Plastic bottle

Abstract

To provide a plastic bottle that allows for easy removal of labels such as shrink labels and roll labels from the bottle.SOLUTION: The plastic bottle includes: a mouth; a shoulder that continues from the mouth; a body that continues from the shoulder; and a bottom that continues from the body. There are recesses or protrusions formed at the boundary between the shoulder and body, as well as on at least one of the body or bottom, and these recesses or protrusions have a depth or height that can create a gap between part of the edge of a label attached to the plastic bottle and the bottle itself when the label is applied overlapping the recesses or protrusions.SELECTED DRAWING: Figure 1A

Description

[Technical field]

[0001] The present invention relates to a plastic bottle. [Background technology]

[0002] Resin bottles, such as polyethylene terephthalate (PET) bottles, are widely used as bottles for beverages such as soft drinks, carbonated drinks, etc. In such bottles, for the purpose of displaying or decorating the product name, contents, etc., a cylindrical label (shrink label) made of a heat-shrinkable resin film on which such information is printed is attached to the body of the bottle, or a roll label is wrapped around the body of the bottle.

[0003] For such bottles, two easily breakable tear lines (perforation lines) are formed on the shrink label along the bottle axis, or a peel-off opening is formed on the roll label, so that the shrink label and the bottle can be separated and discarded. For shrink labels, the label can be easily peeled off from the bottle body by tearing the tear strip formed by the two tear lines (perforation lines) along the tear lines (perforation lines). For roll labels, the label can be easily peeled off from the bottle body by pinching and pulling the peel-off opening with fingers. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4017153 Summary of the Invention [Problem to be solved by the invention]

[0005] However, because shrink labels and roll labels are in close contact with the bottle body, there is no gap between the label and the bottle body large enough to hook a fingertip over the edge of the tear strip or to pinch the peel-off opening with fingers, making it cumbersome and difficult to peel the label off the bottle body.

[0006] In view of the above problems, an object of the present invention is to provide a plastic bottle that allows labels, such as shrink labels and roll labels, to be easily peeled off from the bottle. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a plastic bottle having a mouth, a shoulder portion continuous with the mouth, a body portion continuous with the shoulder, and a bottom portion continuous with the body portion, wherein a recess or protrusion is formed in at least one of the boundary between the shoulder and the body portion, the body portion and the bottom portion, and the recess or protrusion has a depth or height that allows a gap to be formed between a part of the edge of the label and the plastic bottle when a label is attached to the plastic bottle by overlapping the recess or protrusion. Effect of the Invention

[0008] According to the present invention, it is possible to provide a plastic bottle from which a label such as a shrink label or a roll label can be easily peeled off. [Brief description of the drawings]

[0009] [Figure 1A] FIG. 1A is a side view showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Figure 1B] FIG. 1B is a side view showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1A, showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line BB in FIG. 1B, showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Diagram 5] FIG. 5 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 6A] FIG. 6A is a side view showing a schematic configuration of an example of an embodiment in which a label is attached to the plastic bottle shown in FIG. 1A. [Figure 6B] FIG. 6B is a side view showing a schematic configuration of an example of an embodiment in which a label is attached to the plastic bottle shown in FIG. 1B. [Figure 7] FIG. 7 is a cross-sectional view taken along line CC in FIG. 6A, showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view taken along line DD in FIG. 6B, showing a schematic configuration of a plastic bottle according to an embodiment of the present invention. [Figure 9A] FIG. 9A is a side view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 9B] FIG. 9B is a side view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 13] FIG. 13 is a cross-sectional view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 14] FIG. 14 is a bottom view showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. [Figure 15] FIG. 15 is a cross-sectional view taken along line EE in FIG. 14, showing a schematic configuration of another aspect of a plastic bottle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The plastic bottle of aspect 1 of the present invention comprises a mouth, a shoulder portion continuous with the mouth, a body portion continuous with the shoulder, and a bottom portion continuous with the body portion, and is characterized in that a recess or protrusion is formed at the boundary between the shoulder and the body portion, the body portion, and / or the bottom portion, and the recess or protrusion has a depth or height that allows a gap to be formed between a part of the edge of the label and the plastic bottle when a label is attached to the plastic bottle by overlapping the recess or protrusion.

[0011] A plastic bottle according to aspect 2 of the present invention is characterized in that, in the above-mentioned aspect 1, the edge of the label includes an upper edge that is located on the mouth side and a lower edge that is located on the bottom side when the label is attached to the plastic bottle, and the recess or protrusion is formed at the boundary between the shoulder and the body, or on the body, so that the upper edge of the label overlaps with the recess or protrusion when the label is attached to the plastic bottle.

[0012] A plastic bottle according to a third aspect of the present invention is characterized in that, in the above-mentioned second aspect, one of the recessed or protruding portions is formed at the boundary between the shoulder portion and the body portion.

[0013] A plastic bottle according to a fourth aspect of the present invention is characterized in that, in the above-mentioned second aspect, a plurality of the recesses or protrusions are formed at the boundary between the shoulder portion and the body portion, or on the body portion, at substantially equal intervals in the circumferential direction of the plastic bottle.

[0014] A plastic bottle according to a fifth aspect of the present invention is characterized in that, in the above-mentioned first aspect, the bottom is formed with a plurality of convex portions protruding in the axial direction of the plastic bottle and a plurality of concave portions located between adjacent convex portions in the circumferential direction, and the convex portions have a bottom surface and a side surface substantially parallel to the axial direction.

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Figures 1A and 1B are side views showing the schematic configuration of a plastic bottle according to this embodiment, Figure 2 is an end view taken along line AA in Figure 1A showing the schematic configuration of a plastic bottle according to this embodiment, and Figure 3 is an end view taken along line BB in Figure 1B showing the schematic configuration of a plastic bottle according to this embodiment.

[0016] A plastic bottle 1 according to this embodiment includes a plastic bottle body 2 having a mouth 21 to which a cap (not shown) can be detachably attached, a shoulder 22 continuous with the mouth 21, a body 23 continuous with the shoulder 22, and a bottom 24 continuous with the body 23 and located at the bottom (see Figs. 1A and 1B). In this embodiment, a plastic bottle 1 used for filling beverages will be described as an example, but the use of the plastic bottle 1 is not limited to this.

[0017] Examples of beverages that can be filled into the plastic bottle 1 of this embodiment include alcoholic beverages such as brewed alcohol (e.g., fruit liqueurs such as sake and wine, and liqueurs such as plum wine), distilled alcohol (e.g., whiskey, shochu, brandy, etc.), and sparkling beverages containing grain hydrolysates; and soft drinks such as mineral water, tea beverages (e.g., green tea, black tea, oolong tea, blended tea, etc.), vegetable beverages (e.g., tomato juice, carrot juice, tomato mixed juice, carrot mixed juice, etc.), fruit beverages (e.g., apple juice, orange juice, beverages containing fruit juice, etc.), fruit and vegetable mixed juices, coffee beverages, grain milks (e.g., soy milk, rice milk, coconut milk, almond milk, etc.), and vinegar beverages (e.g., fruit vinegar beverages, etc.).

[0018] The "cereal hydrolysate-containing sparkling beverage" in this embodiment is not particularly limited as long as it is a sparkling beverage containing a cereal hydrolysate, but preferably includes beverages containing malt and barley hydrolysates. In this embodiment, the "cereal" is not particularly limited as long as it is a grain, and examples thereof include barley, wheat, soybeans, peas, etc., and preferably includes barley. Specific examples of the cereal hydrolysate include hydrolysates of malt, barley, wheat, soybeans, peas, and corn, and examples thereof include soy protein, soy peptide, pea protein, and corn protein hydrolysate.

[0019] A specific example of the "cereal hydrolyzate-containing sparkling beverage" in this embodiment is preferably a malt hydrolyzate-containing sparkling beverage, more preferably a beer-based beverage. A beer-based beverage generally means a beverage having a beer-specific taste and aroma obtained when beer is produced (when beer is produced based on fermentation by yeast or the like), and examples thereof include fermented malt beverages such as beer, happoshu, and liqueur, other brewed alcoholic beverages, and non-fermented malt beverages such as completely non-alcoholic malt beverages (non-alcoholic malt beverages). In addition, beer-based beverages may be not only malt beverages, but also non-wheat beverages that do not use wheat or malt. Examples of such non-wheat beverages include beer-like sparkling alcohol-containing beverages using peas, soybeans, corn, etc., and completely non-alcoholic beverages.

[0020] The plastic bottle body 2 in this embodiment is made of a resin material such as a polyester resin such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, or polytrimethylene naphthalate, a polyolefin resin such as polyethylene or polypropylene, a polycarbonate resin, or a polyacrylate resin. The capacity of the plastic bottle body 2 is, for example, 180 to 3000 mL. The weight of the plastic bottle body 2 is, for example, 40 to 120 g, and preferably 40 to 70 g.

[0021] Mouth portion 21 is substantially cylindrical, and a screw thread 211 for attaching a cap (not shown) is formed on the side of the open end of mouth portion 21. This allows plastic bottle 1 to be sealed by attaching the cap to mouth portion 21 after filling plastic bottle 1 with beverage.

[0022] The body 23, which occupies the majority of the plastic bottle body 2 in the vertical direction (the direction perpendicular to the horizontal surface when the plastic bottle body 2 is placed on the horizontal surface with the mouth 21 positioned upward), may have a substantially circular or substantially square cross section along the circumferential direction of the body 23. The substantially circular shape is intended to include a perfect circle, an ellipse, an oval, and the like. The substantially square shape is intended to include a rectangular shape, a square shape, and the like, as well as a rectangular shape or square shape with rounded corners, a rectangular shape or square shape with notched corners, and the like.

[0023] Body 23 may have approximately the same diameter along the vertical direction of plastic bottle 1 (the direction perpendicular to the horizontal plane when bottom 24 of plastic bottle 1 is placed on the horizontal plane (the axial direction of plastic bottle 1)). Body 23 may have a shape that is slightly curved inward of plastic bottle main body 2 (a shape having a waist) between shoulder 22 and bottom 24 (for example, approximately at the center position of body 23 in the vertical direction).

[0024] In the plastic bottle 1 according to this embodiment, a recess 31 or a protrusion 32 is formed so as to straddle the boundary 25 between the shoulder portion 22 and the body portion 23 (see Figs. 1A and 1B). When the shape of the body portion 23 of the plastic bottle 1 according to this embodiment is a substantially rectangular shape in cross section, the boundary 25 between the shoulder portion 22 and the body portion 23 includes a corner portion 251 and a flat portion 252 (see Figs. 2 to 5). In an embodiment in which the recess 31 or the protrusion 32 is formed at the boundary 25 between the shoulder portion 22 and the body portion 23, the recess 31 or the protrusion 32 may be formed at the corner portion 251 of the boundary 25 (see Figs. 2 and 3) or may be formed at the flat portion 252 (see Figs. 4 and 5). In the plastic bottle 1 according to this embodiment, the recess 31 or the protrusion 32 is formed at the boundary 25 between the shoulder portion 22 and the body portion 23. When the label 4 is attached so that the upper edge 41 of the label 4 overlaps with the recess 31 or the protrusion 32 (see Figs. 6A to 8), a gap 5 is formed between the label 4 and the recess 31 or the protrusion 32 on both sides in the circumferential direction. The label 4 is attached so that the peeling opening in the case of a roll label or the perforation in the case of a shrink label is located on the recess 31 or on both sides in the circumferential direction of the protrusion 32, making it easy to hook a finger on the peeling opening or the perforation. This provides the effect of making it easy to peel the label 4 from the plastic bottle 1.

[0025] The depth of the recessed portion 31 or the height of the protruding portion 32 can be set so that the length L5 of the gap 5 formed between the label 4 and the label 4 is long enough to allow a finger to be hooked on the label 4. In this embodiment, the length L5 of the gap 5 means the length in the horizontal direction (circumferential direction) of the portion where the upper edge 41 or the lower edge 42 of the label 4 is not in contact with the plastic bottle 1. For example, if the depth of the recessed portion 31 or the height of the protruding portion 32 is set so that the length L5 of the gap 5 is about 3 to 10 mm, it is possible to hook a finger on the label 4.

[0026] The recessed portion 31 or the protruding portion 32 may be formed in the body portion 23 (see FIGS. 9A and 9B). In this case, the label 4 may be attached to the plastic bottle 1 so that the upper edge 41 or the lower edge 42 of the label 4 overlaps the recessed portion 31 or the protruding portion 32 formed in the body portion 23. In addition, when the label 4 is a shrink label, the label 4 may be attached to the plastic bottle 1 so that the perforations of the label 4 overlap the recessed portion 31 or the protruding portion 32 formed in the body portion 23.

[0027] The recess 31 or the protrusion 32 may be formed at one or more corners 251 of the boundary 25 between the shoulder 22 and the body 23, but may be formed at multiple corners 251 (see Figs. 10 and 11). In this case, the recess 31 or the protrusion 32 is preferably formed so that the cross-sectional shape of the plastic bottle 1 is symmetrical, for example, the recess 31 or the protrusion 32 may be formed at two corners 251 or four corners 251 located diagonally. Similarly, the recess 31 or the protrusion 32 formed at the flat portion 252 of the boundary 25 between the shoulder 22 and the body 23 is preferably formed so that the cross-sectional shape of the plastic bottle 1 is symmetrical, for example, the recess 31 or the protrusion 32 may be formed at two flat portions 252 or four flat portions 252 facing each other. Similarly, the recess 31 or the protrusion 32 formed at the body 23 may be formed so that the cross-sectional shape of the plastic bottle 1 is symmetrical. Furthermore, when the cross-sectional shape of the body 23 of the plastic bottle 1 is substantially circular, the recesses 31 or protrusions 32 formed at the boundary 25 between the shoulder 22 and the body 23, and the recesses 31 or protrusions 32 formed in the body 23 may be formed at substantially equal intervals in the circumferential direction (see Figs. 12 and 13). As shown in Figs. 10 to 13, by forming a plurality of recesses 31 or protrusions 32, when attaching the label 4 to the plastic bottle 1, it becomes easy to position the peel-off opening and perforations of the label 4 in the gap 5 between the plastic bottle 1 and the label 4, even if the label 4 is not positioned relative to the plastic bottle 1.

[0028] The recesses 31 or the protrusions 32 may be formed on the bottom 24 (see Figs. 14 and 15). In this case, it is sufficient that the bottom 24 is formed with a plurality of protrusions 32 protruding in the vertical direction (axial direction) of the plastic bottle 1 and a plurality of recesses 31 located between two protrusions 32 adjacent in the circumferential direction. The protrusions 32 have a bottom surface 321 that is substantially circular in plan view from the bottom 24 side, and a side surface 322 that is substantially parallel to the vertical direction (axial direction) of the plastic bottle 1 and has a substantially cylindrical shape. Of the side surfaces 322 of the protrusions 32, the surface facing the outside in the radial direction of the plastic bottle 1 may be continuous with the body 23, or may be located slightly inward from the outer edge of the bottom 24. 14 and 15, when the label 4 is attached from the body 23 to the bottom 24, the lower edge 42 of the label 4 overlaps the side surface 322 of the protrusion 32, and a gap 5 is formed between the label 4 and the recess 31 located between two circumferentially adjacent protrusions 32. The label 4 is attached so that the peeling opening in the case of a roll label or the perforation in the case of a shrink label is positioned above the recess 31, making it easy to hook a finger on the peeling opening or the perforation. This has the effect of making it easier to peel the label 4 from the plastic bottle 1.

[0029] According to the plastic bottle 1 of this embodiment having the above-described configuration, whether the label 4 attached to the plastic bottle 1 is a roll label or a shrink label, a gap 5 is formed between the label 4 and the plastic bottle 1 to the extent that it is easy to catch a finger on the peel-off opening or perforation, so that the label 4 can be easily peeled off from the plastic bottle 1.

[0030] The above-described embodiments are described for the purpose of facilitating understanding of the present invention, and are not described for the purpose of limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design modifications and equivalents that fall within the technical scope of the present invention. [Explanation of symbols]

[0031] 1. Plastic bottle 2. Plastic bottle body 21...Mouth 22...Shoulder 23...Torso 24...Bottom 31…Recess 32…Convex part

Claims

1. A plastic bottle having a mouth, a shoulder portion continuous with the mouth, a body portion continuous with the shoulder, and a bottom portion continuous with the body, A recess or a protrusion is formed in at least one of the boundary between the shoulder portion and the body portion, the body portion, and the bottom portion, A plastic bottle characterized in that the recess or protrusion has a depth or height that enables a gap to be formed between a portion of the edge of the label and the plastic bottle when the label is attached to the plastic bottle by overlapping the recess or protrusion.

2. the edge of the label includes an upper edge located on the mouth side when the label is attached to the plastic bottle, and a lower edge located on the bottom side; 2. The plastic bottle according to claim 1, wherein the recess or the protrusion is formed at the boundary between the shoulder and the body, or on the body, so that when the label is attached to the plastic bottle, the upper edge of the label overlaps with the recess or the protrusion.

3. 3. The plastic bottle according to claim 2, wherein one of the recesses or protrusions is formed at the boundary between the shoulder and the body, or on the body.

4. 3. The plastic bottle according to claim 2, wherein a plurality of the recesses or protrusions are formed at the boundary between the shoulder portion and the body portion, or on the body portion, at substantially equal intervals in the circumferential direction of the plastic bottle.

5. The bottom portion is formed with a plurality of the protruding portions protruding in the axial direction of the plastic bottle, and a plurality of the recessed portions located between adjacent protruding portions in the circumferential direction, 2. The plastic bottle according to claim 1, wherein the protrusion has a bottom surface and a side surface that is substantially parallel to the axial direction.

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