Abrasive wiping articles and a process for preparing such...

Details Abrasive wiping articles and a process for preparing such... Abrasive wiping articles and a process for preparing such...

A - Human Necessities

47

L

A47L 13/17 (2006.01) B24D 3/28 (2006.01) C11D 11/04 (2006.01) C11D 17/04 (2006.01)

Patent

CA 2129244

Disclosed are abrasive wiping articles, e.g., nonwoven, preferably paper towels, which comprise an absorbant nonwoven substrate having printed thereon a cured scrubbing bead mixture which comprises a) certain carboxylated, ionically-charged polymeric abrasive particles, b) a carboxyl group-containing polymeric adhesive material, and c) an amino-epichlorohydrin, e.g., Kymene ~ cross-linking agent. The polymeric abrasive particles range in size from about 20 to 400 microns and have a knoop hardness of from about 4 to 25. The polymeric adhesive material, upon curing, has a Knoop hardness of from about 0.5 to 17. Preferred wiping articles of the foregoing type have a pattern of the scrubbing bead mixture printed onto from about 20 % to 70 % of the surface area of a paper substrate with the abrasive particles affixed to the substrate in such a manner that their exposed portion extends for a distance of from about 40 to 300 microns above the surface of the paper substrate. Wiping articles of this type are especially useful for removing soil and stain from hard surfaces with the polymeric scrubbing particles thereon being especially resistant to removal during use. Also disclosed is a process for preparing abrasive wiping articles as hereinbefore described. Such a process involves printing a pattern of the scrubbing bead mixture onto the paper substrate, drying the printed substrate and then curing the solid components of the scrubbing bead mixture to affix the abrasive scrubbing particles to the substrate. Curing of the particular scrubbing bead mixture employed can take place at room temperature.

Description d'articles d'essuyage abrasifs comme les non-tissés, de préférence des essuie-tout. Ces articles sont constitués d'un support non-tissé absorbant imprimé d'un mélange de particules de frottage polymériques comprenant : a) certaines particules abrasives carboxyles de polymérisation ionique; b) un matériau adhésif polymérique contenant un groupe carboxyle; c) un amino-épichlorhydrine comme, par ex., un agent de réticulation de Kymene ~. Les particules abrasives polymériques varient en dimension d'environ 20 à 400 micromètres, et ont une dureté Knoop d'environ 4 à 25. Le matériau adhésif polymérique, après la polymérisation, a une dureté Knoop d'environ 0,5 à 17. Les articles d'essuyage préférés du type ci-dessus possèdent un motif de particules de frottage imprimé sur environ 20 à 70 % de la surface du support de papier. Les particules abrasives sont fixées au support de façon à ce que leur partie exposée s'étende sur une distance d'environ 40 à 300 micromètres au-dessus de la surface du support de papier. Les articles d'essuyage de ce type sont spécialement utiles pour enlever des salissures et des taches sur des surfaces dures, grâce à leurs particules de frottage polymériques particulièrement résistantes. Un processus de préparation de tels articles d'essuyage abrasifs est également décrit. Il comprend l'impression d'un motif de particules de frottage sur le support de papier, le séchage du support imprimé ainsi que la polymérisation des composants solides du mélange de particules de frottage, afin de fixer les particules de frottage abrasives au support. La polymérisation de ce mélange distinct de particules de frottage peut s'effectuer à température ambiante.

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