What is Self-Amalgamating Tape (Magic Tape)?
What is Self-Amalgamating Tape?
Self-Amalgamating tape is a rubber tape that can adhere to itself without heat or glue/adhesive. It is non-tacky, and its unique and simple installation is what often earns it nicknames like “Magic Tape,” “self-fusing tape,” “self-vulcanizing,” or even “cold shrink tape.”
Self-Amalgamating tape works by pulling and stretching the tape so that as you place the stretched-out layer of tape over another layer of itself, the two layers interweave or “self-amalgamate.”
What Does “Amalgamate” Mean?
It makes sense to use the word “amalgamate” when describing this type of tape. “Amalgamate” is a verb that Dictionary.com defines the meaning to be..
“to mix or merge so as to make a combination; blend; unite; combine.”
When discussing “amalgamate” in terms of self-amalgamating tape we’re talking about how two or ore layers of tape combine, blend, or unite to become one solid piece.
How Does Self-Amalgamating Tape Work?
Self-amalgamating tape uses a chemical bond that results in two layers of the tape becoming a permanent bond, (also called vulcanizing). This is sometimes referred to as “cross-linking” and it happens on a molecular level. The tape is very easy and pliable when you first work with it but once the bond has begun, and as it is given time to set in, it becomes permanent to the point that it becomes like a mold that has formed around whatever it was applied to.
In the photo below you can see a good example of how self-amalgamating tape forms around what it is protecting. The photo shows a coaxial connector that had the tape applied to it, with the now removed/cut off tape next to it.
|
What is Self-Amalgamating Tape Made Of?
Our self-amalgamating tape, (Magic Tape), is made of Ethylene Propylene Rubber which makes it incredibly similar to EPDM used in many weatherproofing applications, including roofing. There are versions of self-amalgamating tape available in silicone and while we love silicone, Ethylene Propylene Rubber is more rugged and can better withstand the applications that many of our customers will often use Magic Tape for. Especially because the tape is being pulled and stretched it is more susceptible to tearing. Ethylene Propylene Rubber better withstands this type of use while still offering fantastic weatherproofing results.
A good example of this is in the marine/sailing market. It is common in the marine/sailing world to use self-amalgamating tape as “rigging tape” that protects sails, (and more), from chafe and sharp protrusions. In these instances, the tape is going to encounter a high amount of abrasion, and silicone self-amalgamating tape will not hold up in such conditions.
Unfortunately, silicone is not ideal for any type of self-amalgamating tape that may need to tightly wrap around something irregular or protruding. The fact that self-amalgamating tape needs to be stretched means that silicone-based tape will have very little tear resistance. Silicone does however have a higher voltage rating than Ethylene Propylene Rubber.
How to Install Self-Amalgamating Tape
No gloves or special tools are required to install self-amalgamating tape. The only thing(s) you will need are scissors or a blade to cut the tape to your needed length.
To keep the tape from adhering to itself Magic Tape comes with a protective, plastic peel-away layer that allows the tape to be rolled and shipped. To install the tape, you peel away a portion of this protective plastic layer, pull to stretch the portion of tape you intend to use, and wrap it around what you are attempting to protect. You then take another portion of the tape, pull to stretch it, and wrap it so that about half of it is overlapping the previous layer. Pulling the tape as you install it not only creates a tighter wrap but, more importantly, it helps the tape better amalgamate/adhere to itself as you wrap it.
|
As previously mentioned, self-amalgamating tape is often used in the marine/sailing market as “rigging tape,” where it protects sails, (and more), from sharp protrusions and chafe. Similarly, self-amalgamating tape has been used to provide more grip to bike handles, tennis rackets, walking sticks, tools and more.
Self-amalgamating tape is also used by plumbers to help repair leaks, or in the automotive industry to repair radiator hoses and the like. Self-amalgamating tape truly has an almost unlimited number of applications.
|
Conclusion
Self-amalgamating tape is truly an incredible product that is almost deceptively simple. It is so easy to use that it can be easy to disregard the chemical bonding process that allows it be so effective. With its lack of adhesive, incredible flexibility, not to mention it’s amazing longevity, self-amalgamating tape has an almost infinite number of uses.
How do you plan on using self-amalgamating tape? Let us know in the comments below!
