| 摘要 |
Stiff flexible items, such as plastic credit cards, are inserted within four angled corner slits in respective mailer cards forming part of a burstable continuous form. A ram passes perpendicularly through a circular aperture in each mailer card and forces the credit card against a stationary anvil to bow the central section in a forward direction and concurrently cause the extended ends of the credit card to move rearward into contact with the mailer card to spread the slits. When the ram is retracted, the credit card, due to its inherent resiliency, snaps straight; as it does so, its four corners tuck into the slits around the aperture. Credit cards are mounted one or two to a mailer card automatically as they are advanced intermittently, first transversely of the continuous form to a merge position and then in the same direction as the continuous form to a mounting position.
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