Stationery Products
There have been numerous opportunities for male/female rotary punching of stationery products since T&P began in 1955. The most common applications are the 3, 5 or 7 ring binder pages, wire bound note paper such as GBC and Velobind, as well as the multitude of file hole applications such as purchase orders, memos, etc.

Petty Printing Punch Unit
45" wide tooling for punching 3 ring binder pages, 3 across on a Baldwin rotary press.

T&P recently became involved with one of the most respected names in the converting machinery industry, Ben Bunch Company, who is a manufacturer of fanfolding systems. Bunch's customer, a well-known producer of daily planning diaries, needed specialized tooling to produce a series of very small round holes spaced closely together in order to simulate a perforation. This perforation was to be placed in the corner of each page, some at 45-degree angles and some in a curved pattern, to allow the user to tear off the corner of each page as it was used.

Several different page sizes required unique tooling for each design. In all, over 10 sets of tooling were required. The design requirement would have normally indicated using a solid format, cylinder type punch and die unit to hold all the various punches and dies. However, in this case, Bunch was producing a processor with its own shaft type punch unit. Therefore, it was left to the engineers at T&P to develop the highly precise and very small tooling on a split format, (aluminum punch and die shell) which would then fit onto the Bunch processor. All of the punch and die tooling, including the intricately designed punch holders, were produced on T&P's 4-axis CNC machine tools. Most of the P/D shells had over 200 holes each, and one design required 272 holes! While most of the punching that T&P's equipment performs is with larger holes, it is possible to produce smaller holes such as these for the daily planning booklets.

If your custom application requires small holes, give T&P's engineers a call and give us the opportunity to solve your punching problem.

 

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