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Introduction to the basic knowledge of waterproof membrane


A waterproof membrane material, it can also be used in acoustic applications to provide a water and dust resistant pollution barrier with good sound wave transmission.

Protects against dust, splatter, common beverages such as soda and coffee for a short period of time and provides stress relief and balance.

Waterproof membranes provide a solution to protect the flow of vents used to control equipment pressure fluctuations due to temperature, altitude and sound pressure changes, and to vent battery exhaust without significantly restricting air exchange. When the high temperature resistance reaches 250°C, its low temperature resistance can be reduced to -196°C.

1. To prevent the intrusion of solid substances

❶ Protect solid foreign objects with a diameter greater than or equal to 50 mm. Protects objects with large surface areas, except hands.
❷ Protect solid foreign objects with a diameter greater than or equal to 12mm. Protects fingers or other objects up to 80 mm in length.
❸ Protect solid foreign objects with a diameter greater than or equal to 2.5mm. Protect tools, metal wires, etc. whose diameter or thickness is greater than 2.5mm.
❹ Protect solid foreign objects with a diameter greater than or equal to 1.0 mm. Protection of metal wires or strips with a thickness greater than 1.0 mm.
❺ Dustproof: In many cases, we cannot completely prevent dust from entering. The protective film can only allow a small amount of dust to enter, and the entry of a small amount of dust will not affect the normal operation of the device.
❻ Dust-tight means no dust ingress.

2. Prevent liquid intrusion

❶ Protection against water droplets (vertically falling water droplets) entering the device.
❷ Prevent splashing of water droplets. Arguably, vertically falling water droplets shouldn't do any damage.
❸ Prevent water from overflowing. Water splashed from vertical sides at an angle of 60 degrees shall not cause damage.
❹ Protect from water spray. When the equipment is tilted 15 degrees to the normal position, water sprayed precisely from any direction shall not cause damage to the equipment.
❺ Protected against water jets. Water spray directed at the equipment from any direction must not cause damage.
❻ Anti-big waves. Damage must not be caused by large waves or strong currents entering the device.
❼ Waterproof. When immersed in water under the specified pressure and time, there shall be no intrusion of water in an amount capable of causing damage.
❽ Prevent flooding. The device can be immersed in water for a long time under the conditions specified by the manufacturer.

Waterproof membranes are widely used in the field of precision electronics, such as our common mobile phone waterproof membranes, tablet waterproof membranes, TV waterproof membranes, etc. Because of the application field, the precision requirements for die-cutting are relatively high, and only high-quality die-cutting machines can Reaching high-precision die-cutting requirements will also reduce waste to a certain extent and save costs.
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