Electrostatic spraying method and device of mold release agent

A technology of electrostatic spraying and release agent, which is applied to the device for coating liquid on the surface, liquid spraying equipment, coating, etc. It can solve the problems of excessive alkane emissions, large workshop odor, and poor transmission rate, etc., and achieve reduction in dosage, The effect of reducing the operating intensity and increasing the transfer rate

Active Publication Date: 2015-02-04
YANFENG ADIENT SEATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditional mold release agent spraying - air spraying has a poor upper mold rate (only up to 25%) and poor transfer rate, causing nearly 75% of the mold r

Method used

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  • Electrostatic spraying method and device of mold release agent
  • Electrostatic spraying method and device of mold release agent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] Take the car seat polyurethane foam mold as an example to illustrate, the mold size is: length 380mm, width 380mm, height 100mm.

[0029] A method for electrostatic spraying of a release agent includes the following steps:

[0030] (1) Steps to configure release agent:

[0031] It is equipped with a mold release agent, which is prepared from the following raw materials in weight percentage: petroleum ether 95%, paraffin wax 5%, mold release agent resistivity 800 megohm·cm, viscosity 150 centipoise, flash point ≥55°C ;

[0032] (2) Preparation steps:

[0033] Store the release agent prepared in step (1) in a release agent storage tank, and at the same time power the spray gun and ground the mold to be sprayed with the release agent;

[0034] (3) Spraying steps

[0035] First, the mold to be sprayed with the release agent is transported to the spraying position, and at the same time, the release agent storage tank is pressurized to 1 bar by an air pump, and the rel...

Example Embodiment

[0036] Example 2

[0037] Take the car seat polyurethane foam mold as an example to illustrate, the mold size is: length 380mm, width 380mm, height 100mm.

[0038] A method for electrostatic spraying of a release agent includes the following steps:

[0039] (1) Steps to configure release agent:

[0040] It is equipped with a mold release agent, which is prepared from the following raw materials in weight percentage: petroleum ether 96%, paraffin wax 4%, mold release agent resistivity 800 megohm·cm, viscosity 150 centipoise, flash point ≥55°C ;

[0041] (2) Preparation steps:

[0042] Store the release agent prepared in step (1) in a release agent storage tank, and at the same time power the spray gun and ground the mold to be sprayed with the release agent;

[0043] (3) Spraying steps

[0044] First, the mold to be sprayed with the release agent is transported to the spraying position, and at the same time, the release agent storage tank is pressurized to 1 bar by an air pump, and the rel...

Example Embodiment

[0045] Example 3

[0046] Take the car seat polyurethane foam mold as an example to illustrate, the mold size is: length 380mm, width 380mm, height 100mm.

[0047] A method for electrostatic spraying of a release agent includes the following steps:

[0048] (1) Steps to configure release agent:

[0049] It is equipped with a mold release agent, which is prepared from the following raw materials in weight percentage: petroleum ether 97%, paraffin 3%, mold release agent resistivity 800 megohm·cm, viscosity 150 centipoise, flash point ≥55°C ;

[0050] (2) Preparation steps:

[0051] Store the release agent prepared in step (1) in a release agent storage tank, and at the same time power the spray gun and ground the mold to be sprayed with the release agent;

[0052] (3) Spraying steps

[0053] First, the mold to be sprayed with the release agent is transported to the spraying position, and at the same time, the release agent storage tank is pressurized to 1 bar by an air pump, and the release...

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Abstract

The invention discloses an electrostatic spraying method of a mold release agent. The method comprises the following steps: (1) preparing the mold release agent; (2) preparing; (3) spraying. After the electrostatic spraying method of the mold release agent is used, the mold attachment rate of the mold release agent is greatly improved (nearly reaching 70 percent), the transfer rate is improved, the using amount of the mold release agent is reduced, and the manufacturing cost is also reduced while the operation strength of workers is reduced. The workshop environment and the alkane emission are also effectively improved, and the smell and VOC (Volatile Organic Compounds) of foams are improved. The invention also discloses a device used in the electrostatic spraying method of the mold release agent.

Description

technical field [0001] The invention relates to the technical field of mold release agent spraying in a polyurethane foaming process, in particular to a release agent electrostatic spraying method and device in a polyurethane foaming process. Background technique [0002] At present, in domestic polyurethane foaming, the process of spraying release agent is mainly realized by air spraying. [0003] Air spraying, also known as air spraying, ordinary spraying, see figure 1 , Air spraying is to rely on the airflow of compressed air to form a negative pressure at the nozzle 1, take the release agent out of the storage tank 2, atomize the release agent into a mist, and spray it on the surface of the mold 3 with the help of the airflow a method of Due to the effect of gravity or air flow, the release agent particles will have a spreading effect, so that they will deviate from the target object or be carried away by the surrounding air flow. Therefore, the transfer efficiency of...

Claims

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Application Information

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IPC IPC(8): B05D1/04B05B5/08B29C33/58B29C33/60
Inventor 赵锋浦君才陈东金强徐斌叶辉汤景华
Owner YANFENG ADIENT SEATING CO LTD
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