贴几周就发红发痒，颜色还老跑偏。矫形器衬垫耐汗没配对，皮肤先抗议。
结论先摆：矫形器衬垫，贴肤色粉绑一起
矫形器衬垫是“天天贴皮肤”的件：贴肤、耐汗、颜色稳。材料要贴肤好、耐汗、颜色稳——结论先给：矫形器衬垫用 SEBS 基 TPE 是主流；高致敏，凝胶 TPE 或硅胶留。
矫形器衬垫最大的坑：颜色老跑偏，色粉批次要追。颜色漂移，多半是色粉批次问题——色粉，是衬垫的脸。
矫形器衬垫是体验件：变色、过敏都是问题。材料选对，佩戴才安心——体验件，别省料钱。
TPE凭啥贴皮肤：贴肤可做，颜色还稳
矫形器衬垫用 TPE 的理由：贴肤可做、耐汗可做、颜色可调、效率高——四条合起来，适合衬垫。
贴肤是核心：天天贴皮肤。致敏测试写进验收——过敏，就是问题。
色粉不能省：衬垫贴皮肤，色差一眼就被看出来。色粉批次写进验收——色粉，是衬垫的脸。
贴一天磨它：皮肤、汗、摩擦
贴肤工况：天天贴皮肤。致敏数据要验——过敏，就是问题。
汗液工况：出汗浸泡。耐汗数据要验——变色，就是问题。
摩擦工况：日常摩擦。耐磨数据要验——磨花，就是问题。
SEBS还是硅胶：衬垫上看红不红
| 维度 | SEBS 基 | 硅胶 |
|---|
| 贴肤 | 可做 | 好 |
| 耐汗 | 可做 | 好 |
| 颜色 | 可调 | 可调 |
| 成本 | 中 | 中高 |
| 效率 | 注塑 | 硫化 |
| 批次 | 需控色 | 稳 |
表格读法：硅胶贴肤耐汗好但贵；SEBS 基性价比高——常规衬垫 SEBS 基，高致敏硅胶。
按致敏要求选：高致敏硅胶，常规 SEBS 基。
色粉批次追踪表：色差追到批次
| 批次 | 色差 | 记录 | 结论 |
|---|
| 第 1 批 | 基准 | 留档 | 基准 |
| 第 2 批 | 复测 | 留档 | 对比 |
| 第 3 批 | 复测 | 留档 | 结论 |
表格读法：同批色粉留样，色差一漂就追到具体批号。
色粉，是衬垫的脸。
两个坑：色差怪配方、耐汗漏测
坑一：色差怪配方。颜色一批一个样，先查是不是换了色粉批次——先追色粉。
坑二：耐汗漏测。变色——耐汗测试，必测。
坑三：贴肤虚标。过敏——致敏测试，必测。
验收三问：耐汗、色差、医用级
三问：色粉批次怎么管、耐汗按什么标准、贴肤测试有没有。一验：实际佩戴实测——三问一验，供应商底细清楚。
色粉验证要先行：先锁色粉牌号和批次，再谈价格——色粉，是衬垫的脸。
留样要成习惯：每批留样，贴肤耐汗按批次复测。批次换料先对比再放量——批次稳，客诉少。
矫形器衬垫 Shore A 20-30 超软贴肤——贴合度影响佩戴稳定和舒适。使用周期定耐老化要求，长期佩戴耐老化升级。衬垫选型，贴合和清洁方式一起定。
衬垫用几周发红发痒——抗菌处理不到位，清洁剂把材料侵蚀了。按清洁方式推荐配方，酒精、水洗、消毒液各不同。
发红不是过敏，是材料和清洁剂不兼容。
颜色飘移先别怪色粉——色母载体、色粉浓度、分散性都影响稳定。按色母体系验收颜色，别只看表面色差。色差稳不稳，看色母不看表面。
做贴合测试，让供应商配合——贴合不好松动摩擦，皮肤易损。抗菌体系说明清楚，按体系验收。贴合和抗菌都验了，佩戴才安心。
衬垫是“贴在身上的软垫子”——要贴合、要抗菌、要耐清洁。超软 TPE 低析出，汗液泡着不发红。贴肤件的账，析出低比软更要紧。
矫形器软衬垫常见问题与对策表
| 现象 | 原因 | 对策 |
|---|
| 变色 | 汗液腐蚀 | 换耐汗料 |
| 过敏 | 致敏物质 | 换低敏料 |
| 色差 | 色粉批次 | 追色粉 |
| 磨花 | 耐磨不足 | 换耐磨料 |
| 发粘 | 助剂析出 | 换低析出料 |
矫形器衬垫按 Shore A 30-40 选，长期受压部位加透气孔。 衬垫和皮肤贴合 8 小时，低气味配方是硬指标——汗液浸泡后不发粘才敢天天戴。
科隆客户案例：回弹不足功能不达标，调参数过气味验收
郑州一家医疗器械厂，矫形器衬垫回弹不足，功能件性能不达标。科隆配合调整注塑参数（模温/料温/保压），回弹恢复，气味等级通过客户验收标准。参数窗口锁死，回弹从源头稳——回弹问题，先看参数再看配方。
小结
矫形器衬垫的选型，色粉先追，贴肤再测，颜色老跑偏色粉批次要追，别怪配方。
After wearing it for a few weeks, it becomes red and itchy, and the color keeps fading. The orthotic padding doesn't resist sweat and isn't matched, so the skin protests first.
Conclusion first: Orthotic pad, attach skin-colored powder together
Orthotic pads are items that 'stick to the skin every day': they must adhere to the skin, resist sweat, and maintain stable color. The material should adhere well to the skin, resist sweat, and maintain stable color — conclusion first: SEBS-based TPE is mainstream for orthotic pads; highly allergenic, gel TPE or silicone is reserved.
The biggest drawback of orthotic insoles: the color often goes off, and color powder batches need to be tracked. Color drift is mostly a problem with the color powder batch—the color powder is the face of the insole.
Orthopedic insoles are trial items: discoloration and allergies are issues. Choosing the right material ensures comfort—since they are trial items, don't skimp on materials.
Why TPE can stick to the skin: It can adhere to the skin, and the color remains stable.
Reasons for using TPE for orthotic liners: skin-friendly, sweat-resistant, color-adjustable, and efficient—together, these four make it suitable for liners.
Skin contact is key: apply to the skin every day. Include allergy testing in the acceptance—if allergic, it's a problem.
You can't skimp on pigments: the padding sticks to the skin, and any color difference is obvious at a glance. Record the pigment batch in the inspection record—pigments are the face of the padding.
Rub it for a day: skin, sweat, friction
Skin-contact condition: applied to the skin every day. Sensitization data must be verified—if it causes an allergy, it’s a problem.
Sweat conditions: soaking in sweat. Sweat resistance data must be tested—discoloration indicates a problem.
Friction condition: daily friction. Wear resistance data must be tested—scratches are a problem.
SEBS or silicone: check if the pad looks red
| Dimension | SEBS base | Silicone |
|---|
| close-fitting | Can do | Good |
| Sweat-resistant | Can do | Good |
| Color | Adjustable | Adjustable |
| Cost | middle | Medium-high |
| Efficiency | Injection molding | Vulcanization |
| Batch | Color control required | Stable |
Table reading: Silicone is skin-friendly, sweat-resistant, and good, but expensive; SEBS has a high cost-performance ratio — conventional pads use SEBS as the base, high-sensitization ones use silicone.
Select according to sensitization requirements: high-sensitization silicone, conventional SEBS base.
Pastel Batch Tracking Table: Color Difference Tracked to Batch
| Batch | Color difference | Record | Conclusion |
|---|
| Batch 1 | Benchmark | File for record | Benchmark |
| Batch 2 | Retest | File for record | Contrast |
| The 3rd batch | Retest | File for record | Conclusion |
Table reading method: Keep samples of the same batch of pigment, and once there is a color difference, trace it to the specific batch number.
Blush is the padding of the face.
Two pitfalls: odd color difference formula, sweat-resistant leakage test failure
Pitfall 1: Strange color difference formula. Each batch of color is different, first check if the pigment batch has been changed — trace the pigment first.
Pitfall 2: Sweat resistance testing. Color change — sweat resistance test, must test.
Pitfall three: Mislabeling as skin-friendly. Allergy—sensitization testing is a must.
Three inspection questions: sweat resistance, color difference, medical grade
Three questions: How to manage color powder batches, what standard to use for sweat resistance, and whether there is a skin-adhesion test. One check: actual wear and measurement—three questions and one check make the supplier's details clear.
Pigment verification must come first: lock in the pigment brand and batch before discussing the price—pigment is the face of the gasket.
Making sample retention a habit: retain samples for each batch, and re-test batch by batch for skin adhesion and sweat resistance. When changing materials between batches, compare first before scaling up—stable batches mean fewer customer complaints.
Orthotic pad Shore A 20-30 super soft skin-friendly—fit affects wearing stability and comfort. The usage cycle determines the aging resistance requirements; long-term wear requires upgraded aging resistance. Pad selection is determined together with fit and cleaning method.
The padding becomes red and itchy after a few weeks of use — the antibacterial treatment is inadequate, and the cleaning agents have corroded the material. Follow the recommended cleaning method for the formula; alcohol, washing, and disinfectant each have different effects.
The redness is not due to an allergy; it is because the material and the cleaner are incompatible.
Don't blame the pigment for color drift first—the carrier of the color masterbatch, the pigment concentration, and dispersion all affect stability. When accepting color according to the masterbatch system, don't just look at the surface color difference. To see if the color difference is stable, look at the masterbatch, not the surface.
Conduct adhesion tests and have suppliers cooperate—if adhesion is poor, it will loosen and rub, causing skin damage. Clearly explain the antibacterial system and accept it according to the system. Only after both adhesion and antibacterial tests are passed can wearing it be reassuring.
The padding is a 'soft cushion that sticks to the body' — it needs to fit well, be antibacterial, and easy to clean. Extra soft TPE with low leaching, it won't cause redness even when soaked in sweat. For skin-contact parts, low leaching is even more important than softness.
Common Problems and Solutions Table for Orthotic Soft Pads
| Phenomenon | Reason | Countermeasure |
|---|
| Change color | sweat corrosion | Change to sweat-resistant material |
| Allergy | Allergen | Switch to hypoallergenic material |
| Color difference | Chalk batch | Chasing Color Powder |
| frosted | Insufficient wear resistance | Replace wear-resistant material |
| sticky | Additive precipitation | Switch to low precipitation material |
Orthotic insoles are selected according to Shore A 30-40, with ventilation holes added in areas under long-term pressure. The insole should fit the skin for 8 hours, and a low-odor formula is a must-have standard—only if it doesn't become sticky after soaking in sweat can it be worn daily.
Cologne Customer Case: Insufficient rebound, function not meeting standards, adjusting parameters causes excessive smell during acceptance
A medical device factory in Zhengzhou had insufficient rebound in orthopedic pads, and the functional parts did not meet performance standards. Cologne assisted in adjusting injection molding parameters (mold temperature/material temperature/holding pressure), restoring the rebound, and the odor level met the customer's acceptance standards. The parameter window was locked, stabilizing rebound from the source—when there is a rebound problem, first check the parameters, then the formulation.
Summary
For the selection of orthotic pads, first match the pigment, then test it against the skin. If the color keeps shifting, track the pigment batch—don't blame the formula.
