Method and apparatus for making a cleaning sheet
OwnerScott Tuman, Thomas Haskett +3inventors
InventorsScott Tuman, Thomas Haskett, Linda Suszko, Diane Wolk, Kim Sachs
Life of this patent
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Abstract
A method of applying an additive to selected regions of a web includes the steps of applying the additive to the raised regions of a patterned roll having an outer surface comprising raised regions and recessed regions, providing a flat roll having a smooth outer surface arranged in rotatable contact with the patterned roll, and conveying the web of material between the patterned roll and the flat roll, thereby to transfer the additive to selected regions of the web. An apparatus for selectively applying an additive to a web is also described.
Claims46
A method of selectively applying an additive to a web of material, said method comprising the steps of:
- (a) providing a patterned roll having an outer surface with a raised surface region and a recessed surface region;
- (b) coating the additive on the raised surface region of the patterned roll without coating the additive on the recessed surface region of the patterned roll;
- (c) providing a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- and
- (d) conveying the web of material between the patterned roll and the flat roll, thereby to transfer the additive to selected regions of the web.
A method of simultaneously forming a three-dimensional web and selectively applying adhesive to the web to produce a three-dimensional cleaning sheet, said method comprising the steps of:
- (a) providing an adhesive transfer roll having an outer surface arranged in rotating contact with a patterned roll;
- (b) applying a layer of pressure-sensitive adhesive to the outer surface of the adhesive transfer roll;
- (c) providing a patterned roll having an outer surface comprising raised regions and recessed regions;
- (d) rotating the patterned roll and the adhesive transfer roll into contact to transfer adhesive to the raised regions of the patterned roll;
- (e) providing a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- (f) providing a single layer, compressible, nonwoven web of material, said web having a thickness of at least about 0.5 millimeters and a basis weight of about 10 grams/m2 to about 150 grams/m2;
- and
- (g) conveying the web of material between the patterned roll and the flat roll, thereby to simultaneously compress and transfer the pressure-sensitive adhesive to selected regions of the web.
A method of simultaneously forming a three-dimensional web and selectively applying adhesive to the web to produce a three-dimensional cleaning sheet, said method comprising the steps of:
- (a) providing an adhesive transfer roll having an outer surface arranged in rotating contact with a patterned roll;
- (b) applying a layer of pressure-sensitive adhesive to the outer surface of the adhesive transfer roll;
- (c) providing a patterned roll having an outer surface comprising raised regions and recessed regions;
- (d) rotating the patterned roll and the adhesive transfer roll into contact to transfer adhesive to the raised regions of the patterned roll;
- (e) providing a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- (f) providing a single layer, compressible, carded, nonwoven web of material comprising a blend of fibers formed of different materials and different sizes, said web having a thickness of at least about 0.5 millimeters and a basis weight of about 10 grams/m2 to about 150 grams/m2;
- and
- (g) conveying the web of material between the patterned roll and the flat roll, thereby to simultaneously compress and transfer the pressure-sensitive adhesive to selected regions of the web.
An apparatus for selectively applying an additive to a web of material, the apparatus comprising:
- (a) a transfer roll having an outer surface;
- (b) a dispenser arranged to deposit the additive on the outer surface of the transfer roll;
- (c) a patterned roll arranged in rotatable contact with the transfer roll, the patterned roll having an outer surface with a raised surface region and a recessed surface region;
- and
- (d) a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- whereby a web of material can be conveyed between the patterned roll and the flat roll to transfer the additive to selected regions of the web.
An apparatus for simultaneously forming a three-dimensional web and selectively applying adhesive to the web to produce a three-dimensional cleaning sheet, the apparatus comprising:
- (a) an adhesive transfer roll having an outer surface arranged in rotating contact with a patterned roll;
- (b) a dispenser for applying a layer of pressure-sensitive adhesive to the outer surface of the adhesive transfer roll;
- (c) a patterned roll having an outer surface comprising raised regions and recessed regions;
- (d) a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- (e) means for providing a single layer, compressible, nonwoven web of material, the web having a thickness of at least about 0.5 millimeters and a basis weight of about 10 grams/m2 to about 150 grams/m2;
- and
- (f) means for conveying the web of material between the patterned roll and the flat roll, thereby to simultaneously compress and transfer the pressure-sensitive adhesive to selected regions of the web.
An apparatus for simultaneously forming a three-dimensional web and selectively applying adhesive to the web to produce a three-dimensional cleaning sheet, the apparatus comprising:
- (a) an adhesive transfer roll having an outer surface arranged in rotating contact with a patterned roll;
- (b) a dispenser for applying a layer of pressure-sensitive adhesive to the outer surface of the adhesive transfer roll;
- (c) a patterned roll having an outer surface comprising raised regions and recessed regions;
- (d) a flat roll having a generally smooth outer surface arranged in rotatable contact with the patterned roll;
- (e) means for providing a single layer, compressible, carded, nonwoven web of material comprising a blend of fibers formed of different materials and different sizes, the web having a thickness of at least about 0.5 millimeters and a basis weight of about 10 grams/m2 to about 150 grams/m2;
- and
- (f) means for conveying the web of material between the patterned roll and the flat roll, thereby to simultaneously compress and transfer the pressure-sensitive adhesive to selected regions of the web.
Dependencies are inferred from the claim text.