𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞 : 𝐁𝐚𝐝 𝐬𝐮𝐫𝐟𝐚𝐜𝐞𝐬 𝐢𝐧 𝐛𝐢𝐨𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬 𝐚𝐫𝐞 𝐧𝐨𝐭 𝐚 𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥 𝐟𝐚𝐢𝐥𝐮𝐫𝐞

𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞

𝐁𝐚𝐝 𝐬𝐮𝐫𝐟𝐚𝐜𝐞𝐬 𝐢𝐧 𝐛𝐢𝐨𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬 𝐚𝐫𝐞 𝐧𝐨𝐭 𝐚 𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥 𝐟𝐚𝐢𝐥𝐮𝐫𝐞. 𝐓𝐡𝐞𝐲 𝐚𝐫𝐞 𝐚 𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠 𝐟𝐚𝐢𝐥𝐮𝐫𝐞.

The industry often accepts a painful trade-off with natural fiber and agricultural residue composites: "If you want sustainability, you have to accept a rough, porous surface.

We reject this trade-off.

Surface integrity - aesthetic finish and moisture resistance - is not determined by the biomass or fiber. It is determined by the rheology. You can achieve high-content blends (30–35 w.% biomass) with a perfectly smooth, resin-rich "sealed surface." But you cannot do it with standard settings.

The secret is controlling the melt front dynamics. You must force the physics to work for you, creating a resin-rich outer layer that effectively buries the high-viscosity fibers.

Here is how we engineer the "Sealed Surface":

- Mould Thermal Control (The Differentiator): Stop cooling too fast. We maintain the mould at an elevated 55–60 °C. This delays freezing just enough to let the low-viscosity polymer flow to the exterior, displacing the biomass and forming a smooth protective skin.

- Flow vs. Degradation: It’s a tightrope. We run PP/Biomass blends at the upper limit (185–190 °C) for maximum flow, but minimize residence time to zero-tolerance limits to prevent biomass degradation.

- Precision Switch-Over: Timing is everything. We set the volume-to-pressure switch-over late - at 97–98% cavity fill. Any earlier, and the packing pressure disrupts the resin film you just created.

The result? A sustainable material that doesn’t look "sustainable." It looks like a premium product.

Start controlling the process.

Is surface quality limiting your use of biomaterials? Let’s fix your process parameters.

source : NATURE2WORLD

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