epp foam
Topsun
30g/l-110g/l
Customize
Product Description
Topsun supplies custom molded EPP car accessories for trunk storage, vehicle tool organization, spare wheel compartments, under-floor storage, luggage floor support and other automotive interior applications.
Expanded Polypropylene foam combines low weight, resilience, cushioning and three-dimensional molding capability. It can be shaped around vehicle-specific installation spaces while incorporating dedicated cavities for jacks, towing eyes, wheel tools, inflators, emergency kits and other accessories.
Topsun's current automotive EPP range covers densities from 30 g/L to 110 g/L. Finished dimensions, cavity layout, support geometry and external contours can be customized according to vehicle drawings, accessory samples, installation-space data and functional requirements.
| Property | Specification |
| Product Type | Custom Molded EPP Automotive Accessories |
| Material | Expanded Polypropylene / EPP |
| Density | 30–110 g/L |
| Existing Product Color | Black |
| Size | Customized |
| Geometry | Customized According to Vehicle Installation Space and Stored Accessories |
| Typical Products | Trunk Tool Trays, Tool Caddies, Spare Wheel Organizers, Floor Supports, Spacers and Cargo Inserts |
| Development Input | 2D Drawing, 3D CAD, Vehicle Data, Accessory Samples, Photographs or Physical Reference Parts |
Lightweight construction: EPP provides useful structural volume while adding relatively little weight to luggage-compartment assemblies.
Vehicle-specific molding: the external profile can be shaped around trunk floors, spare wheel wells, trim panels and other irregular vehicle structures.
Dedicated tool cavities: molded recesses can locate vehicle tools and accessories in defined positions.
Cushioning: the cellular structure helps separate stored tools and accessories and reduce direct contact between components.
Resilience: EPP provides useful recovery after suitable compression and repeated handling.
Trunk floor support: molded components can fill irregular under-floor spaces while supporting suitable luggage-floor structures.
Integrated storage: support, spacing and storage functions can be combined in a single molded component where the design permits.
Custom density: different densities can be evaluated according to stored-item weight, support requirements and finished geometry.
EPP foam car accessories are molded components used to organize, locate, cushion or support items inside vehicle trunks, luggage compartments and other interior storage areas.
Unlike a universal storage box, a custom molded EPP accessory can be designed around the exact architecture of a vehicle platform. The outer geometry can follow the available trunk or under-floor space while the internal geometry is developed around the actual tools and accessories that need to be stored.
This allows one component to combine storage cavities, locating features, spacing and suitable floor-support functions while using otherwise irregular or unused vehicle space.
One of the main automotive applications for molded EPP accessories is a vehicle-specific trunk tool organizer.
Dedicated cavities can be designed for individual tools and service accessories so each item has a defined position inside the luggage compartment.
Typical stored items can include jacks, wheel wrenches, towing eyes, inflators, tire-repair equipment and other vehicle-specific accessories. The exact layout should be developed from the actual items or accurate dimensional information.
Separating and locating these items can help prevent direct contact and unnecessary movement during vehicle operation while keeping emergency equipment organized and accessible.
EPP tool trays can be molded with multiple cavities of different shapes and depths according to the tool kit supplied with a vehicle.
A custom layout can position each item individually and make efficient use of available space beneath the trunk floor, beside the spare wheel or within another designated storage area.
Customers should provide the actual tools, CAD data, drawings or accurate dimensions of every item that needs a dedicated cavity.
The spare wheel area can provide useful storage space for emergency tools and vehicle accessories.
Custom molded EPP organizers can be evaluated for installation around or within the spare wheel compartment, depending on the available vehicle geometry.
The external profile should match the wheel well and surrounding vehicle structure, while the internal cavities can be arranged around tools, towing equipment, inflators or other accessories.
EPP can also be molded into lightweight structures positioned beneath the luggage-compartment floor.
These components can fill irregular spaces, compensate for differences in underlying vehicle geometry and provide suitable support beneath the trunk floor when designed for the required loading conditions.
Where space allows, the same component can also incorporate storage cavities, allowing support and organization functions to be combined.
The expected floor load, support locations, component thickness and vehicle geometry should be provided so the finished part can be evaluated for the intended application.
Under-floor vehicle storage often involves irregular spaces that are difficult to use efficiently with generic containers.
Molded EPP allows the outer component to follow the available body and trim geometry while internal compartments are arranged according to the items that need to be stored.
This approach is suitable for vehicle-specific storage systems where low weight, organized cavities and efficient use of available space are important.
| EPP Accessory | Typical Function |
| Trunk Tool Tray | Positions vehicle tools and accessories in dedicated molded cavities. |
| Tool Caddy | Organizes maintenance, emergency and roadside equipment. |
| Spare Wheel Organizer | Uses spare-wheel compartment space for vehicle-specific tool and accessory storage. |
| Trunk Floor Support | Provides lightweight support beneath suitable luggage-compartment flooring. |
| Under-Floor Spacer | Compensates for irregular underlying vehicle geometry. |
| Cargo Organizer | Separates selected accessories or cargo within a defined luggage-compartment area. |
| Protective Insert | Cushions and locates vehicle equipment or accessories inside custom compartments. |
| Vehicle-Specific Storage Insert | Uses customized three-dimensional geometry to fit a designated vehicle storage area. |
One of the main advantages of a molded EPP tool organizer is that individual cavities can follow the shape of the items stored inside the vehicle.
| Stored Item | Information to Provide |
| Vehicle Jack | Overall dimensions, orientation and actual part or 3D data where available. |
| Wheel Wrench | Length, width, shape and required locating position. |
| Towing Eye | Component geometry and desired storage orientation. |
| Inflator | Overall size, cable or hose space and access requirements. |
| Tire Repair Kit | Package dimensions and required cavity arrangement. |
| Emergency Accessories | Item dimensions, quantity and access requirements. |
Different cavity depths, separators, locating surfaces and access areas can be evaluated according to the stored items and the available installation space.
Automotive trunk geometry varies significantly between vehicle platforms, so an EPP organizer should normally be developed for a defined installation location rather than treated as a universal accessory.
| Vehicle Input | Why It Matters |
| Maximum Available Length | Defines the usable component envelope. |
| Maximum Available Width | Controls fit between surrounding trim and vehicle structures. |
| Available Height | Important for under-floor clearance and trunk floor position. |
| Spare Wheel Geometry | Defines organizer geometry where the component surrounds or sits inside the spare wheel area. |
| Vehicle Body Features | Recesses and local structures may require matching external contours. |
| Trim Geometry | Affects final fit and accessible storage area. |
| Trunk Floor Position | Important when the EPP component also provides floor support. |
| Critical Mating Surfaces | Identifies surfaces requiring close dimensional coordination. |
In suitable vehicle designs, an EPP trunk component can perform more than one function.
Storage cavities can organize tools or accessories while other areas of the molded component provide spacing or support beneath the luggage-compartment floor.
This type of multifunctional component should be developed according to the actual loading points, trunk-floor construction, cavity geometry and available support surfaces.
Where structural support is required, customers should identify expected loading conditions and critical support areas for project evaluation.
Topsun's existing automotive EPP range covers densities from 30 g/L to 110 g/L.
Lower-density EPP can help minimize component weight, while higher-density material can provide greater firmness and support where the organizer carries heavier accessories or contributes to trunk-floor support.
Density should be evaluated together with component dimensions, cavity geometry, wall sections, stored-item weight and required support conditions.
The correct density should therefore be selected from the complete accessory design rather than by density alone.
| Comparison | Molded EPP Accessory | Rigid Plastic Component |
| Structure | Lightweight cellular structure | Solid or hollow rigid plastic construction depending on design |
| Cushioning | Cellular material can cushion stored accessories | Typically more rigid around stored items |
| Tool Cavities | Can be molded around actual tool and accessory geometry | Can also use molded cavities depending on component design |
| Irregular Trunk Space | Can be developed as a lightweight three-dimensional space-filling component | Fit depends on the rigid component design and available packaging space |
| Floor Support | Can combine spacing, support and storage functions in suitable designs | Support function depends on the structural design |
| Stage | Project Input |
| 1. Accessory Definition | Define tool tray, spare wheel organizer, floor support, spacer or other accessory type. |
| 2. Vehicle Space Review | Confirm the available length, width, height and surrounding vehicle geometry. |
| 3. Stored Item Review | Review actual tools, accessory samples, drawings or dimensions. |
| 4. Cavity Layout | Develop suitable positions, orientations and access areas for each stored item. |
| 5. Support Review | Identify floor-support or spacing requirements where applicable. |
| 6. Density Selection | Evaluate density according to geometry, stored-item weight and support requirements. |
| 7. Tooling Development | Develop dedicated tooling according to the approved component geometry. |
| 8. Sample Evaluation | Check vehicle fit, accessory fit, cavities, critical dimensions and support areas. |
| 9. Production | Proceed with approved molded EPP accessory production. |
Accessory type: trunk tool tray, tool caddy, spare wheel organizer, floor support or other component
Vehicle model or project platform where applicable
Installation location
Maximum available length, width and height
3D CAD or 2D vehicle/component drawing if available
Photographs of the installation space
Spare wheel dimensions if applicable
Actual tools or accessory samples
Dimensions or CAD files for every stored item
Required item orientation and cavity layout
EPP density if already specified
Floor-support requirements where applicable
Expected load or stored-item weight
Critical mating and locating surfaces
Prototype or sample quantity
Estimated annual production quantity
A custom EPP car accessory should be evaluated against both the vehicle installation space and the items it is designed to store or support.
| Evaluation Item | Typical Check |
| External Fit | Confirm fit within the intended trunk, spare-wheel or under-floor area. |
| Tool Fit | Confirm each stored item fits its intended cavity and can be accessed. |
| Critical Dimensions | Check dimensions that affect installation or storage layout. |
| Cavity Geometry | Confirm depth, position and separation of stored items. |
| Trunk Floor Fit | Confirm compatibility with the luggage-compartment floor where applicable. |
| Support Areas | Evaluate customer-defined support requirements where the component carries a load. |
| Assembly Clearance | Check surrounding vehicle trim and adjacent components. |
In addition to molded EPP automotive accessories, Topsun supplies and processes multiple foam materials for customized automotive, packaging and industrial applications.
1. Cutting: foam materials can be cut according to customer dimensions.
2. Slicing: foam materials can be sliced to the required thickness for suitable applications.
3. Lamination: hot-melt film, flame and pressure-sensitive adhesive lamination are available for suitable materials.
4. Laser Cutting: customized shapes can be produced according to digital drawings for suitable foam materials.
5. Die Cutting: pads, gaskets, inserts and repeatable custom foam components can be produced according to project designs.
6. Compression Molding: three-dimensional molded foam and foam-composite components can be manufactured for suitable applications.
7. Engraving: suitable for tool-box inserts, protective packaging inserts and customized foam components.
8. Silk-Screen Printing: logos and patterns can be printed on suitable foam surfaces.
9. Adhesive Backing: adhesive and release liner can be applied to suitable foam materials.
Topsun supplies EPP, EVA foam, PE foam, XPE foam, IXPE foam, CR foam, EPDM foam, neoprene foam, SBR foam, NBR foam and micro-cell soft PVC foam for automotive, industrial, packaging and equipment applications.
Topsun supplies molded EPP parts and customized foam components for automotive and industrial buyers. Vehicle-specific EPP trunk organizers and tool trays can be evaluated according to installation-space data, drawings, stored-item dimensions, samples and functional requirements.
Our facility is located in Changzhou City, Jiangsu Province, China, with convenient access to Shanghai Port for international shipments.
EPP foam car accessories are molded Expanded Polypropylene components used for trunk storage, tool organization, spare wheel compartments, under-floor storage, trunk floor support and other vehicle interior applications.
Typical products include trunk tool trays, tool caddies, spare wheel organizers, under-floor storage inserts, luggage-floor supports, spacers, cargo organizers and custom protective inserts.
EPP combines low weight, resilience, cushioning and three-dimensional molding flexibility. The outer geometry can fit irregular trunk spaces while internal cavities organize specific tools and vehicle accessories.
Yes. Cavities can be developed according to the dimensions and geometry of jacks, wheel tools, towing accessories, inflators and other equipment. Actual samples, CAD data or accurate dimensions are useful during development.
Yes. A custom organizer can be evaluated for installation around or within the spare wheel area. The wheel geometry, available compartment dimensions and stored accessories should be provided.
Yes. Molded EPP can be used as an under-floor spacer or support where the component geometry and loading conditions are suitable.
In suitable designs, storage cavities and support surfaces can be integrated into the same molded component. The expected load and support locations should be identified during development.
Topsun's current automotive EPP range covers densities from 30 g/L to 110 g/L. The appropriate density depends on component dimensions, stored-item weight, support requirements and finished geometry.
No. Density should be selected according to the required balance of component weight, firmness, cushioning, support and geometry. Higher density is not automatically the best choice for every organizer.
Yes. Molded EPP accessories can be developed around vehicle-specific trunk, under-floor or spare wheel dimensions. Customers should provide accurate installation data or engineering drawings where available.
Yes. A 3D CAD model of the vehicle space or finished component is particularly useful for evaluating complex external contours and internal cavity layouts.
Actual tools or reference samples can be used as project information. Vehicle installation dimensions and other engineering data may still be required to develop the complete organizer.
Dedicated molded cavities can separate and locate tools, helping reduce unnecessary movement and direct contact between stored components. Final performance depends on cavity fit, item geometry and vehicle conditions.
A custom three-dimensional molded EPP organizer generally requires dedicated particle-foam molding tooling based on the approved finished-component geometry.
Typical checks include vehicle fit, external dimensions, tool fit, cavity positions, access to stored items, mating surfaces, trunk-floor fit and customer-defined support requirements.
Please provide the accessory type, installation dimensions, vehicle or component drawing, stored-item dimensions or samples, required cavity layout, EPP density if known, support requirements and estimated quantity.
Send your project information to july@topsunfoam.com, including the vehicle installation area, dimensions, drawing or sample, stored tools, density if known and estimated quantity for evaluation.
