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PE bottle surface blow molding frosting method

A frosting and machine technology, applied in the field of plastic bottle blow molding, can solve the problems of peeling off, high cost, complicated spraying process, etc., and achieve the effects of saving cost, shortening production cycle, and shortening environmental protection

Active Publication Date: 2019-04-02
ZHEJIANG RUICHANG INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spraying process is complicated, and it also affects the size and function of the bottle. Not only is the cost high, but the paint surface sprayed on the surface is also easy to peel off during use. (Paint) itself is not good for environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: A method for blow molding and sanding the surface of PE bottles, including the following steps: Step (A): Mix HDPE5502 and HDPE571 to form a mixture, and the mass ratio of HDPE5502 and HDPE571 in the mixture is 1:1 . Step (B): Put the mixed material into the blow molding machine, and then heat and preheat the blow molding machine. The preheating temperature of the cylinder in the blow molding machine is 210°C, and the preheating time is 60 Minutes, the preheating temperature of the runner in the bottle blowing machine is 200°C, and the preheating time is 60 minutes, the preheating temperature of the die in the blowing machine is 180°C, and the preheating time is 60 minutes. Step (C): After the preheating is completed, the working current of the blow molding machine works at a frequency of 5HZ to feed the mixture to form a billet. After the feeding becomes smooth, the working current works at a frequency of 2HZ to feed the mixture Heightening to the required ...

Embodiment 2

[0015] Example 2: A method for blow molding and frosting the surface of PE bottles, including the following steps: Step (A): Mix HDPE5502 and HDPE571 to form a mixture, and the mass ratio of HDPE5502 and HDPE571 in the mixture is 3:1 . Step (B): Put the mixed material into the blow molding machine, and then heat and preheat the blow molding machine. The preheating temperature of the cylinder in the blow molding machine is 230 ° C, and the preheating time is 75 Minutes, the preheating temperature of the runner in the bottle blowing machine is 220°C, and the preheating time is 75 minutes, the preheating temperature of the die in the blowing machine is 200°C, and the preheating time is 75 minutes. Step (C): After the preheating is completed, the working current of the blow molding machine works at a frequency of 5HZ to feed the mixture to form a billet. After the feeding becomes smooth, the working current works at a frequency of 2HZ to feed the mixture Heightening to the requir...

Embodiment 3

[0017] Example 3: A method for blow molding and sanding the surface of PE bottles, including the following steps: Step (A): Mix HDPE5502 and HDPE571 to form a mixture, and the mass ratio of HDPE5502 and HDPE571 in the mixture is 1:3 . Step (B): Put the mixed material into the blow molding machine, and then heat and preheat the blow molding machine. The preheating temperature of the cylinder in the blow molding machine is 250°C, and the preheating time is 90 Minutes, the preheating temperature of the runner in the bottle blowing machine is 220°C, and the preheating time is 90 minutes, the preheating temperature of the die in the blowing machine is 220°C, and the preheating time is 90 minutes. Step (C): After the preheating is completed, the working current of the blow molding machine works at a frequency of 5HZ to feed the mixture to form a billet. After the feeding becomes smooth, the working current works at a frequency of 2HZ to feed the mixture Heightening to the required ...

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PUM

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Abstract

The PE bottle surface blow molding frosting method involves a plastic bottle blow molding method, including the following steps: step (A): mix HDPE5502 and HDPE571 to form a mixture; step (B): put the mixture into In the blow molding machine, then heat and preheat the blow molding machine; Step (C): After the preheating is completed, the working current of the blow molding machine works at a frequency of 5HZ to feed the mixture to form a material After the feeding is gradually smooth, the working current works at a frequency of 2HZ to increase the mixture to the required length of the material; step (D): gradually cool down the material during the blowing process of the material until There is an obvious frosting effect on the surface of the material. Compared with the existing technology, this method directly blows the frosted effect on the surface of the bottle body after mixing two kinds of HDPE. Because it is blow molding, it will not affect the size of the bottle body. At the same time, compared with the secondary spraying process, it will Save cost, shorten production cycle and protect the environment.

Description

technical field [0001] The invention relates to a plastic bottle blow molding method, in particular to a method for directly blow molding a frosted surface on the surface of a plastic bottle. Background technique [0002] Conventional PE bottle blow molding uses HDPE5502 raw material, at a material temperature of 190°C-220°C, the preform is extruded through a screw within a certain mixing range, and blown into a special mold by 6-8kg air pressure. The surface of this blow-molded bottle is uneven, the upper and lower sand surfaces are uneven, the handle is not good, and the appearance of the product is simple and ordinary. In order to improve the appearance and feel of the PE bottle, it must be processed by secondary spraying. The secondary spraying is to spray a synthetic body (paint) of a chemical raw material on the surface of the PE bottle to form a paint film with a certain feel and visual effect. However, the spraying process is complicated, and it also affects the siz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/00B29C49/78B29K23/00B29L22/00
CPCB29C49/0005B29C49/0031B29C49/78B29C49/786B29K2023/065B29L2022/00
Inventor 何强朱捷王忠
Owner ZHEJIANG RUICHANG INDAL