DESCRIPTION Title of Invention 5 BOTTLE Technical Field [0001] The present invention relates to a bottle. 10 Priority is claimed on Japanese Patent Application No. 2010-240945, filed October 27, 2010, and Japanese Patent Application No. 2010-264169, filed November 26, 20 10, the contents of which are incorporated herein by reference. Background Art [000 1a] The following discussion of the background to the invention is 15 intended to facilitate an understanding of the invention. However, it should be appreciated that the discussion is not an acknowledgement or admission that any aspect of the discussion was part of the common general knowledge as at the priority date of the application. [000 1b] 20 Throughout the description and claims of the specification, the word "comprise" and variations of the word, such as "comprising" and "comprises", is not intended to exclude other additives, components, integers or steps. [0002]A bottle formed of a synthetic resin material into a cylindrical shape with a bottom, a bottle in which a bottom wall portion of a bottom includes a ground contact 25 portion which is positioned at an outer circumferential edge portion, a rising peripheral 2 wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward, a movable wall portion which projects from an upper end portion of the rising peripheral wall portion to an inner side of the bottle radial direction, and a depressed peripheral wall portion which extends upward from an 5 inner end portion of the movable wall portion in the bottle radiation direction, and depressurization in the bottle is absorbed by causing the movable wall portion to revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward as disclosed in Patent Document 1, for example, is known by the Applicant. 10 Citation List Patent Document [0003] [Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2010-126184 15 Technical Problem [0004] According to the conventional bottle, however, there is a room for improvement of a performance of absorbing depressurization in the bottle. [0005] 20 Thus, the present invention was made in consideration of the above circumference, and it is desirable to provide a bottle capable of improving a performance of absorbing depressurization in the bottle. Summary of Invention [0006] 25 According to one form of the invention there is provided a bottle formed of a 3 synthetic resin material into a cylindrical shape with a bottom, a bottom wall portion of the bottom comprising: a ground contact portion which is positioned at an outer circumferential edge portion; 5 a rising peripheral wall portion which is connected to the ground contact portion from an inner side of a bottle radial direction and extends upward; an annular movable wall portion which protrudes from an upper end portion of the rising peripheral wall portion to the inner side of the bottle radial direction; and a depressed peripheral wall portion which extends upward from an inner end 10 portion of the movable wall portion in the bottle radial direction, wherein the movable wall portion is disposed so as to freely revolve about a connecting portion with the rising peripheral wall portion so as to move the depressed peripheral wall portion upward, the upper end portion of the rising peripheral wall portion moves to the outer side 15 in the bottle radial direction when the moveable wall portion revolves about the connecting portion, the rising peripheral wall portion extends so as to be gradually reduced in diameter to the inner side of the bottle radial direction from the ground contact portion to the connecting portion with the movable wall portion, and an inclination angle thereof is 20 an angle of equal to or greater than 00 and less than 200 with respect to a bottle axis, a height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is equal to or greater than 3.5 mm and less than or equal to 7.5 mm, the moveable wall portion extends so as to gradually incline downward from the 25 connecting portion with the rising peripheral wall portion to the inner side of the bottle 3a radial direction, and an angle between the moveable wall portion and the rising peripheral wall portion is equal to or greater than 600 and less than or equal to 850. [0007] 5 According to the bottle of the embodiment of the present invention, it is possible to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle. Incidentally, the movable wall portion is considered to revolve about the connecting portion with the rising peripheral wall portion due to an increase in diameter caused by 10 the upper end portion of the rising peripheral wall portion moving to the outer side in the bottle radial direction. [0008] Here, according to the bottle of the embodiment of the present invention, the rising peripheral wall portion inclines to the inner side of the bottle radial direction 15 within the above inclination angle range with respect to the bottle axis when approaching the connecting portion with the movable wall portion, and the height from the ground 4 contact portion to the connecting portion is set within the above height range. Therefore, the rising peripheral wall portion is considered to be designed such that the upper end portion as the connecting portion with the movable portion flexibly and easily moves in the bottle radial direction from the ground contact portion as a base point and the upper 5 end portion thus easily moves to the outer side of the bottle radial direction during the depressurization. Accordingly, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly revolve and to thereby improve the performance of absorbing depressurization. 10 [0009] In addition, it is considered that the upper end portion of the rising peripheral wall portion does not easily move in the bottle radial direction while the ground contact portion positioned on a side of a lower end portion of the rising peripheral wall portion easily moves in the bottle radial direction when the inclination angle of the rising 15 peripheral wall portion is equal to or greater than 200 and the height from the ground contact portion to the connecting portion between the rising peripheral wall portion and the movable wall portion is less than 3.5 mm. Therefore, the ground contact portion easily moves to the further outer side than the upper end portion of the rising peripheral wall portion in the bottle radial direction during the depressurization, and there is a 20 concern that the revolving motion of the movable wall portion is inhibited. [0010] This paragraph is intentionally left blank. [0011] In such a case, since the angle between the movable wall portion and the rising 25 peripheral wall portion is within the above range, the aforementioned advantageous 5 effect can be significantly displayed, that is, it is possible to cause the movable wall portion to sensitively follow variations in the inner pressure in the bottle and flexibly rotate and to thereby improve the performance of absorbing depressurization. In addition, since the movable wall portion extends so as to gradually incline downward 5 from the connecting portion with the rising peripheral wall portion to the inner side of the bottle radial direction, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capacity immediately after the filling by increasing the volume of the bottle and to thereby further improve the performance of absorbing 10 depressurization. [0012] In the bottle according to the embodiment of the present invention, the movable wall portion extends so as to gradually incline downward from an outer end portion connected to the rising peripheral wall portion to an inner end portion connected to the 15 depressed peripheral wall portion, and the height from the ground contact portion to the inner end portion of the movable wall portion is 45% or less of the height from the ground contact portion to the outer end portion of the movable wall portion. [0013] According to the bottle of the embodiment of the present invention, it is possible 20 to absorb depressurization by moving the depressed peripheral wall portion upward by revolving the movable wall portion during the depressurization in the bottle. Particularly, since the movable wall portion extends so as to gradually incline downward from the outer end portion to the inner end portion and the height from the ground contact portion to the inner end portion is 45% or less of the height from the 25 ground contact portion to the outer end portion to secure a great height difference 6 between the outer end portion and the inner end portion, it is easy to revolve the movable wall portion downward during the filling of the bottle with a substance. Therefore, it is possible to increase the depressurization absorbing capability immediately after the filling by increasing the volume of the bottle and to thereby improve the performance of 5 absorbing depressurization. [0014] In the bottle according to the embodiment of the present invention, the height of the inner end potion of the movable wall portion from the ground contact portion may be equal to or greater than 2 mm. 10 [0015] In such a case, the inner end portion does not easily project further downward than the ground contact portion when the movable wall portion revolves downward during the filling of the content, and it is possible to easily avoid contact with the ground contact surface. Accordingly, it is possible to reliably perform the filling operation while 15 suppressing the projection of the inner end portion of the movable wall portion even in the case of high-temperature filling, for example. Advantageous Effects of Invention [0016] According to a bottle of an embodiment of the present invention, it is possible to 20 improve the performance of absorbing depressurization in the bottle. Brief Description of Drawings 7 [017] FIG I is a side view of a bottle according To an embodiment ofthe preset invention. FIG2 is a botom view ofthe bottle shown in FIG. I. 5 FIG 3 is a crosssectionalvew of the bottletaken along the line A-A shown in FIG 2. FIG 4 is a cross-sectional view of the bottle taken along the line B-B shown in FIG 5 is a hotom view of a bottle according to a modified example of the 10 embodiment ofthe present invention. FKI 6 is a cross-sectional view of the bottle taken along the line - shown in FIG 5. FI. 7 is a side view ofa bAttle according an emnbodiment ofthe present invention. 15 FIG X is a bottom vie of the bottle shown in IG7. FIG 9 is a cross-sectional view of the bottle ake along the line A- shown in FIG S. FI 10 is a bottom view of a botle ageording to a modified example of the embodiment of the present invention 20 FIG II is a crosectional vi od the bottle taken along the line B-B shown in FIG 10. Description of Embodiments Hereinafte, a description will be given of a bottle according to an einbodirnent 25 of the present invention with reference Ct tie draring.a 8 A bottle 1 according to the embodiment includes a Iouth portion Il a shoulder portion 12 a body portion 1 and a bottom 14 as shown in FIGS. 1 to4 and is substantially configured suchthatrthese components are sequentially provided in this order while the respective center axi lines are positioned on a common axis. 5 [00191 Hreinaner the common ais is referred a a botIle axs 09 the side of the mouth portion T 1 in the direction ofthe bottle axis 0 is referred to as an upper siden and the side of the bottom 14 is referred to as a loer side In addition; a diction which is perpendicularto the bottle axis 0 is referred to as a bottle radial direction, and a direinn 10 revolving abou the battle axis 0 is referred to as a bottle circuferential direction. In addition the ole I is formed by blow molding apre-form which has been formed into a cylindrical shape with a bottom by injection molding and is integaily formed of a syNthetic resin material In addion a cap which is not shown in the drawings is threadably mounded to the mouth portion 11. Moreovethe horizontal 15 crossasectional shapes of the mud portion 11. the hAuider portion 12. the body portion 13, and the bottom 14 which are perpendicular to the bottle axis 0 are all circularin shape. A first annular concave groove 15 is continuously formed over h entire 2 circumference Of pa between the shouerportion 12 and the body portion l3 'the body portion 13 is formed into a cylindrical shape to have a smaller diameter than the diameters of thed ower end portion ofthe shoulder portion 1nd the heel portion 17 of the bottom 14 which will be described later Aplurality -f second annular conea grooves 6 are foned on theibdy poition 13 at intervals in the 25 direction of the bttle axis 0C In the example shown in the drawing, four sound annular cncave grooves 1a6are i f ed at equal intervals in the'directinof the battle axis 0. Each of the second annular concave grooves 16 is a groove portion which is ontinuously formed over the entire circumference ofthe body potin 13 [0021] 5 TheI ottom 14. formed nto a up shape and includes a heel portion 17 with an. upper and opening portion which iN conneced to he lowered opening portion ofthe body portion 13 and a bottom wall portion 19 which blocks the lower end opening portion of the heel portion 17 and includes aground contact portion 18 at the outer circumferential edge portion. 10 0022] In theheel portion 17. a heAl lower end portion which is connected to the ground contact portion 18 from the outer side ofthe bottle radial direction is formed to have a smaller diameter tnr the diameter ofan upper heel potion 28 connectedtohe heel lower end porion 27 fromthe upper side. 15 Both the upper heel portion 28 and the lower end portion ofth shoulder portion 12 have he maximum outer diameter in the bottle 1. [0023] In addition. the diameter of a coupling part 29 between the heel lower end portion 27 and the upper heel portion 28 is gradually reduced from the upper side to the 20 lower side, and thus, the diameter of the heel lower end portion 27 is smaller than the diameter of the upper heel portion 28. Athird annutlar concave groove 20 with approxmately the same depth as that of the aboe second annular concave groove 16 i continuously fanned over the entire circumference of the upper heel portion 28. [0024] 25 As shown in FIG 3, the bottom wali potion 19 includes arising peripheral wall 10 potion 21 connected to the ground coract prion 18from the inner side of the bottle radial direction and extending upward, annular movable wal portion 22 -projecting from the upper end portion of the rising peripheral wall poion 21 to theinner side ofthe borne radial direction, anda depressed peripheralwall portion 23 extending upward from 5 the innerend portion of the movablevali portion 22 in thebottleadia direction. [(025] The movable wall portion 22 is formed into curved surface shape which protmdes downward and extands so kto gradually incline e downward froi theouer side to the inner side ofthe botle radial direction. The movable all portion 22 and the 10 rising peripheral wall portion 21 are coupled via a curvedsurface portion which protrudes upward. Addition the noable wall portion 22 is designed to be fredy revolved about the curved surface potion (the connecting part ith the rising peripheral wall portion 21) 25 so as to cause the depressed priperal wall portion 23 to imov upward. 15 In addition an annular bottom (the movaile wai portion 22 and the depressed peripheral wall portion 23) formed between the upper end ofthe rising peripheral wall portion 21 and an outer edge of an apex al 24 disposed above the upper end of the riing peripheral wall portion 21 is formedinto a substantially V shape(substantialy V shape or substantially L shape) in a vertical half crossWsectional view so as to expand 20 downward over the entire circumference. [0026] he diameter oftheising peripheral wall portion 21 in gradual reduced from the lower side to the upper side Specifica, the rising perpheral wall portion 21 extends s as to gradually inAlin to thinner side of their bottl radial direction fromnhe 25 ground contact portion I 8 to the curved face portio25 which is a connecing portion I I with te movabeall portion 422 and the inflation angle 1" isetto 1 for eample, within an angularange of equal to or greater than-0* and less than 200 with respect to the bottle axis 0. 3In addition height from the ground contat portion 1 to the curved surface portion 2Iset nenfor example, within a heightrange oqual to or greater than 3rm n and sthan or equal to 75 mm this ebiment Moreovean angle 02 beweenhmovabe wlportion 22 and the rising peripheral wa1portion 21 is se to 730, for example, within an angular range of equal to or greater than 6W and lessthan or 10 equal to 80 [0028] As shown in FIGS, 2 and 4,a purality ofbri 40 are radially disposed about the bottl axis ithebotl wall portion 22. That ithe respectivribs 40e dispod t uniform interval in the botalercuferenta direction. 15 in the example shown In he drawings the rib 40 arv configured such ihat a plurality of concave portins 49a depressed upward in the curved surface shapes intermittentland lineary extend along the bottle radial direction In so doing, the ribs 40 have a wave form in a vertical crosssectional view along the bottle radial direction. [0029] 20 The respected concae portions4a are formed into a sm ie nd a saee share and arc arranged at equal intervals altng the lbotl radial direction. ladliion, he espee positions at whiA the plunaity of aveportions 40aa dspoed, in the bottle radiad direction are the san each ofthe pluraltwv of'ribs 40. In addition concave portion 40a at the outeamost portion in the bottle radial 12 Direction among the pluraty ofoncave portions 40a intherespecve ribs 40 is proximatetIo the curved surface portion 2f5 fom the inner side of the bottle radial direction, and a concave portion 4a at the innermost posio in the bottleradial direction is proximate to he depressed peripheral wall portion 23 from the outer side of 5 the ottle radial direction. [0030] The depressed peripheral wall portion 23is coaxial disposed with the bottle axis 0 as shown in FG 3, and isfrmed into a circular shape in the horizontal cross-secional view such thatthe diameter thereof graduallyincreases fromnthe upper 10 side tothe lower side. A dis-shaped ape wall 24 which is coaxiallyarranged with the bottle axis 0 is connected to the upper end portion of the depressed peripheral wall potion 23, and the depressed peripheral wall portion 23 and the apex wall 24 forna cylindrical shape with n apex as a whole. The depressed peripheral wall portion 23 is formed into a curvedsurface shape 15 hih protrudes to the inneside of the bAttle radial directing. and the upper end portion includes a curved vwIl portion 23a which is sequentially provided at the outer circumferential edge portion of the apexNall4. Theloner end potion of the curved wall portion 23a is sequentallyprovided at the inner end portion of the movable wail portion 22 in the bottle radial diretion via the curved surface portion 26 which protrudes 20 downward. [0031] ithe inside of the bottleIconfiguredas described above is depressurized, the movable wall portion 22 revolves upward about the curved surface portion 25 of the bottomr"all portion 19 such that the movabe iall portion22 noves to lif the depressed 25 peripheral Wall portion 23 upward. That is it s posble to absorb variations ir he 1A imer pressure (depressurnation) in tihe otle I by actively deforming the bottom wall portion 19 of the bottle 1 during depressurization, [0032] Incidentall. it is considered that the movement of the upper end portion ofthe 5 ising peripheral portion 21 to tIh outer side of the bottle radiadirection causes the lovable wall portion 22 to ewilve about the cured surface portion 25 which is a connecting portion with the rising peripheral portion 21 during depressurizaton 1ee, in the bottIe I according to the enbodinent, the rising peripheral wal portion inclines to the inner side of the botle radial direction at the inclination angle 10 01 with respect 1o the bottle axis 0 as the rising peripheral wall portion 21 approaches the curved surface portin 25, theoheight from the gound contact portion18to the curved surface portion 25 is set to the abovheight l, and further, the angle between the rising peripheral wall portion 21 and the movable wall portion 22 is set to the above angle 02 15 [0033] Therefre, it is considered that the upper end portion of therising peripheral xall portion 21 which is the connecting portion with the movable wail portion 22., can asily and flexiblyuovein the bottle radial direction from the ground contact portion 1 as a based point and therefore, the upper end portion can easily moves to the outer side 20 of the botleradial direction durtg the depressurization, Accordingly, is possible to cause the movable wall portion 22 to sensitively follow the Variations in the inner pressure in the bottle I and flexibly revolve andenhane the performance of absorbing depressuilzation., Inaddition, since the movable wall portion 22 extends so as to gradually incline 25 downward fWrthe curved surface portion 25 as the connecting portion with the riing 14 peripheral all prion 21 to the inner side ofthe botte radial direton, is easyt cause the movable wall portion .2to revolve downward during filling of the bottle with a substance Therefore it i possible to enhance the depressurization absorbing capacity immediately after the tilling by increasing a volume in the bottle I and tothereby uhrther 5 easily improve the performance of sorbing depressurization. [0034] In addition-since the plurality ofribs 40 are formed on the movable portion 22 o the bottom vail portion 19. it is possible to increase a pressure receiving area by increasing the surkee area oCthe movable wall portion 22 and to rapidly deform the 10 movable wal portion 22 according to nations in the inner pressure in the bottle 1. 10035] The bottle I according to the embodiment is suitable for a bottle with a volume o! lter or less and ith a ground contact diameter of3 85 m r lss 10036] 15 in addition, the technical scope ofthe present invention is not limited to the embodiment, and various modifications can be made without departing komthe gist of the present invention. 100371] For example, although the ribs 40 intermittently and radially extend in theabove 20 embodiment the present invention is not limited thereto, and the ribs 40 rna continuously extend or extend while curved In addition, the design ofthe shape and the size of the Convave portions 40a can be appropratelyehanged. Moreover. the ribs 40 arc not essentialand may not be provided,. [0038] 25 Inauddition, a oncave and cnex portion 41 may beforrmed over the entire 15 circumerencedofthe rising peripheral wall portion an shown in FIGS. 5 and 6. In addition, the concave and convex portion 41 is configured by disposing a plurality of convexgprtions 41a formedito curved surfaceshape Ahich protrude to the inner side of the bottle radial diredion at intervals in the bottle cirAumferential direction. 5 By forming eHi concave and conv portion 41 as descdbed above feeling of tncongruitisnot easily given when the bottom 14 of the bfottl filled with content is viewed since light which is incident on the ising peripheral wall portion 21is diffusely reflected bythe conav and coax portion 41 or the conec and convex pArtion 41 is also filled with the substance in the bottle 1. tor example. 10 [0039] Although the angle 02 between the rising peripheral wail portion 21 and i movable mall portion 22 is configured to be within an angua range equal t or greater than 60 and less than or equal to 85" in the embodiment, the present invention is not limited to the angular range. For example, the movable wall portion2may be 15 appropriately changed so as to project in parallel with the bottle radialdirection or incline upward, for example. or ay he appropriately3changed as he formed into a planer shape or a concave cuved surface shape which is depressed upward. IHowever, it is preferable tat the angle 2 between the rsing peripheral wai portion 21 and the mov able "all portion 22 be within the angularrange of not equal to or 20 great than 600 and less than r equal to 850and that themovlle wall portion 22incine downward as in the embodiment. In doing, the revolution property ofthe lovable wall portion 22 is enhanced, and it is easy to improve Ithe perrmance ofabsorbing depressurization 100401 16 Although the rising peripheral wall portion 21 and the unable wall portion 22 are connected to each other via the curved surface portion 25 in theembodimenta configuration is also applicable i which an annular conaveportion which is depresed upward with respect to a virtual lineextendedto the outer side of the bottle radial 5 direction along theline ofthe sdriee shageofthe movablexalfoion 22 i formed at theconneting portion and the moable wail portion 22 freel elves about the annular concave portion. In such a case, it is possible to expect a high hinge effect by providing flexibilityto the outer end portion ofther notable wall portion 22in the radial direction to therebycausehe movable wall portion 22to further sensitivelyfollow the variaions 10 in the inner pre en the bottle I and fleibly deform the unable wal portion 22 and further improve the performance of absorbing depressurization in the bottle I In addition.even in the case in which die annular concave groove is formed it is preferable that the angle between the rising peripeal all portion 21 and the movable wall portion 2 more specifically the angle 02 between the rising peripheralwall portion 15 21 and the virtuAl line be within the angular range of equal to or greater than 60 and lass than or equal to 85 (0041] In addition alhough each ofthe horizontal cross-sectional shapes of the shoulder poion 12, the body portion 13. and the bottom 14.hih is perpendicular to 20 the bottle axis Q is a circularshape in the embodiment. he horizontal cross-ectional shape is not limited Ihereto and may be appropriately changed to a polgonal shape or the like for example. [0042] In addition, the synthetic resn material forming the bottle i niav be 25 appropriately changed to polyethylene terephthalate, polyethylene naphthalate 17 amorphous polyester a hend material thereof Fuhermoethebattle may foaed into a laminated structure with an intermediate layer as well as a single layer structure. i additionexamples fthe interndiate layer inlude a layerformed ofa resin material wih a gas banrier property, a layer fnned of' a recycled material, a layer 5 formed of a redin material with an oxygen absoption property, and the ike [(043] (Examples) ext description will he givan of n example of a test (nalysisfor observing how a relationship between depressurization intensity (kPa) and depressurizatin 10 absorbing volume (ml) changes when the inclination angle 01 of the rising peripheral wali portion 21. and the height T from the ground contact portion 18 to the curved sa tacc portion 2 are respectivdly clhanged. n addition, thetestwas performed us ing the hottle I shown in IGS. I to 4, in which the plurality ofribs 40 were formed i the notable wall portion 2 15 100441 Thetest was performed by preparing a total offour patterns, namely a first pattern with the inclination angle of 5and with the heightTo3.mm, a second pttern with theinclinationangle 0 O f104 and xith the height ' f 3-5 nun, a third pattern with the inclination angle 01 of 150 and with the height T of 3. mnn and a 20 comparison pattern with the inelinion angle 01 of 20* and the height T of 3.5 mm, [00451 As a rslt. it was oninrmed that a depressurizationabsorbing capacity increased in an Uit stage inwich aniprease irdhe depressurizaton intensity wa started in any of the four patterns. This is considered to be because the entire bottom 18 ivaIl portion 1 9 moned upward due to the depressrizatio in the bottle L Ioweve itwas confirmed that the depressurization absorbing capacity steeply increased at later timing at which the depresurization intensity further increased and reached about 10 (kLPa) in the first to third patterns This is considered to because the 5 ovable wail portion 22 smoothly revolved and nersey defamed and the depressed perpheralwall portion 23 was thusn od upward sinc the inclination angle 01 was Wthin the angularrange of egual to or eater than 0" and lessthan 200 and the height r was in the height range of equal to or heater thanm5 m and less than or equal to .5 nuti. 10 On the other hand, the steep increase phenomenon of the depressurization absorbing capacity due to the inverse deformation of the movable wall portion 22 was not observed in the case of the comparison pattern even when the depressurization intensity was further increased [0046]| 15 In addition. it was similarly confirmed that the depressurization absorbing capacity steeply increased at the timing at which the depressurization intensity reahed about 10 (kPa) even 'hen the height T was se to 5.0 mm instead of'3.5 mn and the inclination angl 01 vas set to 5 1 0*, 15 and 204 in the fist to third patterns. Furtherniore the same change was counnned een when theheight T was set to 20 T nim and the inclination angle 01 was set to 5"* 10*, 1 and 20 In addition, the steep increase phenomenon of the depressurization absorbing capacity was observed in the above height range even when the incnation angle 01 was set to 00. However, there is a problem that i is difficult to shape the bottle ifthe incination angle 01 is set to less than 04 (negative).
19 [(1047] Based on the above it was confirmed that the movable wail portion 22 was flexibly deformed and the performance of absorbing depressuriation was improved by getting the inclination angie0 ofthe ring periher -all portion 22 within he angular 5 range of equal to or greater than 0) to less than 2 ndsettingthe height Tfrom the groundcontact portion 18 to the cuned surface portion 25ithin the heightrangeof equal to or greater than 3.5 mm to less than or equal to 75 m. [00481] Hereinafter; a desciption Wii he given of a bottle according to a second 10 embodiment-ofthe present inventionreferring to FIGS 7 to 9. In the description of the second embodimcnt;the sae eference numerals as those in thedfirst embodiment will be used for the same configuration as those in the frst embodiment and a description thereof will be omitted here. [0049] 15 As shown in FIG 7, the bottom 140 ofthe bottle 10 aco riding to the embodiment is formed int a cup shape and iudesa heel portion 170 at which an upper end opening portion ofthe botom 140i connectedto the lower end opening portion o the body portion 13 and a botton wal portion 190 which blocks the lower and opening portion ofthe heel portion 170 and includes a ground contact portion 1SO atthe 20 outer clircumferential edge portion. 100501 In the heel portion 170, a heel lower end portion 270 which is connected to the g-ound contat portion Igfrom the outer side of the botte radial direction is formed to have a smaller diameter than the diameter of an upper heel portion 280 connected to the 25 heel lower end portion 270 from the pper side.
20 ottbhe upper heel portion 280 and both end portionsothe bodyportion 13n the direction ofthe bottle axis 0 have the maximum outer diameter in the bottle 1 0. (0051] In addition, the diameter of a couping part 290 betweenthe heel lower end 5 portion 270 and the uppenheel ortion 280 i gradually reduced fro the upper Ade to the lwersde, and tius the diameter ofhe heel lower end potion 20 is sialler than the diameter ofthe upper heel portion 280. A fourth annular concave groove 310 Ath approximately the sa e depth as that of he third arnular concav groov 20 is continuously forced over the entireJcircumference of the upper heel portion 280 10 [0052] A shown in Pi 9, thebottm nwall potion 190 includes arising peripheral wall portion20 connected to the ground contact portion 180 fom the inner side of the bottle radial direction and extending upward, an annadar movable vall portio220 projecting from the upper end portion of the rising peripheral wall portion 210 to the 15 inner side of the bottle radial direction 5 and a depressed peripheral wall portion 230 extending upward fromthe inner side of the novable wall portion 220 in the bottle radial dection. 100531 The ground contact portion 180 is in annular line contact, fr example, with a 20 ground contact surface (3 The diarneter of the rising peripheral wall portion 210 is gradually reduced from the lower side to the upper side. Thenmovable wall portion 220 is formed into a curved surface shape which protrudes downward, and extends soas to gradually incline downward from the outer end portion connected to theiing pepheral wall portion 2 10 to the inner and potlion 25 conneted to the depressed peripheral wall portion 230 21 [0054] hike enmbodimne the movable wall portion 220 and the rising peripheral wall portion 210 are coupled to each other via a cutret surface portion 250 which irtrudes; upward, and the movable wal portion 220 and the depressed peripheral wall portion 230 5 are coupled to eac other va a curved surface portion 260 which rotrudes downward. Therdore the cuved surface portion 250 function as an outer end prton ofte movable wall podion 220 and the curved surface portion 260 functions as an inner end portion of the movable wail portion 220. In addition the movable wall portion 220 is designed to reely revolve about the 10 curved surface portion 250., icis the outer end portion of the movable vall portion 220. so as to move the depressed peripheral wall portion 230 upward, [00551 In addition,he curved surface portion 250,wihihe outer end portion ofthe movable wail portion 220 and the curbed surface portion 260 whicisthe inner end 15 portion of the movable ai portion 220 are separate from the ground contact surface C Onthis occasion a height H1 from the ground contact surface G along which the gound intact ration 180 is in contact with the ground to the cerface portion 260, MW is the inner end potion of the movable wall portion 22, is set to or greater than 2 mm which is 45% or less of a height H2 from the around contact surface G to the 20 curved surface portion 250 which is the other end portion of the movablewall portion 220. [0056] The depressed peripheral wall portion 230 is sbaxially disposed with the bottle axis 0 and is formed into multiple stages such that the diameterthereofr dually 25 inreases from the upper side tobh lower side. A disc-shaped apex wal 240 which is 2 coaxially arranged h the boteds ais 0 connected to the tpper end portion of the depressed peripheral wail portion 230 and the depressed peripheral vall portion 230 and the apex al 240 forMn a cylindrial shapeith an apex as a whole [0057] 5 The depressed epperal wail portion 230 according to the enbodhnent inidealower cylindrical portion 230a with a diameter which gradany decreases from the inner end porion ofthe movable wall portion 220 in the bottle radial direction to the upper side, an upper cylindical portion33bxhich includes an upper end potion coupled to the outer circumferential edge portion ohe apexwall 240 the diameter of 10 hich gradually increases when appraching downward, which formed into a cubed surface shape protruding downward. and a stag portion 230c which couples both the cylindrcal portions 230a and 23Gb. and the depressed peripheral wall portion 230 is formed into a twostage cylindrical shape [0058] 15 Theler cylindrical portion 230a is formed int a ctular shape in the horizontal cross-sectional view and is coupled to the movable wl portion 220 via the cuved surface portion 260, Projecting part.230d which project to theinner side of the bottle radial direction are forced in the upper cylindrical portion 23Gb The projecting porIons 230d are formed over the entire length ofthe upper cylindrical portion 23b in. 20 dhe direction of the boule axis othet than theuper end portion, and a plurality of projecing portions 230d are sequenally formed in the bottle circumferential direction as shown in FIG & In the example shown in the drawing projecting portions 230d which are adjacent in the bottle circumferential direction are aranged at intervals in the bottle 25 circumferental direction 23 [(1059] hadditionhe horizontal cross-sectional shape ofthe upper cylindrical portion 230b is deforned from a polygonal shape to a crular shape from the lower side to the upper side by forming the projecting portions 230d, and the horizontal crosssectional 5 shape of tei upper cylindrical poriti 230h at ti upper end portions a cirular shape. At a part at which the hoontal cros-sectional shape is a odygonal shape in the upper cylindrical portion 230b. the projecting portions 230d correspond to sides of the polygonal shape.and interposed parts 230e positioned between adjaeert projecting portions 230d in the bottom circumferential direction correspond to corners ofthe 10 polygonal shape. Although a case in which the polygonalshape is a substantially equilateral triangle is exemplified in the drawing the present invention is not Alimited to the case [0060] If the inside of the bottle 10 configured as described above is depressurized the 15 movable all portion 220 reolvs upward about the curved surface portion 250 such that the movable wall portion 220 moves to lif he depressed peripheral wall portion 230 upward. That is i.t is possible to absorb variations in the innerpressure (dpressurization) in the bottle 10 by actively deforming the bottom wall potion 190 of the bottle 10 during the depressurization. 20 [M61] Particularly since the movable wall portion 220 extends so as to gradually incline downward fmi the cured surface portion 250. hich the outer end portion of the movable wall portion20, to the curved surface porion 260 which is the inner end portion old te movablewal portion 220, and te height Il from the ground contact 25 surface (to the curved surfme portion 260 which is the inner end portion ofte 24 miovable wall portion 2.20,is 45% or lss of th height 1-12 from the ground contact surface GIo the curved surface portion 250, which is the outer end portion of the nmovable wail portion 220, to secure a lrge height difference, it is easy to cause these movable wall portion 220to revoke downward during filling of content. Therefbre it 5is possible to enhance the depressurization absoirbing capacity immnediately after dhet tilling by increasing the volume of the bottle 10 and t thereby improve the performance of absorbing depressurization [0062| Furthermore, inee the curved surtace portion 260. which is the inner end 10 portion of the movablewail portion 22c is separatefrom the ground contact surface C by equal to or greater than 2 mm. the curved sufce portion 260 does not easilyprojct further downward than the ground contact portion 180 when the movable wail portion 220 revolves downward during tilling of content, and contact with the ground contact surface can be easily avoided. Accordingly itis possible to reliably perform the 15 filling operationwhile suppressing the projection ofthe curvedsurface portion 260pen inrthe case of a high-temperaturedtilling. 100631 Although a case in which the cured surface portion 20, hich is the inner end portion of the movable wail portion 220, is ihe lowermost end potion which is the closest 20 to the ground contact su-face C in the movable wall portion 220 is exemnpliied inithe embodiment a case in which a substantially intermnediate part of the boftie radial direction correspondsto the lowermost end portion can be also considered depending on the shape of the moable wall portion 220. In such a case, the height to the lowermost portion is 1, 25 [0064] 25 In addition, thhbottle 10 according to the embodiment i S suiable for a bttle with a volume of I liter or less and with a ground contact diameter of85 mm or less 7 which issued when filling the bottle with the substance at 75"C or lower (more specificallya temperature range from 60 0 C to 75 0 C). 5 [00651 in addition, the techical scope of the present ivention is nt limited to the embodiment; and various modifications can be made without departng from the gist of the presentingention [066] 10 As shown in FIGS.10 and 11. a plurality of ribs 400 may be radially formed about the botte is Q ithe bottle wall portion 220 in th embodiment That is the respective ribs 400 are disposed at uniform intervals in the bottle circumfrential direction. In the example shown in the drawings he ribs 400 are configured such that a 15 plurality ofconcave portions 400a depressed upward in the curved surface shapes internitently and linearly extend along the bottle radial directioand he ribs 400 are formed into a wave form in a verticaerosssectional view along the botie radial direction, In addition the respetive concave portions 400a are formed into the sarm size and the same shape and are arranged at equal intervals along the botle radial 20 direction. Ina addition the respective positions, at which thepluralityof cnave portions 40a are disposed in the bottle radial direction areihe same in each of the plurality of ribs 400. [0067] By forming the Plurality of ribs 400 in the movable portion 220 as described 25 abo it is possible to increase a pressure receiving area by increasing a surface area of 26 the movable wall portion 20 and to thereby rapidly deforndbemoable wall porton 220 according toMvariations in the inner pressure in the bottle 10. [0068] Furthermore a concaveand conv portion 410 may be formed over the entire 5 circunierenceof the risingperipheral wall portion 210 as shownin IGS 10 and 1. i ad the concave and oex portion 410 is configured by disposing a pluralhy of convex portions 410a formed into curved surface shapes which protrude to the inner side ofthe bottle radid direction at intervalsin the bottle circumferential direction. Ly forcing the concave and convex portion 410 as derived above, feeling of 10 incongrty i not asly given when the bNttom 140 tthe bottle 10 fied ith potent is viewed since light which is incident on he rising peripheral wall portionl 210 is diffusely reflected by the concave and convex portion 410 or the concave and convex portion 410 is as filled with the substance in hie bottle 10, for example. [0069] 15 In the embodient the rising peripheral wall portion 210 nay be appropriately changed so as to extend in parallel with he direction ofthe bottle axis 0 for example, in addition the movabe vall portion 220 uay be apopriately changed so a tobe formed into a planar shape or a coneave curved surface shape which is depressed upwardl for example. 20 007| Although the upper cylindrical portion 23Gh is formed into a curved surface shape which protrudes downward in this embodiment the preent invention is not limited to this shape. In addition, the aacentprojeeting portions 230d in the bottle circumferential 25 direction are arranged at interval n the bottle cicumferentigi direction in this 27 embodiment, however the present inaction is riot limited thereto, and Ith projecting pori 230d may be arranged without any interval in the bottle circumferential directionand directly coupled to each other in such a case, the horzontal cross-ectional shape of the upper cylindrical portion 23Gb on a part where the projecting 5 portions 230d are arranged may be a Aircdar shape or the horizontalcrss-sectional shape of t pper Cylindrical portion 23Mb May be a cirular shape over the entire length in the direction of the bottle axis OX In addition, the ptojecting portions 230d are not essential anday int be provided. Furthermorealthough the depressed peripheral wall portion 230 is formed 10 into a to-Astage cylindrical shape, the depressed perpheral wall portion 230 ny be forned into a cylindrical shape with three or more stages or may not be formed into a multi-stage shape. [0071] in addition the synthetic resin material forming the boftie 10 may be 15 appropriatly changed to polyethylene terephth late, polyethylere naphtha late, amorphous polyester, or a hlend material thereof Furtheraore the bottle 10 may be formed od structure with an intermediate layer as well as a single layer structure. In addition examples of the intermediate layer inClude a layer formed of a resin material with a gas barrier fpropet a layer formed of a recycled material, a layer 20 formed ofia resin material with an oygen absorption property, and the like. [0072] in addition, although each of the horzontalcross-ectional shapeN of the shoulder portion 12. the body portion 13. and the bottom 14,which is perpendicular to the bottle ax ( is a circular shape in this embodennt, thhoriontalcrossectional 25 shape K not limited hereto and may he appropriately changed to a polygonal shape or the 28 ike, for xanple. Industrial Applicability [0073] A cording to the bottle f theembodinents of the present invention jt is 5 possbla to iprote performed ofesorbing deprewunnhon in t-botte, Referee gSignsisit [0074] 0: BOTTlE AXIS T: I!GIT FRO\ GR OI D CONTACT PORTION TO CURVED SURFACE 10 PORTION 01 INCLINATION ANGLE OF RIS N I ERIPHEIAI WALL PORTION 02: dNGLE BETW LEN MOYXF]E WALL PORTION AND Ri SING PERIPHERY AL WALL PORTION I BOTTLEi 15 12: SHOULDER PORTION 18 GROUND CONTACT PORTION 19: BOTTOM WALL PORTION OF BOT TOM 1: RISING PERIPHEERI AI PORTION 22: MOVABI E WAIL PORTION 20 23: DEPRESSED PERIP JERAL ALL PORTION 25:CURVEDSURACE PORION (CONNECTINGrPORTIN BETWEEN MOVABLE ALPORTION AND RISING PERIPHERAL WALLPORTION) 10: BOTTlL 140: BOTTOM 25 180:ROUND CI NTAT PORTION 29 190: B9OTIOMN \\1 . PORTION OF IOTT OM 210: RISING PERIPHERAI-WALL PORTION 220: M1OVAP WFALu PORTION 230: DEPRESS ED PFRIPERAIWAI PORTION 250: CURVEID SURFACE PORTION (OUTER END PORTION OF MOEN iOWAPIPORTION) 260: CURVED SURFACE PORTION (INNER END PORTION OF MOVABLE WALL PORTION)