握把用仨月就脱层，康复器成了摆设。康复握把脱层别怪胶，受力设计没配对。
结论先摆：康复握把，防滑良率绑一起
康复辅具握把是“天天握的件”：防滑、耐消毒、握持舒适。材料要防滑好、耐消毒、手感稳——结论先给：康复辅具握把用 SEBS 基 TPE 是主流；高频消毒，TPU 优先。
康复辅具握把最大的坑：料价压几毛，返工一架赔几块。批量件良率才是真成本——按良率算账，账才算得清。
康复辅具握把是功能件：打滑、脱层都是问题。材料选对，辅具才稳——功能件，别省料钱。
TPE凭啥握得稳：防滑可做，耐消毒可加
康复辅具握把用 TPE 的理由：防滑可做、耐消毒可做、手感可调、效率高——四条合起来，适合握把。
防滑是核心：康复握持防滑。防滑测试写进验收——打滑，就是问题。
耐消毒不能省：天天消毒。耐消毒测试（按方式）写进验收——脱层，就是问题。
握一天消它：握持、消毒、辅助
握持工况：康复训练。防滑数据要验——打滑，就是问题。
消毒工况：天天消毒液。耐消毒数据要验——脱层，就是问题。
辅助工况：支撑受力。承重数据要验——变形，就是问题。
SEBS还是TPU：握把上看脱不脱层
| 维度 | SEBS 基 | TPU |
|---|
| 防滑 | 可做 | 好 |
| 耐消毒 | 可做 | 好 |
| 手感 | 软糯 | 略硬 |
| 成本 | 中 | 中高 |
| 承重 | 中 | 强 |
| 批次 | 稳 | 稳 |
表格读法：TPU 承重耐磨好但贵；SEBS 基手感软糯——常规握把 SEBS 基，高承重 TPU。
按承重选：高承重 TPU，常规 SEBS 基。
良率成本核算表：账按良率算
| 项目 | 单价 | 良率 | 总账 |
|---|
| 料 A | 低 | 92% | 返工多 |
| 料 B | 中 | 99% | 总账低 |
| 结论 | 按良率 | 核算 | 选总账 |
表格读法：把料价差和返工损失放一行比，单价低的总账未必低。
总账，才是真账。
两个坑：按单价算、防滑造假
坑一：按单价算。只看每吨便宜几百，忽略包胶脱胶返工——按总账算。
坑二：防滑虚标。报告写防滑，实际打滑——防滑按实测验收。
坑三：耐消毒漏测。消毒脱层——耐消毒测试，必测。
验收三问：疲劳、防滑、批次
三问：防滑按什么标准、耐消毒按什么方式、良率数据有没有。一验：实际握持实测——三问一验，供应商底细清楚。
良率验证要先行：先试一批看包胶良率，再谈价格——总账，才是真账。
留样要成习惯：每批留样，防滑耐消毒按批次复测。批次换料先对比再放量——批次稳，客诉少。
康复握把 Shore A 60-70，防滑纹路单独设计——光面湿手必滑。包胶厚度 2-3mm，太薄握感硬缓冲差，太厚装配难。握把选型，硬度和包胶厚度一起定。
握把用几个月打滑脱层——包胶剥离力不够，防滑纹路磨平了。天天受力的握把，耐磨和剥离力都要升级。打滑不是手汗多，是纹路磨平了。
握把脱层先别怪胶水——受力方式不同，助行器承重、弹力带承拉，材料要求不同。先把受力方式和承重数据给供应商。
脱层的根在受力设计，不在涂胶。
老年人握力小要偏软防滑，康复训练者握力渐强要耐磨耐久——人群不同材料不同。同是握把，硬度档位差两档。
按适配人群选硬度，不是一个硬度打天下。
把良率数据和客诉记录一起看——良率稳的料，比便宜料划算。握把打滑脱层的客诉成本，比料价差大得多。账按良率算，不按单价算。
康复辅具握把常见问题与对策表
| 现象 | 原因 | 对策 |
|---|
| 打滑 | 防滑不足 | 改纹路 |
| 脱层 | 粘合不足 | 调参数 |
| 变形 | 承重不足 | 换高强度料 |
| 磨花 | 耐磨不足 | 换耐磨料 |
| 良率低 | 批次漂移 | 锁配方窗口 |
**康复握把 Shore A 55-65 按患者手力调，抓握力弱的患者降一档。
** 偏瘫患者握把要加防滑纹路，汗手不滑才是安全——硬度按患者群体分档，别按成人平均手力定。
**康复握把疲劳按反复抓握 1 万次后回弹保持 80% 验收。
** 患者天天握，回弹衰减太快手感就变硬——疲劳数据按患者使用频率测，别按实验室标准报。
科隆客户案例：耐油不足溶胀变形，调参数过1000h老化
扬州一家医疗器械厂，康复辅具握把耐油性不足，泡油后溶胀变形。科隆配合调整注塑参数（模温/料温/保压），溶胀消除，一次性通过 1000h 老化测试。参数窗口锁死，溶胀从源头断——耐油问题，先看配方再看参数。
小结
康复辅具握把的选型，防滑先测，良率再算，账按良率算，不按料价算，总账才是真账。
The grip peeled after just three months of use, and the rehabilitation device became just a decoration. Don't blame the glue for the grip peeling; the force design wasn't properly matched.
Conclusion first: combine the rehabilitation handle with anti-slip yield
Rehabilitation aid handles are the 'things you grip every day': non-slip, disinfectant-resistant, and comfortable to hold. The material needs to be non-slip, disinfectant-resistant, and have a stable hand feel — conclusion first: SEBS-based TPE is mainstream for rehabilitation aid handles; for high-frequency disinfection, TPU is preferred.
The biggest pitfall with rehabilitation aid handles: the material price is squeezed by a few cents, but reworking one unit costs a few dollars. The real cost is the yield of mass production parts—only by calculating based on yield can the accounts be clear.
Rehabilitation aid handles are functional parts: slipping and delamination are problems. Only by choosing the right material will the aid be stable—functional parts, don't skimp on material costs.
Why TPE can be held firmly: anti-slip can be done, disinfectant resistance can be added
Reasons for using TPE for rehabilitation aid handles: can be made non-slip, can be made resistant to disinfection, tactile feel can be adjusted, high efficiency—combining these four, it is suitable for handles.
Slip resistance is key: rehabilitation grips should be non-slip. Slip resistance testing should be included in acceptance—if it slips, it's a problem.
Disinfection resistance cannot be compromised: disinfect every day. Disinfection resistance testing (according to the method) should be recorded in the acceptance — delamination is a problem.
Hold for a day to eliminate it: grip, disinfect, assist
Grip condition: Rehabilitation training. Anti-slip data needs to be tested — slipping is a problem.
Disinfection conditions: Daily disinfectant. Resistance to disinfectants needs to be tested—delamination is a problem.
Auxiliary working condition: support stress. Load-bearing data must be verified—deformation equals problems.
SEBS or TPU: Check if the grip layer peels off
| Dimension | SEBS base | TPU |
|---|
| Non-slip | Can do | Good |
| Disinfection-resistant | Can be done | Good |
| hand feel | soft and glutinous | Slightly hard |
| Cost | middle | Medium-high |
| Load-bearing | middle | Strong |
| Batch | Stable | Stable |
Table interpretation: TPU is strong and wear-resistant but expensive; SEBS feels soft and sticky — conventional grips use SEBS as the base, high-load parts use TPU.
Choose by load-bearing: high-load TPU, regular SEBS base.
Yield Cost Accounting Table: Accounts Calculated According to Yield
| Project | Unit price | Yield | General Ledger |
|---|
| Material A | Low | 92% | More rework |
| Material B | middle | 99% | General ledger low |
| Conclusion | By yield | Accounting | Select General Ledger |
Table reading: Compare the material price difference and rework loss in one row; the total ledger with the lower unit price is not necessarily lower.
The general ledger is the real account.
Two pitfalls: calculating by unit price, faking anti-slip
Pitfall 1: Calculating by unit price. Only looking at the few hundred yuan cheaper per ton, ignoring the rework caused by coating peeling—calculate based on the total account.
Pitfall 2: Misleading slip resistance. The report says slip-resistant, but in reality it is slippery — slip resistance should be accepted based on actual tests.
Pitfall three: resistance to disinfection goes undetected. Disinfection delamination—disinfection resistance testing is essential.
Three Acceptance Questions: Fatigue, Slip Resistance, Batches
Three questions: What standard is used for anti-slip, what method is used for disinfection resistance, and are there yield data? One test: Actual grip measurement—three questions and one test, the supplier's background is clear.
Yield verification must come first: try a batch to see the yield of coated parts before talking about the price—general ledger is the real account.
Making sample retention a habit: retain samples for each batch, and retest slip resistance and disinfection durability by batch. When changing materials between batches, compare first before scaling up—stable batches result in fewer customer complaints.
Rehabilitation handle Shore A 60-70, anti-slip pattern designed separately — smooth surface is slippery when wet. Rubber coating thickness 2-3mm; too thin feels hard and cushions poorly, too thick is difficult to assemble. Handle selection is determined by both hardness and rubber coating thickness.
The handle becomes slippery and peels after a few months of use — the adhesive strength of the coating is insufficient, and the anti-slip pattern has worn down. The handle, which bears force every day, needs improved wear resistance and adhesive strength. Slipping isn't due to sweaty hands; it's because the pattern has worn down.
Don't blame the glue first if the grip delaminates—the way force is applied is different. Walkers bear weight, resistance bands are pulled, and the material requirements are different. First, give the force application method and load data to the supplier.
Delaminated roots are designed to bear force, not to be glued.
Elderly people with weak grip strength need handles that are soft and non-slip, while those in rehabilitation training whose grip is gradually getting stronger need handles that are wear-resistant and durable—different materials for different groups. For the same handle, the hardness level differs by two grades.
Choose stiffness according to the target audience, not one stiffness for everything.
Look at yield data together with customer complaint records—materials with stable yield are more cost-effective than cheaper materials. The cost of complaints for grip slipping or delamination is much higher than the price difference of the materials. Accounting is done based on yield, not unit price.
Table of Common Problems and Countermeasures for Rehabilitation Aid Handles
| Phenomenon | Reason | Countermeasure |
|---|
| slippery | Insufficient slip resistance | Change the pattern |
| Delamination | Insufficient adhesion | Adjust parameters |
| Transformation | Insufficient load-bearing | Switch to high-strength material |
| frosted | Insufficient wear resistance | Replace wear-resistant material |
| Low yield | Batch Drift | Lock Recipe Window |
**Rehabilitation handle Shore A 55-65, adjust according to the patient's hand strength, lower one level for patients with weak grip.
** The handles for hemiplegic patients should have anti-slip patterns; it's safe only if sweaty hands don't slip—hardness should be classified according to the patient group, not based on the average hand strength of adults.
**After repeated gripping of the rehabilitation handle 10,000 times, the rebound should maintain 80% for acceptance.
** If the patient squeezes every day and the rebound decays too quickly, the feel becomes stiff — fatigue data should be measured according to the patient's usage frequency, not reported according to laboratory standards.
Cologne Customer Case: Insufficient oil resistance causing swelling and deformation, parameter adjustment followed by over 1000 hours of aging
A medical device factory in Yangzhou found that the handles of rehabilitation aids lacked oil resistance and would swell and deform after being soaked in oil. Kolon cooperated to adjust the injection molding parameters (mold temperature/material temperature/holding pressure), eliminating the swelling and passing the 1000-hour aging test on the first try. The parameter window was locked, stopping the swelling from the source — for oil resistance issues, first look at the formulation, then at the parameters.
Summary
When selecting handles for rehabilitation aids, test for slip resistance first, then calculate yield rate. Account according to yield rate, not material cost; the total account reflects the true account.
