How Custom Silicone Molds Are Packed & Exported from Shenzhen
Custom silicone mold packing and export from Shenzhen - carton specs, cavity protection, MOQ 50 shipment weights, Incoterms, and what RUUIPON documents for import clearance.
Kyler Yang · Founder5 min read
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Silicone trays warp in a crushed carton - and importers lose days disputing damage that proper nesting prevents. RUUIPON ships custom silicone molds worldwide from Shenzhen at MOQ 50 with production in ~2-4 weeks after sample approval. This guide covers how molds are packed, what documents ride with the shipment, and what to check on receipt.
Quick answer: Production trays ship nested flat or stacked with PE sleeve + foam tier pads; outer cartons target 5-ply corrugated with corner crush rating suited to 15-25 kg per carton; commercial invoice lists silicone mold HS code, material (platinum silicone), cavity count, and unit value for customs - not "plastic samples."
Why Packing Is a Mold Spec
A 16-cavity resin sheet at Shore A 30 flexes during demold - it also flexes when a 20 kg box lands on one corner in LAX sorting. Packing is part of dimensional QC, same as wall thickness 2.5-5 mm and cavity spacing 8-20 mm.
| Pack element | Purpose |
|---|---|
| PE bag per tray | Prevents dust and scuff on gloss cavities |
| Foam sheet between tiers | Distributes stack load; protects thin webs |
| Flat pack orientation | Reduces cupping vs vertical single-tray mailer crush |
| Desiccant (optional) | Long sea legs in humid lanes |
| Photo record | Pre-close carton photo for damage claims |
Pre-Ship QC & Nesting Order
Before pack, each MOQ 50 batch passes the same bench checks as sample approval:
- Flash trim - no raised parting line on lip. Flash QC.
- Visual vs signed sample - finish, logo depth, spacing.
- Count & revision stamp - cavity count and CAD rev on packing list.
- Mix batch log - platinum cure ratio and degas record on file.
Large single-cavity molds may ship in individual boxes within a master carton. Multi-cavity sheets nest up to 4-8 tiers depending on tray stiffness (Shore A 35+ stacks better than Shore A 20).
Inner Pack & Cavity Protection
| Tray type | Typical inner pack |
|---|---|
| Flat multi-cavity sheet (6-24) | PE sleeve + foam pad top/bottom |
| Deep resin mold | Bubble wrap cavity face + rigid insert |
| Chocolate bonbon sheet | Flat stack max 6 high with foam interleave |
| Two-part mold set | Band paired halves; keys aligned; separate bag |
| Prototype only (1-4 cavity) | Rigid small box inside express mailer |
Prototype packs in 3-7 days often use rigid mailers for DHL/FedEx - production MOQ 50 uses export cartons. Prototype workflow.
Carton Specs, Weights & MOQ 50 Math
Silicone density ~1.1-1.3 g/cm³ - a thick 12-cavity tray can weigh 400-800 g. Fifty trays rarely fit one carton.
- Typical split - 2-4 cartons per MOQ 50 order depending on tray size.
- Weight band - 12-22 kg per carton common for air freight chargeable weight.
- Labeling - PO number, tray name, qty per carton, "non-stackable" if single-tier fragile.
- FBA inbound - sellers may request relabel per carton for Amazon. Amazon FBA molds.
Lead time: lead time explained. Import overview: importing from China.
Export Documentation
Documents that clear customs and satisfy your broker:
| Document | Contents |
|---|---|
| Commercial invoice | Description " platinum silicone mold," qty, unit price, total |
| Packing list | Carton count, dims, gross/net weight per carton |
| HS code | Typically 3926.90 or local equivalent - broker confirms |
| Material statement | Platinum-cure silicone; food-grade docs if ordered |
| Tracking | Air: AWB; Sea: B/L copy when available |
Food-contact orders: attach FDA/LFGB supplier summary when available. FDA vs LFGB. Not toy silicone - platinum vs tin.
Air vs Sea & Incoterms
| Mode | Typical use | Transit (indicative) |
|---|---|---|
| Express air (DHL/FedEx) | Prototype, urgent MOQ 50 | 3-7 days door-to-door |
| Air freight consolidated | Production 50-200 trays | 7-12 days + customs |
| Sea LCL | Large reorders, flexible date | 25-40 days |
Incoterms: EXW Shenzhen, FOB Shenzhen, DAP/DDP to buyer country - specify on quote. DDP simplifies small business receipt; FOB if you have a freight forwarder. Small business guide.
Receive, Inspect & Claim Window
- Photo cartons before open - crush corners are carrier evidence.
- Count vs packing list - short cartons within 48 hr of delivery.
- Inspect 2 trays per carton - web tears, cavity crush, gloss scuff.
- Test pour on one tray - confirm release before bulk production use.
Damage tied to pack failure is rare when foam tiers are spec'd - most transit issues trace to carrier crush on under-boxed single-tier stacks. Quote pack requirements on PO. [email protected] | Contact RUUIPON | WhatsApp +86 135 3006 2969.
Frequently Asked Questions
Can I request retail-ready packaging?
Yes - PE sleeve + header card or color box adds cost; spec on quote for MOQ 50.
Are molds shipped with release agent applied?
No - food trays ship clean; resin buyers apply per release guide.
Customs duty on silicone molds?
Varies by country - broker uses HS code and declared value; mold tooling is not "finished goods."
Split ship two warehouses?
Possible with carton-level packing lists; add handling fee.
MOQ per shipment?
Production MOQ 50 per design; partial ship of approved batch by arrangement.
Prototype pack different?
Yes - rigid mailer or small box; 3-7 days express typical.
What to send for export quote?
CAD, qty, destination ZIP, Incoterm preference. How to order.
Ready to order custom silicone molds?
Free quote for OEM/ODM projects. MOQ 20 · Prototype 3-7 days · FDA/LFGB available.