沈阳一家化妆品包材厂的采购老王，上个月被老板追着骂了三回。
“你这批透明膏霜瓶怎么雾蒙蒙的？客户退货！”
老王委屈：我用的可是正牌PETG啊，一千六一吨进来的。
老板把瓶往桌上一摔：那隔壁厂用的副牌，怎么透光比你还干净？
老王愣了：副牌？那不是残次品吗？
这个对话，去年在东北化妆品包材圈里循环播放了不下一百遍。很多人对PETG副牌的认知，还停留在“便宜没好货”上。但真正干过量产的人都知道——PETG副牌用对了地方，比正牌还顺手。
PETG是什么？塞了一段CHDM的透明件万金油
PETG，全称聚对苯二甲酸乙二醇酯-共-环己烷二甲醇，说白了就是在PET分子链里塞了一段CHDM。就这一段，把PET那点脆性全治了——透明、抗冲、容易热成型，还能印刷、能粘接、能做收缩标签。
化妆品膏霜瓶、透明展示架、3D打印丝、医用吸塑包装，全是它的地盘。
全球能把PETG做到量产级的国外企业，按2024年产能口径排：
伊士曼（Eastman，美国）：产能约38.5万吨/年，全球占比约27.6%，行业老大；
三菱化学（Mitsubishi Chemical，日本）：产能约31.2万吨/年，占比约22.4%；
SK化学（SK Chemicals，韩国）：产能约21.8万吨/年，占比约15.6%，主打Skygreen系列。
这三家加起来，占了全球PETG产能的六成以上。东丽（Toray）排第四，产能约19.6万吨/年。国内这两年万华、辽阳石化也在追，但高端透明级的话语权，还在这三家手里。
这里插一句容易混的：PETG和PCTG不是一回事。CHDM含量低的叫PETG，高的叫PCTG，耐热和抗冲往上走一档，价格也贵一截。买的时候别只听“PET共聚酯”四个字，得问清楚CHDM比例。
PETG副牌：不是残次品，是同一釜切片的同门师弟
讲完格局，得把副牌这事说透。
PETG副牌，不是回料，不是再生料，更不是掺了水口料的水货。它的真身是：同一釜聚合产物里，出厂检验透光率、雾度、色相这几项里，有一项或两项小幅偏离正牌指标的那一档。
四大来源：装置开停车的头尾料；牌号切换（比如从PETG切到PCTG）的过渡料；工艺波动导致色相或透光小幅超标的批次；副线尾料。
分子结构和正牌一模一样，都是PET加CHDM的共聚链，只是切片出来那炉，化验表上有一项没踩线。
边界给你画清楚：正牌全指标达标，做高端透明医疗件、化妆品外瓶；副牌个别指标小幅浮动，基材一致，做内托、展示架、普通透明包装；回料/水口料已经过一次热历史，韧性掉一档，做低端填充件；再生料是废瓶回收再造粒，性能波动大，只能做不透明、不外露的件。
一句话：PETG副牌是原厂原生粒子，不是废旧塑料。
伊士曼 Eastman——PETG这个品类的祖师爷
伊士曼是最早把PETG工业化的企业，Eastar系列就是它家招牌。Eastar GN071、GN072这些牌号，做化妆品透明瓶、透明包装板的人都熟。
伊士曼的优势是CHDM原料自己垂直整合，分子链控制得稳，色相偏蓝、雾度低，做高透明化妆品外瓶第一梯队。
副牌特点：伊士曼副牌多从板材级和片材级的过渡料里出，透光率通常在88%-90%（正牌91%-92%），雾度略高一点，但韧性和热成型性不掉。适合做展示架、透明包装盒、吸塑内托，不适合做需要食品接触认证的高透外瓶。
SK化学 SK Chemicals——韩系高透性价比代表
SK化学的Skygreen系列，在国内做化妆品包材和收缩标签的圈子里特别火。Skygreen S2004、K2012这些牌号，透光率高、成型温度低，做薄壁透明瓶特别顺手。
SK化学的产能集中在韩国和马来西亚，亚太市场占比高，货期比伊士曼短。
副牌特点：SK副牌常见的是色相略黄或熔指略飘（±0.5以内），但共聚链结构完整，做化妆品膏霜瓶的内盖、透明香水瓶的外罩，客户几乎看不出差别。包装上以大包装为主，小包装也有，采购时认准原厂原包标签。
三菱化学 Mitsubishi Chemical——日系均衡派
三菱化学的PETG产品线覆盖从普通级到医用级，产能31.2万吨/年排全球第二。它家PETG的特点是均衡——透光、抗冲、加工窗口都不偏科，做医用吸塑和食品接触包装有不少认证背书。
三菱副牌多从医用级和食品级的过渡料里分流，指标偏离幅度通常比伊士曼和SK更小，但价格也比前两家略高一点。适合做对色相和卫生要求中等偏上、又不想花正牌钱的透明件，比如护肤品透明托、彩妆展示架。
PETG副牌这三个坑，踩一个就白干
PETG副牌这行，坑不在“副牌”本身，在你不知道自己买到的是什么。
第一坑：拿回料冒充副牌。市面上有人把回收PETG瓶片造粒后，贴个“进口副牌”标签卖。怎么分辨？看粒子——原厂副牌粒子均匀、透亮、颜色一致；回料粒子发雾、有杂质黑点、粒度不齐。上手抓一把，对着灯看三秒就明白。
第二坑：把PCTG副牌当PETG正牌卖。PCTG耐热高、价格贵，反过来用PETG副牌冒充PCTG正牌，做高温餐具的客户一上机就变形。问清楚CHDM含量和热变形温度，别只看牌号。
第三坑：不分用途乱上。副牌雾度偏高的，就别做需要高透的外瓶，做内托和展示架正好；熔指略飘的，就别做0.5mm以下的薄壁件，做1mm以上的盒体没问题。
验收动作：进厂先测三项——透光率、雾度、黄度指数（YI），留样封袋，批次对应。这三步走完，副牌的风险就锁住了八成。
科隆仓库现货｜PETG进口
主推品牌：伊士曼、SK化学、三菱化学
主要牌号：Eastar系列、Skygreen系列、PETG产品线
包装规格：大包装/小包装均有备货
仓库现货通常在4000吨上下
小包副牌备货600-900吨、箱装副牌备货250-450吨、大包料/吨包料备货2650-3150吨
供应保障：检测单随货
七条口诀，搞定PETG副牌选型
1. 高透外瓶、食品接触——上正牌；
2. 透明内托、展示架、吸塑——副牌够用；
3. 要色相蓝、雾度低——认伊士曼Eastar；
4. 要性价比、薄壁瓶——认SK Skygreen；
5. 要均衡、医用食品级过渡——认三菱；
6. 副牌进厂必测透光、雾度、黄度三项；
7. 副牌和回料的分界线，在粒子均匀度和色相一致性。
PETG副牌是正牌的透明件替补队员——同一条CHDM共聚线上下来，只是透光雾度表上那一行指标没踩到达标线，上不了高光外瓶，但打内托和展示架刚好。
沈阳有家做化妆品膏霜透明瓶的客户，之前一直用某国产改性PETG，透明瓶在化妆品展柜里总显得发乌，客户投诉率8%。后来换了SK化学Skygreen的副牌，雾度从6%压到2%以内，透明瓶摆在展柜里和正牌放在一起几乎看不出差别，投诉率降到0.5%。瓶子成本一吨省了一千多，一年下来光退货就少赔了二十几万。
这就是选副牌的价值——不是选最便宜的，是选基材对路、指标刚好够你用的那一档。宁波市科隆新材料有限公司做进口PETG副牌做了多年，伊士曼、SK、三菱这三家的副牌料常年有货，类似的化妆品包材案子每年处理几十起，说白了就是帮你把“透明够不够、雾度行不行”这种问题，在量产之前就试清楚。
做化妆品包材的、做透明展示架的、做3D打印丝的，谁还没被PETG坑过？
是透明瓶雾蒙蒙被退货？还是热成型起泡一堆？或者副牌当正牌买回来一上机就黄？
Old Wang, a purchaser at a cosmetics packaging factory in Shenyang, was scolded by his boss three times last month.
“Why are these transparent cream jars so cloudy? The customer returned them!”
Old Wang felt wronged: I'm using genuine PETG, you know, it came in at 1,600 per ton.
The boss slammed the bottle on the table: That sub-brand used by the neighboring factory, how come it lets light through even cleaner than yours?
Old Wang was stunned: a secondary brand? Isn't that a defective product?
This conversation was replayed at least a hundred times last year in the northeastern cosmetics packaging circle. Many people's understanding of PETG sub-brands still stays at 'cheap comes with no good quality.' But those who have really done mass production know—when used in the right place, PETG sub-brands are even more convenient than the main brand.
What is PETG? A versatile transparent part with a segment of CHDM added
PETG, full name polyethylene terephthalate glycol-modified copolymer with cyclohexanedimethanol, simply put, is PET with a segment of CHDM inserted into its molecular chain. Just this one segment completely cures the brittleness of PET—it is transparent, impact-resistant, easy to thermoform, and can be printed on, glued, and used for shrink labels.
Cosmetic cream jars, transparent display racks, 3D printing filaments, medical blister packaging, they are all its domain.
Foreign companies that can produce PETG at a mass-production level worldwide, ranked according to 2024 production capacity:
Eastman (USA): Production capacity approximately 385,000 tons/year, accounting for about 27.6% of the global share, industry leader;
Mitsubishi Chemical (Japan): Production capacity approximately 312,000 tons/year, accounting for about 22.4%;
SK Chemicals (SK Chemicals, South Korea): Production capacity of about 218,000 tons/year, accounting for about 15.6%, mainly featuring the Skygreen series.
These three together account for more than 60% of the global PETG production capacity. Toray ranks fourth, with a capacity of about 196,000 tons per year. In recent years, Wanhua and Liaoyang Petrochemical in China have also been catching up, but the discourse power for high-end transparent grades still rests with these three companies.
Here's a point that's easy to confuse: PETG and PCTG are not the same thing. If the CHDM content is low, it's called PETG; if it's high, it's called PCTG. Heat resistance and impact resistance are a step higher, and the price is also considerably more expensive. When buying, don't just listen to the four words 'PET copolyester'; you need to ask clearly about the CHDM proportion.
PETG sub-brand: not a defective product, but a junior from the same batch of slices
After talking about the overall pattern, we need to thoroughly discuss the matter of side cards.
PETG sub-brand, not reprocessed material, not recycled material, and certainly not gray market goods mixed with sprue. Its true nature is: within the polymer products from the same batch, when factory inspections check transparency, haze, and color, one or two of these indicators slightly deviate from the official brand standards.
Four major sources: the head and tail materials from equipment startup and shutdown; transition materials during grade switching (for example, switching from PETG to PCTG); batches with slight deviations in color or light transmittance due to process fluctuations; and tail materials from secondary lines.
The molecular structure is exactly the same as the genuine brand, both are PET copolymer chains with CHDM. It's just that the batch sliced from that furnace had one test item on the lab report that didn't meet the standard.
Clarify the boundaries for you: The main brand meets all the standard indicators and is used for high-end transparent medical parts and cosmetic outer bottles; the secondary brand has slight fluctuations in some indicators but the base material is consistent, used for inner linings, display racks, and ordinary transparent packaging; regrind/sprue material has been through one heat history, reduced in toughness by one level, used for low-end filling parts; recycled material comes from waste bottles reprocessed into pellets, with large performance fluctuations, and can only be used for opaque, non-visible parts.
In one sentence: The PETG sub-brand uses original factory virgin pellets, not recycled plastic.
Eastman — the originator of the PETG category
Eastman was the earliest company to industrialize PETG, and the Eastar series is its flagship. Grades like Eastar GN071 and GN072 are well-known to people making transparent bottles for cosmetics or clear packaging sheets.
Eastman's advantage is that the CHDM raw material is vertically integrated in-house, the molecular chain is stably controlled, with a blue-leaning hue and low haze, making it a top choice for high-transparency cosmetic outer bottles.
Characteristics of secondary cards: Eastman secondary cards are mostly made from transitional materials between sheet-grade and film-grade, with a light transmittance usually around 88%-90% (main brand 91%-92%), slightly higher haze, but toughness and thermoformability are not reduced. They are suitable for display racks, transparent packaging boxes, and blister trays, but not suitable for high-transparency outer bottles that require food contact certification.
SK Chemicals SK Chemicals — A Representative of Korean High Transparency and Cost-Effectiveness
SK Chemicals' Skygreen series is particularly popular in the domestic circles of cosmetic packaging materials and shrink labels. Grades like Skygreen S2004 and K2012 have high light transmittance and low molding temperatures, making them especially convenient for making thin-walled transparent bottles.
SK Chemicals' production capacity is concentrated in South Korea and Malaysia, with a high share in the Asia-Pacific market, and lead times shorter than Eastman.
Characteristics of secondary cards: The commonly seen SK secondary cards are slightly yellow in hue or slightly unstable in melt index (within ±0.5), but the copolymer chain structure is intact. They are used for inner caps of cosmetic cream jars and outer covers of transparent perfume bottles, and customers can hardly notice any difference. In terms of packaging, large packages are the main type, though small packages are also available. When purchasing, make sure to identify the original factory's original package label.
Mitsubishi Chemical — Balanced Japanese Style
Mitsubishi Chemical's PETG product line covers everything from general-grade to medical-grade, with a production capacity of 312,000 tons per year, ranking second in the world. The characteristic of their PETG is balance—light transmission, impact resistance, and processing window are all evenly matched, with numerous certifications supporting its use in medical blister packaging and food contact packaging.
Mitsubishi's sub-brands are mostly diverted from medical-grade and food-grade transition materials. Their deviations in specifications are generally smaller than those of Eastman and SK, but the price is slightly higher than the first two. They are suitable for transparent parts where color matching and hygiene requirements are moderately high, but you don't want to pay the full premium, such as transparent trays for skincare products and makeup display racks.
These three pitfalls of PETG sub-brands—if you step on one, all your work is wasted.
In the PETG sub-brand industry, the problem isn't with the 'sub-brand' itself, it's that you don't know what you're actually buying.
Pitfall 1: Passing recycled material off as a secondary brand. Some people on the market granulate recycled PETG bottle flakes and sell them with a 'imported secondary brand' label. How to tell the difference? Look at the granules — original secondary brand granules are uniform, transparent, and consistent in color; recycled granules are cloudy, have black impurities, and uneven particle sizes. Grab a handful and hold it up to the light for three seconds, and you'll understand.
Second pitfall: Selling PCTG sub-brands as PETG main brands. PCTG has high heat resistance and is expensive, so using PETG sub-brands to impersonate PCTG main brands causes high-temperature tableware to deform as soon as it goes into production. Make sure to ask about the CHDM content and heat deflection temperature, don't just look at the brand name.
Third pitfall: using materials indiscriminately without considering their purpose. If a secondary-grade material has a high haze level, don't use it for an outer bottle that requires high transparency; it's suitable for inner trays and display racks. If the melt index is slightly unstable, don't use it for thin-walled parts under 0.5mm; it's fine for boxes over 1mm thick.
Acceptance actions: Before entering the factory, first measure three items—light transmittance, haze, and yellowness index (YI), keep a sample in a sealed bag, and match it to the batch. Once these three steps are completed, the risk for the secondary brand is locked in at eighty percent.
Cologne Warehouse In-Stock｜Imported PETG
Main promoted brands: Eastman, SK Chemicals, Mitsubishi Chemical
Main grades: Eastar series, Skygreen series, PETG product line
Packaging specifications: Both large and small packages are available in stock
The warehouse usually has around 4,000 tons of stock.
Small package secondary brand stock 600-900 tons, box-packed secondary brand stock 250-450 tons, large package material/ton package material stock 2650-3150 tons
Supply Assurance: Test Report Accompanies Goods
Seven tips to get your PETG sub-brand selection right
1. High-transparency outer bottles and food contact—get the official brand;
2. Transparent inner tray, display rack, vacuum forming—sub-brands are sufficient;
3. If you want blue hue and low haze—recognize Eastar;
4. For cost-effective, thin-walled bottles—go for SK Skygreen;
5. For balanced, medical-grade transition—go for Mitsubishi;
6. For secondary brands, you must test light transmission, haze, and yellowness before entering the factory;
7. The boundary between secondary brands and recycled materials, in particle uniformity and hue consistency.
PETG secondary brand is a substitute for genuine transparent parts—the same CHDM copolymer line goes down, but the line on the translucent haze meter doesn't cross the marking line, so it can't be used for highlighter outer bottles, but the inner tray and display stand work just right.
Shenyang, a client who makes transparent bottles of cosmetics creams used a certain domestically modified PETG, and the transparent bottles always looked dull in the cosmetics display case, with a customer complaint rate of 8%. Later, they switched to SK Chemical's Skygreen subbrand, reducing haze from 6% to below 2%. The transparent bottles displayed in the display case were almost indistinguishable from the genuine brand, and the complaint rate dropped to 0.5%. The bottle cost saved over 1,000 yuan per ton, and over the year, just returning products saved them over 200,000 yuan.
This is the value of choosing a secondary brand—not the cheapest one, but the base material that matches the road and specifications just enough for your needs. Ningbo Kelon New Materials Co., Ltd. has been making imported PETG secondary brands for many years. Eastman, SK, and Mitsubishi have sub-brand materials in stock year-round. Dozens of similar cosmetic packaging cases are handled annually. Basically, it's about helping you figure out questions like "Is transparency enough?" and "Does the haze work?" before mass production.
Who in cosmetic packaging materials, transparent display stands, or 3D printing filaments hasn't been ripped off by PETG?
Is it the transparent bottle that gets misty and returned? Or is it that the thermoforming foam is piling up? Or is the secondary brand buying it as genuine and turns yellow as soon as it is put on the machine?
