CN204368624U - A kind of carbonic acid bottle bottom structure - Google Patents
A kind of carbonic acid bottle bottom structure Download PDFInfo
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- CN204368624U CN204368624U CN201420366496.XU CN201420366496U CN204368624U CN 204368624 U CN204368624 U CN 204368624U CN 201420366496 U CN201420366496 U CN 201420366496U CN 204368624 U CN204368624 U CN 204368624U
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Abstract
The utility model relates to PET carbonic acid bottle, aims to provide a kind of carbonic acid bottle bottom structure.The cross-sectional plane of this kind of carbonic acid bottle bottom structure is circular, carbonic acid bottle bottom structure comprises pawl lobe, groove, detent and central boss, central boss is the center being arranged on carbonic acid bottle bottom structure, and to the conical structure of carbonic acid bottle internal protrusion, and detent is arranged at the top of conical structure, in loop configuration between central boss to carbonic acid bottle bottom structure excircle, at least be provided with two center shafts relative to carbonic acid bottle equiangularly evenly spaced pawl lobe, between adjacent two pawl lobes, be provided with groove.The utility model is after taking into full account bottle formed through light, the bottle end, is under (4.2 ± 0.1) GV internal pressure conditions, and be soaked in the alkali lye of 0.2%, within 15 ~ 30 minutes, do not split and do not leak, under fast pressurization 135psi condition, pressurize is after 30 seconds, do not burst, reach the operating needs of the PET bottle of high air content completely.
Description
Technical field
The utility model is about PET carbonic acid bottle, particularly a kind of carbonic acid bottle bottom structure.
Background technology
Soda refers to and carbon dioxide and various different spices, moisture, syrup, pigment etc. is mixed and the bubble type beverage formed.PET carbonated drink bottle has that outward appearance is beautiful, flexible design, intensity are high, to carbon dioxide good airproof performance and failure-free wholesomeness, make polyester bottles become the desirable packing container of soda.Can stand up at the bottom of PET bottle, decrease the use of production program and raw material, receive the welcome of numerous manufacturers, but also bring the problem of easy stress crack, sunken bottom at the bottom of claw type simultaneously.
At present, along with the rising of the prices of raw and semifnished materials and the reinforcement of people's environmental consciousness, the enterprise producing polyethylene terephthalate (PET) bottle payes attention to saving material more, make every effort to satisfy the demands of consumers with lighter grammes per square metre, namely in guaranteed capacity requirement situation, PET bottle is done more and more lighter, realize PET bottle lightweight.No matter which kind of changes, and carbonic acid PET bottle performance will meet following 2 requirements:
A. requirement of withstand voltage: having under protective device condition, fast pressurization has filled the bottle of water to 135psi, and pressurize 30 seconds, does not burst;
B. stress crack requires: under bottle internal gas pressure about (4.2 ± 0.1) GV condition, be immersed in the alkali lye of 0.2% by bottle bottom part, bottle blowing of looking for novelty does not split at the bottom of bottle and do not leak for 15 ~ 30 minutes;
C. sunken bottom does not require: in bottle, implantation temperature be (23 ± 2) DEG C, carbon dioxide content is the carbonated water of (4.2 ± 0.1) times volume, then uses bottle cap sealing, after being positioned over 38 DEG C of controlled-temperature cabinets placement (2 ± 1) skies, and not sunken bottom.
After the lightweight of bottle embryo, a, b, c tri-requirements be ensured, requirements at the higher level are proposed to PET bottle bottom structure.Before bottle embryo does not have lightweight, general by relatively thick bottom bottle, the changes in bottom before inflation and after inflating is smaller, and the unrelieved stress that the injection moulding of bottle embryo produces is also less, bottle bottom strength easily ensures therefore do not have very high requirement for the structure design bottom bottle.After the lightweight of bottle embryo, bottom bottle, general wall thickness is less, larger with the changes in bottom after inflation before inflation, and the unrelieved stress that the injection moulding of bottle embryo produces is also comparatively large, and bottle bottom strength is comparatively difficult to ensure card.Therefore higher for the Structural Design Requirement bottom bottle.
Utility model content
Main purpose of the present utility model is to overcome deficiency of the prior art, after a kind of PET bottle lightweight is provided, can avoid when PET bottle blow molding producing that bottom is overweight, center-point is blocked up, and meet bottle requirement of withstand voltage and effect of stress does not ftracture, the bottom structure of thermally-stabilised not sunken bottom requirement because being subject to.For solving the problems of the technologies described above, solution of the present utility model is:
There is provided a kind of carbonic acid bottle bottom structure, for forming carbonic acid bottle, the cross-sectional plane (with the cross section of the central axis of carbonic acid bottle) of carbonic acid bottle bottom structure is circular, and carbonic acid bottle bottom structure comprises pawl lobe, groove, detent and central boss;
Central boss is for balancing the distortion of each pawl lobe, central boss is the center being arranged on carbonic acid bottle bottom structure, and to the conical structure of carbonic acid bottle internal protrusion, and the top of conical structure is when having carbonic acid bottle shaping, the detent that stretching masthead end is formed, detent is the cylindrical structural to carbonic acid bottle outer projection, passes through spherical transition between the end face excircle of detent and central boss;
In loop configuration between central boss to carbonic acid bottle bottom structure excircle, at least be provided with two center shafts relative to carbonic acid bottle equiangularly evenly spaced pawl lobe, pawl lobe is the stand bar structure of finger-like, and the baseplane of stand bar structure forms ground plane, is provided with groove between adjacent two pawl lobes.
As further improvement, bottom circular diameter φ 3 and the ratio of the excircle diameter phi of carbonic acid bottle bottom structure of described conical central boss are 0.15 ~ 0.3:1 (preferably 0.2 ~ 0.3:1).
As further improvement, the height h2 of described central boss is 0.05 ~ 0.25:1 with the ratio of the height H of carbonic acid bottle bottom structure, pawl lobe baseplane is 0.2 ~ 0.4:1 to the height h of detent end face with the ratio of the height H of carbonic acid bottle bottom structure, and the subtended angle β of groove both sides linear portion is between 50 ° ~ 75 °.
As further improvement, the body diameter φ 1 of described cylindrical detent is 4.0 ~ 6.0mm, and the degree of depth h1 of detent is 0.6 ~ 1mm.
As further improvement, the earth point of carbonic acid bottle bottom structure turns fillet circular arc and forms the outermost circle of carbonic acid bottle bottom structure ground plane, it is 0.6 ~ 0.9:1 that described earth point turns the arc diameter φ 2 of fillet with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure, the excircle of carbonic acid bottle bottom structure and earth point turn fillet by corner arc transition, and the radius R 1 of corner circular arc is 0.08 ~ 0.25:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure.
As further improvement, the height H of described carbonic acid bottle bottom structure is 0.3 ~ 0.5:1 with the ratio of the diameter phi of carbonic acid bottle bottom structure.
As further improvement, described pawl lobe is provided with five.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is after taking into full account bottle formed through light, the bottle end, is under (4.2 ± 0.1) GV internal pressure conditions, and be soaked in the alkali lye of 0.2%, within 15 ~ 30 minutes, do not split and do not leak, under fast pressurization 135psi condition, pressurize is after 30 seconds, do not burst, reach the operating needs of the PET bottle of high air content completely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is block diagram of the present utility model.
Fig. 3 is front view of the present utility model.
Fig. 4 is upward view of the present utility model.
Fig. 5 is that the B-B of Fig. 4 is to cutaway view.
Fig. 6 is the section drawing in Fig. 5 A-A face.
Reference numeral in figure is: 1 pawl lobe; 2 grooves; 3 detents; 4 central boss.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail:
A kind of carbonic acid bottle bottom structure for forming carbonic acid bottle as shown in Figures 1 to 5, improve on based on indent five pawl bottle common at present, bottom centre's boss 4 region is re-started and improves design, after making it to take into full account bottle formed through light, the bottle end, is under (4.2 ± 0.1) GV internal pressure conditions, be soaked in the alkali lye of 0.2%, within 15 ~ 30 minutes, do not split and do not leak, under fast pressurization 135psi condition, pressurize is after 30 seconds, do not burst, reach the operating needs of the PET bottle of high air content completely.
The cross-sectional plane (with the cross section of the central axis of carbonic acid bottle) of carbonic acid bottle bottom structure is circular, and carbonic acid bottle bottom structure comprises pawl lobe 1, groove 2, detent 3 and central boss 4.Central boss 4 is for balancing the distortion of each pawl lobe 1, central boss 4 is the centers being arranged on carbonic acid bottle bottom structure, and to the conical structure of carbonic acid bottle internal protrusion, the bottom circular diameter φ 3 of conical central boss 4 is 0.15 ~ 0.3:1, preferably 0.2 ~ 0.3:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure.When the top of conical structure has carbonic acid bottle shaping, the detent 3 that stretching masthead end is formed, detent 3 is the cylindrical structural to carbonic acid bottle outer projection, the body diameter φ 1 of cylindrical detent 3 is 4.0 ~ 6.0mm, the degree of depth h1 of detent 3 is 0.6 ~ 1mm, passes through spherical transition between the end face excircle of detent 3 and central boss 4.When detent 3 diameter phi 1 is too small, degree of depth h1 crosses shallow, in bottle blowing process, bottle embryo stretches easily eccentric, affects compressive property at the bottom of bottle.When detent 3 diameter of phi 1 is excessive, degree of depth h1 crosses dark, stretching detent 3 plastics at the bottom of bottle do not stretch completely and easily produce buildup and lamination, cause resistance to compression to decline.
In loop configuration between central boss 4 to carbonic acid bottle bottom structure excircle, be provided with five two center shafts relative to carbonic acid bottle equiangularly evenly spaced pawl lobe 1, pawl lobe 1 is the stand bar structure of finger-like, the baseplane of stand bar structure forms ground plane, is provided with groove 2 between adjacent two pawl lobes 1.The height h2 of central boss 4 is 0.05 ~ 0.25:1 with the ratio of the height H of carbonic acid bottle bottom structure, pawl lobe 1 baseplane is 0.2 ~ 0.4:1 to the height h of detent 3 end face with the ratio of the height H of carbonic acid bottle bottom structure, the subtended angle β of groove 2 both sides linear portion, can with reference to figure 6 between 50 ° ~ 75 °.In addition, central boss 4 diameter phi 3 is excessive or too small, and central boss 4 is buildup, plastics skewness all easily, and anti-internal pressure capability dies down, and during stress test, bottom centre easily ftractures in region, thermally-stabilisedly easily occurs sunken bottom phenomenon.
Require or the excircle diameter phi of amount of capacity determination carbonic acid bottle bottom structure according to Customer design, in order to not affect the styling design of body portion, the height H of carbonic acid bottle bottom structure is 0.3 ~ 0.5:1 with the ratio of the diameter phi of carbonic acid bottle bottom structure.As shown in Figure 3, the arc diameter φ 2 of ground connection corner circle is for when carbonic acid bottle is in one plane uprightly placed, the outermost circle diameter of bottle end contact area in the plane, namely the outermost circle of carbonic acid bottle bottom structure ground plane is formed, general earth point turns the diameter phi 2 of fillet when being 0.6 ~ 0.9:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure, can obtain excellent stability and hauling ability.The excircle of carbonic acid bottle bottom structure and earth point turn fillet by corner arc transition, and the radius R 1 of corner circular arc is 0.08 ~ 0.25:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure.
The following examples can make professional and technical personnel's comprehend the utility model of this specialty, but limit the utility model never in any form.In embodiment, the unification of unreceipted arc radius or diameter length unit is mm.
Embodiment 1: preparation 600ml carbonated drink bottle.
(1) according to PET bottle capacity 600ml, diameter 67.5mm at the bottom of getting bottle;
(2) according to height H at the bottom of bottle=(0.3 ~ 0.5) φ, H=0.355 × 67.5 ≈ 24 is got;
(3) according to center height h=(0.2 ~ 0.4) H, h=0.3 × 24=7.2 is got;
(4) according to central boss 4 height h2=(0.05 ~ 0.25) H, h2=0.13 × 24 ≈ 3.1 is got;
(5) according to ground connection corner circular arc centre point diameter phi 2=(0.6 ~ 0.9) φ, φ 2=0.69 × 67.5 ≈ 46.5 is got;
(6) according to corner circular arc R 1=(0.08 ~ 0.25) φ, R1=0.1 × 67.5 ≈ 7 is got;
(7) according to central boss 4 diameter phi 3=(0.15 ~ 0.3) φ, φ 3=0.246 × 67.5 ≈ 16.6 is got;
(8) pawl lobe 1 groove 2 both sides linear portion subtended angle β gets 60 °;
(9) stretching detent 3 diameter phi 1, value 4mm at the bottom of bottle;
(10) stretching detent 3 height h1, value 0.8mm at the bottom of bottle.
With reference to the above-mentioned PET bottle bottom structure size mfg. moulding die that calculates and blown bottle, and test sunken bottom and leakage scenarios, test result is as follows:
Sunken bottom is tested: in bottle, implantation temperature is (23 ± 2) DEG C, carbon dioxide content is the carbonated water of (4.2 ± 0.1) GV, then uses bottle cap sealing, after being positioned over 38 DEG C of controlled-temperature cabinet (2 ± 1) skies, detects.Sunken bottom test data is as shown in table 1 below.
Table 1 embodiment 1 sunken bottom test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 | Aviation value |
| Center-point empty bottle h height (mm) | 5.03 | 5.06 | 5.24 | 5.21 | 5.22 | 5.15 |
| Gang Guanhao rear center's point h height (mm) | 3.34 | 3.59 | 3.54 | 3.72 | 3.52 | 3.54 |
| Constant temperature 24 hours rear center's point h height (mm) | 1.52 | 1.46 | 1.65 | 1.45 | 1.56 | 1.53 |
| Constant temperature 48 hours rear center's point h height (mm) | 1.25 | 1.14 | 1.30 | 1.15 | 1.25 | 1.22 |
Test result shows, finished product bottle was positioned over 38 DEG C of controlled-temperature cabinets after 2 days, did not occur sunken bottom phenomenon.
Quick stress test: by filling for water to liquid level line, in bottle, add citric acid and the sodium bicarbonate of respective amount, cover tightly bottle cap, shake up, citric acid and sodium bicarbonate are fully reacted, until the carbon dioxide volume generated is equivalent to (4.2 ± 0.1) of bottle inner volume doubly.Sample is positioned over (23 ± 2) DEG C, in 0.2%NaOH solution, makes bottom NaOH solution submergence sample.Test data is as shown in table 2 below.
Table 2 embodiment 1 test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 |
| 15 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
| 30 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
Test result shows, finished product bottle is in (23 ± 2) DEG C situation, when in bottle, air content is (4.2 ± 0.1) GV, it is test in 0.2%NaOH solution that bottom H height component is vertically immersed in concentration, does not occur crackle and seepage in 30 minutes.
Embodiment 2: preparation 1250ml carbonic acid water bottle
(1) according to PET bottle capacity 1250ml, diameter 89.5mm at the bottom of getting bottle;
(2) according to height H at the bottom of bottle=(0.3 ~ 0.5) × 89.5, H=0.4 × 89.5 ≈ 36 is got;
(3) according to center height h=(0.2 ~ 0.4) H, h=0.216 × 36 ≈ 7.8 is got;
(4) according to central boss 4 height h2=(0.05 ~ 0.25) H, h2=0.1 × 36=3.6 is got;
(5) according to ground connection corner circular arc centre point diameter phi 2=(0.6 ~ 0.9) φ, φ 2=0.68 × 89.5 ≈ 61 is got;
(6) according to corner circular arc R 1=(0.08 ~ 0.25) φ, R1=0.1 × 89.5 ≈ 9 is got;
(7) according to central boss 4 diameter phi 3=(0.15 ~ 0.3) φ, φ 3=0.246 × 89.5 ≈ 22 is got;
(8) pawl lobe 1 groove 2 both sides linear portion subtended angle β gets 58 °;
(9) stretching detent 3 diameter phi 1, value 4.4mm at the bottom of bottle;
(10) stretching detent 3 height h1, value 0.8mm at the bottom of bottle.
With reference to the above-mentioned PET bottle bottom structure size mfg. moulding die that calculates and blown bottle, and test sunken bottom and leakage scenarios, test result is as follows:
Sunken bottom is tested: in bottle, implantation temperature is (23 ± 2) DEG C, carbon dioxide content is the carbonated water of (4.2 ± 0.1) GV, then uses bottle cap sealing, after being positioned over 38 DEG C of controlled-temperature cabinet (2 ± 1) skies, detects.Sunken bottom test data is as shown in table 3 below.
Table 3 embodiment 2 sunken bottom test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 | Aviation value |
| Center-point empty bottle h height (mm) | 7.49 | 7.39 | 7.44 | 7.52 | 7.38 | 7.44 |
| Gang Guanhao rear center's point h height (mm) | 5.82 | 5.73 | 5.77 | 5.94 | 5.73 | 5.80 |
| Constant temperature 24 hours rear center's point h height (mm) | 3.64 | 3.37 | 3.29 | 3.67 | 3.27 | 3.45 |
| Constant temperature 48 hours rear center's point h height (mm) | 3.25 | 3.03 | 3.13 | 3.31 | 2.92 | 3.13 |
| Constant temperature 72 hours rear center's point h height (mm) | 2.97 | 2.74 | 2.68 | 3.01 | 2.61 | 2.80 |
Test result shows, finished product bottle was positioned over 38 DEG C of controlled-temperature cabinets after 3 days, did not occur sunken bottom phenomenon.
Quick stress test: by filling for water to liquid level line, in bottle, add citric acid and the sodium bicarbonate of respective amount, cover tightly bottle cap, shake up, citric acid and sodium bicarbonate are fully reacted, until the carbon dioxide volume generated is equivalent to (4.2 ± 0.1) of bottle inner volume doubly.Sample is positioned over (23 ± 2) DEG C, in 0.2%NaOH solution, makes bottom NaOH solution submergence sample.Test data is as shown in table 4 below.
Table 4 embodiment 2 test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 |
| 15 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
| 30 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
Test result shows, finished product bottle is in (23 ± 2) DEG C situation, when in bottle, air content is (4.2 ± 0.1) GV, it is test in 0.2%NaOH solution that bottom H height component is vertically immersed in concentration, does not occur crackle and seepage in 30 minutes.
Embodiment 3: preparation 2000ml carbonated drink bottle.
(1) according to PET bottle capacity 2000ml, diameter 107mm at the bottom of getting bottle;
(2) according to height H at the bottom of bottle=(0.3 ~ 0.5) × 107, H=0.476 × 107 ≈ 51 is got;
(3) according to center height h=(0.15 ~ 0.4) H, h=0.2 × 51 ≈ 10 is got;
(4) according to central boss 4 height h2=(0.05 ~ 0.25) H, h2=0.07 × 51 ≈ 3.5 is got;
(5) according to ground connection corner circular arc centre point diameter phi 2=(0.6 ~ 0.9) φ, φ 2=0.63 × 107 ≈ 67 is got;
(6) according to corner circular arc R 1=(0.08 ~ 0.25) φ, R1=0.12 × 107 ≈ 12.5 is got;
(7) according to central boss 4 diameter phi 3=(0.15 ~ 0.3) φ, φ 3=0.19 × 107 ≈ 20 is got;
(8) pawl lobe 1 groove 2 both sides linear portion subtended angle β gets 68 °;
(9) stretching detent 3 diameter phi 1, value 4.4mm at the bottom of bottle;
(10) stretching detent 3 height h1, value 0.8mm at the bottom of bottle.
With reference to the above-mentioned PET bottle bottom structure size mfg. moulding die that calculates and blown bottle, and test sunken bottom and leakage scenarios, test result is as follows:
Sunken bottom is tested: in bottle, implantation temperature is (23 ± 2) DEG C, carbon dioxide content is the carbonated water of (4.2 ± 0.1) GV, then uses bottle cap sealing, after being positioned over 38 DEG C of controlled-temperature cabinet (2 ± 1) skies, detects.Sunken bottom test data is as shown in table 5 below.
Table 5 embodiment 3 sunken bottom test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 | Aviation value |
| Center-point empty bottle h height (mm) | 8.85 | 8.83 | 9.05 | 8.94 | 9.25 | 8.98 |
| Gang Guanhao rear center's point h height (mm) | 8.13 | 8.26 | 8.40 | 8.38 | 8.61 | 8.36 |
| Constant temperature 24 hours rear center's point h height (mm) | 6.35 | 6.32 | 6.64 | 6.60 | 7.06 | 6.59 |
| Constant temperature 48 hours rear center's point h height (mm) | 5.93 | 5.91 | 6.24 | 6.21 | 6.74 | 6.21 |
| Constant temperature 72 hours rear center's point h height (mm) | 5.64 | 5.63 | 5.98 | 6.01 | 6.48 | 5.95 |
Test result shows, finished product bottle was positioned over 38 DEG C of controlled-temperature cabinets after 3 days, did not occur sunken bottom phenomenon.
Quick stress test: by filling for water to liquid level line, in bottle, add citric acid and the sodium bicarbonate of respective amount, cover tightly bottle cap, shake up, citric acid and sodium bicarbonate are fully reacted, until the carbon dioxide volume generated is equivalent to (4.2 ± 0.1) of bottle inner volume doubly.Sample is positioned over (23 ± 2) DEG C, in 0.2%NaOH solution, makes bottom NaOH solution submergence sample.Test data is as shown in table 6 below.
Table 6 embodiment 3 test data table
| Assay flask number | 1 | 2 | 3 | 4 | 5 |
| 15 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
| 30 minutes | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak | Do not split and do not leak |
Test result shows, finished product bottle is in (23 ± 2) DEG C situation, when in bottle, air content is (4.2 ± 0.1) GV, it is test in 0.2%NaOH solution that bottom H height component is vertically immersed in concentration, does not occur crackle and seepage in 30 minutes.
Finally, it should be noted that above what enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have a lot of distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed in the utility model, all should think protection domain of the present utility model.
Claims (7)
1. a carbonic acid bottle bottom structure, for forming carbonic acid bottle, the cross-sectional plane of carbonic acid bottle bottom structure, namely with upper section at the bottom of the bottle of the central axis of carbonic acid bottle, for circle, it is characterized in that, carbonic acid bottle bottom structure comprises pawl lobe, groove, detent and central boss;
Central boss is for balancing the distortion of each pawl lobe, central boss is the center being arranged on carbonic acid bottle bottom structure, and to the conical structure of carbonic acid bottle internal protrusion, and the top of conical structure is when having carbonic acid bottle shaping, the detent that stretching masthead end is formed, detent is the cylindrical structural to carbonic acid bottle outer projection, passes through spherical transition between the end face excircle of detent and central boss;
In loop configuration between central boss to carbonic acid bottle bottom structure excircle, at least be provided with two center shafts relative to carbonic acid bottle equiangularly evenly spaced pawl lobe, pawl lobe is the stand bar structure of finger-like, and the baseplane of stand bar structure forms ground plane, is provided with groove between adjacent two pawl lobes.
2. a kind of carbonic acid bottle bottom structure according to claim 1, is characterized in that, the bottom circular diameter φ 3 of described conical central boss is 0.15 ~ 0.3:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure.
3. a kind of carbonic acid bottle bottom structure according to claim 1, it is characterized in that, the height h2 of described central boss is 0.05 ~ 0.25:1 with the ratio of the height H of carbonic acid bottle bottom structure, pawl lobe baseplane is 0.2 ~ 0.4:1 to the height h of detent end face with the ratio of the height H of carbonic acid bottle bottom structure, and the subtended angle β of groove both sides linear portion is between 50 ° ~ 75 °.
4. a kind of carbonic acid bottle bottom structure according to claim 1, is characterized in that, the body diameter φ 1 of described cylindrical detent is 4.0 ~ 6.0mm, and the degree of depth h1 of detent is 0.6 ~ 1mm.
5. a kind of carbonic acid bottle bottom structure according to claim 1, it is characterized in that, the earth point of carbonic acid bottle bottom structure turns fillet circular arc and forms the outermost circle of carbonic acid bottle bottom structure ground plane, it is 0.6 ~ 0.9:1 that described earth point turns the arc diameter φ 2 of fillet with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure, the excircle of carbonic acid bottle bottom structure and earth point turn fillet by corner arc transition, and the radius R 1 of corner circular arc is 0.08 ~ 0.25:1 with the ratio of the excircle diameter phi of carbonic acid bottle bottom structure.
6. a kind of carbonic acid bottle bottom structure according to claim 1, is characterized in that, the height H of described carbonic acid bottle bottom structure is 0.3 ~ 0.5:1 with the ratio of the diameter phi of carbonic acid bottle bottom structure.
7. a kind of carbonic acid bottle bottom structure according to claim 1 to 6 any one, is characterized in that, described pawl lobe is provided with five.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108528899A (en) * | 2018-04-12 | 2018-09-14 | 广东星联精密机械有限公司 | A kind of bottom structure of lightweight plastic bottle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528899A (en) * | 2018-04-12 | 2018-09-14 | 广东星联精密机械有限公司 | A kind of bottom structure of lightweight plastic bottle |
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