Imagine two stores stocked with the same groceries at the same time. One offers standard wholesaler-grade merchandise. The other offers ready-made school supplies—a student breakfast set, a multi-pack of snacks with a "Backpack" sticker, and a beverage package in handy 0.3-liter bottles. Both stores purchased goods from the same wholesaler. But only one profited from the Back to School season. The difference was co-packing—a service of repackaging and preparing products for seasonal sales, which is worth planning as early as July.
What is co-packing and seasonal co-packing?
Co-packing (contract packaging) is a service involving the packaging, repackaging, or preparation of products for sale by an external entity – on behalf of and at the request of a brand or distributor. In the seasonal model, co-packing focuses on preparing products appropriately for a specific sales period: holiday sets, multi-packs for holidays, or "Back to School" sets.
Co-packing doesn't mean changing the product. It involves grouping existing SKUs into new configurations, adding bulk packaging, shrink wrap, seasonal labels, or display elements. The result: the same products that the customer would have bought anyway become a more attractive, ready-made purchase proposition—and typically have a higher margin than selling individual items.
Why is Back to School a key season for co-packing?
August and September are the second busiest seasonal shopping season in Poland, right after Christmas. According to industry data, Polish families spend an average of 800–1,200 PLN per child on school preparation, with a significant portion going to groceries: snacks, beverages, school breakfasts, and hygiene products.
For grocery stores, this is an opportunity to increase their shopping basket by 15–251 TP3T by offering pre-made kits instead of individual products. For wholesalers, it's an opportunity to increase order volume and build customer loyalty by providing products that are ready for display, without requiring additional labor.
What products are suitable for Back to School co-packing?
Not every grocery product is worth repackaging. The following are best suited for seasonal co-packing:
Snacks and sweets in multipacks
Candy bars, cookies, wafers, chips – these are products parents buy "for their backpacks." A collection of 5-7 different flavors in a single shrink wrap with a "Breakfast Mix" or "Snack Week" label creates a finished product with better presentation and a higher price per unit than selling them separately.
Bottled drinks 0.3–0.5 l
Smaller sizes of drinks are clearly more popular with parents for their children. Multipacks of 6 or 12 bottles in assorted flavors with a "Back to School" sticker sell better than standard single-flavor cases because they offer a sense of choice and convenience.
Hygiene and chemical products in starter kits
Toothpaste, liquid soap, shampoo – "back to school" sets of personal hygiene products are a regular part of September shopping. Co-packing allows you to combine products from different categories into one set, which customers readily accept as a ready-made solution.
Individually packaged products with a seasonal label
Even a simple sticker with a school theme or the words "Back to School" can change the perception of a product. Co-packing involves relabeling a standard product with a new seasonal wrapper without changing the composition or the original packaging.
What does the co-packing process look like in practice?
Ordering co-packing services requires several steps that should be planned at least 4–6 weeks in advance before the Back to School season, i.e. in July.
Step 1 – Set and SKU Definition
Start by answering the question: what kits do you want to offer, in what configurations, and in what quantities? Each kit is a new SKU in your system, which must have its own EAN code, description, and product data sheet for the ordering system.
Step 2 – Verify component availability
Please check that all products included in the kit are available in the required quantity and with the appropriate expiration date. Back to School kits must be available for sale for at least 6-8 weeks – components purchased with a short expiration date may expire before the end of the season.
Step 3 – Design and production of external packaging
Shrink wrap, bulk box, or cardboard box – the outer packaging of the set must contain all required information: a list of product components, EAN codes of the components, expiration date (the shortest among the components), and manufacturer information. The seasonal label is a marketing element, but it cannot replace the mandatory information on the packaging.
Step 4 – Co-packing line
Repacking can be done manually (for small volumes) or on automated packaging lines. For "Back to School" kits of 1,000-5,000 pieces, manual packaging by a dedicated team is often more cost-effective than setting up an automated line. For 20,000+ kits, automation is worth considering.
Step 5 – Quality Control and Logistics
Each kit leaving the co-packing line must undergo a completeness check (that all components are present) and a visual check (that the packaging is undamaged). Completed kits are palletized and marked like any other commercial product – with a logistics label and pallet code.
The economics of co-packing – is it worth it?
The math is simple: a set of five bars sold individually for PLN 2.50 yields PLN 12.50 with a margin of PLN 20%—a profit of PLN 2.50. The same set packaged together and sold for PLN 15.90 (at a similar production cost) yields a margin of PLN 30–40% higher, because the customer pays for the convenience and a ready-made solution, not just for the product.
Co-packing costs include the cost of packaging material (foil, labels: PLN 0.30–1.50/set for standard configurations), the cost of labor or line (PLN 0.50–3.00/set depending on complexity), and the potential cost of label graphic design (one-off). At sufficient volume and a good retail price, co-packing is one of the few tools that simultaneously increase revenue and margin without changing the product.
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Frequently asked questions about co-packing services
The optimal lead time is 6–8 weeks before the planned delivery date of the kits to stores. For Back to School seasons with delivery in mid-August, the order should reach the co-packing operator by early July at the latest. Planning in advance helps avoid queues with the operator (who is simultaneously processing orders for other clients) and allows time for label design, approvals, and any necessary adjustments.
If the kit contains only products with their own certificates and approvals for sale (which is standard for goods purchased from a legally operating wholesaler), a new certificate for the kit is not required. However, the kit packaging must meet food labeling requirements (EU Regulation 1169/2011), including indicating all ingredients, allergens, and expiration dates for each component. Exporting kits to EU countries requires labeling in the language of the destination country—this is an element that should be planned along with the label design.
Pay attention to three things: certifications (HACCP, BRC, IFS – depending on the target market requirements), food industry credentials (food co-packing has different requirements than cosmetics), and minimum volumes and unit prices. Request a sample kit before launching production – a single test kit allows you to identify errors in packaging configuration, labeling, or completeness before the production run.
