I have made mention a number of times that the endcaps on the E-core filter is not glued to the element media. Of course others have claimed it is glue..
But now that I have some documentation, I'll explain how Champ seals the endcap to the element and what the other filter companies who have cut open the E-core already know.
The E-core filter has a "thermobonded" endcap.
So how is this done one might ask.
"This bonding technique has been around a number of years. High frequency vibration is directed into the non-woven filter media ( or the synthetic endcap material Champ uses. It's not felt!!). This vibration produces heat that causes the material to melt and fuse to the media.
Although no threads or adhesives are used, the fused bond is stronger and more reliable than that which can be produced by stitching, glue, or hot air. The bonding process requires seconds to seal. ( which is much faster than the curing of glues in an oven).
This technology is used to bond textiles, non-wovens, metals, and plastics. It is used in the filtration, apparel, automotive, appliance, HVAC, aerospace, medical, electronic, and electrical fields."
Now the above is from an article in an industry magazine I receive. What is in parenthesis is my bits and not part of the article.
Should anyone want a copy, send me a pm and i'll fax a copy to you. Of course this article is about a specific company who sells the bonding equipment. But it is the process by which Champ uses to make the E-core filter element. It is expensive because you need a purpose built production line to do it. However, there are some European and American filter companies using this technology to bond plastic endcaps to elements. The problem is you just haven't seen it in automotive filters over here....
So now the mystery is solved...
But now that I have some documentation, I'll explain how Champ seals the endcap to the element and what the other filter companies who have cut open the E-core already know.
The E-core filter has a "thermobonded" endcap.
So how is this done one might ask.
"This bonding technique has been around a number of years. High frequency vibration is directed into the non-woven filter media ( or the synthetic endcap material Champ uses. It's not felt!!). This vibration produces heat that causes the material to melt and fuse to the media.
Although no threads or adhesives are used, the fused bond is stronger and more reliable than that which can be produced by stitching, glue, or hot air. The bonding process requires seconds to seal. ( which is much faster than the curing of glues in an oven).
This technology is used to bond textiles, non-wovens, metals, and plastics. It is used in the filtration, apparel, automotive, appliance, HVAC, aerospace, medical, electronic, and electrical fields."
Now the above is from an article in an industry magazine I receive. What is in parenthesis is my bits and not part of the article.
Should anyone want a copy, send me a pm and i'll fax a copy to you. Of course this article is about a specific company who sells the bonding equipment. But it is the process by which Champ uses to make the E-core filter element. It is expensive because you need a purpose built production line to do it. However, there are some European and American filter companies using this technology to bond plastic endcaps to elements. The problem is you just haven't seen it in automotive filters over here....
So now the mystery is solved...
