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US 8,225,453 B2Granted
Cleaning sheet
AssigneeKikuo Yamada
InventorKikuo Yamada
Life of this patent
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Abstract
Provided is a cleaning sheet in which a plurality of fiber bound materials produced by bundling a lot of fibers is joined on a base sheet, and at least adjacent two bound fiber materials have respectively different length in the longitudinal direction of the fibers, to constitute a cleaning portion and which can sufficiently wipe off even relatively large dirt particles.
Claims11
A cleaning sheet comprising:
- a base sheet;
- a plurality of sets of plural fiber bound materials, each set having a bound portion formed by bundling a plurality of fibers;
- and
- a substrate sheet interposed between the base sheet and at least one of the sets of plural fiber bound materials to constitute a cleaning portion together with the at least one of the sets of plural fiber bound materials;
- wherein:
- the sets of plural fiber bound materials are disposed side-by-side and each set is joined at its bound portion on at least one surface of the base sheet to form a joining portion;
- a length of a movable portion extending from the bound portion to a free end of one of the sets of plural fiber bound materials is different from a length of a movable portion extending from the bound portion to a free end of another of the sets of plural fiber bound materials disposed adjacently to the one of the sets of plural fiber bound materials;
- and
- the free ends of the movable portions of the adjacently disposed sets of fiber bound materials partially overlap each other to constitute the cleaning portion.
6 more elements
A cleaning sheet comprising:
- a base sheet;
- a plurality of sets of plural fiber bound materials being disposed on at least one surface of the base sheet and joined side-by-side to form a plurality of rows on the base sheet;
- and
- a substrate sheet being disposed and fixed between at least one of the sets of plural fiber bound materials and the base sheet;
- wherein:
- at least two adjacently disposed sets of plural fiber bound materials have respectively different lengths in a longitudinal direction of fibers thereof;
- free ends of the adjacent sets of plural fiber bound materials partially overlap each other;
- and
- the substrate sheet covers an entirety of at least one of the sets of plural fiber bound materials along a row thereof to form a cleaning portion together with the at least one of the sets of plural fiber bound materials and to prevent twining of the fibers of the adjacent sets of plural fiber bound materials.
6 more elements
A cleaning sheet comprising:
- a base sheet;
- and
- a plurality of sets of plural fiber bound materials being disposed on at least one surface of the base sheet and joined side-by-side to form a plurality of rows on the base sheet;
- wherein:
- at least two adjacently disposed sets of plural fiber bound materials have respectively different lengths in a longitudinal direction of fibers thereof;
- free ends of the adjacent sets of plural fiber bound materials partially overlap each other;
- and
- fiber bound materials are disposed on opposed surfaces of the base sheet.
5 more elements
A cleaning sheet comprising:
- a base sheet;
- and
- a plurality of sets of plural fiber bound materials being disposed on at least one surface of the base sheet and joined side-by-side to form a plurality of rows on the base sheet;
- wherein:
- at least two adjacently disposed sets of plural fiber bound materials have respectively different lengths in a longitudinal direction of fibers thereof;
- free ends of the adjacent sets of plural fiber bound materials partially overlap each other;
- and
- the base sheet is cylindrically formed to have at least one opening at a side portion thereof.
5 more elements
Dependencies are inferred from the claim text.