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2. Plastic welding - Wikipedia

   en.wikipedia.org/wiki/Plastic_welding

   Hot gas welding, also known as hot air welding, is a plastic welding technique using heat. A specially designed heat gun, called a hot air welder, produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic. (Welding PVC to acrylic is an exception to ...

3. Radio-frequency welding - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_welding

   Radio-frequency welding, also known as dielectric welding and high-frequency welding, is a plastic welding process that utilizes high-frequency electric fields to induce heating and melting of thermoplastic base materials. [1] The electric field is applied by a pair of electrodes after the parts being joined are clamped together.

4. Ultrasonic welding - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_welding

   Ultrasonic welding does not damage surface finish because the high-frequency vibrations prevent marks from being generated, which is a crucial consideration for many car manufacturers, . [10] Ultrasonic welding is generally utilized in the aerospace industry when joining thin sheet gauge metals and other lightweight materials.

5. Joel Embiid returns after 7-game absence with 31 points in ...

   www.aol.com/sports/joel-embiid-returns-6-game...

   In five games this season, Embiid is averaging 22 points, 8.4 rebounds and 1.2 blocks. Sunday was a rare game in which Philly's "Big Three" of Embiid, Tyrese Maxey and Paul George played together ...

6. Alcohol deaths have more than doubled in recent years ...

   www.aol.com/news/alcohol-deaths-more-doubled...

   From 1999 to 2020, the number of alcohol-related deaths has nearly doubled, according to Florida Atlantic University study. A researcher and addiction specialists discuss the risk factors.

7. 4 planes collide in 2 separate tarmac crashes at Boston Logan ...

   www.aol.com/4-planes-collide-2-separate...

   An already hectic holiday travel day was made more chaotic with two separate plane collisions on the tarmac at Boston Logan International Airport just hours apart on Monday.