Fiber inserts for electrical parts: separation, not just cushioning
Electrical components arrive at the packaging stage with two needs that foam usually serves badly: they must not touch each other, and they must not deform the moulded housing they sit in. Fiber handles both, because cavities are pressed into the tray rather than cut after the fact.
Typical parts we mould for: breakers and contactors, switches and sockets, meters, junction boxes, small transformers, wiring accessories and plated terminals.
- One cavity per part - terminals and screw threads are held off adjacent parts, so a case of trays cannot short two units together.
- Ribbed support faces that carry the part on its structural surfaces instead of its cosmetic front.
- Wall thickness matched to mass - heavier metal-bodied parts get a denser, thicker pressed wall; moulded housings get a lighter wall that will not scuff.
- Moisture buffering - cellulose fiber naturally holds a small percentage of moisture, which stabilises humidity inside a closed case better than a dry polymer insert.
Fiber is also ESD-quiet when compared with a polymer insert that can hold a static charge, and it brings no metal or plastic parts into the pack. Because the tray is moulded, a single part can hold a mixed kit - body, screws, bracket and manual - in separate pockets.
MOQ is 10,000 pieces per design; tooling 7–15 days; production 15–25 days after sample approval. Send your part weights and packaging case dimensions, or see the rest of our fiber packaging range.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a manufacturer founded in Hong Kong in 2013, with two production bases in Dongguan, China and Ho Chi Minh City, Vietnam, and a total manufacturing area of 26,000 square meters. You are welcome to visit or audit our factory.
Q: What is your MOQ for custom molded fiber packaging?
A: Our standard MOQ is 10,000 pieces per design. If your project requires a different quantity, contact us at info@csl-packaging.com and we will review the options with you.
Q: What is the production lead time?
A: Lead time is generally 15-25 days after sample approval, depending on order quantity and technical difficulty. The exact schedule is confirmed together with your order.
Q: Is molded fiber packaging safe for direct food contact?
A: Yes. Our food-grade molded fiber trays are produced from virgin plant fiber and comply with food-contact requirements. Please tell us your destination market when requesting a quotation, and we will confirm the applicable compliance documents (for example FDA or EU 1935/2004).
Q: Are your molded fiber food trays PFAS-free?
A: Yes. We offer PFAS-free, plastic-free molded fiber trays with water and oil resistance achieved through fiber selection and forming process, rather than fluorochemical coatings.
Q: Can you produce trays in custom shapes and compartment layouts?
A: Yes. We custom-mold trays to your product dimensions and required compartment layout, based on your 3D drawing or physical sample. Samples are provided for approval before mass production.
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