Cut a supermarket meat tray open and you find four things stacked together: a perforated top sheet, a pad of absorbent material, a film backing, and the tray itself. The pad is a food contact material, built from the same families of raw materials as paper and film packaging, and it is regulated as such. This guide describes what each layer is, which one touches the food, and why "is it safe" is answered by the food contact rules rather than by the word "chemical".
1. What is actually in the tray
The pad is a laminated construction, not a single material. Most of what a buyer sees is the top sheet; the working part is inside.
- It sits under the product, not around it. The pad's job is to hold liquid that leaves the meat after packing, so it does not pool in the tray and reach the pack's outer surfaces.
- The top sheet is the food contact surface. Liquid passes through it; the meat does not.
- The construction is thin. A retail pad usually runs a few millimetres thick, which is why it is easy to mistake for a single sheet of paper.
- The same build appears across the counter. Trays of beef, pork and seafood use the same four-layer construction with different sizes, thicknesses and absorbencies.
2. The four layers
Read the table as an anatomy, not as a selection guide.
| Layer | Common materials | What it does | Touches food | Compliance focus |
|---|---|---|---|---|
| Top sheet | nonwoven PP, perforated PE film, or food-grade paper | lets liquid through and keeps the meat off the wet core | yes, directly | the food contact surface; migration limits attach here |
| Absorbent core | wood pulp, tissue, superabsorbent polymer, or a cellulose blend | holds the liquid and keeps it from flowing back | only if the top sheet is breached | indirect; raw material and additive listings |
| Backing | PE film or coated paper | stops liquid reaching the tray and the pack label | no, it faces the tray | indirect; barrier performance matters |
| Adhesive or seal | hot-melt, or a heat seal between layers | bonds the layers so the pad does not delaminate when wet | no, unless liquid wicks to the edge | indirect; must not migrate through the top sheet |
The materials named are common options, not a fixed bill of materials. What matters is that each layer is a specified material with its own place in the food contact documentation.
3. Which layer touches the food
Only the top sheet is in direct contact, and that is the layer the tightest limits attach to. The other three sit behind it.
- The top sheet carries the contact rules. It is assessed for what it can release into a fatty or aqueous food, which is exactly the condition a meat tray creates.
- The core is protected by the sheet. While the sheet stays intact the core is not in direct contact — but its materials still have to be permitted substances, because the sheet can be perforated, folded or torn in use.
- The edge is the weak point. Liquid wicks sideways along the cut edge, which is why the seal between layers and the cut quality matter as much as the materials themselves.
4. Why it is a food contact material, not a "chemical"
The word "chemical" in the question usually means "something added that I did not ask for". The pad does not work that way.
- It absorbs; it does not treat. A pad holds liquid by physical structure. It is not designed to release anything into the meat.
- Its materials are listed, not improvised. Paper, film, pulp and adhesive used in food contact are drawn from permitted lists in each market, and the finished pad is documented against them.
- Migration is the measured question. What the rules limit is how much of a substance can move from the pad into the food under the conditions of use — not whether the pad contains any particular ingredient.
- Compliance is per market. The same pad may satisfy one destination's rules and need different documentation for another. The fresh absorbent pads overview sets out the market-by-market position.
FAQ
What is the pad under meat made of?
Four layers: a perforated or nonwoven top sheet, an absorbent core of pulp or tissue, a film backing, and the adhesive or heat seal holding them together.
Are meat absorbent pads poisonous?
They are built from materials permitted for food contact and documented against the rules of the market they are sold into. The relevant question is not whether a substance is present, but how much can migrate into the food — and that is what the rules limit.
Can the pad be left under the meat until cooking?
Follow the pack instructions. A pad assessed for chilled retail display is not automatically assessed for a hot surface or an oven.
Why is the liquid sometimes red?
That is drip from the meat, not blood. Holding it so it does not pool in the tray is the pad's purpose.
Browse the range
For the pads used in retail meat trays, see meat absorbent pads and the pork absorbent pads range. Send the food type, the tray format and the destination market, and the layer construction can be confirmed before samples are issued.