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Plastic bottle blowing process

A technology of plastic bottles and crafts, which is applied in the direction of household components, applications, household appliances, etc., can solve the problems of uneven surface thickness of finished products, large social demand, complex processing technology, etc., and achieve no flash, high productivity, and thick wall uniform effect

Inactive Publication Date: 2018-12-07
平湖市浩鑫塑胶股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PET is the abbreviation of polyethylene terephthalate. The plastic material of PET is a polymer produced by the combination of terephthalic acid and ethylene glycol. PET plastic is light in weight, high in transparency, impact resistant and not easy to break and other characteristics, PET plastic bottles are widely used in daily necessities, daily chemical packaging, health care, beverages, mineral water, reagents and other fields. This kind of bottle has a large social demand, and the existing processing technology is complicated, and it is easy to produce preforms during processing. The defects of whitish bottom and uneven surface thickness of the finished product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A blow molding process for plastic bottles, comprising: the following steps:

[0033] Step 1: The production of the preform mold, put the raw materials into the barrel, and then heat the raw materials in the barrel. After the raw materials are heated, inject the raw materials into the injection mold, and take them out after the raw materials in the injection mold are cooled and solidified. Obtain plastic bottle preform;

[0034] Step 2: Blow molding: Take out the heated tube blanks in order, put the first pair into the bottle mold jaws and clamp them firmly, and press the start button;

[0035] Step 3: The bottle blowing action includes: closing the film → sealing → releasing the rod → blowing air → exhausting → opening → raising the rod → opening the mold → stopping the program;

[0036] Step 4: Take out the blown bottle, check whether it is qualified, then put the second pair of heated tube blanks into the mold, press the start button to start the second cycle produc...

Embodiment 2

[0082] A blow molding process for plastic bottles. The formula of raw materials includes: 60 parts of polypropylene; 15 parts of PP-based elastomer; 2 parts of organotin stabilizer, 1 part of polypropylene auxiliary agent, and 0.5 part of antioxidant.

[0083] The difference from Example 1 is that in this solution, the number of parts of PP-based elastomer is adjusted from 20 parts to 15 parts, and the number of organotin stabilizers is adjusted from 5 parts to 2 parts. The applicant found that adjusting the above two components In the future, the transparency and elasticity of plastic bottles can be improved.

Embodiment 3

[0085] A blow molding process for plastic bottles. The formula of raw materials includes: 70 parts of polypropylene; 18 parts of PP-based elastomer; 4 parts of organotin stabilizer, 1 part of polypropylene auxiliary agent, and 0.2 parts of antioxidant.

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Abstract

The invention relates to a plastic bottle blowing process. The plastic bottle blowing process comprises the following steps of (1) manufacturing a bottle preform mold, putting a raw material into a charging barrel, heating the raw material in the charging barrel, injecting the raw material into an injection mold and taking out the raw material in the injection mold after the raw material is cooledand solidified to obtain plastic bottle preforms; (2) conducting blow molding, specifically, taking out heated pipe blanks in sequence, putting the first pair of pipe blanks into bottle mold clamp mouths to be clamped stably and pressing a start button; (3) bottle blowing, wherein the bottle blowing process comprises mold closing, mouth sealing, rod dropping, air blowing, air discharging, mouth opening, rod rising, mold opening and program stopping; and (4) taking out blown bottles, detecting whether the blown bottles are qualified or not, putting the second pair of heated pipe blanks into the mold, pressing the start button to conduct second circulating production. Through the plastic bottle blowing process provided by the invention, the processing bottles are uniform in wall thickness and free of flashes and postprocessing. The bottoms of plastic parts do not have joint seams. The strength is high, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of plastic bottle body blowing, and in particular relates to a plastic bottle blowing process. Background technique [0002] With the continuous advancement of technology and the scale of production, the degree of automation of PET blow molding machines is getting higher and higher, and the production efficiency is also getting higher and higher. The production capacity of the equipment has been continuously improved, from the previous production of thousands of bottles per hour to the current production of tens of thousands of bottles per hour. The operation has also been developed from the manual button type in the past to the current full computer control, which greatly reduces the difficulty of process operation and increases the stability of the process. [0003] PET is the abbreviation of polyethylene terephthalate. The plastic material of PET is a polymer produced by the combination of terephthalic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/06B29C49/78B29C45/60C08L23/12C08L101/02C08K5/57
CPCC08L23/12B29C45/60B29C49/06B29C49/783B29C49/786B29L2031/7158C08L2201/10C08L101/02C08K5/57B29C2049/023
Inventor 卢义平
Owner 平湖市浩鑫塑胶股份有限公司
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