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WO1998058580A1 - Accessoire de nettoyage a textures multiples - Google Patents

Accessoire de nettoyage a textures multiples Download PDF

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Publication number
WO1998058580A1
WO1998058580A1 PCT/US1998/012837 US9812837W WO9858580A1 WO 1998058580 A1 WO1998058580 A1 WO 1998058580A1 US 9812837 W US9812837 W US 9812837W WO 9858580 A1 WO9858580 A1 WO 9858580A1
Authority
WO
WIPO (PCT)
Prior art keywords
mesh
textured
centimeters
softer
meter
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.)
Ceased
Application number
PCT/US1998/012837
Other languages
English (en)
Inventor
Andrew Raymond Cipra
Richard Michael Girardot
Gene Michael Altonen
Eric Jean Grosgogeat
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to JP50487199A priority Critical patent/JP2002506368A/ja
Publication of WO1998058580A1 publication Critical patent/WO1998058580A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K7/00—Body washing or cleaning implements
    • A47K7/02—Bathing sponges, brushes, gloves, or similar cleaning or rubbing implements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2028/00—Nets or the like

Definitions

  • This invention relates generally to an improved implement for bathing, scrubbing, and the like, i.e., a washing implement, which comprises an improved extruded open cell mesh.
  • a washing implement which comprises an improved extruded open cell mesh.
  • This invention relates to an improved washing implement which exhibits superior softness while retaining acceptable resiliency. Optimization of the softness and resiliency of the washing implement is accomplished through control of a variety of physical features of the improved extruded open cell mesh. More particularly, this invention relates to a washing implement which has at least two pieces of extruded open cell mesh having different textures to provide a multi-textured washing implement that meets a unique consumer need for cleaning sensitive parts of the human body, or roughness for deep cleaning and exfoliation of human skin.
  • Open cell mesh provides a lightweight and strong material for containing relatively heavy objects, while providing the consumer with a relatively unobstructed view of the material contained within the mesh.
  • Open cell meshes have been adapted for use as implements for scrubbing, bathing or the like, due to the relative durability and inherent roughness or scrubbing characteristics of the mesh. Also, open cell meshes improve lather of soaps in general, and more particularly, the lather of liquid soap is improved significantly when used with an implement made from an open cell mesh. Mesh roughness is generally caused by the stiffness of the multiple filaments and nodes of the open cell mesh, and cause a scratching effect or sensation in many instances. To make a scrubbing or bathing implement, the extruded open cell mesh is shaped and bound into one of a variety of configurations, e.g.
  • U.S. Patent No. 4,462,135 to Sanford describes a cleaning and abrasive scrubber manufactured, in part, by the use of an open cell extruded plastic mesh.
  • the Sanford implement is of a generally hourglass shape, although other cylindrical and tube-like structures are described.
  • a rectangular scrubbing implement manufactured from extruded open cell mesh is described in U.S. Patent No. 5,491,864 to Tuthill et al.
  • these references do not describe or characterize a soft, yet resilient washing implement, as their open cell mesh was of the relatively rough and scratchy nature described above. Additionally, these references do not describe or characterize a washing implement which has at least two pieces of extruded open cell mesh having different textures to provide a multi-textured washing implement.
  • Prior open cell mesh used to manufacture washing implements has typically been manufactured in tubes through the use of counter-rotating extrusion dies which produce diamond-shaped cells.
  • the extruded tube of mesh is then typically stretched to form hexagonal-shaped cells.
  • the description of a general hexagonal-shaped mesh can be found in U.S. Patent No. 4,020,208 to Mercer, et al.
  • An example of a counter-rotating die and an extrusion mechanism is described in U.S. Patent No. 3,957,565 to Livingston, et al.
  • square or rectangular webbing has been formed in sheets by two flat reciprocating dies, as shown in U.S. Patent No. 4,152,479 to Larsen.
  • an improved washing implement comprising an extruded open cell mesh which would be soft, durable, relatively inexpensive to manufacture, and relatively resilient. More specifically, there is a need for providing an improved open cell mesh, featuring physical characteristics which could be adequately identified and characterized, so that washing implements could be reliably made from mesh exhibiting all of the aforementioned desired physical properties. Most specifically, there is a need for providing a washing implement which has at least two pieces of extruded open cell mesh having different textures to provide a multi-textured washing implement that meets a unique consumer need for cleaning sensitive parts of the human body, or roughness for deep cleaning and exfoliation of human skin.
  • an improved washing implement made from an extruded open cell mesh featuring enhanced softness with resiliency structural characteristics.
  • a washing implement made from an improved extruded open cell mesh comprising a series of extruded filaments which are periodically bonded together to form repeating cells. The bonded areas between filaments are designated as "nodes", while a "cell” is defined by a plurality of filament segments with one node at each of its corners.
  • the extruded cells of preferred embodiments are typically square, rectangular, or diamond shaped, at the time of extrusion, but the extruded mesh is often thereafter stretched to elongate the nodes, filaments, or both, to produce the desired cell geometry and strength characteristics of the resulting mesh.
  • the mesh can be produced through a counter-rotating extrusion die, two reciprocating flat dies, or by other known mesh forming procedures.
  • Tubes of mesh such as can be produced by counter-rotating extrusion dies, have a preferred node count of between about 90 and about 140, wi ⁇ an especially preferred range of between about 95 and about 115, the nodes being measured circumferentially around the mesh tube.
  • a preferred cell count of a tube or sheet of mesh is between about 130 and about 260 cells/meter, with an especially preferred range of between about 170 and about 250 cells meter, cell count being measured by a standardized test described herein.
  • a preferred basis weight for mesh of the subject invention is from about 4.92 grams meter to about 8.53 grams/meter for the softer textured material and from about 8.20 grams/meter to about 19.68 grams/meter for the rougher textured material.
  • the extruded open cell mesh may be made from low-density polyethylene which is extruded at a Melt Index of between about 1.0 and about 10.0.
  • the preferred Melt Index for extruding low-density polyethylene is between about 2.0 and about 7.0.
  • Preferred nodes for softer textured material of the present invention have an approximate length, measured from opposing crotches, of from about 0.051 centimeters to about 0.200 centimeters, and have an effective diameter of from about 0.030 centimeters to about 0.071 centimeters.
  • the nodes for softer textured material may also be characterized as having a thickness of from about 0.020 centimeters to about 0.038 centimeters, and a width of from about 0.038 centimeters to about 0.102 centimeters.
  • the most preferred range of node for softer textured material length is from about 0.060 centimeters to about 0.185 centimeters, and the most preferred range of node width for softer textured material is from about 0.50 centimeters to about 0.102 centimeters.
  • Preferred Initial Stretch values for softer textured material are from about 7.0 inches to about 20.0 inches. More preferred Initial Stretch values for softer textured material are from about 9.0 inches to about 18 inches. Most preferred Initial Stretch values for softer textured material are from about 10.0 inches to about 16.0 inches.
  • FIG. 1 illustrates an exemplary prior art hand-held ball-shaped washing implement
  • FIG. 2 illustrates an exemplary mesh section after extrusion
  • FIG. 3 illustrates an exemplary extruded mesh section after stretching
  • FIG. 3 A illustrates an enlarged exemplary view of a node of FIG. 3 after stretching
  • FIG. 4 illustrates a mesh section used for counting cells in an open cell mesh
  • FIG. 4A illustrates an enlarged view of a piece of the mesh of FIG. 4
  • FIG. 5 is a schematic illustration of testing procedures for measuring an open cell mesh's resistance to an applied weight, useful in characterizing the open cell mesh made according to the subject invention
  • FIG. 6 illustrates a merged node in open cell mesh
  • FIG. 6A illustrates a cross sectional view of the merged node of FIG. 6
  • FIG. 7 illustrates an overlaid node in open cell mesh
  • FIG. 7A illustrates a cross sectional view of the overlaid node of FIG. 7;
  • FIG. 8 illustrates a step in a suitable process of manufacturing a polymer mesh puff in accordance with the present invention, illustrating the stretching of two separate tubes of mesh in a direction transverse to their respective longitudinal axes;
  • FIG. 9 illustrates a suitable step of collectively binding the two stretched tubular pieces of mesh of FIG. 8 about the aggregate of their effective centerpoints;
  • FIG. 10 illustrates a suitable step of selectively releasing and manipulating part of one of the separate tubes of mesh from the curved supports of FIG. 8;
  • FIG. 11 is a perspective view of a polymer mesh puff made in accordance with the present invention.
  • FIG. 1 shows a balllike configuration for a washing implement 10 made of mesh.
  • the improved open cell mesh of the present invention can be formed into washing implements of a variety of shapes and sizes.
  • washing implement and more particularly, a hand-held ball-like washing implement or "puff".
  • washing implement is to be broadly construed to include various applications of such an implement for bathing, exfoliating skin, scrubbing pans, dishes and the like, as well as other uses.
  • Low density polyethylene (LDPE, a polyolefin), poly vinyl ethyl acetate, high density polyethylene or mixtures thereof are preferred to produce the mesh described herein, although other resin materials can be substituted provided that the resulting mesh conforms with the physical parameters defined below.
  • adjunct materials are commonly added to extruded mesh. Mixtures of pigments, dyes, brighteners, heavy waxes and the like are common additives to extruded mesh and are appropriate for addition to the mesh described herein.
  • the selected resin is fed into an extruder by any appropriate means.
  • Extruder and screw feed equipment for production of synthetic webs and open cell meshes are known and available in the industry.
  • Resin melt temperatures will vary depending upon the resin selected.
  • the material's Melt Index is a standard parameter for correlating extrusion die temperatures to the viscosity of the extruded plastic as it flows through the die.
  • Melt Index is defined as the viscosity of a thermoplastic polymer at a specified temperature and pressure; it is a function of the molecular weight. Specifically, Melt Index is the number of grams of such a polymer that can be forced through a 0.0825 inch orifice in 10 minutes at 190 degrees C by a pressure of 2160 grams.
  • a Melt Index of from about 1.0 to about 10.0 for LDPE is preferred for manufacturing the mesh described herein for use in washing implements, and a Melt Index of from about 2.0 to about 7.0 is especially preferred.
  • a Melt Index of from about 2.0 to about 7.0 is especially preferred.
  • an appropriate alternative Melt Index might be selected.
  • the temperature range of operation of the extruder can vary significantly between the melt point of the resin and the temperature at which the resin degrades.
  • a counter-rotating die has an inner and outer die, and both have channels cut longitudinally around their outer and inner circumferences respectively, such that when resin flows through the channels, fibers are extruded.
  • Individual fibers, e.g., F, as seen in FIG. 2 are extruded from each channel of the inner die as well as each channel of the outer die.
  • the channels from the outer die align with the channels of the inner die, at predetermined intervals.
  • the liquefied resin is thereby mixed as two channels ahgn and the two fibers, e.g., F, as seen in FIG. 2, being extruded are bonded until the extrusion channels of the outer and inner die are again misaligned due to continued rotation.
  • the inner die and outer die rotate counter-directionally to each other, the process of successive alignment and misalignment of the channels of each die occurs repeatedly.
  • the point at which the channels ahgn and two fibers are bonded together is commonly referred to as a "node" (e.g. N of FIG. 2).
  • the "die diameter” is measured as the inner diameter of the outer die or the outer diameter of the inner die. These two diameters must be essentially equal to avoid stray resin from leaking between the two dies.
  • the die diameter affects the final diameter of the tube of mesh being produced, although die diameter is only one parameter which controls the final diameter of the mesh tube. Although it is believed that a wide variety of die diameters, for example between about 2 inches and about 6 inches, are suitable for manufacturing the meshes described herein, especially preferred die diameters are in the range of between about 2 Vi and 3 Vi inches (about 6.35 and 8.90 centimeters).
  • extrusion channels can likewise be varied among a variety of geometric configurations known to the art.
  • Square, rectangular, D-shaped, quarter-moon, semicircular, keyhole, and triangular channels are all shapes known to the art, and can be adapted to produce the mesh described herein.
  • Quarter-moon channels are preferred for the mesh of the present invention, although other channels also provide acceptable results.
  • the tube of mesh After the tube of mesh is extruded from the counter-rotating dies, it can be characterized as having diamond-shaped cells, as shown in FIG. 2, where each of the four corners of the diamond is an individual node N and the four sides of die diamond are four, separately formed filament segments 82.
  • the tube is then pulled over a cylindrical mandrel where the longitudinal axis of the mandrel is essentially aligned with the longitudinal axis of the counter-rotating dies, i.e., the machine direction (MD as shown in FIGs. 2 and 3).
  • the mandrel serves to stretch the web circumferentially resulting in stretching the nodes and expanding the cells.
  • the mandrel is immersed in a vat of water, oil or other quench solution, which is typically 25 degrees C or less, which serves to cool and solidify the extruded mesh.
  • the mandrel can be a variety of diameters, although it will be chosen to correspond appropriately to the extrusion die diameter.
  • the mandrel is preferably larger in diameter than the die diameter to achieve a desired stretching effect, but the mandrel must also be small enough in diameter to avoid damaging the integrity of the mesh through overstretching.
  • Mandrels used in conjunction with the preferred 2.5"-3.5" die diameters mentioned above might be between about 3.0" and 6.0" (about 7.62 and 15.24 cm). Mandrel diameter has been found to have a pronounced impact on the resiliency and softness of the mesh produced.
  • the nodes of the diamond cell mesh are stretched in the machine direction, they are transformed from small, ball-like objects, e.g., N of FIG. 2, to longer, thinner filamentlike nodes, e.g. N of FIGS. 3 and 3 A.
  • the cells are thereby also transformed from a diamond-like shape to hexagonal-shape wherein the nodes form two sides of the hexagon, and the four individual filament segments F form the other four sides of the hexagon.
  • the geometric configuration of the mesh cells can also vary significantly depending on how the tube of mesh is viewed. Thus, the geometric cell descriptions are not meant to be limiting but are included for illustrative purposes only.
  • the tube After passing over the mandrel, the tube is then stretched longitudinally over a rotating cylinder whose longitudinal axis is essentially perpendicular to the longitudinal axis of the tube, i.e. the longitudinal axis of the rotating cylinder is perpendicular to the machine direction (MD) of the mesh.
  • the mesh tube is then pulled through a series of additional rotating cylinders whose longitudinal axis is perpendicular to the longitudinal axis, or the machine direction (MD) of the extruded mesh.
  • the mesh is taken-up fester than it is produced, which supplies the desired longitudinal, or machine direction (MD) stretching force.
  • MD machine direction
  • a take-up spool is used to accumulate the finished mesh product.
  • process parameters e.g., resin feed rate, die diameter, channel design, die rotation speed and the like
  • node count basis weight and cell count.
  • a key parameter when selecting a manufacturing process for the improved mesh described herein is the type of node produced.
  • a node is the bonded intersection between filaments.
  • Typical prior art mesh is made with overlaid nodes (FIGS. 7 and 7A).
  • An overlaid node can be characterized in that the filaments which join together to form the node are still distinguishable, although bonded together at the point of interface.
  • the filaments at both ends of the node form a Y-crotch, although the filaments are still relatively distinguishable at the interface of the node.
  • Overlaid nodes result in a mesh which has a scratchy feel.
  • a merged node (FIGS. 6 and 6A) can be characterized by the inability after production of the mesh to easily visually distinguish the filaments which formed the node.
  • a merged node resembles a wide filament segment.
  • a merged node can have a "ball-like" appearance, similar to that shown by N of FIG. 2, or can be stretched subsequent to formation to have the appearance of node N of FIGS. 3 and 3 A.
  • at each end of the node there is a Y-crotch, configuration, e.g., 12 of FIGS. 3 and 3 A, at d e point where die filament segments F branch off die node.
  • node length 14 for both overlaid and merged nodes, node length 14, as shown in FIG.
  • the production of die softer textured material may be accomplished by producing a mesh widi merged nodes and die production of die rougher textured material may be accomplished by producing a mesh with overlaid nodes or a combination of merged and overlaid nodes.
  • the rougher textured material may also be constructed having only merged nodes but having another key parameter value (such as basis weight) varied from diat of the softer textured material.
  • Node diameter is not easily measured because nodes rarely have uniform cross- sectional diameters.
  • an "effective diameter" can be defined as the average between a node's smallest diameter and its largest diameter measured near d e midpoint between the Y-crotches at each end.
  • the measurement of node length and node diameter are to be compared at die conclusion of die extrusion process, (i.e., after the material has been through the stretching steps).
  • Preferred nodes of mesh for softer textured material to be used for washing implements have an approximate length, measured from opposing crotches, of from about 0.051 centimeters to about 0.200 centimeters, and die nodes for softer textured material have an effective diameter of from about 0.030 centimeters to about 0.071 centimeters.
  • the nodes for softer textured material can also be characterized as having a thickness ranging from about 0.020 centimeters to about 0.038 centimeters, and a widdi of from about 0.038 centimeters to about 0.102 centimeters.
  • the most preferred range of node length for softer textured material is from about 0.060 centimeters to about 0.185 centimeters, and die most preferred range of node widdi for softer textured material is from about 0.50 centimeters to about 0.102 centimeters.
  • the measurement of flexibility of a mesh is a critical characterization of the softness and conformability of a mesh. It has been determined that a standardized test of mesh flexibility can be performed as described herein and as depicted in FIG. 5. The resulting measurement of flexibility is defined herein as Initial Stretch. As schematically illustrated in FIG. 5, the procedure for determining Initial Stretch begins by hanging a mesh tube 26 from a test stand horizontal arm 28, which in turn is supported by a vertical support member 30 and which is in turn attached to a test stand base 32. The tube of mesh is hung from arm 28 so that its machine direction (MD) is parallel to arm 28.
  • MD machine direction
  • d e mesh is formed in a tube. If a sheet of mesh is produced, as was described in the Larsen '491 patent, the sheet must be formed into a tube by binding die sheet's edges securely together prior to performing the Initial Stretch measurement.
  • the tube of mesh 26 for testing should be 6.0 inches (15.24 centimeters) in length, as indicated by length 34. Six inches was chosen, along with a 50.0 gram weight, as an arbitrary standard for making the measurement. As will be apparent, other standard conditions could have been chosen; however, in order to compare normalized Initial Stretch values for different meshes, it is preferred tiiat the standard conditions chosen and described herein are followed uniformly.
  • a standardized weight is suspended from a weight support member 36, which has a weight support horizontal arm 3 placed tiirough and hung from the mesh tube 26. It is critical that the total combined weight of the weight support member 36 and die standardized weight equal 50 grams.
  • Distance 40 illustrates the Initial Stretch, and is die distance which mesh tube 26 stretches immediately after the weight has been suspended from mesh tube 26.
  • a linear scale 42 is preferably used to measure distance 40.
  • the resilient property of the open cell mesh can be measured by suspending a larger standardized weight (i.e., 250 grams as shown in FIG. 5) and subtracting distance 40 from distance 41. It is critical for softer textured material that the total combined weight of die weight support member and die larger standardized weight equal 250 grams. The result is directly proportional to the level of resilience in die material.
  • FIG. 4 illustrates a standardized method for counting cells; a staggered row of cells are counted out in die machine direction of die tube of mesh, as shown in FIG. 4A.
  • a rigid frame may be used to secure a section of mesh so tiiat it is held firmly in place.
  • the mesh is pulled taught along its machine direction (MD).
  • MD machine direction
  • a segment 16 is marked off, for example with a felt tipped marker.
  • This segment can be any length, but preferably at least a foot long for maximum accuracy in making the measurement. For example, one may choose to mark off a segment that is 30 centimeters in length; this is fine, so long as the final count is converted to cells per meter.
  • FIG. 4A illustrates an enlarged portion of die mesh, with numbers 1 through 9 indicating individual cells. As can be seen in FIG. 4A, one cell in each row is counted down d e length of the marked off portion of the tube; every other row is vertically aligned due to the diamond or hexagonal cell configuration. This yields die cells per unit length.
  • Characterizing the improved mesh in the cross-machine direction is accomplished by counting a string of nodes along a line around die circumference of d e tube of mesh. This method is universal to tubes or flat sheets of mesh and simply comprises selecting a linear row of nodes and counting them. As should be apparent, any row of nodes will contain an identical number of nodes; tiiis is dependent on die extrusion die configuration. Preferred ranges for node count for mesh to be used for washing implements are between about 90 and about 140. Especially preferred ranges are between about 95 and about 115.
  • Basis weight is another empirical measurement which can be performed on any tube or sheet of extruded open cell mesh.
  • a length of mesh e.g., 30 centimeters, is measured in the machine direction, tiien is cut off and weighed.
  • the basis weight is preferably converted to and tracked in units of grams per meter.
  • a preferred basis weight for mesh of the subject invention is from about 4.92 grams/meter to about 8.53 grams/meter for the softer textured material and from about 8.20 grams/meter to about 19.68 grams/meter for the rougher textured material.
  • Improved lather is also an important improvement of bathing implements made from mesh of the present invention. Lather is improved when the soap is in bar form, liquid, and most importantiy gel soap.
  • tactile softness i.e., die feel of the mesh as it contacts human skin, is an important criteria.
  • resiliency is also an important physical criteria.
  • mesh of the present invention has been found to have the unique properties of being both soft and relatively resilient, i.e. the mesh is able to retain its shape when used as a washing implement.
  • a washing implement which is soft but does not conform to the skin or object being scrubbed (i.e., die implement is limp), or is not resilient, is generally not acceptable to consumers. Therefore, the improved open cell mesh described herein provides a material which is both soft to the touch and, when used to manufacture washing implements, is resilient enough to provide die necessary conformability which is preferred by consumers.
  • die washing implement described herein has at least two pieces of extruded open cell mesh having different textures to provide a multi-textured washing implement that meets a unique consumer need for cleaning sensitive parts of the human body, or roughness for deep cleaning and exfoliation of human skin.
  • Producing at least two pieces of extruded open cell mesh having different textures may be accompUshed by varying one or more of the following controlled physical properties: basis weight, node type, resin type, resin molecular weight distribution, resin flex modulus, resin melt index, and cell count.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Accessoire de nettoyage qui comporte au moins deux pièces d'un tissu à mailles ouvertes extrudé présentant des textures différentes, et qui permet d'obtenir un accessoire de nettoyage répondant aux besoins du consommateur en cela que ledit accessoire est doux pour le nettoyage de parties sensibles du corps, ou rugueux pour le nettoyage en profondeur et l'exfoliation de la peau humaine. Pour produire au moins deux pièces de tissu à mailles ouvertes extrudé de texture différente, on modifie une ou plusieurs propriétés physiques, à savoir la masse surfacique, le type de noeuds, le type de résine, la répartition de la masse moléculaire de la résine, le module d'élasticité de la résine, l'indice de fluage de la résine et le nombre de mailles.
PCT/US1998/012837 1997-06-20 1998-06-19 Accessoire de nettoyage a textures multiples Ceased WO1998058580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50487199A JP2002506368A (ja) 1997-06-20 1998-06-19 多重触感洗浄用具

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US5039197P 1997-06-20 1997-06-20
US60/050,391 1997-06-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104448515A (zh) * 2014-11-05 2015-03-25 龚子华 一种沐浴球、条及其生产工艺

Citations (11)

* Cited by examiner, † Cited by third party
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US3343196A (en) 1964-08-03 1967-09-26 Paul L Barnhouse Scrub puff
US3917889A (en) 1971-10-18 1975-11-04 Conwed Corp Extruded tubular net products
US3957565A (en) 1974-03-13 1976-05-18 Bemis Company, Inc. Apparatus for extruding plastic netting
US4020208A (en) 1974-09-11 1977-04-26 Netlon Limited Extruded plastic mesh
US4123491A (en) 1976-01-29 1978-10-31 Conwed Corporation Process for manufacturing high strand count plastic net
US4152479A (en) 1968-01-12 1979-05-01 Conwed Corporation Method of orienting sheet plastic net and article produced therefrom
US4462135A (en) 1983-01-24 1984-07-31 Sanford Howard R Cleaning and abrasive scrubbers and method for their preparation
US5144744A (en) 1989-04-03 1992-09-08 Antonio Campagnoli Manufacturing method of a diamond-mesh polyethylene netting sponge
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