JPH08113243A - Plastic bottle with grip - Google Patents

Abstract

PURPOSE: To eliminate a clearance between the fitting part of a grip and the body, by forming a circumferential recessed rib continuously extending from the lower end of the recessed part for fitting the grip and forming a circumferential protrusive rib adjacently under the recessed rib and forming a rugged face at the lower wall of the fitting part or the grip within the width of the recessive rib. CONSTITUTION: A recessed part 2 for fitting a grip is formed at the upper side face of a blow molding bottle 1 and a recessed rib 21 is formed to continuously extend from the lower end of the recessed part for fitting a grip to the circumferential direction. A circumferential protrusive rib 22 is formed adjacently under the recessed rib 21 and a rugged face 4 is formed at the lower wall 23 of the fitting part of the grip within the width of the recessed rib 21. The rugged face 4 is made horizontal to extend from the center to the right and left faces circumferentially. It is provided in the width W within the width of grip 3. In this way, the whole shape does not lean and the clearance between the fitting part or the grip 3 and the bottle body 1 does not arise due to the warp of recessed part 2 and hence, the grip 3 is fixed more stably.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Since plastic bottles become inconvenient to handle when they are upsized, bottles in which a part of the main body is formed into a handle are used for beverages and the like. However, in a bottle made of polyester resin such as polyethylene terephthalate, it is difficult to mold the handle integrally with the bottle body. Therefore, a recess 2 is formed above the bottle 1 as shown in the front view of FIG. A bottle in which a separate handle 3 is fitted is used.

[0003]

However, in the above-mentioned conventional bottle, since the recess 2 is largely recessed inward of the bottle,
The entire bottle has an asymmetrical shape, and the lower portion 24 of the handle mounting portion below the handle mounting recess is easily stretched greatly during blow molding. Therefore, the thickness of the lower portion 24 becomes thin, and the handle 24 is deformed due to stress from the handle, external force, reduced pressure, There is a problem that the handle 3 is easily deformed by heat or the like, and it is inclined or the concave portion 2 is distorted to form a gap between the mounting portion of the handle 3 and the main body 1 or the handle 3 is easily removed.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above problems by forming an uneven surface on a portion that is easily stretched and has a small wall thickness, and its gist is to attach a handle to the upper side surface. In a blow-molded bottle in which a concave portion is formed and a handle is attached in the concave portion, a circumferential concave rib is formed continuously from the lower end of the handle attaching concave portion, and a circumferential rib is formed below the concave rib and adjacent to the circumferential direction. A plastic bottle with a handle characterized in that a convex rib is formed and an uneven surface is formed on a lower wall of the handle attaching portion within the width of the concave rib.

The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of a plastic bottle with a handle of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a partially enlarged partially sectional front view, and FIG. 4 is an example of a conventional plastic bottle with a handle. FIG.

As shown in FIGS. 1 to 3, the present invention is a blow-molded bottle 1 in which a handle mounting recess 2 is formed on an upper side surface and a handle 3 is mounted in the recess 2 in the handle mounting recess 2. The concave ribs 21 in the circumferential direction continuously from the lower end of the
And a convex rib 22 in the circumferential direction is formed adjacently below the concave rib 21, and a concavo-convex surface 4 is formed on the handle attaching portion lower wall 23 within the width of the concave rib 21. It is a plastic bottle with a handle.

A handle mounting recess 2 is formed on the upper side surface of the blow molded bottle 1, and a handle 3 is provided in the recess 2.
It is attached by appropriate means such as mechanical fitting and adhesion. In the examples shown in FIGS. 1 to 3, a method is used in which a handle 3 previously molded by injection molding or the like is set in a blow mold, and the bottle wall is entangled and attached to the handle simultaneously with blow molding.

The depth of the handle mounting recess 2 is preferably 1/4 to 1/3 of the diameter of the upper portion of the blow molded bottle 1.

The handle 3 is made by injection molding a plastic such as polypropylene or polyethylene.

The circumferential concave rib 21 is continuously formed with the handle attaching concave portion 2 having the same concave shape,
The bottle main body 1 is reinforced by being balanced in shape so as to surround the circumference of the bottle main body 1, and serves to prevent the deformation of the entire bottle together with the circumferential convex rib 22 formed below and adjacent to the circumferential concave rib 21.

The circumferential concave ribs 21 and the circumferential convex ribs 22 perform a well-balanced resistance action below the handle attaching concave portion 2 during blow molding to prevent the thickness from deviating and the handle attaching portion. It has the effect of preventing thinning of the lower part.

The concavo-convex surface 4 is formed on the lower wall 23 of the handle attaching portion within the width of the concave rib 21 to disperse the stress applied to this portion and to reinforce the shape.

As the shape of the uneven surface 4, for example, FIGS.
It is preferable to have a horizontal shape extending in the circumferential direction from the center to the left and right surfaces as shown in FIG. 2 and to provide a width W that fits within the width of the handle 3 as shown in FIG.

The concave-convex surface 4 is formed in a shape corresponding to the surface of the blow molding die and can be applied simultaneously when the bottle 1 is blow-molded.

As shown in FIG. 3, the handle 3 has a grip portion 31.
And the fitting portions 32 and 33 that project laterally from both ends of the grip portion 31, forming a generally U-shape. Protrusions 34 and 35 that stand up and down are provided at the tips of the fitting portions 32 and 33 so as to easily bite when fitted into the bottle and prevent rattling of the handle 3.

When the handle 3 is attached to the bottle main body 1, the protrusions 34 and 35 bite into the wall surface of the bottle at the innermost portion of the upper and lower surfaces of the handle attaching recess 2 (closer to the bottle center axis). It is embedded. Since the innermost portion has a large wall thickness and can be easily molded, the protrusions 34 and 35 can be surely embedded. This embedded portion becomes resistance during blow molding and causes eccentricity, but eccentricity is small due to the effect of preventing the concave ribs and convex ribs from becoming thin.

[0017]

According to the present invention, in a blow-molded bottle in which a handle mounting recess is formed on the upper side surface and the handle is mounted in the recess, a circumferential recess rib is formed continuously from the lower end of the handle mounting recess. Then, the plastic bottle with a handle is characterized in that a convex rib in the circumferential direction is formed adjacent to the bottom of the concave rib, and an uneven surface is formed under the handle attaching portion within the width of the concave rib. The circumferential concave ribs and circumferential convex ribs reinforce the shape of the bottle so that it surrounds the bottle body in a well-balanced manner. Or, the uneven surface disperses the stress applied to the lower wall of the handle attachment part and produces a reinforcing rib effect geometrically.
Not only empty bottles but also bottles filled with beverages, etc. are difficult to deform due to external force, reduced pressure, heat, etc., so the overall shape does not tilt or the recessed part is distorted and no gap is created between the handle attachment part and the main body The effect of stabilizing the handle is even more stable.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a plastic bottle with a handle of the present invention.

FIG. 2 is a front view showing an example of a plastic bottle with a handle of the present invention.

FIG. 3 is a partially enlarged partial sectional front view showing an example of a plastic bottle with a handle of the present invention.

FIG. 4 is a front view showing an example of a conventional plastic bottle with a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottle 2 Handle mounting recess 21 Circumferential concave rib 22 Circumferential convex rib 23 Handle mounting portion lower wall 3 Handle 4 Uneven surface

Claims (1)

[Claims] 1. A recess for mounting a handle is formed on an upper side surface,
In a blow-molded bottle having a handle attached in the recess, a circumferential concave rib is formed continuously from the lower end of the handle attaching concave, and a circumferential convex rib is formed under the concave rib. A plastic bottle with a handle is characterized in that an uneven surface is formed on a lower wall of the handle attaching portion within the width of the concave rib.