Custom Silicone Sleeve
Custom Silicone Sleeve also called as Silicone Sleeve, Soft Silicone Sleeve, Silicone Sleeve for Bottle, Rubber Sleeve, Silicone Boot, Silicone Bottle Sleeve, Water Bottle Cover, Silicone Case, Silicone Protective Cover, which is made of silicone rubber by compression molding, silicone transfer molding, liquid silicone injection molding with horizontal stripe according to different structure.
Silicone Sleeve with different structure will have different mold layout and parting lint/joint line. Usually we will draw the parting line for customers checking whether that's acceptable. Especially for silicone silicone/cover, the appearance is very important.
Compression molding is enough for silicone bottle sleeve for production, while with large quantity production, the parting line of silicone sleeve will become larger and larger. The main reason is the mold steel is not good enough, and the hardness of the steel is low, so with time going, the mold is not as precise as before, and parting line becomes larger.
So we will choose silicone transfer molding and liquid silicone injection molding for production if the quality requirement is high and with large quantity.
What the difference between compression molding, silicone transfer molding and liquid silicone injection molding?
Precision Degree: Liquid Silicone Injection Mould > Silicone Transfer Mold > Silicone Compression Molding
Soft Silicone Sleeve can also choose Silicone transfer molding. Because Silicone Transfer Molding is a better choice for small pipe product, such as silicone bellow, silicone sleeve, cover bellows. For these small pipe hole product, need small and slim mold cores, if the solid silicone material on the mold cores is heavy, the mold core is fragile and will damage easily.
For Silicone Transfer molding, the material is putted into the pot rather than to the mold core directly. When the mold plate close, the raw material will transfer to cavirties through pot runner and sprues under high pressure and temperature. And also the rubber transfering will not effect metal piece’s location, and will not cause uneven thickness problems compared to compression molded syringe sleeves the material is place by hand.
Custom Silicone Sleeve by sicone Transfer molding is precise tolerance can be less than 0.05mm. And parting line is smaller.
Mold Cost and Unit Cost: Liquid Silicone Injection Mould > Silicone Transfer Mold > Silicone Compression Molding
Silicone Transfer mold is an economic choice compared to liquid silicone injection molding
Liquid Injection Mold conatains cold runner system, needle valves, and the mold structure is much complicated, the mold cost is much expensive than Silicone Transfer injection molding.
The mold plate mold core of liquid silicone injection mould is smaller than transfer molding plate. LSR injection molding can not contains as much cavities as Silicone Transfer have.
Material Waste: Silicone Transfer Mold > Liquid Silicone Injection Mould > Silicone Compression Molding