyester resin as that of the bottle body is used as the material of the handle body, it can be treated together with the body when it is collected and recycled, and recycled resin is used as the handle body. It is preferable because it can be used.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings.

FIGS. 1 (a) and 1 (b) are a front view and a side view showing an example of a handle of the present invention, FIG. 2 is an enlarged front view showing the vicinity of a lower mounting arm of FIG. 1 (a), and FIG. 2 is an AA cross-sectional view of FIG. 2, FIG. 4 is an enlarged front view of the vicinity of a lower mounting arm showing another example of the handle body of the present invention, and FIG. 5 is a partial cutaway showing an example of the plastic bottle with a handle of the present invention. FIG. 6 is a partially cutaway side view showing an example of a conventional plastic bottle with a handle.

As shown in FIGS. 1 to 4, the handle body of the present invention includes a grip portion 31 and mounting arms 32, 33 projecting laterally from upper and lower sides of the grip portion 31, and a lower mounting arm. In the handle body 3 having the flange 4 continuously projecting around the entire periphery of the leading end of 33, a large chamfered portion 42 is formed on both sides of the upper side 40 of the flange 4 so that the upper central portion is high. The handle body 3 is characterized in that it gradually lowers toward the both-side projecting portions 41.

The height h ₄₀ of the upper side 40 of the flange 4 is 2 to 5 m.
m, the protrusion width ws ₄₁ of both side protrusions 41 of the flange 4 is 0.5
To 3 mm, overall width w ₄ of the collar part 4 depending on the size of the bottle preferably in the range of 20 to 30 mm.

As shown in the front view of FIG. 2, the shape of the flange 4 in the handle of the present invention is such that a large chamfered portion 42 is formed on the upper side toward both sides, and the center of the upper side 40 is high. A trapezoidal shape with a sharp corner that gradually lowers toward the both-side projecting portion 41, or a larger chamfered portion 42 as shown in the front view in FIG. The bottle wall is preferable because it moves more smoothly along the large chamfered portion 42 of the flange and wraps it.

If the height h ₄₀ is less than 2 mm, or the width ws _{41 of} both sides is less than 0.5 mm, the amount of engagement with the bottle wall 20 is too small, and the retaining effect may be insufficient. And the height h ₄₀ exceeds 5 mm,
If the width ws _{41 of} both sides exceeds 3 mm, the bottle wall cannot sufficiently pass over the protruding piece 4, and a large gap is formed between the upper surface or both sides of the lower mounting arm 33 and the bottle wall 20. The above range is preferable because the appearance may be deteriorated.

In the handle of the present invention, a grip portion 31
By attaching the inner plate 51 and the outer plate 52 to the mounting arms 32 and 33 protruding laterally from both the upper and lower sides of the grip portion 31, the inner plate 51 and the outer plate 52 are connected to each other by a central vertical rib 53 to form an H-shaped cross-sectional structure. However, it is preferable because sufficient strength can be obtained.

[0017] In the handle of the present invention, the lower mounting arm 33, as shown in FIG. 3, when the advance wider than the tip width ws ₃₃ of width w ₃₃ of the grip-side grip portion, the grip portion 31 This is preferable because the vertical stress applied from the upper side is dispersed over a wide area on the bottle wall below the lower mounting arm 33, and buckling deformation is less likely to occur.

In the handle of the present invention, as shown in FIGS. 1 to 4, the distal end of the lower mounting arm 33 is close to the distal end surface (at a position of 4 mm or less from the distal end surface). It is preferable that a cross section perpendicular to the length direction, which is a transverse cross section connected by a central vertical rib 53, has an H-shaped structure. This is because, in order to obtain sufficient strength without taking the H-shaped structure, it is necessary to increase the thickness, and if the thickness is increased, shrinkage in the cooling process during injection molding of the handle body is required. This is because dents (also referred to as sink marks) tend to occur particularly at the tip end surface, and the sink marks are less noticeable in the case of an H-shaped structure.

In order to manufacture the handle 3, an injection mold (not shown) which is composed of a movable mold and a fixed mold and which can be divided from a portion corresponding to the center of the handle 3 is used. Usually, the grip portion 31 and the lower mounting arm 3
3 and the like connect the inner plate 51 and the outer plate 52
When the cross section perpendicular to the length direction is H-shaped, the dividing direction of the injection mold and the product handle 3
There is also an advantage that the step of dividing the two molds and taking out the product handle 3 is easy because no undercut portion which becomes a resistance in the pulling-out direction is generated.

As shown in FIGS. 3 and 5, the plastic bottle with a handle according to the present invention is provided with a grip portion 31 and a grip portion 31 formed in a lateral direction from both upper and lower ends of the grip portion 31 in a recess portion 2 formed in a side surface of the bottle body 1. The handle body 3 is provided with the mounting arms 32 and 33 protruding, and the handle body 3 formed with the flange 4 continuously protruding around the entire periphery of the tip of the lower mounting arm 33.
In a plastic bottle with a handle, which is mounted by embedding the front end of the flange 3 into the wall 20 in the recess 2 for mounting the handle, a large chamfered portion 42 is formed on the upper side of the flange 4 toward both sides, and The central part is high and both sides protrude 4
A plastic bottle with a handle, characterized in that the plastic bottle gradually lowers toward 1.

The plastic bottle with a handle of the present invention is
When the bottle body is blow molded and integrated with the handle body 3 at the same time, the continuously protruding flange portion 4 is smooth, so that the bottle wall 20 moves smoothly from the upper side 40 of the flange portion 4 along both side protruding portions 41. The wrapping function is performed,
The bottle wall 20 wraps around to the back side of the both side protruding portions 41 to form a cover margin, and is integrated with the cover margin of the upper side 40 to form a cover margin over the entire periphery of the flange portion 4, and the mounting strength is extremely large. Is preferred.

At this time, if the front shape of the flange portion 4 is a trapezoidal shape with a sharp corner in FIG. 2 or a triangular conical shape as a whole in FIG. This is preferable because the cover margin is formed by wrapping around, and the cover margin is easily formed over the entire periphery of the flange portion 4 by being integrated with the cover margin of the upper side 40.

In general, the margin of the upper side 40 tends to be easily formed, and the margin of the both-side protruding portion 41 tends to be difficult to form. However, the large chamfered portion 42 formed on the upper side 40 toward both sides reduces the resistance. It is considered that the bottle wall 20 easily turns around to the back side of the both-side projecting portion 41.

[0024]

The handle body and the plastic bottle with the handle of the present invention have a large chamfered portion on both sides of the upper side of the flange portion continuously projecting around the front end of the lower mounting arm. The upper central part is high, and it gradually lowers toward the protrusions on both sides, so the bottle wall can be softly received by the entire flange, so it is difficult to become thin, and the bottle wall along the large chamfer on the upper side It can move smoothly and wrap around both sides of the flange.

[Brief description of the drawings]

FIG. 1 (a) is a front view showing an example of a handle body of the present invention, and FIG. 1 (b) is a side view of FIG. 1 (a).

FIG. 2 is an enlarged front view of the vicinity of a lower mounting arm of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged front view of the vicinity of a lower mounting arm showing another example of the handle body of the present invention.

FIG. 5 is a partially cutaway side view showing an example of the plastic bottle with a handle of the present invention.

FIG. 6 is a partially cutaway side view showing an example of a conventional plastic bottle with a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottle main body 2 Handle mounting recessed part 3 Handle body 4 Locking flange plate part 31 Handle part 32 Upper mounting arm 33 Lower mounting arm 40 Upper side 41 Both side protruding part 42 Chamfer part 51 Inner plate 52 Outer plate 53 Central vertical rib

Claims (2)

[Claims] 1. A handle body comprising: a grip portion; and a mounting arm protruding laterally from both upper and lower sides of the grip portion, and a flange portion formed continuously and protruding all around the tip of the lower mounting arm. 3. The handle body according to claim 1, wherein a large chamfered portion is formed on both sides of the upper portion of the flange portion so that a central portion on the upper side is high and the lower portion is gradually lowered toward both side protruding portions. 2. A handle mounting recess formed in a side surface of a bottle body, comprising a grip portion and mounting arms projecting laterally from upper and lower ends of the grip portion, and continuous around the entire periphery of the tip of the lower mounting arm. In a plastic bottle with a handle, which is formed by embedding a handle formed with a flange portion protruding into the wall of the recess for mounting the handle, the handle is formed on the upper side of the flange portion toward both sides. A plastic bottle with a handle, wherein a large chamfered portion is formed so that an upper central portion is higher and gradually lowers toward both side protruding portions.