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Business machine key caps

TitleBusiness machine key caps
Object NameBusiness machine key caps
DescriptionBusiness machine keys caps attached to runner as they were when removed from mold. This type of cap is widely used on typewriters, computers, and all kinds of other office machines. Two-color key caps were first produced during the Second World War by the double-shot injection molding process. With that process the first molded part was removed from a mold and placed into a second mold where the other color of material was molded into, or onto, the first part. Between the mid-1960s and mid-1970s key caps were automatically produced in a special multi-material injection molding machine equipped to mold both colors of plastic material. Today this multi-material injection molding process is used to produce all mid-to-large-volume, good quality key caps." In the early days good quality key caps were produced using cellulose acetate. Today good quality key caps are molded using ABS or polyester.
Dimensions7" length
MaterialAcrylonitrile Butadiene Styrene (ABS)
Manufacturing ProcessMulti-material Injection Molded
Number of Objects1
Accession Number2005.28b
DonorGift of National Plastics Center.
Broad SubjectComputers and Electronics
For More InformationPlease address inquires to the Public Services Librarian, Special Collections Research Center, Syracuse University Library (e-mail: scrc@syr.edu, tel. 315-443-2697).
RightsPublication of images from the Special Collections Research Center is subject to approval and fees may be charged for such use. Publication includes the following media: print, electronic/digital, videotape, film, or microfilm. Permission to use images must be obtained in advance and in writing from the Special Collections Research Center by writing to plastics@syr.edu or going to http://scrc.syr.edu . These fees are separate from any which might be assigned/assessed by the copyright holder.

 

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