JP2000072123A - Squeezable plastic bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely squeeze a whole bottle by continuously providing two V-shaped inclined ribs and a vertical rib on a shoulder circumferential wall, continuously providing a vertical rib and two V-shaped inclined ribs on a body circumferential wall, and arranging a horizontal rib a connection part of the shoulder circumferential wall to the body circumferential wall to flatten a body part and fold it. SOLUTION: A bottle comprises a mouth cylindrical part 1, a shoulder circumferential wall 2, a body circumferential wall 3 and a bottom wall 4. V-shaped inclined ribs 9 and a vertical rib 10 are continuously provided on a pyramidal part 7 and a square cylindrical part 8 of the shoulder circumferential wall 2 to form a Y-shaped rib on the whole, and a horizontal rib 11 is arranged between the shoulder circumferential wall 2 and the body circumferential wall 3. A horizontal rib 14 is arranged between upper and lower body parts 12, 13 of the body circumferential wall 3, and a vertical rib 15 and V-shaped inclined ribs 18 are continuously provided on the upper and lower body parts 12, 13 to form an inverted Y-shaped rib on the whole. The right and left side surfaces of the shoulder circumferential wall 2 and the body circumferential wall 3 are inwardly folded with the respective vertical ribs 10, 15 as folding lines, the lower body part 13 is bent, and then, the flattened body part and the deformed bottom part are folded to squeeze the bottle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushable plastic bottle and a method for crushing the plastic bottle.

[0002]

2. Description of the Related Art In recent years, disposal of plastic waste has become a major problem, and recycling of used plastic containers, mainly PET bottles, has come into practice.
Further, in order to reduce the volume of the waste, the bottle is crushed. A crushable circular or square PET bottle is conventionally known.

[0003]

The conventional bottle has a rib extending horizontally or in a wavy shape on a bottle body.
Short ribs for facilitating the formation of folds continuous with the ribs, and vertical ribs provided at the lower end of the torso are provided. Next, bend the flat body from the bottom in the bottle axis direction and roll it in sequentially, or make the bottom and lower part of the body in contact with the bottom flat, bend in the bottle axis direction, and gradually flatten toward the mouth. The bottles are rounded off and used as waste bottles.

However, since the above-mentioned bottle is not provided with a rib extending in the vertical direction through the entire body,
When the body is pressed from the front and back in the radial direction, the bent ends on both sides of the flat body become curved surfaces, a certain thickness remains between the opposed surfaces of the flat body, and the bent ends on both sides become It did not extend linearly. For this reason, when the flat body is rolled up, a larger pressing force is applied, and if the bent portions on both sides are not flattened, the problem that the rounding cannot be easily performed occurs, and the problem that the flattening cannot be easily completed completely occurs. there were.

[0005] In the case of a soft synthetic resin or a thin PET bottle, it can be easily rolled and crushed. However, in the case of a PET bottle having a constant thickness or a thick hard synthetic resin. Has a problem that crushing is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems. In a rectangular bottle, the opposite left and right side walls of the bottle body are folded inward with the center of the wall as a fold, and the opposite front and rear side walls are simultaneously formed. An object of the present invention is to provide a rectangular plastic bottle which is pressed to flatten the bottle body, then bends the bottom of the bottle, and the flat body is folded upward in the bottle axial direction to be crushed, and a method of crushing the same. .

[0007]

In order to achieve the above technical object, the present invention provides, as a crushable rectangular plastic bottle, a mouth tube portion, a shoulder peripheral wall comprising a pyramid portion and a square tube portion, A square plastic bottle having a square cylindrical body peripheral wall composed of an upper body and a lower body, and a bottom wall,
The shoulder peripheral wall has two inclined ribs arranged in a V-shape in a pyramid portion, and a vertical rib continuous to the lower end of the inclined rib is disposed in a rectangular tube portion, and the trunk peripheral wall has an upper trunk side wall. A vertical rib is arranged in the center of the body, two inclined ribs are arranged on the lower body side wall in an inverted V shape, and a shoulder peripheral wall and an upper body, a connection part of the upper body and a lower body are provided. A lateral rib is provided around the peripheral wall.

[0008] As a method of crushing a rectangular plastic bottle to obtain a flat waste bottle, a rectangular cylindrical body composed of a mouth tube, a shoulder peripheral wall composed of a pyramid and a rectangular tube, and an upper trunk and a lower trunk is used. In a rectangular plastic bottle having a peripheral wall and a bottom wall, by pushing in the center of the wall surface of the opposed left and right side walls of the upper body and pressing the front and rear side wall surfaces, the wall surfaces of the opposed left and right side walls are folded at the center line. A crushing method is adopted, in which the flat body is folded inward and then the left and right side walls of the lower body are bent to form a flat body and a deformed bottom to form a flat waste bottle.

As a crushing method for obtaining a folded waste bottle, in addition to the above method, the deformed bottom portion and the flat body portion are overlapped and folded, and the shoulder peripheral wall is bent so as to press against the deformed bottom portion. A crushing method characterized by performing

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS.
The bottle comprises a mouthpiece 1 and a shoulder peripheral wall 2 having a rectangular cross section, a trunk peripheral wall 3 and a bottom wall 4 having a rectangular cross section, and is blow-molded with PET or a hard synthetic resin.

The mouthpiece 1 is provided with an engagement ridge 5 and a holding ring 6. The shoulder peripheral wall 2 is composed of a pyramid portion 7 having an arc at an upper corner following the cylindrical mouthpiece 1 and a prism 8 having an arc at a lower corner following the pyramid. Each of the four side walls 2a, b, c, and d of the shoulder peripheral wall 2 has a pyramid 7
Are provided with two inclined ribs 9a and 9b in a V-shape, and the rectangular tube portion 8 is provided with a vertical rib 10 which is connected to the lower ends of the two inclined ribs 9a and 9b. Then, the two inclined ribs 9 and the vertical ribs 1
0 forms a Y-shaped rib. At the lower end of the shoulder peripheral wall 2, a horizontal rib 11 connecting the shoulder peripheral wall 2 and the upper end of the trunk peripheral wall 3 is arranged so as to surround the peripheral wall.

The body peripheral wall 3 is a quadrangular cylindrical body having a circular arc at the corner, and comprises an upper body part 12 and a slightly enlarged lower body part 13, and each side wall of each body peripheral wall 3 has: Upper torso 1
2 and the lower body 13, right lateral ribs 14 extending slightly downward from the center of the side wall surface toward the left and right sides.
a and a lateral rib 14 comprising a left lateral rib 14b.
The end is connected to the end of the lateral rib 14 on the adjacent side wall at the corner of the trunk peripheral wall 3.

Each of the four side walls 12a, 12 of the upper body 12
At the center of b, 12c, 12d, a vertical rib 15 is provided continuously with the vertical rib 10 of the shoulder peripheral wall rectangular tube portion 8, and the lower end thereof is connected to the horizontal rib 14. At the center of the surface of each side wall, a corrugated reinforcing panel 16 is disposed with the vertical rib 15 interposed therebetween, and a reinforcing rib 17 is provided so as to surround the reinforcing panel 16.

Each side wall 13a, 13b, 1 of the lower body 13
Two inclined ribs 18a and 18b are provided in 3c and 13d, which are continuous with the center of the horizontal rib 14 and extend in a right and left inverted V-shape.

Each of the inclined ribs 9, 18 and the vertical ribs 10, 15
As shown in FIG. 3, each of the ribs has an arc-shaped cross section and is connected to both side walls with an arc.
In the trapezoidal groove having a cross section, as shown in FIG. 1, the groove bottom corner is formed to have a certain angle. Each of the above ribs
A variable rib for wall deformation, which is difficult to bend in the longitudinal direction and has a role as a reinforcing rib.However, the cross section of the rib is deformed in the horizontal direction, and the connection with the wall is bent, and the variable rib is The wall on both sides is easily bent as an axis. When the bending angle increases, plastic deformation occurs beyond the elastic limit at the connection portion with the rib body or the wall surface, and the deformed shape can be maintained.

Next, the crushing action of the bottle will be described with reference to the drawings. First, the outline of the method of crushing the bottle will be described. First, as shown in FIG. 3, the center of the left and right side walls of the body wall portion 3 is pushed in from the left and right, and the front and rear side walls (front and rear, left and right are shown in FIGS. With reference to the bottle axis in 2 and 3, when the bottle is in a horizontal state, the front and rear are up and down, and the upper body 12 of the body peripheral wall 3 is pushed as shown in FIG. When flattened, the lower body 13 is also bent, so that a flat bottle composed of the flat body 3A and the deformed bottom 4A can be obtained.

Next, the deformed bottom portion 4A of the bottle is
When this is rotated about the axis, a flat waste bottle as shown in FIG. 5 and a folded waste bottle as shown in FIG. 7 can be obtained by further folding the deformed bottom 4A.

Next, the operation at the time of crushing based on the configuration of the bottle will be described. First, when the left and right side walls 2c and 2d of the shoulder peripheral wall diagonal cylindrical portion 8 are pushed in from both sides, the two side walls 2 of the shoulder peripheral wall 2 are pushed.
The c and 2d planes are reversely deformed and influenced by the upper body 12.
The left and right side walls 12c and 12d also reversely deform.

That is, the deformation of the shoulder peripheral wall 2 depends on the
The upper portion of the pyramid portion 7 of the shoulder peripheral wall 2 is thick, and the V-shaped inclined ribs 9a and 9b do not deform in the longitudinal direction.
In the pyramid portions 7 of the left and right side walls 2c and 2d, the wall surface is reversed by a snap action around a line connecting the upper ends of the two inclined ribs and a corner portion connecting each side wall surface, and the wall surface is bent with the vertical rib 10 as a fold. It will be in the state that was done. The state is the trunk wall 3
The upper wall 12 is also transmitted to the left and right side walls 12c and 12d of the upper body 12 so that the wall is formed by folding the vertical ribs 15 and the corners connecting the side walls are bent around the axis.

Next, both side walls 12c, 1 of the upper body 12
2d lower part is pushed in from both sides, front and rear side walls 12a,
By pressing the 12b surface, the left and right side walls 12c,
The wall surface of 12d is bent with the vertical rib 15 as a fold, and the left and right side walls 13c and 13d of the lower body 13 are pulled inward at the upper ends of the inclined ribs 18, and the wall surfaces of the left and right side walls 13c and 13d of the lower body 13 Is deformed with the inclined rib 18 as a fold.

Next, the front and rear side walls 12a, 12b of the upper trunk portion
Of the left and right side walls 12
When the pressing is continued until the contact of the bent wall surfaces of c and 12d can be maintained, the upper body 12 becomes flat and the flat body 3A is formed as shown in FIG. , 13b are bent with the horizontal rib 14 as an axis. Then, the left and right side walls 13c, 1 of the lower body part
The 3d wall is folded with the inclined ribs 18, the corners connecting the side walls of the lower body 13, and the edges of the bottom wall 4 as folds, and the shape of the side surface is triangular, and the lower body 13 and the bottom wall 4 form a bottle. Is formed.

Next, as shown in FIG. 5, with the deformed bottom portion 4A as the axis of the lateral rib 14, the rear side wall 13 of the lower body portion 13 is formed.
When b is rotated until it becomes substantially the same plane as the side wall 12b of the upper body portion 12, the horizontal ribs 14a and 14b are inclined from the center to the corners on both sides. The right lateral rib 14a and the left lateral rib 14b of the right side wall 13d together with the lateral rib 14b and the lateral rib 14a of the front side wall 13a form a connection end of the lateral rib, that is, a corner connecting the front side wall 13a and the side walls 13c, 13d. Acts in the direction of the axis to maintain the deformed state.

The lateral ribs 14a and 14b of the rear side wall 13b, the lateral rib 14b of the side wall 13c, and the lateral rib 1 of the side wall 13d
4a, the reversing force is removed to restore the rear wall 12b,
The wall surface and the wall surface of the rear side wall 13b of the lower trunk portion operate so as to maintain the same plane. Thus, a flat waste bottle as shown in FIG. 5 is obtained.

In the above-described embodiment, the order of the pressing and the pressing of the upper and lower surfaces is started from the shoulder peripheral wall and moves downward sequentially. However, starting from the lower end of the upper body portion 12 and extending upward sequentially, finally the shoulder peripheral wall is moved. May be pressed to be deformed.

Next, as shown in FIG. 6, the deformed bottom portion 4A of the bottle is bent around the horizontal rib 14, and
Is pressed against the wall surface of the side wall 12a of the flat body 3A to bend the flat body 3A, and the bottom wall 4 is flattened so that the edge 4b extends to near the upper horizontal rib 11. The portion 3A is pressed against the surface of the side wall 12a of the body peripheral wall 3.

Next, when the shoulder peripheral wall 2 is bent with the horizontal rib 11 as an axis, the shoulder peripheral wall 2 is deformed so as to maintain a constant angle with respect to the trunk peripheral wall 3. At this time, when the wall surface of the side wall 2a of the shoulder peripheral wall 2 is brought into contact with the wall surface of the side wall 13b of the lower trunk portion of the deformed bottom 4A, and the shoulder peripheral wall 2 is pressed against the deformed bottom 4A to be crushed, as shown in FIG. Thus, a folded waste bottle as shown in FIG.

In the above-described embodiment, the engagement ridge 5 is engraved on the mouth portion to use a stopper-type cap and an inner plug. However, a screw is engraved on the mouth portion and a screw cap is used. You may do so. In addition, the shape of the corrugated reinforcing panel 16 provided at the center of the surface of each side wall and the shape of the reinforcing rib 17 surrounding the reinforcing panel 16 can be changed as appropriate, and may not be formed in some cases. .

[0028]

Since the present invention is configured as described above, the following effects can be obtained. A V-shaped inclined rib is provided on the shoulder peripheral wall of the bottle, a vertical rib is provided on an upper body of the body peripheral wall, and an inverted V-shaped inclined rib is provided on a lower body of the bottle, and left and right side walls of the shoulder peripheral wall and the body peripheral wall are provided. Is folded inward with the vertical ribs as folds, and then the lower body is bent above the bottle, so that a flat waste bottle consisting of a flat body with a thinner upper body and a deformed bottom is obtained. Can be. Next, because the flat body is folded together with the deformed bottom,
A waste bottle in which the flat body portion and the deformed bottom portion are folded can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view of a bottle of the present invention.

FIG. 2 is a plan view of the bottle.

FIG. 3 is an explanatory view of the bottle at the time of deformation, and is a cross-sectional view taken along line AA of FIG. 1;

FIG. 4 is a left side view for explaining deformation of a trunk peripheral wall.

FIG. 5 is a left side view of the flat waste bottle.

FIG. 6 is a left side view illustrating folding of the flat body.

FIG. 7 is a left side view of the folded waste bottle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mouth cylinder part 2 Shoulder peripheral wall 3 Body peripheral wall 3A Flat trunk part 4 Bottom wall 4A Deformed bottom part 5 Engagement ridge 6 Retaining ring 7 Pyramid part 8 Square cylinder part 9 Inclined rib 10,15 Vertical rib 11,14 Horizontal rib 12 Body 13 Lower body 16 Reinforcement panel 17 Reinforcement rib 18 Inclined rib

Claims (3)

[Claims] 1. A rectangular plastic bottle comprising: a mouth tube portion; a shoulder peripheral wall formed by a pyramid portion and a rectangular tube portion; a rectangular cylindrical body peripheral wall formed by an upper body portion and a lower body portion; and a bottom wall. In the shoulder peripheral wall, two inclined ribs are arranged in a V-shape in a pyramid portion, and a vertical rib continuous to a lower end of the inclined rib is arranged in a rectangular tube portion, and the trunk peripheral wall includes: A vertical rib is arranged in the center of the upper trunk side wall,
Two inclined ribs are arranged on the lower body side wall in an inverted V shape, and the shoulder peripheral wall and the upper body, and the connection between the upper body and the lower body,
A crushable rectangular plastic bottle, characterized in that lateral ribs surrounding a peripheral wall are provided. 2. A square plastic bottle comprising a mouth tube portion, a shoulder peripheral wall comprising a pyramid portion and a rectangular tube portion, a rectangular tubular body peripheral wall comprising an upper trunk portion and a lower trunk portion, and a bottom wall. In the upper body part, by pushing in the center part of the wall surface of the opposed left and right side walls and pressing the front and rear side wall surfaces, the opposed wall surfaces of the left and right side walls are folded inward with the center line as a fold, and then the left and right side walls of the lower body part A flat plastic bottle is formed by forming a flat body portion and a deformed bottom portion to form a flat waste bottle. 3. The square plastic bottle pusher according to claim 2, wherein the deformed bottom portion and the flat body portion are overlapped and folded, and the shoulder peripheral wall is bent so as to press against the deformed bottom portion to form a folded waste bottle. How to crush.