當用高粘度材料（liào）成型（xíng）厚壁產品時，注塑模具產品表麵的橘皮或表麵（miàn）起皺缺陷（xiàn）一（yī）般發（fā）生在流道末端。例如注塑模具產品在注塑過程中，如果熔體流動（dòng）速（sù）率過低，注（zhù）塑模（mó）具就會失效。加工品表麵（miàn）會迅速（sù）凝（níng）固，隨著流動阻力的增大，熔體前端流（liú）動變得不均勻，導（dǎo）致先凝固的外（wài）層材料不（bú）能充分接觸型腔壁，導致皺紋。這些褶皺在固化和（hé）包裝（zhuāng）後成為無法修複的缺陷（xiàn）。

When thick wall products are molded with high viscosity materials, orange peel or surface wrinkling defects usually occur at the end of the runner. For example, in the injection process of injection mold products, if the melt flow rate is too low, the injection mold will fail. The surface of the processed product will solidify rapidly. With the increase of flow resistance, the flow at the front end of the melt becomes uneven, resulting in that the solidified outer material can not fully contact the cavity wall, resulting in wrinkles. These folds become irreparable defects after curing and packaging.

注塑模具加工產品表麵的橘皮缺陷影響表麵外觀。所以在此建（jiàn）議您采用提高熔體溫度、提高注射速度（dù）、適當提（tí）高注塑（sù）模具加工溫度等方法來這一缺陷。

Orange peel defects on the surface of injection mold products affect the surface appearance. Therefore, it is recommended that you solve this problem by increasing the melt temperature, increasing the injection speed and appropriately increasing the processing temperature of the injection mold.

此外模具設計缺陷也會在澆口附近產（chǎn）生暗斑。澆口處尖銳（ruì）的轉角能夠通過改變半徑來避免（miǎn），在設計時（shí）要留心澆口的位置和直（zhí）徑，看看（kàn）澆（jiāo）口的設計是否合適。

In addition, mold design defects will also produce dark spots near the gate. Sharp corners at the gate can be avoided by changing the radius. Pay attention to the position and diameter of the gate in the design to see if the gate design is appropriate.

暗斑不但會發生在澆口位置，而且也經常會在製品尖銳的轉角形成後出現。例如，製品的尖銳轉（zhuǎn）角表麵一般非常光滑，但（dàn）是在其後麵就非常灰（huī）暗且粗糙。這也（yě）是由於過（guò）高的流速和注射速度致使冷卻表麵層被內部流體取代發生滑動而（ér）造（zào）成的（de）。

Dark spots not only occur at the gate, but also often occur after sharp corners of the product are formed. For example, the sharp corner surface of the product is generally very smooth, but behind it is very gray and rough. This is also caused by the sliding of the cooling surface layer replaced by the internal fluid due to the high flow rate and injection speed.

再（zài）次采用分步注（zhù）射並逐漸增加（jiā）注（zhù）射速度。佳的方法（fǎ）是（shì）允許熔（róng）體（tǐ）隻是（shì）在流過銳角邊緣後其速度才開（kāi）始增加。

It is again recommended to use step-by-step injection and gradually increase the injection speed. A good method is to allow the melt to increase its velocity only after flowing through the sharp edge.

對於（yú）注塑加（jiā）工製品來說，在有紋理的製品（pǐn）表麵，其光澤的不同（tóng）是（shì）為（wéi）明顯的。即使模具的表麵十分均勻，不規則的光澤也可能出現在製品上（shàng）。也就是說，製品某些部位的模具表麵效果沒有很好地得以重現。

For injection molded products, the difference in gloss is obvious on the surface of textured products. Even if the surface of the mold is very uniform, irregular gloss may appear on the product. In other words, the mold surface effect of some parts of the product is not well reproduced.

另外，濟南注塑模具廠家提醒，熔體不充分（fèn）的排氣也是造成此缺陷的一個原因。“橘（jú）皮”或者表麵起皺缺陷一般發生在用（yòng）高粘度材（cái）料成型厚（hòu）壁製品時的流（liú）道末端。在注射（shè）過程中，若熔體流動速度過低，製品表麵會迅速固化。

In addition, Jinan injection mold manufacturers remind that insufficient exhaust of melt is also a reason for this defect. "Orange peel" or surface wrinkling defects usually occur at the end of the runner when forming thick wall products with high viscosity materials. During the injection process, if the melt flow rate is too low, the product surface will solidify rapidly.

隨著流動阻力的加大，熔體前端流將會變得不均勻，致（zhì）使先固化的外層材料不能與型腔壁充分（fèn）接觸，從而產生了皺褶。這些皺褶經過（guò）固（gù）化和保壓後就會變成不（bú）可的（de）缺（quē）陷。對於該（gāi）缺陷，的方法是提高熔體溫度並且提高注（zhù）射速度。

With the increase of flow resistance, the melt front-end flow will become uneven, so that the solidified outer material can not fully contact with the cavity wall, resulting in wrinkles. These wrinkles will become irreparable defects after curing and pressure maintaining. For this defect, the solution is to increase the melt temperature and the injection speed.

模具注塑加工製品表麵橘皮及暗斑存在原因以及怎麽處理的相關內容都（dōu）給介（jiè）紹了，您可以作為參（cān）考使用，當然了解更多信息可以關（guān）注我們網站www.lsjtcyjt.cn！

The causes of orange peel and dark spots on the surface of injection molded products and how to deal with them are introduced. You can use them as a reference. Of course, for more information, you can pay attention to our website www.sdlqmj com！