Applications of Polybutylene Succinate in Industrial Manufacturing

Polybutylene Succinate (PBS) offers targeted material characteristics for demanding applications in sustainable industrial manufacturing. Our integrated production enables stable supply and technical consistency, supporting the needs of specialized downstream industries. Below, we outline key application scenarios, with focused compliance, composition, process, and product details for each sector.

1. Compostable Food Packaging Films

Major food processors deploy PBS as the primary polymer matrix for producing compostable packaging films. PBS demonstrates high heat resistance and clarity, enabling the production of form-fill-seal packaging, pouch films, and biodegradable trays. Downstream converters often co-extrude PBS with other biopolymers to achieve regulated food contact performance. Processors implement tight traceability and batch controls, as required by food sector regulatory regimes.

Industry compliance standards

• EU Regulation (EC) No 10/2011 Plastic Materials and Articles in Contact with Food
• US FDA 21 CFR 177.1630 (Polyethylene polymers used for food-contact films)
• EN 13432: 2000 (Requirements for Packaging Recoverable Through Composting and Biodegradation)
• ISO 17088:2021 (Specifications for Compostable Plastics)

Typical usage ratio

• 70–100% PBS as the base layer
• 7–20% blending with PLA, PBAT, or starch-based materials for mechanical/compostability balancing
• Ratio selected based on film ductility, sealing strength, and compost time outcomes in pilot runs

Downstream process integration

• PBS resin dosed into twin-screw extruders for cast or blown film conversion
• Co-extrusion or lamination with barrier or adhesive layers for complex packaging
• Secondary slitting, corona treatment, and printability enhancement applied post-extrusion

Final product types

• Compostable snack food pouch films
• Biodegradable tray lid films
• Fresh produce bags
• Multipurpose supermarket/retail packaging wraps

2. Single-Use Tableware and Cutlery

Producers of disposable plates, bowls, and rigid cutlery specify PBS for its superior balance of rigidity, process window, and compostability. The material facilitates injection molding and thermoforming, achieving consumer-grade smoothness and edge safety. Formulations must comply with food contact and compost certifications, with pigment and additive levels strictly controlled for both color and regulatory limits. Manufacturers rely on process stability and cycle time efficiency during high-volume seasonal demand.

Industry compliance standards

• US FDA 21 CFR 175.300 (Resinous and Polymeric Coatings for Food Contact)
• EN 13432 (Certification for Industrial Compostability)
• DIN EN 14995:2007 (Plastics – Evaluation for Compostability)
• China GB/T 38082-2019 (Requirements for Compostable Plastics)

Typical usage ratio

• 80–95% PBS as main injection or thermoforming polymer
• 5–20% mineral filler or PBAT for impact balance and heat resistance
• Adjustable up to 10% food-safe colorant, depending on end-product SKUs

Downstream process integration

• PBS pre-blended with color masterbatch and flow modifiers
• Direct feeding into injection or thermoforming systems
• Cycle control optimized for fast demolding and uniform cavity fill

Final product types

• Disposable forks, knives, spoons
• Compostable plates and bowls for catering and foodservice
• Coffee cup lids and stir sticks
• Fast-food take-out meal containers

3. Agricultural Mulch Films

Agricultural film producers formulate PBS into biodegradable mulch sheeting to meet regulatory phase-out of conventional PE mulches. Performance requirements include soil biodegradability and mechanical integrity under UV, weather, and tillage conditions. End users minimize waste collection labor by using PBS films that fragment and biodegrade post-harvest, leaving no toxic residues. Accurate resin selection and process tuning are critical for film laying, perforation, and tractor application compatibility.

Industry compliance standards

• EN 17033:2018 (Biodegradable Mulch Films for Agricultural Use)
• ASTM D6400-23 (Compostable Plastics in Aerobic Composting Systems)
• ISO 17556:2019 (Ultimate Aerobic Biodegradability in Soil)
• China NY/T 3196-2018 (Technical Requirement for Biodegradable Mulch)

Typical usage ratio

• 60–95% PBS content for main mulch layer, depending on required field degradation time
• 5–30% PBAT or PLA blended for tear resistance and temperature resilience
• Up to 5% UV absorber or black pigment for degradation rate adjustment

Downstream process integration

• PBS pelletized and pre-dried before blown-film extrusion
• Film trimming and perforation performed in-line
• Roll conversion sized for direct mounting on standard agricultural mulch applicators

Final product types

• Biodegradable black and clear mulch films
• Soil cover sheeting for vegetable and flower cultivation
• Degradable orchard floor mats
• Compostable vineyard weed barriers

4. Biodegradable Foam Packing Materials

Specialty foam manufacturers utilize PBS in extruded and molded foam blocks as a replacement for expanded polystyrene (EPS) in packaging. Controlled foaming strategies yield energy-absorbent, resilient foam for electronics, glassware, and perishable shipments. Manufacturers must verify both mechanical drop protection and compostability according to waste management regulatory frameworks. Processing requires optimized nucleation, foaming agents, and cooling profiles tailored to PBS melt behavior.

Industry compliance standards

• ASTM D6866 (Biobased Content for Plastics)
• EN 13432 (Compostability and Biodegradation of Packaging)
• REACH Regulation (EC) No 1907/2006 (SVHC-free requirements)
• Chinese GB 4806.7-2016 (Requirements for Plastic Food Packaging in Some End-Uses)

Typical usage ratio

• 85–100% PBS base resin in foam matrix
• 0.5–3% food-safe blowing agent, e.g., CO2 or nitrogen
• 0.5–2% nucleator or cell regulator

Downstream process integration

• PBS compounded and pelletized with foaming/aspect ratio additives
• Continuous extrusion foaming using tandem extruders and controlled gas injection
• Die-cutting or molding into custom pack inserts and sheets

Final product types

• Protective packing peanuts for parcel shipments
• Shock-absorbing foam blocks for electronics and appliances
• Biodegradable bottle and glassware trays
• End-of-life compostable produce cushioning pads

5. Fiber and Nonwoven Materials for Hygiene and Medical Applications

Producers of spunbond and meltblown nonwovens choose PBS as a biodegradable base resin for single-use hygiene and limited-use medical textiles. PBS-based fibers demonstrate rapid hydrolysis and compostability, fulfilling global requirements on single-use plastic reduction. Hygiene converters require high consistency and low extractables, with stringent quality certifications for baby care and sensitive skin products. Medical-grade production maintains ISO 13485 traceability, including documentation of raw material integrity and bioburden controls.

Industry compliance standards

• ISO 13485:2016 (Medical Devices—Quality Management Systems)
• OEKO-TEX Standard 100 (Ecological Requirements for Textiles)
• EU Plastic Carrier Bag Directive (EU) 2015/720
• Chinese GB/T 23331-2020 (Environmental Management System)

Typical usage ratio

• 98–100% PBS for medical and hygiene fiber webs
• 0–2% hydrophilic surfactant for improved absorbency
• Optional co-spinning with up to 20% PLA for tensile and drape improvements

Downstream process integration

• PBS supplied as resin pellets for direct textile extrusion
• Spunbond or meltblown processes used to form fiber mats with controlled weight and thickness
• Conversion into rolls, sheets, or die-cut pads for later assembly

Final product types

• Biodegradable baby wipes backings
• Compostable medical drapes and gowns for limited-use applications
• Feminine care topsheets and backsheets
• PBS-based spunbond wrapping for instrument packaging