WILPAC Fresh Meat and Poultry Packaging Lines: MAP, Vacuum Skin and Leak-Proof Servo Sealing

Fresh meat and poultry fail on a packaging line in three specific ways. The first is seam leakage: a single wrinkle or a drop of purge trapped in the seal area opens a channel that passes a leak test at the factory and fails in the chiller two weeks later. The second is colour and drip loss: residual oxygen above the designed level turns beef brown and lets purge pool under the film. The third is presentation: a skin pack that wrinkles at the tray corner looks like a damaged pack on the shelf even when the barrier is intact. A line that is not engineered around these three behaviours will pass acceptance and still generate claims in the market.

Modified atmosphere packaging depends on gas control that is measured rather than assumed. WILPAC meat lines use a closed gas mixing and flushing module with individual mass flow control for oxygen, carbon dioxide and nitrogen, so the headspace ratio stays inside the recipe window across the full shift and not only at the start of it. Residual oxygen is verified by sampling rather than estimated from gas consumption. Where the retailer specifies a low oxygen skin pack, the same line switches to vacuum assisted MAP without a mechanical change, which matters for plants that run beef, pork and poultry on the same shift.

Vacuum skin packaging is where film control decides quality. WILPAC skin lines use servo film pulling with closed loop tension control, so the film is heated, formed and drawn over the product at constant tension: the pack follows the contour of the cut, the corners stay tight and the top web does not thin out over a bone edge. Because film transport is servo driven rather than pneumatic, the same machine runs a thin skin film for retail trays and a thicker barrier structure for export cartons by recipe selection, with repeatable positioning at every cycle and no drift as the sealing jaws warm up.

Hygiene and uptime are designed in rather than added. The sealing station is built for washdown with open frame geometry, sloped surfaces, stainless contact parts and no exposed threads where purge can collect. Continuous running is protected by tooling that is changed without special tools, quick release seals and a diagnostics layer that reports tension, temperature and gas deviation before a pack is rejected. A meat line is only as good as its worst shift, so every WILPAC whole line, from tray denesting through MAP or skin sealing, metal detection, check weighing, labelling and case packing, is delivered with documented handover, spare parts and service response, because the buyer is paying for ten years of output, not for a machine that runs well on demonstration day.