Importance

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Abstract

A coreless paper roll manufacturing method includes: unrolling a wide tissue web from a parent roll; spraying adhesive on the wide tissue web; winding the wide tissue web on a winding mandrel to form a log roll; and cutting the log roll to form a plurality of paper rolls. The spraying includes depositing a first adhesive, having a bonding strength capable of solidifying the wide tissue web wound on the winding mandrel and separating a sheet of tissue from the solidified wide tissue web, on parts of the wide tissue web from which the wide tissue web starts to be wound, the parts including both ends of the wide tissue web in the width direction and positions at which the log roll is cut, and depositing a second adhesive having a lower bonding strength than the first adhesive on parts between the parts where the first adhesive is deposited.

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First Claim