EP2623011A1 - Feuille de nettoyage et outil de nettoyage - Google Patents

Feuille de nettoyage et outil de nettoyage Download PDF

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Publication number
EP2623011A1
EP2623011A1 EP11828965.1A EP11828965A EP2623011A1 EP 2623011 A1 EP2623011 A1 EP 2623011A1 EP 11828965 A EP11828965 A EP 11828965A EP 2623011 A1 EP2623011 A1 EP 2623011A1
Authority
EP
European Patent Office
Prior art keywords
sheet
cleaning
outer layer
elongation rate
cleaning sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11828965.1A
Other languages
German (de)
English (en)
Other versions
EP2623011A4 (fr
Inventor
Satoshi Hasegawa
Tomokazu Suda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2010215369A external-priority patent/JP2011136149A/ja
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of EP2623011A1 publication Critical patent/EP2623011A1/fr
Publication of EP2623011A4 publication Critical patent/EP2623011A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A47L13/24—Frames for mops; Mop heads
    • A47L13/254—Plate frames
    • A47L13/256—Plate frames for mops made of cloth

Definitions

  • the invention relates to a cleaning sheet and a cleaning tool, and more particularly to a cleaning sheet and a cleaning tool which can be suitably used for wiping an object to be cleaned, such as floor.
  • Japanese non-examined laid-open Patent Publication No. 2007-20615 discloses a cleaning sheet having an inner layer sheet and outer layer sheets integrally formed with the inner layer sheet on both sides of the inner layer sheet.
  • the cleaning sheet can be attached to a cleaning sheet mounting member of a cleaning tool.
  • a central portion of the cleaning sheet is placed on a cleaning part of the cleaning sheet mounting member. Both ends of the cleaning sheet are pushed in through holding members of the cleaning sheet mounting member and held between the holding members.
  • the known cleaning sheet has a loosely entangled portion in its central portion and a tightly entangled portion in its both end portions.
  • the end portions of the cleaning sheet are designed to have a higher elongation rate or lower rigidity in order to prevent the cleaning sheet from becoming detached, the end portions of the cleaning sheet held by the holding members are easily damaged by tensile stress. Therefore, it is difficult to secure reliable holding of the cleaning sheet and resistance to damage in a balanced manner. Accordingly, it is an object of the invention to provide a technique for improving usability of the cleaning sheet and the cleaning tool.
  • a cleaning sheet which can be attached to a cleaning sheet mounting member.
  • This cleaning sheet is preferably formed of nonwoven fabric.
  • the cleaning sheet according to this invention has a central portion forming a cleaning side and at least one end portion formed on at least one side of the central portion along one predetermined direction.
  • the end portion may be formed along one direction on only one side of the central portion, or it may be formed on both sides of the central portion.
  • the end portion has a first part having a predetermined first elongation rate and a second part having a predetermined second elongation rate higher than the first part.
  • the second part is formed between the first part and the central portion along the above-described one direction.
  • a boundary between the first and second parts is removably held by the cleaning sheet mounting member. It is essential for the boundary to be held at least in part.
  • the "elongation rate (mm/N) of the cleaning sheet” is a measure of stretchiness of the cleaning sheet. The higher the elongation rate, the stretchier the sheet.
  • Various methods can be used to change the elongation rates of the first and second parts. For example, a method of changing the number of thicknesses of the sheet elements in the first and second parts, a method of changing the entangled state of fibers in the first and second parts, or a method of changing the constitution of raw cotton in the first and second parts can be used.
  • the first portion having a lower elongation rate (less stretchy) is held caught by the cleaning sheet mounting member due to its own rigidity without being damaged by the tensile stress.
  • the second part having a higher elongation rate (more stretchy) stretches and thus effectively absorbs the tensile stress. As a result, the cleaning sheet can be prevented from becoming detached from the cleaning sheet mounting member during cleaning operation.
  • the elongation rates of the first and second parts are changed according to the number of thicknesses of the sheet elements in the first and second parts.
  • the second part having a higher elongation rate may be formed by a single sheet element, or it may be formed by several thicknesses of sheet elements.
  • the second part formed by a single sheet element can be referred to as the "second part having the sheet element in a single layer".
  • the first part having a lower elongation rate is formed by a larger number of thicknesses of sheet elements than the sheet elements of the second part.
  • a method of layering sheet elements a method of overlaying different sheet elements one on another or a method of folding one sheet element can be used.
  • the layered sheet elements are preferably bonded together.
  • Various methods can be used as the bonding method.
  • the first and second parts are different in the number of thicknesses of the sheet elements, so that it can be easy to visually check the boundary between the first and second parts.
  • the operation of holding the boundary by the holding member is easily performed.
  • the cleaning sheet in which the end portion has the first and second parts having different elongation rates can be manufactured at lower cost.
  • the layered sheet elements in the first part of the end portion are bonded together by embossing.
  • the sheet elements containing thermoplastic fibers are overlaid one on another and bonded together by hot embossing.
  • Various kinds of sheet elements can be used as the sheet elements containing thermoplastic fibers. In this embodiment, the elongation rates of the first and second parts can be more easily changed.
  • the end portion has a third part having a lower elongation rate than the second part.
  • the third part is formed between the second part and the central portion along the one direction.
  • the third part may have the same elongation rate as the first part, or it may have a different elongation rate from the first part.
  • the strength of the central portion side can be maintained, while the cleaning sheet can be prevented from becoming detached from the cleaning sheet mounting member.
  • the head 110, the handle 150 and the pipe 13 0 are features that correspond to the "cleaning sheet mounting member", the “holding member” and the “connecting member for connecting the head and the handle", respectively, according to this invention.
  • the number of the pipe elements 133 forming the pipe 130 can be appropriately selected.
  • the handle 150 may also be directly connected to the connecting mechanism 131 provided on the head 110.
  • the head 110 is shaped like a plate as shown in FIG. 2 and has an upper side 112 on which the connecting mechanism 131 is mounted, and a lower side (mounting side or cleaning part) 111 (see FIG. 10 ) opposite to the upper side 112.
  • Holding members 120 are provided on the upper side 112.
  • each of the holding members 120 has a plurality of elastic holding pieces 121 which are defined by cuts.
  • the cleaning sheet 200 has a central portion 200b and end portions 200a, 200c provided on both sides of the central portion 200b, which will be described below in detail.
  • the central portion 200b forms a main cleaning side of the cleaning sheet 200.
  • the cleaning sheet 200 has a three-layer structure having a single inner layer sheet 210 and single outer layer sheets 220, 230 disposed on the both sides of the inner layer sheet 210.
  • the "cleaning sheet having a three-layer structure” here includes not only a cleaning sheet having a three-layer structure across its entire region, but a cleaning sheet having a three-layer structure in its main region (e.g. the central portion 200b) and not having a three-layer structure (e.g. having a single- or two-layer structure) in the other regions. This is also true for multi-layer structures other than the three-layer structure.
  • a hydrophilic nonwoven fabric sheet is used as the inner layer sheet 210. It is essential for the hydrophilic nonwoven fabric sheet to be hydrophilic as a whole, and the nonwoven fabric sheet may be formed of hydrophilic fibers and hydrophobic fibers.
  • the hydrophilic fibers include rayon fibers, cotton fibers and pulp fibers. In this embodiment, the nonwoven fabric sheet is formed only of rayon fiber having high water absorbency and high moisture retentivity.
  • the inner layer sheet 210 is a feature that corresponds to the "impregnated element", the "third nonwoven fabric sheet” or the "third sheet” according to this invention.
  • a nonwoven fabric sheet (spun lace nonwoven fabric sheet) manufactured by a water jet method (hydroentangling method) is used as the inner layer sheet 210.
  • spun lace nonwoven fabric of intertlaced fibers is manufactured by jetting high-pressure water, for example, onto a web of randomly arranged fibers from a plurality of nozzles disposed in an orientation transverse to the direction of feed of the web.
  • each of the nozzles for jetting high-pressure water has orifices having a diameter of 92 ⁇ m and continuously arranged over the width of 2.0 mm and such nozzles are arranged at intervals (orifice pitches) of 3.0 mm.
  • the outer layer sheet 220 (230) has a two-layer structure having a layer (inner layer) 222 (232) facing the inner layer sheet 210, and a layer (outer layer) 221 (231) on the opposite side from the side facing the inner layer sheet 210.
  • the outer layer sheets 220, 230 are formed of fibers mainly consisting of thermoplastic fibers.
  • Thermoplastic fibers forming the inner layers 222, 232 have a lower melting point than thermoplastic fibers forming the outer layers 221, 231.
  • the outer layers 221, 231 consist, for example, of thermoplastic fibers of polyethylene terephthalate (PET) in major proportions and the rest are rayon fibers.
  • the compounding ratio of polyethylene (PE) fibers/polyethylene terephthalate (PET) fibers and rayon fibers is 70 % by weight: 30 % by weight.
  • the basis weight of the outer layer sheets 220, 230 is preferably set within the range of 35 to 40 gsm from the viewpoints of the functionality, productivity, costs, etc., though, if it exceeds 3 0 gsm, there is no particular problem from the viewpoints of the amount of release of the cleaning solution.
  • the inner layer sheet 210 and the outer layer sheets 220, 230 can be bonded together by the thermoplastic fibers having a lower melting point which are contained in the inner layer 222 of the outer layer sheet 220 and the inner layer 232 of the outer layer sheet 230.
  • each of the ends of the cleaning sheet has a first part having a first elongation rate and a second part having an elongation rate higher than the first elongation rate.
  • the second part is disposed on the central portion side of the first part, and a boundary between the first and second parts is formed at a position such that it can be held by the holding members 120 of the head 110 of the cleaning tool.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 .
  • the cleaning sheet 200 has a rectangular shape having a width M (e.g. 205 mm) and a length S (e.g. 275 mm).
  • the inner layer sheet 210 has a rectangular shape having a width N (e.g. 90 mm) and the length S.
  • the outer layer sheets 220, 230 have a rectangular shape having a width (e.g. 190 mm) shorter than the width M and the length S.
  • the outer layer sheet 220 (230) has a base 220c (230c) and a folded part 220a (230a) having a predetermined fold length from its one edge in the width direction.
  • the folded part 220a (230a) is folded over to the inner layer 222 (232) side along a folding line 220b (230b) and overlaid on part of the base 220c (230c).
  • the outer layer sheets 220, 230 having the respective folded parts 220a, 230a are arranged on the both sides of the inner layer sheet 210.
  • the inner layer 222 of the outer layer sheet 220 and the inner layer 232 of the outer layer sheet 230 are arranged on the inner layer sheet 210 side (so as to be opposed to each other). Further, the inner layer sheet 210 is centrally located in the direction of the width M (the vertical direction as viewed in FIG. 3 and the horizontal direction as viewed in FIG.4 ).
  • the folded parts 220a, 230a of the outer layer sheets 220, 230 are arranged on the opposite sides of the inner layer sheet 210 in the width direction. Further, the folding lines 201, 202 are provided in the cleaning sheet 200 toward the center in the width direction and spaced a distance R apart from each other which is equal to or longer than the width N of the inner layer sheet 210 (R ⁇ N).
  • the cleaning sheet 200 is divided into the centrally located central portion 200b and the end portions 200a, 200c provided on the both sides of the central portion 200b in the width direction by the folding lines 201, 202.
  • the end portion 200a (200c) has, from one end (the other end) in the width direction, a first part 200a1 (200c1) of a two-layer structure having the folded part 220a (230a) and part of the base 220c (230c) of the outer layer sheet 220 (230), a second part 200a2 (200c2) of a single-layer structure having the base 220c (230c) of the outer layer sheet 220 (230), and a third part 200a3 (200c3) of a two-layer structure having the base 220c of the outer layer sheet 220 and the base 230c of the outer layer sheet 230.
  • the central portion 200b has a three-layer structure having the base 220c of the outer layer sheet 220, the base 230c of the outer layer sheet 230 and the inner layer sheet 210.
  • the folding lines 201, 202 serve as guides for positioning the central portion 200b of the cleaning sheet 200 such that it faces the lower side (cleaning part) 111 of the head 110 when the cleaning sheet 200 is attached to the head 110 of the cleaning tool 100.
  • a width R of the central portion 200b of the cleaning sheet 200 (distance between the folding lines 201, 202) is preferably equal to or longer than a width W of the lower side (cleaning part) 111 of the head 110 of the cleaning tool 100 (R ⁇ W).
  • the width N of the inner layer sheet 210 is preferably equal to or shorter than the width W of the lower side (cleaning part) 111 of the head 110 of the cleaning tool 100 (N ⁇ W).
  • the relationship between the distance R, the width N and the width W is not limited to this.
  • FIG. 6 is a sectional view taken along line VI-VI in FIG. 5 .
  • the inner layer sheet 210 is bonded to the outer layer sheets 220, 230 on edges (ends) of the outer layer sheets 220, 230 in the length direction (the horizontal direction as viewed in FIG. 5 ).
  • the bonding area of bonding the inner layer sheet 210 and the outer layer sheets 220, 230 is located away from the center of an area (main cleaning area) of the cleaning sheet which is used for normal cleaning operation.
  • a hot embossing method is used for the bonding.
  • hot embossed portions 203 are formed on the edges of the outer layer sheets 220, 230 on the both ends in the length direction.
  • the hot embossed portions 203 and bonded portions 203a in which the inner layer sheet 210 is bonded to the outer layer sheets 220,230 are formed by hot embossing the outer layer sheets 220, 230.
  • the outer layer sheets 220, 230 are formed of fibers containing thermoplastic fibers.
  • hot embossing for bonding the outer layer sheets 220, 230 in the third parts 200a3, 200c3 is referred to as the "second hot embossing".
  • first hot embossing only the edges of the inner layer sheet 210 on the both ends in the length direction are subjected to first hot embossing, but the edges of the third parts 200a3, 200c3 on the both ends in the length direction may also be subjected to first hot embossing.
  • the cleaning sheet 200 may be formed by using the inner layer sheet 210 which is impregnated with the cleaning solution in advance.
  • the cleaning solution may be applied to the central portion 200b of the outer layer sheets 220, 230 so that the inner layer sheet 210 is impregnated with the cleaning solution via the outer layer sheets 220, 230.
  • FIG. 10 shows the cleaning sheet 200 in this embodiment which is attached to the head 110.
  • FIG. 10 is a sectional view taken along line X-X (in the width direction) in FIG. 2 .
  • the central portion 200b of the cleaning sheet 200 is located to face the lower side (cleaning part) 111 of the head 110.
  • the end portions 200a, 200c of the cleaning sheet 200 are folded over along the folding lines 201, 202 and placed on the upper side 112 of the head 110.
  • the length of the first parts 200a1, 200c1 (the length of the folded parts 220a, 230a) is set to 20 mm.
  • the first parts 200a1, 200c1 are located inward of the second parts 200a2, 200c2 or toward the center in the width direction (on the opposite side from the central portion 200b) and held by the holding pieces 121.
  • part of the boundary 200P1 (200Q1) between the first part 200a1 (200c1) having a lower elongation rate and the second part 200a2 (200c2) having a higher elongation rate is caught by the holding pieces 121 facing each other.
  • a point of change in the elongation rate of the sheet is held by the holding pieces 121.
  • the cleaning sheet 200 can be easily detached from the head 110.
  • the second part 200a2 (200c2) having a higher elongation rate is designed as a single-layer structure and the first part 200a1 (200c1) having a lower elongation rate as a two-layer structure.
  • the cleaning tool having the first part 200a1 (200c1) and the second part 200a2 (200c2) which are different in elongation rate can be easily manufactured at lower costs.
  • part of the boundary Z between the first member X having a lower elongation rate and the second member Y having a higher elongation rate is held by the holding pieces 121, so that the second member Y having the higher elongation rate becomes stretchy and can effectively absorb the tensile stress.
  • part of the boundary Z between the first member X and the second member Y is kept held by the holding pieces 121.
  • the boundary Z between the first member X and the second member Y is pulled out through the holding pieces 121.
  • the end portion 200a (200c) of the cleaning sheet 200 is detached from the holding pieces 121.
  • the end portion 200a (200c) of the cleaning sheet 200 can be easily detached from the holding pieces 121.
  • each of the ends of the cleaning sheet has a first part having a lower elongation rate and a second part having a higher elongation rate and the second part is disposed on the central portion side of the first part. The boundary between the first part and the second part is held by the holding pieces.
  • the property of releasing the cleaning solution from the impregnated element to the outer layer sheets is determined by the amount of cleaning solution which can be impregnated into the impregnated element, or the amount of cleaning solution which is released from the impregnated element to the outer layer sheets.
  • a space may be provided between the impregnated element and the outer layer sheets, or a fusion bonded layer may be formed on the inner sides of the outer layer sheets (facing the impregnated element).
  • a method for controlling the property of releasing cleaning solution from the impregnated element to the outer layer sheets is used.
  • the above-described cleaning sheet may also be used singly (without being mounted to the cleaning sheet mounting member of the cleaning tool) to clean an object to be cleaned.
  • the cleaning sheet or the cleaning tool of this invention can be used to clean objects having various shapes, such as planar, curved, uneven or stepped shape.
  • the cleaning sheet may also be designed to be used in a dry state to clean an object to be cleaned.

Landscapes

  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP11828965.1A 2010-09-27 2011-09-22 Feuille de nettoyage et outil de nettoyage Withdrawn EP2623011A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010215369A JP2011136149A (ja) 2009-12-01 2010-09-27 清掃シートおよび清掃用具
PCT/JP2011/071708 WO2012043409A1 (fr) 2010-09-27 2011-09-22 Feuille de nettoyage et outil de nettoyage

Publications (2)

Publication Number Publication Date
EP2623011A1 true EP2623011A1 (fr) 2013-08-07
EP2623011A4 EP2623011A4 (fr) 2017-09-06

Family

ID=45895517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11828965.1A Withdrawn EP2623011A4 (fr) 2010-09-27 2011-09-22 Feuille de nettoyage et outil de nettoyage

Country Status (4)

Country Link
EP (1) EP2623011A4 (fr)
JP (1) JP5918696B2 (fr)
CN (1) CN103140156B (fr)
WO (1) WO2012043409A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3208306B2 (ja) * 1995-11-17 2001-09-10 ユニ・チャーム株式会社 使い捨て拭き取り用具
JP3706433B2 (ja) * 1996-06-28 2005-10-12 ユニ・チャーム株式会社 シート状清掃材
JP3680456B2 (ja) * 1996-11-14 2005-08-10 日本製紙株式会社 拭き布用複合シート
US6305046B1 (en) * 1998-06-02 2001-10-23 The Procter & Gamble Company Cleaning implements having structures for retaining a sheet
JP3558892B2 (ja) * 1998-09-24 2004-08-25 ユニ・チャーム株式会社 清掃用シート
JP3754570B2 (ja) * 1999-03-11 2006-03-15 ユニ・チャーム株式会社 清掃用シート
JP4410458B2 (ja) * 2002-08-02 2010-02-03 山田 千代恵 清掃具用シート
JP4571470B2 (ja) * 2004-09-30 2010-10-27 ユニ・チャーム株式会社 清掃用シート
JP4671792B2 (ja) * 2005-07-12 2011-04-20 花王株式会社 清掃用シート
CN101209196B (zh) * 2006-12-28 2012-03-21 杨雅箐 拖把清洁布固定结构
JP4628352B2 (ja) * 2006-12-29 2011-02-09 花王株式会社 清掃シート
JP2011136149A (ja) * 2009-12-01 2011-07-14 Unicharm Corp 清掃シートおよび清掃用具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012043409A1 *

Also Published As

Publication number Publication date
CN103140156A (zh) 2013-06-05
CN103140156B (zh) 2016-08-31
JP5918696B2 (ja) 2016-05-18
WO2012043409A1 (fr) 2012-04-05
JPWO2012043409A1 (ja) 2014-02-06
EP2623011A4 (fr) 2017-09-06

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