做弹性体的圈子里也有条看不见的鄙视链：做TPE的看不起做SEBS的，做SEBS的看不起做POE的。但说出来你可能不信，真正被汽车厂工程师追着要货的，偏偏是圈子里最“小众”的那一档——聚醚嵌段酰胺，也就是PAE。
正牌Pebax一柜报价能让人当场沉默，回料PAE做结构件又不敢上量产线，可就是这么个“高不成低不就”的材料，副牌料在市场上被抢得厉害。这篇就把PAE副牌这点事讲透。
一、PAE是什么，全球格局有多集中
PAE，学名聚醚嵌段酰胺（PEBA），是一种热塑性弹性体。说白了它把聚酰胺硬段和聚醚软段嵌在同一条分子链上，硬段扛强度、软段给弹性，结果就是耐低温回弹好、抗弯曲疲劳、还耐油耐化学，零下三四十度照样软得下来。
全球能稳定做PAE原生料的厂家屈指可数。按市场份额口径，法国阿科玛（Arkema）一家独大，Pebax品牌在全球PEBA市场占比约两成到四成（不同机构口径有差异，中国区份额更高）；德国赢创（Evonik）凭Vestamid E系列紧追其后，两家合计拿走全球八成以上销量；瑞士EMS-GRIVORY的Grilamid E系列守着第三梯队，日本宇部（UBE）也有份。这个赛道不是谁都能进的。
为啥PAE这么金贵？跟TPU比，它耐水解耐油、低温回弹还更好；跟TPEE比，它软而不黏、密度还轻一截。汽车厂要的那种“零下三十度不脆、反复弯折不断、又比橡胶轻”的件，PAE几乎是绕不开的答案。也正因为能打，正牌价格一直下不来。
二、PAE副牌到底是什么，别跟回料混
PAE副牌不是弹性不够的残次品，是同一套嵌段聚合工艺里，出厂检验没完全踩中某一项指标的原厂原生粒子。它有四大来源：装置开停车的头尾料、牌号切换的过渡料、工艺波动导致熔指或硬度小幅越线的批次、副线尾料。
关键要掰扯清楚：PAE副牌分子结构和正牌一模一样，还是原厂原生粒子，只是邵氏硬度、回弹率或色相在化验时偏了半格，跟回料、再生料完全两码事。回料是加工边角料再造粒，已经吃过一遍热历史；再生料是回收废旧塑料，性能飘得没边。包装上PAE这类弹性体常见小包装，也有大包装。
副牌里头还分档。同一牌号的副牌，漂得少的那一档叫精选副，漂得多一点的叫普通副，价格跟着分档走。做对尺寸和外观有要求的结构件，优先挑精选副；做配色件、内缓冲件，普通副也能用。这一档之差，采购下单前得问清楚。
三、阿科玛Pebax：把PAE做成招牌的那家
先说头把交椅阿科玛。这家法国公司是Pebax的原创者，也是把PAE做成高端运动鞋中底、医疗导管、汽车密封条的那家。Pebax牌号谱系很全，从高硬度到超软都有，还有生物基的Pebax Rnew系列。
阿科玛的PAE副牌特点是什么？因为它体量最大、牌号切换频繁，副牌料的来源也最稳。常见的是硬度偏一两档或回弹率小幅波动的那一档，做汽车内饰软触件、底盘隔音件、密封缓冲件完全够用，做不了医疗植入级和旗舰跑鞋中底，但量产结构件绰绰有余。
四、赢创Vestamid E：更“刚”的那一挂
再说德国赢创。赢创的Vestamid E系列走的是高耐热、耐水解路线，在汽车轻量化和可穿戴密封件上扎得很深。它的底子是聚酰胺工程塑料的老本行，所以PAE做得比别人更“刚”一点，耐热和尺寸稳定性是卖点。
赢创副牌的特点是批次干净、指标漂移小，适合对尺寸精度和耐温有要求的结构件。缺点是货量不如阿科玛大，想要稳定拿货得盯紧它的排产窗口。
五、EMS-GRIVORY Grilamid E：小而精
第三家是瑞士EMS-GRIVORY。这家是聚酰胺的老牌劲旅，Grilamid E系列在精密小件、电子电器和汽车功能件上口碑扎实，它的特点是牌号细分极细，硬度梯度做得漂亮。
EMS的副牌量不大，但胜在“精”——常出的是色相或熔融流动性小幅偏差的料，适合做配色件、外观要求不那么苛刻的内饰件和小结构件。想找它的副牌，得有耐心等批次。
六、买PAE副牌，坑主要在这三处
一是别拿副牌去顶正牌的高要求场景。副牌做不了医疗级、做不了旗舰跑鞋中底，硬上就是给后面埋雷。
二是硬度别只看标签。PAE副牌最常见的漂移就在邵氏硬度，同一牌号差两度，做出来的手感天差地别，进厂必须实测。
三是要分清原厂副牌和回收料。市场上有人把回料PAE当副牌卖，拉一拉脆不脆、闻一闻有没有焦味、看切面干不干净，心里就有数了。实测建议：熔指、硬度、回弹三项对着用途验，批次留样，别光靠价格下单。
科隆仓库现货｜PAE零担
主推品牌：阿科玛、赢创、EMS-GRIVORY。
主要牌号：Pebax/Pebax Rnew、Vestamid E、Grilamid E。
包装规格：小包副牌与箱装副牌走小包装，大包料/吨包料走吨袋，按车间用量分包装备货。
仓库现货：PAE仓库现货通常在3000-6000吨，其中小包副牌备货500-800吨、箱装副牌备货200-400吨、大包料/吨包料备货2500-4800吨。
供应保障：原厂原包直采，批号随货。
七、选型口诀
1. PAE副牌认准三家，阿科玛、赢创、EMS-GRIVORY才是正主。
2. 硬度实测别信标签，差两度手感全变。
3. 结构件够用就好，医疗和旗舰件别硬顶。
4. 原厂副牌和回料分清楚，脆、焦味、切面脏就pass。
5. 小包装大包装都有，按车间用量订。
八、写在最后
揭阳有家做汽车底盘结构件的客户，之前一直用正牌PAE打缓冲垫块，一吨正牌压下来成本降不下去，换了几批便宜回料又因为低温抗冲不过关，退货率卡在8%上下。后来按阿科玛Pebax副牌的硬度档重新对配方，把缓冲件的邵氏硬度卡在合适区间，低温冲击合格率从原来的82%拉到98.5%，退货率降到0.4%，单件成本还砍了两成多。
这就是把副牌用对位置的账。宁波市科隆新材料有限公司做进口副牌多年，类似的汽车件案子每年过手不少，说白了就是帮你在量产之前把硬度和回弹那两项验明白。
There's an invisible hierarchy of disdain in the elastomer industry: TPE people look down on SEBS companies, SEBS companies look down on POE companies. But you might not believe it, but the ones really chased by automaker engineers are the most "niche" segment in the circle—polyether block amide, or PAE.
Genuine Pebax can leave people speechless for a whole container, but PAE for structural parts doesn't dare to be mass-produced. Yet this "neither high nor low" material is fiercely sought after in the secondary brand market. This article will thoroughly explain the issue of PAE secondary brands.
1. What is PAE? How
PAE concentrated is the global landscape ? Its scientific name is polyether block implant (PEBA), a thermoplastic elastomer. Simply put, it embeds the hard segment of polyamide and the soft segment of polyether into the same molecular chain. The hard segment bears strength, while the soft segment provides elasticity. The result is excellent low-temperature resilience, resistance to flexural fatigue, oil resistance, and chemical resistance, and it can still soften at minus 30 to 40 degrees Celsius.
There are very few manufacturers worldwide that can consistently produce raw PAE materials. In terms of market share, Arkema (France) dominates the market, while Pebax holds about 20% to 40% of the global PEBA market share (different institutions have different standards, with China holding a higher share); Germany's Evonik closely followed with the Vestamid E series, with the two companies together capturing over 80% of global sales; Switzerland's EMS-GRIVORY's Grilamid E series holds the third tier, and Japan's UBE also participates. This track is not open to just anyone.
Why is PAE so precious? Compared to TPU, it is more resistant to hydrolysis and oil, and even better at low temperature rebound; Compared to TPEE, it is softer but not sticky, and its density is much lighter. For automakers that are "not brittle at minus 30 degrees, constantly bent and unceasing, and lighter than rubber," PAE is almost the answer they can't avoid. And precisely because it can compete, the price of the official brand has never dropped.
2. What exactly is PAE secondary brand? Don't mix it with recycled material
PAE secondary brand is not a defective product with poor elasticity; it is original original particles in the same block polymerization process that fail to meet a certain standard during factory inspection. They have four main sources: starting and stopping the unit and tail material, transition material from grade changes, batch melting index or hardness slightly exceeding the line due to process fluctuations, and secondary line residue.
The key is to clarify: the molecular structure of the PAE secondary brand is exactly the same as the genuine brand, still original factory particles, except that the Shore hardness, rebound rate, or hue are half a notch off during testing, completely different from recycled and recycled materials. Recycled material is processed scraps and then pelletized, which has already gone through a hot history; Recycled material is recycled waste plastic, with poor performance. Packaging for elastomers like PAE is common in small packages, but also in large packages.
There are also tiers inside the secondary brand. For sub-brands of the same grade, the one with less bleaching is called a select pair, while the one with more bleaching is called a regular pair. The price follows the tier. For structural parts with precise size and appearance requirements, prioritize selecting the selected pair; For color-matched parts and internal buffer parts, regular pairs can also be used. This difference is so important to ask clearly before placing an order.
3. Arkema Pebax: The company that made PAE its signature brand
Let's start with the top leader, Arkema. This French company is the original creator of Pebax and also made PAE into high-end sports shoe midsoles, medical catheters, and automotive sealing strips. Pebax has a complete range of grades, from high hardness to ultra-soft, and also the bio-based Pebax Rnew series.
What are the characteristics of Arkema's PAE secondary brand? Because it is the largest, frequently switches grades, and has the most stable source of secondary brand materials. The most common is hardness levels that range one or two or slightly fluctuate in rebound rate. It's more than sufficient for automotive interior soft contacts, chassis sound insulation, and sealing buffers. It can't make medical implants, or flagship running shoe midsoles, but it is more than sufficient for mass-produced structural parts.
4. Evonik Vestamid E: The more "tough" type
Now, let's talk about Evonik Germany. Evonik's Vestamid E series follows a high heat resistance and hydrolysis resistance route, deeply penetrating automotive lightweighting and wearable seals. Its foundation is the long-standing polyamide engineering plastics business, so PAE is a bit more "tough" than others, with heat resistance and dimensional stability as selling points.
Evonik's secondary brand features clean batch sizes and minimal indicator drift, suitable for structural parts requiring dimensional accuracy and temperature resistance. The downside is that its volume is not as large as Arkema and requires a close eye on its production scheduling window for stable procurement.
5. EMS-GRIVORY GRILAMID E: Small but refined
The third company is Swiss EMS-GRIVORY. This company is a long-established polyamide powerhouse. The Grilamid E series has a solid reputation in precision small parts, electronics and electrical appliances, and automotive functional parts. Its features include extremely fine grade segmentation and excellent hardness gradients.
EMS sub-plates don't have a large quantity, but they excel in "quality"—they often produce materials with slight deviations in hue or melt flow, suitable for color matching parts, interior parts with less demanding appearance requirements, and small structural parts. If you want to find their sub-plates, you need patience and wait for batches.
6. When buying PAE sub-plates, the main pitfalls are these three points
First, don't use sub-plates to match the high-demand scenarios of the genuine brand. If the sub-brand can't make medical-grade or flagship running shoe midsoles, forcing it will only set up a minefield for the back.
Second, don't just look at the label on hardness. The most common drift on PAE secondary cards is in Shore hardness. A two-degree difference in the same grade results in a huge difference in feel, so you must test it before entering the factory.
Third, distinguish between original sub-brand and recycled material. Some people in the market sell recycled PAE as a sub-brand. Pull it to see if it's crispy, smell for burnt smell, and check if the cut surface is clean—then you'll have a good idea. Test suggestion: Melt finger, hardness, and rebound should be tested against the intended use, keep samples for batches, don't order based solely on price.
Cologne warehouse in-stock | PAE less-than-truckload
Main recommended brands: Arkema, Evonik, EMS-GRIVORY.
Main grades: Pebax/Pebax Rnew, Vestamid E, Grilamid E.
Packaging specifications: Small sub-labels and boxed sub-brands use small packaging; large packages/ton packages are sold in ton bags, sorted by workshop usage for stocking.
Warehouse Stock: PAE warehouse stock is usually 3000-6000 tons, with small sub-brand stocks at 500-800 tons, boxed sub-brands at 200-400 tons, and large packages/ton packs at 2500-4800 tons.
Supply Assurance: Direct procurement from the original factory, batch numbers follow the goods.
VII. Model Selection Tips
1. For PAE sub-brands, choose three main brands: Arkema, Evonik, and EMS-GRIVORY.
2. Don't trust labels for hardness tests; a two-degree difference completely changes the feel.
3. As long as structural parts are sufficient, don't hard-top medical and flagship parts.
4. Distinguish between original sub-brands and recycled parts; skip brittle, burnt, or dirty cut-off surfaces.
5. Both small and large packages are available, ordered according to workshop usage.
8. Final thoughts
Jieyang has a client who makes automotive chassis structural parts. Previously, they always used genuine PAE to make cushioning pads. One ton of genuine brand couldn't lower costs, and after replacing several batches of cheap recycled materials, the low-temperature shock resistance failed to meet standards, with a return rate stuck around 8%. Later, we readjusted the formula according to the hardness level of the Arkema Pebax secondary brand, setting the Shaw hardness of the cushioning parts within the appropriate range. The low-temperature impact pass rate increased from 82% to 98.5%, the return rate dropped to 0.4%, and the unit cost was cut by more than 20%.
This is the account of using the secondary brand correctly. Ningbo Kelong New Materials Co., Ltd. has been doing imported secondary brand for many years and has handled many similar automotive parts cases every year. Simply put, it helps you verify hardness and resilience before mass production
