MODULAR CONSTRUCTION PATTERN ROLLS FOR USE IN PAPER CONVERTING AND PAPER CONVERTED THEREBY
The invention comprises a modular pattern roll for embossing a cellulosic fibrou s structure. The pattern roll is made by assembling separate components, rather th an being one piece and chemically etched according to the prior art. The pattern roll com prises a cylindrically perforate outer shell (...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | The invention comprises a modular pattern roll for embossing a cellulosic fibrou s structure. The pattern roll is made by assembling separate components, rather th an being one piece and chemically etched according to the prior art. The pattern roll com prises a cylindrically perforate outer shell (40) having radially extending protuberances (30) inserted through the holes in the cylindrical shell (4). The protuberances (30) are provi ded with an interference fit and/or, if desired, a shoulder (44) at the proximal end to prev ent the protuberances (30) from being extruded and expelled through the hole (42) and cr eating a missile hazard during operation. The center of the hollow cylindrically perforate shell is filled with a base roll (48) and a radially expanding internal locking assembly (64), to pre vent the protuberances (30) from moving radially inwardly under the compressive forces wh ich occur during operation. |
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