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sankar
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 Posted: Fri Nov 24, 2006 10:18 am Post subject: How the ballpoint pen tops/caps are made to fit the body? |
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| Please tell me how ball point pen tops are made. Pls explain me with the manufacturing process |
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Guest
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| Posted: Tue May 19, 2009 8:28 pm Post subject: Re: How the ballpoint pen tops/caps are made to fit the body |
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| what are the main ingrediant of the ball point pen |
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ChristinLang
Joined: 13 Aug 2009
Posts: 1
Location: United States
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| Posted: Thu Aug 13, 2009 12:22 pm Post subject: |
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| Various colored juices, extracts, and suspensions of substances from plants, animals, and minerals also have been used as inks, including alizarin, indigo, pokeberries, cochineal, and sepia. For many centuries, a mixture of a soluble iron salt with an extract of tannin was used as a writing ink and is the basis of modern blue-black inks. |
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Cheng
Guest
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| Posted: Sun May 16, 2010 1:20 pm Post subject: How ballpoint pen tips are inserted |
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I suppose the body of the tip is heated so that the metal will expand. As soon as the ball is inserted, it is cooled to room temperature so that it will shrink again. This is similar to the principle of bolting airplane parts.
Cheng |
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