JPH11292082A - Bottle-body handle and handle separation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain suitable handling of a recovered bottle body, by easily separating a handle from the bottle main body of the handled bottle body by human strength when necessary, by separately recovering the handle from the bottle main body at low costs easily, and by sufficiently reducing the volume of the bottle main body. SOLUTION: A handle plate 11 is integrally provided between the upper and lower ends of a pair of fitted beam pieces 12 vertically arranged in parallel with each other. Having the fitted beam pieces 12 as inserts, a bottle main body 1 is obtained by biaxial stretching blow molding. Bendable parts 16 are formed in the fitted beam pieces 12 of a handle 10, firmly fitted in a bottle main body 1 in a clasping manner in the areas of the fitted beam pieces 12, and the handle plate 11. By the bend and deformation of the bendable part 16 of the handle 10, the separation of the handle 10 from the bottle main body 1 and a reduction in the volume of the bottle main body 1 are easily achieved by human strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle handle firmly and integrally assembled to a synthetic resin bottle body which is biaxially stretch blow-molded by using insert molding means. The present invention relates to a method for separating and collecting handles made of different synthetic resin materials easily from the bottle body.

[0002]

2. Description of the Related Art A large handle that is firmly assembled with a bottle body to be biaxially stretched and blow-molded at the same time as the bottle body is formed by using an insert molding technique. As shown in Japanese Patent Application No. 5-164827, which has been proposed by the present applicant, a number of such synthetic resin bottles have been proposed and used in large quantities.

This kind of synthetic resin bottle with a handle is made of a large bottle body made of polyethylene terephthalate resin formed by biaxial stretching blow molding, and a hard polyethylene resin, polypropylene resin, or the like that exhibits sufficient and stable strength. The handle formed by injection molding into a shape is extremely firmly assembled and fixed by using an insert molding technique, so that the handling of the bottle with the handle is easy and stable.

In recent years, there has been a strong demand for collecting synthetic resin bottles, especially polyethylene terephthalate resin bottles, and recycling the molding materials. To use it,
Since it is necessary to collect the single-resin article, the collected synthetic resin bottle with a handle is separated into a bottle main body and a handle.

[0005]

However, in the above-mentioned conventional synthetic resin bottle with a handle, since the assembly between the bottle body and the handle is extremely strong, the bottle body and the handle must be separated. Since it is almost impossible to achieve by human power, a special device for separation is required, and this device needs to prevent the fragmented handle part from entering the bottle body collection side. However, there is a problem that the structure is complicated and expensive, or the handling is troublesome and requires a great deal of manpower.

[0006] In general, such a synthetic resin bottle with a handle is configured by assembling a handle with a vertical beam in a concave portion which is depressed at the rear of the body of the bottle body. There is a problem that the handle functions as a reinforcing vertical beam for the concave portion, and the crushing and volume reduction processing at the time of handling the collected bottle is insufficient.

Therefore, the present invention has been made to solve the above-mentioned problems in the prior art, and the separation of a handle from a bottle body of a synthetic resin bottle with a handle can be easily achieved manually when necessary. The technical task is to make it possible to easily separate and collect the handles of synthetic resin bottles with handles without requiring equipment costs, and to sufficiently reduce the volume of synthetic resin bottles with handles. It is an object of the present invention to easily achieve the liquefaction and obtain a suitable handling of the recovered bottle.

[0008]

Means for Solving the Problems Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention is directed to a pair of assembled beam pieces having a front end face and arranged in parallel. A handle plate is integrally provided between the upper and lower ends, an engaging protrusion is protruded on the opposing surface of the beam piece with both sets, and a fitting protrusion is protruded on the front end face. In the center of the, has a configuration in which a bent portion with a reduced thickness is installed horizontally, beam pieces with both sets, the tip surface,
The engagement protrusion and the fitting protrusion are used as an insert material, and are integrally assembled in a recess formed in the rear portion of the body of the synthetic resin bottle body to be biaxially stretch blow-molded, which is different from the bottle body. It is made of a synthetic resin material.

A second aspect of the present invention is the same as the first aspect, except that the bent portion of the handle plate is provided on the inner surface of the handle plate.

According to a third aspect of the present invention, a handle plate is integrally provided between upper and lower ends of a pair of assembled beam pieces having a front end face and arranged in parallel with each other. In addition to projecting the engaging projection on the surface and projecting the fitting projection on the front end surface, the bent part with reduced thickness is placed horizontally at the center of the beam with both sets and the handle plate to handle Comprising this handle, a beam with both sets,
Using the tip end surface, the engaging projection and the fitting projection as insert materials, integrally assembling them into a recess formed in the rear part of the body of the synthetic resin bottle main body to be biaxially stretch blow-molded, and a handle in the bottle. Constructing the bottle as a synthetic resin material different from the main body, pressing the handle plate of the handle in the recess direction of the bottle main body,
In a state where the bottle body is folded at the bent portion, the bottle body is folded in two at the concave portion from above and below, and after the bottle body is bent, the handle is pulled off from the bottle body.

According to a fourth aspect of the present invention, there is added the requirement of performing the two-fold bending of the concave portion in a state in which the body of the bottle body is squashed flat back and forth in the third aspect of the invention. It is.

The bottle body is biaxially stretch-blow-molded by using the two pieces of the handle, the tip surface thereof, the engagement projection and the fitting projection as an insert material. Securely attach the handle.

When the handle is assembled to the bottle body, the two assembled beam pieces hold the bottom of the concave portion of the bottle body in a state in which the engaging projections are locked, and the tips of the two assembled beam pieces are attached. The fitting projections protruding from the surface are fitted and locked to the bottle main body to secure and maintain the engagement of the engaging projections to the bottle main body, and the handle is assembled to the bottle main body so that the handle cannot be displaced up and down. A strong and stable assembly of the handle to the bottle body is achieved and maintained.

When the handle plate attached to the bottle body is pressed inwardly of the concave portion, the handle plate is bent at the bent portion, so that the handle plate loses its function as a reinforcing vertical beam for the concave portion, thereby causing the bottle to lose its function. The concave portion of the main body can be easily folded in two from above and below.

When the bottle main body is folded in two from the top and bottom at the concave portion, the two assembling beam pieces of the handle are easily bent at the bent portions, so that the handle is bent and deformed together with the concave portion of the bottle body. The deformation of the concave portion of the bottle main body is a crushing deformation close to a curved deformation, whereas the deformation of the assembling beam piece is a simple bending deformation, so that the engagement and fitting function portion of the handle is In the form of being disengaged and displaced from the engaging and fitting function portion of the concave portion, the detached state or the assembled state is deteriorated.

Therefore, the handle can be easily removed from the bottle body by bending the bottle body in two folds from the top and bottom at the concave portion thereof, waiting for its elastic recovery, and pulling the handle outward. Separation and recovery of bottles can be easily and suitably achieved.

The handle separated from the bottle main body is broken at the bent portion but is not divided, so that a part of the handle does not enter the bottle main body side, and the bottle main body is not broken. Good separation between the handle and the handle is achieved.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. Bottle body 1 which is a large polyethylene terephthalate resin bottle formed by biaxial stretch blow molding
Has a concave portion 3 recessed in the rear portion of the upper half portion of the body portion 2,
A relatively wide ridge-like vertical protrusion 5 along the vertical direction is provided at a substantially constant height at the center of the bottom surface 4 of the recess 3 which is a substantially flat surface having an upright central portion excluding the upper and lower ends. Thus, the concave portion 3 is formed so as to protrude in a bulging shape over the entire height range.

On both side protruding end sides of the vertical protruding portion 5, a protruding strip 6 in the form of a vertical protruding strip is protruded. An engagement groove 7 as an engagement function portion is formed between the upper and lower portions. Also, in the recess bottom surface 4 near the center and the upper and lower ends along the height direction of the bulging piece 6,
A blind hole-shaped fitting hole 8 as a fitting function part is formed.

On the protruding end wall of the vertical protrusion 5 of the bottle body 1, four horizontal grooves 9 functioning as reinforcing ribs are arranged side by side at substantially equal intervals.

A handle 10 which is an injection-molded product of a relatively hard synthetic resin such as polyethylene, polypropylene, nylon or the like, and which provides a part of the mold surface of the bottle body 1, has upper and lower ends curved backward and parallel. A flat handle plate 11 is integrally provided between the upper and lower ends of a pair of bar-shaped assembled beam pieces 12 disposed in the form of a bridge.

At the center of the beam piece 12 with both sets, and at the upper and lower ends thereof which start to be bent, a square piece-like fitting projection 15 is provided so as to form a fitting function portion on the handle 10 side. Braided beam 12
A protruding strip-shaped engaging protruding piece 14 protrudes from the opposing side face to form an engaging functional portion on the handle 10 side.

The central part of the inner surface (front surface) of the handle plate 11 and the central part of the inner surface (rear surface) of the beam piece 12 with both sets have a groove structure so that they are thinner than other parts. A bent portion 16 is provided horizontally.

Since the both bent portions 16 are thinner than the other portions, the handle plate 11 and the beam piece 12 with both sets are easily bent and deformed at the bent portions 16. In ordinary handling of a bottle, the mechanical strength is such that it does not bend or deform.

Since the bent portion 16 of the handle plate 11 is provided on the inner side surface of the handle plate 11, the groove structure portion forming the bent portion 16 is not exposed as an external appearance of the bottle, so that the handle is formed. The bent portion 16 of the plate 11 does not deteriorate the appearance of the bottle as a product.

When the handle 10 is assembled to the bottle body 1 by insert molding means, the vertical projection 5 and the engagement groove 7 of the bottle body 1 are formed with the engaging projection 14 of the handle 10 as a part of the molding die surface. This is achieved by forming the fitting hole 8 of the bottle body 1 with the tip end face 13 of the assembled beam piece 12 of the handle 10 and the fitting projection piece 15 as a part of the mold surface.

The assembled form of the handle 10 with respect to the bottle main body 1 is as follows.
Is engaged with the engagement groove 7 of the bottle main body 1 so that it cannot be disengaged.
The vertical protrusion 5 of the bottle body 1 is sandwiched from both sides, and the handle 10 is not displaceable in the vertical direction with respect to the bottle body 1 by fitting the fitting protrusion 15 and the fitting hole 8. It has become.

When the bottle body 1 and the handle 10 are separated and collected, the handle plate 11 is pressed toward the concave portion 3 while the entire bottle body 1 is squashed flat back and forth, and the handle plate 11 is bent. While bending at 16, as shown in FIG.
Is folded up and down in the recess 3 in two.

The folded beam piece 12 of the handle 10 also bends and deforms at the bent portion 16 due to the two-fold bending in the concave portion 3 of the bottle main body 1. However, the folded beam piece 12 is bent in the bending direction. On the other hand, since the concave bottom surface 4 of the bottle main body 1 is located outside, a gap occurs between the assembled beam piece 12 and the concave bottom surface 4, and the engagement groove 7 of the bottle main body 1 is formed with the concave bottom surface 4. Since it is a configuration formed between the vertical protrusion 5 protruding from the concave bottom surface 4 and the bulging piece 6 formed, it is crushed and deformed by bending.

Due to the displacement between the bottom surface 4 of the concave portion and the assembled beam piece 12 and the crushing deformation of the engaging groove 7, the fitting projection 15 of the handle 10 is moved to the fitting hole 8 of the bottle body 1. With the handle 1
The engagement projection 14 of 0 is locked out or almost locked out of the engagement groove 7 of the bottle body 1.

As described above, the two-fold bending deformation at the concave portion 3 of the bottle body 1 greatly reduces the strength of the assembling assembling between the bottle body 1 and the handle 10 and the assembling of the assembling. The separation of the handle 10 from the bottle body 1 can be easily and smoothly achieved by a manual pulling-out operation.

When the bottle body 1 is bent, the handle plate 11 of the handle 10 has already been bent, so that it does not function as a vertical beam, and the assembled beam piece 12 of the handle 10 is also bent. Since it is easy to bend at 16, the folding process of the bottle main body 1 is achieved without being disturbed by the handle 10.

[0033]

Since the present invention has the above-described structure, the following effects can be obtained. According to the first aspect of the present invention, since the handle plate and the assembled beam piece are bent at the bent portion, the entire handle can be easily bent.
The bending deformation operation of the bottle main body for separating the handle can be easily achieved.

Since the handle can be formed simply by additionally forming the bent portion on the handle plate and the assembled beam piece, the handle can be manufactured easily and inexpensively, and the handling at the time of forming the bottle body. No new operation is required, and it can be handled in the same manner as in the past, so that it can be implemented easily and inexpensively.

According to the second aspect of the present invention, since the bent portion of the handle plate is provided inside, the bent portion of the handle plate is located in a hidden position. Does not cause the disadvantage of deteriorating the appearance of the bottle.

According to the third aspect of the present invention, the bottle main body and the handle are folded by a very simple operation such that the concave portion of the bottle main body is folded in two from above and below with the handle plate being bent. Since the sorting can be performed, the sorting and collection of the handle can be easily and promptly achieved without requiring any special equipment.

The separated and collected handle is bent by the handle plate and the assembled beam, and may be broken in some cases. There is no inconvenience that part of the handle is mixed in the bottle body, and high-quality sorting of the handle can be reliably achieved.

The folding of the bottle body for handle separation can be effectively performed as it is after the handle separation, ie, the folding of the bottle body, that is, the function of effectively reducing the volume of the bottle body. Can be obtained.

According to the fourth aspect of the present invention, the folding process of the bottle body in the concave portion in a two-fold manner is facilitated,
Thereby, the sorting of the handle can be achieved more smoothly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention in a state where it is assembled to a bottle main body.

FIG. 2 is a rear view of the embodiment shown in FIG. 1 with a left half removed.

FIG. 3 is a plan sectional view taken along line AA in FIG. 1;

FIG. 4 is an overall front view of the embodiment shown in FIG. 1;

5 is an overall side view of the embodiment shown in FIG.

FIG. 6 is an overall vertical sectional side view of the embodiment shown in FIG. 4;

FIG. 7 is an explanatory diagram for a handle separation process of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Bottle main body 2; Body part 3; Concave part 4; Concave part bottom face 5; Beam piece 13; Tip surface 14; Engagement protruding piece 15; Fitting protruding piece 16;

Claims (4)

[Claims] 1. A handle plate (11) is integrally provided between upper and lower ends of a pair of assembled beam pieces (12) having a front end surface (13) and arranged in parallel with each other. An engaging projection (14) protrudes from the opposite surface of (12), and a fitting projection (15) protrudes from the distal end surface (13). In the center of the plate (11), a bent portion (16) having a reduced thickness is laterally provided and configured, and the beam piece (12) with both sets, a tip surface (13), an engagement protrusion (14) The fitting protruding piece (15) is used as an insert material, and is assembled integrally with the body (2) of the synthetic resin bottle body (1) to be biaxially stretch blow-molded into the recess (3) recessed at the rear. A bottle handle made of a synthetic resin material different from the bottle body (1). The bent portion (16) of the handle plate (11) is connected to the handle plate (1).
The handle for a bottle according to claim 1, which is provided on the inner surface of (1). 3. A handle plate (11) is integrally provided between upper and lower ends of a pair of assembled beam pieces (12) having a front end face (13) and arranged in parallel with each other. An engaging projection (14) protrudes from the opposite surface of (12), and a fitting projection (15) protrudes from the distal end surface (13). At the center of the plate (11), a handle (10) consisting of a folded part (16) with reduced thickness
Using the two-piece beam piece (12), the tip surface (13), the engagement projection piece (14), and the fitting projection piece (15) as insert materials, a synthetic resin bottle body (1 The body (2) of the bottle (2) is integrally assembled with the recess (3) recessed at the rear, and the handle (10) is made of a synthetic resin material different from that of the bottle body (1). Insert the handle plate (11) of (10) into the recess (3) of the bottle body (1).
The bottle body (1) is pressed inward and bent at the bent portion (16), and the bottle body (1) is folded in two at the concave portion (3) from above and below, and the bottle body (1) is bent. After the bending process,
A method for separating a handle, wherein the handle (10) is detached from the bottle body (1). 4. The method for separating handles according to claim 3, wherein the two-fold folding of the concave portion (3) is performed in a state where the body (2) of the bottle body (1) is flattened back and forth.