Value in molded fiber comes from more than the forming process. The inner surface must manage the contents, the exterior must withstand handling and abrasion, and the fiber structure must create room for material reduction without sacrificing function.

Our Inventions | An Original Technology Portfolio

The following are selected invention patents arising from DBC’s sustained systems R&D. Jointly filed by entities associated with the BIOTEN Packaging system and now granted and published, they cover selected innovations in barrier coatings, fiber reinforcement, and exterior-surface varnishes.

01 | Inner-Surface BarrierPolyhydroxyalkanoate (PHA) Waterborne Barrier-Coating Composition and Its ApplicationGranted Patent Publication No. CN120925356B

02 | Fiber ReinforcementAcid-Neutral Nano-PHA Paperboard Reinforcing Agent: Preparation and ApplicationsGranted Patent Publication No. CN121295549B

03 | Exterior-Surface VarnishLow-Odor, Low-VOC Waterborne Tactile Barrier Overprint-Varnish Composition Containing PHA, and Its Preparation and ApplicationsGranted Patent Publication No. CN121496785B

Patents demonstrate the originality and boundaries of the technology portfolio; they do not replace validation of the specific SKU, process window, or performance of the complete finished article.

01 · FOOD-CONTACT SURFACE

Barrier Performance Inside | Contents

BIOTEN PHA waterborne barrier coating is applied to the food-contact surface and developed for grease, liquid water, hot liquids, and actual filling and use conditions. Foodservice containers require oil- and water-resistance testing, including at edges and corners; sealed bottles and jars require water vapor transmission rate (WVTR) testing; continuous lidding and sealing systems also require oxygen transmission rate (OTR) and seal-integrity testing. Different contents demand different barrier solutions.

02 · EXTERIOR SURFACE

Protection Outside | Exterior Surface

BIOTEN PHA waterborne overprint varnish is applied to the exterior surface to enhance appearance, haptics, abrasion resistance, and surface protection. It is suited to applications where the surface experience matters, including fragrance, beauty, premium consumer goods, and upscale foodservice packaging. This optional upgrade does not provide structural fiber reduction.

03 · FIBER CORE

Less Fiber at the Core | Fiber Network

The fiber-efficiency additive is introduced into the furnish, wet preform, and internal fiber network. At addition levels of only a few parts per thousand, it can deliver a several-fold improvement in fiber reinforcement. Validation compares strength, dimensional stability, forming stability, and material use per article. The packaging-minimization trend is not simply about making packaging thinner; it is about reducing weight and volume to the minimum necessary to maintain functionality. Lightweighting must therefore be assessed using the same furnish, mold, and operating conditions, with dry weight per article and three-dimensional functional performance compared side by side.

Research references:Regulation (EU) 2025/40, Article 10 and Annex IV; BIOTEN Developer.

Select Validation Targets by Application

Foodservice containers |Grease, liquid water, hot liquids, and edges and corners.

Sealed bottles and jars |WVTR and shelf life.

Lidding and sealing |OTR and seal integrity.

Protective inserts |Strength, dimensional stability, and lightweighting.

Premium exterior surfaces |Haptics, abrasion resistance, and appearance retention.

05 · JOINT VALIDATION

Start with One Target Article

The three engineering tracks can be selected independently or validated in combination. A project requires only three inputs to begin: one target article, one current baseline, and one actual use condition. Lightweighting validation must also compare dry weight per article and retention of functional performance.