<p id="vlpxl"></p>

<p id="vlpxl"></p>

<p id="vlpxl"></p>

<pre id="vlpxl"></pre>
<p id="vlpxl"><p id="vlpxl"><delect id="vlpxl"></delect></p></p><p id="vlpxl"></p>

<p id="vlpxl"></p>

<pre id="vlpxl"><output id="vlpxl"></output></pre>

<p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p>

<p id="vlpxl"></p>
<pre id="vlpxl"><output id="vlpxl"></output></pre><noframes id="vlpxl"><pre id="vlpxl"><delect id="vlpxl"></delect></pre><p id="vlpxl"></p>

<pre id="vlpxl"><delect id="vlpxl"></delect></pre><noframes id="vlpxl"><pre id="vlpxl"><output id="vlpxl"></output></pre><delect id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></delect><pre id="vlpxl"></pre>

<p id="vlpxl"></p>

<pre id="vlpxl"></pre>

<pre id="vlpxl"><output id="vlpxl"></output></pre>
<output id="vlpxl"></output>
<pre id="vlpxl"></pre><p id="vlpxl"></p>

<pre id="vlpxl"><p id="vlpxl"><output id="vlpxl"></output></p></pre>

<p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p><p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p><pre id="vlpxl"></pre>

<address id="vlpxl"><p id="vlpxl"></p></address>

<pre id="vlpxl"></pre><pre id="vlpxl"><output id="vlpxl"></output></pre>

<output id="vlpxl"><output id="vlpxl"><delect id="vlpxl"></delect></output></output>
<pre id="vlpxl"><output id="vlpxl"></output></pre>
<p id="vlpxl"><p id="vlpxl"><delect id="vlpxl"></delect></p></p>
<p id="vlpxl"><delect id="vlpxl"></delect></p>
圣鑫管業

04

2023

-

01

片材擠出機的工作原理

塑料在排氣螺桿上歷經三個過程;在第一階中塑料經壓縮、加熱達到基本塑化狀態;基本塑化了的塑料在進入排氣段后,由于排氣段螺槽突然加深,加上真空泵的抽吸作用,壓力急劇降低成負壓狀態。塑料熔體內受壓縮的氣體和氣化了的揮發物在熔體中發泡,在排氣段螺桿的攪拌下氣泡破裂,逸出的氣體從排氣口被真空泵抽走;經過排氣處理的熔料通過第二壓縮段和第二計量段,重新受到壓縮和進一部均化,從機頭擠出得到所需的制品。


作者:

塑料在排氣螺桿上歷經三個過程;在第一階中塑料經壓縮、加熱達到基本塑化狀態;基本塑化了的塑料在進入排氣段后,由于排氣段螺槽突然加深,加上真空泵的抽吸作用,壓力急劇降低成負壓狀態。塑料熔體內受壓縮的氣體和氣化了的揮發物在熔體中發泡,在排氣段螺桿的攪拌下氣泡破裂,逸出的氣體從排氣口被真空泵抽走;經過排氣處理的熔料通過第二壓縮段和第二計量段,重新受到壓縮和進一部均化,從機頭擠出得到所需的制品。

精品91自产拍在线观看二区|亚洲日韩一区二区三区四区|亚洲爆乳精品无码一区二区|欧美精品日韩精品一卡
<p id="vlpxl"></p>

<p id="vlpxl"></p>

<p id="vlpxl"></p>

<pre id="vlpxl"></pre>
<p id="vlpxl"><p id="vlpxl"><delect id="vlpxl"></delect></p></p><p id="vlpxl"></p>

<p id="vlpxl"></p>

<pre id="vlpxl"><output id="vlpxl"></output></pre>

<p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p>

<p id="vlpxl"></p>
<pre id="vlpxl"><output id="vlpxl"></output></pre><noframes id="vlpxl"><pre id="vlpxl"><delect id="vlpxl"></delect></pre><p id="vlpxl"></p>

<pre id="vlpxl"><delect id="vlpxl"></delect></pre><noframes id="vlpxl"><pre id="vlpxl"><output id="vlpxl"></output></pre><delect id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></delect><pre id="vlpxl"></pre>

<p id="vlpxl"></p>

<pre id="vlpxl"></pre>

<pre id="vlpxl"><output id="vlpxl"></output></pre>
<output id="vlpxl"></output>
<pre id="vlpxl"></pre><p id="vlpxl"></p>

<pre id="vlpxl"><p id="vlpxl"><output id="vlpxl"></output></p></pre>

<p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p><p id="vlpxl"><output id="vlpxl"><menuitem id="vlpxl"></menuitem></output></p><pre id="vlpxl"></pre>

<address id="vlpxl"><p id="vlpxl"></p></address>

<pre id="vlpxl"></pre><pre id="vlpxl"><output id="vlpxl"></output></pre>

<output id="vlpxl"><output id="vlpxl"><delect id="vlpxl"></delect></output></output>
<pre id="vlpxl"><output id="vlpxl"></output></pre>
<p id="vlpxl"><p id="vlpxl"><delect id="vlpxl"></delect></p></p>
<p id="vlpxl"><delect id="vlpxl"></delect></p>