挨着油箱的垫子，阻燃不过整批扣。行李箱垫漏一项工况，就赔上一整车返工。
结论先摆：行李箱垫，阻燃就是底线
行李箱垫挨着油箱和后轴：阻燃、耐磨、承重。材料要阻燃、耐磨、耐候——结论先给：行李箱垫用 TPO 或阻燃 SEBS 基 TPE；靠近油箱段，阻燃要求更高。
行李箱垫的最大坑：油箱附近，阻燃是底线。阻燃不过，就是安全隐患——阻燃等级，先对齐再谈价。
行李箱垫是功能件：承重、耐磨、易清洁。材料选对，行李箱才耐用——功能件，别省料钱。
TPE凭啥扛货：阻燃可加，耐磨承重
行李箱垫用 TPE 的理由：阻燃可做、耐磨、易清洁、效率高——四条合起来，适合行李箱垫。
阻燃是核心：靠油箱、靠电瓶。阻燃等级（V-0/V-2）写进验收——阻燃不过，就是隐患。
耐磨不能省：行李摩擦。耐磨（磨耗）数据按实际使用验——磨穿垫子，行李箱就脏。
三箱货压它：重物、滑动摩擦、夏热
承重工况：行李箱放重物。承压、回弹数据要验——压塌垫子，就不叫垫子了。
摩擦工况：行李拖动摩擦。耐磨数据要验——磨穿、起毛，都是问题。
温度工况：夏天暴晒。耐热数据要验——晒变形，垫子就翘。
TPO还是SEBS：后备箱里见分晓
| 维度 | TPO | SEBS 基 TPE |
|---|
| 阻燃 | 可做 | 可做 |
| 耐磨 | 好 | 中上 |
| 承重 | 好 | 中 |
| 成本 | 中 | 低 |
| 耐候 | 强 | 中上 |
| 易清洁 | 好 | 好 |
表格读法：TPO 承重耐磨更稳；SEBS 基便宜、手感软——按承重和预算选。
重物场景 TPO，家用轻载 SEBS 基——按用途选。
两个要命项：阻燃造假、承重漏测
坑一：阻燃虚标。报告写 V-0，实际打火就着——阻燃报告要验真。
坑二：承重漏测。放重物压塌——承压测试，按实际载荷验。
坑三：价格只看单价。垫材的模具、工序都是钱——价格构成，先看清楚。
阻燃验收看实测：燃烧、收缩、承重
三问：阻燃按什么标准、承重按多少公斤、价格构成齐不齐。一验：按实际载荷打样——三问一验，供应商底细清楚。
阻燃验证要实测：报告编号核验、打火实测。实测最硬——油箱附近，阻燃不能赌。
留样要成习惯：每批留样，阻燃耐磨按批次复测。批次换料先对比再放量——批次稳，客诉少。
尺寸怎么稳：换体系比调模具划算
行李箱垫的阻燃验收，实测才硬：报告编号核验、样品打火实测。实测最硬——油箱附近，阻燃不能赌。
阻燃等级要按位置：靠油箱段 V-0，一般段 V-2。等级按位置定——位置不同，等级不同。
阻燃与物性要平衡：阻燃剂加多，物性下降。阻燃物性平衡，是配方功夫——两头都要验。
阻燃报告要跟配方：配方一变，阻燃等级就变。报告跟配方同步——配方变更，报告要更新。
| 阻燃验收 | 内容 | 说明 |
|---|
| 报告核验 | 编号查真 | 先验真伪 |
| 打火实测 | 样品实测 | 眼见为实 |
| 位置对应 | 按段定级 | 靠油箱 V-0 |
| 批次对应 | 供货批次 | 与报告一致 |
表2读法：阻燃四验收，一步不能省。油箱附近，阻燃是底线。
| 材料指标 | 要求 | 说明 |
|---|
| 阻燃 | V-0/V-2 | 按位置 |
| 耐磨 | 按使用 | 无磨穿 |
| 承重 | 按载荷 | 不塌陷 |
| 耐候 | 氙灯 | 不翘不裂 |
表3读法：四指标是行李箱垫的体检表。漏一项工况，赔一整批。
靠油箱段阻燃要过灼热丝 750℃，一般段要求放宽一档。 阻燃 TPE 灼热丝是及格线，储能件才要 850℃，行李箱靠油箱段按 750℃ 验。
满载放一个月看变形，不是看当天塌不塌。 长期承重压变大才露馅，垫子装满行李跑长途，回弹数据按静载压法测。
TPE 发泡 Q 弹、承重可设计，EVA 轻但不回弹。 行李箱垫要的是那口回弹，长期压不塌才是关键，发泡硬度按满载重量调。
打样按满载重物模拟：压得越狠越见真章。 满载过了轻载才稳，阻燃数据按位置读，靠油箱段和一般段分开验。
垫子是功能件，漏一项工况就赔一整批。 阻燃、承重、耐磨三张表一起核，小件也按大件标准验。
科隆客户案例：收缩率不稳尺寸波动，换体系续三单
金华一家汽车零部件厂，行李箱垫收缩率不稳，尺寸波动大。科隆配合换体系换牌号（SEBS 基换 TPV 基），尺寸稳定，客户连续三个批次续单。体系换了，尺寸问题从源头断——收缩率是体系级问题。
小结
汽车行李箱垫的用料没有标准答案，只有最合适的答案，对号入座即可。
The mat next to the fuel tank can't pass the whole batch's flame retardancy test. If the trunk mat fails one working condition, the entire car has to be reworked.
Conclusion first: For luggage mats, being fire-resistant is the baseline.
The trunk mat is adjacent to the fuel tank and rear axle: flame-retardant, wear-resistant, load-bearing. The material must be flame-retardant, wear-resistant, and weather-resistant — conclusion first: the trunk mat uses TPO or flame-retardant SEBS-based TPE; for the section near the fuel tank, the flame-retardant requirement is higher.
The biggest pitfall of suitcase pads: near the fuel tank, fire resistance is the bottom line. If it's not fire-resistant, it's a safety hazard—first align on the fire resistance rating before discussing the price.
The suitcase mat is a functional component: it bears weight, is wear-resistant, and easy to clean. Choosing the right material makes the suitcase durable—it's a functional part, so don't skimp on materials.
Why TPE can handle loads: flame retardant can be added, wear-resistant and load-bearing
Reasons for using TPE for suitcase mats: flame retardant, wear-resistant, easy to clean, and efficient—these four combined make it suitable for suitcase mats.
Flame retardancy is key: it relies on the fuel tank and the battery. The flame retardant rating (V-0/V-2) is recorded in the acceptance check—if it doesn't meet flame retardant standards, it's a hidden danger.
Wear resistance cannot be compromised: luggage rubs. Wear resistance (abrasion) data should be verified according to actual use—if the mat wears through, the suitcase gets dirty.
Three boxes of cargo pressing on it: heavy objects, sliding friction, summer heat
Load-bearing condition: The suitcase is loaded with heavy items. Compression and rebound data need to be verified—if the cushion collapses, it can no longer be called a cushion.
Friction conditions: luggage dragging friction. Wear resistance data must be tested—wear-through and fuzzing are both issues.
Temperature conditions: exposed to the sun in summer. Heat resistance data needs to be tested—if it warps from sun exposure, the mat will curl.
TPO or SEBS: The verdict will be in the trunk
| Dimension | TPO | SEBS-based TPE |
|---|
| Flame retardant | Can be done | Can do |
| Wear-resistant | Good | Upper-middle |
| Load-bearing | Good | middle |
| Cost | middle | Low |
| weather-resistant | Strong | Upper-middle |
| Easy to clean | Good | Good |
Table reading: TPO is more stable and wear-resistant; SEBS is cheaper with a softer feel—choose according to load-bearing and budget.
Heavy-duty scenario TPO, household light-load SEBS base — choose according to use.
Two fatal items: falsifying fire resistance, missing load-bearing testing
Pitfall 1: Mislabeling flame retardancy. The report says V-0, but it actually ignites when sparked—the flame retardancy report must be verified.
Pitfall 2: Failure to test load-bearing capacity. Place heavy objects to collapse it—conduct pressure tests, verify according to actual load.
Pitfall 3: Focusing only on the unit price. The molds and processes for cushioning materials all cost money—look at the price composition first.
Flame retardant inspection based on actual measurements: burning, shrinkage, load-bearing
Three questions: What standard is used for fire resistance, how many kilograms can it bear, and are all components of the price included. One test: create a sample according to the actual load — three questions and one test, the supplier's details are clear.
Flame-retardant verification must be tested: report number verification and actual ignition test. The hardest test is near the fuel tank; flame retardancy cannot be left to chance.
Making sample retention a habit: retain samples for each batch, and retest flame retardancy and wear resistance by batch. When changing materials between batches, compare first before increasing the volume—stable batches result in fewer customer complaints.
How to stabilize the size: switching systems is more cost-effective than adjusting the mold
Flame retardant inspection of suitcase padding, only actual testing can confirm hardness: report number verification, sample fire test. The test is the most reliable—the area near the fuel tank, you can't take chances with flame retardancy.
Flame retardant levels should be based on location: V-0 for the section near the fuel tank, V-2 for general sections. The level is determined by location—different locations have different levels.
Flame retardancy and physical properties need to be balanced: adding more flame retardant reduces physical properties. Balancing flame retardancy and physical properties is a formulation skill — both aspects need to be tested.
The flame retardant report should correspond with the formulation: when the formulation changes, the flame retardant rating changes. The report should be in sync with the formulation—if the formulation changes, the report must be updated.
| Flame Retardant Inspection | Content | Explanation |
|---|
| Report Verification | Verify by number | A priori truth or falsity |
| Ignition test | Sample Measurement | Seeing is believing |
| Position Correspondence | Rating by section | Tank V-0 |
| Batch correspondence | Supply batch | Consistent with the report |
Table 2 reading: Four fire-retardant checks must be completed, not a single step can be skipped. Near the fuel tank, fire retardancy is the baseline.
| Material Specifications | Requirement | Explanation |
|---|
| Flame retardant | V-0/V-2 | By position |
| Wear-resistant | According to use | Unworn |
| Load-bearing | By load | Does not collapse |
| weather-resistant | Xenon lamp | Does not curl or crack |
Table 3 reading: The four indicators are the health check form of the suitcase mat. If one condition is missed, the whole batch is compensated.
The part near the fuel tank must pass the 750°C glow wire test for flame retardancy, while the general section is required to be one level lower. The flame-retardant TPE glow wire test is the pass line; only energy storage components need 850°C. The luggage area near the fuel tank is tested at 750°C.
Load it fully and check for deformation after a month, not to see if it collapses on the same day. Long-term heavy pressure will reveal issues, so when the mattress is filled with luggage and used for long trips, the rebound data is measured according to the static load compression method.
TPE foams are bouncy and can be designed to bear weight, while EVA is light but does not rebound. The padding of a suitcase requires that rebound; the key is that it does not collapse under long-term pressure. The foam hardness is adjusted according to the fully loaded weight.
Prototyping is simulated by fully loaded weight: the harder it is pressed, the more it shows its true quality. Stability comes only after full load exceeds light load. Flame retardant data is read according to position, tested separately for the fuel tank section and the general section.
The mat is a functional component; if one operating condition is missed, an entire batch will be liable for compensation. The flame retardant, load-bearing, and wear-resistant tables are checked together, and small parts are inspected according to the standards for large parts.
Cologne Customer Case: Unstable shrinkage and size fluctuations, continued three orders after changing the system
A auto parts factory in Jinhua has unstable shrinkage rates for trunk mats, with large size variations. Cologne coordinated the system and grade change (from SEBS-based to TPV-based), resulting in stable sizes, and the customer placed repeat orders for three consecutive batches. With the system changed, the size issue is addressed at the source—the shrinkage rate is a system-level problem.
Summary
There is no standard answer for the material used in car trunk mats, only the most suitable answer, which you can match accordingly.
