Multi-Bottle and In-Store Packing

Load capacity starts with the real filled weight

A still-wine bottle runs 1.2 to 1.8 kg filled. Champagne and heavy-based spirits exceed 2 kg. So the box load capacity should be at least twice the actual filled weight. That is the number we design to, not the empty bottle weight. If your bottles are heavier than average, tell us up front.

The base carries most of the load. We use a reinforcing card, a double layer, or an EVA or moulded-pulp tray under the bottles. Lid-and-base and drawer formats are the highest risk at the base, because the weight sits on the joint between the base wall and the base panel. A six-bottle magnetic box with heavy champagne needs more than a single sheet of greyboard under the bottles.

Stacking in store or in a warehouse adds another load path. Our in-house checks include a stacking top load of 40 kg or more for 24 hours. That is not a number we guessed. It is the test we run before a box ships.

Handles fail first, so we build them twice

Handle failure is the most common complaint on multi-bottle boxes. A die-cut handle in a single layer of cardboard tears after a few lifts. We add a folded-back paper layer at the handle position. That extra layer doubles the thickness where your fingers pull, and it stops the tear before it starts.

For corrugated shippers, the handle is usually cut into the top flap or the side wall. The folded-back layer goes on the inside, glued flat, so it does not change the outside look. For rigid boxes with a rope or ribbon handle, we reinforce the anchor points the same way.

If you expect the box to be carried by the handle across a car park or up stairs, tell us. We will spec the handle for a filled weight that is double your heaviest bottle, not the average.

Dividers decide whether the box goes together in store

When packing happens in store, the divider is where errors happen. A divider that can be inserted backwards or upside down will be, at least once. We fix that with structure, not training. Two details: orientation arrows plus asymmetric locating tabs. If the divider is reversed, the tabs will not seat. The person packing does not have to read instructions. The box simply will not close.

Sometimes one box needs to take two bottle diameters, like a burgundy shape and a bordeaux shape. We put two fold positions on one divider, marked A and B on the reverse. Fold on A for the wider bottle, fold on B for the slimmer one. That keeps the bottle from rattling sideways without making two different dividers. To set those positions, send us the maximum and minimum bottle diameters you will pack. We will work out the fold lines so each bottle is held at four points, no unsupported neck or shoulder.

The insert rule still applies: the bottle must be held at four points, with no unsupported neck or shoulder. A divider that only touches the bottle at two points lets the neck swing under a drop. We check every divider against that rule, even in a simple six-bottle carton.

Windows are sized to the label, not the bottle

A windowed corrugated carrier looks simple until the label is half hidden. Window position is verified against both bottle labels, not sized from one bottle type. We take the label height and position from your bottle sample or your artwork file, then set the window so the front label is fully visible and the back label is not cut off by the window edge.

The window film itself matters too. We use a clear PET or PP film, die-cut and glued from the inside. The glue line is set back from the window edge so it does not show through. If the box will sit under bright retail lights, we can use an anti-glare film, but that is a choice you should make after seeing a printed sample.

One warning: a window weakens the panel it is cut into. On a corrugated shipper, we add a reinforcing frame around the window opening. On a rigid box, the window is usually in the lid, which carries less load, but we still check the corner strength.

What we control and what we check

Our control tolerance is plus or minus 1 mm on inserts and plus or minus 2 mm on the box body. Foldable boxes must have creases that do not crack, magnet position plus or minus 1 mm, and corners at 90 degrees when erected. Those numbers come from the production floor, not from a brochure.

We check every box with the bottle loaded. Shake it for 10 seconds, no movement. Tilt it 45 degrees, no slide. Invert it, no release. Then we drop it from 1.2 m on six faces, with the bottle inside, and we simulate truck and sea vibration. No internal movement after any of that.

Colour control is hardest on black, deep blue and burgundy. We match Pantone, approve a first article, and sample mid-run. If your brand colour is one of those three, expect a longer approval cycle and do not sign off on a photo alone. Ask for a physical sample.

Specification checklist

To get a structure that works, we need five inputs from you. Bottle diameters, maximum and minimum, for every SKU that goes in the box. Filled weight of the heaviest bottle, not the empty weight. Pack count, how many bottles per box. Packing location, in store or in a warehouse. Shipping method, courier, pallet or sea container.

From those we will confirm the board grade, the divider fold positions, the window size if there is one, and the handle reinforcement. Board grade means greyboard at 1200 g minimum, 1400 g for spirits, with a facing paper of at least 157 g. Divider fold positions are set to hold each bottle at four points. Window size is set against both bottle labels. Handle reinforcement is added as a folded-back paper layer at the handle position.

If any of those five inputs is unknown, we can work from a bottle sample. Send one bottle and we will measure it. That is often faster than trying to get the numbers from a spec sheet.

When this solution is the wrong choice

Multi-bottle boxes are not the right answer for a single premium bottle that needs a gift feel. A rigid single-bottle box with a velvet tray will do more for the unboxing moment than a six-bottle corrugated shipper. If the box is opened in front of the customer, go rigid.

In-store assembly only works if the box is simple enough for an untrained person to pack in under a minute. If your pack involves folding three dividers, inserting a tray and tying a ribbon, it will not happen consistently on a shop floor. That job belongs in a warehouse or with us.

If your bottles are all the same shape and the box ships direct to the consumer, a plain corrugated shipper with a moulded-pulp insert is often cheaper and protects just as well. Do not pay for a magnetic closure if the box gets thrown away after delivery.

Questions buyers ask

Send a bottle sample or the box dimensions and we will spec the structure, divider and window for your multi-bottle pack. Get a Quote