WO2014116661A1 - Matière non tissée de préparation et nettoyage de surface en fibres de mélamine - Google Patents

Matière non tissée de préparation et nettoyage de surface en fibres de mélamine Download PDF

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Publication number
WO2014116661A1
WO2014116661A1 PCT/US2014/012483 US2014012483W WO2014116661A1 WO 2014116661 A1 WO2014116661 A1 WO 2014116661A1 US 2014012483 W US2014012483 W US 2014012483W WO 2014116661 A1 WO2014116661 A1 WO 2014116661A1
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WO
WIPO (PCT)
Prior art keywords
fibers
nonwoven
melamine
cleaning
nonwoven material
Prior art date
Application number
PCT/US2014/012483
Other languages
English (en)
Inventor
Paul Leon LATTEN
Richard KNOWLSON
Original Assignee
Basofil, Llc
Jacob Holm & Sons, Ag
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 Basofil, Llc, Jacob Holm & Sons, Ag filed Critical Basofil, Llc
Publication of WO2014116661A1 publication Critical patent/WO2014116661A1/fr

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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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/10—Carding machines with other apparatus, e.g. drafting devices, in integral or closely-associated combination
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing

Definitions

  • the present invention relates to nonwoven surface preparation and cleaning materials. More specifically, the present invention relates to nonwoven surface preparation and cleaning materials comprising melamine fibers.
  • Nonwoven cleaning pads are well known.
  • No. 1,852, 1 14 discloses a renewable surface dust cloth that is composed of a plurality of thin, fibrous, loosely compacted layers.
  • U.S. Patent No. 8, 152,929 describes cleaning a surface by rubbing the surface with a non-abrasive fabric comprised of a multitude of nonwoven polyester fibers which are bound together in the form of a sheet with a binder.
  • the binder consists of an ethylene-vinyl chloride copolymer.
  • the nonwoven polyester fibers have a diameter which is within the range of from 10 micrometers to about 50 micrometers.
  • the polyester fibers can be polyethylene terephthalate fibers or polyethylene naphthalate fibers.
  • lofty, fibrous, nonwoven abrasive products for scouring surfaces such as the soiled surfaces of pots and pans is also well known. These products are typically lofty, nonwoven, open mats formed of fibers which are bonded together at points where they intersect and contact each other.
  • U.S. Patent No. 5,458,962 describes a flexible and resilient, fibrous surface treating article comprising an open, lofty, nonwoven fibrous web formed of entangled fibers bonded together at points where they contact one another by a binder.
  • the binder generally comprises a copolymer of an acrylate monomer and an acrylamide monomer, a crosslinked reaction product of a polyol and a melamine crosslinking-agent, and a reaction product of a urea derivation and formaldehyde.
  • Low-density abrasive products can be formed of randomly dispersed staple fibers which are bonded together at points of contact with a binder that contains abrasive particles.
  • the staple fibers typically have been crimped and are laid down by equipment such as a "Rando Webber" web-forming machine (marketed by the Curlator Corporation of Rochester, N.Y. and described in U.S. Patent Nos. 2,541,915; 2,700, 188; 2,703,441 and 2,744,294) to form a lofty open mat.
  • a "Rando Webber” web-forming machine marketed by the Curlator Corporation of Rochester, N.Y. and described in U.S. Patent Nos. 2,541,915; 2,700, 188; 2,703,441 and 2,744,294
  • One very successful commercial embodiment of such an abrasive product is that sold under the trade designation "Scotch-Brite" by the 3M Company of St. Paul, Minnesota.
  • Low-density abrasive products of this type can be prepared by the method disclosed by Hoover et al in U.S. Patent No. 2,958,593.
  • the low-density abrasive products described above may also be formed of webs or mats of continuous fibers.
  • Fitzer discloses a low-density abrasive product comprising a uniform cross-section, generally flat-surfaced, open, porous, lofty web of autogenously bonded, continuous, undulated, interengaged filaments.
  • the web of Fitzer is formed by downwardly extruding a plurality of thermoplastic organic filaments into a quench bath.
  • the filaments As the filaments enter the quench bath, they begin to coil and undulate, thereby setting up a degree of resistance to the flow of the molten filaments, causing the molten filaments to oscillate just above the bath surface.
  • the spacing of the extrusion openings from which the filaments are formed is such that, as the molten filaments coil and undulate at the bath surface, adjacent filaments touch one another.
  • the coiling and undulating filaments are still sufficiently tacky as this occurs, and, where the filaments touch, most adhere to one another to cause autogenous bonding to produce a lofty, open, porous, handleable filament web.
  • the web, so formed, is then impregnated with a tough binder resin which adherently bonds the filaments of the web together and also bonds a multitude of abrasive granules, uniformly dispersed throughout the web, to the surface of the filaments.
  • fibrous polishing and/or abrading materials can be prepared from continuous or substantially continuous synthetic filaments by the method disclosed by Zimmer et al. in U.S. Patent No. 3,260,582.
  • crimped or curled continuous filaments are straightened out under tension into a substantially parallel relationship with one another, uniformly coated while under tension, with an adhesive which may or may not contain abrasive particles, interlocked one with another by release of such tension and then set in a permanently interlocked and lofty, open, three- dimensional state by curing or setting up the adhesive.
  • U.S. Patent No. 5,025,596 describes a low-density nonwoven abrasive pad for scouring surfaces.
  • the pad is comprised of a multiplicity of continuous, crimped thermoplastic organic filaments.
  • the pad is made by arranging the filaments into an open lofty array, bonding substantially all of the filaments together at a first and second bond site, and then cutting the array at the bond sites such that each bond is divided into at least two bond area segments with each bond area segment having the filament array bonded therein in a unitary structure.
  • Another type of cleaner is a foam-like material consisting of a formaldehyde- melamine-sodium bisulfite copolymer known as melamine foam. It is a component of the commercial Magic Eraser® cleaning product.
  • the open cell foam is microporous and its polymer substance is very hard, so that when used for cleaning it works like extremely fine sandpaper, getting into tiny grooves and pits in the object being cleaned. On a larger scale, the material feels soft. However, if the surface being cleaned is not sufficiently hard, it may be finely scratched by the melamine material. The foam wears away, rather like a pencil eraser, leaving behind a slight residue.
  • a nonwoven surface preparation or cleaning material e.g., a floor buffing pad, polishing pad or a wipe, comprising melamine fibers.
  • the nonwoven surface preparation or cleaning material in one embodiment, comprises from 20 to 100% by weight melamine fibers.
  • Other synthetic and natural fibers can be used in conjunction with the melamine fibers. However, it is the melamine fibers which are important, and the actual amount can be varied based on the nature of the surface to be cleaned, the cleaning difficulty expected, and the material cost.
  • a method for preparing the nonwoven cleaning material comprises the steps of carding melamine fibers with a carding machine and then hydroentangling the carded melamine fibers.
  • the carding machine is a particular carding machine that has no main roll cylinder, only a number of smaller cylinders. This type of carding machine reduces breakage of the melamine fibers and results in a much better cleaning material.
  • the method for preparing the nonwoven material comprises carding and then needlepunching a web comprising melamine fibers.
  • the method for preparing the nonwoven material comprises wetlaying the melamine fibers, generally in combination with other fibers.
  • the present invention is based upon the recognition that melamine fibers can be successfully used in a surface preparation or cleaning material, such as a pad or wipe, with excellent results.
  • the material can be effectively and efficiently made using a number of methods, such as a spunlace nonwoven process or a needlepunch process.
  • the cleaning material need only be wet with water to provide an effective cleaner of dirt, soap scum, etc. No other cleaning chemicals are required, but can be used as desired.
  • the cleaning material can be free of surfactants, cleaning detergents and binders.
  • Such melamine fiber cleaning materials are significantly lower in cleaning cost, per use and are even more durable than melamine foam block cleaners.
  • FIG. 14 The figure of the drawing illustrates a card configuration for carding melamine fibers in the preparation of a nonwoven melamine fiber cleaning material in accordance with the present invention.
  • the invention relates to a cleaning or surface preparation substrate containing melamine fibers combined with other fibers in a spunlace needlepunch or wet laid nonwoven process.
  • Fibrous melamine is well suited for use in a wide variety of surface preparation, scrubbing, cleaning and wiping applications including household, janitorial, food service, industrial, medical, dental, automotive, flooring or any other end uses where a pliable and effective removal or cleaning substrate is needed.
  • a preferred needlepunch nonwoven configuration comprises melamine fibers blended with fibers like viscose rayon, Tencel®, polyester, nylon, wood pulp, polypropylene, bicomponents and others.
  • Melamine is an organic base and a trimer of cyanamide, with a 1,3,5-triazine skeleton.
  • Melamine fiber is a manufactured fiber in which the fiber- forming substance is a synthetic polymer composed of at least 50% by weight of a cross-linked melamine polymer.
  • Melamine fibers are commercially available from Basofil ® of North Carolina.
  • Melamine fiber is a heat resistant fiber based on melamine chemistry, with a 400°F (200°C) continuous operating temperature.
  • Typical fiber lengths are in the 5-100 mm range and the average diameter is about 15 ⁇ . For a spunlace or needlepunch nonwoven configuration, the fiber length is generally in the 25-100 mm range, most commonly around 50 mm. Fiber lengths can be supplied in the range of from 5-25 mm average length, which are more suitable for wetlaid and airlaid processing.
  • the present invention relates to a cleaning material or substrate containing melamine fibers.
  • the cleaning material comprises from 20 - 100 wt% melamine fibers, e.g., from 20 to 80 wt% melamine fibers.
  • the cleaning material comprises from 30 - 70 wt% melamine fibers, e.g., from 40 to 60 wt% melamine fibers.
  • the melamine fibers can be combined with other fibers.
  • the other fibers can include rayon, Tencel®, bicomponent, polyesters, woodpulp, polyolefins such as polypropylene, cotton, jute, bamboo or nylon fibers.
  • the cleaning material comprises 50 wt% melamine fibers and 50 wt% polyester fibers. In another embodiment, the cleaning material comprises 50 wt% melamine fibers, 30 wt% viscose fibers and 20 wt% polyester fibers. In another embodiment, the cleaning material comprises 20 wt% melamine fibers, 30 wt% weight viscose fibers and 50% by weight polyester fibers. In another embodiment, the cleaning material comprises 65 wt% melamine fibers and 35 wt% cellulose (e.g., viscose fiber, etc.). In another embodiment, the cleaning material comprise 65 wt% melamine fiber, 25 wt% cellulose (e.g., viscose fiber, etc.) and 10 wt% polyester fiber.
  • the outer surface of the cleaning material has a visual texture or pattern that may provide an aesthetic and/or functional benefit for a user.
  • One functional benefit that may be provided by the pattern is to improve surface preparation or the cleaning efficacy of the material.
  • suitable visual patterns include, but are not limited to, dots, dashes, wavy lines and herringbone lines.
  • the basis weight of the nonwoven cleaning material is generally in the range of about 20-1200 g/square meter. This is suitable for spunlace, airlaid, needlepunch, wetlaid or other fabric formation technologies. In one
  • the nonwoven material has a basis weight in the range of from 40-150 g/square meter, e.g., 40-1 lOg/square meter, which is quite suitable for spunlace and wetlaid configurations.
  • the nonwoven material has a basis weight in the range from 70-1200 g/square meter, or 300-600 g/square meter, or 800- 1200 g/square meter, which basis weights are quite suitable for needlepunched configurations.
  • Melamine fibers are the critical ingredient that delivers unique surface preparation or cleaning properties. Prior to use, the invention needs only to be wet with water to provide an effective cleaner of dirt, soap scum, rust, baked on food, and other soils from surfaces like glass, tile, metal, wood, vinyl, etc. No other cleaning chemicals are required but may be combined with the invention cleaning material to further enhance cleaning of certain surfaces. Many conventional "wet" wipes are pre-moistened with surfactants and detergents to enhance cleaning. "Dry” wipes are often used in conjunction with a chemical cleaner at the point of application. The invention can eliminate the need and cost of the aqueous cleaning chemicals, their packaging and transportation. However, they can also utilize such added chemicals if desired.
  • Melamine fiber substrates are also significantly lower in cleaning cost/use and are more durable than melamine foam block cleaners. Therefore, the invention can save money at initial purchase and over the useful cleaning life of the product.
  • melamine fiber may also be blended with various synthetic and cellulosic fibers like: polypropylene, cotton, jute, bamboo, nylons and others to enhance absorbency, resiliency, compression resistance, thickness, softness, toughness, strength, abrasion resistance and other properties.
  • the critical melamine fiber component has shown good cleaning and surface enhancement properties with as little as 20% by weight of the blend. Samples can be made with up to 80%, and even 100% melamine fibers. Outside active layers comprising 100% melamine fibers have been successful in layered materials.
  • polyethylene and polypropylene fibers are quite suitable.
  • polyesters polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and/or polypropylene terephthalate (PPT) are quite suitable.
  • a spunlace nonwoven configuration is one preferred for the cleaning material.
  • the spunlace nonwoven configuration is of particular applicability to a wipe cleaning material.
  • the method of preparing the spunlace nonwoven involves carding the melamine fibers with a carding machine, followed by hydroentangling the fiber.
  • the product made from melamine fibers has some unique properties related to surface preparation, cleaning and wiping, however the fiber production process produces a fiber which can be very difficult to process through conventional means. Described below is one manner in which a hydroentangled version of this product can be produced, and exemplary product formulations.
  • An example of such a card machine is the Erko EWK 413.
  • This card configuration allows for a limited reduction in the fiber length of the melamine fiber, with a before carding average fiber length of about 41 mm and an after carding average fiber length of about 38 mm for a 50% melamine fiber material.
  • This card type has no main roll cylinder, instead it has a number of small cylinders. Consequently, there are significantly less worker and stripper rolls used and there is much less working of the fibers to open them. This dramatically reduces breakage of the melamine fiber.
  • the roll speeds are lower on this card configuration once again leading to less damage of the melamine fiber, but also to less flying fibers in the card as a whole.
  • the clearances between rolls are generally wider on this card configuration.
  • the wire clothing used is the same as that used on cotton cards which means the teeth are much less aggressive again meaning less breakage of the relatively brittle melamine fiber.
  • the carding and hydroentangling of the melamine fiber was carried out with the following basic formulations:
  • spunlace nonwoven samples were prepared using the carding and hydroentangling method described above.
  • a needlepunch nonwoven configuration is also a preferred configuration for the cleaning material. This configuration finds particular applicability for surface preparation or scrubbing pads.
  • the needlepunch nonwoven configuration is prepared by carding and needlepunching a fibrous web comprising melamine fibers. Layers of fibers, comprising the same or different fibers, can also be needlepunched to create the nonwoven cleaning material. The needling can be from one side or both sides of the nonwoven.
  • needlepunch samples were prepared by intimately blending, carding and needlepunching fibers, as indicated in the Table below.
  • the Table indicates the composition of the nonwoven webs for each sample, Nos. 1-9. Needlepunch Nonwoven Samples (Intimate Blend)
  • Intimate blends typically comprise 30 - 70% of staple length melamine fiber as the active cleaning ingredient which is blended with other manmade and cellulosic fibers.
  • Cellulosic fibers like rayon, cotton, flax etc.
  • Polyester and polypropylene fibers from 3 - 200 denier can be added for increased compression resistance, tensile strength, durability, thickness, cost reduction, and other reasons.
  • melt colored polyester or polypropylene fibers can be blended at 10- 50% to give the substrate color across the palette range.
  • Basis weight ranges from 70 - 1200 grams/square meter (gsm) with a preferred weight of 300 - 900 gsm. Fabric thickness varies from 3 - 7 mm. Depending on the needling density and the end use application, thickness and basis weight might increase or decrease beyond the ranges above. For example, a melamine fiber containing floor buffing pad might be 25mm thick.
  • this layered configuration offers greater debris removal or cleaning efficacy since more melamine fiber is at the user interface rather than buried inside the structure. Preferentially putting the more expensive melamine fiber at the surface has the second benefit of reducing overall raw material cost of the fabric.
  • Roll goods are comprised of 2 or more layers consolidated by needlepunch in the forms:
  • layer A has high fiber melamine content (50-100%) on the active or outsides on the fabric.
  • Basis weight of this layer is generally 70-200 gsm.
  • Layer B does not contain melamine fiber and could be another carded fiber nonwoven, scrim, film, foam, etc.
  • This layer can be comprised of low cost (recycled or inexpensive) fibers and/or functional fibers that increase: thickness, compression resistance, resilience, absorbency, abrasiveness, softness, durability, stretch, etc.
  • Layer B might also be rendered more antimicrobial through additives or treatment.
  • Basis weight for this layer might range from 100 - 700 gsm depending on the type of material used and end user requirements.
  • Overall thickness typically ranges from 3-7 mm. Total basis weight is typically 300 - 900 gsm. Thickness and weight could extend beyond these ranges depending on end user requirements.
  • cleaning materials were made by using a conventional wet laying technique.
  • the composition of each wetlaid sample, Nos. 1-3, are indicated in the Table below.
  • Short cut melamine fiber ranging from 5-25mm in length is dispersed in water using dispersants and possibly viscosity modifiers.
  • This shortcut melamine fiber could then be blended with wood pulp, rayon (1.5 - 5 denier x 1 ⁇ 4"), bicomponents and other shortcut fibers that reduce cost and deliver functional benefits as described prior.
  • the thoroughly mixed furnish is then formed into a roll good in a typical wetlay nonwoven process.
  • Basis weights typically range from 40-80 gsm.
  • the resulting sheet or fabric has low tensile strength which might be desirable where quick dissociation is needed for disposal. However, in most applications, greater strength is needed and can be gained by:
  • the melamine fiber cleaning material of the present invention has many advantages as a cleaning material, either pad or wipe.
  • the material can be sold as a wet or dry wipe, resulting in great packaging flexibility. Chemical free cleaning is offered, as one only needs to add water. Also, the cleaning material itself can be free of surfactants, chemical cleaners and binders. The triboelectric properties of the cleaning material are exceptional, thereby allowing the wipe to pick up and hold small particles. As noted before, cost advantages are realized by using the present cleaning material.
  • the cleaning material can also be effectively used as part of a laminate or composite structure, if so desired.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne une matière non tissée de préparation ou nettoyage de surface comprenant des fibres de mélamine et un procédé pour préparer cette matière. La matière non tissée, dans un mode de réalisation, comprend de 20 à 100% en poids de fibres de mélamine. On peut utiliser d'autres fibres synthétiques et naturelles conjointement avec les fibres de mélamine. Cependant, ce sont les fibres de mélamine qui sont importantes et on peut faire varier leur quantité concrète en fonction de la nature de la surface à nettoyer, de la difficulté de nettoyage et du coût de la matière.
PCT/US2014/012483 2013-01-22 2014-01-22 Matière non tissée de préparation et nettoyage de surface en fibres de mélamine WO2014116661A1 (fr)

Applications Claiming Priority (4)

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US201361755201P 2013-01-22 2013-01-22
US61/755,201 2013-01-22
US201361889803P 2013-10-11 2013-10-11
US61/889,803 2013-10-11

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CN104726994A (zh) * 2014-12-26 2015-06-24 安徽省中日农业环保科技有限公司 一种儿茶素纤维混纺除臭阻燃机织面料及其制作方法
CN104726995A (zh) * 2014-12-26 2015-06-24 安徽省中日农业环保科技有限公司 一种可屏蔽紫外光的仿针织效果的机织面料及其制作方法
CN112011885A (zh) * 2020-08-31 2020-12-01 无锡恒诺纺织科技有限公司 一种粘胶纤维针织面料制作方法

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CN108950867B (zh) * 2018-08-31 2020-04-14 福建冠泓工业有限公司 一种高强度抗皱水刺无纺布的生产工艺
CN109610092B (zh) * 2018-12-26 2021-04-13 四川金象赛瑞化工股份有限公司 一种抛光用无纺布
CN111035296A (zh) * 2020-01-07 2020-04-21 山东昌诺新材料科技有限公司 一种涤纶足浴布及其制备方法

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CN104726994A (zh) * 2014-12-26 2015-06-24 安徽省中日农业环保科技有限公司 一种儿茶素纤维混纺除臭阻燃机织面料及其制作方法
CN104726995A (zh) * 2014-12-26 2015-06-24 安徽省中日农业环保科技有限公司 一种可屏蔽紫外光的仿针织效果的机织面料及其制作方法
CN112011885A (zh) * 2020-08-31 2020-12-01 无锡恒诺纺织科技有限公司 一种粘胶纤维针织面料制作方法

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