天天揣兜，外壳磨花又发粘。电子烟外壳耐温不够，标再低也留不住人。
结论先摆：电子烟外壳，耐温耐磨绑一起
电子烟外壳是“天天揣兜的件”：发热、摩擦、汗液。材料要耐温、耐磨、耐汗——结论先给：电子烟外壳用耐温 SEBS 基 TPE 是主流；发热段，TPU 或 PC 复合优先。
电子烟外壳最大的坑：标价低三成，暗亏在后面。便宜料耐温不够，变形发粘，售后比料价贵——总账算清，贵料不贵。
电子烟外壳是功能件：发粘、开裂都是问题。材料选对，外壳才耐用——功能件，别省料钱。
TPE凭啥扛发热：耐温可加，耐磨可做
电子烟外壳用 TPE 的理由：耐温可做、耐磨可做、手感好、效率高——四条合起来，适合电子烟外壳。
耐温是核心：烟杆发热。耐温数据按实际温度验——软化变形，就是问题。
耐磨不能省：兜里天天磨。耐磨（磨耗）数据按实际使用验——磨花，都是问题。
揣一天烤它：发热、兜里摩擦、手汗
发热工况：烟杆发热。耐温数据要验——变形，就是问题。
摩擦工况：兜里磨。耐磨数据要验——磨花，都是投诉。
汗液工况：手汗。耐汗数据要验——发粘，都是体验。
TPE还是PC：外壳上看粘不粘
| 维度 | TPE | PC |
|---|
| 耐温 | 可做 | 高 |
| 手感 | 软 | 硬 |
| 耐磨 | 中 | 好 |
| 成本 | 低 | 中高 |
| 着色 | 可定制 | 可定制 |
| 批次 | 稳 | 稳 |
表格读法：PC 耐温高但硬；TPE 手感软、便宜——包胶件 TPE，结构件 PC。
按部位选：握持段 TPE，结构段 PC——部位不同，材料不同。
两个坑：标价低三成、耐温造假
坑一：标价低三成。便宜料耐温不够，机身一发热就变形发粘——售后单，比省的料价厚。
坑二：耐温虚标。峰值能扛，长期软化——耐温按长期温度问。
坑三：析出忽略。高温析出，外壳发粘——析出测试，必测。
验收三问：耐温、耐磨、气味
三问：耐温按长期多少度、耐磨按什么方法、总账怎么算。一验：实际使用实测——三问一验，供应商底细清楚。
总账要算清：标价低三成，暗亏在后面。按售后算总账——总账算清，选料不亏。
留样要成习惯：每批留样，耐温耐磨按批次复测。批次换料先对比再放量——批次稳，客诉少。
电子烟是发热件，外壳阻燃是安全底线，不是配置。 发热状态下加热后握持不打滑，热态手感要单独测。
低价料省掉阻燃剂，单价是下来了，耐温阻燃全垮。 发热器件缺阻燃，外壳变形发粘就是安全事故。
标价低三成，售后暗亏够把料钱吐回去。 复购率高的品类，磨花快、手感差，用户换下家一次就回来了。
环保认证逐项核，别只看阻燃。 RoHS、REACH 一项项过，阻燃剂、助剂任何一个超标，整批卡检测。
外壳发热时变软，常温握着舒服、一加热就打滑。 按实际使用温度加热后再握，数据诚实才敢量产。
电子烟外壳验收要点表
| 项目 | 测试方法 | 合格线 |
|---|
| 长期耐温 | 按使用温度 | 无变形 |
| 阻燃 | 按等级 | 达标 |
| 合规 | 认证清单 | 逐项核 |
| 热态手感 | 加热握持 | 不打滑 |
| 批次 | 三批抽检 | 数据一致 |
电子烟外壳常见问题与对策表
| 现象 | 原因 | 对策 |
|---|
| 发粘 | 耐温不足 | 换耐温料 |
| 变形 | 阻燃剂缺失 | 补足阻燃 |
| 磨花 | 耐磨不足 | 表面处理 |
| 卡关 | 认证不全 | 补齐清单 |
| 手感变软 | 发热软化 | 换热态稳定料 |
电子烟外壳天天贴手握，发粘析出一次就显廉价。 样块 60℃ 烤一晚看粘不粘，低析出配方配低迁移色母。
外壳包胶剥离力按手汗长期浸验，脱层露白就退货。 同 Shore A 70，SEBS 软糯 TPU 弹韧，手感差一截价格也差。
报价低三成往往暗亏在批次，硬度漂移大三成正好赔客诉。 副牌号留样核对，熔指硬度随货，数据不全别下单。
磨砂干爽不粘指纹是方向，太油越用越黏。 手汗浸渍不滑，握感稳定才是复购的根。
外壳小料别只看单价，报废率账要算清。 批次硬度漂移高，省下的料钱返工加倍还。
科隆客户案例：回弹不足功能不达标，调参数过气味验收
北京一家电子消费厂，电子烟外壳回弹不足，功能件性能不达标。科隆配合调整注塑参数（模温/料温/保压），气味等级通过客户验收标准。参数窗口对了，回弹和气味一起过——两个问题，一次解决。
小结
电子烟外壳的选型，耐温先测，总账再算，标价低三成的话，售后会加倍要回去。
Carrying it in your pocket every day, the casing gets scratched and sticky. The e-cigarette casing isn't heat-resistant enough; no matter how low the specifications are, it won't retain users.
Conclusion first: e-cigarette casing, temperature-resistant and wear-resistant, tied together
The e-cigarette casing is an 'item you carry in your pocket every day': it experiences heat, friction, and sweat. The material needs to be heat-resistant, wear-resistant, and sweat-resistant—here's the conclusion first: for e-cigarette casings, temperature-resistant SEBS-based TPE is mainstream; for the heated section, TPU or PC composites are preferred.
The biggest pitfall of e-cigarette casings: the price is marked 30% lower, with hidden losses lurking behind. Cheap materials can't withstand high temperatures, deform and become sticky, and after-sales service costs more than the material itself—when you tally it all up, quality materials aren't expensive.
The e-cigarette shell is a functional part: stickiness or cracking are both problems. Choosing the right material makes the shell durable—functional parts, don't skimp on material costs.
Why TPE can withstand heat: temperature resistance can be increased, wear resistance can be improved
Reasons for using TPE for e-cigarette shells: can withstand high temperatures, wear-resistant, good hand feel, and high efficiency — together, these four make it suitable for e-cigarette shells.
Temperature resistance is key: the cigarette holder heats up. Temperature resistance should be tested according to the actual temperature — softening and deformation indicate a problem.
Wear resistance cannot be compromised: it's rubbed every day in your pocket. Wear resistance (abrasion) data should be tested based on actual use — scratches are all problems.
Hold it for a day: heating, rubbing in the pocket, sweaty hands
Heating condition: The chimney pipe is heating up. Temperature resistance data needs to be checked—deformation is a problem.
Friction conditions: abrasion inside the pocket. Wear resistance data needs to be tested—scratches all lead to complaints.
Sweat condition: hand sweat. Sweat resistance data needs to be tested—sticky, all based on experience.
TPE or PC: check if the case feels sticky
| Dimension | TPE | PC |
|---|
| Temperature resistant | Can be done | Tall |
| hand feel | soft | hard |
| Wear-resistant | middle | Good |
| Cost | Low | Medium-high |
| Coloring | Customizable | Customizable |
| Batch | Stable | Stable |
Table reading: PC is heat-resistant but hard; TPE feels soft and is cheap — overmolded parts use TPE, structural parts use PC.
Select by part: handle section TPE, structural section PC—different parts, different materials.
Two pitfalls: prices marked 30% lower, temperature resistance falsified
Pitfall 1: The listed price is 30% lower. The cheap material cannot withstand heat, and the body deforms and becomes sticky once it warms up—the after-sales service alone costs more than the money saved on cheaper materials.
Pitfall 2: Overstated temperature resistance. Can withstand peak temperatures, but softens over time — temperature resistance should be measured based on long-term exposure.
Pitfall Three: Overlooking precipitation. High-temperature precipitation, sticky casing—precipitation testing, must be conducted.
Three acceptance questions: temperature resistance, wear resistance, odor
Three questions: What is the long-term temperature resistance, which method is used for wear resistance, and how is the general ledger calculated? One test: actual measurement during use—three questions and one test make the supplier's details clear.
The general ledger must be accounted for clearly: if the marked price is 30% lower, the hidden loss comes later. Calculate the general ledger according to after-sales—once the general ledger is clear, choosing materials will not incur a loss.
Making sample retention a habit: retain samples from each batch, and re-test temperature and wear resistance by batch. When changing materials between batches, compare first before scaling up — stable batches lead to fewer customer complaints.
E-cigarettes are heating elements, and having a flame-retardant casing is the basic safety requirement, not an optional feature. After heating, the device should not slip when held, and the feel when hot needs to be tested separately.
Using low-cost materials to skip flame retardants may lower the unit price, but heat resistance and flame retardancy are completely compromised. When heating components lack flame retardants, the casing can deform and become sticky, leading to safety accidents.
Priced 30% lower, the after-sales hidden losses are enough to recover the material costs. For categories with high repurchase rates, items wear out quickly and feel bad; once users switch to another brand, they come back after just one try.
Environmental certifications are checked item by item, don’t just look at flame retardancy. RoHS and REACH are checked item by item; if any flame retardant or additive exceeds the limit, the entire batch will be blocked from testing.
The shell becomes soft when it heats up. It's comfortable to hold at room temperature, but it becomes slippery as soon as it heats. Only after heating it to the actual usage temperature before holding it, can the data be honest enough to dare mass production.
E-cigarette Shell Acceptance Checklist
| Project | Test method | Passing line |
|---|
| Long-term temperature resistance | According to the operating temperature | No deformation |
| Flame retardant | By level | Meet the standard |
| Compliance | Certification List | Item-by-item verification |
| Warm touch | Heated grip | Non-slip |
| Batch | Three rounds of random inspections | Data consistency |
Common Problems and Countermeasures of E-cigarette Shells
| Phenomenon | Reason | Countermeasure |
|---|
| sticky | Insufficient temperature resistance | Change to heat-resistant material |
| Transformation | Flame retardant missing | Make up for flame retardancy |
| frosted | Insufficient wear resistance | Surface treatment |
| Stuck at a level | Incomplete verification | Complete the checklist |
| Texture becomes softer | Heated and softened | Heat exchange steady material |
The e-cigarette shell is handled every day, and once it becomes sticky from exudation, it immediately looks cheap. Bake the sample block at 60°C overnight to see if it is sticky, and use a low-exudation formula with low-migration color masterbatch.
The peel strength of the coated shell is tested by long-term immersion in sweat. If delamination and white exposure occur, return it. Same Shore A 70, SEBS soft-mushy TPU is elastic and tough, but the feel is inferior and the price is also different.
A quote that is 30% lower often hides losses in the batch, and a hardness drift of 30% can just compensate for customer complaints. Keep samples of the sub-brand for verification, the melt index and hardness follow the shipment, do not place orders if the data is incomplete.
Matte, dry, and fingerprint-resistant is the direction; too oily and it gets stickier the more you use it. Hand sweat soaking doesn't make it slippery; a stable grip is the key to repeat purchases.
Don't just look at the unit price for small amounts of casing material; make sure to account for the scrap rate. If batch hardness varies greatly, the money saved on materials will be doubled in rework costs.
Cologne Customer Case: Insufficient rebound, function not meeting standards, parameter adjustment causes excessive smell during acceptance
A consumer electronics factory in Beijing found that the e-cigarette shells had insufficient rebound and the functional components did not meet performance standards. Cologne coordinated adjustments to the injection molding parameters (mold temperature/material temperature/holding pressure), bringing the odor level up to the customer acceptance standard. With the parameter window correct, both rebound and odor passed together—two problems solved in one go.
Summary
When selecting the casing for e-cigarettes, test the temperature resistance first, calculate the total cost later. If the listed price is 30% lower, after-sales service will double the charge to recover it.
