US20130047365A1 - Hand and Surface Cleaning Wet Wipe - Google Patents
Hand and Surface Cleaning Wet Wipe Download PDFInfo
- Publication number
- US20130047365A1 US20130047365A1 US13/593,561 US201213593561A US2013047365A1 US 20130047365 A1 US20130047365 A1 US 20130047365A1 US 201213593561 A US201213593561 A US 201213593561A US 2013047365 A1 US2013047365 A1 US 2013047365A1
- Authority
- US
- United States
- Prior art keywords
- wet wipe
- nonwoven
- fabric
- layer
- wipe according
- 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.)
- Abandoned
Links
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- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 13
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- 230000000717 retained effect Effects 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 78
- 238000004519 manufacturing process Methods 0.000 claims description 64
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- 238000000034 method Methods 0.000 claims description 34
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- 239000002904 solvent Substances 0.000 claims description 5
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Images
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Abstract
The disclosure provides a wet wipe for hand and surface cleaning applications which includes a first nonwoven fibrous layer made of continuous polyolefin filaments, a second nonwoven fibrous layer made of polyolefin filaments, said second nonwoven fibrous layer being, and third nonwoven fibrous layer made of continuous polyolefin filaments, in which the second nonwoven fibrous layer is located between the first nonwoven fibrous layer and the third nonwoven fibrous layer; and wherein the first, second and third nonwoven fibrous layers are bonded together to from a multilayered nonwoven fabric, wherein liquid is retained in the multilayered nonwoven fabric and the liquid wets said multilayered nonwoven fabric, the dry volume of said multilayered nonwoven fabric is substantially unchanged after retaining said liquid, and wherein the density of the dry said multilayered nonwoven fabric is at least 0.15 grams per centimeter cube.
Description
- The disclosed technique relates to wet wipes in general and to multilayered wet wipes for hand and surface cleaning applications, in particular.
- Wet wipes are widely used for a variety of purposes such as cleaning, abrading and the like. Wet wipes products may include, for example, baby wipes, cosmetic wipes, automotive wipes, office wipes, household cleaning wipes, as well as wipes for hand and surface cleaning in the industry. Wet wipes generally consist of a substrate formed of one or more layers of nonwoven material made of Meltblown or Spunlaid synthetic polymers. The nonwoven material is impregnated with an active solution suitable for the intended uses of the wipe. Known in the art techniques for manufacturing fabrics suitable to be used in wet wipe applications include combining hydrophilic materials (e.g., cellulosic fibers, rayon, cotton, polyester fibers) with the non-woven fabric to increase the absorption and retention fluids in the substrate. Alternatively, hydrophobic fibers are treated with a surfactant by including the surfactant as part of the polymer melt during the production of the fiber.
- U.S. Pat. No. 7,696,109 issued to Ouellette et al., entitled “Low-density Cleaning Substrate”, is directed to a low density cleaning substrate with an optimized pore volume distribution. The substrate includes a fibrous web having a basis weight of about 15 to 80 grams per square meter, and a density of less than approximately 0.12 grams per cubic centimeter. The fibrous web may include a single unitary layer or multiple layers and may include natural fibers, synthetic fibers or a combination of the two. The substrate directed to by Ouellette et al. may be a pre-loaded wipe, which is moistened prior to use, where the composition loaded onto the substrate may contain dry or liquid compositions or is moistened prior to packaging. According to Ouellette, fluid is mostly absorbed and retained in non-woven materials in the capillaries that are formed between the fibers in the material and the pore volume distribution of the substrate enables it to controllably release a liquid composition onto a surface
- U.S. Pat. No. 7,879,191 issued to Dyer et al., entitled “Wiping Products Having Enhanced Cleaning Abilities”, is directed to wiping products in which an additive composition is incorporated into the wiping product to improve the strength of the product, without significantly affecting the softness or other properties thereof. The additive composition may be made of a discontinuous film of polyolefin dispersion (e.g., containing polymeric particles having a relatively small size in an aqueous medium). The wiping product directed to by Dyer et al. includes a base sheet with the additive composition being present on one side of the base sheet. The base sheet can be made from cellulosic fibers such as pulp fibers, synthetic fibers or a mixture of fibers, such as, for example cellulosic fibers in combination with synthetic fibers. The additive composition may include an aqueous dispersion containing a thermoplastic resin, water, and a dispersing agent such as carboxylic acid. The thermoplastic resin, present within the dispersion, exhibits a relatively small particle size, for example, between 0.05 micrometers cube to about 5 micrometers cube. The thermoplastic resin may include a non-fibrous olefin polymer. The additive composition may be applied to one or both sides of the tissue web. Once applied, the additive composition may form a discontinuous but interconnected film. Alternately, the additive composition is applied in relatively light amounts, so that it forms discrete treated areas on the surface of the tissue web. According to Ouellette et al., the additive composition may improve the ability of the cleaning product to capture dirt particles and clean surfaces. Further according Ouellette et al., the wipe may be held in a liquid impermeable pouch. The opening of the pouch may be covered by a tab that is attached to the pouch by a pressure sensitive adhesive. The tab may be opened to remove a wipe and then resealed against the pouch. The pre-saturated wipes may be cut into individual sheets that are folded and stacked together or spirally wound to form a roll.
- U.S. Pat. No. 6,028,018 issued to Amundson et al., entitled “Wet Wipes with Improved Softness”, is directed to a multilayer wet wipe having improved softness with adequate strength. The wipe directed to by Amundson et al. includes a base sheet, which consists of a number of layers. One of the layers contains fibers, which are not included in other layers. In addition, the wipe may include a liquid. The liquid may contain water, emollients and fragrances. According to one alternative described in Amundson et al., the wipe includes two layers, a soft layer, which may include soft polymeric fibers such as linear low-density polyethylene fibers, and a strong layer, which may include resilient polypropylene fibers. According to another alternative described in Amundson et al., the wipe consists of three layers, two soft outer layers and one strong inner layer in between, having resilient fibers. At least one of the layers is a soft and flexible layer which consists of soft polymeric fibers, such as linear low density polyethylene fibers. The soft polymeric fibers may be combined with natural fibers such as cellulosic fibers. The layered base sheet may also contain at least one strong, resilient layer which may include resilient polymeric fibers with relatively high tensile strength, such as polypropylene fibers. The strong polymeric fibers may be combined with natural fibers such as cellulosic fibers to provide improved thickness and wettability to the base sheet. The natural fibers may also provide voids within the base sheet, which allows for improved moisture retention.
- U.S. Pat. No. 5,683,971 issued to Rose et al., entitled “Abrasive Hand Cleaning Article Incorporating Waterless Hand Cleanser”, is directed to a hand cleaning article with an abrasive substrate which incorporates a waterless hand cleanser (i.e., water does not have to be added during the cleaning process). The substrate in the hand cleaning article comprises a cloth-like towel, where at least one of the opposing surfaces of the towel includes an abrasive ingredient. The waterless hand cleanser directed to by Rose et al. is an aqueous formulation, capable of removing a variety of soils from the skin. In one example directed to by Rose et al., the waterless hand cleanser includes 2-40% by weight organic solvents, 2-20% by weight surfactant, 40-96% carrier and 0-3% by weight inert ingredients.
- U.S. Pat. No. 6,475,934 issued to Nonaka et al., entitled “Wet Cloth for Cleaning, Water Repellent Finish and Polishing of Automobile Paint Film”, is directed to a wet-cloth for cleaning, polishing and providing a water repellent finish to the paint film of an automobile. The wet-cloth consists of a fabric which contains lipophilic fibers and hydrophilic fibers at a ratio that ranges from 80:20 to 50:50 by weight, which is impregnated with a liquid that is prepared by dispersing a water-repellent component in water using an emulsifier. The cloth directed to by Nonaka et al. can be woven, nonwoven, a knit or any fabric which can constitute a base for chemical swabbing. According to one example directed to by Nonaka et al., the wet-cloth has a three-layer structure in which one layer, made from hydrophilic fibers, is arranged between two layers made from lipophilic fibers.
- U.S. Pat. No. 5,817,585 issued to Rose et al., entitled “Paint and Stain Remover in an Abrasive Applicator for Hard Surfaces”, is directed to a towel article with a substrate, which has two opposing surfaces, one of which is an abrasive surface. The substrate incorporates a liquid paint and stain remover for removing a variety of marks from at least partially non-porous surfaces. The towel article directed to by Rose et al. has an abrasive component which is permanently attached or which is an integral part of at least one of its surfaces. The paint and stain remover contains four or more solvents, including an aliphatic solvent, terpenes, glycol ethers or dibasic esters, and acetates or ketones.
- U.S. Pat. No. 4,853,281 issued to Win et al., entitled “Uniformly Moist Wipes” directs to moist wipes made of Meltblown sheets made of thermoplastic polymer such as polypropylene, polyester and the like. According to Win et al., the Meltblown polyolefin webs hold the liquid tightly but also readily transfer the liquid to adjacent contacting Meltblown webs through capillary action. The meltblown sheets contain between 100 and 700 dry weight percent of liquid. The wipes are stacked within a container.
- The disclosed technique will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which:
-
FIG. 1 is a schematic illustration of an exemplary multilayered fabric, constructed and operative in accordance with an embodiment of the disclosed technique; and -
FIG. 2 is a schematic illustration of an exemplary multilayered nonwoven fabric manufacturing process, used in the production of a wet wipe for hand and surface cleaning, constructed and operative in accordance with another embodiment of the disclosed technique. - The disclosed technique overcomes the disadvantages of the prior art by providing a novel multilayered wet wipe for hand and surface cleaning applications which includes multiple layers (e.g., three layers) of nonwoven fibrous materials made of respective nonwoven manufacturing processes. At least one of the outer layers is made of continuous filaments. The multilayered wet wipe retains a liquid. The density of the multilayered nonwoven fibrous material (i.e., prior to the wetting thereof) is at least 0.15 grams per centimeter cube. One of the outer layers is optionally made of either thicker fibers (i.e., relative to the fibers of the opposite outer layer) or melt spots or both, and thus, exhibits a rougher texture which can be abrasive with respect to certain surfaces to be wiped (i.e., one of the outer layers is an abrasive layer). The use of continuous filaments in at least one of the outer layers provides additional strength (e.g., higher tensile) relative to a wipe which is made of the same polymer and which exhibits the same fabric basic weight (i.e., grams per meter square) but made either of discontinuous filaments or is manufactured according to the Meltblown process or both. Furthermore, the use of continuous filaments results in the cleaning action being substantially lint-free. For example, according to the disclosed technique, the wet wipe is suitable for hand and surface cleaning in construction, maintenance, workshop, mechanical, plumbing, welding, farming and painting applications. Furthermore, according to the disclosed technique, the wet wipe may be employed to clean general grime, grease, paints and coatings (e.g., either water-based or oil-based), polyurethane (PUR) and instant-grab adhesives, silicone and acrylic sealants, polyurethane foam, EPOXY fillers and grouts, oils, tars, inks and markers.
- Reference is now made to
FIG. 1 , which is a schematic illustration of an exemplary multilayered fabric, generally referenced 100, constructed and operative in accordance with an embodiment of the disclosed technique to be used as a hand and surface cleaning wet wipe. -
FIG. 1 is a perspective view ofmultilayered fabric 100.Multilayered fabric 100 includes three layers of nonwoven fibrous material. Afirst layer 102, asecond layer 104 and athird layer 106.First layer 102 of nonwoven fibrous material is made of continuous filaments and produced by a respective nonwoven manufacturing process.Third layer 106 of nonwoven fibrous material is also made of continuous filaments and produced by a respective nonwoven manufacturing process.Second layer 104 of nonwoven fibrous material is located between thefirst layer 102 andthird layer 106.Second layer 104 may also be made of continuous filaments. Alternatively,second layer 104 may be made of discontinuous filaments. According to another alternative,second Layer 104 may be made of both continuous and discontinuous filaments.Second layer 104 is produced by a respective nonwoven manufacturing process.First layer 102,second layer 104 andthird layer 106 are bonded together to formmultilayered fabric 100. In general, the nonwoven fibrous material offirst layer 102,second layer 104 andthird layer 106 is made of polymers or copolymers of polyolefins (e.g., polypropylene, polyethylene) and the like, or polyester. Each of the nonwoven manufacturing processes may, for example, be Meltblown, Spunlaid, carded webs manufacturing processes and the like.First layer 102,second layer 104 andthird layer 106 are bonded together employing, for example, thermal bonding, hydro-entanglement, needle bonding, chemical bonding, air-through bonding, or combinations thereof. Eitherfirst layer 102 orthird layer 106 may be made of thicker fibers (i.e., relative to the fibers of the opposite outer layer) or include melt spots or both, and thus, exhibit a rougher texture, which can be abrasive with relative to certain surfaces to be wiped (i.e., eitherfirst layer 102 orthird layer 106 is an abrasive layer). -
TABLE 1 Exemplary properties of multilayer fabric 100TABLE OF PROPERTIES OF DRY FABRIC Property Value Density At least 0.15 (grams per centimeter cube) GSM 20-200 (grams per meter square) Fibers Denier 0.3-15 (grams per 9000 meters) Machine Direction (MD) Tensile 20-200 (Newtons per 5 centimeters tested sample width) Cross Direction (CD) tensile 30-150 (Newtons per 5 centimeters tested sample width) MD/CD tensiles Ratio 1:1-5:1 - It is noted that either one of
first layer 102,second layer 104 andthird layer 106 may be made of respective sub-layers. The sub-layers are produced according to the same manufacturing process of the respective one offirst layer 102,second layer 104 andthird layer 106, and bonded together. Each sub-layer is made of a respective material (e.g., polypropylene) and exhibits respective properties. For example,first layer 102 may be made from two different sub-layers manufactured using a Spunlaid process. The first sub-layer may be made of polypropylene, exhibiting a GSM of 15 and the second sub-layer may be made of polypropylene, also exhibiting a GSM of 15. When these two sub-layers are bonded together to formfirst layer 102, then first layer 102 exhibits a GSM of 30. - When
multilayered fabric 100 is impregnated with a liquid, the liquid is retained bymultilayered fabric 100. In general,multilayered fabric 100 retains the liquid due to the characteristics of the composite structure thereof and the forces created between the liquid andmultilayered fabric 100, primarily between the liquid and the filaments of the Meltblown layer or layers. These forces also result inmultilayered fabric 100 being substantially and uniformly wet over the entire area thereof. - Once
multilayered fabric 100 is bonded,multilayered fabric 100 is then slit and divided (i.e., either cut or perforated) into wipes (not shown) of a predetermined size (i.e., length and width) and the wipes are stacked according to the number of wipes to be placed in the final packaging. Each stack of wipes is placed in a package (e.g., cylindrical container or a soft pack not shown). A predetermined quantity of the liquid is added to the package and the package is closed. Alternatively, each stack of wipes is wetted with a predetermined quantity of the liquid and placed in a soft pack. The soft pack is then closed and may be further packed in a plastic package. According to another alternative, the unwound multilayered fabric is wetted with the liquid. The wetted multilayered fabric is slit and divided into wet wipes. The wet wipes are stacked and each stack of wet wipes is placed in a soft pack. The soft pack is then closed, and may be further placed in a plastic package. The wipes, being made ofmultilayered fabric 100, retain the liquid and thus become wet wipes for hand and surface cleaning. It is noted that the term ‘stack’ relates herein above and below to a vertical stack of wipes, a horizontal stack of wipes or to a roll of wipes. The term ‘closed’ with reference to package relates herein above and below to the package being either closed, sealed and closed or just sealed. - Generally, the quantity of liquid with which the wipes or the multilayered fabric are wetted is between 100% and 800% by dry weight of the wipes. More specifically, the quantity of liquid is between 200% and 400% by dry weight of the wipes. However, it is noted that even after
multilayered fabric 100 is wetted, the dry volume ofmultilayered fabric 100 remains substantially unchanged (i.e., the dry volume ofmultilayered fabric 100 prior to the wetting thereof). For example, whenmultilayered fabric 100 is made of polypropylene, which absorbs less than 0.1% water of the dry fabric weight thereof, the dry volume ofmultilayered fabric 100 remains substantially unchanged. For example, the liquid is a cleaning solution which contains hydrocarbon substances (e.g., solvents, detergents and surfactants), preservatives and anti-bacterial agents, fragrance, antioxidants and buffering agent. The composition of the cleaning solution is determined according to the application for which the wet wipe is particularly intended. For example, when the wet wipe is intended for hand and surface cleaning applications, the cleaning solution contains at least 50% water and at least one of the following at a prescribed quantity for the intended use: -
- 0-50% by weight hydrocarbon solvents;
- 0-10% by weight detergents;
- 0-10% by weight preservatives;
- 0-5% by weight antioxidants;
- 0-10% by weight biological additives/emollients;
- 0-10% by weight fragrance;
- 0-10% by weight buffering agent;
- 0-35% by weight organic esters;
- 0-10% disinfecting agents;
- 0-10% by weight emulsifier;
- 0-5% by weight pH adjuster.
- It is noted that the cleaning solution may include a selected combination of the above ingredients and selected portions thereof. The combination and portions are selected according to the intended use of the wet wipe or according to specifications.
- It is further noted that the use of continuous filaments in either
first layer 102 orthird layer 106 increases the strength of dry multilayered fabric 100 (e.g., increases the machine direction and the cross direction tensile) relative to a wipe which is made of the same polymer and which exhibits the same fabric basic weight (i.e., grams per meter square) but made either of discontinuous filaments or manufactured according to the Meltblown process or both. According to the disclosed technique, this increased strength renders the multilayered wet wipe suitable for hand and surface cleaning applications. The increased strength may further result in a better wipe basic weight to liquid weight ratio. - In general, the composite structure of the fabric is determined according to the specification of the multilayered fabric (i.e., the composite fabric). Following are examples of
multilayered fabric 100, in accordance with the disclosed technique. According to a first example,first layer 102 andthird layer 106 are produced by employing the Spundlaid manufacturing process.Second layer 104 is produced by employing the Meltblown manufacturing process. Thus,multilayered fabric 100 is a Spunlaid-Meltblown-Spunlaid (SMS) fabric. Furthermore,first layer 102 andthird layer 106 are made of continuous filaments of polypropylene whilesecond layer 104 is made of continuous and discontinuous filaments of polypropylene. Additionally, eitherfirst layer 102 orthird layer 106 is an abrasive layer. - According to a second example,
first layer 102 is produced by employing the Spunlaid manufacturing process.Second layer 104 andthird layer 106 are produced by employing the Meltblown manufacturing process. Thus,multilayered fabric 100 is a Spunlaid-Meltblown-Meltblown (SMM) fabric. Furthermore,second layer 104 andthird layer 106 are made of continuous and discontinuous filaments of polypropylene.First layer 102 is made of continuous filaments of polypropylene. In general, the multilayered fabric for the production of wet wipes for hand and surface cleaning applications according to the disclosed technique may include any number of layers of nonwoven materials, where each layer is produced by a respective nonwoven manufacturing process. - According to a third example,
first layer 102 andthird layer 106 are produced by employing the Meltblown manufacturing process.Second layer 104 is produced by employing the Spunlaid manufacturing process. Thus,multilayered fabric 100 is a Meltblown-Spunlaid-Meltblown (MSM) fabric. Furthermore,first layer 102 andthird layer 106 are made of continuous and discontinuous filaments of polypropylene.Second layer 104 is made of continuous filaments of polypropylene. - Reference is now made to
FIG. 2 , which is a schematic illustration of an exemplary multilayered nonwoven fabric manufacturing process, generally referenced 150, used in the production of a wet wipe for hand and surface cleaning applications, constructed and operative in accordance with another embodiment of the disclosed technique.Manufacturing process 150 consists of three successive nonwoven manufacturing processes, the first beingnonwoven manufacturing process 152, the second beingnonwoven manufacturing process 154 and the third,nonwoven manufacturing process 156. Each one of firstnonwoven manufacturing process 152, secondnonwoven manufacturing process 154 and thirdnonwoven manufacturing process 156 produces a respective nonwoven fibrous material. Firstnonwoven manufacturing process 152 produces afirst layer 160 of nonwoven fibrous material. Secondnonwoven manufacturing process 154 produces asecond layer 162 of nonwoven fibrous material. Thirdnonwoven manufacturing process 156 produces athird layer 164 of nonwoven fibrous material.First layer 160 andthird layer 164 are made of continuous filaments.Second layer 162 may also be made of continuous filaments. Alternatively,second layer 162 may be made of discontinuous filaments. According to another alternative,second layer 162 is made of both continuous and discontinuous filaments. Furthermore, and similar tomultilayered fabric 100 ofFIG. 1 ,first layer 160,second layer 162 andthird layer 164 are made of polymers or copolymers of polyolefins (e.g., polypropylene, polyethylene) and the like, or polyester. Additionally, eitherfirst layer 160 orthird layer 164 may be made of thicker fibers (i.e., relative to the fibers of the other layer) and exhibit a rougher texture, which can be abrasive with relative to the surfaces to be wiped (i.e., eitherfirst layer 160 orthird layer 164 is an abrasive layer). - Second
nonwoven manufacturing process 154 is situated between firstnonwoven manufacturing process 152 and thirdnonwoven manufacturing process 156.First layer 160,second layer 162 andthird layer 164 of fibrous material move in a direction indicated byarrow 165. Thus,second layer 162 is located betweenfirst layer 160 and third layer 164 (i.e.first layer 160 andthird layer 164 are the outer layers of the multilayered fabric). Furthermore, each one of firstnonwoven manufacturing process 152, secondnonwoven manufacturing process 154 and thirdnonwoven manufacturing process 156 may independently manufacture the respective layer thereof to form a single layered fabric, a double layered fabric or a triple layered fabric. -
First layer 160,second layer 162 andthird layer 164 are placed one on top of the other, thereby defining a multilayered web. This multilayered web is bonded by passing throughbonder 157.Bonder 157 consists of two sections,upper section 158 andlower section 159. According to one example,bonder 157 consists of two calenders (i.e.,upper section 158 andlower section 159 are both calenders). The multilayered web is bonded by passing between the two calenders. The upper calender may be a heated embossing calender and the lower calender may be heated, or vice versa. Thus, the heat and pressure applied by the two calenders bondsfirst layer 160,second layer 162 andthird layer 164 together.Bonder 157 may alternatively be an air-through bonding unit. Accordingly,upper section 158 is a hot air source andlower section 159 is an air suction unit or vice versa. As the three layers pass between the air source and the air-collection basin, the heat from the hot air bondsfirst layer 160,second layer 162 andthird layer 164 together. For example,first layer 160,second layer 162 andthird layer 164 may alternatively be hydro-entangled, needled, chemically bonded and combinations thereof. - The bonded
first layer 160,second layer 162 andthird layer 164 form amultilayered fabric 166. As mentioned above, each firstnonwoven manufacturing process 152, secondnonwoven manufacturing process 154 and thirdnonwoven manufacturing process 156 may be Meltblown, Spunlaid, carded webs manufacturing processes and the like. For example, similar to what is described above, where firstnonwoven manufacturing process 152 and thirdnonwoven manufacturing process 156 are Spunlaid processes and secondnonwoven manufacturing process 154 is a Meltblown process, the resulting multilayered wet wipe is an SMS material. As a further example, and also similar to what is described above, when firstnonwoven manufacturing process 152 is a Spunlaid process and secondnonwoven manufacturing process 154 and thirdnonwoven manufacturing process 156 are Meltblown processes (designated by the letter ‘M’ inFIG. 2 ), the resulting multilayered wet wipe is an SMM material. According to another example, also similar to what is described above, when firstnonwoven manufacturing process 152 and thirdnonwoven manufacturing process 158 are Meltblown processes and secondnonwoven manufacturing process 156 is a Spunlaid process, the resulting multilayered wet wipe is an MSM material. - For example, after bonding,
multilayered fabric 166 is rolled. The rolled multilayered fabric is then unwound, slit and divided (i.e., either cut or perforated) into wipes (not shown) of determined size (i.e., length and width) and the wipes are stacked according to the number of wipes to be placed in the final packaging. Each stack of wipes is placed in a package (e.g., cylindrical container or a soft pack, not shown). A predetermined quantity of the liquid is added to the package and the package is closed. Alternatively, each stack of wipes is wetted with a predetermined quantity of the liquid and placed in a soft pack. The soft pack is then closed, and may be further placed in a plastic package. According to another alternative, the unwound multilayered fabric is wetted with the liquid. The wetted multilayered fabric is then slit and divided into wet wipes. The wet wipes are stacked and each stack of wet wipes placed in a soft pack. The soft pack is then closed, and may be further placed in a plastic package. The wipes, being made ofmultilayered fabric 166, retain the liquid thus become wet wipes for hand and surface cleaning. - Generally, the quantity of liquid with which the wipes or the multilayered fabric are wetted is between 100% and 800% by dry weight of the wipes. More specifically, the quantity of liquid is between 200% and 400% by dry weight the wipes. Similar to what is described above in conjunction with
FIG. 1 andmultilayered fabric 100,multilayered fabric 166 retains the liquid due to the characteristics of the composite structure thereof and the forces created between the liquid andmultilayered fabric 166, primarily between the liquid and the filaments of the Meltblown layer or layers. These forces also result in the whole area ofmultilayered fabric 166 being substantially and uniformly wet. Similar to multilayered fabric 100 (FIG. 1 ), the dry volume ofmultilayered fabric 166 remains substantially unchanged after the wetting thereof. For example, the liquid is also a cleaning solution that contains ingredients similar to those described above with reference toFIG. 1 . It is further noted that, similar tomultilayer fabric 100, the use of continuous filaments infirst layer 160 andthird layer 164 increases the strength of fabric 166 (e.g., increases machine direction and cross direction tensile) relative to a wipe which is made of the same polymer and which exhibits the same fabric basic weight (i.e., grams per meter square) but made either of discontinuous filaments or manufactured according to the Meltblown process or both. This increased strength renders the multilayered wet wipe produced according to the disclosed technique suitable for hand and surface cleaning applications and results in improved fabric basic weight to liquid weight ratio. - It will be appreciated by persons skilled in the art that the disclosed technique is not limited to what has been particularly shown and described hereinabove. Rather the scope of the disclosed technique is defined only by the claims, which follow.
Claims (22)
1. A wet wipe for hand and surface cleaning applications comprising:
first nonwoven fibrous layer made of continuous polyolefin filaments and produced by a first respective nonwoven manufacturing process;
second nonwoven fibrous layer made of polyolefin filaments, said second nonwoven fibrous layer being produced by a second respective nonwoven manufacturing process; and
third nonwoven fibrous layer made of continuous polyolefin filaments and produced by a third respective nonwoven manufacturing process,
wherein said second nonwoven fibrous layer being located between said first nonwoven fibrous layer and said third nonwoven fibrous layer; and
wherein the first, second and third nonwoven fibrous layers are bonded together to from a multilayered nonwoven fabric,
wherein liquid is retained in the multilayered nonwoven fabric and said liquid wets said multilayered nonwoven fabric, the dry volume of said multilayered nonwoven fabric is substantially unchanged after retaining said liquid, and
wherein the density of the dry said multilayered nonwoven fabric is at least 0.15 grams per centimeter cube.
2. The wet wipe according to claim 1 , wherein said first respective nonwoven manufacturing process and said third respective nonwoven manufacturing process are Spunlaid processes, and
wherein said second respective nonwoven manufacturing process is a Meltblown process.
3. The wet wipe according to claim 1 , wherein said first respective nonwoven manufacturing process is a Spunlaid process, and
wherein said second respective nonwoven manufacturing process and said third respective nonwoven manufacturing process are Meltblown processes.
4. The wet wipe according to claim 1 , wherein said first respective nonwoven manufacturing process and said third respective nonwoven manufacturing process are Meltblown processes, and
wherein said second respective nonwoven manufacturing process is a Spunlaid process.
5. The wet wipe according to claim 1 , wherein either said first layer or said third layer is an abrasive layer.
6. The wet wipe according to claim 1 , wherein the dry fabric machine direction tensile of said fabric is between 20 and 200 Newtons per 5 centimeters tested sample width.
7. The wet wipe according to claim 1 , wherein the dry fabric cross direction tensile of said fabric is between 30 and 150 Newtons per 5 centimeters tested sample width.
8. The wet wipe according to claim 1 , wherein the dry fabric machine direction tensile to cross direction tensile ratio is between 1:1 and 5:1.
9. The wet wipe according to claim 1 , wherein the dry fabric GSM of the dry fabric is between 20 and 200 grams per meter square.
10. The wet wipe according to claim 1 , wherein the dry fibers denier of the dry fabric is between 0.3-15.
11. The wet wipe according to claim 1 , wherein said liquid is a cleaning solution.
12. The wet wipe according to claim 11 , wherein said cleaning solution contains at least 50% water.
13. The wet wipe according to claim 12 , wherein said cleaning solution further contains a selected combination and selected portions of the following:
0-50% by weight hydrocarbon solvents;
0-10% by weight detergents;
0-10% by weight preservatives;
0-5% by weight antioxidants;
0-10% by weight biological additives/emollients;
0-10% by weight fragrance;
0-10% by weight buffering agent;
0-35% by weight organic esters;
0-10% disinfecting agents;
0-10% by weight emulsifier; and
0-5% by weight pH adjuster.
14. The wet wipe according to claim 1 , wherein said first, second and third nonwoven fibrous layers are bonded together by passing between two calenders.
15. The wet wipe according to claim 1 , wherein said first, second and third nonwoven fibrous layers are bonded together by passing through an air-through bonding unit, said air-through bonding unit includes a hot air source and an air suction unit.
16. The wet wipe according to claim 1 , wherein said polyolefin is selected from the group consisting of:
polypropylene; and
polyethylene.
17. The wet wipe according to claim 1 , wherein said multilayered fabric is slit and divided into wipes of determined size and said wipes are stacked,
wherein each stack of wipes is placed in a package,
wherein said package is closed, and
wherein said wipes in said package are wet wipes, wetted with a predetermined quantity of said liquid.
18. The wet wipe according to claim 17 , wherein said predetermined quantity of said liquid is added to said package after the stack wipes are place in said package.
19. The wet wipe according to claim 17 , wherein each stack of wipes is wetted with said predetermined quantity of said liquid prior to said wipes being place in said package, and
wherein said package is soft pack.
20. The wet wipe according to claim 17 , wherein the said multilayered fabric is wetted with said predetermined quantity of said liquid prior to being slit and divided into wipes, and
wherein said package is soft pack.
21. The wet wipe according to claim 17 , wherein said predetermined quantity of said liquid is 100% to 800% by dry weight of said wipes.
22. The wet wipe according to claim 18 , wherein said predetermined quantity of said liquid is 200% to 400% by dry weight of said wipes.
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US20140174472A1 (en) * | 2012-12-21 | 2014-06-26 | Floral Packaging Ip Holdings, Llc | Method and system for removing ink from films |
WO2014160591A1 (en) * | 2013-03-26 | 2014-10-02 | The Procter & Gamble Company | Articles for cleaning a hard surface |
US9307873B1 (en) | 2014-09-23 | 2016-04-12 | Erica Glover | Hand-washing mitt |
US20160250668A1 (en) * | 2015-02-26 | 2016-09-01 | Avintiv Specialty Materials Inc. | Nonwoven fabric for increasing the availability of chlorine in solution |
US20180236747A1 (en) * | 2017-02-17 | 2018-08-23 | First Quality Nonwovens, Inc. | Abrasive wipe |
US11903531B2 (en) | 2019-12-20 | 2024-02-20 | Dow Global Technologies Llc | Cleansing wipe formed from a nonwoven including ethylene/alpha-olefin interpolymers |
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US4906513A (en) * | 1988-10-03 | 1990-03-06 | Kimberly-Clark Corporation | Nonwoven wiper laminate |
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2012
- 2012-08-23 IL IL221612A patent/IL221612A0/en unknown
- 2012-08-24 US US13/593,561 patent/US20130047365A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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US9731329B2 (en) * | 2012-12-21 | 2017-08-15 | Floral Packaging Ip Holdings, Llc | Methods for removing ink from films |
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US9724733B2 (en) * | 2012-12-21 | 2017-08-08 | Floral Packaging Ip Holdings, Llc | Method and system for removing ink from films |
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CN105050472A (en) * | 2013-03-26 | 2015-11-11 | 宝洁公司 | Articles for cleaning a hard surface |
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US9307873B1 (en) | 2014-09-23 | 2016-04-12 | Erica Glover | Hand-washing mitt |
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US10940508B2 (en) * | 2015-02-26 | 2021-03-09 | Avintiv Specialty Materials Inc. | Nonwoven fabric for increasing the availability of chlorine in solution |
US20210154707A1 (en) * | 2015-02-26 | 2021-05-27 | Avintiv Specialty Materials Inc. | Nonwoven Fabric for Increasing the Availability of Chlorine in Solution |
US11707769B2 (en) * | 2015-02-26 | 2023-07-25 | Avintiv Specialty Materials Inc. | Nonwoven fabric for increasing the availability of chlorine in solution |
US20180236747A1 (en) * | 2017-02-17 | 2018-08-23 | First Quality Nonwovens, Inc. | Abrasive wipe |
WO2018152490A1 (en) * | 2017-02-17 | 2018-08-23 | First Quality Nonwovens, Inc. | Abrasive wipe |
CN110381793A (en) * | 2017-02-17 | 2019-10-25 | Pf非织造布有限公司 | Abrasive material cleaning piece |
EP3582671A4 (en) * | 2017-02-17 | 2020-10-28 | PFNonwovens LLC | Abrasive wipe |
US11148391B2 (en) | 2017-02-17 | 2021-10-19 | Pfnonwovens Llc | Abrasive wipe |
US11903531B2 (en) | 2019-12-20 | 2024-02-20 | Dow Global Technologies Llc | Cleansing wipe formed from a nonwoven including ethylene/alpha-olefin interpolymers |
Also Published As
Publication number | Publication date |
---|---|
IL221612A0 (en) | 2012-12-31 |
GB2494057A (en) | 2013-02-27 |
GB201215158D0 (en) | 2012-10-10 |
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