183 咖啡机与破壁机件
咖啡机的工况清单
咖啡机内部同时存在90-100℃ 热水、蒸汽、9-15 bar 压力、以及食品接触要求。
这四件叠加，普通工程塑料直接出局。咖啡机是家电里对材料要求最苛刻的品类之一，成本也最高。
食品接触是硬门槛
咖啡机所有接触水和咖啡的部件必须通过食品接触认证：国内 GB 4806.7、欧盟 EU 10/2011、美国 FDA 21 CFR。
三重认证同时成立才算合规。不是所有 PA66 都能过食品级，要选有认证的牌号，并且加工过程中不能添加非食品级助剂。
现场还原：一台咖啡机的六个温区
2025 年 4 月，宁波一家咖啡机厂的实验室里，研发工程师给我们看了一张红外热像图：一台在研的全自动咖啡机，开机二十分钟后，机身六个位置的温度从 40℃ 到 120℃ 梯度排开——锅炉附近 120℃，水路接头 95℃，豆仓 55℃，外壳 45℃。
「一台机器六个温区，塑料件按温区落料，这是咖啡机选材的全部难点。」工程师说这话的时候，我们在本子上把这句画了线。
按温区落料听上去简单，实际是行业里翻车最多的地方：锅炉附近的密封件用普通硅胶几年就硬化开裂，水路接头用通用 PA 吸水后尺寸漂、密封失效漏水，豆仓件用含析出物的料——咖啡油脂和析出物混在一起，清洁都清洁不掉。
我们按温区给的建议：锅炉区密封走氟橡胶或硅胶专用牌，水路接头走耐水解 PA 专用牌（热水反复冲刷加食品接触双门槛），豆仓和外壳件才轮到通用料省成本。
这家厂的机型后来拿了行业里的能效和耐用性双认证，他们的体会是：咖啡机的钱花在温区材料上，回报是「十年不出水路故障」这个卖点本身。
高温水路的材料选择
锅炉和加热腔内衬：走不锈钢或 PPSU。水管和接头：走食品级 PA12 或 PPSU，耐 100℃ 热水和蒸汽。水泵和阀体：走 PPS 或食品级 PA66-GF30。普通 PA66 在 100℃ 热水里水解很快，必须走耐水解或长碳链（PA12）。
PPSU 为什么是高端选择
PPSU（聚亚苯基砜）耐温 200℃、耐水解、食品级、可蒸汽消毒，是咖啡机和奶瓶的高端材料。
缺点是价格高（是 PA66 的 4-6 倍）、加工温度高（360-400℃）。
中低端咖啡机用食品级 PP 和 PA12 组合，只在关键高温件上用 PPSU。
深一层：食品接触的合规账
聊咖啡机和破壁机，绕不开食品接触材料的合规问题，把这笔账算清楚，很多报价差异就理解了。
食品接触材料在国内走 GB 4806 体系，出口欧洲走 EC 1935/2004 加 LFGB，美国走 FDA——三套体系的测试项不完全一样，但核心都盯三样：迁移量（塑料里的东西往食品里跑多少）、感官（不能有异味）、特定物质限量（单体、助剂残留）。
对 PA 系的具体影响在这几条：己内酰胺残留量是 PA6 的专项指标，PA66 的环状寡聚物也在监测列表里；脱模剂和着色剂要选食品级牌号，通用工业级料直接排除；抗菌剂、爽滑剂这类助剂的使用清单比工业料窄得多。
合规的成本结构是：食品级牌比同性能工业牌贵 15-30%，加上每年一次的迁移测试和体系审核。这笔钱省不了——食品接触违规的处罚是按批召回加下架，一次事故就把品牌几年攒的口碑清零。
给整机厂的实操建议：水路和食品接触位的料单锁定食品级牌，供应商名录里按「有 GB 4806 全项报告」筛选；非接触位放开用工业牌降成本。两条线分开管，合规和成本就都有了各自的解。
破壁机的高转速挑战
破壁机转速 3-5 万 rpm，刀组轴承座和杯体要承受高转速振动。
杯体走食品级 PC 或 Tritan（共聚酯），不能用 PA——PA 不透明且可能有气味。
刀组固定座走 PA66-GF30，要耐疲劳和振动。噪音是破壁机的最大痛点，结构上要做减振。
降本与安全的边界
小家电降本压力大，但咖啡机有三处不能降：高温水路件（漏水烫伤）、压力腔体（爆裂风险）、食品接触面（析出风险）。
这三处出事都是安全事故，不是维修问题而是召回问题。可以降的是外壳装饰件和非承压件。
工程实测：4 条强制测试
测试1：耐热水。100℃ 热水 1000 h，PA12 强度保持 92%，普通 PA66 降至 55%——热水路走 PA12。
测试2：食品接触。食品级 PA12 通过 GB 4806.7 + FDA + EU 三重认证——必须查证书。
测试3：耐压。15 bar 压力腔体，PPS-GF40 通过，PA66-GF30 在 12 bar 变形——高压走 PPS。
测试4：破壁机振动。3 万 rpm 振动 100 h，PA66-GF30 固定座无松动，未增强 PA66 松动。
追问三连：采购最常问的三件事
一问：PPSU 为什么贵还抢着用。 PPSU（聚苯砜）在咖啡机水路件上的地位来自三样同时在线：耐高温（180℃ 蒸汽消毒不水解）、抗冲击（不脆）、食品合规成熟（婴儿用品级背景）。缺点就一个字：贵，单价是 PA66 的三倍。高端机水路核心件走 PPSU，中端机走耐水解食品级 PA 改性牌，入门机走 PP——三条成本线都有活路，按机型定位落料。
二问：破壁机的高转速对材料要求什么。 破壁机电机转速两万转以上，杯体连接件和传动件要抗振动疲劳加冲击（冰块撞击）：增韧 PA66 和 Tritan 类透明材料分位落料，传动位 PA、透明杯体位 Tritan。刀组连接件是安全件，验证按最恶劣空载加满载冲击做。
三问：蒸汽阀件的析出问题怎么管。 蒸汽反复冲刷会把料里的低分子物带出来，落在水路里就是水垢之外的「白膜」。管理方式是低析出牌加首月水质抽检——析出问题不在物性表上，要按「沸水析出试验」验，这一项很多报价单上没有，但高端机型全都在查。### 算一笔材料账：水路件的合规溢价
咖啡机水路件的材料账，要把合规成本当成产品力来算，而不是成本项。
水路核心件（锅炉出水接头、水路三通）用食品级耐水解 PA 改性牌，比工业级贵 30%：单机差价约 8 元。这 8 元的构成：食品级基料溢价、GB 4806 全项迁移测试分摊、年度体系审核分摊。
对价的另一边：水路件是咖啡机的「口感决定件」——析出物直接影响水质和口味，高端用户对此极敏感。行业里「塑料味」差评的杀伤力，前面案例已经见过。
再算市场溢价：全自动咖啡机的零售价差，3000 元档和 1500 元档的核心差异点里，水路材料体系排得进前三——用户未必懂 PPSU 和 PA66 的区别，但「十年水路无垢无味」的宣传能懂。
8 元的合规投入，撬动的是千元级的零售溢价空间，这笔账的杠杆率在家电行业里排前列。咖啡机行业的品牌溢价，一半是萃取系统的技术溢价，另一半就是水路材料的「干净溢价」——后者是改性供应商可以直接参与创造的价值。### 边界声明
| 工况 | 推荐材料 |
|---|
| 高温水管 | 食品级 PA12 |
| 锅炉内衬 | 不锈钢或 PPSU |
| 水泵阀体 | PPS 或食品级 PA66-GF30 |
| 破壁机杯体 | 食品级 PC 或 Tritan |
| 刀组固定座 | PA66-GF30 |
工程备忘
咖啡机件量产前必须做食品接触认证 + 100℃ 热水 + 耐压三项。高温水路走 PA12 或 PPSU，普通 PA66 会水解。
实战案例：常见踩坑与正解
踩坑一：按常温物性表给咖啡机件选料，没考虑长期工作温度。家电件长期在 60-90℃ 下工作，常温强度再高也会热老化失效。正解：拿热老化后的数据选料，PA66 在 80℃ 长期工作要选耐热氧老化牌号。踩坑二：为了降本把增强料换成未增强料，或者把 GF30 降到 GF15。咖啡机件的玻纤含量是算出来的，不是拍出来的。正解：降玻纤含量必须重算蠕变和强度，不能凭经验。踩坑三：噪音和异响问题最后才查，发现是塑料件摩擦或松动。正解：家电的噪音投诉占比很高，塑料件的配合公差和自润滑要在设计阶段就定。
反向案例：豆仓异味的一批退货
2024 年 9 月，华南某品牌咖啡机的电商评价里集中出现一条差评关键词：「咖啡有塑料味」。品控追查了两周，定位在豆仓件——那批豆仓换了便宜的通用 PA 料，料里的润滑助剂析出，咖啡豆在仓里存两天，表面吸附异味。
反馈链路：电商差评聚类、送检确认迁移物超标边缘、那批豆仓全部更换、供应商整改。品牌侧的损失不只是退货——「塑料味」这个标签在电商平台的评价里会长期留存，搜索联想跟着走。
整改后的方案：豆仓走食品级 PP 或 ABS 专用牌，入厂加「异味感官测试」——三个品评员盲测，两人以上察觉异味即判退。
这家厂电商负责人后来在供应链会上讲：「迁移超标是检测仪说了算，异味是消费者的鼻子说了算——后者更严，而且没有国标帮你说话。」
食品接触件的感官问题，是仪器测不全的地带。把人的鼻子写进入厂标准，听上去不科学，实际上是最贵的验厂仪器也比不了的防线。### 延伸判断：两个容易混淆的概念
咖啡机件的选料讨论里，有两个概念常年被混淆。第一个是阻燃和绝缘。
阻燃解决的是不起火，绝缘和耐电痕化解决的是不爬电不击穿，这是两件事。
一个料可以阻燃 V-0 但 CTI 只有 250 V，装在带电件上照样出事。
第二个是强度和韧性。玻纤增强提高强度但降低韧性，增韧提高韧性但降低强度和刚性。
同一个件上，结构部位要强度，卡扣部位要韧性，一般要分成两种料，图省事用一种料的结果，不是卡扣断就是本体裂。
把这三件事写成一张表发给供应商，比打十通电话有用——咖啡机件的选型沟通成本，基本都花在这几项反复确认上。
最后一组问答：三个纠结时刻的裁决
纠结一：中端机型要不要上 PPSU。 按水路位置分级：锅炉直连位和蒸汽位上 PPSU，其余水路段食品级耐水解 PA 改性牌够用——全水路上 PPSU 是成本失控，全不上是口感风险。分级落料让 8 元的合规投入花在刀刃上。
纠结二：客户拿「别家没用食品级也没出事」压价。 别争个案，摆机制：迁移超标是抽检概率问题，没出事是还没抽到。食品接触合规的定位不是「出事的概率低」，是「出事时的免责依据」——合规文件的商业价值在危机时刻才全额兑现。
纠结三：破壁机的杯体连接件能不能降档。 不能：那是「高转速加冲击」交汇的安全位，破壁机行业空杯爆裂的事故记忆还在。安全位的降档省的是小钱，赔的是品类信任——这一族的教训别再交一遍学费。### 补记：三个现场判断信号
信号一：水路接头渗水、密封圈完好。 接头本体吸水尺寸漂，查料的水解数据和吸水率，换耐水解牌，调密封圈只是续命。
信号二：豆仓、水箱异味。 析出物超标的前奏，立即停用换食品级牌，感官测试进入厂标准。
信号三：锅炉区密封件硬化开裂。 耐温档不够或硫化体系不匹配，氟橡胶或硅胶专用牌二选一，普通橡胶在这个位置没有侥幸空间。### 验证顺序：三步走完再下单
第一步，分温区：按热像图把整机的塑料件按温区落位，锅炉区、水路区、常温区三档配置。
第二步，验合规：食品接触位按 GB 4806 全项验，出口机型按目标市场体系加验，感官测试（异味）写进入厂标准。
第三步，验析出：沸水析出加长期浸泡双测，析出数据和水口感联动评估。三步走完，水路件才配得上「入口件」的定位。
结语
前两天接了个电话——选料这件事，越早问越省事。
这类件的选料与试模，可以一起聊。
183 Coffee machine and blender components
Coffee machine operating condition list
Internal coffee machine includes 90-100°C hot water, steam, 9-15 bar pressure, and food contact requirements.
These four components combined mean ordinary engineering plastics are directly eliminated. Coffee machines are among the most demanding categories of home appliances with material requirements and also the highest cost.
Food contact is a hard threshold
All coffee machine components that come into contact with water and coffee must pass food contact certification: domestic GB 4806.7, EU 10/2011, US FDA 21 CFR.
Triple certifications are established simultaneously to be considered compliant. Not all PA66 can pass food grade; you need to choose a certified grade, and non-food-grade additives must not be added during processing.
On-site Replica: Six Temperature Zones of a Coffee Machine
In April 2025, in the laboratory of a coffee machine factory in Ningbo, R&D engineers showed us an infrared thermal image: a fully automatic coffee machine under development, twenty minutes after startup, the temperature of six parts of the machine body spread from 40°C to 120°C in gradients—120°C near the boiler, 95°C at the water connector, 55°C in the bean chamber, and 45°C on the casing.
"One machine has six temperature zones, and plastic parts are loaded according to these zones—this is the biggest challenge in selecting coffee machine materials." When the engineer said this, we underlined this sentence in our notebook.
Cutting materials by temperature zone sounds simple, but it's actually the industry's most common failure: seals near boilers harden and crack after just a few years using ordinary silicone; water pipe joints use general-purpose PA that absorbs water but then drifts to size, seals fail and leak; bean bin parts use materials containing precipitates—coffee oil and precipitate mixed together, which can't be cleaned even after cleaning.
We follow the temperature zone suggestion: boiler zone seals with fluorine-free rubber or silicone special brands; water connectors use hydrolysis-resistant PA special brands (repeated hot water flushing with food contact double thresholds); only then do bean silos and casing parts use general materials to save costs.
This factory's models later received dual industry certifications for energy efficiency and durability. Their experience was: money spent on temperature-zone materials for coffee machines was rewarded by the selling point of "no water line failures for ten years."
Material selection for high-temperature water circuits
Boiler and heating chamber lining: use stainless steel or PPSU. Water pipes and fittings: use food-grade PA12 or PPSU, resistant to 100°C hot water and steam. Water pump and valve body: use PPS or food-grade PA66-GF30. Ordinary PA66 hydrolyzes quickly in 100°C hot water and must be hydrolyzed-resistant or long-chain (PA12).
PPSU Why choose high-end
PPSU (polyphenylsulfone) is resistant to 200°C, hydrolyzable, food-grade, and can be sterilized by steam, making it a high-end material for coffee machines and baby bottles.
The drawbacks are its high price (4-6 times that of PA66) and high processing temperature (360-400°C).
Mid- to low-end coffee machines use a combination of food-grade PP and PA12, and only uses PPSU for key high-temperature components.
Deeper Level: Compliance Accounts for Food Contact
Talking about coffee machines and blenders, we can't avoid the issue of food contact material compliance. Once you calculate this clearly, many price differences become clear.
Food contact materials follow the GB 4806 system domestically, EC 1935/2004 plus LFGB for exports to Europe, and FDA for the US—the test items in these three systems are not exactly the same, but they all focus on three core points: migration (how much from plastic flows into the food), sensory (no odor), and limits on specific substances (monomers, additive residues).
's specific impact on PA systems is as follows: caprolactam residue is a special indicator for PA6, and PA66 cyclic oligomers are also on the monitoring list; Release agents and colorants must be food-grade grades, and general industrial-grade materials are directly excluded; The list for additives like antibacterial agents and lubricating agents is much narrower than for industrial materials.
's cost structure for compliance is: food-grade brands are 15-30% more expensive than industrial brands of the same performance, plus annual migration tests and system audits. This money can't be saved—penalties for food contact violations are batch recalls and removals, and a single incident can wipe out the brand's reputation built over years.
's practical advice for OEMs: Lock the waterway and food contact point material lists to food-grade brands, and filter the supplier directory by 'GB 4806 full report'; Release the non-contact points and use industrial brands to reduce costs. Separate the two lines, and both compliance and cost have their own solutions.
High-Speed Blender Challenge
Blender speed 30,000-50,000 rpm, the blade assembly bearing housing and cup body must withstand high-speed vibrations.
Use food-grade PC or Tritan (copolyester) for the cup body, and do not use PA—PA is opaque and may have odors.
Use PA66-GF30 for knife group mounting bases, which must withstand fatigue and vibration. Noise is the biggest pain point for blenders, so vibration damping is needed structurally.
The boundary between cost reduction and safety
Small appliances face significant cost reduction, but there are three areas where coffee machines cannot be reduced: high-temperature water passages (leaks and burns), pressure chambers (burst risk), and food contact surfaces (risk of precipitation).
These three incidents are safety incidents, not maintenance issues but recall issues. Lowerable parts are casing decorative parts and non-pressure-bearing parts.
Engineering Testing: 4 mandatory tests
Test 1: Hot water resistance. 100°C hot water for 1000 hours, PA12 strength maintained at 92%, ordinary PA66 reduced to 55%—hot water route using PA12.
Test 2: Food contact. Food-grade PA12 passed GB 4806.7 + FDA + EU triple certification—certificate verification required.
Test 3: Pressure resistance. 15 bar pressure chamber, PPS-GF40 passed, PA66-GF30 deformed at 12 bar—high-pressure uses PPS.
Test 4: Blender vibration. At 30,000 rpm, vibration for 100 hours, PA66-GF30 mounting base showed no loosening, and PA66 was not reinforced.
Follow-up Question Three: The three most frequently asked questions when purchasing
First Question: Why is PPSU expensive but still highly sought after? PPSU (polyphenylsulfone) holds a position in coffee machine water parts because of three simultaneous factors: high temperature resistance (180°C steam sterilization without hydrolysis), impact resistance (not brittle), and mature food compliance (baby product product background). The downside is one word: expensive, with a unit price three times that of PA66. High-end machines use PPSU for core water circuit components, mid-range models use hydrolysis-resistant food-grade PA modified brand, entry-level models use PP—all three cost lines have viable options, and material dispensing is based on model positioning.
Question 2: What material requirements are required for high speed of a blender? Blender motor speed above 20,000 rpm, cup body connectors and transmission parts must resist vibration fatigue and impact (ice impact): toughened PA66 and Tritan-type transparent materials for partial discharge, transmission PA and transparent cup body Tritan. Blade group connectors are safety parts; verify under the worst no-load and full-load impact.
Question 3: How to manage steam valve precipitation issues? Repeated steam flushing carries out low molecules from the material, which fall into the water channel as a "white film" beyond scale. The management method is low precipitation plus first-month water quality sampling — precipitation issues are not listed on the physical property list; they must be tested according to the "boiling water precipitation test." Many quotes don't list this item, but high-end models are all checked. ### Calculate the material ledger: compliance premium for water parts
Materials account for water parts in coffee machines. Treat compliance costs as product strength, not cost items
Waterway Core Components (Boiler Outlet Joints, Waterway Tees) use food-grade hydrolysis-resistant PA modified brand, 30% more expensive than industrial-grade: the price difference per unit is about 8 yuan. The 8 yuan is made up of: food-grade base material premium, GB 4806 full migration testing and allocation, annual system audit allocation.
On the Other Side: Water Circuit Components are the "taste determinant" of coffee machines—precipitates directly affect water quality and taste, and high-end users are highly sensitive to this. The impact of "plastic smell" negative reviews in the industry has already been seen in previous cases.
Further Calculate Market Premium: Among the core differences between the 3000 yuan and 1500 yuan range, the waterway material system ranks among the top three—users may not understand the difference between PPSU and PA66, but the "ten years of waterway is pure and tasteless" promotion does.
's 8 yuan compliance investment leveraged a retail premium space in the thousand-yuan range, with a leverage rate among the top in the home appliance industry. The brand premium in the coffee machine industry is half the technical premium for extraction systems, and the other half is the "clean premium" for waterway materials—the latter is the value that modification suppliers can directly participate in. ### Boundary Declaration
| Operating Condition | Recommended Material |
|---|
| High-Temperature Water Pipe | Food-grade PA12 |
| Boiler Lining | Stainless Steel or PPSU |
| Pump Valve Body | PPS or Food-grade PA66-GF30 |
| Blender cup body | food-grade PC or Tritan |
| knife assembly fixed base | PA66 - GF30 |
Engineering memo
Coffee machine must undergo food contact certification + 100°C hot water + pressure resistance before mass production. Using PA12 or PPSU on high-temperature waterways will hydrolyze with ordinary PA66.
Practical Case: Common pitfalls and correct solutions
Pitfall 1: Selecting materials for coffee machines according to room temperature physical property tables without considering long-term operating temperature. Appliances operate long-term at 60-90°C, and no matter how high their strength is, they will still age and fail due to thermal aging. Correct answer: Use data after thermal aging to select materials. For PA66 working long-term at 80°C, choose grades resistant to thermal and oxygen aging. Pitfall 2: To reduce costs, replace reinforcing material with unreinforced material, or reduce GF30 to GF15. The glass fiber content in coffee machines is calculated, not just photographed. Correct answer: Reducing glass fiber content requires recalculating creep and strength, not based on experience. Pitfall 3: Noise and abnormal noises were checked last and found to be plastic parts rubbing or loose. Correct answer: Noise complaints make up a high proportion of home appliances, so the fit tolerances and self-lubrication of plastic parts must be determined during the design phase.
Reverse Case: A batch of returns due to odor in the bean warehouse
In September 2024, a negative review keyword appeared in e-commerce reviews for a coffee machine brand in South China: "coffee has a plastic smell." Quality control traced the issue for two weeks and focused on the bean warehouse — that batch of bean warehouses was replaced with cheap general-purpose PA material, lubricating additives precipitated inside, coffee beans stored in the warehouse for two days, and the surface absorbed odors.
Feedback Chain: Clustering negative reviews from e-commerce, inspection confirming excessive-quality items, all bean warehouses replaced in that batch, supplier rectification. The brand's losses are not limited to returns—the "plastic smell" label remains in e-commerce reviews for a long time, and searching for Lenovo follows suit.
Rectification plan: Doubang uses food-grade PP or ABS special labels, adds "odor sensory testing" upon arrival—three evaluators blindly test, and if two or more notice the odor, the return is awarded.
The e-commerce head of this factory later said at a supply chain meeting: "Excessive migration is determined by the detector, odor is determined by the consumer's nose—the latter is stricter, and there's no national standard to speak for you."
The sensory issues with food contact parts are areas where instruments cannot fully measure them. Writing a person's nose into factory standards sounds unscientific, but in reality, even the most expensive inspection instruments can't match this line of defense. ### Extended Judgment: Two Easily Confused Concepts
In discussions about material selection for coffee machinery, two concepts have been confused for years. The first is flame retardancy and insulation.
Flame retardant solves the problem of no fire, while insulation and anti-electric mark protection solve the problem of no creeping or breakdown. These are two different matters.
One material can be flame-retardant with V-0, but CTI is only 250V, so installing it on live parts can still cause problems.
The second is strength and toughness. Glass fiber reinforcement increases strength but reduces toughness; toughness increases toughness but reduces strength and rigidity.
On the same part, structural parts require strength, while fasteners require toughness. Generally, there are two types of materials, using one material for convenience. Otherwise, the clip breaks or the body cracks.
Write down these three things in a form and send it to suppliers—it's more effective than making ten phone calls—the cost of coffee machine selection and communication is basically spent on repeatedly confirming these points.
The final Q&A: The judgment at three critical moments
Decision One: Should mid-range models use PPSU? Classification by water channel location: PPSU for boiler direct connection and steam stations; for other water sections, food-grade hydrolysis-resistant PA modified cards are sufficient—full water-line PPSU is cost out of control, not using all is taste risk. Grading and scraping make the 8 yuan compliant investment spend where it matters.
Dilemma 2: Customers bargain by saying "Other brands don't use food-grade or have issues." Don't argue about individual cases; set up mechanisms: excessive migration is a random inspection probability issue; if nothing happens, it means you haven't been drawn yet. The positioning of food contact compliance is not "low probability of accidents," but "exemption from liability in case of incidents"—the commercial value of compliance documents is only fully realized in times of crisis.
Dilemma 3: Can the cup body connector of a blender be downshifted? No: That is the safety position where "high speed plus impact" intersect; the memory of empty cup bursts in the blender industry is still vivid. Downshifting the safety position saves small money but damages product trust—don't pay the same lesson for this group again. ### Additional note: Three on-site judgment signals
Signal 1: Water leakage at the water connector, sealing ring intact. Float the water absorption size of the joint body, check the hydrolysis data and absorption rate of the material, replace with hydrolysis resistance brand, and adjust the sealing ring to just keep it alive.
Signal 2: Bean silo and water tank odors. Prelude to excessive precipitate levels; immediately stop using and replace with food-grade labels; sensory testing meets factory standards.
Signal 3: Boiler area seals harden and crack. Insufficient temperature resistance or vulcanization system mismatched; choose between fluororubber or silicone specialty brands; ordinary rubber has no chance in this position. ### Verification sequence: Complete the three steps before placing an order
Step 1, temperature zones: place all plastic parts of the machine according to thermal images according to temperature zones, configuring boiler, water, and room temperature zones.
Step two, compliance inspection: food contact points are fully inspected according to GB 4806, export models are additionally tested according to the target market system, sensory test (odor) is specified as factory standard.
Step three, precipitation test: boiling water precipitation combined with long-term soaking for dual testing, precipitate data is evaluated in conjunction with water taste. After completing these three steps, water passage parts can be worthy of the "entry part" positioning.
Conclusion
A couple of days ago, I got a phone call—the earlier you ask about material selection, the easier it is to ask.
For these types of parts, material selection and mold testing can be discussed together
