JP2012096846A - Plastic bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottle excellent in decorative properties and light-shielding ability, which can be manufactured stably and efficiently without causing a problem in a ratchet function even when the plastic bottle is subjected to full-shrinking processing.SOLUTION: In a plastic bottle, a ratchet mechanism of a neck of a bottle body is provided at a position spaced apart upward from the lower end of the neck by a predetermined height to keep the upper end of a full-shrinking label positioned between the position and the lower end of the neck, and a skirt is formed at the lower end of a ratchet mechanism of a spouting tool, so that the lower end of the skirt is located at a position, at which the upper end of the full-shrinking label is covered, or below.

Description

  The present invention relates to a plastic bottle that stores liquid, granules, powders, and the like. In particular, the present invention relates to a plastic bottle equipped with a full shrink label using a heat-shrinkable film.

  In recent years, as the shrink label and its processing technology have been improved, so-called full shrink products have been found in which plastic bottles of various shapes are covered with the shrink label.

  The merit of using the full shrink label can be expressed by producing the bottle itself without coloring, and providing all the coloring or printing on the label. Moreover, it is possible to easily provide a visible line through which the contents can be seen by changing the design of the label.

  Furthermore, even if the bottle has an irregular shape, surface patterns and symbols can be expressed only by printing on a label without using a special printing technique such as a pad. Since there is no need to perform printing on the bottle itself, the fact that production can be performed efficiently is also a great advantage of full shrink packaging.

  Furthermore, by providing the label, not the bottle itself, with the function of protecting the contents from external rays such as ultraviolet rays, the label and the bottle are separated and collected for collection and recycling, thereby preventing contamination by ultraviolet absorbers and other resources. It can remove the obstacles of crystallization.

  However, in order to protect the contents, if the shrink label has an external light shielding function, it is necessary to cover all areas of the bottle exposed to the outside with the label. Then, an area that cannot be reliably covered appears.

Typically, in a bottle having a ratchet mechanism for preventing loosening between the cap and the neck of the bottle body in the operation of sealing the cap after filling the contents of the bottle, when a full shrink is applied, There is a risk that the label is applied to a movable part such as a ratchet mechanism of the bottle, and the function of preventing loosening is lowered or the label is cut due to the biting of the label during the operation of sealing the cap.
The case where the ratchet mechanism is provided in the part which contact | connected the shoulder part of the mouth neck part of a bottle main body as an example is demonstrated.

  A bottle composed of a cylindrical pouring tool screwed into the bottle body and its neck and neck and a cap body screwed into the pouring tool. There are bottles in which a number of serrated grooves and saw-toothed projections are provided around the peripheral surface, and the grooves and projections mesh with each other to act as a ratchet mechanism.

When the bottle is sealed, when the cap is twisted in the direction of closing the cap with respect to the mouth and neck, the serrated projection of the dispensing tool engages with the serrated groove of the bottle body, and the ratchet mechanism Therefore, the cap main body can seal the opening of the container while rotating integrally with the pouring tool.

In addition, simply twisting the pouring tool in the direction of opening the cap with respect to the mouth and neck to open the lid, the pouring tool rides on the slope of the serrated projection of the mouth and neck, and the ratchet mechanism is disengaged. Since the pouring tool does not rotate around and rotates, the opening of the bottle does not come off.
Patent documents 1 and patent documents 2 are mentioned as an example of a bottle provided with such a ratchet mechanism.

  When a shrink label is attached to a bottle, a flat tubular shrink label formed by cutting a half-folded tubular film at a predetermined interval is usually put on the bottle in a cylindrical open state. Thereafter, the shrink label placed on the bottle is heated and contracted by heat to be attached to the surface of the bottle.

Therefore, when the shrink label is put on the bottle and the shrink label is not positioned at a predetermined position of the bottle, the shrink label is attached to the bottle with the position shifted.
In addition, the position of the shrink label with respect to the bottle, including the variation in the degree of subsequent heat shrinkage, involves a certain amount of error, and in particular, it is difficult to accurately determine the position of the label end after the heat shrink treatment with respect to the bottle shape. is there.

Hereinafter, problems caused by the fact that the position of the label end cannot be accurately determined in a bottle in which a ratchet mechanism is provided on the bottle neck and neck will be described with reference to the drawings.
FIG. 4 shows a schematic cross-sectional view of a conventional bottle in which a ratchet mechanism is provided in a portion of the bottle body that is in contact with the shoulder of the neck of the bottle body when the cap is sealed without a shrink label attached.

  FIG. 1 shows an example in which a shrink label is partially attached to this bottle, FIG. 2 shows an example in which a full shrink label is attached to this bottle, and FIG. 3 shows another example in which a full shrink label is attached to this bottle. The cross-sectional schematic of each example was shown. For simplification of explanation, only the bottle main body is shown in FIGS.

  The bottle of FIG. 4 includes a bottle main body (1), a screw-type extraction tool (11) screwed to the main body, and a screw-type cap (41) screwed to the extraction tool. At the lower end of the mouth-and-neck part (3) raised from 2), a plurality of teeth (16) arranged at the lower end inside the lower end inner tooth tube (15) of the pouring tool (11) are engaged. A claw wheel-like cylinder (5) having a plurality of claws (4) constituting a ratchet mechanism is provided.

  The pouring tool (11) is formed with a male screw cylinder (12) at the upper part and a female screw cylinder (14) at the lower part with the flange (13) as a boundary, and the lower part of the female screw cylinder (14) is the inner tooth cylinder (15). It has become. It is screwed with the cap (41) by the screw of the male screw cylinder, and is screwed with the mouth neck of the bottle main body (3) by the screw of the female screw cylinder.

  When the shrink label (6) is partially attached to the bottle of FIG. 4, for example, as shown in FIG. 1, areas without labels are formed on the top and bottom of the bottle body (1), so that the bottle has decorative properties. Therefore, if the bottle is required to have light-shielding properties because the contents are easily altered by light, the bottle area without the label must be colored or light-shielded on the necessary part of the bottle body (1). I will have to.

  Even when the full-shrink label (6) is attached to the bottle of FIG. 4, for example, as shown in FIG. 2, if an area where the upper end of the label does not reach is formed at the top of the bottle body (1), the bottle is colored. If you want to do it, or if the content requires light shielding, you have the same problems.

In order to avoid this problem, the bottle shown in FIG. 3 is mounted with the upper end of the region where the full shrink label (6) is mounted completely covered up to the shoulder (2) of the bottle body.
If the full shrink label (6) covers the entire shoulder portion of the bottle body and the state where the bottom end of the pouring tool is exposed can be accurately reproduced, the above-mentioned problem concerning the light shielding property can be solved. For this reason, it is difficult to accurately determine the mounting position of the shrink label. Therefore, even if it tries to align the mounting position of the label up to the height of the lower end of the pouring tool, it is inevitable that it will vary to some extent up and down.

When the upper end of the label (6) mounting position changes in a direction lower than the lower end of the pouring tool, there remains a problem that the light shielding performance becomes incomplete as described in the case of the bottle of FIG.
Conversely, when the upper end of the label (6) mounting position changes in a direction higher than the lower end of the pouring tool, the nail on the outer surface of the claw wheel cylinder (5), which is a ratchet mechanism as shown in FIG. (4) will be covered.

  For this purpose, as shown in FIG. 5, the teeth (16) on the inner surface of the inner tooth tube (15) at the bottom of the pouring tool (11) and the claws on the outer surface of the toothed wheel tube (5) are sealed after the contents are injected. The upper end of the label (6) is bitten between (4) and this causes a decrease in the loosening prevention function and causes the label to run out. FIG. 5 shows a schematic cross-sectional view of an example of a conventional bottle in which a full shrink label is attached to the bottle of FIG.

JP 2004-149198 A JP 2006-240628 A

  In a plastic bottle, a heat-shrinkable film is sometimes shrink-processed on the bottle in order to improve the decorativeness and light shielding property of the bottle. However, since the position of the film end after shrinking varies, even in the case of full shrinking, it is technically difficult to shrink so as to cover only the wall surface of the bottle accurately.

  Especially in bottles where the lower end of the mouth and neck of the bottle body has a movable part that extends around the circumference, such as a ratchet mechanism, in order to improve the decorative and light-shielding properties, shrink the entire bottle with a shrink film. It is necessary to cover the upper end of the film to the boundary where it overlaps with the region covered with the light shielding material such as an opaque cap, in this case, until reaching the lower end of the ratchet mechanism.

  If the upper end of the shrink film is covered with the ratchet mechanism at this time, the shrink film is sandwiched in the ratchet mechanism when the cap is rotated using the ratchet mechanism at the time of sealing, and as a result, the ratchet function is lowered. Or the shrink film may be damaged.

  The present invention solves the above problems and provides a bottle with excellent decorativeness and light-shielding property that can be stably and efficiently produced without causing any defects in the ratchet function even when full shrink processing is performed on a plastic bottle. This is the issue.

The invention according to claim 1 of the present invention is a bottle composed of a bottle main body, a cylindrical screw-type pouring tool screwed to the mouth neck portion thereof, and a screw-type cap screwed to the pouring tool. In addition, a large number of serrated grooves and serrated projections are provided on the outer peripheral surface of the lower part of the neck of the bottle main body and the inner peripheral surface of the pouring tool. In a plastic bottle with a shrink wrap,
A ratchet mechanism for the bottle neck and neck of the bottle body is provided at a position above the lower end of the mouth and neck by a predetermined height, and the upper end of the full shrink label is disposed within this interval. Is a plastic bottle characterized in that a skirt portion is formed and the lower end of the skirt portion is at a height equal to or lower than the position covering the upper end of the full shrink label.

  In the invention according to claim 2 of the present invention, the ratchet mechanism provided on the outer peripheral surface of the lower part of the neck portion of the bottle main body and the inner peripheral surface of the pouring tool is capable of rotating the pouring tool in the screwing direction. The plastic bottle according to claim 1, wherein the plastic bottle is a ratchet mechanism that disables rotation in the upward direction.

  The invention according to claim 3 of the present invention is the plastic according to claim 1 or 2, wherein the distance from the lower end of the ratchet mechanism of the mouth and neck of the bottle body to the lower end of the mouth and neck is in the range of 2 mm to 4 mm. It is a bottle.

  The invention according to claim 4 of the present invention is the plastic bottle according to any one of claims 1 to 3, wherein a scale for measuring the inflowing liquid is provided on the inner surface of the screw-type cap. .

  According to the invention of claim 1 of the present invention, the ratchet mechanism for the bottle body neck and neck is provided at a position above the mouth and neck by a predetermined height, and the upper end of the full shrink label is within this interval. The skirt portion is formed at the lower end of the ratchet mechanism of the pouring tool, and the lower end of the skirt is below the position covering the upper end of the full shrink label. Even if the upper end position of the label varies somewhat, it can be made into a plastic bottle that can protect the contents while maintaining a complete light-shielding property when sealed.

  That is, the ratchet mechanism at the lower end of the mouth neck and the lower part of the mouth neck connected to the shoulder of the bottle body by the ratchet mechanism at the neck and neck of the bottle body being provided at a position above the lower end of the mouth neck by a predetermined height. There is a gap between the lower end of By setting the position of the upper end of the full shrink label after contraction so as to be in the middle of the gap, even if the upper end position slightly deviates, it can be accommodated within the range of the gap.

Furthermore, a skirt portion is formed at the lower end of the ratchet mechanism of the pouring tool, and the lower end of the skirt is not higher than the position covering the upper end of the full shrink label, so that the upper end position of the full shrink label can be accommodated. That is, it is possible to completely cover the upper end of the label that is contracted and adhered to the range of the gap between the lower end of the mouth and neck portion and the lower end of the ratchet mechanism at the lower portion of the mouth and neck portion.
The shape of the skirt part can be selected appropriately from the viewpoint of usability and design as long as the upper end of the label can be completely covered, whether it is a right cylindrical shape or a widened skirt.

  In addition, by placing the upper end of the shrink label in the above gap range, it occurs when the upper end of the shrink film is covered with the ratchet mechanism, the ratchet mechanism is sandwiched in the ratchet mechanism, or the ratchet function is reduced. It is also possible to prevent the occurrence of problems such as film breakage.

In this way, even if the plastic bottle is subjected to full shrink processing, it is possible to obtain a bottle with excellent decorativeness and light shielding properties, which can be stably and efficiently produced without causing any defects in the ratchet function.

  Here, a full shrink label means the shrink label which wraps the whole except for the part specifically covered with the cap of the bottle, and the bottom part. In the present invention, the description is focused on the vicinity of the cap portion for the purpose of securing the light shielding property by the label.

  According to the invention which concerns on Claim 2 of this invention, the ratchet mechanism provided in the outer peripheral surface of the bottle main body neck part lower part and the inner peripheral surface of the extraction tool can rotate the extraction tool in the screwing direction. Since the ratchet mechanism makes it impossible to rotate in the screw-up direction, it is possible to reliably attach the pouring tool to the bottle body and reliably prevent the pouring tool from coming off the bottle body.

According to the invention of claim 3 of the present invention, the distance from the lower end of the ratchet mechanism of the bottle body mouth / neck to the lower end of the mouth / neck is in the range of 2 mm to 4 mm. Even if it fluctuates, it can fit in the above gap.
Usually, the variation in the position is within 2 mm, and if the allowable range is less than that, there is a high possibility that the position of the upper end is displaced from the gap.
If the gap is unnecessarily large, not only is the design surface or material cost disadvantageous, but also the height of the skirt portion at the lower end of the ratchet mechanism of the corresponding pouring tool has to be proportionally increased.

According to the invention according to claim 4 of the present invention, the scale for measuring the inflowing liquid is attached to the inner surface of the screw-type cap, thereby accurately measuring when the screw-type cap is used as the measuring cup. I can do it.
Of course, in bottles used for full-shrink label packaging that requires light-shielding properties on the outer surface of the container, the cap is often opaque. By providing a scale for measurement on the inner surface of the cap, even an opaque cap can be easily measured from the liquid surface side because it is easily visible.

It is the cross-sectional schematic of an example which attached the shrink label partially to the conventional bottle. It is the cross-sectional schematic of an example which attached the full shrink label to the conventional bottle. It is the cross-sectional schematic of another example which attached the full shrink label to the conventional bottle. It is a cross-sectional schematic diagram of a conventional bottle without a shrink label shown in a cap fitting state. It is a section schematic diagram of an example of the conventional bottle which equipped with the full shrink label. 1 is a schematic cross-sectional view of an example of the bottle of the present invention equipped with a full shrink label. 2 is a schematic cross-sectional view of an example of the bottle of the present invention without a full shrink label. It is a cross-sectional schematic diagram of another example of the bottle of the present invention to which a full shrink label is not attached.

Hereinafter, examples of embodiments of the plastic bottle of the present invention will be described with reference to the drawings as necessary.
6 is a schematic cross-sectional view of an example of the bottle of the present invention in which a full shrink label is attached to the bottle shown in FIG. FIG. 7 is a schematic cross-sectional view of an example of the bottle of the present invention without a full shrink label. FIG. 8 is a schematic cross-sectional view of another example of the bottle of the present invention without a full shrink label.
Here, first, the bottle of the present invention of the embodiment shown in FIG. 6 will be described.

The plastic bottle of the present invention is a bottle constituted by a bottle main body and a cylindrical screw type extraction tool screwed to the mouth and neck portion thereof, and a screw type cap screwed to the extraction tool, A large number of serrated grooves and serrated protrusions are provided on the outer peripheral surface of the lower part of the neck of the bottle main body and the inner peripheral surface of the pouring tool, and the grooves and the protrusions mesh with each other to act as a ratchet mechanism. A plastic bottle with shrink wrapping.

Shrink wrapping is performed by placing a shrink label on a bottle and passing it through, for example, a tunnel equipped with a heat source such as infrared rays, and causing the label to adhere to the bottle along the shape of the bottle surface by shrinking the label.
As a material of the film used for the shrink label, a stretched film having a property of shrinking when heated, such as a polystyrene resin film, a polyester resin film, a polypropylene resin film, a polyvinyl chloride resin film, or the like is used.

As a bottle packaging method using a shrink label, for example, there is known a method in which a tubular or bag-like film is primarily packaged with a little margin and then the film is shrunk to the outer peripheral surface of the container by hot air, steam, or the like. It has been.
In addition, the film is wrapped in a certain degree of tension, the end of the film is folded into the bottom of the container, and the folded portion is primarily packaged by self-adhesion between the films or by heat-sealing, and is then subjected to a shrink treatment to prevent the film from loosening. A method such as stretch shrink for removing wrinkles is known.

  Since shrink wrapping can fit containers of any shape such as a square shape, a round shape, a gourd shape, etc., a wide selection of container shapes can be taken. Further, since the shrink label and the bottle main body are not directly bonded to each other, the bottle can be completely separated from the bottle when discarded. For this reason, from the viewpoint of recycling, the demand for shrink labels that can be separated from containers is expected to increase further in the future.

As shrink wrapping, the shrink labels that have been printed to add a colorless shrink film and the function of displaying the product name, manufacturer name, contents, and design to the entire surface or the sealed part of these containers. It is also done to wrap the container.
Moreover, in order to block the contents which need light-shielding properties, such as beer, from external light, the whole container is packaged by the shrink label which added the light-shielding function by using a colored shrink film (full shrink). Things are also done.

  Examples of techniques for imparting light-shielding properties to the shrink film include a method of laminating a thin film layer of metal (aluminum, etc.) on the shrink film, a method of laminating a white ink layer containing an aluminum paste on the shrink film, and an ultraviolet absorber. Various methods such as a method of laminating a light-shielding pressure-sensitive adhesive containing titanium oxide on a shrink film can be used.

  The bottle body (1) is made of thermoplastic resin such as polyolefin resin formed by blow molding or the like, and has a hollow portion for storing contents such as liquid inside, and is provided at the upper opening used for taking in and out the contents. The mouth-and-neck part (3) provided with the external thread for screwing out the pouring tool is connected in an upright state from the upper end of the body part of the bottle body through the shoulder part (2).

  Although it is possible to color the bottle body by adding a colorant to the resin during molding of the bottle, or to print on the surface of the bottle body by a special method such as pad printing, the plastic bottle of the present invention It is possible to achieve the object by packaging with a shrink film having a similar function without using such processing on the bottle body.

A large number of serrated grooves and serrated projections are provided on the outer peripheral surface of the lower portion of the bottle body neck and neck (3) and the inner peripheral surface of the pouring tool (11). As a structure.
The mouth neck portion (3) can be usually produced by molding a thermoplastic resin such as polyolefin resin by a method such as injection molding, and is preferably opaque or colored.

In the figure, a pinwheel-like cylinder (5) having a plurality of claws (4) on the outer periphery is formed at the lower part of the mouth-and-neck (3), and an extraction tool (11) is screwed into the mouth-and-neck part 3 to internal teeth (15) is fitted to the outer surface of the claw wheel-shaped cylinder (5), and the lower end inner tooth cylinder (11) of the extraction tool (11) with respect to the claw (4) of the claw wheel-shaped cylinder in the screwing direction by the ratchet mechanism. 15) The plurality of teeth (16) on the inner surface can be slid and tightened, and after the completion of tightening, the tooth (16) engages with the claw (4) so that the inner tooth cylinder (15) can be rotated in the loosening direction. The ratchet mechanism which makes a movement impossible was illustrated.
The structure of the ratchet mechanism may be a structure in which the nails on the extraction tool side and the teeth on the mouth and neck side are reversed, that is, the nails are arranged on the extraction tool side and the teeth are arranged on the mouth and neck side, and selectively in one direction Any known method may be used as long as the rotation is restricted.

  In the plastic bottle of the present invention, the plurality of claws (4), which are the ratchet mechanism at the lower part of the mouth / neck portion (3), are provided at a predetermined height above the lower end of the mouth / neck portion. A cylinder with a predetermined height (h) is extended to the lower end. The upper end of the full shrink label (6) is disposed in the range (h) of the height interval of the mouth and neck (3) of the bottle body (1), and the ratchet mechanism of the pouring tool (11) The outer side is covered with a skirt portion extending downward from the lower end of the inner tooth cylinder (15) having a plurality of teeth (16) on the inner side, so that the shrink label is not caught in the ratchet mechanism, and the light shielding property of the bottle Is secured.

  A cylindrical screw-type extraction tool screwed into the mouth-neck portion (3) of the bottle body (1) is a male screw for engaging the screw-type cap (41) with the flange (13) as a boundary. The lower part of the male screw cylinder (12) having a screw on its outer surface is a female screw cylinder (14) having a female screw on its inner surface for screwing with a male screw on the outer surface of the mouth and neck (3). The inner surface of 12) branches inward from the position of the flange (13) and descends into a cylindrical shape so as to be in watertight contact with the upper end surface of the mouth and neck (3).

  Further, an inner tooth cylinder (15) having a plurality of teeth (16) as the ratchet mechanism inside is provided at the lower part of the pouring tool (11), and a cylindrical skirt portion is provided at the lower part of the ratchet mechanism. (8) is formed to improve the light shielding property.

  It is desirable that the lower end of the skirt portion (8) formed at the lower end portion of the ratchet mechanism of the pouring tool (11) is not higher than a position covering the upper end of the full shrink label. Furthermore, in order to completely secure the light shielding property, it is desirable that the lower end of the skirt portion has a dimension that is the same height as the lower end of the mouth and neck when the pouring tool (11) is screwed down.

A screw-type cap (41) that is screwed into the pouring tool (11) has a top surface that is continuous with the peripheral wall (42) and a female screw that is screwed into the inner surface of the lower surface of the pouring tool (12) on the inner surface. The inner wall is formed with an inner wall extending downward from the inner surface of the peripheral wall (42) with the flange (43) as a boundary. The cap (41) can be usually produced by molding a thermoplastic resin such as a polyolefin resin by a method such as injection molding, and is preferably opaque or colored.
By providing a scale for measuring on the inner surface of the screw-type cap (41), the liquid can be easily measured even with an opaque cap.

In the example of the bottle of the present invention in which a full shrink label is attached to the bottle shown in FIG. 6, an extraction tool skirt (7) and an extraction tool skirt (7) extending from the lower part of the extraction tool (11) are compared to the conventional bottle. Part 8) is increasing.
If these extensions allow the upper end of the full-shrink label (6) to contract in the upper and lower areas of the mouth-neck lower extension (7), the upper end of the label will be extended by the extended pouring tool skirt (8). Can be completely covered.

By setting the shrink label mounting condition so that the upper end of the label is approximately at the center in the height direction of the lower neck and neck extension (7), even if the position of the upper end of the label varies slightly, it is covered by the spout skirt (8). It can fit within the range.
The variation in the position of the upper end of the label is usually about 2 mm, so the height of the lower extension of the mouth and neck is preferably a corresponding height, but it varies depending on the size and dimensions of the bottle and the label mounting conditions. It is necessary to decide in consideration.

The plastic bottle of the present invention can be produced by the same molding process and filling and sealing process as those of a normal bottle with a ratchet mechanism.
Even if the upper end position of the label slightly varies during the heat shrinkage in the full shrink label mounting process, the upper end position after the shrinkage of the full shrink label is set to be in the middle of the gap at the lower end of the bottle mouth and neck, and the skirt Since the lower end of the portion is not higher than the position covering the upper end of the full shrink label, a plastic bottle that can protect the contents while maintaining a complete light-shielding property when sealed can be obtained.
In addition, by placing the upper end of the shrink label within the range of the gap, it is possible to prevent the occurrence of problems caused by sandwiching the shrink film in the ratchet mechanism.

In this way, even if the plastic bottle is subjected to full shrink processing, it is possible to obtain a bottle with excellent decorativeness and light shielding properties, which can be stably and efficiently produced without causing any defects in the ratchet function.
Thereby, it is possible to contribute to the improvement of productivity by improving the yield during shrink processing.

  The shrink structure of the present invention can be incorporated not only in a plastic bottle provided with a ratchet mechanism but also in a transparent container made of another material without a lid loosening prevention mechanism for the purpose of improving the light shielding property.

DESCRIPTION OF SYMBOLS 1 ... Bottle main body 2 ... Shoulder part 3 ... Mouth and neck part 4 ... Claw 5 ... Nail wheel-shaped cylinder 6 ... Shrink label 7 ... Lower part of the mouth and neck part 8 ... Pouring tool skirt 11 ... Screw type pouring tool 12 ... Male screw Tube 13 ... Flange 14 ... Female screw tube 15 ... Internal tooth tube 16 ... Teeth 41 ... Screw-type cap 42 ... Peripheral wall 43 ... Flange 44 ... Female screw tube h ... Lower extension of the neck and neck

Claims (4)

A bottle comprising a bottle main body and a cylindrical screw-type extraction tool screwed to the mouth-neck portion, and a screw-type cap screwed to the extraction tool,
A large number of serrated grooves and serrated protrusions are provided on the outer peripheral surface of the lower part of the neck of the bottle main body and the inner peripheral surface of the pouring tool, and the grooves and the protrusions mesh with each other to act as a ratchet mechanism. In a plastic bottle with shrink wrap,
The ratchet mechanism of the bottle neck and neck of the bottle body is provided at a position above a predetermined height from the lower end of the mouth and neck, and the upper end of the full shrink label is disposed within this interval.
A plastic bottle characterized in that a skirt portion is formed at the lower end portion of the ratchet mechanism of the pouring tool, and the lower end of the skirt portion is not higher than a position covering the upper end of the full shrink label.   The ratchet mechanism provided on the outer peripheral surface of the lower part of the neck of the bottle body neck and the inner peripheral surface of the pouring tool allows the pouring tool to rotate in the screwing direction but not in the screwing direction. The plastic bottle according to claim 1, wherein the plastic bottle is a mechanism.   3. The plastic bottle according to claim 1, wherein the distance from the lower end of the ratchet mechanism of the bottle main body neck to the lower end of the mouth and neck is in the range of 2 mm to 4 mm.   The plastic bottle according to any one of claims 1 to 3, wherein a scale for measuring an inflowing liquid is provided on an inner surface of the screw-type cap.

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