What is a mold component "date stamp" ?

Date stamp is an injection mold component used for traceability of plastic items such as automotive parts, plastic toys etc... It is a cylinder shape metal and composed of an outer ring and an inner arrow. The inner arrow can turn to indicate different positions of a character on the outer ring. The mark of a date stamp looks like a clock with characters to show such as manufactured date, lot numbers and types of plastic material etc... Date stamps mark during injection process so it is an easy and cheap way to directly mark on plastic products.
Uratani Shoji co., ltd. has been manufacturing a variety of high quality date stamps for more than 30 years.