| Share | |
|---|---|
| Categories | Custom Multi Color Silicone Case |
| Brand | FromRubber Silicone & Plastic OEM Manufacturer |
| Product Specifications | BH-silicone case |
| Design | Follow 3D Drawing Or Physical Object |
| Process | Molding |
| Feature | Lightweight Protection,Durable & Shock-Absorbent |
| MOQ | 1000pcs |
| Application | Earphone Charging Case |
| FOB port | FOB ShenZhen |
| Terms of Payment | L/C, D/A, D/P, Western Union, MoneyGram, T/T, Paypal |
| Download |  |
Most samples of this product fail in the same place: the eyelet. A character shell can look perfect in a 3D render and still tear at the carry point after eight weeks, because a hole in a flexible wall concentrates stress, and silicone has no yield point to absorb it.
We mould this earphone charging case as a two-part silicone shell with the eyelet, the hinge line and the port opening formed in the same tool. The artwork is what the buyer sees; the eyelet root, the split line and the shell grip are what keep the product in use.
Each one has a different failure mode. All four have to be resolved on the drawing, not in the moulding shop.
The wall around the hole has to carry the pull of a case plus earbuds swinging from a bag. Thickening the whole shell is the wrong answer: it stiffens the part and changes how it grips the device.
Typical failure: crack starting at the inner edge of the hole, running into the side wall. Fix is a filleted boss around the eyelet, local wall build-up and a gate position that keeps the weld line away from the root.
The lid line is the second wear point. It has to stay closed in a bag, open with one thumb, and not pinch the charging case seam when the shell flexes.
Typical failure: lid lifting, or the split line drifting across the artwork. Fix is split-line placement on a natural edge of the design plus a controlled land at the mating face.
Silicone ring, split ring, webbing strap and snap hook all pull differently. The eyelet inner diameter has to match the hardware you specify, not the hardware we happen to stock.
Typical failure: metal ring sawing through a soft eyelet, or a strap that will not pass the hole at all. Fix is matching hardness and eyelet section to the hardware before sampling.
The shell must hold the charging case without stretching it out of shape. Grip comes from the return at the open edge, not from making the whole part undersized.
Typical failure: shell slips off in a pocket, or the lid pops open on impact. Fix is a moulded return lip with a relief channel so air escapes when the case goes in.
These are the variables that change the mould, so they are agreed in writing before a sample is cut.
| Parameter | What you specify | Why it changes the tool |
|---|---|---|
| Device model | Charging case model, or a physical sample | Defines cavity, port position and lid arc |
| Shell build | Two-part shell with hinge line, one-piece sleeve | Two-part needs a split face and lid land |
| Carry point | Side eyelet, top eyelet, both, or none | Eyelet position drives gate and ejector layout |
| Hardware | Silicone ring, split ring, cord, snap hook, or supplied by you | Sets eyelet inner size and wall section |
| Hardness | Shore A 30–80, chosen against wall thickness | Soft grips better; firm holds the eyelet shape |
| Colour route | Tinted compound, separate moulded colour pieces, print, or a mix | Decides cavity count and assembly steps |
| Marking | Moulded-in logo, screen print, laser etch | Print and etch are post-cure operations |
| Tolerance | ISO 3302-1 M2 unless your drawing states otherwise | Sets inspection and sample approval |
Not quoted as stock: every run is tooled to your artwork and your device. We do not sell ready-made character cases from a catalogue.
Eyelet position, ring type and colour split are fixed per project. What follows is the same construction across three different programmes.
It depends on three things: the wall section at the root, the fillet radius, and which hardware passes through it. We size all three against the load you expect, then test the first samples by hanging the loaded case from the ring. If the root is thin, we change the tool rather than the material.
Yes, when the openings are drawn from the device model rather than copied from a similar case. Port cutouts are formed in the tool, so their position is fixed at sampling. Send the device model and we will mark the clearance you need for the plug body, not only the socket.
Both routes work. We can mould the silicone ring in the same colour as the shell, or leave the eyelet sized for hardware you supply. Mixed programmes are common: moulded ring for retail, metal split ring for promotional runs.
Moulded or set as separate moulded colour pieces that sit in the tool and bond during cure. We do not glue decoration onto a finished shell for this product type, because the bond line is the first thing to fail in a bag.
You get a DFM note on the eyelet, split line and port layout, plus a quote that separates tooling from piece price. If the shell needs a design change to survive daily carry, you hear it before tooling starts.
Related reading: what separates a good earphone cover from a disposable one.
