If you ship products that need to stay put inside a box—bottles, electronics, candles, cosmetics, gift sets—you have probably defaulted to foam, blister, or bubble. EVA foam cutouts. PET blisters. EPS blocks. They work. But they also raise three problems that are getting harder to ignore: rising EPR fees on plastic packaging, consumer hostility toward unboxing plastic, and PPWR recyclability targets that make non-recyclable inserts a compliance liability in the EU from August 2026.
Molded pulp trays solve all three in one part. They are engineered from recycled paper fiber—bagasse (sugarcane waste), bamboo pulp, or recycled cardboard—pressed into a three-dimensional cavity that matches your product's geometry. They replace the plastic insert without giving up product protection. And unlike foam, they go straight into the paper recycling bin.
This article explains what molded pulp actually is, how the two main process routes compare, when fiber beats foam on protection and cost, and what you need to know before you commit to tooling.
What molded pulp actually is (and isn't)
Molded pulp is wet paper fiber—typically a mix of recycled newsprint, corrugated clippings, bagasse, or bamboo pulp—formed over a shaped screen, then dried into a rigid, three-dimensional part. The result is an insert or tray with cavities that match your product's geometry [1].
It is not cardboard cut with a die cutter. It is not an egg carton (though egg cartons use a related process). Properly engineered molded pulp for product packaging uses one of two process routes:
Wet-press (smooth surface, higher precision). After forming, the still-wet part is pressed between heated metal molds under pressure. This compresses the fiber, smooths the surface, and produces crisp edges and tight dimensional tolerances. Wet-pressed trays feel closer to thick paperboard—clean, matte, and premium enough for retail unboxing. This is the route for beauty, electronics, spirits, and any product where the insert is visible to the customer.
Dry-press / transfer mold (rougher surface, lower cost). The part is formed and dried without the heated compression step. The surface stays textured—recognizably fiber, slightly fuzzy. Protection is still good, but precision and aesthetics take a step down. This route makes sense for transit protection where the insert never leaves the shipping box, or for high-volume applications where unit cost matters more than surface finish.
Both routes let you specify the fiber source and color—natural kraft tone, bleached white, or custom-dyed—and whether the tray carries an embossed logo. Both are made-to-order: your product's geometry drives the cavity design, and every new shape needs its own mold. The right choice between wet-press and dry-press depends on whether the insert serves a retail presentation role or stays hidden inside a shipper.
Molded pulp vs foam vs bubble: the actual trade-offs
Most DTC brands evaluate inserts on three criteria: protection, how it looks when the customer opens the box, and what it costs landed. Here is how molded pulp stacks up against the default alternatives:
| Criterion | Molded pulp (wet-press) | Molded pulp (dry-press) | EVA / PE foam | EPS foam | Bubble / air pillows |
|---|---|---|---|---|---|
| Surface finish | Smooth, matte, premium | Textured, industrial | Smooth, closed-cell | Beaded, rough | N/A (loose fill) |
| Cavity precision | High | Moderate | High (CNC-cut) | Moderate (molded) | None |
| Vibration damping | Good | Moderate | Excellent | Moderate | Poor |
| Drop / impact protection | Good | Moderate | Very good | Good | Poor (shifts in transit) |
| Recyclability at kerbside | Paper stream | Paper stream | Generally not kerbside | Generally not kerbside | Plastic film (limited) |
| PPWR empty-space exposure | Low (nestable) | Low (nestable) | Medium | Medium | High (fills volume) |
| Unboxing signal to customer | "Thoughtful, plastic-free" | "Functional, recycled" | "Premium protection" | "Industrial / dated" | "Cheap / generic" |
| Tooling required | Yes (mold) | Yes (mold) | Yes (CNC die) | Yes (mold) | No |
| Unit cost at scale | Moderate | Low–moderate | Moderate–high | Low | Very low |
The table makes the central trade-off visible: molded pulp gives you recyclability, a better unboxing signal, and lower PPWR empty-space exposure. Foam gives you slightly better impact protection and, for EVA, a premium tactile feel for certain categories. Bubble is cheapest per unit but weakest on every qualitative dimension.
When molded pulp is the right choice
Fiber inserts win decisively in these scenarios:
You sell into the EU and PPWR applies. The Packaging and Packaging Waste Regulation introduces recyclability performance grades from 2030. Packaging that is not recyclable at scale faces restricted market access. EPS and most foams do not meet the design-for-recycling criteria. Molded pulp, as a mono-material fiber part, fits the paper recycling stream that every EU member state already operates (see our PPWR 2030 recyclability targets guide for the full timeline). If your EU volume is growing, switching inserts now costs less than doing it under a compliance deadline.
Your brand positioning is plastic-free or low-waste. A beauty brand that markets itself as clean and sustainable undermines that story when the customer opens the box and finds a PET blister tray. A molded pulp insert reads as intentional—it says the brand thought about the whole experience, not just the bottle.
Your product is heavy, rigid, and needs to stay put. Glass bottles, ceramic vessels, and multi-piece gift sets benefit from a cavity that locks each item in place. Molded pulp does this with geometry, not friction: the tray holds the product at multiple contact points and prevents items from knocking against each other.
You want one material stream for the whole package. When the outer box is paperboard and the insert is paper fiber, the customer puts everything in one bin. No disassembly instructions, no guilt about mixed materials. This simplicity drives higher actual recycling rates, which matters for EPR fee modulation in markets like France and the UK.
You're building a retail-ready unboxing. Wet-pressed molded pulp can serve double duty: it protects in transit and presents on the shelf or dresser. For DTC brands that also appear in retail (or aspire to), one insert that works for both channels cuts SKU count and simplifies inventory.
When foam or bubble still makes more sense
Fiber is not the answer for every product. Be clear-eyed about where alternatives still win:
Ultra-fragile, high-value items where vibration is the enemy. Precision electronics, scientific instruments, and delicate glass that ships long-haul may genuinely need the viscoelastic damping that closed-cell foam provides. Molded pulp is a rigid structure—it blocks movement, but it does not absorb energy the way EVA foam does.
Very low annual volumes with frequent SKU changes. Every molded pulp cavity needs a mold. If you launch limited-edition gift sets four times a year and each sells 500 units, the tooling amortization math may not work in fiber's favor. Foam cutouts or bubble might be the pragmatic choice until a product line stabilizes.
Extremely lightweight products. If your product weighs under 50 g and ships in a rigid box, the insert's job is mostly cosmetic. A die-cut paperboard card or minimal tissue wrap may be simpler and cheaper than a molded part.
The right question is not "which material is best?" It is "what does this product need to survive shipping, what does the customer expect when they open it, and what does regulation require for your market?"
What to ask before you commit to tooling
Switching to molded pulp means committing to a mold. Here is what to pin down with your packaging supplier before you proceed:
- Product geometry. Which items go in the tray? Exact dimensions and weights? Are there multiple SKUs that should share the same cavity layout?
- Retail or transit? Does the tray sit inside a retail box that the customer opens and keeps, or is it only for shipping protection? This determines wet-press versus dry-press.
- Existing packaging. Photos or 3D files of your current insert tell the engineer what needs improving. Dielines for the outer box define the tray's maximum footprint.
- Surface and color. Natural kraft, bleached white, or custom-dyed? Embossed logo? The answers affect tooling design.
- Volume and destination. Annual quantities determine whether tooling amortization works. The destination market determines whether you need specific fiber certification documentation.
Bring these to a specification discussion and a packaging engineer can turn your product geometry into a cavity design, recommend the right process route, and confirm whether molded pulp is genuinely the right move—or whether a different insert format makes more sense for your specific numbers.
PPWR and the direction of travel
Even if you are not selling into the EU today, the direction is clear. The EU PPWR's recyclability performance grades, the UK's modulated EPR fees for plastic packaging, and several US state EPR laws all create the same incentive: move inserts out of non-recyclable materials and into materials with established, high-performing recycling streams.
Molded pulp sits in the paper stream, which is the most mature recycling infrastructure on the planet. That does not make it a universal solution—but it does make it the most regulation-resilient insert format available today.
A tray that protects your product in transit, presents it well at unboxing, and goes into the recycling bin without guilt or disassembly is a hard combination to beat.
[1] For a broader overview of molded fiber packaging types and their relative costs, see PackageTheWorld's molded fiber packaging guide (July 2026).