JP2000043872A - Synthetic resin thin-walled container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To demonstrate the display function stably for a long period of time and not limit the tendency of making a container body of thinner wall by utilizing a label and displaying the synthetic resin thin-walled container in the state of being recognized clearly regardless of the degree of actual thinness of the wall of the container body. SOLUTION: An interior label 5 press contacting the surface 6 with a display 7 formed on the inner peripheral face of a trunk 2 of a container body 1 by utilizing the elasticity of the label is set in the winding shape all over the total periphery of the inner peripheral face of the trunk 2 of the container body 1, and the display 7 is applied properly without generating incorrect deformation on the trunk 2, and the inner label 5 is functioned as a reinforcing member of the trunk 2 to make easily the wall of the container body 1 thinner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin thin-walled container which is formed sufficiently thin in order to save resources and simplify disposal.

[0002]

2. Description of the Related Art As a container for refilling various liquid contents, a bottle is formed by a stretch blow molding means or the like in which a body thickness is reduced to about 0.2 mm in order to save resources and simplify disposal processing. 2. Description of the Related Art Thin-walled containers made of a synthetic resin formed in a body shape are frequently used.

In this thin container, the thickness of the entire body, which is the main portion, is sufficiently thin, so that the consumption of a synthetic resin material for molding one container is as small as 12.5 g (about 510 ml in capacity). As a result, the resource saving of the synthetic resin material can be greatly reduced, the production cost of the container can be greatly reduced, and the thickness of the body is reduced by the sufficiently small thickness of the body as the main part. The stiffness is greatly reduced, which makes it easier to crush the used container and makes disposal of the container easier.

[0004] Further, since the structure is basically the same as that of a conventional blow-molded container or stretch blow-molded container, the conventional stretch blow-molding technology (particularly, biaxial stretch blow-molding technology) is used as it is. Simple and suitable molding can be achieved simply by increasing the amount of stretching or reducing the size and thickness of the preform stretch-molded into the container.

[0005] In this thin container made of synthetic resin, the display of the product name, company name, quality description, and the like is based on the fact that the rigidity of the body is small, and in order to reinforce the small rigidity of the body as much as possible, Because many irregularities are formed in the part,
It is difficult to apply directly by printing on the outer surface of the body or by attaching a label on which a display is printed. For this reason, in many cases, a shrink label using a heat-shrinkable film is used.

[0006]

However, in the above-mentioned prior art, if the amount of the synthetic resin material required for molding one container is reduced in order to further save resources, the amount of the container is reduced accordingly. Since the body is thinned and the rigidity of the body is reduced, the body is deformed by the shrinkage force of the shrink label and the heat generated during shrink molding of the shrink label, thereby reducing the capacity of the container. The appearance of the product becomes worse due to changes, wrinkles and distortion,
There was a problem.

Further, even if the mounting of the shrink label on the container body is achieved, the deformation of the body during gripping and handling (particularly when the container is in an open state) is large. There is a problem that displacement in the direction in which the label and the label are detached from each other is likely to occur, so that a stable attachment of the shrink label to the container body cannot be obtained.

Further, since both the container body and the shrink label are highly flexible, and the shrink label is provided on the body only by the tightening force, even when the liquid content is sealed and stored. , Gripping becomes unstable due to slippage due to bending deformation, which makes it difficult to handle smoothly, and during use, the shrink label and the container body slip and the container body falls off. There is a problem that inconvenience during handling is likely to occur.

In view of the above, the present invention has been made in order to solve the above-mentioned problems in the prior art, and a label on a thin synthetic resin container is displayed using a label regardless of the thickness of the container body. It is an object of the present invention to provide a display device in a state where it can be clearly identified, so that the display function can be stably exhibited for a long period of time, and further thinning of the container body can be achieved without any trouble.

[0010]

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 made of a transparent synthetic resin in the form of a bottle which is stretch blow-molded to a sufficiently small thickness. Having a container body, having an interior label which is provided on the outer surface of the container body and has a label on the outer surface thereof and which is rounded into a cylindrical shape, the inner label is provided at least around the inner peripheral surface of the body portion of the container body. And a resilience, which is a shape restoring force in a developing direction, that brings the surface into press contact with the inner peripheral surface of the body of the container body.

[0011] The interior label is inserted into the body from the mouth of the container body in a state where the display surface is directed outward and the interior label is forcibly rolled into a small-diameter cylindrical shape and held in a wound posture. When the holding of the winding posture is released, the diameter is expanded and deformed in the developing direction by its own elasticity.

The elasticity of the interior label is such that the surface on which the indication is given is pressed against the inner peripheral surface of the body of the container body, and the width of the interior label is at least the width of the container body. Since it has a length substantially equal to the circumference of the inner circumferential surface of the body, the interior label that has been expanded and deformed in the body of the container body is
The surface is brought into pressure contact with the entire periphery of the inner peripheral surface of the body, whereby the interior can be stably assembled to the body of the container body.

As described above, the interior label is stably attached to the body of the container body in a state where the display surface is pressed against the inner peripheral surface of the body, so that the display is transparent. It can be clearly seen through the wall of the body, and this state is stably maintained because the interior label is embedded in the container body.

Further, the assembling of the inner label to the container main body is achieved and maintained by the elasticity of the inner label itself in the radial direction, that is, the outward force with respect to the body of the container main body. The thickness of the body does not affect the assembling, and therefore the thickness of the container body is not suppressed at all in order to achieve the assembling of the interior label to the container body.

[0015] The interior label is fitted into the body of the container body in a tubular state in which the surface is pressed into contact with the inner peripheral surface of the body of the container body. The elasticity of the interior label acts as a drag against the gripping force acting on the container, thereby making it possible to increase the rigidity of the container body.

According to a second aspect of the present invention, in the first aspect of the present invention, the interior label has a rigidity that exhibits a greater self-shape holding ability than the body of the container body in a tubular state. It was added.

According to the second aspect of the present invention, the rigidity as a resistance to the gripping force acting on the container body can be set mainly by the interior label regardless of the thinness of the container body. Even if the body of the container body is greatly reduced in rigidity due to the promotion of thinning of the container body and the handling becomes insufficient, the interior label can compensate for the lack of rigidity of the body of the container body. Not only can you
The rigidity of the container body can be easily increased to the extent that trouble-free handling can be obtained without adversely affecting the container function of the container body.

According to a third aspect of the present invention, in addition to the first aspect, the height of the interior label is set to be substantially equal to the height of the body of the container body.

According to the third aspect of the present invention, the interior label has its lower edge abutted on the bottom of the container body, and its upper edge connected to the upper end of the body portion of the container body in a reduced diameter standing and continuous manner. The interior of the container body is attached to the body of the container body while being abutted against the shoulder portion, so that the attachment of the interior label to the body portion of the container body is maintained substantially constant and immovable.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The container body 1 is provided with a cylindrical mouth 4 having a thread formed on the outer peripheral surface thereof at an upper end of a cylindrical body 2 having a bottom through a shoulder 3 having a truncated cone shape having a diameter reduced upward. The body 2 is formed upright and continuous, and is formed to be thin by biaxial stretch blow molding means. However, although not shown, the body 2 is formed with fine irregularities for imparting rigidity. .

As the synthetic resin material for molding the container body 1, a material such as polypropylene or polyethylene terephthalate can be used. For example, polypropylene has a total height of 205.8 mm, a maximum body diameter of 66.1 mm, and The container body 1 having an inner volume of 510 ml is biaxially stretch blow-molded. At this time, the average thickness of the body 2 is adjusted to 0.1 to 0.06 mm by adjusting the thickness and the amount of stretching of the preform as a primary molded product.
, The amount of polypropylene required for molding the container body 1 could be made as extremely small as 6.0 g.

The interior label 5 has a rectangular sheet structure having a width slightly longer than the inner peripheral surface length of the body 2 and a height equal to the height of the body 2, and is provided inside the container body 1. A desired display 7 is given in advance to the outer surface 6 when the outer surface 6 is deformed into the winding posture contained in the torso 2, and the inner surface is applied to the torso 2. It has the resilience to press and contact, and has such a rigidity that it can hold the winding posture in which the surface 6 is brought into contact with the inner peripheral surface of the body 2 by itself, and it goes without saying that, of course, It has sufficient content liquid resistance and has no adverse effect on the content liquid.

When the interior label 5 is attached to the container body 1, the interior label 5 is placed in a lateral direction with the surface 6 on which the display 7 is applied to the outside, and a cylinder having an outer diameter smaller than the mouth 4 is used. In a state where this winding posture is restrained, the container is inserted into the container main body 1 through the mouth portion 4, and the lower end edge of the interior label 5 in the winding posture contacts the bottom of the body portion 2. Remove the restraining force of the winding position at the position.

When the restraining force is removed, the inner label 5 is deformed by its own elasticity so as to expand and deform in the developing direction, and as shown in FIG. 6 is brought into pressure contact with the entire inner surface of the body 2 to assemble the container body 1.

In this interior assembled state, the upper edge 8 of the interior label 5 whose lower edge is in contact with the bottom of the body 2
Is opposed to the shoulder portion 3 whose diameter has been reduced upward, and cannot be displaced upwardly, whereby the assembled position in the container body 1 is self-held.

Since the interior label 5 is not fixed to the inner surface of the body 2, when the container body 1 is gripped and the body 2 is locally depressed and deformed, the body 2 is depressed. The surface 6 of the interior label 5 located around the bending deformation rises from the inner surface of the body 2, but according to many experiments, when the content liquid is transparent, the body 2 Up to a height of about 2 mm from the inner surface, there is no problem in reading and identifying the bar code in the display 7. Recognition of the other displays 7 does not hurt even if the height is 2 mm or more. I never did.

When the display 7 is identified, it is usual to hold the side of the container with the display 7 portion to be identified facing the front, and the display 7 portion to be identified is located. Since the torso 2 portion is not pressed with the fingertip, it can be considered that the display 7 to be identified does not rise more than 2 mm from the inner surface of the torso 2.

When the body 2 of the container body 1 is formed in a rectangular cylindrical shape, and the interior label 5 is to be brought into substantially contact with the entire inner peripheral surface of the body 2, the interior label 5 must be attached to the body in advance. 2 may be formed by bending the portion facing the corner of the body 2 with a radius of curvature slightly larger than the radius of curvature of the corner of the body 2. If the number is large, the degree of the rise of the interior label 5 at the corner is small, so even if the interior label 5 is not bent,
There is no trouble in identifying the display 7 of the interior label 5.

[0029]

Since the present invention has the above-described structure, the following effects can be obtained. The interior label is pressed against the inner surface of the transparent body of the container body by pressing the surface on which the label is applied, so that the interior label is housed inside the body of the container body, so it is damaged or distorted by contact with other substances. A good display state is stably maintained over a long period of time without being discolored or soiled, and the assembled posture with respect to the container body is not displaced so as not to be displayed.

Since the interior label is attached to the cylindrical thin body of the container body with an outward force applied thereto,
With this assembling force, the trunk portion is not deformed irregularly, and the desired display can be safely and appropriately performed on the thin container.

The interior label is attached to the body only by its own elasticity without the need for supporting force from the thin body of the container body. Is not affected, and the thickness of the container body can be further reduced.

Since the interior label is elastically mounted on the body of the container body, it can exhibit a function of reinforcing the rigidity of the body against the gripping force, thereby facilitating the handling of the container. Can be increased.

According to the second aspect of the present invention, since the interior label can function not only as a display but also as a reinforcing function member of the container main body, the lack of rigidity of the body of the container main body due to thinning can be compensated. Thus, it is possible to prevent the deterioration of the handleability due to the thinning of the container body.

According to the third aspect of the present invention, it is possible to further stabilize the assembling posture of the interior label with respect to the container main body, thereby maintaining a good display state for a long period of time.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Container main body 2; Body 3; Shoulder 4; Mouth 5; Interior label 6; Surface 7; Display 8;

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E033 AA02 BA15 BA16 DB01 DD01 DE20 FA03 GA02 3E062 AA09 AB01 AC02 DA02 DA07 KA04 KB03

Claims (3)

[Claims] 1. A bottle-shaped transparent synthetic resin container body (1) formed sufficiently thin and a body (2) of the container body (1).
And an interior label (5), which is provided with a display (7) on the outer surface (6) and is rounded into a cylindrical shape.
(5) has a width that is at least substantially equal to the circumference of the inner peripheral surface of the trunk (2), and presses the surface (7) against the inner peripheral surface of the trunk (2) to restore the shape in the developing direction. And a thin container made of synthetic resin having elasticity as a force. 2. The interior label (5) has a rigidity to exhibit a self-shape holding ability larger than that of the body (2) of the container body (1) in a tubular state. A thin container made of the synthetic resin described in the above. 3. The thin synthetic resin container according to claim 1, wherein the height of the interior label (5) is set substantially equal to the height of the body (2).