HiSiaddi is an innovative foreign trade service provider driven by both technology transformation and foreign trade operations. It has established a "1+2+3+4=1" service system and can supply original factory polylactic acid (PLA) pellets from multiple well-known brands. As a foreign trader with independent R&D capabilities, HiSiaddi has repeatedly resolved customized PLA product demands for clients through technological cooperation with manufacturers and precise market insight. Below is a case study illustrating how HiSiaddi addressed customized PLA pellet requirements.
For inquiries about customized service solutions, please contact HiSiaddi customer service.
HiSiaddi overcame three major challenges including formula modification, process commissioning and export compliance, and successfully localized the procurement of three customized material grades.
The cooperating client, EcoSave SAS, is located in a high-end food industrial park in Lyon, France. It is a leading mid-to-high-end operator of pre-cooked meals and organic chilled food brands in Western Europe. Its products are sold at premium supermarkets including Auchan and Marks & Spencer. The company’s three core product lines are instant heatable food containers, high-barrier fresh-keeping films, and biodegradable coffee capsule shells, all positioned in the eco-friendly organic sector. Its full product range complies with EU regulatory standards including EU 10/2011 for food contact materials, EN 13432 for industrial compostability, REACH & SVHC, and full-chain SCIP compliance. The company maintains a stable annual PLA raw material procurement volume of 350 tons.
Prior to the project, the client sourced modified PLA pellets exclusively from overseas manufacturers including NatureWorks (USA) and TotalEnergies Corbion. However, the business faced multiple pain points: continuous price hikes of overseas raw materials, extended ocean logistics lead times up to 95 days, and a minimum customized modification order quantity of 80 tons from original suppliers. These restrictions made flexible small-batch R&D iterations of new products impossible. At the end of 2025, the client officially launched a localized Chinese PLA alternative procurement project.
The client independently contacted three top domestic PLA manufacturers to discuss customized requirements for three dedicated modified PLA grades. Nevertheless, most domestic manufacturers mass-produce general-purpose PLA pellets and only conduct minor adjustments to auxiliary agents based on their mature proprietary formulas, refusing to develop specialized formulations tailored to the client’s production conditions. Eight rounds of sample deliveries followed, yet the materials exhibited consistent defects during film blowing and injection molding processes, including insufficient heat resistance, brittle cracking, grease precipitation, and subpar barrier performance. New product R&D stalled, with losses exceeding 32,000 EUR attributable to sample mold opening and production line commissioning waste.
Upon recommendation by the French Eco-Materials Association, EcoSave formally appointed Shanghai HiSiaddi as its technical foreign trade service provider. Leveraging HiSiaddi’s team of polymer engineers and partnering with domestic PLA modification R&D factories, we delivered customized PLA pellets across five dimensions: substrate selection, formula modification, extrusion pelletizing process, end-product processing adaptation, and export compliance. An initial customized order of 72 tons was successfully delivered, followed by a long-term annual procurement framework agreement.
Product Specifications: Modified PLA pellets, HS Code 3913900000, packed in 25kg kraft paper bags lined with food-grade aluminum foil vacuum moisture-proof inner bags for export. Three customized grades are available: heat-resistant injection molding grade, high-barrier film blowing grade, and low-precipitation dedicated coffee capsule grade.
The client set differentiated customized parameters based on application scenarios of three end products, which also accounted for repeated failures of domestic trial samples.
1. Grade A – Heat-resistant injection molding PLA for instant meal containers: Designed for short-term microwave heating at 85°C; heat distortion temperature ≥ 88°C, elongation at break ≥ 18% (to mitigate brittleness of standard PLA). All components comply with EU 10/2011 food contact regulations; no small molecule migration or precipitation after grease immersion; finished products withstand drop tests without cracking, and fully biodegrade within 180 days under industrial composting conditions.
2. Grade B – High-barrier film blowing PLA for fresh food: Film thickness 25μm; oxygen transmission rate ≤ 350 cm³/(m²·24h·atm); no cracking after bending at -20°C cold storage. Compatible with fully automatic high-speed film blowers with stable melt strength to avoid film rupture; blocks grease and water vapor penetration for long-term cold meat preservation packaging.
3. Grade C – High-purity low-precipitation PLA for coffee capsules: High crystallinity with minimal residues; oligomer content < 80 ppm; no harmful substance precipitation after hot water extraction at 92°C. No bubbles form during high-pressure capsule injection molding, suitable for high-temperature high-pressure extraction in espresso machines. All raw materials and additives are listed on EU food-approved inventories.
1. Rough substrate selection: Factories uniformly adopted low-molecular-weight homopolymer PLA general resins without distinguishing dedicated substrates for injection molding, film blowing, or high-purity applications. Standard PLA softens at only 60°C, failing to meet microwave heat resistance requirements, while insufficient low-temperature toughness caused cracking of films and capsules.
2. Generic unoptimized modification formulas: Manufacturers relied on cheap universal plasticizers and fillers available on the market instead of food-grade bio-based modifiers. Auxiliary agent migration exceeded EU food contact limits after grease exposure. Only simple PBAT blending was used for toughening without rheological ratio optimization, resulting in unstable melt flow and frequent film rupture during film blowing.
3. No targeted adjustments to pelletizing processes: General PLA production parameters were retained for twin-screw extrusion temperature, screw length-diameter ratio, and vacuum devolatilization settings. Insufficient volatile removal for high-purity capsule grades led to internal bubbles during high-temperature injection molding; agglomeration of nano-fillers in barrier grades caused crystal spots and pinholes in films.
4. No supporting guidance for end-user processing: Domestic manufacturers only provided physical property reports without supplying equipment parameter guidance for film blowing and injection molding tailored to the French client’s production lines. The client continued using processing parameters developed for imported materials, and mismatched crystallization rates and fluidity of domestic PLA exacerbated defective finished products.
HiSiaddi formed a dual working group consisting of polymer modification engineers and foreign trade compliance specialists, establishing a 22-day sample R&D cycle. We collaborated with two mid-to-high-end domestic factories integrating PLA polymerization and modification capacity to implement targeted optimization for each grade.
HiSiaddi selected PLA base resins tiered by operating conditions of the three products:
· Grade A (meal container): High-crystallinity heat-resistant PLA chips
· Grade B (film blowing): High melt strength copolymer PLA substrate
· Grade C (coffee capsule): Medical-grade high-purity low-residual PLA raw material
Low-cost general resins were eliminated. We verified EU food access qualification documents for each batch of raw materials to block unqualified substrates from entering production.
1. Grade A Heat-resistant Meal Container PLA: Blended food-grade citrate bio-plasticizers and compliant PBAT at precise ratios, supplemented with small amounts of food-grade talc to enhance thermal stability, eliminating cheap industrial plasticizers. The heat distortion temperature rose from the original 62°C to 90°C, while elongation at break increased from 2% (virgin PLA) to 21%, resolving high-temperature softening and low-temperature brittleness defects.
2. Grade B High-barrier Film Blowing PLA: Food-grade nano-silica and chitosan bio-barrier additives were incorporated into the PLA/PBAT blend system, pre-treated with silane coupling agents to prevent filler agglomeration. Post-optimization oxygen barrier performance improved by 42%, enabling stable production of 25μm ultra-thin films on high-speed equipment without pinholes or rupture.
3. Grade C High-Purity Coffee Capsule PLA: Minimal-additive simplified formula with only trace food-grade heat-resistant antioxidants. Total additive dosage was strictly controlled, and a two-stage high-vacuum deep devolatilization process was added to reduce oligomer content from 320 ppm to 72 ppm, meeting zero precipitation standards for hot water extraction.
HiSiaddi engineers were stationed at manufacturing plants to supervise production. Three independent dedicated modification lines were assigned to the three grades to isolate general-purpose material production and avoid cross-contamination:
1. Refined zoned temperature control: Feed zone 155~160°C, melting zone 180~188°C, homogenization zone 175~182°C, die head 170°C – distinct from high-temperature extrusion processes for general PLA to minimize thermal degradation of molecular chains.
2. Optimized side feeding and vacuum systems: Nano-fillers for barrier grades were fed in segmented side streams to improve dispersion uniformity; dual-stage high-negative-pressure vacuum devolatilization was activated for capsule grades to maximize removal of residual monomers and small-molecule impurities.
3. Upgraded pelletizing and drying procedures: Finished pellets underwent low-temperature circulating hot air drying to control moisture content within 0.01%, preventing bubbling during subsequent injection molding and film blowing caused by water vapor.
Three gradient sample iterations were completed sequentially: 500g lab samples → 50kg pilot samples → 300kg mass production samples, all sent to SGS laboratories in France for full-parameter testing.
HiSiaddi compiled bilingual French-English processing operation manuals and remotely coordinated with French process engineers to adjust equipment parameters grade by grade: optimize barrel temperature and mold cooling rates for meal container injection molding; fine-tune screw speed and traction speed for film blowing grades; extend holding pressure and lower injection rates for capsule molding. Continuous 72-hour small-batch trial production lifted the yield rate of all three product lines from the original 56% to 98.7%.
1. Food contact compliance testing: Full migration testing per the latest EU 10/2011 standard was performed on all three PLA grades, with EU-recognized SGS test reports and Declaration of Conformity (DoC) statements issued. Traceability lists and EU access numbers were provided for all additives and substrates.
2. REACH/SVHC + SCIP notification: HiSiaddi entrusted local French compliance agents to complete REACH compliance filing and SVHC 249-item high-concern substance screening for all three grades, while submitting product notifications to the ECHA SCIP system to obtain official notification codes, mandatory for customs clearance in France.
3. Compliant SDS and packaging rectification: Bilingual French-English Safety Data Sheets (SDS) were drafted in accordance with GHS 7.0 and CLP regulations. Outer packaging was printed with GHS-compliant labels, product grades, and EU import contact addresses. Food-grade vacuum aluminum foil lined bags were used for moisture and oxidation protection, consistent with EU warehousing specifications.
4. Detailed customs declaration classification: Customs documents clearly separated product names, modified components, and end-use applications for the three grades to avoid customs inspection risks arising from misclassification.
72 tons of customized PLA (32 tons Grade A, 25 tons Grade B, 15 tons Grade C) were shipped in two batches from Shanghai Port to Le Havre Port, France. Complete compliance documentation enabled customs clearance and warehousing within one working day. Post-launch, instant heatable meal containers, fresh food films, and coffee capsules successfully passed quality control audits for Auchan and Marks & Spencer supermarkets, allowing the client to launch new products on schedule and avoiding 32,000 EUR in losses from sample mold opening and idle production lines. The comprehensive procurement unit price of localized customized PLA decreased by 28.5% compared to imported NatureWorks raw materials, and delivery lead times were shortened from 95 days to 37 days.
Three months after mass production validation, EcoSave SAS of France signed a 330-ton annual PLA procurement framework with HiSiaddi, locking in the three finalized formulas developed in this project. HiSiaddi committed to tracking annual updates to EU regulations and dynamically re-inspecting SVHC and food migration indicators, with pre-shipment compliance audits for every delivery batch. The client subsequently entrusted HiSiaddi with formula customization and development for a new dedicated PLA grade for low-temperature quick-freezing trays.
Building on this benchmark case of a leading high-end French organic food brand, HiSiaddi leveraged the client’s Western European industry network to connect with three equivalent mid-to-high-end food brands in Belgium and Spain. We replicated the integrated service model of "custom formula R&D + on-site process commissioning + full-chain compliance", securing multiple batches of foreign trade orders for food-grade modified PLA and solidifying HiSiaddi’s differentiated service advantages in the high-end European biodegradable plastics sector.
The majority of domestic PLA manufacturers focus on low-cost domestic mass-market products, mass-producing standardized general-purpose pellets with limited capacity for differentiated formula customization and refined process optimization tailored to mid-to-high-end European and American food clients. They also generally overlook stringent EU export regulations including food contact requirements, REACH, and SCIP – core barriers preventing overseas high-end brands from switching to domestic raw material procurement.
Breaking away from the superficial model of traditional foreign trade limited to sourcing resale, HiSiaddi centers material technology as its core competitive advantage, bridging five key links: substrate selection, formula modification, pelletizing technical adjustment, end-product processing adaptation, and cross-border compliance. The solution not only resolved the client’s procurement pain points of long import lead times, high minimum order thresholds, and inflated raw material costs, but also established deep binding relationships with high-quality overseas end customers through customized technical and compliance services. Against the backdrop of global plastic restriction policies and continuously tightening EU environmental regulations, a technology + compliance dual-driven foreign trade service model represents the core pathway for domestic PLA to penetrate mid-to-high-end European food packaging supply chains.
For inquiries about customized service solutions, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
English
