CN213385118U - High-molecular food-grade plastic bottle blank - Google Patents
High-molecular food-grade plastic bottle blank Download PDFInfo
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- CN213385118U CN213385118U CN202021113701.3U CN202021113701U CN213385118U CN 213385118 U CN213385118 U CN 213385118U CN 202021113701 U CN202021113701 U CN 202021113701U CN 213385118 U CN213385118 U CN 213385118U
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Abstract
The utility model discloses a polymer food level plastic bottle base relates to plastic bottle processing technology field, including the bottleneck portion, the surface of bottleneck portion is provided with screw thread portion, the bottom of bottleneck portion forms the flange ring in location to the outside protrusion, the bottom of bottleneck portion is provided with bottle base body portion, the same and as an organic whole processing of material of bottleneck portion, screw thread portion, flange ring in location, bottle base body portion forms. The utility model relates to a rational in infrastructure, parameter values such as length, thickness that it can inject each part of polymer plastic bottle base, under standard blow molding temperature and tensile speed's production technology, can further avoid the plastic bottle base uneven thickness, warp the condition of breaking even to appear when the blow molding, when guaranteeing plastic bottle lightweight production, improve the yield of plastic bottle processing greatly.
Description
Technical Field
The utility model relates to a plastic bottle processing technology field specifically is a polymer food level plastic bottle base.
Background
The processing of plastic bottles generally refers to obtaining a plastic bottle blank with a larger thickness by extrusion or injection molding of a thermoplastic polymer plastic base material, placing the plastic bottle blank in a split mold while the plastic bottle blank is hot (or heated to a softened state), introducing compressed air into the plastic bottle blank immediately after the mold is closed to ensure that the plastic bottle blank is blown to cling to the inner wall of the mold, and obtaining various plastic bottle finished products after cooling and demolding.
Along with the rapid popularization of food grade plastic bottle products, the processing technical requirements for plastic bottles are more and more strict for achieving the purpose of saving plastics by lightening the plastic bottles, in the production process of lightening the plastic bottles, the plastic bottles are influenced by parameters such as the thickness of each part of a high polymer plastic bottle blank, even if the plastic bottle blank is subjected to blow molding under the production process of standard blow molding temperature and stretching speed, the conditions of uneven thickness, deformation and even breakage can also occur, so that the processing yield of the plastic bottles is influenced, in addition, when the plastic bottle blank is subjected to blow molding, the plastic bottle blank is heated and softened and then influenced by gravity, the bottle shoulder parts and the bottle middle parts of the plastic bottle blank are easily stretched downwards, and in the blow molding process, relative to the bottle shoulder parts and the bottle bottom parts, the bottle middle parts are easily subjected to small supporting force in the expanding process, so that the expansion speed of the bottle middle parts is large, thereby aggravating the phenomenon of uneven thickness of the plastic bottle. Therefore, the high-molecular food-grade plastic bottle blank is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
One) technical problem to be solved
The utility model aims at providing a high polymer food grade plastic bottle blank in order to make up the deficiency of the prior art.
II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: polymer food-grade plastic
The bottle blank comprises a bottle mouth part, a threaded part is arranged on the outer surface of the bottle mouth part, the bottom of the bottle mouth part protrudes outwards to form a positioning flange ring, a bottle blank body part is arranged at the bottom of the bottle mouth part, and the bottle mouth part, the threaded part, the positioning flange ring and the bottle blank body part are made of the same material and are integrally processed;
the bottle blank body part comprises a bottle shoulder part, a bottle middle part, a bottle lower part and a bottle bottom part, and the thickness values of the bottle shoulder part, the bottle middle part, the bottle lower part and the bottle bottom part are in uniform transition;
when the height value of the finished product bottle body part size of the preset plastic bottle blank body part is Q and the width value is T, the length value of the preset bottle blank body part is H and the maximum width value of the bottom of the bottle blank body part is J, the following relations are satisfied:
Q/T＜H/J；
when the vertical length value of the shoulder part of the preset bottle is K, the vertical length value of the middle part of the preset bottle is L, the vertical length value of the lower part of the preset bottle is M, and the vertical length value of the bottom of the preset bottle is N, the following relations are satisfied:
L＞K≥M＞N；
when the average thickness value of the bottle shoulder part is a, the average thickness value of the bottle middle part is b, the average thickness value of the bottle lower part is c, and the average thickness value of the bottle bottom part is d, the following relations are satisfied:
b＞a＞c＝d。
the bottle mouth part, the threaded part, the positioning flange ring and the bottle blank body part are made of any one of PET (polyethylene terephthalate), PEN (polyethylene naphthalate) and PE (polyethylene).
Further, when the material of bottleneck portion, screw thread portion, location flange ring, bottle base body portion chooses the PET material for use, when the blow molding temperature and the stretching rate of this plastics bottle base when the blow molding are in standard range, when the ratio between Q/T and H/J is between 1 ~ 1.6, satisfies the following relation:
L/K/M/N＝1/0.5～0.6/0.45～0.55/0.38～0.42；
b/a/c/d＝1/0.78～0.84/0.75～0.77/0.75～0.77。
furthermore, when the material of the bottle mouth part, the thread part, the positioning flange ring and the bottle blank body part is PEN material, when the blow molding temperature and the stretching rate of the plastic bottle blank during blow molding are in standard ranges, and the ratio between Q/T and H/J is between 1 and 1.6, the following relations are satisfied:
L/K/M/N＝1/0.55～0.6/0.48～0.58/0.38～0.45；
b/a/c/d＝1/0.75～0.86/0.75～0.8/0.75～0.8。
further, when the material of the bottle mouth part, the screw thread part, the positioning flange ring and the bottle blank body part is PE material, when the blow molding temperature and the stretching rate of the plastic bottle blank during blow molding are in a standard range, and the ratio between Q/T and H/J is between 1 to 1.6, the following relations are satisfied:
L/K/M/N＝1/0.6～0.66/0.4～0.62/0.35～0.38；
b/a/c/d is 1/0.72-0.8/0.7-0.75. Thirdly), the beneficial effects are as follows:
compared with the prior art, this polymer food level plastic bottle base possesses following beneficial effect: the utility model limits the length, thickness and other parameter values of each part of the macromolecule plastic bottle blank,
under the production technology of standard blow molding temperature and stretching rate, the condition that the plastic bottle blank has uneven thickness and is deformed or even cracked when blow molding can be further avoided, the lightweight production of the plastic bottle is ensured, the finished product rate of plastic bottle processing is greatly improved, in addition, the average thickness value of the middle part of the bottle is set as b > the average thickness value of the shoulder part of the bottle a > the average thickness value of the lower part of the bottle c which is the average thickness value of the bottom part of the bottle, limitation on the thickness of each part of the body part of the bottle blank is carried out, the phenomenon that the expansion rate of the middle part of the bottle is large due to the fact that the supporting force received by the middle part of the bottle in the process of blow molding expansion is small can be avoided, and the phenomenon that.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the polymer plastic bottle blank of the present invention;
FIG. 2 is a cross-sectional view of the front view of the polymer plastic bottle preform of the present invention;
fig. 3 is a front view of the finished plastic bottle of the present invention.
In the figure: 1. a finish portion; 2. a threaded portion; 3. positioning a flange ring; 4. a bottle preform body portion; 41. a bottle shoulder; 42. the middle part of the bottle; 43. the lower part of the bottle; 44. the bottom of the bottle; 401. and (5) obtaining a finished product of the bottle body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention
Sub-embodiments, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model provides a technical solution: a macromolecule food grade plastic bottle blank comprises a bottle mouth part 1, wherein a thread part 2 is arranged on the outer surface of the bottle mouth part 1, a positioning flange ring 3 is formed by outwards protruding the bottom of the bottle mouth part 1, a bottle blank body part 4 is arranged at the bottom of the bottle mouth part 1, and the bottle mouth part 1, the thread part 2, the positioning flange ring 3 and the bottle blank body part 4 are made of the same material and are integrally processed;
the bottle body part 4 comprises a bottle shoulder part 41, a bottle middle part 42, a bottle lower part 43 and a bottle bottom part 44, and the thickness values of the bottle shoulder part 41, the bottle middle part 42, the bottle lower part 43 and the bottle bottom part 44 are in uniform transition;
when the height value of the size 401 of the finished product bottle body part of the preset plastic bottle preform body part 4 is Q and the width value is T, the length value of the preset bottle preform body part 4 is H and the maximum width value at the bottom of the bottle preform body part 4 is J, the following relations are satisfied:
Q/T＜H/J；
when the vertical length value of the preset bottle shoulder portion 41 is K, the vertical length value of the bottle middle portion 42 is L, the vertical length value of the bottle lower portion 43 is M, and the vertical length value of the bottle bottom portion 44 is N, the following relationships are satisfied:
L＞K≥M＞N；
when the average thickness of bottle shoulder 41 is a, the average thickness of bottle middle 42 is b, the average thickness of bottle lower 43 is c, and the average thickness of bottle bottom 44 is d, the following relationships are satisfied: b > a > c ═ d. Thereby defining the average thickness value of the bottle central portion 42 as b > the average of the bottle shoulder portions 41
The thickness value a is greater than the average thickness value c of the bottle lower portion 43, which is the average thickness value d of the bottle bottom portion 44, so that the problem that the expansion rate of the bottle middle portion 42 is high due to the fact that the supporting force applied to the bottle middle portion 42 in the blow molding expansion process is small can be avoided, and the phenomenon that the thickness of the plastic bottle is uneven is further avoided.
Further, the bottle mouth portion 1, the screw portion 2, the positioning flange ring 3 and the bottle body portion 4 are made of any one of a PET material, a PEN material and a PE material.
Furthermore, the materials of the bottle mouth part 1, the screw thread part 2, the positioning flange ring 3 and the bottle blank body part 4 are selected
When the PET material is used, when the blow molding temperature and the stretching rate of the plastic bottle blank during blow molding are in a standard range, and the ratio between Q/T and H/J is 1-1.6, the following relation is satisfied:
L/K/M/N＝1/0.5～0.6/0.45～0.55/0.38～0.42；
b/a/c/d＝1/0.78～0.84/0.75～0.77/0.75～0.77。
the scheme can further avoid the conditions of uneven thickness, deformation and even breakage of the plastic bottle blank made of the PET material during blow molding, and can improve the yield of plastic bottle processing.
Further, when the material of the bottle mouth part 1, the thread part 2, the positioning flange ring 3 and the bottle blank body part 4 is PEN material, when the blow molding temperature and the stretch rate of the plastic bottle blank during blow molding are in standard ranges, and the ratio between Q/T and H/J is between 1 and 1.6, the following relations are satisfied:
L/K/M/N＝1/0.55～0.6/0.48～0.58/0.38～0.45；
b/a/c/d＝1/0.75～0.86/0.75～0.8/0.75～0.8。
the scheme can further avoid the conditions of uneven thickness, deformation and even breakage of the plastic bottle blank made of the PEN material during blow molding, and can improve the yield of plastic bottle processing.
Further, when the material of the bottle mouth part 1, the thread part 2, the positioning flange ring 3 and the bottle blank body part 4 is PE material, when the blow molding temperature and the stretch rate of the plastic bottle blank during blow molding are in standard ranges, and the ratio between Q/T and H/J is between 1 to 1.6, the following relations are satisfied:
L/K/M/N＝1/0.6～0.66/0.4～0.62/0.35～0.38；
b/a/c/d＝1/0.72～0.8/0.7～0.75/0.7～0.75。
the scheme can further avoid the conditions of uneven thickness, deformation and even breakage of the plastic bottle blank made of PE materials during blow molding, and can improve the yield of plastic bottle processing.
The working principle is as follows: referring to fig. 2 and 3 again, by defining the ratio between the height Q and the width T of the finished body 401 of the preform body 4, the length H and the preform body 4 of the preform body 4
4, the vertical length value K of the bottle shoulder part 41, the vertical length value L of the bottle middle part 42, the vertical length value M of the bottle lower part 43 and the vertical length value N of the bottle bottom part 44, and the size relations among the average thickness value a of the bottle shoulder part 41, the average thickness value b of the bottle middle part 42, the average thickness value c of the bottle lower part 43 and the average thickness value d of the bottle bottom part 44, under the production process of standard blow molding temperature and stretching rate, the conditions of uneven thickness, deformation and even breakage of the PE plastic bottle blank during blow molding can be further avoided, the plastic bottle processing yield is greatly improved while the light weight production of the plastic bottle is ensured, the plastic bottle processing yield is proved in the actual production process, in addition, the average thickness value of the bottle middle part 42 is set as b > the average thickness value a of the bottle shoulder part 41 > the average thickness value a of the bottle lower part 43 The value c is the average thickness value d of the bottle bottom 44, and the limitation on the thickness of each part of the bottle blank body 4 can avoid that the expansion rate of the bottle middle part 42 is high due to the small supporting force of the bottle middle part 42 in the blow molding expansion process, so that the phenomenon of uneven thickness of the plastic bottle is further avoided.
It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "fixedly," "mounted," "connected," and "connected" are to be construed broadly, e.g., "mounted" may be fixedly connected, or detachably connected, or integrally connected; "connected" may be mechanically or electrically connected; "connected" may be directly connected or indirectly connected through an intermediate member, or may be internal or external to two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a polymer food level plastic bottle base, includes bottleneck portion (1), its characterized in that: the outer surface of the bottle mouth part (1) is provided with a threaded part (2), the bottom of the bottle mouth part (1) protrudes outwards to form a positioning flange ring (3), the bottom of the bottle mouth part (1) is provided with a bottle blank body part (4), and the bottle mouth part (1), the threaded part (2), the positioning flange ring (3) and the bottle blank body part (4) are made of the same material and are integrally processed;
the bottle blank body part (4) comprises a bottle shoulder part (41), a bottle middle part (42), a bottle lower part (43) and a bottle bottom part (44), wherein the bottle shoulder part (41), the bottle middle part (42), the bottle lower part (43) and the bottle bottom part
(44) The thickness values between the two are evenly transited;
when the height value of the size of a finished product bottle body part (401) of a preset plastic bottle blank body part (4) is Q and the width value is T, the length value of the preset bottle blank body part (4) is H, and the maximum width value of the bottom of the bottle blank body part (4) is J, the following relations are satisfied:
Q/T＜H/J；
when the vertical length value of the shoulder part (41) of the preset bottle is K, the vertical length value of the middle part (42) of the preset bottle is L, the vertical length value of the lower part (43) of the preset bottle is M, and the vertical length value of the bottom part (44) of the preset bottle is N, the following relations are satisfied:
L＞K≥M＞N；
when the average thickness value of the bottle shoulder part (41) is a, the average thickness value of the bottle middle part (42) is b, the average thickness value of the bottle lower part (43) is c, and the average thickness value of the bottle bottom part (44) is d, the following relations are satisfied:
b＞a＞c＝d。
2. the high molecular food grade plastic bottle preform of claim 1, wherein: the bottle mouth part (1), the threaded part (2), the positioning flange ring (3) and the bottle blank body part (4) are made of any one of PET (polyethylene terephthalate), PEN (polyethylene naphthalate) and PE (polyethylene).
3. A polymeric food grade plastic bottle preform according to claims 1-2, wherein: when the bottle mouth part (1), the screw thread part (2), the positioning flange ring (3) and the bottle blank body part (4)
When the PET material is selected for use, when the blow molding temperature and the stretching rate of the plastic bottle blank during blow molding are within a standard range, and the ratio between Q/T and H/J is 1-1.6, the following relation is satisfied:
L/K/M/N＝1/0.5～0.6/0.45～0.55/0.38～0.42；
b/a/c/d＝1/0.78～0.84/0.75～0.77/0.75～0.77。
4. a polymeric food grade plastic bottle preform according to claims 1-2, wherein: when the bottle mouth part (1), the thread part (2), the positioning flange ring (3) and the bottle blank body part (4) are made of PEN materials, when the blow molding temperature and the stretching rate of the plastic bottle blank during blow molding are in a standard range, and the ratio of Q/T to H/J is 1-1.6, the following relations are satisfied:
L/K/M/N＝1/0.55～0.6/0.48～0.58/0.38～0.45；
b/a/c/d＝1/0.75～0.86/0.75～0.8/0.75～0.8。
5. a polymeric food grade plastic bottle preform according to claims 1-2, wherein: when the material of bottleneck portion (1), screw thread portion (2), location flange ring (3), bottle base body portion (4) chose the PE material for use, when the blow molding temperature and the stretching rate of this plastics bottle base when the blow molding are in standard range, when the ratio between Q/T and H/J is between 1 ~ 1.6, satisfy the following relation:
L/K/M/N＝1/0.6～0.66/0.4～0.62/0.35～0.38；
b/a/c/d＝1/0.72～0.8/0.7～0.75/0.7～0.75。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021113701.3U CN213385118U (en) | 2020-06-16 | 2020-06-16 | High-molecular food-grade plastic bottle blank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021113701.3U CN213385118U (en) | 2020-06-16 | 2020-06-16 | High-molecular food-grade plastic bottle blank |
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| Publication Number | Publication Date |
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| CN213385118U true CN213385118U (en) | 2021-06-08 |
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| CN202021113701.3U Active CN213385118U (en) | 2020-06-16 | 2020-06-16 | High-molecular food-grade plastic bottle blank |
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