鞋垫发泡发得虚，一压就扁，回弹全没。发泡鞋垫密度没控好，成本省了手感塌了。
鞋垫发泡发得虚，一压就扁
发泡鞋垫是“轻弹的件”：回弹、密度、吸汗。材料要回弹好、密度轻、吸汗——结论先给：发泡鞋垫用发泡 TPE 是主流；密度是账本，轻 10% 省一截。
发泡鞋垫最大的坑：密度轻10%，成本省一截。密度是成本的关键——密度，是发泡鞋垫的账本。
发泡鞋垫是功能件：塌陷、发硬都是问题。材料选对，鞋垫才稳——功能件，别省料钱。
发泡鞋垫为什么用 TPE
发泡鞋垫用 TPE 的理由：回弹可做、密度可调、吸汗可做、效率高——四条合起来，适合发泡鞋垫。
回弹是核心：天天垫脚。回弹测试写进验收——塌陷，就是问题。
密度不能省：发泡鞋垫一斤料出多少双，全看密度控得稳不稳。密度数据写进验收——密度，是发泡鞋垫的账本。
垫脚密度吸汗，三道关
垫脚工况：天天垫脚。回弹数据要验——塌陷，就是问题。
密度工况：重量敏感。密度数据要验——超重，就是问题。
吸汗工况：出汗浸湿。耐水数据要验——发硬，就是问题。
TPE 发泡还是 EVA？一表看清
| 维度 | TPE 发泡 | EVA |
|---|
| 回弹 | 好 | 中 |
| 密度 | 可调 | 轻 |
| 吸汗 | 可做 | 差 |
| 成本 | 中高 | 低 |
| 耐用 | 好 | 中 |
| 用途 | 品质款 | 低价款 |
表格读法：EVA 便宜但回弹差；TPE 发泡回弹好——品质鞋垫 TPE 发泡，低价 EVA。
按定位选：品质 TPE 发泡，低价 EVA。
发泡鞋垫验收：密度回弹两笔账
| 项目 | 方法 | 标准 |
|---|
| 回弹 | 回弹测试 | 按标准 |
| 密度 | 密度杯 | 按目标 |
| 吸汗 | 浸水测试 | 按时间 |
| 成本 | 核算 | 对比 |
表格读法：密度、回弹、成本四项走完，成本账才清楚。
密度，是发泡鞋垫的账本。
只看单价，三个坑省了手感塌
坑一：只看单价。密度飘了，一双鞋用多少料就说不准——密度必看。
坑二：回弹漏测。塌陷——回弹测试，必测。
坑三：吸汗漏测。发硬——浸水测试，必测。
选发泡鞋垫先算密度这笔账
三问：密度多少、回弹率多少、发泡倍率多少。一验：实际穿着实测——三问一验，供应商底细清楚。
密度验证要先行：先核密度和回弹的平衡，再谈价格——密度，是发泡鞋垫的账本。
留样要成习惯：每批留样，回弹密度按批次复测。批次换料先对比再放量——批次稳，客诉少。
发泡鞋垫密度轻 10%，单件原料成本就省一截。 但密度不能无限降，0.25 以下回弹就塌——找密度和回弹的平衡点。
EVA 便宜但回弹差，TPE 发泡回弹好但成本中高。 走量低价 EVA，品质鞋垫 TPE 发泡——按定位选，别只看单价。
鞋垫用久回弹下降，不是料不行，是耐疲劳数据没测。 几千次压缩后回弹还剩多少，衰减速度决定寿命。
发泡鞋垫验收：回弹率、密度杯、浸水 24h、表面耐磨。 厚度按目标运动场景定，吸汗发硬问题一次堵死。
密度锁 0.30 加回弹衰减过检，鞋垫踩一年不塌不发硬。 每批留样测密度加回弹，颜色漂移按色差 ΔE 1.5 核。
发泡鞋垫常见问题与对策表
| 现象 | 原因 | 对策 |
|---|
| 塌陷 | 回弹不足 | 换高回弹料 |
| 发硬 | 吸汗不足 | 换耐水料 |
| 磨花 | 耐磨不足 | 换耐磨料 |
| 密度波动 | 发泡不稳 | 锁倍率 |
| 色差 | 色粉漂移 | 追色粉 |
发泡鞋垫压缩回弹按 40% 形变 10 万次后回弹保持率 80% 验收。 鞋垫踩一年回弹衰减多少，衰减速度决定寿命——新鞋垫 Q 不算，踩十万次还 Q 才算。
发泡鞋垫透气按水蒸气透过量 >300 g/m²·24h 验收。 汗脚鞋垫不透气就是闷臭，TPE 发泡比 EVA 透气好一档——吸水率和透气量一起测。
发泡鞋垫减震按冲击加速度衰减率 40% 以上验收。 鞋垫缓冲不是越软越好，
是把落地冲击减到舒适范围——冲击衰减率比硬度更说明减震效果。
发泡鞋垫慢回弹按压缩 30 秒后回弹 80% 验收。 慢回弹鞋垫踩下去慢慢弹回来，快了没有减压效果——回弹速度和回弹率是两个指标，都要测。
发泡鞋垫颜色按厚度档位追色，色差 ΔE ≤1.5。 同一款鞋垫不同厚度颜色要一致——厚度变了密度变了颜色容易飘，仪器对色别靠眼。
科隆客户案例：耐油不足溶胀变形，调参数过1000h老化
宁波一家鞋材厂，发泡鞋垫耐油性不足，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
发泡鞋垫的选型，密度先对，回弹再测，密度轻10%成本省一截，密度是账本。
我们交付的，不只是一包料。
还有一句用料的判断、一份对得上的物性表、一个出了问题还能找的人。
宁波市科隆新材料有限公司，做改性热塑性弹性体、改性尼龙（PA6 / PA66 / PA46 / PA11 / PA12 / PA6T / PA9T 及尼龙合金）、改性 PPO / PPS，以及各大化工巨头尼龙树脂、副牌料、大包料现货。
- 批次：第 12 批｜TS15
- 主关键词：发泡鞋垫；次关键词：发泡鞋垫TPE、鞋垫密度、鞋垫回弹、鞋垫成本
- 摘要：发泡鞋垫用什么TPE？密度轻10%，成本省一截。回弹、密度、成本三张表一次讲清。
- 更新时间：待定
Insoles have weak foam, flattening with just a press, and no rebound at all. Foam insole density isn't well controlled, saving costs but causing the tactile feel to collapse.
Insoles with weak foam and flattening under pressure
Foamed insoles are "lightweight and springy parts": rebound, density, and sweat absorption. The material must be well-rebounded, lightly dense, and sweat-absorbent—here's the conclusion: foamed TPE is the mainstream for foam insoles; Density is the ledger, 10% lighter saves a bit.
The biggest pitfall of foam insoles: 10% lighter density saves a bit. Density is the key to cost—density is the ledger of foam insoles.
Foam insoles are functional parts: sagging and hardening are problems. Choose the right materials for the insole—functional parts, don't skimp on material costs.
Why use TPE for foamed insoles ?
Reasons for using TPE for foamed insoles: rebound can be made, density adjustable, sweat absorption can be made, efficiency is high — all four together are suitable for foam insoles.
Rebound is the core: daily foot padding. Springback test is entered into acceptance—collapse is the problem.
Density can't be saved: how many pairs of foam insoles can be produced per jin depends entirely on how steady the density is controlled. Density data is included in the acceptance — density is the ledger of foam insoles.
Foot pads, density and sweat absorption, three checkpoints
Foot pad conditions: foot pads every day. Rebound data must be checked—collapse is the problem.
Density cycle: Weight sensitivity. Density data must be checked—Overweight is the problem.
Sweat absorption cycle: Sweat and soak. Water resistance data must be checked—stiffness is the problem.
TPE Foaming or EVA? Clear at the first watch
| dimension | TPE foam | EVA |
|---|
| rebound | good | medium |
| density | adjustable | light |
| sweat absorption | Usable | Poor |
| Cost | Mid-high | Low |
| Durable | Good | Medium |
| Purpose | Quality model | Low-priced model |
Table reading: EVA is cheap but has poor rebound; TPE foam with good rebound—quality insoles with TPE foam, low-priced EVA.
Choose by positioning: high-quality TPE foam, low-priced EVA
Foam insole acceptance: density rebound two accounts
| project | method | standard |
|---|
| rebound | rebound test | according to standard |
| density | density cup | target |
| Sweat absorption | Water immersion test | By time |
| Cost | Accounting | Comparison |
Table reading: Only when density, rebound, and cost are completed is the cost account clear.
Density is the ledger of foam insoles.
Just look at unit price, three pitfalls save you from tactile collapse
Pit One: Only look at unit price. Density is too high, you can't say how much material a pair of shoes uses—density is a must-see.
Pit 2: Missed rebound test. Sag—rebound test, mandatory.
Pit 3: Sweat absorption missed test. Stiffness—water immersion test, mandatory.
When choosing foam insoles, calculate density first
Third question: What is density, rebound rate, foam multiplier. First test: Actual wear test—three questions and one check, supplier background is clear.
Density verification comes first: first balance density and rebound, then discuss price—density is the ledger of foamed insoles.
Make sampling a habit: keep samples for each batch, retest rebound density by batch. Compare batches and materials before scaling up—stable batches, fewer customer complaints.
Foamed insoles have 10% lighter density, saving a bit on raw material costs per piece. But density can't be reduced indefinitely; below 0.25, rebound collapses—find the balance between density and rebound.
EVA Cheap but poor rebound, TPE foam has good rebound but costs are medium-high. Low-priced EVA for volume, high-quality TPE foam insoles—choose by positioning, don't just look at unit price.
Insole rebound decreases after prolonged use—not because the material is poor, but because fatigue resistance data hasn't been tested. After thousands of compressions, how much rebound remains? The rate of decay determines its lifespan.
Foamed insole acceptance: rebound rate, density cup, 24h immersion, surface wear resistance. Thickness is set according to the target sports scenario, and sweat absorption and hardness are solved in one go.
Density lock 0.30 plus rebound attenuation passes inspection; insoles don't collapse or harden after one year of use. Each batch of samples tests density plus rebound; color drift is calculated by ΔE 1.5 kernels.
Common Issues and Countermeasures for Foamed Insoles '
| Phenomenon | Causes | Countermeasures |
|---|
| Collapse | Insufficient Rebound | Change to High Rebound Material |
| Stiffen | Insufficient Sweat Absorption | Change to Water-Resistant Material |
| Abrasion Pattern | Insufficient Abrasion Resistance | Change to Abrasion-Resistant Material |
| Density Fluctuation | Unstable foam | Locking magnification |
| Color difference | Pigment drift | Chasing pigment powder |
Foam insoles are compressed and rebounded at 40%, after 100,000 deformations, rebound retention rate is 80%. Acceptance. How much insole rebound decays after one year depends on the rate of degradation determines its lifespan—new insoles don't have Q count, only after 100,000 steps do they still get Q.
Foamed insoles are breathable, tested by water vapor transmission >300 g/m²·24h. Sweaty insoles are stuffy and smelly; TPE foam is a step better than EVA breathability—water absorption and breathability are tested together.
Foamed insoles are inspected for shock absorption with impact acceleration attenuation rate above 40%. Softer insole cushioning isn't always better;
reduces impact impact to the comfort range—impact attenuation rate is more accurate than hardness.
Foamed insoles rebound slowly, compressed for 30 seconds, then rebounded to 80% for acceptance. Slow rebound insoles bounce back slowly when stepped on; if fast, there is no pressure relief—rebound speed and rebound rate are two indicators and must be tested.
Foam insole color is tracked by thickness level, color difference ΔE ≤1.5. Different thicknesses of the same insole must have consistent color—if thickness changes and density changes, color tends to float; don't rely on the eye to judge the color with the instrument.
Cologne Customer Case: Insufficient oil resistance causes swelling and deformation; parameters adjusted for aging after 1000 hours
A shoe material factory in Ningbo, foamed insoles have insufficient oil resistance and swell and deformation after oil soaking. Cologne cooperated with adjusting injection molding parameters (mold temperature/material temperature/holding pressure), eliminating swelling, and passed the 1000h aging test in one go. Parameter window locked, swelling cut off at the source—oil resistance issues, first look at the formula, then the parameters.
Summary
Selection of foam insoles: density first, rebound before testing; 10% lighter density saves costs; density is the ledger.
What we deliver is not just a package of materials.
There is also a judgment about materials, a matching physical property chart, and a person you can still find when problems arise
Ningbo Kolon New Materials Co., Ltd., specializes in modified thermoplastic elastomers, modified nylon (PA6 / PA66 / PA46 / PA11 / PA12 / PA6T / PA9T and nylon alloys), modified PPO / PPS, as well as nylon resins, secondary materials, and bulk materials from major chemical giants, available in stock.
- Batch: Batch 12｜TS15
- Main keywords: Foam insoles; Secondary keywords: Foam insole TPE, insole density, insole rebound, insole cost
- Summary: Which TPE to use for foam insoles? 10% lighter density, cost reduction. Rebound, density, and cost explained in three tables at once.
- Update time: To be determined
