JP2019026292A - Synthetic resin container - Google Patents

Abstract

To provide a synthetic resin container which has secured a wide label mounting part by adding a squeeze property while securing a decompression adsorption function to a decompression absorption part which absorbs decompression inside a container by cooling after high-temperature filling of contents, and which is formed by blow molding.SOLUTION: A synthetic resin container 1 formed by blow molding includes a substantially cylindrical trunk 3 whose diameter is larger than a mouth part 2 and which can be squeezed. The trunk 3 includes: a label mounting part 7 on which a label 6 is mounted; and a decompression absorption part 8 located at an upper side which is the direction toward the side of the mouth part 2 along the axial direction of the trunk 3 or a lower side which is the opposite direction from the label mounting part 7. In the decompression absorption part 8, three decompression absorption panels 9 and three pillar parts 10 are arrayed across the whole periphery in the circumferential direction of the trunk 3 so that the decompression absorption panels 9 and the pillar parts 10 are arranged alternately and adjacent to each other.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a synthetic resin container formed by blow molding.

  A synthetic resin container formed by blow molding having a substantially cylindrical barrel portion whose diameter is larger than that of a mouth portion, wherein the barrel portion is positioned below a label attachment portion to which a label is attached and a label attachment portion. What has a decompression absorption part to perform is known. For example, in the synthetic resin container described in Patent Document 1, the reduced-pressure absorption part includes six reduced-pressure absorption panels and six column parts, and the reduced-pressure absorption panel and the column parts over the entire circumference in the circumferential direction of the body part. They are arranged alternately and adjacent to each other. According to such a reduced pressure absorption section, for example, when the temperature drops due to cooling after filling and capping the contents at a high temperature in the production line, each reduced pressure absorption panel is deformed toward the inside of the container, so that the inside of the container By absorbing the reduced pressure, it is possible to prevent the container from being distorted.

Japanese Patent Laid-Open No. 2017-30779

  However, when a conventional synthetic resin container as described in Patent Document 1 is configured as a squeeze container in which a user discharges contents by squeezing (squeezing) the torso with a finger, a reduced pressure absorption unit However, there is room for improvement in squeeze properties such that it is difficult to discharge an appropriate amount. In addition, it is conceivable to provide a squeeze portion that can be squeezed in a portion other than the reduced pressure absorption portion. However, in this case, the label mounting portion is remarkably small, which causes a problem that a sufficient display area cannot be secured.

  Therefore, the object of the present invention is to secure a wide label mounting part by providing a squeeze property while ensuring a reduced pressure absorption function to a reduced pressure absorption part that absorbs the reduced pressure inside the container due to cooling after high temperature filling of contents. Another object of the present invention is to provide a synthetic resin container formed by blow molding.

  One mode of the synthetic resin container formed by blow molding has a substantially cylindrical squeezeable body that is expanded in diameter from the mouth. The body part includes a label mounting part on which a label is mounted, and an upper side which is a direction from the label mounting part toward the mouth along the axial direction of the body part, or a lower side which is the opposite direction. And a vacuum absorbing portion located. In the reduced pressure absorption part, three reduced pressure absorption panels and three column parts are arranged so that the reduced pressure absorption panels and the column parts are alternately arranged and adjacent to each other in the circumferential direction of the body part, It is arranged.

  According to the present invention, the reduced pressure absorption part that absorbs the reduced pressure inside the container by cooling after the high temperature filling of the contents, secured a wide label mounting part by providing squeeze property while ensuring the reduced pressure absorption function, A synthetic resin container formed by blow molding can be provided.

It is a side view which shows the synthetic resin container which concerns on 1st Embodiment. It is the side view seen from the angle different from FIG. It is AA sectional drawing of FIG. It is a top view of the synthetic resin container shown in FIG. It is a bottom view of the synthetic resin container shown in FIG. It is explanatory drawing shown in the side view which looked at the synthetic resin container as a comparative example which used two decompression absorption panels from two different angles. It is explanatory drawing shown in the side view which looked at the synthetic resin container as a comparative example which used four decompression absorption panels from two different angles. It is explanatory drawing shown in the side view which looked at the synthetic resin container as a comparative example which used six decompression absorption panels from two different angles. It is a side view which shows the synthetic resin container which concerns on 2nd Embodiment. It is the side view seen from the angle different from FIG.

  Hereinafter, a synthetic resin container according to an embodiment will be described in detail with reference to the drawings.

  First, with reference to FIG. 1 thru | or FIG. 8, the synthetic resin container 1 which concerns on 1st Embodiment is illustrated and demonstrated in detail. As shown in FIGS. 1 to 5, the synthetic resin container 1 according to the present embodiment includes a substantially cylindrical squeezeable body 3 having a diameter larger than that of the mouth 2. The body portion 3 has a central axis O. In the present specification, the upper direction is a direction toward the mouth portion 2 along the axial direction of the trunk portion 3 (the direction along the central axis O of the trunk portion 3), and the lower direction is the opposite direction. . The synthetic resin container 1 is formed by blow molding. That is, the synthetic resin container 1 is configured as a synthetic resin blow-molded container. In the present embodiment, a flange-shaped neck ring 2a and a locking ring 2b for retaining a cap (not shown) are provided on the outer peripheral surface of the cylindrical mouth portion 2. The neck ring 2a is provided intermittently and can withstand the pressure when the cap is attached. In the present embodiment, as shown in FIG. 1, the lower end of the mouth portion 2 is connected to a shoulder portion 4 having an inclined wall shape whose diameter is increased downward. The upper end of the trunk portion 3 is connected to the lower end of the shoulder portion 4. The lower end of the body part 3 is closed by the bottom part 5. The shapes of the mouth part 2, the shoulder part 4 and the bottom part 5 can be appropriately changed.

  The trunk portion 3 has a label mounting portion 7 on which a label 6 is mounted. The label mounting part 7 has a substantially cylindrical shape. The label 6 may be provided over the entire circumference in the circumferential direction, or may be provided only in part (for example, in a C shape in a top view).

  In the present embodiment, the body portion 3 has a reduced pressure absorption portion 8 located below the label mounting portion 7. As shown in FIGS. 1 to 3, the reduced pressure absorbing portion 8 includes three reduced pressure absorbing panels 9 and three column portions 10, and the reduced pressure absorbing panel 9 and the column portions 10 over the entire circumference in the circumferential direction of the body portion 3. Are arranged alternately and adjacent to each other. Each vacuum absorbing panel 9 is recessed more radially inward of the body 3 than the two adjacent pillars 10. More specifically, the reduced-pressure absorption unit 8 includes three reduced-pressure absorption panels 9 and three column portions 10 in any cross section (that is, a cross section perpendicular to the central axis O of the body 3). The decompression absorption panels 9 and the column portions 10 are arranged so as to be alternately arranged and adjacent to each other over the entire circumference in the circumferential direction of the portion 3, and each decompression absorption panel 9 has a trunk portion rather than two adjacent column portions 10. 3 is recessed inward in the radial direction. The three reduced pressure absorption panels 9 have the same shape and size. The three pillar portions 10 have the same shape and size.

  In this embodiment, each pillar 10 extends in the axial direction of the trunk 3 in a front view as viewed along the radial direction of the trunk 3 as shown in FIG. 2 (that is, the axial direction of the trunk 3). Column body 10a (having a longitudinal direction coinciding with). 2 is a side view as viewed from a position shifted by 90 ° in the circumferential direction from FIG. 1 (viewed from the right side in FIG. 1). In this embodiment, each column main body 10a has a width W1 (see FIG. 2) that is the same over the entire length in the axial direction of the body portion 3. In the present embodiment, each column portion 10 has an arc shape so that the intermediate portion is positioned on the radially inner side of the trunk portion 3 in any longitudinal section (that is, a section including the central axis O of the trunk portion 3). It is curved (see the ridge line on the right side of the body part 3 in FIG. 1). In this embodiment, each column main body 10a is curved in an arc shape along the circumferential direction of the body portion 3 in any cross section. More specifically, each column portion 10 is curved in an arc shape along the circumferential direction of the body portion 3 in any cross section.

  In the present embodiment, as shown in FIG. 3, each decompression absorption panel 9 includes a panel bottom wall 9 a that is curved in an arc shape along the circumferential direction of the body portion 3 on the radially inner side of the body portion 3 from the column main body 10 a. The panel bottom wall 9a has a pair of panel side walls 9b that connect the column main body 10a and the panel bottom wall 9a at both side edges. More specifically, each panel bottom wall 9a is curved in an arc shape along the circumferential direction of the body portion 3 on the radial inner side of the body portion 3 from the column body 10a in any cross section including the column body 10a. doing. In the present embodiment, the upper end edge 9c of each decompression absorption panel 9 is curved so that the intermediate portion is positioned upward. In the present embodiment, the lower end edge 9d of each decompression absorption panel 9 is curved so that the intermediate portion is positioned below.

  In the present embodiment, the synthetic resin container 1 is formed by extrusion blow molding (EBM). That is, the synthetic resin container 1 is configured as a synthetic resin extrusion blow molded container. The bottom part 5 is formed with a heat welding seal part 5a formed by sandwiching and cutting a cylindrical parison made of a molten resin extruded from an extruder by a pinch-off part of a blow mold. The synthetic resin container 1 has a layer structure of PP (polypropylene resin) / adhesion / EVOH (ethylene-vinyl alcohol copolymer resin) / adhesion / PP. However, the synthetic resin container 1 may be formed by biaxial stretch blow molding of a preform. That is, the synthetic resin container 1 may be configured as a synthetic resin biaxially stretched blow molded container. The synthetic resin container 1 is not limited to the layer configuration described above, and can have various layer configurations.

  In the present embodiment, an upper end annular groove 11 including a circumferential groove continuously extending over the entire circumference in the circumferential direction of the body portion 3 is provided between the label mounting portion 7 and the reduced pressure absorbing portion 8. In the present embodiment, a lower end annular groove 12 including a circumferential groove continuously extending over the entire circumference in the circumferential direction of the body portion 3 is provided below the decompression absorbing portion 8. By providing the upper annular groove 11 and the lower annular groove 12, the strength of the synthetic resin container 1 is improved. In the present embodiment, the upper annular groove 11 has a width W2 (see FIG. 2) larger than the lower annular groove 12. The shape and number of the upper annular groove 11 and / or the lower annular groove 12 can be changed. The upper annular groove 11 and / or the lower annular groove 12 may not be provided.

  In the present embodiment, the label mounting portion 7 is provided with three annular grooves 13. Each annular groove 13 includes a circumferential groove that continuously extends over the entire circumference in the circumferential direction of the body portion 3. The three annular grooves 13 have the same width W3 (see FIG. 2) and are arranged at equal intervals. By providing the three annular grooves 13, the strength of the synthetic resin container 1 is improved. The shape and number of the annular grooves 13 can be changed. The annular groove 13 may not be provided.

  Since the synthetic resin container 1 according to the present embodiment has three decompression absorption panels 9 as described above, there are two, four or four decompression absorption panels 9 as shown in FIGS. Compared with the case where the number is set to six, the flexibility of the reduced pressure absorbing portion 8 is improved when the upper portion of the reduced pressure absorbing panel 9 (see FIG. 3 which is a sectional view taken along the line AA in FIG. 1) is squeezed, and the squeezing property is improved can do. 6 to 8, the diagrams shown on the right side are side views (viewed from the right side in the diagrams shown on the left side) as viewed from a position shifted by 90 ° in the circumferential direction from the diagram shown on the left side. Further, according to the synthetic resin container 1 according to the present embodiment, when squeezing, for example, as shown in FIG. 3, the index finger 14a is placed on the relatively hard column portion 10 and the decompression absorption panel is relatively flexible with the thumb 14b. 9 can be pressed, it is easy to adjust the push-in condition, and thus the discharge amount of the contents can be easily adjusted. Further, even if the reduced pressure absorption panel 9 is pressed with the index finger 14a while the thumb 14b is placed on the column portion 10, the pressing condition can be easily adjusted. In the synthetic resin container 1 according to the present embodiment, since the column part 10 is located on the opposite side across the central axis O of each decompression absorption panel 9, when holding the decompression absorption part 8, the index finger 14a and One of the thumbs 14b is naturally attached to the reduced pressure absorption panel 9 and the other is attached to the column part 10 naturally. Therefore, it is possible to easily adjust the discharge amount of the contents simply by gripping and squeezing as it is.

  In addition, the synthetic resin container 1 of the present embodiment having three decompression absorption panels 9 is composed of synthetic resin containers 15 to 17 of comparative examples having two, four, or six decompression absorption panels 9 (FIGS. 6 to 6). 8), the vacuum absorption function is improved (volume change is increased), and the empty buckling strength (the buckling strength when the container is emptied) can be secured to the same level or higher. .

  In this embodiment, each decompression absorption panel 9 has the panel bottom wall 9a and the pair of panel side walls 9b as described above, so that both the decompression absorption function and the vacant buckling strength are effectively improved. it can. In this embodiment, since the upper end edge 9c of each decompression absorption panel 9 is curved so that the middle part is located above, the flexibility of the decompression absorption part 8 when the upper part of the decompression absorption panel 9 is squeezed. Can be effectively increased.

  Therefore, according to the synthetic resin container 1 according to the present embodiment, when the capacity is 500 ml, the area ratio of the label mounting part 7 to the reduced pressure absorbing part 8 (specifically, the ratio of the width in the vertical direction. , W5 / W4 (refer to FIG. 2) can be set to 0.6 to 1.2, and a wide label mounting portion 7 can be secured.

  Next, the synthetic resin container 1 ′ according to the second embodiment will be described in detail with reference to FIGS. 9 to 10. 10 is a side view as viewed from a position shifted by 90 ° in the circumferential direction from FIG. 9 (viewed from the right side in FIG. 9). The synthetic resin container 1 ′ according to the present embodiment has a width W2 (see FIG. 10) that is smaller at the upper annular groove 11 ′ than at the lower annular groove 12 ′, compared with the synthetic resin container 1 according to the first embodiment. Although it differs in the point, it is the same structure in other points. According to the present embodiment, with the above-described configuration, it is possible to obtain a vacuum absorption function and a squeeze property that are better than the case of the synthetic resin container 1 according to the first embodiment.

  The foregoing description is merely illustrative of one embodiment and is not intended to limit the scope of the claims. Various modifications can be made to the above-described embodiment based on the basic matters of the present disclosure.

  For example, in the first embodiment and the second embodiment, the reduced pressure absorption unit 8 may be located above the label mounting unit 7.

DESCRIPTION OF SYMBOLS 1, 1 'Synthetic resin container 2 Mouth part 2a Neck ring 2b Locking ring 3 Trunk part 4 Shoulder part 5 Bottom part 6 Label 7 Label mounting part 8 Decompression absorption part 9 Decompression absorption panel 9a Panel bottom wall 9b Panel side wall 9c Decompression absorption Upper end edge of panel 9d Lower end edge of vacuum absorbing panel 10 Column portion 10a Column body 11, 11 'Upper end annular groove 12, 12' Lower end annular groove 13 Annular groove 14a Index finger 14b Thumb 15-17 Synthetic resin container (comparative example)
O Center axis W1-W5 Width

Claims (8)

A synthetic resin container formed by blow molding, having a substantially cylindrical squeeze-capable body expanded from the mouth,
The body part includes a label mounting part on which a label is mounted, and an upper side which is a direction from the label mounting part toward the mouth along the axial direction of the body part, or a lower side which is the opposite direction. A vacuum absorption part located,
In the reduced pressure absorption part, three reduced pressure absorption panels and three column parts are arranged so that the reduced pressure absorption panels and the column parts are alternately arranged and adjacent to each other in the circumferential direction of the body part, An array of synthetic resin containers.   3. The synthetic resin container according to claim 1, wherein each column portion has a column main body that is elongated in an axial direction of the trunk portion in a front view as viewed along a radial direction of the trunk portion.   The synthetic resin container according to claim 2, wherein each column main body has a width that is the same over the entire length in the axial direction of the body portion.   4. The synthetic resin container according to claim 2, wherein each column body is curved in an arc shape along a circumferential direction of the body portion.   Each decompression absorption panel includes a panel bottom wall that is curved in an arc shape along a circumferential direction of the body portion radially inward of the body portion from the column body, and the column body at both side edges of the panel bottom wall. The synthetic resin container according to any one of claims 2 to 4, further comprising a pair of panel side walls connecting the panel bottom wall.   The synthetic resin container according to any one of claims 1 to 5, wherein the reduced-pressure absorption unit is positioned below the label mounting unit.   The synthetic resin container according to claim 6, wherein an upper end edge of each reduced pressure absorption panel is curved so that an intermediate portion is positioned upward. Between the label mounting part and the reduced pressure absorbing part, an upper end annular groove comprising a circumferential groove continuously extending over the entire circumference in the circumferential direction of the body part is provided,
The synthetic resin container according to claim 6 or 7, wherein a lower end annular groove comprising a circumferential groove continuously extending over the entire circumference in the circumferential direction of the body portion is provided below the decompression absorbing portion.

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