每年旺季前，做塑胶玩具、做公仔的厂就要开始紧张：一批新到的TPR料上机，表面先是起油花，接着颜色发黄，末了公仔一掰就裂——整柜料当场停线。
做TPR的都懂，这料就是SBS基的热塑性橡胶，软乎乎、可注塑、能回收，做公仔、做握把、做密封圈全靠它。可越是量大面广的料，副牌的水越深。
玩具圈的软胶主力
TPR这名字在行业里有点乱，在玩具和日用品语境下，它指的就是苯乙烯类热塑性弹性体，底子是SBS（苯乙烯-丁二烯-苯乙烯嵌段共聚物），配上油和填料混出来。注塑级、可回收、软硬度可调，是做软胶公仔和包胶件的主力。
全球SBS基TPR的国外大厂，按市占排：美国科腾（Kraton，约一成八份额，Kraton D系列）、台湾台橡（TSRC，TAIPOL/Vector）、台湾李长荣（LCY，Diene系列，个位数份额）。旭化成、LG化学、西班牙Dynasol跟在后面。（口径：市占，行业报告）
为什么玩具圈认准SBS基TPR？它能像塑料一样注塑成型，又能像橡胶那样软，还能反复回收加热，做出来的公仔软硬可调、摔不碎、不伤手。配上不同比例的环烷油和滑石粉，从邵氏20度的超软公仔到邵氏80度的硬握把都能调出来，这是别的弹性体给不了的灵活度。
副牌把软硬回弹两头兜住
TPR副牌是什么？SBS副牌是原厂同批嵌段共聚物里，苯乙烯含量或门尼粘度在出厂检验时小幅越线的那一档。TPR因为是混配料，副牌回来还要配油配填料，所以TPR副牌的坑，一半在基料SBS，一半在混配。
对比着看：正牌TPR贵到公仔报价不敢松手，回料TPR吹起毛边又掉粉，大厂副牌刚好卡在玩具厂要的软硬度和回弹那条缝里。说白了，副牌是原厂原生SBS粒子，门尼或苯乙烯飘一点；回料是你公仔水口料再造粒，已经吃过一次热历史；再生料是废塑料回来的，硬度和韧性都没个准数。
科腾D系列：回弹干爽的高端料
美国科腾是SBS化学的开创者，Kraton D系列是它的通用SBS招牌。它家TPR基料在高端玩具和医用件里用得多。科腾副牌苯乙烯含量漂移可控，做要求回弹和表面干爽的公仔，顶正牌比较稳。
台橡TAIPOL：量大面广的台系主力
台湾台橡（TSRC）是亚洲SBS大户，TAIPOL和Vector两个商标，做胶粘剂和塑料改性。台橡副牌量大、牌号全，适合做量大面广的玩具公仔和日用品。它家副牌门尼波动区间适中，注塑厂配方微调就能接上。
台橡的另一层好处是亚洲供货近，柜期短、补货快，对玩具厂这种按旺季排产的客户来说，供货稳定本身就是成本。它家副牌的标签体系也清楚，基料牌号、充油比例标得明白，省得采购自己去猜。
李长荣Diene：不挑外观件的性价比
台湾李长荣（LCY），Diene系列SBS在鞋材和玩具圈口碑稳。李长荣副牌性价比突出，做普通公仔、包胶牙刷柄、密封圈这类不挑外观的件，用量大、容错高。要注意李长荣副牌的充油比例，换料时油要重新算。
三个坑，都在手感上
TPR副牌三个坑。头一个是充油比例。TPR软不软全看充油多少，副牌含油量一变，邵氏硬度和表面发粘全跟着变，做公仔手感就不对。
再一个是表面起霜起油。副牌配油不当，公仔放俩礼拜表面渗油发黄，这是玩具厂头疼的事。还有一个是掉粉掉屑。回料冒充副牌做的TPR，注塑完一搓就掉粉，过不了玩具厂的外观检验。
玩具件还有一条隐性红线：过不过邻苯二甲酸酯和重金属的环保检测。副牌基料本身是原生SBS，问题不大；但有些渠道为了压成本，在配油和填料上动了手脚，出件一测邻苯超标，整柜货直接退运。所以做出口玩具的厂，副牌进厂一定要带环保检测报告。
科隆仓库现货｜TPR线上
主推品牌：美国科腾Kraton、台湾台橡TSRC、台湾李长荣LCY
主要牌号：Kraton D系列、TAIPOL、Diene
包装规格：原厂原包，分大包装与小包装两种；小包副牌、箱装副牌、大包料/吨包料分档码放，按批量备货
仓库现货：TPR副牌仓库现货5000吨左右
现货明细：小包副牌备货800-1000吨、箱装副牌备货300-500吨、大包料/吨包料备货3500-3900吨
供应保障：先测后签，进厂先把关键指标测一遍，对上用途再签合同
记五条，再上注塑机
1. 先卡邵氏硬度和充油量，手感不对全白搭。
2. 表面干爽度要过，公仔不能放俩礼拜就起油。
3. 过不了掉粉测试的，八成是回料冒充。
4. 换基料重新算油比，别照上一版配方套。
5. 外观件守正牌，内部包胶件再上副牌。
黄冈有家做软胶公仔和包胶玩具的客户，之前全用台橡正牌SBS基TPR，料成本压不下来。后来在包胶牙刷柄和内部软胶件里掺了两成李长荣副牌，充油比例重新算过后，邵氏硬度跟正牌配方差不到一度，表面干爽度过了放两周不起油的测试，一吨料成本省下来五百多块，一年光这一项省出二十来万。这就是TPR副牌的用法——看得见的外观件守正牌，看不见的内件用副牌把成本拉下来。宁波市科隆新材料有限公司做进口SBS基TPR副牌多年，充油比、硬度、表面起霜进厂前先帮你过一遍。
Every year before the peak season, factories that make plastic toys and figurines start to get nervous: a batch of newly arrived TPR material goes on the machine, the surface first shows oil spots, then the color turns yellow, and finally the figurine breaks with a single twist — the entire batch is immediately stopped on the line.
Anyone who works with TPR knows, this material is SBS-based thermoplastic rubber, soft, moldable, and recyclable. It's relied on for making dolls, handles, and seals. The larger and more extensive the volume of the material, the more complicated the counterfeit brands.
The main force of soft rubber in the toy circle
The name TPR is a bit confusing in the industry. In the context of toys and daily necessities, it refers to styrene-based thermoplastic elastomers, fundamentally SBS (styrene-butadiene-styrene block copolymer), mixed with oil and fillers. Injection-molding grade, recyclable, with adjustable hardness, it is the main material for making soft rubber toys and overmolded parts.
The major overseas manufacturers of SBS-based TPR globally, ranked by market share, are: Kraton in the United States (approximately 18% share, Kraton D series), TSRC in Taiwan (TAIPOL/Vector), and LCY in Taiwan (Diene series, single-digit share). Asahi Kasei, LG Chem, and Dynasol in Spain follow. (Caliber: market share, industry report)
Why does the toy industry favor SBS-based TPR? It can be injection molded like plastic, yet soft like rubber, and it can be repeatedly recycled and reheated. The resulting figurines have adjustable softness, are shatterproof, and safe to handle. By mixing different proportions of naphthenic oil and talc, you can adjust it from ultra-soft figurines with a Shore hardness of 20 to hard handles with a Shore hardness of 80, a flexibility that other elastomers cannot provide.
The auxiliary card covers both ends of soft and hard rebound.
What is a TPR off-grade? An SBS off-grade refers to a batch of original factory block copolymer where the styrene content or Mooney viscosity slightly exceeds the specification during factory inspection. Since TPR is a compounded material, when the off-grade comes back, it still needs to be mixed with oil and fillers, so the issues of TPR off-grade are half due to the SBS base material and half due to the compounding.
Compare them side by side: the official TPR is so expensive that the toy's price can't be reduced; recycled TPR frays and loses powder; the big factory's secondary brand just fits the softness and rebound that the toy factory needs. To be clear, the secondary brand uses the original factory's native SBS particles, with a little Meni or styrene floating; recycled material is your toy's sprue material regranulated, already having gone through one heat history; regenerated material comes from waste plastic, with unpredictable hardness and toughness.
Korten D Series: High-end material with resilient dryness
Kraton in the United States is the pioneer of SBS chemicals, and the Kraton D series is its general-purpose SBS flagship. Its TPR base material is widely used in high-end toys and medical parts. Kraton's sub-brand has controllable styrene content drift, suitable for making plush toys that require rebound and a dry surface, while the top flagship brand is relatively stable.
Taiwan Rubber TAIPOL: A major Taiwan-based player with large volume and wide coverage
Taiwan Synthetic Rubber Corporation (TSRC) is a major SBS supplier in Asia, with the brands TAIPOL and Vector, producing adhesives and plastic modifiers. TSRC's secondary brand has a large volume and a complete range of grades, suitable for producing widely distributed toys and daily necessities. The Mooney viscosity range of its secondary brand is moderate, allowing injection molding factories to adjust formulas slightly to match.
Another advantage of Taiwan Rubber is that its supply in Asia is nearby, with short lead times and fast replenishment. For toy manufacturers who schedule production according to peak seasons, stable supply itself is a cost. Their sub-brand labeling system is also clear, with base material grades and oil filling ratios clearly marked, saving buyers from having to guess.
Li Changrong Diene: Cost-effective without picky exterior parts
Taiwan LCY (Li Changrong), the Diene series SBS has a solid reputation in the footwear and toy circles. LCY's sub-brand has outstanding cost performance and is used for ordinary figurines, coated toothbrush handles, and sealing rings—items that are not particular about appearance, have high usage, and are tolerant of mistakes. Attention should be paid to the oil filling ratio of LCY's sub-brand, and when changing materials, the oil must be recalculated.
Three drawbacks, all in the feel
There are three pitfalls with TPR sub-brands. The first one is the oil filling ratio. Whether TPR is soft or not entirely depends on how much oil is added. Once the oil content of a sub-brand changes, the Shore hardness and surface stickiness will change accordingly, and the feel when making figurines will be off.
Another issue is surface frosting and oiling. If the secondary brand is improperly matched with oil, after placing the doll for two weeks, the surface will exude oil and turn yellow, which is a headache for toy factories. Another problem is powder and flake shedding. Using recycled material disguised as a secondary brand to make TPR, after injection molding, it will shed powder when rubbed and cannot pass the appearance inspection of toy factories.
There is also an implicit red line for toy parts: whether they pass environmental tests for phthalates and heavy metals. The secondary brand's base material is virgin SBS, so there is not much problem; however, some channels, in order to cut costs, tamper with oils and fillers, and testing the parts shows excessive phthalates, resulting in the entire container shipment being returned. Therefore, manufacturers producing export toys must ensure that secondary brand materials entering the factory come with environmental test reports.
Cologne warehouse spot｜TPR online
Main promoted brands: Kraton (USA), TSRC (Taiwan), LCY (Taiwan)
Main grades: Kraton D series, TAIPOL, Diene
Packaging specifications: Original factory packaging, available in large and small packs; small packs are sub-branded, boxed sub-branded, large pack materials/ton bags are graded and stacked, stocked according to batch quantity.
Warehouse stock: Around 5,000 tons of TPR sub-brand warehouse stock
Spot details: Small package secondary brand stock 800-1000 tons, box-packed secondary brand stock 300-500 tons, large package material/ton package material stock 3500-3900 tons
Supply Assurance: Test first, sign later. Before entering the factory, measure the key indicators once, and only sign the contract if they meet the intended use.
Mark five lines, then go to the injection molding machine
1. First set the Shore hardness and oil filling; if the feel isn't right, everything is useless.
2. The surface dryness must pass; the doll should not become greasy after just two weeks.
3. Those who can't pass the unfollow test are most likely counterfeit returns.
4. Recalculate the oil ratio with the new base material; don't just follow the previous formula.
5. The exterior parts carry the original brand, and the internal molded parts carry an additional brand.
There is a client in Huanggang that makes soft rubber figurines and overmolded toys. Previously, they used only genuine Taiwan SBS-based TPR, and the material cost couldn’t be reduced. Later, they mixed 20% of Lee Chang Rong’s secondary brand into the overmolded toothbrush handles and internal soft rubber parts. After recalculating the oil content ratio, the Shore hardness differed from the genuine formulation by less than one degree. The surface dryness passed the two-week no-oil test. The cost per ton of material was reduced by more than 500 yuan, saving around 200,000 yuan a year just from this item. This is the use of secondary TPR brands—use genuine brands for visible exterior parts and secondary brands for invisible internal parts to reduce costs. Ningbo Kolon New Material Co., Ltd. has been producing imported SBS-based secondary TPR brands for many years, and they can pre-check oil content ratio, hardness, and surface frosting before the material enters the factory.
