Composite material reinforcement materials. Another important factor is the gross quantity of material to be produced. Large quantities can be used to justify high capital expenditures for rapid and automated manufacturing technology. Small production quantities are accommodated with lower capital expenditures but higher labour and tooling costs at a correspondingly slower rate. Many commercially produced composites use a polymer matrix material often called a resin solution. There are many different polymers available depending upon the starting raw ingredients. There are several broad categories, each with numerous variations. The most common are known as polyester, vinyl ester, epoxy, phenolic, polyimide, polyamide, polypropylene, PEEK,
Sometimes I'm Happy (Sometimes I'm Blue) Sometimes I'm Happy (Sometimes I'm Blue) "Sometimes I'm Happy" is a popular song. The music was written by Vincent Youmans, the lyrics by Irving Caesar. The song was published in 1927 and introduced in the Broadway musical "Hit the Deck," starring Stanley Holloway, and opened in April 1927. The song was performed in the musical by Charles King and Louise Groody, who also made a recording for Victor Records, catalog number 20609. The best-selling versions were by King and Groody and by Roger Wolfe Kahn (with vocal by Franklyn Baur), also issued by Victor (catalog number 20599). Two other versions,