Strips toothpaste

Have you ever wondered how the band is applied toothpaste? And some people are even afraid to buy striped toothpaste, not to think about it. But this is easier than it seems. The tube is filled with the material of the base, the actual toothpaste, which is usually white to a certain level. Above this level, the tube is filled with 'striped' weight, usually red, blue or green. Both materials are sufficiently viscous that they do not smeshivalis.

The trick is how to manage these two substances are not mixed during extrusion. The neck tube of toothpaste - it's not just a hole, it's a sort of elongated tube, the inside of which ends at the filling base material. This pipe has small holes close to the neck of the tube. Through them and gets 'striped' mass in the tube, which is the main material. And when you click on the tube base material fills the tube and squeezed with striped weight out without mixing.

Figure: Nozzle - the neck of the tube Carrier material (toothpaste) - the base material (the actual toothpaste) Start of outlet pipe - start outputting tube Holes in outlet pipe - the hole in the tube Striped toothpaste - striped toothpaste Some additional information - Since the striped mass of only a small fraction of the total toothpaste tube inside the tube should not be too long (typically several centimeters). - You can spoil the effect of the strips, pressing the tube very close to the neck, forcing the band to leave the main aisle. Or you can crush the tube so much that these two substances are completely smeshayutsya.

 - Company Lever (now Unilever) bought the patent for the technology of these bands from the tube at a New York inventor in the late 1950s. - Somewhere in the early 1960s, a new toothpaste, which was called 'Stripe' (in Russian - 'band') appeared in the US market. A few years later, in 1965, pasta was introduced in the UK, and later in Europe. In the second year of sales paste 'Stripe' market has reached 8%. However, it failed to hold these positions, and the number of manufactured striped toothpaste decreased. - New projects for the production of toothpaste with stripes of various shapes and colors have caused a lot of controversy among manufacturers in the late 1990s. - The strips are necessary for visual effect, but they can also contain various components. For example, the main component contains the 'soap' red line contains 'fluoride', and the other may contain mint flavor for 'freshness'. However, there is no strict need for the separation of these components.

Source: prochitano.ru/archives/3154