3D Rendering of Packaging Exploded Views: Box, Blister, Protective Insert
A well-executed exploded view lets you show in a single image what a photo never can: how the product sits, what holds it in place and what protects it inside the box. This tutorial walks through how to build an exploded view of packaging in 3D rendering, from the starting files to the final composition, with criteria for deciding how far to separate each layer and how to light it.
What you need before you start
The ideal starting point is the CAD or 3D file of the packaging: outer box, tray or blister, cardboard or foam inserts and the product itself. If it doesn’t exist, you can work from drawings, a physical prototype or photographs and model each part from scratch, although with less fidelity in dimensions and thicknesses.
It is also worth gathering the information a model doesn’t show: the real material of each component (micro-flute cardboard, thermoformed PET, polyethylene foam, tissue paper), the box finishes (varnish, stamping, embossing) and the high-resolution graphics with their die lines. Without the dieline, the designs won’t fit the faces accurately.
Finally, define how the image will be used. A technical sheet for the manufacturer, a presentation to a retail client or a product page don’t call for the same level of detail or the same reading. Being clear about the destination avoids redoing the composition once it is already lit.
Define what you want the image to explain
An exploded view is not a parts catalogue: it is a visual argument. Before modelling or moving anything, decide which message must come across clearly. It could be protection (how the insert absorbs impact), the opening experience (what you see first when you open the box) or construction (how many layers and of what material).
That message determines which elements are shown and which are left out. A 3D render of an exploded packaging view for a cosmetics manufacturer will emphasise the tray and the carton; one for a fragile electronic product will give prominence to the foam, the reinforced corners and the blister that holds each accessory in place.
Write down the reading order of the layers, from top to bottom or from outside to inside. That order will be the backbone of the composition and spares the viewer from having to work out which part goes inside which.
Prepare and clean up the model of each component
Engineering models are usually built for manufacturing, not for rendering. You need to simplify heavy meshes, remove screws or internal details that won’t be seen and, above all, give real thickness to surfaces that are zero-thickness planes in CAD. A cardboard flap with no edge gives itself away immediately in an exploded image, because the viewer sees it from the side.
Each part must be able to move independently, with its own pivot point and a clear name. If the inside of the box is a single merged block, there is no way to separate the tray from the insert without reworking the geometry.
Also check tolerances: the product must fit in its housing with a small margin. If the model has interferences, shadow artefacts will appear exactly in the areas you are trying to explain. In a 3D render of a blister and box interior, that clearance between cavity and product is precisely what gives credibility.
Separate the layers with an assembly logic
The separation between parts is not arbitrary. Each element must move along the axis along which it would be assembled or removed in reality: the lid upwards, the tray outwards, the product coming out of its cavity. That way the image reads as a process and not as a set of floating objects.
Imagine a box with a lid, a cardboard tray, a thermoformed blister and a product. In round numbers, a distance between layers of about half the height of the part is usually enough to see each one without the whole losing cohesion. Separating too much breaks the relationship between elements; separating too little makes them overlap visually.
Keep the same relative distance between adjacent layers and align them all on a common axis. If needed, add thin guide lines or dashed strokes linking each part to its assembly position. This device, inherited from technical drawing, helps in an exploded view of packaging aimed at audiences who need to understand the assembly.
Assign materials that explain the function of each part
In an exploded view, the material communicates as much as the shape. The transparent PET of the blister must show its gloss, its reflections and a slight thickness at the edges; the protective foam needs a visible microstructure, and the cardboard requires fibre, edge and a consistent roughness. If everything looks like smooth plastic, the image loses the information that justifies the exploded view.
Graphics are applied using the dieline as a guide, respecting folds and glue areas. Special finishes, such as spot varnish, cold foil stamping or embossing, are handled with gloss and height maps, so that they react to light just as they would on the manufactured box.
This is where the perception of finish is decided, an aspect we explore in packaging details and perceived quality. Take care over internal surfaces, which are often neglected: the inside of the lid or the back of the tray are also visible in an exploded view.
Light to separate planes and reveal the interior
Lighting an exploded view is harder than lighting a single object, because the parts cast shadows on each other and the interior falls into semi-darkness. A wide area light from above and slightly to the side adds volume, and a soft fill light keeps the cavities from closing into black.
Control the cast shadows: a lid suspended over the tray can hide exactly what you want to show. You can disable or soften the shadow of certain parts, or add lights that affect only one layer. With a transparent blister, it pays to manage the reflections so they don’t cover the product it holds.
The background works too: a neutral, graduated one separates light-coloured layers, while a photographic or AI-generated environment places the packaging in a commercial context. The choice depends on the final use of the image, not on taste.
Compose, review and deliver the final image
With the scene resolved, you choose the camera. A slightly elevated three-quarter view is the usual option because it shows the height of each layer and the interior at the same time; a camera with little perspective comes closer to the logic of technical drawing. Avoid very wide-angle lenses, which distort the closest parts.
Before calling the image done, review each layer with one question: is its function clear without a caption? If not, adjust the angle, the separation or the light. This same exploded view can later be used to validate ideas, as we explain in prototypes of new packaging formats, before committing to a mould.
If you prefer to delegate the process, our 3d rendering process starts from drawings, 3D models, CAD, prototypes or photos, including products not yet manufactured, and can be applied to packaging with colour and material variations.
An exploded view that mixes parts from different versions of the packaging, for example a tray from an old prototype with an already redesigned box, produces a good-looking but false image, and that inconsistency is usually spotted by the manufacturing supplier before the client. Confirm that all files correspond to the same version before you start rendering.
Frequently asked questions
Which files do I need to provide for an exploded packaging view?
Ideally the 3D or CAD model of each component, the dieline with high-resolution graphics and the material and finish references. If there is no model, drawings, a prototype or photographs are enough to rebuild the parts.
How many layers should an exploded view show?
Those that support the message of the image. If the goal is protection, show the insert, tray and product; if it is the opening experience, the lid, interior and contents are enough. Adding irrelevant layers dilutes the reading.
Can packaging that hasn’t been manufactured yet be shown?
Yes. With the design in CAD, drawings or even a detailed sketch, each component is modelled and rendered as if it already existed, which makes it possible to assess the packaging before manufacturing.
How do you render a transparent blister without it hiding the product?
The position of the lights and the reflected environment are adjusted so the highlights fall outside the key areas, and the material is given a realistic refractive index and thickness. That way the plastic is perceived without hiding what it holds.