US 2447241 A
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Description (OCR text may contain errors)
Aug. 17, 1948*. ||.'laN- :s|.uN: A 2,447,241
CLEAHSING AND vSGOURIHG PADANI) IIETHOD Fned'sept. 1s, 194s INVEN TOR.
l mr I Patented Aug. 17, 1948 UNITED STAT as4 PATENT oFFlcE.-
cLEANsING AND scoUmNG PAD AND l METHOD Leonard H.' Englund, Chicago, Ill.. assignor to James H. Rhodes & Company, Chicago, Ill., a
corporation of Illinois Application September 13, 1943, Serial No. 502,121
6 Claims. (Cl. 15-209) pads, andthe provision of such'a pad is a principal object of Athe invention.
More specically, it is an object of the invention to provide a cleansing and scouring pad.
made of a water-resistant material which constitutes a core for the pad covered by a plastic composition which acts as an adhesive 'and contains a surface active detergent agent, and a binder material which is a rust inhibitor for a covering of' steel wool for the core and which-also is a means for obtaining optimum pH of water on surfaces being cleansed.
The invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others, and the article possessing the features, properties, and the relation of elements, which are exemplified in the following detailed disclosure', and the-scope of the application of whichwill be indicated in the claims.
For a fuller understanding of the nature and objects of the invention reference should 'be had 'to the following detailed description taken in connection with the accompanying drawing, in which:
Fig. 1 isa diagrammatic illustration of a suitable form of apparatus for practicing the present invention; l
Fig. 2 is a sectional view taken along the lines 2-2 of Fig. 1 and looking in the direction of the arrows; and
Fig. 3 is a perspective view of a cleansing and scouring pad made in accordance with the principles of the present invention.
Referring more particularly to the drawings, there ls indicated at I0 a rotating mandrel mounted upon a standard I I. tape I2 coming-off a millroll I3 on areel or spool I4' is spirally woundvaround the mandrel. This tape may consist of any suitable material such as. for example, paper, cotton or similar material, either felted or woven. Such a material can be made water-resistant by a suitable chemical agent, such as, by means of a polyvinyl alcohol or derivatives thereof.
A water-resistantl Disposed underneath the mandrel I0 is a tank I5 containing a bath ofheated plastic composition I6. An applicator roller I1 rotates in the plastic composition and is wiped by a conventional doctor blade Il. The adjustment of the doctor blade will regulate the amount of plastic composition which is applied to the spirally wound web I2 at this point on the mandrel.
The plastic composition I6 essentially preferably contalns a surface active detergent agent,
such as an alkyl aryl vsulfonate, which causesV formation of a cleansing lather. Another essential material is a binder which preferably is a rust inhibitor and which has the characteristic of obtaining an optimum pH-of water solution on surfaces to be cleansed by the ultimately finished pad when in use and which will maintain a pH range in the water solution on the alkaline side. The exact pHwill be determined, of course, by the conditions under which a pad is used, such as. Ithe amount of water, the temperature, the hardness of water, etc. A preferred binding agent of this character is sodium silicate. A scouring agent may also be employed in the nature of pumice stone. A supplemental binding agent may be used which has the characteristic of retardingtoorapid or undesirable dissolution of the surface active detergent agent. Cooked starchpaste can satisfactorily be used as such a. supplemental binding. The starch will also act as a thickening agent and provides desirable viscosity and consistency 4to the mass of plastic composition in its application tothe spirally wound web.
After va desiredamount of the plastic composition has been applied to the spirally wound web l2 4on the mandrel, a fibrous web of material I9,
preferably steel or other. `metallic wool, running ofi' another mill roll 20 on a reel or spool 2l, is oppositely diagonally wound on themill roll overlyingl the spirally wound tape containing the plastic composition. The spirally wound tape acts as a member for retaining and reinforcing theiibrous web of steel wool as well as functionlng as a means for receiving the plastic composition and in this manner the steel wool is bound to the "tape `which becomes a core.
As the combined spirally wound web ls formed and leaves the end of the mandrel, it is gathered and iiattened between counteracting nip rollers Il. The attened combined web passes over a shear plate Il where a reciprocating shear knife 24 cuts the web into suitable lengths 25 to form cleansing and scouring pads ready for packaging. Buch a pad now consists of a water-resistant material forminga core 2l and a metallic wool outer covering 21 combined with the core by means of a plastic composition 2l.
With' respect Ato the plastic composition, it
should be noted that an optimum amount of the surface active detergent agent lcontained therein consists in using approximately two and onehalf times the weight of such material as compared with the weight of the steel wool. However, a minimum amount vof each of these materials wouldfconsis't. of approximately equal parts by weight.
A cleansing and scouring pad when `made by the present method providesan article which is well suited to the purposes for which it is intended. Buch a pad- V possesses many advantages. For example, when in use the plastic composition provides scouring and cleansing agents in con- Junction with the steel wool. The pumice stone, if used, augmenta the scouring action of the steel detergent to said tube as it is being advanced in said direction, securing an outer layer of metallic wool to saidv adhesive covered tubevas it is being advanced and simultaneously therewith advancing said layer of metallic wool, and cutting said metallic wool covered* tube into suitable lengths.
3. An article of the character described, which comprises a household cleansing and` scouring pad constituting a spirally wound sheet of flexible water-resistant fibrous material secured together by an adhesive to provide a tubular core for said pad opened at both ends, said adhesive containing a surface Iactive detergent agent,"which adhesive provides a layer of substantial thickness surrounding the outer surface of said core, and a layer of felted'metallic wool surrounding said core and secured thereto bysaid adhesive in which a substantial portion of the strands of said wool are embedded, said pad being capable ofrepeated use y because o'f the water-resistivity of said core and wool and the pH obtained by the binding material, plus the surface active detergent agent, aids in lending ideal cleansing properties tothe pad. The steel wool is also prevented from crumbling because the fibers are held in positionv by the water soaps which in conventional pads gumup the steel wool.
' It will thus be seenthat'the oblects hereinbefore set forth. may readily and emciently be attained, and since certain changes in carrying out the above method, and certain modifications inthe article which embody the invention may be made withoutvdeparting from its scope, it 'is :intended that all matter contained in the above l description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.
It is also to' be understood that tne'feuewmg .claims are intendedto cover all of the generic and specific features of the invention herein deinvention which'. as a `matter of language, might be, said to fall therebetween.' A
Particularly, it is to be understood tnetinsaid claims,`ingredients o r compoundsrecitedin the singular are intended to include compatible mixtures of such ingredients wherever the sense per- Having deseribedmy invention. what I eleim .u new and searezesecuresyreners resent n:
1. A method `,of manufacturing cleansing and 'scouringpadawhichcomprisesformingawebof water-resistentv material into a' continuous tube,
the binding effect lof saidadhesive upon said wool whereby the latter resists disintegration during use.
4. An article of the character described, which comprises ahousehold cleansing and scouring Spad constituting a spirally wound sheet of ilexible water-resistant fibrous material secured together by an adhesive to provide a tubular core for said pad `opened at both ends, saidadhesive containing a surface active detergent agent and a supplemental binding agent consisting of starch whereby to retard rapid dissolution of said surface active detergent, which adhesive 4provides a layer of substantial thickness surrounding the outer surface of said core, 'and a layer: of intertwined strands of metallic wool surrounding said core and secured thereto by said-.adhesive in which a substantial portion of 'the strands of said wool are embedded, said pad being capable of repeated use because of the water-resistivity of said core andthe binding eifect'of, said adhesive upon said wool whereby the latter resists disintegration dur- V ible water-resistant fibrous material secured together by an adhesive to provide a tubular core scribed. and all statements.v of the scope of the v for said pad opened at both ends, said' adhesive con-taining a surface active detergent agent, which adhesive provides a layer ofsubstantial thickness surrounding the outer surface of said core, af
spirally wound web of felted steel wool surroundingv said core and secured' thereto by said adhesive in -which a substantial portion ofthe strands Yof said wool are embedded, said pad being capable of repeated use because of the water-resistivity of said corerand the binding e'ect-oi' -said'addisintegration during use. 6. .An article of thecharacter described, which hesive 4upon said wool whereby the latterresists Y l comprises a household cleansing andv scouring pacil applying a piasticcomposition containing a surof witten-resistant material'. intoa continuous` 4tube, advancing said tube in thev y direction of itslongitudinal axis, applying an constituting a'spirally wound sheetfof flexible water-resistant'ilbrous material secured to provide-a tubularcore forV said Dad opened atboth ends, said adhesive comprising an` adhesive active detergent agent and a supplemental binding agent consisting of starch whereby to retard rapid dissolution of said surface active detergent, which L adhesive provides a layer of substantial thickness surrounding the outer surface of s aidcore, and a spirallywound web of intertwined strands of steel wool surrounding said core and secured thereto adhesive a surface active 7,5 by laid adhesive in'whih wbetntll Portion 0f '5 I the strands of said lwool are embedded, said pad being capable of repeated use becauseA of the water-resistivity o! vsaid core and the binding elect of said adhesive upon saidA wool whereby the latter resists disintegration during use.
. LEONARD H. ENGILUND.v
REFERENCES CITED The following references are of` record in the ille of this patent:
4UNl'llED STATES PATENTS Name Date Number Greenfield June 21, 1892 Number Tully Jan. 12, 1943