container

Abstract

To provide a container capable of suppressing generation of a difference in a discharging property of a content solution depending on an amount of the content solution.SOLUTION: In a container 100, a container body 1 comprises a trunk part 2; the trunk part is formed with a linear rib 30; the rib includes a vertical rib 33 and horizontal ribs 31, 32; the vertical rib is formed so as to extend in a vertical direction of the trunk part; the horizontal ribs connected to the vertical rib are formed so as to extend toward a predetermined angular range in a circumferential direction of the trunk part; and the predetermined angular range is 20 degrees or more and 80 degrees or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Various types of blow-molded resin containers have been proposed (for example, Patent Document 1). The resin container disclosed in Patent Document 1 is configured so that it can be filled with various types of medicinal liquids as the liquid contents. When the container is used as an infusion bottle, for example, external pressure (atmospheric pressure) acts on the outer surface of the container, so that the container gradually collapses and the liquid contents are discharged (dribbled). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-154940 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a container such as that in Patent Document 1, the container collapses as the liquid content is discharged. Since a resin container has a moderate elasticity, when the container collapses, the container tends to return to its original shape, making it difficult for the liquid content to be discharged from the container.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a container that can suppress differences in the dischargeability of the content liquid depending on the amount of the content liquid. [Means for solving the problem]

[0006] According to the present invention, there is provided a container having a container body, the container body having a body portion on which linear ribs are formed, the ribs having vertical ribs and horizontal ribs, the vertical ribs being formed to extend in the vertical direction of the body portion, the horizontal ribs being formed to extend over a predetermined angular range in the circumferential direction of the body portion and being connected to the vertical ribs, the predetermined angular range being 20 degrees or more and 80 degrees or less.

[0007] The container according to the present invention has a vertical rib and a horizontal rib that is formed to extend in a predetermined angular range (20 degrees or more and 80 degrees or less) in the circumferential direction of the body and is connected to the vertical rib, which effectively promotes deformation of the container and suppresses differences in the dischargeability of the content liquid.

[0008] Various embodiments of the present invention will be described below. The embodiments described below can be combined with each other. Preferably, a container is provided in which the transverse ribs include upper transverse ribs, the upper transverse ribs being connected to upper portions of the longitudinal ribs. Preferably, a container is provided in which the transverse ribs include a lower transverse rib, the lower transverse rib being connected to a lower portion of the longitudinal rib. Preferably, a container is provided in which the angle between the longitudinal ribs and the transverse ribs is 120 degrees or less. Preferably, a container is provided in which the transverse ribs are formed symmetrically with respect to the longitudinal ribs. Preferably, the container is provided such that the rib is formed so as to be recessed in a direction from the outer surface of the body portion toward the inner surface of the body portion. Preferably, a container is provided, wherein the container comprises a flat container. Preferably, a container is provided in which the longitudinal rib is formed on a parting line of the body. Preferably, the value obtained by subtracting the second thickness from the first thickness is 0.2 mm or less, the first thickness is the thickness of a first portion, and the second thickness is the thickness of a second portion, the first and second portions are located at the same height in the upright container body, the first portion is located at a position that is 90 degrees from the parting line in the circumferential direction of the body portion, and the second portion is located on the parting line. Preferably, the container body further has a mouth and a shoulder, an upper part of the shoulder is connected to the mouth and a lower part of the shoulder is connected to the body, the shoulder is formed so as to expand in diameter in a direction from the mouth to the body, the shoulder has a portion in a PL cross section where an angle between a tangent to the surface of the shoulder and a horizontal line is 15 degrees or less, and the PL cross section is a cross section of the shoulder passing through the central axis of the mouth and the parting line. Preferably, there is provided a container in which, in the PL cross section, the width in the height direction of the body portion is four or more times the width in the height direction of the shoulder portion. [Brief description of the drawings]

[0009] [Figure 1] Fig. 1A is a perspective view of a container 100 according to an embodiment, and Fig. 1B is a bottom view of the container 100 shown in Fig. 1A. [Diagram 2] Figure 2A is a front view of the container 100 shown in Figure 1A. Figure 2B is a lateral side view (right side view or left side view) of the container 100 shown in Figure 2A. [Diagram 3] FIG. 3 is a perspective view showing the container 100 cut along a horizontal plane passing through the upper horizontal rib 31. As shown in FIG. [Figure 4] FIG. 4 is a top view of the cut container 100 shown in FIG. [Diagram 5] 5 is an end view of the shoulder portion 5 etc. The cut surface (end surface) shown in FIG. [Figure 6]Fig. 6A is a graph showing the thickness distribution (L1) at a portion on the parting line PL and the thickness distribution (L2) at a portion of PL90 (a position at 90 degrees from the parting line PL in the circumferential direction of the container). The measurement positions on the vertical axis shown in Fig. 6A correspond to positions 0 to 9 shown in Fig. 2A. Positions 0 to 9 are arranged at equal intervals in the height direction. Fig. 6B is a graph showing the distribution of the average values ​​of the thicknesses at the portion on the parting line PL and the portion of PL90. Fig. 6C shows the numerical data of the graphs shown in Figs. 6A and 6B. [Figure 7] Figures 7A to 7D are based on the results of a simulator analysis, and show how the container is gradually crushed by applying pressure to the outside of the container to create a pressure difference between the inside and outside of the container. In Figures 7A to 7D, the reduced volume of the container (the crushed volume of the container) can be regarded as the actual amount of liquid discharged from the container. [Figure 8] FIG. 8 is a view of the container shown in FIG. 7D from a lateral side (right or left side). [Figure 9] Fig. 9A is a perspective view of container 100 according to Modification 1. Fig. 9B is a lateral side view (right side view or left side view) of container 100 shown in Fig. 9A. [Figure 10] Fig. 10 is an end view of the shoulder portion 5 etc. of the container 100 shown in Fig. 9. The cut surface (end surface) shown in Fig. 10 is a plane passing through the parting line PL and the central axis z of the mouth portion 3. [Figure 11] Fig. 11 is based on the analysis results of a simulator and shows the state in which the container according to Modification 1 is crushed by applying pressure to the outside of the container to create a pressure difference between the inside and outside of the container. Fig. 11 is a view corresponding to Fig. 8. [Figure 12] FIG. 12 is a perspective view of a container 100 according to the second modification. [Figure 13] Fig. 13 is based on the analysis results of a simulator and shows a state in which the container according to Modification 2 is crushed by applying pressure to the outside of the container to create a pressure difference between the inside and outside of the container. Fig. 13 is a view corresponding to Fig. 8. [Figure 14]Fig. 14A is a dimensional explanatory diagram of container 100 according to Modification 3, and is a horizontal side view of container 100. Fig. 14B is a dimensional explanatory diagram of container 100 according to Modification 3, and is a top view showing container 100 cut in the same manner as Fig. 4. Fig. 14C is a table showing various dimensions. [Figure 15] Fig. 15A is a perspective view of a container 100 according to a comparative example, and Fig. 15B is a bottom view of the container 100 shown in Fig. 15A. [Figure 16] Figure 16A is a front view of the container 100 shown in Figure 15A. Figure 16B is a lateral side view (right side view or left side view) of the container 100 shown in Figure 16A. [Figure 17] Fig. 17 is based on the analysis results of a simulator and shows the state in which the container according to the comparative example is crushed by applying pressure to the outside of the container to create a pressure difference between the inside and outside of the container. Fig. 17 is a diagram corresponding to Fig. 8. [Figure 18] Fig. 18 is a graph showing the relationship between the amount of pressurization (amount of depressurization) and the reduced volume (amount of drainage) for the container 100 of the embodiment, the container of the comparative example in Fig. 15, and the containers 100 of Modifications 1 and 2. Fig. 18 is a graph obtained using the simulator described with reference to Figs. 7A to 7D etc. [Figure 19] Fig. 19 is a graph showing the relationship between the amount of pressurization (amount of depressurization) and the reduced volume (amount of drainage) for the container 100 of the embodiment (a container with an angle range 2θ of 40 degrees and 80 degrees), the container of the comparative example in Fig. 15, and a container of a comparative example (with a Y-shaped rib) different from the comparative example in Fig. 15. Fig. 19 is a graph obtained using the simulator described with reference to Figs. 7A to 7D etc. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 1. Embodiment 1-1.Configuration Description Hereinafter, an embodiment will be described with reference to the drawings. In the drawings, the dashed dotted lines indicate the portions of the shape of the container 100 where the radius of curvature changes. 1A to 2B, the container 100 includes a container body 1, which is configured to be capable of containing a liquid content. The container 100 is used, for example, as an infusion bottle for dripping a liquid medicine. The container 100 can also be used, for example, as a medical vial from which the liquid content is aspirated by a syringe or the like.

[0011] As shown in Figures 3 and 4, the container 100 is a flat container. Specifically, as shown in Figure 4, when the container 100 is viewed from the front, the left-right width of the container 100 (width parallel to the longitudinal axis x) is wider than the front-rear width of the container 100 (width parallel to the lateral axis y). The container body 1 is a blow molded product. Blow molding is a molding method in which thermoplastic resin is sandwiched between split molds, air is injected into the resin to inflate it, the resin is adhered to the inner surface of the mold, and the resin is cooled, solidified, and removed. 1A to 3, the container body 1 includes a flattened body 2, a cylindrical mouth 3, a bottom 4, and a shoulder 5 connecting the mouth 3 and the body 2. The resin constituting the container body 1 can be a thermoplastic resin suitable for blow molding, and can be an olefin resin such as polyethylene or polypropylene.

[0012] 1-1-1.Torso 2 As shown in Figs. 1A to 4, the body 2 is a cylindrical member, and a shoulder portion 5 is connected to the upper portion and a bottom portion 4 is connected to the lower portion. As shown in Fig. 4, an axis passing through a pair of parting lines PL of the body 2 is defined as a longitudinal axis x, and an axis perpendicular to the longitudinal axis x is defined as a transverse axis y. PL90 shown in Fig. 4 corresponds to a position that is 90 degrees from the parting line PL in the circumferential direction of the body 2. The transverse axis y passes through a pair of PL90. The central axis z of the mouth portion 3 passes through the intersection of the longitudinal axis x and the transverse axis y. The center O corresponds to the intersection of the longitudinal axis x and the transverse axis y.

[0013] The body 2 has a pair of first surfaces 21 facing each other, and a pair of second surfaces 22 facing each other. In the embodiment, the pair of first surfaces 21 have the same shape, and the pair of second surfaces 22 also have the same shape.

[0014] 1-1-1-1.First surface part 21 The first surface portion 21 is formed so as to curve from the side connected to one second surface portion 22 to the side connected to the other second surface portion 22. Linear ribs 30 are formed on the first surface portion 21. The ribs 30 include horizontal ribs (upper horizontal ribs 31 and lower horizontal ribs 32) and vertical ribs 33. As shown in Figs. 3 and 4, the ribs 30 are formed so as to be recessed in a direction from the outer surface of the first surface portion 21 toward the inner surface of the first surface portion 21.

[0015] As shown in FIG. 1A and FIG. 2B, the vertical rib 33 is a straight rib formed to extend in the vertical direction of the body 2, and is formed along the parting line PL. The upper horizontal rib 31 is connected to the upper part of the vertical rib 33. In the embodiment, the upper horizontal rib 31 is connected to the upper end of the vertical rib 33, but is not limited to this. The vertical rib 33 may extend above the upper horizontal rib 31 so as to protrude from the upper horizontal rib 31. The lower horizontal rib 32 is connected to the lower part of the vertical rib 33. In the embodiment, the lower horizontal rib 32 is connected to the lower end of the vertical rib 33, but is not limited to this. The vertical rib 33 may extend below the lower horizontal rib 32 so as to protrude from the lower horizontal rib 32.

[0016] 4, the upper cross rib 31 is formed to extend over a predetermined angle range 2θ in the circumferential direction of the body 2. The angle range θ corresponds to the angle range from the position of the parting line PL to the position of one end of the upper cross rib 31. The lower cross rib 32 has the same configuration as the upper cross rib 31. That is, like the upper cross rib 31, the lower cross rib 32 is also formed to extend over a predetermined angle range 2θ in the circumferential direction of the body 2. 3, the upper horizontal rib 31 and the lower horizontal rib 32 are formed symmetrically with respect to the vertical rib 33 (across the vertical rib 33). Therefore, the range in which each horizontal rib (upper horizontal rib 31 and lower horizontal rib 32) is formed is twice the angle range θ, i.e., 2θ.

[0017] In the embodiment, the value of the predetermined angle range 2θ is 40 degrees (θ=20 degrees). The value of the predetermined angle range 2θ is not limited to 40 degrees. The value of the predetermined angle range 2θ may be, for example, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, and may be within a range between any two of the numerical values ​​exemplified here. The value of the predetermined angle range 2θ may also be within a range between any two of the numerical values ​​exemplified here, and for example, the predetermined angle range 2θ is preferably a value within a range of 20 degrees or more and 80 degrees or less. By setting the predetermined angle range 2θ to a value within this range, the deformation of the container body 1 is effectively promoted, and it is possible to effectively suppress the occurrence of differences in the dischargeability of the content liquid depending on the amount of the content liquid.

[0018] In the embodiment, an example is shown in which the angle range values ​​of the upper cross rib 31 and the lower cross rib 32 are the same, but this is not limited to this and they may be different.

[0019] When the first surface portion 21 is projected onto a plane passing through the short axis y and the central axis z, the angle between the horizontal ribs (upper horizontal rib 31 and lower horizontal rib 32) and the vertical rib 33 is defined as angle β (see FIG. 2B). In the embodiment, the angle β is 90 degrees. The angle β is not limited to this, and is, for example, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, and 120 degrees. In addition, the angle β may be within a range between any two of the numerical values ​​exemplified here, and for example, the angle β can be defined as a value within a range of 60 degrees or more and 120 degrees or less. This effectively promotes the deformation of the container body 1, and effectively suppresses the occurrence of differences in the dischargeability of the content liquid depending on the amount of the content liquid.

[0020] The width in the front-rear direction of the first surface portion 21 (width in a direction parallel to the short-side axis y) can be defined as an angle based on the center O. The formation range α1 of the first surface portion 21 (see FIG. 4) is about 110 degrees at the upper end of the first surface portion 21, and about 104 degrees at the lower end of the first surface portion 21. In the embodiment, the value of the formation range α1 of the first surface portion 21 gradually increases toward the top. That is, in the embodiment, the formation range α1 of the first surface portion 21 is in a range of about 104 degrees (lower limit) or more and about 110 degrees (upper limit) or less. The formation range α1 is not limited to this.

[0021] For example, the lower limit of the formation range α1 can be, for example, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, or 110 degrees. Furthermore, the upper limit of the formation range α1 can be set to, for example, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, or 140 degrees. The value of the formation range α1 of the first surface portion 21 may be constant in the vertical direction of the first surface portion 21. In this case, the lower limit and upper limit can be any of the values ​​exemplified here.

[0022] 1-1-1-2.Second surface section 22 1A and 3, the second surface portion 22 is formed in a flat plate shape. The left and right ends of the second surface portion 22 are connected to the first surface portion 21, respectively, the upper end portion of the second surface portion 22 is connected to the shoulder portion 5, and the lower end portion of the second surface portion 22 is connected to the bottom surface portion 4. The forming range α2 of the second surface portion 22 is about 70 degrees at the upper end of the second surface portion 22, and about 76 degrees at the lower end of the second surface portion 22. In the embodiment, the value of the forming range α2 of the second surface portion 22 gradually increases toward the bottom. In the embodiment, the forming range α2 of the second surface portion 22 is in the range of about 70 degrees (lower limit) or more and about 76 degrees (upper limit) or less. The size of the formation range α2 is determined according to the size of the formation range α1. For example, when the formation range α1 is 110 degrees, the formation range α2 is obtained by ((total angle: 360 degrees)-(forming range α1 of one first surface portion 21: 110 degrees)-(forming range α1 of the other first surface portion 21: 110 degrees))÷2.

[0023] In the embodiment, the connection position (boundary position) between the second surface 22 and the first surface 21 is defined by a pair of dashed dotted lines B1 as shown in Fig. 2A. The outer surface of the container body 1 extends parallel to the longitudinal axis x at the left and right ends of the second surface 22, but starts to curve at the position of the dashed dotted line B1. In other words, when the outer surface of the container body 1 is viewed as if scanning in the circumferential direction of the container body 1, the position where the outer surface starts to curve corresponds to the connection position (boundary position) between the second surface 22 and the first surface 21.

[0024] 1-1-2. Mouth 3 As shown in Fig. 1A, the mouth 3 is formed in a cylindrical shape. An opening is formed in the mouth 3, and a plug into which, for example, an IV tube is inserted can be attached and detached. The liquid content in the container 100 is discharged to the outside through the mouth 3. In the embodiment, the connection position (boundary position) between the mouth 3 and the shoulder 5 is defined by a dashed dotted line B4 as shown in Fig. 2A. The outer surface of the container body 1 extends parallel to the vertical direction below the mouth 3, but starts to curve at the position of the dashed dotted line B4. In other words, when the outer surface of the container body 1 is viewed by scanning it downward, the position where the outer surface starts to curve corresponds to the connection position (boundary position) between the mouth 3 and the shoulder 5.

[0025] 1-1-3.Bottom part 4 1A and 1B, the bottom surface portion 4 is disposed at the lowermost portion of the container body 1, and a surface for placing the container body 1 in an upright state is formed on the bottom surface portion 4. In the embodiment, the connection position (boundary position) between the trunk portion 2 and the bottom surface portion 4 is defined by a dashed dotted line B2 as shown in FIG. The outer surface of the container body 1 extends parallel to the vertical direction at the bottom of the body 2, but starts to curve at the position of the dashed dotted line B2. In other words, when the outer surface of the container body 1 is viewed by scanning it downward, the position where the outer surface starts to curve corresponds to the connection position (boundary position) between the body 2 and the bottom part 4.

[0026] 1-1-3.Shoulder 5 As shown in Fig. 5, the shoulder portion 5 is formed so as to expand in diameter in the direction from the mouth portion 3 toward the body portion 2. An upper portion of the shoulder portion 5 is connected to the mouth portion 3, and a lower portion of the shoulder portion 5 is connected to the body portion 2. In the embodiment, the connection position (boundary position) between the body portion 2 and the shoulder portion 5 is defined by a dashed dotted line B3 as shown in Fig. 2A. The outer surface of the container body 1 extends parallel to the vertical direction at the top of the body 2, but starts to curve at the position of the dashed dotted line B3. In other words, when the outer surface of the container body 1 is viewed by scanning it in the upward direction, the position where the outer surface starts to curve corresponds to the connection position (boundary position) between the body 2 and the shoulder 5. In the PL cross section (cross section in FIG. 5), shoulder 5 forms an inclination angle of 90 degrees at the position of dashed line B4, and the inclination angle decreases as it moves downward from the position of dashed line B4, and after forming γ1 (see FIG. 5), the inclination angle increases again to form an inclination angle of 90 degrees at the position of dashed line B3. γ1 is the minimum value of the inclination angle of shoulder 5, and is about 30 degrees. Note that the PL cross section is a cross section of shoulder 5 that passes through the central axis z of mouth 3 and parting line PL.

[0027] 1-2. Thickness distribution of container body 1 If the difference between the thickness at the parting line PL (an example of the second thickness) and the thickness at the PL90 (an example of the first thickness) becomes too large, the deformation promoting effect of the rib 30 is hindered. For this reason, in the embodiment, as shown in Figures 6A to 6C, the value obtained by subtracting the thickness at the parting line PL from the thickness at the PL90 is 0.2 mm or less.

[0028] The thickness at the position of the parting line PL is the thickness at the height positions of measurement positions 1 to 9 (an example of the second portion) shown in FIG. 2A. The same is true for PL90, and the thickness at the position of PL90 is the thickness at the height positions of measurement positions 1 to 9 (an example of the first portion) shown in FIG. 2A. Note that, in the container body 1 in an upright state, the difference between the thicknesses at the measurement positions at the same height is 0.2 mm or less. For example, the thickness at the measurement position 3 on the parting line PL is compared with the thickness at the measurement position 3 on PL90. The same is true for the other measurement positions.

[0029] 1-3. Functions and Effects of the Container 100 According to the Embodiment Resin containers usually have a moderate degree of elasticity, so when the liquid content is discharged and the container is crushed, the container acts to return to its original shape. Therefore, as the liquid content is discharged from the container, the pressure difference (pressure difference between the inside and outside of the container) required to discharge and drip the liquid content becomes large, and as the liquid content is discharged from the container, the dripping speed of the liquid content decreases. However, the rib 30 of the container 100 according to the embodiment has a vertical rib 33 and horizontal ribs (upper horizontal rib 31 and lower horizontal rib 32) that are formed to extend in a predetermined angle range (40 degrees in the embodiment) in the circumferential direction of the body 2 and are connected to the vertical rib 33. Therefore, as shown in Figs. 7A to 7D and 8, deformation of the part of the container 100 at the height position of the vertical rib 33, deformation from the upper horizontal rib 31 to the shoulder part 5, and deformation from the lower horizontal rib 32 to the bottom part 4 are effectively promoted. This suppresses the container 100 from returning to its original shape even if the container 100 is crushed by discharging the liquid content. As a result, it is possible to suppress the occurrence of differences in the dischargeability of the liquid content depending on the amount of the liquid content of the container 100. In other words, it is possible to suppress the decrease in the dripping speed of the liquid content from the start of use to the end of use.

[0030] A label showing information about the medicinal liquid or the like is affixed to the first surface 21. Here, in the container body 1, the ribs 30 are formed only on the second surface 22, and the ribs 30 are not formed on the first surface 21. Therefore, the configuration of the container 100 can prevent the label from peeling off, breaking, being scratched, and the like.

[0031] As shown in Figs. 7D and 8, the body portion 2 of the container 100 according to the embodiment collapses entirely, so that the container 100 can be made compact after use.

[0032] 2. Variations 2-1. Modification 1: Modification of shoulder portion 5 Container 100 according to Modification 1 shown in FIGS. 9A and 9B has a different shape of shoulder portion 5 from container 100 according to the embodiment. The inclination angle of the shoulder portion 5 of the container 100 according to the embodiment, when viewed by scanning from the top to the bottom of the shoulder portion 5, decreased from 90 degrees to a minimum value of approximately 30 degrees, and then increased again to 90 degrees.

[0033] The shoulder 5 of the container 100 of the first modification has a more angular shape (anchored shoulder shape) than the shoulder 5 of the container 100 of the embodiment. Specifically, as shown in Fig. 10, the shoulder 5 of the container 100 according to the first modification has a portion 5t in the PL cross section where the angle γ2 between the tangent to the surface of the shoulder 5 and the horizontal line is 15 degrees or less. In Fig. 10, the angle γ2 is 15 degrees at the position of point P. At each position of the portion pt, the angle γ2 has a value between 0 degrees and 15 degrees. The inclination angle of the shoulder 5 of the container 100 according to the first modification, when viewed by scanning from the top to the bottom of the shoulder 5, decreases from 90 degrees to a minimum value of 0 degrees, and then increases again to 90 degrees. Note that in the first modification, the position where the minimum value is obtained is near the connection position between the body 2 and the shoulder 5.

[0034] 2B, in the container 100 according to the embodiment, the width H1 in the height direction of the body 2 at the position of the parting line PL (in the PL cross section) is about 3.2 times the width H2 in the height direction of the shoulder 5. In contrast, as shown in FIG. 9B, in the container 100 according to the first modification, the width H1 in the height direction of the body 2 at the position of the parting line PL (in the PL cross section) is about 4.8 times the width H2 in the height direction of the shoulder 5. In other words, the height position of the dashed dotted line B3 in the first modification is higher than the height position of the dashed dotted line B3 in the embodiment, so that the height dimension of the body 2 in the first modification is larger by that amount. Here, in the PL cross section, the width H1 in the height direction of the body 2 is preferably four or more times the width H2 in the height direction of the shoulder 5.

[0035] The shoulder portion 5 has a portion with a smaller diameter than the body portion 2, and is more rigid than the body portion 2. Here, in the container 100 of the first modification, the shoulder portion 5 has an angular shape, and the width H1 in the height direction of the body portion 2 in the PL cross section is four or more times the width H2 in the height direction of the shoulder portion 5. As a result, the container 100 of the first modification has a shape in which the region of the body portion 2 expands relative to the shoulder portion 5, and the region of the container 100 that is easily deformed expands accordingly. Therefore, the container 100 according to the first modification can further suppress the occurrence of differences in the dischargeability of the content liquid depending on the amount of the content liquid in the container 100. Note that, as shown in FIG. 11, even in the first modification, the body portion 2 is entirely crushed, so that the container 100 after use can be made compact.

[0036] 2-2. Modification 2: Modification of rib shape 12 shows a container 100 according to Modification 2, which has an angular shape for the shoulder portion 5 of Modification 1, and has the same configuration as Modification 1 with respect to the height direction width H1 of the body portion 2 and the height direction width H2 of the shoulder portion 5. The container 100 according to Modification 2 differs from the container 100 of Modification 1 in that it does not have a lower horizontal rib 32. The container body 1 may be inspected with a camera to determine whether it is a defective product. In this case, if the area of ​​the rib 30 is wide, there is a high possibility that a non-defective product will be erroneously determined to be defective. The container 100 according to the second modification does not have the lower horizontal rib 32, and therefore, it is possible to prevent the container 100 from being erroneously determined to be defective in the camera inspection process. As shown in FIG. 13, even in the second modification, the body portion 2 is entirely crushed, so that the container 100 can be made compact after use.

[0037] 2-3. Modification 3: Aspect ratio of container and aspect ratio of ribs In the embodiment, the condition has been described that it is preferable for the predetermined angle range 2θ of the transverse rib to be a value within the range of 20 degrees or more and 80 degrees or less. However, in addition to this condition, or instead of this condition, the transverse rib can also be specified using the following relational expression 1. Relationship equation 1: 0.40<(A / B)÷(C / D)<1.5 It is more preferable to use the following relational expression 2. Equation 2: 0.70<(A / B)÷(C / D)<1.2

[0038] Here, A to D are expressed as follows, as shown in FIG. 14A and FIG. 14B. A is the distance between the center of the upper transverse rib 31 and the center of the lower transverse rib 32. B is the length (circumferential length) of the horizontal ribs (upper horizontal rib 31 and lower horizontal rib 32) in the circumferential direction of the body 2. C is the height width of the body portion 2 at the position of the parting line PL. D is the width of the container body 1 in the front-rear direction. Also, various values ​​of A / B etc. are shown in FIG. 14C.

[0039] In addition to the above-mentioned relational formula 1 or 2, it is more preferable that the following relational formula 3 is satisfied. Equation 3: CD

[0040] The third modification also has the same functions and effects as the embodiment. ​

[0041] 3. Comparative Example 3-1. Comparative Example 1 15A to 16B does not have ribs 30. Furthermore, in Comparative Example 1, the length of the mouth portion 3 in the up-down direction is longer than those of the containers 100 of the embodiment and the first and second modifications. The graph in Figure 18 shows the results of a simulation in which the volume reduction of the container is regarded as the amount of drained liquid, and the amount of pressurization required to further crush the container from an arbitrary state of volume reduction to a smaller volume is calculated. The volume reduction can be rephrased as the amount of crushing of the container. In the graph of Fig. 18, the further to the left the characteristic line is located, the higher the drainage performance is. In other words, a container whose characteristic line is located to the left of the characteristic line of Comparative Example 1 has higher drainage performance than the container of Comparative Example 1. The characteristic lines of the embodiment and modified examples 1 and 2 are located to the left of the characteristic line of Comparative Example 1 over the entirety or most of the range. Also, for example, it can be seen that the container 100 of Comparative Example 1 requires a pressure of 0.092 atm to drip further content liquid after 105 ml of content liquid has been discharged. In contrast, the container 100 of the embodiment requires only a small pressure of 0.069 atm. Similarly, the container 100 of Modification 1 requires only 0.063 atm, and the container 100 of Modification 2 requires only 0.070 atm.

[0042] For example, when the pressurization amount in Comparative Example 1 in Fig. 18 is 0.069 atm, the reduction in the volume of the container is only about 92 ml. In other words, even though the container in Comparative Example 1 is not significantly crushed, a large amount of pressurization is required.

[0043] Furthermore, as shown in FIG. 17, in the container 100 of Comparative Example 1, when the liquid contents are discharged, the container 100 does not collapse as firmly as the containers 100 of the embodiment and the variants 1 and 2, and therefore the container 100 is less compact after use.

[0044] 3-2. Comparative Example 2 The ribs of the container of Comparative Example 2 (not shown) have an angle β of 135 degrees. That is, the upper horizontal rib 31 and the vertical rib 33 form a Y shape. The lower horizontal rib 32 and the vertical rib 33 form an inverted Y shape. The angle β is the angle between the horizontal ribs (upper horizontal rib 31 and lower horizontal rib 32) and the vertical rib 33. Otherwise, the container of Comparative Example 2 has the same configuration as the container 100 of the embodiment. The graph of FIG. 19 can be interpreted in the same way as FIG. 18. 19 shows the characteristics of the container 100 according to the embodiment in which the angle range 2θ is 40 degrees, the container 100 according to the embodiment in which the angle range 2θ is 80 degrees, and comparative examples 1 and 2. The container 100 according to the embodiment is superior to comparative example 1. Furthermore, the container 100 according to the embodiment is superior to comparative example 2, particularly in a situation in which the volume loss increases. [Explanation of symbols]

[0045] 1: Container body 2: Torso 3: Mouth 4: Bottom part 5:Shoulder 21:First surface part 22:Second surface part 30: Rib 31: Upper horizontal rib 32: Lower horizontal rib 33: Vertical ribs 100: Container B1 :Dash-dot line B2 :Dash-dot line B3: dashed line B4 :Dash-dot line O: Center PL: Parting line x: Longitudinal axis y : Short axis z: center axis

Claims

1. A container having a container body, The container body has a trunk portion, A linear rib is formed on the body portion, The rib has a vertical rib and a horizontal rib, The vertical rib is formed to extend in the up-down direction of the body portion and is formed on a parting line of the body portion, The horizontal rib is formed to extend over a predetermined angular range in the circumferential direction of the body portion and is connected to the vertical rib, The predetermined angle range is equal to or greater than 20 degrees and equal to or less than 80 degrees, The value obtained by subtracting the second thickness from the first thickness is 0.2 mm or less, The first thickness is a thickness of the first portion, The second thickness is a thickness of the second portion, The first and second portions are located at the same height in the upright state of the container body, The first portion is located at a position that is 90 degrees from the parting line in the circumferential direction of the body portion, The second portion is located on the parting line.

2. 2. The container of claim 1, The container body further has a mouth portion and a shoulder portion, an upper portion of the shoulder portion is connected to the mouth portion, and a lower portion of the shoulder portion is connected to the body portion; The shoulder portion is formed so as to increase in diameter in a direction from the mouth portion toward the body portion, the shoulder portion has a portion in which an angle between a tangent to a surface of the shoulder portion and a horizontal line is 15 degrees or less in a PL cross section; A container, wherein the PL cross section is a cross section of the shoulder portion passing through the central axis of the mouth portion and the parting line.

3. A container having a container body, The container body has a trunk portion, A linear rib is formed on the body portion, The rib has a vertical rib and a horizontal rib, The vertical rib is formed to extend in the up-down direction of the body portion and is formed on a parting line of the body portion, The horizontal rib is formed to extend over a predetermined angular range in the circumferential direction of the body portion and is connected to the vertical rib, The predetermined angle range is equal to or greater than 20 degrees and equal to or less than 80 degrees, The container body further has a mouth portion and a shoulder portion, an upper portion of the shoulder portion is connected to the mouth portion, and a lower portion of the shoulder portion is connected to the body portion; The shoulder portion is formed so as to increase in diameter in a direction from the mouth portion toward the body portion, the shoulder portion has a portion in which an angle between a tangent to a surface of the shoulder portion and a horizontal line is 15 degrees or less in a PL cross section; A container, wherein the PL cross section is a cross section of the shoulder portion passing through the central axis of the mouth portion and the parting line.

4. The container according to claim 2 or claim 3, A container, wherein in the PL cross section, the height direction width of the body portion is four or more times the height direction width of the shoulder portion.

5. A container according to any one of claims 1 to 4, The transverse rib has an upper transverse rib, The upper transverse rib is connected to an upper portion of the longitudinal rib.

6. A container according to any one of claims 1 to 5, The transverse rib has a lower transverse rib, The lower horizontal rib is connected to a lower portion of the longitudinal rib.

7. A container according to any one of claims 1 to 6, A container, wherein the angle between the vertical ribs and the horizontal ribs is 120 degrees or less.

8. A container according to any one of claims 1 to 7, The container, wherein the transverse ribs are formed symmetrically with respect to the longitudinal ribs.

9. A container according to any one of claims 1 to 8, A container, wherein the rib is formed so as to be recessed in a direction from an outer surface of the body portion toward an inner surface of the body portion.

10. A container according to any one of claims 1 to 9, The container is a flat container.

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