同一根料两车间测，硬度差五度。标尺和方法没对，数据就是自己骗自己。
两车间差五度，不是料飘了是方法没对
TPE 硬度测试，方法和读数都对才准：标尺、厚度、时间。结论先给：测法不对，同一个件能读出两个硬——方法，是硬度的基础。
TPE硬度测试最大的坑：参数对得上，良率才稳。方法不对，读数白测——方法，是硬度的准星。
TPE 硬度是品质关：漂移、误读都是问题。测试对了，品质才稳——品质关，别省标准。
硬度分体系，为什么先认邵氏标尺
TPE 常用邵氏硬度：A 标尺软胶，D 标尺硬胶。标尺选错，读数无效——标尺，是硬度的基础。
硬度范围：SEBS 基 0-90A。TPV 40A-60D——范围，是硬度的地图。
硬度按件定：牙胶软，工具柄硬。硬度不对，手感差——硬度，是手感的数据。
厚度、时间、环境，读数差在哪
厚度：试片厚度至少 6mm。厚度不够，读数偏低——厚度，是读数的前提。
时间：压针接触 1 秒读数。时间过长，读数漂——时间，是读数的标准。
环境：23℃ 标准温度。温度高，硬度降——环境，是读数的条件。
邵氏标尺，一张表对照清楚
| 标尺 | 范围 | 用途 |
|---|
| 00 | 0-100 | 超软 |
| A | 0-100 | 软胶 |
| D | 0-100 | 硬胶 |
| 读数 | 对应 | 验收 |
表格读法：标尺按硬度选，读数按标尺读——超软 00，软胶 A，硬胶 D。
按硬度选标尺，读数才准。
读数准得重复，验收测这四项
| 项目 | 要求 | 判断 |
|---|
| 标尺 | 正确 | 达标 |
| 厚度 | ≥6mm | 达标 |
| 时间 | 1秒 | 达标 |
| 环境 | 23℃ | 达标 |
表格读法：标尺、厚度、压头时间逐项对，薄件叠测才准——测法统一，批次硬度才比得起来。
方法，是硬度的准星。
标尺乱选读数乱读，数据没法用
坑一：标尺乱选。软料用Shore A、薄件用00档，读错了差好几度——硬度先定标尺再谈数值。
坑二：厚度不够。读数偏低——厚度达标。
坑三：时间乱定。读数漂——1 秒读数。
标尺、厚度、压头——测前先问清
三问：什么标尺、件多厚、什么温度。一验：标准读数实测——三问一验，供应商底细清楚。
方法验证要先行：试片厚度、压头停留时间按标准走，±3A以内才放行。先对方法，再谈硬度——方法，是硬度的准星。
留样要成习惯：每批留样，硬度按批次复测。批次换料先对比再放量——批次稳，客诉少。
读数飘、测不准：对照一张表
| 现象 | 原因 | 对策 |
|---|
| 读数漂 | 标尺错 | 换标尺 |
| 读数低 | 厚度薄 | 加厚度 |
| 读数高 | 温度低 | 控温度 |
| 硬度飘 | 批次漂移 | 锁窗口 |
| 手感差 | 硬度偏 | 调配方 |
Shore A读数要在23℃测，薄件厚度低于6mm读数失真。 试片注塑条件一致，叠测或换刻度才准；硬度多点测量取平均。
硬度验收：每批留样6mm厚试片，23℃测Shore A，±3A以内才放行。 硬度计定期校准；标准不同读数不同，按客户指定标准对表。
同一批料测出两个硬度，不是料漂，是试片厚度或温度没控住。 吸潮影响读数，样品防潮保存；读数异常先复测再下结论。
Shore是TPE的体温计——00档管果冻，A档管软糖到橡皮，D档管硬弹。 手感标尺人人有：奶嘴、牙刷柄、鼠标垫，把Shore值翻译成摸过的东西。
统一试片加校准加23℃后，同批读数从±8A收进±2A。 测试记录归档，人员操作一致；客户摸不出批次差。
硬度是 TPE 的体温计，但读数不对等于没测——试样厚度低于 6mm 读数就失真。
Shore A 测软料要 6mm 以上、叠层测才准；23℃ 恒温放置后测，薄件直接压在玻璃上读数偏软，压足时间再读数。
硬度验收每批留样试片，同一温度同一方法才谈批次差。
同一批料波动超 ±3A 就是两批货；Shore 00 管果冻、Shore A 管软糖到橡皮、Shore D 管硬弹，换刻度别混用，每批留样归档。
硬度测试收尾验收：试样厚度、恒温、留样归档三项随批走。 测 Shore A 要 6mm 厚、23℃ 恒温，每批留样试片归档；波动超 ±3A 判两批货，换刻度别混用。
硬度读数说到底，是把厚度、温度、方法三件事一次锁死。 试样 6mm 厚、23℃ 恒温、同一刻度，每批留样试片；波动超 ±3A 判两批货，别拿读数直接下单。
硬度准不准，换刻度叠层一测便知。 薄件读数失真，叠到 6mm、恒温再测，数据才写进验收。
刻度混用是读数误差的重灾区，Shore 00、A、D 各测各的件，别串用。
科隆客户案例：异味被退回压仓，定制牌号良率98%
广州一家注塑加工厂，TPE 件成品异味被下游退回，货压在仓库。科隆配合定制耐油/耐温专用牌号，异味消除，量产良率稳定在 98%。按工况定制，异味从源头断——气味问题，先查基材和油。
小结
TPE硬度测试的方法，标尺先对，读数再核，参数对得上良率才稳，方法是准星。
Same material tested in two workshops, hardness differs by five degrees. If the ruler and method are wrong, the data is just self-fooling.
If the two workshops differ by five degrees, it's not that the material is floating, it's the method is wrong
TPE For hardness testing, the method and readings are correct to be accurate: ruler, thickness, time. Conclusion first: if the measurement method is wrong, the same piece can read two hardnesses—the method is the foundation of hardness.
TPE The biggest pitfall in hardness testing: if the parameters are correct, yield is stable. If the method is wrong, the readings are wasted—the method is the crosshair of hardness.
TPE Hardness is the quality test: drift and misreading are problems. Only when tested correctly can quality be stable—the quality test, don't skip the standard.
Hardness is a different system, why first recognize the Shore scale
TPE Common Shore hardness: A. Soft tape, D hard rubber. If you choose the wrong ruler, the reading is invalid—the ruler is the foundation of hardness.
Hardness range: SEBS base 0-90A. TPV 40A-60D—range, which is the map of hardness.
Hardness determined by piece: Toothpaste is soft, tool handle is hard. Incorrect hardness, poor feel—hardness is data for tactile feel.
Thickness, time, environment, where are the readings different ?
Thickness: Specimen thickness should be at least 6mm. If the thickness is insufficient, the reading is too low—thickness is the prerequisite for reading.
Time: The reading is read for 1 second after the pin contacts. If the time is too long, the reading drifts—time is the standard for reading.
Environment: 23°C standard temperature. High temperature, lower hardness—environment is the condition for reading.
Shaw Scale, one chart for clear comparison
| Ruler | Range | Purpose |
|---|
| 00 | 0-100 | Ultra-soft |
| A | 0-100 | Soft rubber |
| D | 0-100 | Hard Rubber |
| Reading | Corresponding | Acceptance |
Table Reading: Choose the ruler by hardness, read according to the ruler—ultra-soft 00, soft A, hard D.
Choose a ruler according to hardness for accurate readings.
Accurate readings and repeats, acceptance testing of these four items
| Project | Requirements | Judgment |
|---|
| Ruler | Correct | Compliant |
| Thickness | ≥6mm | Compliant |
| Time | 1 second | Compliant |
| Environment | 23°C | Compliant |
Table reading: Align ruler, thickness, and indenter time one by one; stacked thin parts for accurate measurement—unified measurement methods allow batch hardness to be compared.
Method is the crosshair for hardness.
Random ruler selection and random readings, data can't be used
Plot 1: Random selection with a ruler. Use Shore A for soft materials, 00 for thin parts, misread and differ by several degrees—hardness should be set with a ruler before discussing the values.
Pit 2: Thickness is insufficient. Reading is too low—thickness meets standard.
Pit 3: Time is set randomly. Reading float—1 second reading.
Ruler, thickness, indenter — ask clearly before testing
Triple question: What ruler, thickness of the part, and what temperature. First test: Standard readings measured — three questions and one verification, supplier details are clear.
Method validation must come first: test specimen thickness and indenter residence time follow standards, only allowed if ± is within 3A. Compare the method first, then discuss hardness—the method is the crosshair of hardness.
Make sampling a habit: keep samples for each batch, and retest hardness by batch. Compare batch material changes before scaling up—stable batches, few customer complaints.
Readings are unreliable, inaccurate: compare with a table
| phenomena | causes | countermeasures |
|---|
| readings drift | wrong ruler | replace ruler |
| low readings | thin thickness | increase thickness |
| High reading | Low temperature | Temperature control |
| Hardness drift | Batch drift | Window lock |
| Poor hand feel | Hardness biased | Formula adjustment |
Shore A reading should be measured at 23°C; if the thickness of thin parts is below 6mm, the reading will be distorted. Test specimens under consistent injection molding conditions; stacked measurements or scale changes are accurate; Hardness multi-point measurements are averaged.
Hardness acceptance: Each batch retains 6mm thick specimens, measure Shore A at 23°C, and only release if ± is within 3A. Regularly calibrate the hardness tester; Different standards have different readings; compare according to customer-specified standards.
If two hardness levels are measured in the same batch, it's not due to material bluff, but because the sample thickness or temperature was not controlled. Moisture absorption affects readings; samples should be stored to prevent moisture; If readings are abnormal, retest first before drawing conclusions.
Shore is a TPE thermometer—00 tube jelly, set A tube gummy to rubber, D tube hard spring. Everyone has a tactile gauge: pacifier, toothbrush handle, mouse pad—translate the Shore value into something you have touched.
After standardizing the test piece and calibration at 23°C, the same batch reading is collected from ±8A to ±2A. Test records are archived, and personnel operate consistently; Customers cannot detect batch differences.
Hardness is a TPE thermometer, but incorrect readings are equivalent to not being measured—if the sample thickness is below 6mm, the reading is distorted.
Shore A: For soft materials measured by 6mm or more, layering is accurate for testing; After being placed at 23°C for testing, if the thin part is pressed directly against the glass, the reading is too soft; wait enough before reading.
Hardness acceptance requires retaining samples for each batch; only discusses batch differences at the same temperature and method.
If the same batch fluctuates over ±3A, it means two batches; Shore 00 tubes for jelly, Shore A tubes for gummy to rubber, Shore D tubes for hard spring—change the scale and don't mix, keep samples for each batch and archive.
Hardness test final acceptance: sample thickness, constant temperature, and sample retention and archiving are all handled with the batch. Measure Shore A requires 6mm thickness, constant temperature at 23°C, and keep samples for each batch for archiving; If the fluctuation exceeds ±3A, it's considered two batches; change the scale and don't mix them.
Hardness readings ultimately mean locking in thickness, temperature, and method all at once. Samples 6mm thick, constant temperature at 23°C, same measurement level, keep samples for each batch; If the fluctuation exceeds ±3A, two batches are counted; don't order directly based on readings.
Hardness accuracy is accurate and you can know by layering the scale and testing once. If the reading of thin parts is distorted, stack to 6mm and test at constant temperature before the data is entered for acceptance.
Mixing scales is a major hotspot for reading errors; Shore 00, A, and D each test separate parts, do not mix and sell.
Cologne customer case: odor returned to the storage bin, custom grade yield 98%.
A plastic injection molding factory in Guangzhou had finished TPE parts returned by downstream clients due to odor, and the goods were piling up in the warehouse. Cologne assisted in customizing oil-resistant/temperature-resistant special grades, eliminating the odor, with mass production yield stabilizing at 98%. Customizing according to working conditions cuts off the odor from the source—when facing odor problems, first check the base material and oil.
Summary
The method for testing TPE hardness: first align the scale, then verify the reading; only when the parameters match will the yield be stable. The method is the benchmark.
