{"id":14252,"date":"2026-07-03T23:36:15","date_gmt":"2026-07-03T23:36:15","guid":{"rendered":"https:\/\/bonitopak.com\/?p=14252"},"modified":"2026-07-12T23:41:41","modified_gmt":"2026-07-12T23:41:41","slug":"how-to-choose-a-molded-pulp-packaging-manufacturer","status":"publish","type":"post","link":"https:\/\/bonitopak.com\/pt\/how-to-choose-a-molded-pulp-packaging-manufacturer\/","title":{"rendered":"Como escolher um fabricante de embalagens de polpa moldada"},"content":{"rendered":"

A molded pulp packaging manufacturer turns natural fibers sugarcane bagasse, bamboo, wood pulp, or recycled paper into custom trays, inserts, and food containers through wet pressing or dry pressing. This guide covers how the process actually works, what materials and certifications are worth checking, and what a real mold design and sampling timeline looks like, using Bonitopak’s own production process in Dongguan, China as the working example.<\/em><\/p>\n\n\n\n

If you’ve searched for a molded pulp packaging manufacturer, you’re probably past the \u201cwhat is molded pulp\u201d stage and into evaluating who can actually build it. That’s a fair place to start, because not every company that lists molded pulp on a product page owns a mold shop, runs its own pressing lines, or can turn a 3D drawing into a working sample in under two weeks.<\/p>\n\n\n\n

Molded pulp packaging \u2014 trays, inserts, clamshells, and food containers pressed from natural fiber \u2014 is manufactured two ways: wet pressing and dry pressing. Which one a manufacturer uses, and how well they explain the difference, tells you a lot about how the rest of the relationship will go. This guide breaks down what a molded pulp packaging manufacturer actually does, the materials and certifications worth checking, and what a real mold design and sampling process looks like \u2014 using Bonitopak’s own production line in Dongguan, China, as the working example throughout.<\/p>\n\n\n\n

What Does a Molded Pulp Packaging Manufacturer Actually Do?<\/strong><\/strong><\/h2>\n\n\n\n

A molded pulp packaging manufacturer takes raw plant fiber \u2014 sugarcane bagasse, bamboo, wood pulp, or recycled paper \u2014 mixes it into a slurry, and presses it into shape using a custom mold. Bonitopak runs this process in-house, from 3D mold design through wet or dry pressing to finished, ready-to-ship packaging.<\/p>\n\n\n\n

The job splits into two halves: material processing and mold tooling. On the material side, fiber is pulped, screened, and formed into sheets or shapes under pressure. On the tooling side, a manufacturer needs the capability to design and cut a custom mold \u2014 the metal negative that gives the tray its shape \u2014 before any packaging can be pressed at all.<\/p>\n\n\n\n

Bonitopak keeps both halves in-house: an in-house design team drafts the 3D mold drawing in SolidWorks or Creo, accepting IGS and STEP files, and an in-house tooling team builds the physical mold. That matters because manufacturers who outsource tooling to a third-party mold shop add a step, and a markup, between your drawing and your first sample. When tooling stays in-house, mold changes are faster and cheaper to make.<\/p>\n\n\n\n

Wet Pressing vs. Dry Pressing: How the Process Changes the Product<\/strong><\/strong><\/h2>\n\n\n\n

Wet pressing forms pulp into a mold while it’s still saturated, producing a smoother surface finish suited to electronics, cosmetics, and retail packaging. Dry pressing uses 100% recycled corrugated or paper stock at a 2.5\u20133.0mm wall thickness, built to pass standard drop testing for general protective packaging.<\/p>\n\n\n\n

Both processes start with pulped fiber, but the method shows up in the finished tray. Wet pressing \u2014 Bonitopak’s process for trays used in electronics, cosmetics, wine bottle packaging, and colored trays \u2014 presses the fiber while it’s still wet, which gives a smoother surface and lets it hold finer detail, useful when packaging sits inside a retail box a customer will actually see.<\/p>\n\n\n\n

Dry pressing works from recycled corrugated and paper stock instead of virgin fiber, and is built for function over finish: general-purpose protective trays and industrial packaging, at a 2.5\u20133.0mm wall thickness engineered to pass standard drop testing. It also stacks more efficiently \u2014 Bonitopak’s dry-pressed trays save up to 20% in stacking space.<\/p>\n\n\n\n

A manufacturer that can only run one process will steer every quote toward it, whether or not it’s the right fit for your product. Ask which process they’re actually recommending for your use case, and why.<\/p>\n\n\n\n

What Materials Do Molded Pulp Manufacturers Use?<\/strong><\/strong><\/h2>\n\n\n\n

Bonitopak’s molded pulp packaging is made from sugarcane bagasse, bamboo fiber, and wood pulp for wet-pressed trays, and 100% recycled paper pulp for dry-pressed trays \u2014 all biodegradable and compostable, breaking down within 90 days.<\/p>\n\n\n\n

Material choice affects cost, texture, and the sustainability story, so it’s worth knowing what’s actually in the tray you’re ordering:<\/p>\n\n\n\n