JP2007223666A - Synthetic resin bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of difference in appearance of synthetic resin bottles fitted with labels thereon, which is caused by the bottles irregularly directed in transfer and of complicated work for avoiding this. <P>SOLUTION: The PET bottle has a spout 11 connected with a body portion 13 in which contents are filled, while the spout 11 is formed with an annularly-shaped neck-ring 1. The neck-ring 1 is equipped with a recess 2 that is engaged with a positioning tool and regulates the direction of the body portion 13 in a given direction. This recess 2 is constituted of a guide surface 3 that has one end 3a inclining with the reverse side 1f of the neck-ring 1 as a starting point, and of a level difference that forms a butting surface 4 against the positioning tool between the other end 3b of the guide surface 3 and the front surface 1f of the neck-ring 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a synthetic resin bottle capable of performing various operations in a state in which the direction of a body portion is regulated in a certain direction.

Some synthetic resin bottles, such as PET bottles, are decorated by attaching a label with a product name or design to the body, and as an example of the label, the bottle is put inside to heat shrink There is a cylindrical shrink label (for example, refer to Patent Document 1).
JP 2004-250040 A

  On the other hand, a heat-resistant bottle has a vacuum absorption panel on its body, so the display part with the design of characters and figures such as product names is on the vacuum absorption panel, or the panel is Depending on whether it is on the pillar to divide, the appearance changes greatly.

In contrast, when a screw cap is attached to a bottle suspended by a transfer line, a conventional synthetic resin bottle is formed with a concave portion having a flat bottom surface on the back surface of the neck ring for the purpose of preventing the rotation. There is one in which the concave portion is engaged with the convex portion of the hanging jig (see, for example, Patent Document 2).
Japanese Patent No. 3614473

  However, in such a conventional bottle, since the concave portion provided in the neck ring is merely intended to prevent the bottle from rotating, the problem that the direction of the body of the bottle becomes uneven has not been solved.

  The problem to be solved by the present invention is that the direction of the synthetic resin bottles becomes uneven, resulting in a difference in appearance when the labels are attached, and the work to avoid this is complicated.

  The present invention relates to a synthetic resin bottle having a mouth part connected to a body part filled with contents and forming an annular neck ring at the lower part of the mouth part. A recessed portion that engages with the flange portion to regulate the direction of the body portion in a fixed direction, the recessed portion has a guide surface that has one end inclined from the surface of the flange portion, the other end of the guide surface, and the flange And a step that forms an abutting surface with the positioning jig between the surface of the part and the surface of the part.

  In the present invention, the inclined surface can be formed along the circumferential direction of the flange portion. Moreover, this invention can also form the said inclined surface in the opposing edge which pinched | interposed the center axis | shaft of a mouth part toward the axial center of the said bottle, respectively.

  The bottle of the present invention is provided with a concave portion in the flange portion that engages with the alignment jig and regulates the direction of the body portion in a certain direction. Therefore, if the flange portion is engaged with the alignment jig, Work can be performed on each bottle in a state where the directions are always aligned in a certain direction.

  Therefore, according to the present invention, it is possible to produce a bottle in which a label is always mounted at a position that looks good without performing a complicated operation such as changing the direction of the bottle to an appropriate direction.

  Moreover, since the recessed part which concerns on this invention bottle has a guide surface which inclines starting from the surface of a flange part, smooth positioning without overloading becomes possible.

  Hereinafter, the synthetic resin bottle of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view showing a heat-resistant PET (polyethylene terephthalate) bottle according to the present invention.

  The PET bottle is a biaxially stretched blow-molded bottle in which the mouth portion 11, the shoulder portion 12, the body portion 13 and the bottom portion 14 are integrally connected, and an annular flange portion (hereinafter referred to as “neck ring”) is provided at a lower portion of the mouth portion 11. .) 1 is formed, and the body 13 has a plurality of reduced pressure absorption panels 13a around the body 13, and each of the reduced pressure absorption panels 13a is partitioned by a plurality of columns 13b.

  2 (a) and 2 (b) are an enlarged side view showing the shoulder 12 of FIG. 1 and a back view showing the back surface 1f of the neck ring 1, respectively.

  In FIG. 2, reference numeral 2 denotes a recess that is disposed at each of the opposing edges across the mouth portion 11 and engages with an alignment jig to regulate the direction of the body portion 13 in a certain direction.

  The recess 2 extends along the circumferential direction from the outer edge 1e of the neck ring 1 as shown in FIG.2 (b), and starts from the back surface 1f of the neck ring 1 as shown in FIG.2 (a). A guide surface 3 having one end 3a which is inclined and a positioning jig between the other end 3b which becomes the deepest part of the guide surface 3 and gradually becomes deeper in the circumferential direction and the back surface 1f of the neck ring 1. It consists of the level | step difference which forms the contact surface 4 with the formed convex part.

  The concave portion 2 is provided at a preform stage before the bottle is blow-molded. As a specific example, the preform is integrally formed in the step of injection molding. The positional relationship with the body 13 of the bottle is determined at the stage of blow molding the bottle. That is, when the preform is placed in the blow mold, the portion of the mold for forming the column 13b and the recess 2 formed in advance on the preform are aligned. After this alignment is completed, if the preform in the blow mold is blown, a bottle having a reduced pressure absorption panel 13a and a column 13b is formed on the body portion 13 and the positions of the column 13b and the recess 2 are formed. The relationship is always constant.

  When a shrink label is attached to the body 13 of the bottle, first, the back surface 1f of the neck ring 1 is placed on each of the two alignment jigs approaching from both sides of the mouth 11, and the bottle is gripped. Next, when the bottle is rotated around the axis O, the bottle stops at the position where the convex portion of the alignment jig abuts against the abutting surface 4, and the bottle body 13 is always in the direction as shown in FIG. Aligned to face When the alignment jig is removed in this state, the bottle flows on the line in the direction fixed by the alignment jig, so if a cylindrical shrink label is put on the outside of the barrel 13 from the mouth 11 side of the bottle. The display portion on which the design such as characters and figures such as the product name always applied to the shrink label can be aligned on the vacuum absorbing panel 14a. Therefore, if the heat treatment is carried out as it is, the shrink label can be attached with the display portion arranged on the reduced pressure absorption panel 13a. In general, the shrink label is supplied so that the display portion always has a fixed direction.

  That is, since such a PET bottle is provided with a recess 2 in the neck ring 1 that engages the alignment jig and regulates the direction of the body 13 in a certain direction, the neck ring 2 can be engaged with the alignment jig. For example, the direction of the body portion 13 can be always aligned in a direction in which the reduced pressure absorption panel 13a is always in front of the work side.

  In addition, since the recess 2 has the guide surface 3 that is inclined with the back surface 1f of the neck ring 1 as a starting point, smooth and easy alignment is possible. In this embodiment, the shrink label is covered from the mouth 11 side, but the bottle may be covered from the bottom 14 side while being held by the alignment jig. Moreover, although the recessed part 2 was provided in two sides of the neck ring 1 on both sides of the opening | mouth part 11, it should just be at least one place.

  There are other forms of bottles according to the invention.

  3 (a) and 3 (b) are respectively an enlarged side view showing another form of a PET bottle according to the present invention with its shoulder 12 and a rear view showing a back surface 1f of the neck ring 1 with reference to FIG. It is. In the following description, the same parts as those in FIGS.

  In FIG. 3, as shown in FIG. 3 (b), the recesses 5 extend in parallel to each other on opposite edges of the neck ring 1 across the central axis (bottle axis O) of the mouth 11. As shown in FIG. 3 (a), a guide surface 6 having one end 6a inclined starting from a portion corresponding to the outer edge 1e of the back surface 1f of the neck ring 1, and the guide surface 6 gradually deeper toward the bottle axis O. Thus, a step is formed between the other end 6b, which is the deepest portion, and the rear surface 1f of the neck ring 1 to form a contact surface 7 with a convex portion provided on the alignment jig. Accordingly, each of the butting surfaces 7 is parallel to a plane F including the bottle axis O (in FIG. 1, a plane perpendicular to the drawing from the axis O).

  In this embodiment, a shrink label can be attached to the body portion 13 of the bottle in the same manner as the previous embodiment. In this embodiment as well, the recesses 5 are provided at two locations on both sides of the neck ring 1 with the central axis of the mouth portion 11 interposed therebetween.

  Although the above description is to describe the preferred embodiment of the present invention, various modifications can be made within the scope of the claims. For example, the bottle according to the present invention is not limited to one having heat resistance. Therefore, the raw material of the bottle is not limited to PET. Further, the shape of the bottle is not limited and may be a square bottle or the like. Furthermore, the label attached to the bottle is not limited to the shrink label, but may be a belt-like seal label, a stretch label having stretchability, or the like. The elements of each form can be used in combination depending on the application.

  The synthetic resin bottle according to the present invention can be used for beverage containers, chemical containers and the like.

It is a side view which shows the PET bottle according to this invention. (a), (b) is the enlarged side view which shows one form of the PET bottle according to this invention in the opening | mouth part of FIG. 1, and the rear view which shows the back surface of the neck ring, respectively. (a), (b) is the enlarged side view which shows the other form of the PET bottle according to this invention in the opening | mouth part of FIG. 1, and the rear view which shows the back surface of the neck ring, respectively.

Explanation of symbols

1 Neck ring 2 Recess 3 Guide surface
3a One end of guide surface
3a The other end of the guide surface 4 The contact surface 5 The recess 6 The guide surface
6a One end of guide surface
6a Guide surface other end 7 Contact surface
11 mouth
12 shoulder
13 Torso
14 Bottom

Claims (3)

In a synthetic resin bottle having a mouth part connected to a body part filled with contents, and forming an annular flange part at the lower part of this mouth part,
The flange portion is provided with a concave portion that engages with a bottle alignment jig to regulate the direction of the body portion in a certain direction,
A step in which the concave portion forms an abutting surface between the guide surface having one end inclined from the surface of the flange portion and the alignment jig between the other end of the guide surface and the surface of the flange portion. A synthetic resin bottle characterized by comprising:   The synthetic resin bottle according to claim 1, wherein the inclined surface is formed along a circumferential direction of the flange portion.   2. The synthetic resin bottle according to claim 1, wherein the inclined surfaces are respectively formed at opposing edges sandwiching the central axis of the mouth portion toward the axis of the bottle.

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