Closed cell cross linked polyethylene foam can always be one of the best foam gasket material. The polyethylene foam has two main categories – chemical cross-linked polyethylene foam and irradiation cross-linked polyethylene foam. The last on is better and more frequently applied as foam gasket for markets including medical, electronic devices, cosmetic packaging, automotive components, etc..
The irradiation cross-linked polyethylene foam gasket has good performance on physical properties.
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Smooth comfort surface with environment friendly finishing
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Premium resistance to moisture, weather and oil
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Excellent thermal and acoustic insulation
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Good elongation performance
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Available in wide range of densities and colors
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Closed cell structure for low water absorption and vapor transmission.
The irradiation cross-linked polyethylene foam gasket material has other flexibility. Thickness range is available from 0.08 mm to 8 mm. Other thicknesses can be custom made by foam lamination process. Also density can range from 28 kg/m³ to 300 kg/m³. Standard foam colors is white and black. Other colors can be customized including blue, green, red, orange and so on.
Customer Case – Foam Product Application
Here is the irradiation cross-linked polyethylene foam gaskets we have produced for our domestic market
customer. They will use this PE foam gasket material as cushion joint for their automotive parts. Our cross-linked polyethylene foam gasket works as cushioning part also for oil and fuel resistance. Due to their good elongation ability, they work well when the motor parts is functioning.
Here is the irradiation cross-linked polyethylene foam gaskets we have produced for our domestic market How We Make This Foam Gasket
The material for this foam gasket is irradiation cross-linked polyethylene foam with foam expansion ratio of 15 times and 65 kg/m³ of density. The gasket size is 130 mm x 98 mm x 1 mm with custom die cutting.
1) First we need to confirm with customer on product CAD drawings. The product CAD drawings is better to be provided by engineers from customer. On the other hand, if customer lacks of CAD design support, we can do that part of engineering design for customers’ product.
First we need to confirm with customer on product CAD drawings. The product CAD drawings is better to be provided by engineers from customer. On the other hand, if customer lacks of CAD design support, we can do that part of engineering design for customers’ product.2) After confirming the CAD drawing of foam gasket, we will make the steel die cutting mold according to confirmed drawings. Once the die cutting mold ready, our factory staff will arrange the mass production.
3) As for actual fabrication of this foam gasket material, we need to fulfill the below production process:
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Custom foam sawing
The original polyethylene foam is one kind of extruded foam gasket material. They come in roll not in sheet, our factory staff will need to using our vertical sawing machines to cut them in sheets. These cut polyethylene foam sheets must be at least the same size of the steel die cutting mold or larger.
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Adjust die cutter and install the die cutting mold to optimize cutting precision
install the die cut mold and make it well compatibly with die cutting machinery. This process of testing the mold will takes lost of time than customer usually thought. As for a precise cutting outcome, we will use some part of the foam material to make sure the steel mold is well installed. After this, the mass production can be approved to go.
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