Bottle blowing process for hand cream with butt-joint-free bottom
阅读说明：本技术 一种底部无对接缝型护手霜吹瓶加工工艺 (Bottle blowing process for hand cream with butt-joint-free bottom ) 是由 张雅阳 于 2021-01-11 设计创作，主要内容包括：本发明公开了一种底部无对接缝型护手霜吹瓶加工工艺,包括以下步骤：A、将原材料混合后加入干燥罐中搅拌均匀干燥；B、将干燥后的原材料加入注塑机中,通过注塑机螺杆融化得到熔体,将熔体注入到注塑模具中,冷却得到瓶坯；C、将瓶坯放入吹塑模具中,并通过热风喷吹方式将瓶坯加热软化；D、拉动软化后的瓶坯,使瓶坯与吹塑模具贴合；E、之后通过吹瓶机的吹气系统进行吹气,将瓶胚一次吹塑成护手霜吹塑瓶；F、之后检查吹塑瓶质量并进行分类,本发明采用的加工工艺操作简单,一次吹塑成型,能够确保吹塑瓶壁厚的均匀性,同时吹塑瓶底部无对接缝,整体强度高,不易变形损坏。(The invention discloses a bottle blowing process for hand cream with a butt-joint-free bottom, which comprises the following steps: A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying; B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank; C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode; D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold; E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step; F. the processing technology adopted by the invention is simple to operate, the one-time blow molding can ensure the uniformity of the wall thickness of the blow molded bottle, and meanwhile, the bottom of the blow molded bottle has no butt joint, the integral strength is high, and the blow molded bottle is not easy to deform and damage.)
1. A bottom butt-joint-free hand cream bottle blowing processing technology is characterized in that: the method comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
2. The bottle blowing process of hand cream with butt-joint-free bottom according to claim 1, which is characterized in that: the raw material components in the step A comprise, by weight, 50-80 parts of ethylene-butylene copolymer polyethylene base resin, 4-10 parts of acetylated triethyl citrate, 3-9 parts of PP wax, 1-3 parts of antioxidant, 2-6 parts of nano zinc oxide and 4-8 parts of glass beads.
3. The bottle blowing process of hand cream with butt-joint-free bottom according to claim 1, which is characterized in that: in the step A, the drying temperature is 55-65 ℃, and the drying time is 30-50 min.
4. The bottle blowing process of hand cream with butt-joint-free bottom according to claim 1, which is characterized in that: the melting temperature of the screw of the injection molding machine in the step B is 320-340 ℃.
5. The bottle blowing process of hand cream with butt-joint-free bottom according to claim 1, which is characterized in that: and E, firstly adopting low-pressure air blowing, then adopting high-pressure air blowing, and finally adopting low-pressure air blowing.
6. The bottle blowing process of hand cream with butt-joint-free bottom according to claim 5, which is characterized in that: wherein the low-pressure blowing pressure is 5kg/cm 2 ～7kg/cm 2 (ii) a The high-pressure blowing pressure is 32kg/cm 2 ～34kg/cm 2 。
Technical Field
The invention relates to the technical field of hand cream bottle blowing processing, in particular to a processing technology of hand cream bottle blowing with a bottom having no butt joint.
Background
The PET bottle has strong applicability, and is widely applied to the fields of articles for daily use, daily chemical packaging and the like. The existing processing technology of the hand cream blow molding bottle is complex to operate, and the bottom of the blow molding bottle is provided with a butt seam which influences the strength of the blow molding bottle, so that the existing processing technology needs to be improved.
Disclosure of Invention
The invention aims to provide a bottle blowing process for hand cream with a butt-joint-free bottom, which aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
Preferably, the raw material components in the step A comprise, by weight, 50-80 parts of ethylene-butylene copolymer polyethylene base resin, 4-10 parts of acetylated triethyl citrate, 3-9 parts of PP wax, 1-3 parts of antioxidant, 2-6 parts of nano zinc oxide and 4-8 parts of glass beads.
Preferably, the drying temperature in the step A is 55-65 ℃, and the drying time is 30-50 min.
Preferably, the melting temperature of the screw of the injection molding machine in the step B is 320-340 ℃.
Preferably, in the step E, low-pressure air blowing is adopted firstly, then high-pressure air blowing is adopted, and finally low-pressure air blowing is adopted.
Preferably, wherein the low-pressure blowing pressure is 5kg/cm 2 ～7kg/cm 2 (ii) a The high-pressure blowing pressure is 32kg/cm 2 ～34kg/cm 2 。
Compared with the prior art, the invention has the beneficial effects that: the processing technology adopted by the invention is simple to operate, the uniformity of the wall thickness of the blow-molded bottle can be ensured by one-time blow molding, and meanwhile, the bottom of the blow-molded bottle has no butt joint, so that the blow-molded bottle has high integral strength and is not easy to deform and damage; the raw materials adopted by the invention have the characteristics of lower melt index, larger molecular weight, higher strength and the like, and have excellent rigidity-toughness balance performance and good chemical corrosion resistance; in addition, low-pressure blowing is adopted during blow molding, then high-pressure blowing is adopted, and finally the low-pressure blowing mode is adopted for blow molding, so that the uniformity of the wall thickness of the blow molded bottle can be further ensured.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the invention provides the following technical scheme: a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
In the embodiment, the raw material components in the step a comprise, by weight, 50 parts of ethylene-butylene copolymer polyethylene base resin, 4-parts of acetylated triethyl citrate, 3 parts of PP wax, 1 part of antioxidant, 2 parts of nano zinc oxide, and 4 parts of glass beads.
In this example, the drying temperature in step A was 55 ℃ and the drying time was 30 min.
In this example, the melting temperature of the screw of the injection molding machine in step B was 320 ℃.
In this embodiment, in step E, low pressure blowing is first used, then high pressure blowing is used, and finally low pressure blowing is used.
In the present example, the low-pressure blowing pressure was 5kg/cm 2(ii) a The high-pressure blowing pressure is 32kg/cm 2 。
Example two:
a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
In the embodiment, the raw material components in the step a comprise, by weight, 80 parts of ethylene-butylene copolymer polyethylene base resin, 10 parts of acetylated triethyl citrate, 9 parts of PP wax, 3 parts of antioxidant, 6 parts of nano zinc oxide, and 8 parts of glass beads.
In this example, the drying temperature in step A was 65 ℃ and the drying time was 50 min.
In this example, the melting temperature of the screw of the injection molding machine in step B was 340 ℃.
In this embodiment, in step E, low pressure blowing is first used, then high pressure blowing is used, and finally low pressure blowing is used.
In the present example, the low-pressure blowing pressure was 7kg/cm 2 (ii) a The high-pressure blowing pressure is 34kg/cm 2 。
Example three:
a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
In the embodiment, the raw material components in the step a comprise, by weight, 55 parts of ethylene-butylene copolymer polyethylene base resin, 6 parts of acetylated triethyl citrate, 3 parts of PP wax, 2 parts of antioxidant, 3 parts of nano zinc oxide, and 5 parts of glass beads.
In this example, the drying temperature in step A was 57 ℃ and the drying time was 35 min.
In this example, the melting temperature of the screw of the injection molding machine in step B was 325 ℃.
In this embodiment, in step E, low pressure blowing is first used, then high pressure blowing is used, and finally low pressure blowing is used.
In the present example, the low-pressure blowing pressure was 5kg/cm 2(ii) a The high-pressure blowing pressure is 34kg/cm 2 。
Example four:
a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
In the embodiment, the raw material components in the step a comprise, by weight, 75 parts of ethylene-butylene copolymer polyethylene base resin, 9 parts of acetylated triethyl citrate, 8 parts of PP wax, 2 parts of antioxidant, 5 parts of nano zinc oxide, and 7 parts of glass beads.
In this example, the drying temperature in step A was 62 ℃ and the drying time was 45 min.
In this example, the melting temperature of the screw of the injection molding machine in step B was 335 ℃.
In this embodiment, in step E, low pressure blowing is first used, then high pressure blowing is used, and finally low pressure blowing is used.
In the present example, the low-pressure blowing pressure was 7kg/cm 2 (ii) a The high-pressure blowing pressure is 34kg/cm 2 。
Example five:
a bottle blowing process for hand cream with a seamless bottom comprises the following steps:
A. mixing the raw materials, adding the mixture into a drying tank, and uniformly stirring and drying;
B. adding the dried raw materials into an injection molding machine, melting the raw materials through a screw of the injection molding machine to obtain a melt, injecting the melt into an injection mold, and cooling to obtain a bottle blank;
C. putting the bottle blank into a blow molding die, and heating and softening the bottle blank in a hot air blowing mode;
D. pulling the softened bottle blank to attach the bottle blank to the blow molding mold;
E. blowing air through an air blowing system of a bottle blowing machine to blow the bottle blank into a hand cream blow molded bottle in one step;
F. the blown bottles were then inspected for quality and classified.
In the embodiment, the raw material components in the step a comprise, by weight, 65 parts of ethylene-butylene copolymer polyethylene base resin, 7 parts of acetylated triethyl citrate, 6 parts of PP wax, 2 parts of antioxidant, 4 parts of nano zinc oxide, and 6 parts of glass beads.
In this example, the drying temperature in step A was 60 ℃ and the drying time was 40 min.
In this example, the melting temperature of the screw of the injection molding machine in step B was 330 ℃.
In this embodiment, in step E, low pressure blowing is first used, then high pressure blowing is used, and finally low pressure blowing is used.
In the present example, the low-pressure blowing pressure was 6kg/cm2(ii) a The high-pressure blowing pressure is 33kg/cm2。
Experimental example:
blow molded bottles made using the examples of the invention were tested for performance and the data obtained are as follows:
elongation at Break (%)
Compressive Strength (MPA)
Example one
480
18.2
Example two
487
18.9
EXAMPLE III
490
19.2
Example four
490
19.1
EXAMPLE five
510
19.5
In conclusion, the processing technology adopted by the invention is simple to operate, the uniformity of the wall thickness of the blow-molded bottle can be ensured by one-time blow molding, and meanwhile, the bottom of the blow-molded bottle has no butt joint, so that the blow-molded bottle is high in overall strength and not easy to deform and damage; the raw materials adopted by the invention have the characteristics of lower melt index, larger molecular weight, higher strength and the like, and have excellent rigidity-toughness balance performance and good chemical corrosion resistance; in addition, low-pressure blowing is adopted during blow molding, then high-pressure blowing is adopted, and finally the low-pressure blowing mode is adopted for blow molding, so that the uniformity of the wall thickness of the blow molded bottle can be further ensured.
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.
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