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21
2025
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What does PPF thickness really mean?
During our work with global PPF buyers and paint protection film distributors, we often hear the same questions:
在生产和销售隐形车衣的过程中，我们发现经常有类似这样的问题：
“Is this model 6.5 mil, 7.5 mil, or 8.5 mil?”
“这个型号是 6.5mil、7.5mil 还是 8.5mil？”
“I only need 7.5 mil.”
“我只需要 7.5mil。”
“I prefer 8.5 mil — is the protection better?”
“我想要 8.5mil，会不会保护效果更好？”
Most people focus only on the thickness number,but many don’t really understand how PPF thickness is produced or why the numbers differ.
大家在选择车衣型号时通常会关注到厚度这个数字，但不一定了解这些厚度是如何做出来的，以及背后的差异原因。
Today, we’ll explain how PPF thickness is formed,and what thickness works best for different markets.
今天我们从工厂角度带大家了解 PPF 厚度是怎样形成的，以及不同厚度适合哪些市场需求。
1. How is PPF thickness created?
1、PPF 厚度是如何形成的？
PPF thickness is not measured at the end — it is defined during the TPU casting process.
PPF 的厚度不是最后随便量出来的，而是在 TPU 流延工艺 中就已经确定了。
The EDI die controls the extrusion volume.
EDI 模头决定挤出量。
More molten TPU → thicker TPU base film
熔融 TPU 越多 → 基膜越厚
Less molten TPU → thinner, softer film
熔融 TPU 越少 → 基膜越薄、更柔软
Line speed controls the stretching ratio.
线速度决定薄膜的拉伸比例。
Higher line speed → thinner film
线速越快 → 薄膜越薄
Lower line speed → thicker film
线速越慢 → 薄膜越厚
Thickness = Extrusion Volume ÷ Line Speed
厚度 = 挤出量 ÷ 线速度
After that, layers such as the adhesive layer, self-healing coating, and top coat are applied.
在此基础上，再叠加 胶水层、自修复涂层、表面功能涂层 等多层结构，
This produces the final thickness: 6.5 mil, 7.5 mil, 8.5 mil.
最终形成我们看到的 6.5mil、7.5mil、8.5mil 厚度。
2. Thickness is not only “more material” — TPU grade matters too.
2、厚度不仅是“用料多少”，还与 TPU 等级有关。
Yes—thicker film uses more TPU material, which improves impact resistance.But flexibility, durability, and installation feel are also determined by TPU grade.
厚的膜确实使用更多的 TPU 原料，提升 抗冲击性。但膜的柔韧度、耐久性和施工手感，也与 TPU 等级 密切相关。
Different thicknesses often use different TPU formulations:
不同厚度通常会搭配不同配方和等级的 TPU：
Softer grades for complex curves
柔软等级适用于复杂曲面施工
Stronger grades for harsh climates or gravel roads
强度更高的等级适用于恶劣道路、砂石环境
So in reality:Performance = Thickness + TPU grade
因此实际上：膜的表现 = 厚度 + TPU 等级
3. Which thickness fits which market?
3、不同厚度分别适合哪些市场？
6.5 mil — Soft & Easy Installation
6.5mil —— 柔软好施工
Best for: urban regions, installers prioritizing speed
适合：城市用车、追求施工效率的市场
7.5 mil — Balanced Performance
7.5mil —— 均衡表现
Balanced between flexibility and protection
柔韧性与保护能力之间保持平衡
Fits most mainstream global markets
适合全球大多数主流市场
8.5 mil — Higher Impact Protection
8.5mil —— 更高的抗冲击能力
More TPU → stronger film
更多 TPU → 更强保护力
Good for gravel roads, high-speed driving, harsh environments
适合砂石路、高速路、环境更恶劣的市场
4. What we offer as a factory
4、作为工厂，我们能为客户做得更多
Most trading companies can only sell “available thicknesses”.But as a PPF manufacturer, we can customize thickness from the production level.
许多贸易商只能销售现有的标准厚度。但作为 PPF 工厂，我们可以从生产工艺层面定制厚度。
We support:
我们支持：
✔ Custom PPF thickness (6.5–8.5 mil)
自定义车衣厚度（6.5–8.5mil）
✔ TPU brand selection: Lubrizol, BASF, Covestro, Huntsman
TPU 品牌可选：路博润、巴斯夫、科思创、亨斯迈
✔ OEM PPF production
OEM 专属产品开发
✔ Private label PPF
品牌专属定制
✔ Film behavior customization (soft / firm / regional preferences)
手感、柔软度、地区定制化调校
If you are choosing thickness for different countries,or planning your own private-label PPF line,we can support from:
如果你正在为不同国家匹配合适的厚度，或想做一款属于自己品牌的 PPF，我们可以从以下环节为你提供支持：
Process design → Material selection → Thickness matching → Sample production
工艺设计 → 材料选型 → 厚度搭配 → 打样测试
Feel free to contact us biaoqing
欢迎随时联系我们。
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