注塑外模具廠在（zài）注塑生產過程中常常遇到產品頂白的現象，很多注塑廠家遇上這種頂白現象時，為了趕貨隻好作臨時的辦法就是使用脫模劑（jì）。但使用脫模劑又會直接影響產品的（de）外觀，甚用多了會破產品的塑料性質從而降低產品的日後使用功（gōng）效。而且使用脫模劑也（yě）增加了生產成本。所以，加工廠要產品頂白現象建議是從模具頂出結（jié）構入手。

Injection mold factories often encounter the phenomenon of product top white in the injection production process. When many injection mold manufacturers encounter this phenomenon, they have to make a temporary solution in order to catch up with the goods is to use release agent. However, the use of release agent will directly affect the appearance of the product, and even more use will damage the plastic properties of the product, thus reducing the future use efficiency of the product. And the use of release agent also increases the production cost. Therefore, the suggestion for the processing plant to solve the product top white phenomenon is to start with the mold ejection structure.

廠家要徹底產品頂白現象，必須（xū）檢（jiǎn）查在頂白的部位（wèi）是否能加頂針，是否有骨位沒有省光省（shěng）滑，如果有骨（gǔ）位還存在火花紋沒省幹淨是易（yì）造成頂白的。再有一個原因是產品某部位出模斜度不夠，如果是這個原因就必須重新加工（gōng），保證有足夠的出模斜度才可以切斷頂白現象的，否則（zé）任你如何省光省滑或加（jiā）頂針（zhēn）都無法徹底頂白的（de）。

In order to completely solve the problem of product top whiteness, the manufacturer must check whether a thimble can be added at the top whiteness part, whether there is a bone position that does not save light and slip, and if there is a bone position that still has spark lines, it is easy to cause top whiteness. Another reason is that a certain part of the product has insufficient mold inclination. If this is the reason, it must be reprocessed to ensure that there is enough mold inclination before the top white phenomenon can be cut off. Otherwise, no matter how you save light and slip or add a thimble, the top white problem can not be completely solved.

塑件出（chū）現頂（dǐng）白現（xiàn）象的原因主要是製品粘模力較大,而塑件上頂出部位致頂杆頂出位置產生白痕。山東模具製造廠家給您（nín）分（fèn）析下具體的原因和（hé）改善方法，如下（xià）：

The main reason for the top white phenomenon of plastic parts is that the product has a large mold adhesion force, and the top part of the plastic parts causes white marks on the top position of the ejector rod. The Shandong mold manufacturer will analyze the specific causes and improvement methods for you, as follows:

1，後模（mó）溫度太（tài）低或太高：調整合（hé）適的模溫。

1. The rear mold temperature is too low or too high: adjust the appropriate mold temperature.

2，頂（dǐng）出速度過快：減慢頂（dǐng）出速度。

2. Too fast ejection speed: slow down the ejection speed.

3，有脫模倒角：檢修模具(拋光)。

3. With demoulding chamfer: repair the mold (polishing).

4，成品頂出不（bú）平衡（斷頂針（zhēn）板彈簧）：檢修模具（使（shǐ）頂出平（píng）衡）。

4. The ejection of finished products is unbalanced (the ejector pin plate spring is broken): repair the mold (make the ejection balanced).

5，頂針數量不夠或位置不當：增加頂針數量或改變頂針位置。

5. Insufficient number or improper position of ejector pins: increase the number of ejector pins or change the position of ejector pins.

6，脫模時模具產生（shēng）真空現象：清理頂針孔內汙漬，改善進氣效果。

6. Vacuum occurs in the mold during demoulding: clean the dirt in the ejector pin hole to improve the air inlet effect.

7，成品骨位、柱位粗糙（倒扣）：拋光各骨位及（jí）柱位。

7. The finished bone position and column position are rough (inverted): polish each bone position and column position.

8，注射壓（yā）力或保壓壓力（lì）過大：適（shì）當降低其（qí）壓力。

8. Excessive injection pressure or holding pressure: reduce the pressure appropriately.

9，成品（pǐn）後模脫模斜度過小：增大後模脫模斜度。

9. The demoulding slope of the finished product rear mold is too small: increase the demoulding slope of the rear mold.

10，側滑塊動作時間或位置不當：檢修模具（使抽芯動作正常）。

10. Improper action time or position of the side slider: repair the mold (make the core pulling action normal).

11，頂（dǐng）針麵積太小或頂出速度過（guò）快：增（zēng）大頂針麵積或減慢頂出速度。

11. The ejector pin area is too small or the ejection speed is too fast: increase the ejector pin area or slow down the ejection speed.

12，末段的注射速度過快（毛刺）：減（jiǎn）慢較後一段注（zhù）射速度。

12. The injection speed of the last section is too fast (Burr): it slows down the injection speed of the later section.

以上便是注塑加工產品出現頂白的原因和方法，那麽如果您想了（le）解更多信息，就來關注我們網站www.lsjtcyjt.cn吧（ba），讓您滿載（zǎi）而歸！

These are the reasons and solutions for the top white of injection molding products. If you want to learn more, please follow our website www.sdlqmj COM, let you return with a full load!