凝胶垫一压一个坑，半小时弹不回来。超软凝胶TPE，粘手和永久变形是两道坎。
先给结论：凝胶 TPE 用什么场景，一句话说清
凝胶 TPE 是 TPE 家族里“最软的一档”——硬度以 Shore 00 计（比 Shore A 软一个数量级），手感像果冻、像硅胶、像皮肤。
一句话定位：凝胶 TPE 卖的是“极致的软”，用在缓震、内衬、亲肤接触件上；但它强度低、易粘、难脱模，是“选型错一步、量产哭一路”的材料。
凝胶 TPE 的软，是别的 TPE 给不了的——Shore A 20 已经是普通 TPE 的底线，凝胶 TPE 能到 Shore 00 10-50，也就是“捏得动、拉得开、按得下”。
成人用品、医疗护具、缓震垫、握把内衬、鞋垫，这些“越软越值钱”的场景，是它的主场。
技术金句：凝胶 TPE 的硬度数字越小越值钱，但数字背后的模具和工艺账，越软越大。
凝胶 TPE 的需求这些年涨得快，原因很实在：消费电子和健康消费把“柔软触感”做成了卖点——手机壳要软、耳塞要软、按摩器要软、
康复护具要软，“越软越高级”成了产品经理的共识。
但材料端有个现实：普通 TPE 做软靠堆油分，油多了就析出、就发粘；凝胶 TPE 用特殊配方体系，能把软做出来同时控制析出。
“软而不粘、软而不油”是凝胶 TPE 的竞争力所在，也是它比普通软胶贵的原因。
为什么是超软：Shore 00 的世界怎么读
普通 TPE 用 Shore A 标硬度，凝胶 TPE 用 Shore 00——两个刻度怎么换算？大概感受：Shore 00 60 ≈ Shore A 0-5，Shore 00 20 ≈ 果冻质感。
| 硬度刻度 | 手感 | 典型物 |
|---|
| Shore 00 10-20 | 果冻感，极软 | 缓震垫内芯 |
| Shore 00 20-40 | 软糖感 | 握把内衬、鞋垫 |
| Shore 00 40-60 | 橡皮感 | 护具、密封缓冲 |
| Shore A 0-10 | 最软普通 TPE | 软管、防滑垫 |
超软的代价，藏在三个“难”里：
- 1. 强度难：越软越没强度，撕裂、拉断风险高；
- 2. 加工难：越软越粘模、越难脱模、越容易有流痕；
- 3. 尺寸难：越软收缩和变形越大，公差难控。
凝胶 TPE 的“软”，会改变你对尺寸公差的理解——普通塑料的公差思维在超软料上不适用。壁厚、圆角、脱模角度，都要按“软料”重新设计。
和模具厂沟通时，明确告诉对方这是 Shore 00 的料，别让模具厂按普通 TPE 的习惯开模，开错了改模的钱比料钱贵。
选凝胶 TPE 前先问：这个件真的要这么软吗？ 硬度每软一档，加工难度和废品率就上一个台阶——“够软”和“越软越好”是两回事。
选硬度时有个实用技巧：先做“手感对标”。
拿一组不同硬度的样块（比如 Shore 00 20/30/40），让产品负责人、工程师、销售各摸一遍，选定“目标手感”再反推硬度。
手感这种事，文字描述永远有偏差——“软一点”到底是软多少？样块一摸立刻对齐。
定好目标硬度后，还要确认“公差带”：凝胶 TPE 的硬度波动比普通 TPE 大（油分比例敏感），±5 度的波动能不能接受，要提前说清楚，别等量产再吵。
凝胶垫工况：压重、体温、长期蠕变
温度：凝胶 TPE 耐温一般（连续 60-80℃），怕热不怕冷——加热会变软变形，低温反而保持柔软。
介质：耐水好；耐油一般；高含油配方长期接触溶剂会析出——油析出是凝胶 TPE 的经典投诉，和配方油分等级直接相关。
寿命：强度低、易老化变硬——它是“消耗型”材料，别拿它做 10 年寿命的结构件。
外观：哑光或半透明，触感是核心卖点；但表面易粘灰、易留指纹——这也是它的“性格”。
四个维度里，寿命和加工是它的短板——用对场景是宝，用错场景是坑。
凝胶 TPE 的“软”主要靠高油分配方实现，油分含量越高越软，但析出风险越大——高温环境、长期存放、接触溶剂都会加速析出。
预防办法：一是选低析出等级牌号（配方里用高分子量油或相容性更好的油种）；二是控制使用温度（别长期放车里暴晒）；
三是接触面隔离（外面包一层薄膜或涂层）。
采购时问一句“析出等级”，比问硬度更专业。
对比表：凝胶 TPE vs 邻居们
| 对比项 | 凝胶 TPE | 普通 SEBS 软胶 | 硅胶 | TPU |
|---|
| 硬度 | Shore 00 10-60 | Shore A 20-70 | Shore 00-A 可调 | Shore A 60+ |
| 柔软度 | 极致 | 软 | 极软 | 硬 |
| 强度 | 低 | 中 | 低 | 高 |
| 加工 | 注塑（难脱模） | 注塑 | 硫化（慢） | 注塑 |
| 价格 | 中 | 低 | 高 | 中高 |
| 主打 | 缓震/内衬 | 日常软胶 | 医疗/高端 | 耐磨件 |
**判据一句话：要极致软选凝胶 TPE，要性价比软胶选 SEBS，要极软还耐高温选硅胶，要强度耐磨选 TPU。
硅胶和凝胶 TPE 最像，但硅胶要硫化成型（慢），凝胶 TPE 能注塑（快）——效率是凝胶 TPE 挤掉硅胶市场的主要原因。**
粘手、永久变形、出油：四个坑一次拆
坑一：脱模粘模。 越软越粘，脱模划伤、拉裂是家常便饭。规避：模具抛光、加大拔模角、用脱模剂（或免脱模剂配方），顶出设计要温柔。
坑二：包胶脱层。 超软料包硬基材，粘接力不够就脱。规避：确认牌号是否针对该基材，包胶前表面处理，先试产验证。
坑三：油析出。 高含油配方用久了出油、发粘。规避：选低析出等级牌号，明确油分含量，别只看硬度不看配方。
坑四：尺寸飘。 超软料收缩大、变形大，公差难控。规避：模具预留收缩余量，关键尺寸做加强筋，公差放宽到可接受区间。
凝胶 TPE 的模具设计和普通 TPE 差很多。普通 TPE 脱模角度 1-2 度就够，凝胶 TPE 建议 3-5 度起步；顶出设计要分散受力，别用单点顶出（会把软料顶变形）。
流道和浇口要粗短，减少流动阻力（软料流动性差，浇口细了打不满）。
还有排气——超软料容易困气，排气槽开得足，表面才没有缺料和烧焦。模具是凝胶 TPE 项目的隐形成本，设计对了量产才有希望。
凝胶料到货三笔账，回弹率必测
1. 问硬度刻度：明确是 Shore 00 还是 Shore A——两个刻度差一个数量级，问错就是灾难；
- 2. 问含油量：油分多少？低析出牌号还是普通牌号？缓震和耐析出要分开谈；
- 3. 问模具建议：拔模角、脱模方式、收缩率——供应商给不出模具建议的，选型经验存疑；
- 4. 验收：硬度实测 + 手感样块对比 + 试产脱模验证。
凝胶 TPE 的验收，手感样块比数字更重要——软度数字能骗人，手感样块骗不了。
还有个验收细节：看“恢复性”。
把样块用力捏扁、拉长，松开后观察恢复速度和残余变形——恢复快、基本归位的，说明弹性体系好；恢复慢、留印子的，
说明配方偏软偏油。
这个测试不需要仪器，手就能做，却是凝胶 TPE 质量很直接的检验。
采购时让供应商提供“恢复性”参考评价，到货时自己也捏一捏——手感这件事，信任要建立在样块对比上，而不是话术上。
| 硬度档 | Shore 00 | 手感 | 用途 |
|---|
| 超软 | 0-20 | 果冻 | 减压垫 |
| 中软 | 20-50 | 弹软 | 握把 |
| 软 | 50-80 | 厚实 | 密封 |
| 应用 | 体系 | 判断 |
|---|
| 减压坐垫 | 凝胶 | 推荐 |
| 防撞条 | 凝胶 | 推荐 |
| 密封件 | 视工况 | 评估 |
科隆客户案例：包胶脱层，参数一调手感复现
马鞍山一家改性料应用厂，凝胶 TPE 包胶件批量脱层，返工率居高不下，产线快停了。科隆排查后，问题在模温、料温、保压三组参数没匹配超软料的性格——调整注塑参数后，脱层消失，手感回弹对标样品复现。
超软料的包胶，三成靠料、七成靠参数——模温低了粘不牢，高了流痕，保压大了变形。超软料调试，是“慢工出细活”的活，参数要一点点喂。
凝胶 TPE 的需求，正在从成人用品向消费电子和健康医疗扩散——智能穿戴的软性结构、康复辅具的触感层，都在用超软料。这个赛道量在涨，但门槛也在涨：会做模具配套、能控制析出的供应商，才有长期生意。采购时多考察供应商的模具配套能力，别只看料价。
小结
记住一句话：超软体系不是万能的，但用对场景，它就是不可替代的，收藏起来备查。
凝胶 TPE 是“软到没朋友”的特长生：Shore 00 的极致柔软，缓震内衬的舒适。但软是它的卖点，也是它的脾气——模具、工艺、配方三样伺候好了，它就是手感之王；伺候不好，它就是废品率之王。
前两天接了个电话，客户问：能不能先寄点样？
能。但寄样之前，我们会先问清楚：做什么件、什么硬度、包什么基材、什么工况。
不是流程多，是怕寄错的样，耽误你的判断。
Pressing the gel pad leaves a dent that doesn't spring back for half an hour. Super soft gel TPE, stickiness to the touch and permanent deformation are two hurdles.
Give the conclusion first: In one sentence, explain what scenarios gel TPE is used for.
Gel TPE is the 'softest grade' in the TPE family — its hardness is measured in Shore 00 (an order of magnitude softer than Shore A), and it feels like jelly, like silicone, like skin.
One-line positioning: Gel TPE sells 'ultimate softness' and is used in cushioning, linings, and skin-contact components; however, it has low strength, is sticky, and difficult to demold, making it a material where 'one wrong selection step leads to crying through mass production'.
The softness of gel TPE is something other TPEs can't provide—Shore A 20 is already the baseline for regular TPE, while gel TPE can reach Shore 00 10-50, which means 'can be squeezed, stretched, and pressed down'.
Adult products, medical protective equipment, shock-absorbing pads, grip liners, insoles—these "the softer, the more valuable" scenarios are its main arena.
Technical catchphrase: The lower the hardness number of gel TPE, the more valuable it is, but behind the number, the mold and process costs increase as it gets softer.
The demand for gel TPE has grown rapidly in recent years, and the reason is quite practical: consumer electronics and health products have turned 'soft touch' into a selling point—phone cases need to be soft, earplugs need to be soft, massagers need to be soft,
Rehabilitation braces should be soft, and 'the softer, the more advanced' has become a consensus among product managers.
But there is a reality on the material side: ordinary TPE makes softness by stacking oils, and if there is too much oil, it will exude and become sticky; gel TPE uses a special formula system, which can achieve softness while controlling exudation.
"Soft but not sticky, soft but not greasy" is the competitive advantage of gel TPE, and also the reason why it is more expensive than ordinary soft rubber.
Why It’s Ultra-Soft: How to Read the World of Shore 00
Regular TPE uses Shore A for hardness rating, while gel TPE uses Shore 00——how do you convert between the two scales? Approximate feeling: Shore 00 60 ≈ Shore A 0-5, Shore 00 20 ≈ jelly-like texture.
| Hardness scale | hand feel | typical object |
|---|
| Shore 00 10-20 | Jelly-like, very soft | Shock-absorbing pad core |
| Shore 00 20-40 | Gummy texture | Handle lining, insole |
| Shore 00 40-60 | Rubbery feel | Protective gear, sealing and cushioning |
| Shore A 0-10 | Softest Regular TPE | Hose, non-slip mat |
The cost of being ultra-soft is hidden in three 'difficulties':
- 1. Difficulty with strength: the softer it is, the less strength it has, with a high risk of tearing and breaking;
- 2. Difficult to process: the softer it is, the more it sticks to the mold, the harder it is to demold, and the more likely it is to have flow marks;
- 3. Size difficulty: The softer it is, the greater the shrinkage and deformation, making tolerance hard to control.
The 'softness' of gel TPE will change your understanding of dimensional tolerances—the tolerance thinking of ordinary plastics does not apply to ultra-soft materials. Wall thickness, fillets, and draft angles all need to be redesigned according to 'soft material' principles.
When communicating with the mold factory, make it clear that this is Shore 00 material, and don't let the mold factory start the mold according to the usual TPE practices. If the mold is made incorrectly, the cost of modifying the mold will be more expensive than the material.
Before choosing gel TPE, first ask: Does this part really need to be this soft? For every level of hardness you soften, the difficulty of processing and the scrap rate increase a step—'soft enough' and 'the softer the better' are two different things.
There is a practical tip when choosing hardness: first do a 'hand-feel comparison'.
Take a set of samples with different hardness levels (for example, Shore 00 20/30/40), have the product manager, engineers, and sales each feel them, select the 'target feel,' and then reverse-engineer the hardness.
The feel of something is always somewhat distorted when described in words—just how soft is 'a bit softer'? As soon as you touch the sample piece, you instantly know.
After setting the target hardness, you also need to confirm the 'tolerance zone': the hardness of gel TPE fluctuates more than that of regular TPE (sensitive to oil content), so whether a ±5 degree fluctuation is acceptable needs to be clarified in advance, don’t wait until mass production to argue.
Gel pad working conditions: pressing weight, body temperature, long-term creep
Temperature: Gel TPE generally has moderate heat resistance (continuous 60-80℃), it is sensitive to heat but tolerant to cold—heating will cause it to soften and deform, while low temperatures actually help it remain soft.
Medium: Good water resistance; average oil resistance; high oil content formulations will exude oil after long-term contact with solvents — oil exudation is a classic complaint of gel TPE and is directly related to the grade of oil used in the formulation.
Lifespan: Low strength, prone to aging and hardening—it is a 'consumable' material, don't use it for structural components meant to last 10 years.
Appearance: Matte or semi-transparent, the tactile feel is the core selling point; however, the surface easily attracts dust and fingerprints—this is also its 'character'.
Among the four dimensions, lifespan and processing are its weak points—using it in the right scenario makes it valuable, but using it in the wrong one is a pitfall.
The 'softness' of gel TPE is mainly achieved through a high oil formulation; the higher the oil content, the softer it is, but the greater the risk of oil exudation—high-temperature environments, long-term storage, and contact with solvents will all accelerate exudation.
Preventive measures: First, choose low-deposition grade brands (use high molecular weight oils or oils with better compatibility in the formula); second, control the usage temperature (do not leave it in the car under intense sunlight for a long time).
Third is surface isolation (wrapped with a thin film or coating on the outside).
When purchasing, asking 'precipitation grade' is more professional than asking about hardness.
Comparison Table: Gel TPE vs Neighbors
| Comparison item | Gel TPE | Ordinary SEBS soft rubber | Silicone | TPU |
|---|
| Hardness | Shore 00 10-60 | Shore A 20-70 | Shore 00-A Adjustable | Shore A 60 |
| Softness | Ultimate | soft | Extremely soft | hard |
| Intensity | Low | middle | Low | Tall |
| Processing | Injection molding (difficult to demold) | injection molding | Vulcanization (slow) | injection molding |
| Price | middle | Low | Tall | Medium-high |
| main focus | Cushioning/Lining | Daily soft gel | Medical/High-end | wear-resistant part |
**One-sentence criterion: For extremely soft gel, choose TPE; for cost-effective soft rubber, choose SEBS; for very soft yet high-temperature resistant, choose silicone; for strength and wear resistance, choose TPU.
Silicone is most similar to gel TPE, but silicone needs to be vulcanized and molded (slow), while gel TPE can be injection molded (fast) — the main reason gel TPE is taking over the silicone market is efficiency.
Sticky, permanently deformed, oily: avoid all four traps at once
Pitfall 1: Sticking during demolding. The softer it is, the stickier it becomes; scratches and tearing during demolding are common occurrences. Avoidance: polish the mold, increase the draft angle, use a release agent (or a release-agent-free formula), and ensure gentle ejection design.
Pitfall 2: Coating delamination. Ultra-soft material coated on a hard substrate will delaminate if adhesion is insufficient. Avoidance: Confirm whether the grade is suitable for the substrate, perform surface treatment before coating, and conduct a trial production for verification.
Pitfall 3: Oil separation. High oil content formulas will release oil and become sticky after prolonged use. Avoidance: Choose grades with low oil separation, clearly know the oil content, and don’t just look at hardness while ignoring the formula.
Pitfall 4: Size deviation. Ultra-soft materials shrink and deform significantly, making tolerances difficult to control. Avoidance: Allow for shrinkage in the mold, add ribs to key dimensions, and relax tolerances to an acceptable range.
The mold design for gel TPE is very different from regular TPE. For regular TPE, a draft angle of 1-2 degrees is enough, while for gel TPE, a starting angle of 3-5 degrees is recommended; the ejection design should distribute the force, and single-point ejection should be avoided (it can deform the soft material).
Runners and gates should be thick and short to reduce flow resistance (soft materials have poor fluidity, and if the gate is too thin, it cannot be filled).
Also, venting—super soft materials easily trap air, so the vent grooves need to be sufficient; only then will the surface be free of missing material and burning. The mold is a hidden cost in gel TPE projects, and only with proper design is mass production feasible.
Three accounts for gel material arrivals, rebound rate must be tested
1. Ask about the hardness scale: clarify whether it is Shore 00 or Shore A—these two scales differ by an order of magnitude, asking incorrectly would be disastrous;
- 2. Ask about the oil content: How much oil is there? Is it a low-bleed grade or a regular grade? Damping and bleed resistance should be discussed separately.
- 3. Inquire about mold recommendations: draft angle, demolding method, shrinkage rate — if the supplier cannot provide mold recommendations, their selection experience is questionable.
- 4. Acceptance: Actual hardness measurement, comparison of feel sample blocks, trial production demolding verification.
For the acceptance of gel TPE, hand-feel samples are more important than numbers—the softness numbers can be deceptive, but hand-feel samples cannot.
There is also an acceptance detail: look at the 'restorability'.
Forcefully pinch and stretch the sample block, then observe the recovery speed and residual deformation after releasing it — if it recovers quickly and basically returns to its original shape, it indicates a good elastic system; if it recovers slowly and leaves marks,
Indicates the formula is relatively soft and oily.
This test does not require any instruments and can be done by hand, yet it is a very direct way to check the quality of gel TPE.
When purchasing, have the supplier provide 'restorative' reference evaluations, and when the goods arrive, feel them yourself — regarding the sense of touch, trust should be built on comparing sample pieces, not on words.
| Hardness setting | Shore 00 | feel | Purpose |
|---|
| Super soft | 0-20 | Jelly | pressure relief pad |
| ChinaSoft | 20-50 | soft to the touch | Handle |
| soft | 50-80 | Thick and solid | Seal |
| Application | system | Judgment |
|---|
| Pressure-relief cushion | Gel | Recommend |
| Bumper strip | Gel | Recommend |
| Seal | depending on working conditions | Evaluation |
Cologne Customer Case: Coating Delamination, Parameter Adjustment Reproduces the Feel
A modified material application factory in Ma'anshan experienced batch delamination of gel TPE overmolded parts, with a high rework rate, and the production line was close to stopping. After Koeln's inspection, the problem was found to be that the mold temperature, material temperature, and holding pressure parameters did not match the characteristics of the ultra-soft material—after adjusting the injection molding parameters, the delamination disappeared, and the tactile rebound matched the reference samples.
The coating of ultra-soft material relies 30% on the material and 70% on the parameters—if the mold temperature is too low, it won't stick well; if too high, flow marks appear; if the holding pressure is too high, it deforms. Adjusting ultra-soft material is meticulous work that requires patience, and the parameters need to be adjusted bit by bit.
The demand for gel TPE is spreading from adult products to consumer electronics and healthcare—soft structures in smart wearables and tactile layers in rehabilitation aids are all using ultra-soft materials. The volume in this field is increasing, but the barrier to entry is also rising: only suppliers who can handle molds and control the material output have long-term business. When procuring, pay more attention to the supplier's mold matching capabilities, not just the material price.
Summary
Remember this saying: Ultra-soft systems are not万能, but when used in the right scenario, they are irreplaceable. Save it for future reference.
Gel TPE is a 'super soft' expert: the extreme softness of Shore 00 and the comfort of a shock-absorbing lining. But softness is both its selling point and its temper—if the mold, process, and formulation are taken care of, it becomes the king of feel; if not, it becomes the king of defect rates.
A couple of days ago, I received a call from a client asking: can you send some samples first?
Yes. But before sending the sample, we will first ask clearly: what kind of part, what hardness, what substrate it will be applied to, and what working conditions.
It's not that there are too many steps, it's that I'm afraid of sending the wrong one and delaying your judgment.
