做五层共挤复合膜的老板，经常以为自己下单买的是“粘合层树脂”，其实买的是一手运气。同样是接枝改性聚烯烃，袋子上都印着adhesive resin，买回来一烘，跟阻气层接不上口，熟化三天整卷膜从中间劈开，胶层干干净净脱层。这种事每年都在复合膜车间上演。
问题不在你运气差，在你根本没搞懂：你以为ADPOLY是个杂牌，其实它背后站着韩国乐天化学；你以为粘胶树脂随便换，其实它跟基材配对错一个，整卷膜就废。
ADPOLY不是大品类，是给两种材料“做媒”的料
ADPOLY不是塑料大品类，是韩国乐天化学(Lotte Chemical)手里一块牌子，学名是接枝改性聚烯烃粘胶树脂——通过在聚烯烃分子链上接枝极性基团，让本来“老死不相往来”的两种料热压到一起时能咬死。它用在哪？五层共挤复合膜里那层粘合层、铝塑复合管、食品包装的阻隔层粘合、以及增容。说白了，它本身不做产品，它是给两种不同材料“做媒”的料。
全球做这门生意、把改性聚烯烃粘合树脂做成规模的国外企业，前三张名单很清楚：韩国乐天化学的ADPOLY系列、日本三井化学(Mitsui Chemicals)的ADMER系列、日本三菱化学(Mitsubishi Chemical)的MODIC系列。这三家基本就是工业级聚烯烃粘合树脂的第一梯队，牌号体系、共挤出工艺配套成熟。后面还有北欧化工(Borealis)的Borflow等跟进，但流通量和认证积累上差半档。这是按产能与行业流通份额排的梯队口径。
ADPOLY副牌，不是掺回收料的便宜货
ADPOLY副牌，本质跟所有原厂副牌一个逻辑：乐天化学同一牌号、同一套接枝聚合装置出来的原生粒子，分子链上接的极性基团数量、熔指、粘合力，在出厂检验时个别指标小幅偏出内控线，就走副牌。它不是掺了回收料的便宜货，也不是降级配方。
四大来源还是那四个：开停车头尾料、切牌号过渡料、工艺波动致个别指标飘移的批次、副线尾料。跟回料的边界更要说透：回料是你厂里把复合膜边角料重新造粒，胶层和基材混在一起，极性基团分布早乱了，再用来做粘合层，粘合力根本没法控；再生料更不用说，波动大。副牌是原厂第一次聚合的干净粒子，批次可追溯。包装上分大包装和小包装，原厂原包。
乐天化学ADPOLY：PP基PE基两条线，基料对不上就分层
主角乐天化学。ADPOLY是它用自主技术开发的粘胶树脂，PP基和PE基都有，BP系列、CM系列这些牌号流通很广。PP基的BP-402这类，做食品和工业薄膜、铝复合管用得多。
它的副牌特点是熔指浮动通常不大，做一般复合膜粘合层够用。坑在哪？ADPOLY有PP基和PE基两条线，基料跟你的基材对不上，粘得再牢也会分层——拿PP基去粘PE基的膜，就是白忙。
三井ADMER：牌子老，食品接触和耐油认证厚
第二家三井化学的ADMER，这是全球最早把聚烯烃粘合树脂做出来、并且做了几十年的牌子。ADMER跟PP、PE、EVOH、PA、PET甚至金属都能配，是复合膜和汽车油路里的常客。
它的副牌料认证积累深，食品接触、耐油这些指标稳。三井的脾气是牌号分得细，粘接强度跟你的阻气层材料要配对——做EVOH阻隔膜就配EVOH专用那档，别拿通用档硬上。
三菱MODIC：tie层加可剥离密封，价格带宽
第三家三菱化学的MODIC。MODIC走的是tie层加可剥离密封两条技术路线，共挤出配PP、配PVC、配PA都有成熟方案。它的副牌在工业管材、包装板这些对成本敏感的活里流通不少。
三菱跟三井的差别是：三井牌子老、认证全，三菱牌号更新快、价格带更宽。三家选副牌，先定你要粘的是什么基材、走的是PP线还是PE线，再谈牌号。
ADPOLY这类副牌，三个坑最坑人
一是基料对错：PP基和PE基不分，上机就分层。二是熔指跟挤出线不匹配，接枝料对熔指敏感，差一点粘度就对不上，胶层厚薄不均。三是耐温耐化学不匹配：做高温蒸煮膜的，粘合层必须扛得住一百二十一度蒸煮，拿常温通用档去试，一蒸煮就脱层。
另外多批次混料前必须留样做剥离强度测试，复合膜的剥离强度就是整张膜的底。把大包装小包装分好，小批量试机别上大包。
科隆仓库现货｜ADPOLY微信
主推品牌：韩国乐天化学、日本三井化学、日本三菱化学
主要牌号：ADPOLY（BP/CM系列）、ADMER、MODIC
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：ADPOLY副牌仓库现货通常在2000-5000吨
现货明细：小包副牌备货300-600吨、箱装副牌备货150-300吨、大包料/吨包料备货1500-4100吨
供应保障：批次留样可溯，每批进厂留底留样，批次台账可查
ADPOLY副牌选料口诀
一看基料对基材，PP基配PP、PE基配PE；二对阻气层，EVOH、PA、PET各配各的档；三测熔指对上挤出线；四做蒸煮验证，高温膜先过一百二十一度那关；五留样测剥离，多批混料前留底。
岳阳有家做食品蒸煮复合膜的客户，之前一直用正牌ADPOLY，粘合层占了膜成本的近两成，资金压得紧。后来换同牌号副牌，剥离强度跟正牌对在一个区间，一百二十一度蒸煮半小时不脱层，粘合层成本下来一截，膜厂的综合良率稳在九成三。
这就是粘胶树脂选副牌的价值——粘接强度够、耐温够，就是够，不用为用不上的指标付钱。ADPOLY粘胶树脂买错基料，五层复合膜熟化三天就分层，整卷袋子从中间撕到底；买对基料，剥离强度和耐蒸煮跟正牌站在一条线上，上机后连续生产不返工。宁波市科隆新材料有限公司做进口聚烯烃粘合树脂副牌多年，ADPOLY、ADMER、MODIC都有稳定渠道，复合膜粘合层选料的案子每年处理不少。
The boss who makes five-layer co-extruded composite films often thinks that when he places an order, he's buying 'adhesive resin,' but actually he's buying a handful of luck. Even though it's the same graft-modified polyolefin and the bags are all labeled 'adhesive resin,' after baking it, it won't bond with the barrier layer. After curing for three days, the entire roll of film splits down the middle, and the adhesive layer peels off completely. This kind of thing happens every year in composite film workshops.
The problem is not that you're unlucky, it's that you simply haven't understood: you think ADPOLY is a generic brand, but actually it's backed by Lotte Chemical of Korea; you think adhesive resin can be swapped casually, but actually if it mismatches with the substrate, the whole roll of film is ruined.
ADPOLY is not a major category; it is a material that 'mediates' between two types of materials.
ADPOLY is not a major category of plastic; it is a brand owned by South Korea's Lotte Chemical. Its technical name is graft-modified polyolefin adhesive resin — by grafting polar groups onto the polyolefin molecular chain, it allows two materials that would normally 'never mix' to bond tightly when heat-pressed together. Where is it used? In the adhesive layer of five-layer coextruded films, aluminum-plastic composite pipes, barrier layer adhesion in food packaging, and for capacity enhancement. Simply put, it doesn’t make products itself; it acts as a 'matchmaker' for two different materials.
Globally, the foreign companies that are in this business and have scaled up the production of modified polyolefin adhesive resins are clear in the top three: ADPOLY series from Lotte Chemical in South Korea, ADMER series from Mitsui Chemicals in Japan, and MODIC series from Mitsubishi Chemical in Japan. These three basically form the first tier of industrial-grade polyolefin adhesive resins, with mature grade systems and co-extrusion process support. Following them are others like Borflow from Borealis in Northern Europe, but they lag behind in terms of circulation volume and certification accumulation. This ranking is based on production capacity and industry market share.
ADPOLY sub-brand, not cheap goods mixed with recycled materials
ADPOLY sub-brand essentially follows the same logic as all original factory sub-brands: the native particles produced by Lotte Chemical under the same grade and the same set of graft polymerization equipment, with the number of polar groups attached to the molecular chains, melt index, and adhesion, if individual indicators slightly deviate from the internal control line during factory inspection, are designated as the sub-brand. It is not cheap material mixed with recycled material, nor a downgraded formula.
The four main sources are still the same four: scrap from the start and end of production, transitional material when changing grades, batches with occasional indicator fluctuations due to process variations, and leftover material from secondary lines. We need to be even clearer about the boundary with regrind: regrind is when your factory takes scraps of composite film and re-pelletizes them, so the adhesive layer and substrate are mixed together, the distribution of polar groups is already messed up, and using it for the adhesive layer makes it impossible to control adhesion; recycled material is even more volatile. Off-spec material from other grades consists of clean pellets from the original manufacturer's first polymerization, and the batch is traceable. Regarding packaging, there are bulk and small packages, all in the original manufacturer's original packaging.
Lotte Chemical ADPOLY: Two lines, PP-based and PE-based, if the base materials don't match, they will separate.
The main character is Rakuten Chemical. ADPOLY is a tacky resin developed using its own technology, available in both PP-based and PE-based types. The BP series and CM series are widely circulated. PP-based types like BP-402 are often used for food and industrial films, as well as aluminum composite tubes.
Its secondary film characteristic is that the finger flotation is usually not large, which is sufficient for making general composite film adhesive layers. Where's the problem? ADPOLY has two lines, PP-based and PE-based. If the base material doesn't match your substrate, even if the adhesion is strong, it will delaminate—using a PP-based film to bond a PE-based film is just wasted effort.
Mitsui ADMER: long-established brand, certified for food contact and oil resistance
The second is Mitsui Chemicals' ADMER, which is the world's earliest brand to produce polyolefin adhesive resins and has been in the market for decades. ADMER can be combined with PP, PE, EVOH, PA, PET, and even metals, and is commonly used in composite films and automotive fuel lines.
Its secondary brand material has a deep certification track record, and indicators like food contact and oil resistance are stable. Mitsui's approach is to classify grades very specifically, so the adhesive strength needs to match your barrier layer material—if you’re making an EVOH barrier film, use the grade dedicated to EVOH, don’t force a general-purpose grade.
Mitsubishi MODIC: tie layer with peelable seal, price range
The third is Mitsubishi Chemical’s MODIC. MODIC follows two technological routes: tie layer plus peelable seal. There are mature solutions for co-extrusion with PP, PVC, and PA. Its sub-brand circulates quite a bit in cost-sensitive applications such as industrial piping and packaging boards.
The difference between Mitsubishi and Mitsui is: Mitsui has an older brand and complete certifications, while Mitsubishi updates its grades faster and has a wider price range. When choosing a secondary brand from the three, first determine the substrate you want to bond and whether you are using PP wire or PE wire, and then discuss the grade.
Sub-brands like ADPOLY, three pitfalls are the most frustrating
First is the base material issue: PP-based and PE-based are not distinguished, and delamination occurs once put on the machine. Second, the melt index does not match the extrusion line; grafted materials are sensitive to the melt index, and even a slight mismatch in viscosity causes uneven adhesive layer thickness. Third, temperature and chemical resistance do not match: for making high-temperature sterilization films, the adhesive layer must withstand 121 degrees of sterilization; if tested with a normal room-temperature general grade, delamination occurs during sterilization.
In addition, before mixing multiple batches, a sample must be taken for peel strength testing. The peel strength of the composite film is the basis of the entire film. Separate large and small packages properly, and do not put large packages on when testing small batches.
Cologne Warehouse Spot｜ADPOLY WeChat
Main recommended brands: Lotte Chemical (South Korea), Mitsui Chemicals (Japan), Mitsubishi Chemical (Japan)
Main Grades: ADPOLY (BP/CM Series), ADMER, MODIC
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 Spot: ADPOLY sub-brand warehouse spot usually ranges from 2,000 to 5,000 tons
Spot details: Small package secondary brand stock 300-600 tons, boxed secondary brand stock 150-300 tons, large package/material per ton stock 1500-4100 tons
Supply Assurance: Batch samples can be traced; each batch entering the factory has retained samples and records, and batch ledgers are available for inspection.
ADPOLY Sub-Brand Material Selection Mnemonic
First, match the base material with the substrate: PP base with PP, PE base with PE; second, match the barrier layer: EVOH, PA, PET each with their corresponding grade; third, check the melt index with the extrusion line; fourth, perform a cooking test, high-temperature films must first pass the 121-degree test; fifth, keep samples for peel testing, retain a portion before mixing multiple batches.
There is a client in Yueyang who makes food steam-cooked composite films. They had been using the branded ADPOLY, but the adhesive layer accounted for nearly 20% of the film cost, which put a strain on their finances. Later, they switched to an unbranded version of the same grade; the peel strength remained in the same range as the branded one, and steaming at 121 degrees for half an hour did not cause delamination. The cost of the adhesive layer was reduced, and the overall yield of the film factory remained stable at 93%.
This is the value of choosing a secondary brand for adhesive resin—sufficient bonding strength, sufficient temperature resistance, that's all you need, no need to pay for specifications you won't use. If you buy the wrong base material of ADPOLY adhesive resin, a five-layer composite film will delaminate after three days of curing, and the entire roll of bags will tear from the middle to the bottom; if you buy the right base material, the peel strength and boil resistance will be on par with the main brand, and after going on the machine, it can be continuously produced without rework. Ningbo Kolon New Materials Co., Ltd. has been producing imported polyolefin adhesive resin secondary brands for many years, with stable channels for ADPOLY, ADMER, and MODIC, and handles numerous cases each year of material selection for the adhesive layers of composite films.
