可降解餐盒这行，市场上叫“PSM副牌”的货比真的还杂——有人拿普通淀粉加PE充数，有人把滑石粉填充的再生料当淀粉基卖。PSM这种可塑性淀粉材料，原料端要把淀粉改性塑化，小厂根本做不出稳定的料。国产PSM这条线，武汉华丽环保是绕不开的一家。副牌的水，得从这家技术持有方说起。
PSM是什么，国产格局
PSM是可塑性淀粉材料，以植物淀粉为主要原料经改性塑化制成，可完全生物降解，用于餐盒、购物袋、包装、玩具、一次性制品。全球淀粉基降解材料长期有若干国际品牌。国内这头，武汉华丽环保科技有限公司是PSM技术持有方和生物降解材料国家标准起草单位，自主研发淀粉含量大于80%的PSM材料，建成数万吨级全自动化生产线，产品通过比利时OWS、EN13432、ASTM D6400等国际降解认证，销往数十个国家，是国内PSM方向绕不开的头部。下游看，餐饮具和一次性包装占PSM消费大头，包装和农业种植是延伸方向。禁塑令后外卖和生鲜包装对淀粉基料需求起来，PSM因为可完全降解、又能在普通设备上注塑，在一次性餐具这条线上比PLA更易被中小厂接受，副牌流通量也跟着上来。
PSM副牌从哪来，和PE填充料怎么分
PSM副牌来自改性塑化装置开停车料、牌号切换过渡料、工艺波动致淀粉含量或熔融指数小幅偏离的批次。它仍是原厂原生PSM粒子，可降解骨架与正牌一致，个别指标小幅浮动，不是回料。要把PSM副牌和PE填充淀粉料分清：PE填充料只掺少量淀粉，主体是PE不降解；原厂PSM是高淀粉含量一次塑化料。别拿PE填充料当PSM副牌往可降解餐盒上凑，降解认证一测就露馅。PSM副牌按淀粉含量和熔融指数分档，淀粉含量直接决定降解性能，进厂要测淀粉含量和灰分。副牌按淀粉含量和填充比例分档，滑石粉加多了的料发脆易裂。
头部企业深度分述：武汉华丽环保
武汉华丽环保（Ecoplast）专注生物塑料及制品，从原料改性、材料生产到制品终端全链条，是PSM技术持有方和国标起草单位。它自主研发淀粉含量大于80%的PSM，建有全自动化生产线和制品线，产品过国际降解认证，用于餐盒、购物袋、包装、玩具。其副牌多来自改性塑化开停车和牌号切换，淀粉含量略飘、色相略黄，但可降解骨架与正牌同体系。对一般餐盒、非高要求一次性制品、包装，副牌替代进口淀粉基料的性价比明显。第二梯队里，深圳虹彩新材料等在淀粉/PBAT方向布局，但高淀粉含量PSM技术持有和规模化以武汉华丽为代表，仅作行业背景。可降解餐盒客户认的是淀粉含量和降解认证，武汉华丽把淀粉改性塑化做到淀粉含量大于80%，又是国标起草单位，下游拿它的料去做外卖餐盒，过堆肥检测和餐具接触要求都有出处，这是它在餐盒市场站住脚的原因。
PSM副牌选购避坑
第一，测淀粉含量和灰分，PE填充料淀粉低、灰分高，一测便知。第二，要降解认证，餐盒和一次性制品宣称可降解必须有EN13432或ASTM D6400报告，副牌别碰认证件。第三，熔融指数，PSM偏脆，副牌熔指偏差影响注塑餐盒成型。第四，干燥，淀粉基料吸潮，注塑前充分干燥，含水会银纹。第五，先测后签，客户先取样测淀粉含量、灰分和熔指，确认后再签批量合同。另外PSM耐水性一般，副牌别直接做长期盛液体的容器，按制品寿命选型。采购时要让供方标明淀粉含量和填充比例，滑石粉加多了的料会发脆、可降解性下降，餐盒跌落测试容易裂，这一条在签合同前就该写进验收标准。价格随淀粉和PLA行情波动，签长单建议锁价并约定淀粉含量下限。
科隆仓库现货
科隆仓库现货主推品牌：武汉华丽环保PSM可塑性淀粉材料副牌料。主要牌号：餐盒、购物袋、包装、玩具用高淀粉含量可降解专用料。包装规格：小包装与大包装（吨袋）均有备货。仓库现货通常在5000吨左右，其中小包副牌备货800-1000吨、箱装副牌备货300-500吨、大包料/吨袋备货3500-3900吨。供应保障：先测后签，客户先取样测淀粉含量、灰分、熔融指数，指标确认后再签订批量供货合同。餐盒、降解包装、一次性制品客户可报制品类型询价。
选型口诀与案例
国产PSM副牌选料三句话：淀粉含量先测，PE填充别当副，认证件走正牌。
In the biodegradable meal box industry, the market for so-called "PSM sub-brand" is really mixed—some use regular starch mixed with PE to fill the numbers, while others sell recycled materials filled with talc powder as starch base. For this kind of plastic starch material like PSM, the raw material must be modified and plasticized from the starch side, so small factories simply can't produce stable materials. In the domestic PSM line, Wuhan Huali Environmental Protection is an unavoidable company. The sub-brand is the main source of the sub-brand . What is
PSM? The domestic market
PSM is plastic starch materials, made mainly from plant starch through modification and plasticization, fully biodegradable, used in lunch boxes, shopping bags, packaging, toys, and disposable products. There have long been several international brands of starch-based degradable materials worldwide. Domestically, Wuhan Huali Environmental Protection Technology Co., Ltd. is the holder of PSM technology and a drafting unit of the national standard for biodegradable materials. It independently develops PSM materials with starch content greater than 80%, has built fully automated production lines with tens of thousands of tons, and its products have passed international degradability certifications such as Belgium's OWS, EN13432, and ASTM D6400. It is sold to dozens of countries and is an unavoidable leader in the domestic PSM sector. Downstream, tableware and disposable packaging account for the majority of PSM consumption, while packaging and agricultural cultivation are the main areas. After the plastic ban, demand for starch base material increased for takeout and fresh food packaging. PSM, being fully degradable and injection-molded on ordinary equipment, is more easily accepted by small and medium-sized manufacturers than PLA in the disposable tableware segment, and secondary brand circulation has also increased.
PSM Where does the sub-brand come from, and how is it separated from PE filler
PSM Sub-brand comes from the start-stop material of modified plasticizing units, the transition material for grade changes, or batches where process fluctuations cause slight deviations in starch content or melt index. It is still original original PSM particles, with a biodegradable framework consistent with the genuine brand, with some indicators fluctuating slightly, not recycled material. Distinguish between PSM sub-brand and PE filler starch material: PE filler contains only a small amount of starch, mainly PE that does not degrade; Original factory PSM is a high-starch content primary plasticizer. Do not use PE filler as a PSM sub-brand to add to biodegradable lunch boxes; degradation certification will reveal the truth once tested. PSM sub-brand is classified by starch content and melting index; starch content directly determines degradability. Starch content and ash content must be tested upon arrival. Sub-brands are graded by starch content and filling ratio; materials with too much talc powder become brittle and prone to cracking.
Leading Enterprise In-depth Analysis: Wuhan Huali Environmental Protection
Wuhan Huali Environmental Protection (Ecoplast) focuses on bioplastics and products, covering the entire chain from raw material modification and production to product terminal. It is the holder of PSM technology and a drafting unit of national standards. It independently develops PSM with starch content above 80%, has fully automated production and product lines, and its products have passed international degradation certification, used in lunch boxes, shopping bags, packaging, and toys. Its sub-brand mainly comes from modified plastics for start-stop and grade switching. The starch content is slightly floating and the color is slightly yellow, but the biodegradable framework is the same system as the genuine brand. For general meal boxes and non-high-demand disposable products and packaging, the sub-brand offers a clear cost-performance advantage in replacing imported starch base materials. In the second tier, Shenzhen Hongcai New Materials and others are focusing on starch/PBAT technology, but the holding and scaling of high-starch PSM technology is represented by Wuhan Huali, which is only an industry background. Customers of biodegradable meal boxes recognize starch content and degradability certification. Wuhan Huali modified and plasticized starch to achieve starch content above 80%, and as a drafting unit of the national standard, its materials are used downstream to make takeout lunch boxes. Both composting tests and tableware contact requirements have a source, which is why it has established itself in the lunch box market.
PSM Secondary Brand Selection Pitfalls
First, measure starch content and ash content. PE fillers have low starch and high ash content, so you can tell at a glance. Second, degradability certification is required. Lunch boxes and disposable products claiming degradability must have EN13432 or ASTM D6400 reports; secondary brands should avoid certified parts. Third, melt index: PSM is brittle, and secondary brand melt index deviations affect the molding of the food container. Fourth, drying: Starch base material absorbs moisture, thoroughly dried before injection molding, and moisture content will show silver patterns. Fifth, test before signing: customers first sample starch content, ash content, and melting index, and only sign bulk contracts after confirmation. Additionally, PSM water resistance is average; secondary brands should not directly make containers for long-term liquid storage, selecting based on product lifespan. When purchasing, suppliers must specify starch content and filling ratio. Adding too much talcum powder can cause brittle and reduced degradability, and box drop tests may crack. This should be included in the acceptance criteria before signing the contract. Prices fluctuate with starch and PLA market trends. For long-term orders, it is recommended to lock in prices and agree on a lower limit for starch content.
Cologne Warehouse Stock
Cologne Warehouse Stock Main Recommended Brand: Wuhan Huali Environmental Protection PSM Plastic Starch Material Sub-brand Material. Main grades: High-starch biodegradable materials for lunch boxes, shopping bags, packaging, and toys. Packaging Specifications: Both small and large packages (per ton bags) are stocked. Warehouse stock is usually around 5000 tons, with small sub-brand stocks at 800-1000 tons, sub-brand boxes at 300-500 tons, and large packages/ton bags at 3500-3900 tons. Supply Assurance: Test before signing. Customers first sample starch content, ash, and melting index; after confirming the indicators, sign bulk supply contracts. Customers can request product type quotes for lunch boxes, degradable packaging, and disposable products.
Selection tips and case studies
Domestic PSM secondary brand material selection in three sentences: first test starch content, do not use PE filling as a substitute, and use authenticated parts as genuine brands
