Name: 膠帶為什麼這麼結實？ (Why Is Duct Tape So Strong?)
Uploaded: 2021-01-14T08:03:16.000Z
Duration: 4 min 40 s
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But what makes duct tape so strong and versatile?

because of its water-resistant qualities.

and it used to be made out of a cotton duck fabric

But cotton duck fabric doesn't actually come from ducks.

where the threads make a crisscross pattern.

Known for being a strong material, the fabric was used

to protect power cables and electrical conductors

But the adhesive duct tape we know and love today

A factory worker who was packaging ammunition

sealed each box with tape and wax to make them waterproof.

When the worker, Vesta Stout, saw soldiers struggling

to open the boxes, she came up with an idea

to seal the boxes with a strong cloth-based waterproof tape.

Stout wrote a letter to FDR about her solution

that Johnson and Johnson would be manufacturing the tape.

It was durable and easy to apply and remove by hand.

After the war ended, duct tape turned up in hardware stores

ready to help Americans with household repairs, too.

It quickly became a useful tool for wrapping air ducts,

Duct tape used to be kind of a one-and-done silver tape

Our adhesive is specifically formulated to stick to

a whole variety of different surfaces, and then basically

the waterproof backing on top of that then protects

the adhesive once it's applied to a surface.

Narrator: There are three main components

Rubber for the adhesive, cloth, and backing.

and arrives at the factory in large bales.

with various sticky resins until it reaches

Then, the mixture is heated to over 200 degrees Fahrenheit.

The cloth, sometimes called the scrim, lies in between

the sticky rubber layer and that ubiquitous silver backing.

It's made from cotton and is a key part of the tape.

The cloth is what gives the tape its tensile strength.

It makes it easy to hand tear and keeps the tape stuck

the same plastic material used to make bags

that the backing can be incorporated into the tape:

The co-extrusion basically melds together the backing,

So it gives you a stronger tape that won't delaminate.

It's gonna be really good in different weather applications.

the strength of the cloth and the plastic-like nature

of the backing combine to give the tape the strength

The tape comes out in one jumbo roll that weighs over a ton.

Each giant roll can produce over 30,000 small rolls.

To get it to a smaller size, the roll is sliced into strips.

Finally, the tapes are placed in their final packaging,

Since its debut, duct tape has exploded in popularity.

Today, we use it to make flowers, bags, wallets,

science projects, and various DIY crafts.

Unlike your masking tapes, scotch tapes, painter's tape,

and other single-use tapes, duct tape has a long history

By simply putting fabric and adhesive together,

Vesta Stout may have created one of the most useful

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膠帶為什麼這麼結實？ (Why Is Duct Tape So Strong?)

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