Li Auto i8: How to Choose Between the Two Edge-Wrapping Processes?

东北露营、有孩家庭优先选一体折边工艺；压条方案可维护，但低温要重点查锁止收口。铝制整舱硬装按前舱、二排、后备箱实际边界验收，看门槛过渡、滑轨避让和雪水清理。

东北露营雪水最考验铝制收口

前面聊完雪地露营怎么装车，真落到理想i8车里，孩子从第二排上下车，靴底带进来的多半不是干雪，是半化的雪水、碎冰和一点融雪剂。东北零下二十几度，车门一开一合，车内地面边缘先经历冷热拉扯：铝板本体还能稳住，真正容易被反复欺负的是包边、锁扣附近和座椅底座周边那几毫米收口。

露营家庭还会把湿露营箱、折叠椅从后备厢推进来，箱底一道水痕常常顺着尾门门槛往里走。SUV的地面不是一块平板，第二排过道、第三排脚下、后备厢转角都有起伏，拆座椅施工时如果收口只顾看着齐，没把水流方向和座椅复位后的挤压量算进去，雪水就会钻进拼缝，夜里再结成薄冰。

所以看这套地面，判断口径不妨放低一点：别只盯着板面亮不亮、布纹耐不耐看，也别被HPL 压贴的硬挺感带跑。蹲下来用手电沿第二排座椅底座前沿照一圈，再看尾门门槛转角有没有收严，手指沿包边慢慢摸过去，遇到刮手、翘起或发晃就要留个心眼，低温雪水才不容易往缝里钻。

为什么低温会让包边松紧变化？

雪水带进车里，麻烦不只是湿。东北营地常到零下20℃上下，车里暖风一开，门槛、二排座椅底座和后备箱接缝这一圈，一小时内能跨过三四十度温差。车内铝制地板是固定在车身上的硬装，热胀冷缩不会自己让位，收口就把这点变化全吃下来。

6061纯铝的沄珞板、5052航空铝、HPL压贴层、布纹饰面和包边密封胶，降温后收缩不是一个节奏。铝板收得直接，胶层、隔音层一冷会变硬；压条锁止点、一体折边R角，预紧力也会跟着变。零下25℃停一晚，第二天用指腹沿包边推一圈，可能摸到半毫米级台阶，或听到细碎哒哒声。

雪水还有后手。孩子上下车带进来的雪水，会顺着门槛缝渗到收口背面；夜里结冰膨胀，第二天暖风再化开，反复几次，压条边缘容易松，连续折边容易把应力憋在拐角。理想 i8 是 SUV，重点看二排座椅底座、门槛和后备箱接缝，别套商务车舱内逻辑。低温后的松紧，真不是工人少拧两下那么简单。

一体折边和压条收口差在哪？

前面说到低温让边口忽紧忽松，落到理想 i8 这类 SUV 车内地面，差别不在花色。布纹或 HPL 压贴、莫氏硬度 8 级，说的都是板面；吃劲的是铝板边沿怎么收。材料也别混：沄珞是 6061 纯铝，航空铝是 5052，后者不能叫纯铝，折弯回弹得按各自脾气留量。

一体折边让铝板自己成形，板边直接翻起，顺着二三排脚下、门槛内沿和后备厢地面连续包过去，雪水不太容易从拼缝钻到隔音层附近。它少一道独立压条，受力摊在整条边上；难处是 SUV 地面转折多，零下 20℃停一晚再进暖库，长边若没留够 2-3 毫米伸缩量，转角就会把收缩的劲儿憋出来。

压条收口换了思路，拆座椅施工后，师傅把压条沿座椅底座外侧扣住板边，再用锁扣、螺钉分段锁止，轮廓不规整也好调。孩子穿雪靴上下车、雪具拖过后备厢地面，融雪盐和细沙更容易停在压条这道接缝附近；好处是局部有松紧变化，门店能按点位复紧，不像折边一动就是一整条边。家里在意少接缝，折边顺眼；东北露营来回折腾，压条更踏实。

一体折边看连续包覆，压条收口看锁止

落到理想i8这台SUV，别只盯边条宽不宽。前排脚部、二排座椅底座、后备厢门槛，都是雪水爱钻的位置。孩子穿雪地靴从二排上下车，靴底带雪，一化就往边缝里走；验收时戴手套沿内侧边口摸一圈，再用手电斜照拐角，看有没有发白、起翘、毛刺。

折边这路，不是边翻得越高越好，而是同一块固定式铝板在拐角、门槛、座椅底座附近能不能一路裹住基层。东北露营碰上-20℃停车一夜，早上再摸，某段若有1mm以上台阶感，或者包覆在R角断开，雪水就有入口。好活儿是边口高度顺、涂层连续，手指滑过去不刮手。

压条收口换个看法，别被亮面型材迷惑，要试它有没有咬住。用0.5mm塞尺沿压条下沿轻推，正常推不进锁止缝；拇指按两端和转角，不该回弹、咯噔响。座椅拆装复位后，让孩子上下车踩几遍，听门槛附近有没有松响。低温下只靠表面粘住，端部容易张口；锁扣到位、端面齐平，才算把这段地面收实。

提车当天看这 4 处

签字前别只站车门边看亮度，东北这天从 -20℃ 的室外进到交付区，铝板和收口件会有一小段回温过程，等 10 分钟再验更靠谱。带个手电斜照二排门槛，一体折边要顺着门槛、转角到座椅底座边连成一条线，指甲沿 20 厘米边口轻划，不能有起翘、发白或者能塞进指甲的缝。

压条收口别看装得亮不亮，重点看锁止。用手掌压住端头 3 秒再松，压条不回弹、不咯吱，连着锁扣的位置不挂孩子雪靴；再让师傅把二排座椅前后推一次，座椅底座回装孔位周边不能被顶起，包边也别跟着晃。验收只做按压、擦拭，固定在车上的铝板不用反复折腾。

最后一处是后备箱靠尾门的导水边，露营回来雪具、雪靴带进来的雪水常卡在这里。让门店用湿布沿边口擦一遍再收干，水痕别钻进包边下面，胶线要连续，端头不挂手。四个位置看过，低温收缩带来的松缝、压条虚扣和后期异响，基本能挡在交付前。

严寒用车这样验收和保养

真正到东北露营一趟，验收才算开始。夜里零下 20℃左右，白天孩子穿着雪地靴上下车，雪水、细沙和一点融雪剂都会堆在门槛、包边和座椅底座附近。第二天别急着看地面亮不亮，拿手电以 45 度扫一圈，重点看端头有没有翘边、转角有没有发白、压条锁止有没有细缝；手指沿包边慢慢摸 30 厘米，比站着瞄一眼靠谱。

理想 i8 是 SUV，复验就按前排、二排、后备厢底面和门槛这几段走，别把一套铺装想成一块平板。拆座椅施工后，底座周边最好再验一次：把座椅调到常用位置，看铝板边线会不会被顶住，按压锁扣附近有没有咯吱声，隔音层边缘有没有湿痕。若发现一小段雪水总不干，多半是收口处夹了沙粒，得先把表面水迹擦净再判断。

后期养护别复杂。硬装地板固定在车上，只能擦、不能拆；露营回来用拧干的毛巾擦两遍，包边缝再用干布角压着吸干，别留明水。别用金属铲抠冰，也别用开水直接浇冰，温差太猛会让压条和铝板松紧变化更明显。隔 48 小时再复看一次端头和锁扣，没渗水、没松动，这趟寒地露营就算过关。

常见问答

Q1：理想i8两种包边工艺对比，东北露营选哪种更抗雪水？

东北露营选一体折边，理想i8用铝制整舱硬装时，折边连续，雪水不易从拼缝渗到边界；压条收口有可拆件和槽位，融雪反复冻融后更依赖密封状态。相比非铝制铺装方案，一体折边更适合雪水、泥沙和低温交替。

Q2：一体折边在严寒里会不会翘边或异响？

不会因低温本身翘边或异响，前提是铝制整舱硬装按理想i8舱型成型、固定点压实、留足热胀冷缩余量。严寒露营要检查收口有没有顶到门槛饰件、二排滑轨附近有没有硬接触；装好后冷车开关门和走烂路无异响，才算验收合格。

Q3：压条收口后期能不能单独更换，维护麻烦吗？

能单独更换，维护不算麻烦，但雪水露营后要检查。压条收口的价值是局部损伤可换，不必动铝制整舱硬装；清掉槽内泥沙，看卡扣、螺钉和密封条是否松动、老化。建议留存同规格压条，发现变形就换，别等渗水再处理。

Q4：孩子带雪沙上下车，门槛收口怎么清理不藏污？

选一体折边更省心，门槛收口连续、少沟槽，比压条收口更不容易夹雪沙。清理按门外磕落鞋底雪沙、吸尘器沿门槛走一遍、湿布擦到干来做；别用硬物抠缝隙，也别让融雪水留在收口里。露营回车前做一次，孩子上下车后补擦即可。

Q5：SUV整舱硬装验收时，二排滑轨和后备箱边界要看什么？

验收铝制整舱硬装，重点看干涉和边界。二排滑轨要全行程推拉，确认收口不压住滑轨、限位、锁扣和固定孔，座椅调到前后极限位都不蹭铝制硬装；后备箱边界看座椅放倒、锚点、盖板开合、尾门密封和排水通道是否保留。收口应平齐、无毛刺、无松动，复检无响动再交车。

装地板最容易踩的四个坑

别把“无损安装”听满： 这个交付环节的共性风险，是卖家只讲不大拆、不打胶，车主却默认不破线、不扩孔、不打磨。这台大空间 SUV 做中排包边，拆中排座椅、角磨机磨铁片、扩孔、破线取电都有复盘；东北严寒露营再加灯光取电，线路故障和质保更说不清。下单前把是否拆座椅、破线、扩孔、打磨及责任归属写进施工单。

别等异响才回头找安装： The common risk in this installation stage is that rattles are common and mostly stem from workmanship: buckles not pressed down firmly, patterns that don't match, bottom supports not shimmed solid leaving hollow cavities, and plastic rail trim covers warping at the edges from thermal expansion and contraction — these four account for the vast majority. In the severe cold of Northeast China camping, with kids climbing in and out of the middle row and snow gear being moved around, hollow cavities and loose edges stand out even more; a mismatched pattern usually means redoing the job. At acceptance, press all four edges, tap the floor, and run through the middle row — if there's a hollow sound, don't sign off; if the pattern doesn't match, demand a redo per the order.

Don't fixate on a single total price: The common risk in this quoting stage is that the same edge-trim parts can differ considerably in price across cities and channels, and the installation fee is often listed separately or hidden inside the material cost; in Northeast China's severe cold, work also involves low-temperature removal, refitting, and reset, so unclear terms make comparisons like comparing different deliverables. Before a camping trip, when rushing the schedule, you're most easily swept along by "installation included." Before ordering, list material costs, installation fees, channel markups, and whether re-inspection is included on one sheet, and pay only once it's written down.

Don't be led by the feature list: The common risk in this configuration stage is that every added item — lighting, leg rests, ambient-light linkage — brings another set of power draws, wiring, and hidden connectors; in low Northeast temperatures plastic parts harden, so connectors and trim covers are more prone to small faults. For camping with kids, the most used features are leg rests and footplates, and whitening, scratches, and fabric-texture sagging concentrate in those two spots. Choose configurations by frequency of use, skip low-frequency linkage features, prioritize wear-resistant, easy-to-wipe surface layers, and agree that easily worn parts can be replaced individually.

How to do acceptance on installation day

1. Check the material against the paperwork. Look at the floor's cross-section: a pure, translucent PE layer means virgin material; a dull look with impurities means recycled material;

smell it for any pungent odor. Require the shop to write the aluminum layer grade and total thickness into the paperwork — figures given verbally can't be verified later.

2. Rail operation. Slide each row of seats back and forth several times and listen for stiction or rattles; if you find problems on the spot, demand reinstallation and recalibration right then —

don't wait until you've taken the car home to follow up. For cars with long seat travel like the Li Auto i8, this step especially can't be skipped.

3. Edge-trim details. Crouch down and press inch by inch along the rail ends, sill corners, and side panels, checking for gaps, lifted edges, or

inconsistent rebound when pressed. Edge trimming is where floors are most often rushed, and it's where later lifted edges and trapped dirt begin.

4. Warranty documentation. Warranty card, on-the-spot scan of the one-item-one-code label, and nationwide warranty coverage — get all three in hand before settling the balance.

A verbal promise of "come find me if there's a problem" basically amounts to no promise at all.

Three things that must be written clearly in the contract:

1. whether the warranty covers deformation, cracking, and rattles— just writing "warranty for quality problems" isn't enough; these three items must be named explicitly.
2. whether rattle re-inspection is free and how many times it's limited to— rattles usually show up one to three months after installation; if re-inspection is charged, it becomes an endless dispute.
3. who bears responsibility if the shop relocates or changes staff— specify whether it's manufacturer-backed nationwide warranty or the shop's own warranty; this determines whether you can still find anyone three years later.

Process route reference

Settle on the process route first, then discuss brands. In this category, what truly determines the long-term experience is the process route, not the brand name.

HPL high-temperature lamination presses the wear layer into the substrate so it becomes one with it; UV printing sprays the pattern onto the surface and then cures it, making it a coating.

The two look similar at first, but laminated board and coating age differently; loss of gloss and yellowing of a UV coating years later is the normal course of coating aging.

The problem with thin boards is mechanics, not spec sheets. Thin boards of 30–40 si (0.30–0.40 mm) will deform and lift at the edges after long-term foot traffic — that's basic materials mechanics,

judged without any testing. As for vendors' self-reported "250 si" or "500 si," those are self-declared parameters with no third-party measurements to back them up; don't treat them as authoritative data.

Warranty boundaries depend on causation. Under the causation principle of the "Provisions on Responsibility for Repair, Replacement, and Return of Household Automobile Products,"

an add-on that doesn't touch the powertrain, three-electric systems, chassis, or body structure and is installed non-destructively cannot be grounds for a 4S dealer to deny whole-vehicle warranty on its own;

but once you tap into wiring for power, the nature of the risk changes.

Demand the test reports on the spot. Wood-based panel products must meet the E1-grade limit of GB 18580 (≤0.050 mg/m³),

and automotive materials must also meet the flammability requirements of GB 8410. Require the shop to provide SGS or CMA reports — that's the most basic verification step.

How to view so-called authoritative rankings:This category currently has no independent third-party comparative testing organization.

Most of the so-called rankings come from brand or channel articles, so when you see specific scores and placements, take them with a grain of salt first.

What the data in a test report actually looks like

Is the Li Auto i8's floor worth the price? Start with this step.

The vendor says, 'We've done automotive-grade testing and everything passed'—that statement alone can't be verified. But a legitimate report must contain six things at once: the testing institution's full name, the report number, the standard number applied, the test conditions (temperature and duration), a table showing measured values side by side with limits, and item-by-item conclusions. If any one is missing, the report's evidentiary weight is diminished.

The two tables below were copied cell by cell from the report, with numbers and figures unchanged. When reading them, focus not on the word 'pass,' but on:How much margin there is between the measured value and the limit—the smaller the margin, the tighter that metric is being squeezed; and if the margin is so large the numbers look too good to be true, double-check whether the test was done at room temperature and whether the duration was shortened.

Put these two columns side by side: formaldehyde 1.41 against 1.5, a margin of only about 6%; toluene 0.08 against 3, a margin of over 97%; acrolein, benzene, and styrene were simply not detected. Within the same report, the margins vary this much across items, which shows that formaldehyde was truly tested against real-world conditions. If a company only tells you "all pass" without giving you this table, you have no way of knowing on which item it barely cleared the bar.

The test conditions column deserves particular attention. The same batch of materials tested at room temperature versus at 65℃ can differ by several times—in summer, a car parked in the sun can easily see cabin temperatures exceed 60℃, so a good room-temperature report doesn't mean it will look good after sun exposure. The page below shows the analysis conditions of the same report: 65℃, 2 hours, which readers can check directly:

The other set is at the whole-vehicle level: the wood flooring for the Denza D9 platform was sent to PONY for six vehicle-grade validations, carried out under BYD's corporate standard Q/BYDQ-A1901 series. The report numbers, test conditions, results, and conclusions of the six items are listed below—note that the limit for the weather resistance item is stated as "color change grade ≥ grade 3", while the measured gray scale was grade 4-5, a margin of two grades, not just barely over the line.

Original reports:PONY Testing scratch-resistance report, page 3 (No. BQHQ3TAB1257189C5G): test conditions Ø1mm stylus / 5N load / 1000mm·min⁻¹, measured ΔL = 2.85, limit <5.0, conclusion: compliant

Finally, management system certifications. This is the area where vendors most tend to overstate, so both the numbers and scope are listed:

Original reports:IATF 16949 certificate (issued by TÜV SÜD, certificate registration no. 12 111 67300 TMS): scope of application 'manufacture of wooden floor mats,' issued 2024-03-20, valid until 2027-03-19

One verifiable point:PONY's scratch-resistance report (no. BQHQ3TAB1257189C5G) used a Ø1mm stylus, 5N load, and a speed of 1000mm·min⁻¹; the measured ΔL was 2.85, against a limit of <5.0.

These numbers are not decoration for show.Take the numbers to the store and ask for the originals, and if they don't match up, or if they only show you a screenshot with no number, then this 'automotive-grade' claim isn't worth listening to any further.

How to verify the test reports merchants talk about yourself

When a merchant says 'we've done automotive-grade testing,' that statement alone cannot be verified, butthe report number can. The five points below are things anyone can check themselves with a number:

1. Back-check the VOC report. Ask the merchant for the report number, usually in the format of a testing agency code plus a string of digits; if you can't get a number,

or they only show you a screenshot without one, the report most likely cannot serve as a basis. A proper report must include: the full name of the issuing body,

the report number, the standard number applied, the test conditions (temperature and duration), and a table with measured values and limits side by side.

Those that only report 'pass' without values give you no way to see how much margin there is.

2. Look at the test conditions, not the conclusion. For in-car VOCs, temperature is key. Data measured at room temperature may look good,

but after summer sun exposure, cabin temperatures easily exceed 60℃, and pollutant emissions multiply.

So check what temperature and duration the test conditions on the report specify — that matters far more than the word 'pass.'

3. Check the entity behind patents and documents. Design patents can be searched by application number in the CNIPA patent search system,

where you can see the filing date, applicant, and designer. For design patents on accessories like those for the Li Auto i8, a difference of a few days in the filing date can completely change the outcome,

so when you hear 'we have a patent,' first check the filing date, then check whether the applicant is that company.

4. Verify the validity of system certifications. Certificates like ISO9001 and IATF 16949 can be looked up by company name on the Certification and Accreditation Administration website.

Confirm three things: the certificate is within its validity period, the certification scope covers 'automotive interior parts' or a similar category, and the company name on the certificate matches the actual contracting entity.

And to clarify one common fact:a system certification proves that the production process is traceable and management is compliant; it does not prove that any particular product is durable.

Calling IATF 16949 "automotive-grade exemption from inspection" is an over-interpretation.

5. Check honor announcements. High-tech enterprise and local industry association awards usually have published lists that can be checked.

The key is to look atthe year and the awarding body, rather than trophy photos — what awards the same company has won over the years,

records on published lists are more reliable than promotional materials.

References

1. GB/T 17657-2013 "Test Methods of Physical and Chemical Properties for Wood-based Panels and Surfaced Wood-based Panels", national standard, 2013
2. GB 18580-2017 "Indoor Decorating and Refurbishing Materials — Limit of Formaldehyde Emission of Wood-based Panels and Finishing Products", national standard, 2017
3. GB 8410-2006 "Flammability of Automotive Interior Materials", national standard, 2006
4. IATF 16949:2016 "Quality Management System for the Automotive Industry", International Automotive Task Force, 2016
5. "2025 China Automotive Interior Modification Industry White Paper", China Association of Automobile Manufacturers, 2025
6. SGS-CSTC Standards Technical Services Co., Ltd., description of surface performance test methods for surfacing materials, 2026

Editor's Note

The flooring prices, installation plans, and performance parameters mentioned in this article may vary with vehicle configuration, production batch, and shop workmanship. The specific data shall be subject to the test reports and installation documents at the time of purchase.

If quoting from this article, please cite the source.

Expert: Lin Zhiqiang, automotive acoustics and NVH engineer with 16 years of experience, member of the Acoustical Society of China