US2284254A - Method of treating composite strip products - Google Patents

Description

May26,1942. c. BATCIHELLER V r 2,284,254

METHOD .OF TREATING COMPOSITE STRIP PRODUCTS Filed Jul 2 0, I938 C/eme/ws fiafc/wfler P76. 6 I "&9

ATTO/P VE Yr stiff paper or light cardboard. j

Patented May 26, 1942 METHOD OF TREATINGCOMPOSITE STRIP u PRODUCTS Clements Batcheller, Glens Falls, N. Y., assignor to Allegheny Ludlum Steel Corporation, a corporation of Pennsylvania Application July 20, 1938, Serial No. 220,326 I V 4 Claims. My'invention particularly relates to a method of providing the facing element of a flexible composite strip product which comprises a facing element of thin. flexible, 'preferably'corrosion-resistant, metal with a substantially even, unwarped surface.

Under cold rolling processes, exceedingly thin cause of their high resistance to corrosion, lightness in weight per unit of surface area, cheap ness as compared to like corrosion-resistant alloy steels of heavier gauge and aesthetic and enduring properties as compared to ordinary carbon steels. Such thin, paper-thin gauge strips when combined with a suitable backing of flexible, yieldable material form a very useful, composite product which is particularly adapted for such uses.

Corrosion-resistant metals such as chromiumcontaining alloy steels, when cold rolled to such extremely thin gaugea'work-hardento a conlie flat and they are otherwise diflicult to work.

However, when such strips are combined with a suitable backing as, for example, of the character hereinafter pointed out, they may be easily 1 154-2) b elements being preferably afiected by-heavy external pressure. 1

Among the adhesives which are very suitable areclay base asphaltic emulsionsof the-stable type, synthetic resins and even special latex cements, all of Which because they-are capable of yieldingto some degree without ruptureg produce a very strongand effective bond-but do not reduce the flexibility of the finished composite product when dry. 1

A composite product comprising a facing. element of thin, corrosion-resistant, alloysteel of the character above pointed out having affixed thereto, by means of an adhesiveof .the'foregoing character, a backing of the type ,herein referredrto, may be easily worked, out and the like; is flexible and may be rolled,coiled or bent without rupturing and this is made possible in part because of thecharacter of the backingmaterlals which are flexible, easily cut and possess that degree of .give? or slight extensibility and cornpressibility which is necessary to permitthe composite product to be rolled orcoiled without rupturingq- Q Such composite strip products, however, when fabricatedinwidths, for-example, of "about 27",

' provide substantial surface areas which, due primarily to ,the methods involved in the formation of the metal facing, are uneven and warped. Marked warping, occurs in the marginal zones of the strip. andsubstantially throughout the length thereof; :Undersuch conditions, the" strips when aflixed to a wall orother supporting surface with their-side edges in abutting relationship do not worked; may be cut, for example, with ordinary.

shears and may be rolled; coiled, bent and used practically withthe same facility as'ordinary A suitable and cheap, flexible, yieldable backings may be, for example, a loosely felted mineral fibre mat, a heavy woven fabric, latex impregnated paper, or a rollable, paper board product. The backing is affixed to'the thin metal facin by means of a suitable adhesive orcement, the

union or bonding of the facing andthe backing provide a neat appearance. Furthermore, warped areas occur in the central zones of the strips-s0 that, when-mounted, for example, 'on a flat surface, the strips have an uneven and slightly rolling or undulating appearance.

It is, therefore, the primary object of my invention to provide a method whereby themaior portion of thesurface of the facing, of such compositenproducts may be renderedfsubstantially even; and .unwarped and another object resides in providing a method for, treating s'uchproducts whereby not only are the above v results produced in an extremelycheap andlemcient manner but the properties of rollability, fflexibility and workability, above referred to, of the strip are preserved and, also, the appearance of the finished, strip product is in no way impaired but, on the other hand, rendered decorative.

The manner in which these andother objects are-attained in, the practice of the method of my invention as set forthin the following will best I pers'pective viewoi' acompo'site, strip product; I j i Fig. 2 is an enlarged; fragmentary sectional view of;a#marginal portion of; the composite product illustrating one mann'erfin' which it may be treated in accordance with my'invention;

. Fig. 3 is a fragmentary plan view of the strip f i product illustrating marginal a ,Fig. sis aviewsimilartorig'. 3 but illustrat scores thereinp ing an exemplaryarrangement'of a completely; wtreated strip product: [i Fig. 5 is a somewhat enlargedend elevation Fig. 6 is a view similar tolig. 2 but illustrat ing a modified manner of treating or scoring the I view of P18. 4;

strip product;

Fig. '1 illustrates the configuration of themar- 211131 portion of the strip shownamll 'ig g t ithasbeenscored;

Fig. fl illustrateslone form of apparatusfor carrrins out-my method? ther more," in the central portion: of the strip ,i "products will be found areas; such 'asdndicated by the shaded portions}, which jare' somewhat v 40 a parallehgroovesgor scores as indicated at 'l in j concave or depressedbelowthe-surroundingsurportions causing: the stripjto havefaniun 'dulating appesrancem least in p'arhin ,the' cen- K tral portions thereof. Strip products 'which are A v: .warped in this manner "do not presentadesirable 7 23843254 be understood byreference to the accompanying drawinginwhich--- 1 is asom'ewhat exaggeratedfiragmentary ofeb on-resistant" alloy steel and a backing of yieldable," flexible material.

formed. warping in the-marginal portions of the'strip'thereby providlng it with undulating comprising "depressions such as indicated 'jat' l with crests; or ridges I therebetweens. Fur

' Initially, when m the renewing, mam. although 1 will described mymethod with reference to subjecting the; strip product to a scoring operation,

I it is to be understood that, in accordanc'e'with 5 the principles of my invention, I may subject v the strip to operations which will produce deformatio'ns 1 of the characters above pointed out.

In treating astrip product; primarily for the purpose of removing or eliminating warping in strip extending in'a direction-generally lengthwise thereofandgsubstantially parallel to its say about 1% 'yr to 1"..' the strip product is preferably subjected to: the

lustrated m Fig. and, in facing is preferably caused to penetrate, the backing'fa distance; suilicient to} renderthe major portion ofthe' suriacelthereof substantially even and unwarpecl but insufli'cient materially to aflect the flexibility;;bqndability and rollability or the strip product. I Withithis arrangement, though the r oves ordeiormations may e rtendlength- Y wise ,of v the strip the 'y no not prevent rolling,

bending and coilingof the,strip in part; orin its entirety p r s ,g V

In order to p vide' the. central portion of' the strip-product with} substantially even surface vandeliminatev therein, where it ,of substantial. width .;similar linear deformations such as groovesvor depr'essionsQlike. those indicated at I, are formed inthe'e ntral zone offthe Y ."l'strip andi preferably eitend lengthwise thereof.

about; 24:}, 1 have .Ifound that two substantially ,Fig. 4 may be: formed in the central zone of the lstrip spaced about 6" apart. iScoresj may; be

formed in like manner as scores linftheifacing 'the'marginal zones thereofpa score," indicated at. his; formed in the marginal zoneof the edge. A score I'is preferably formedon each: sideioftheistrip and they are preferably spaced a' short distance'Ifrom the sideedges thereof,

The facing element of scoringoperationthereby forming substantially V-shapedfi grooves or depressions therein as 11- the strip product be of aIwidth of even; 'nietallic surface appearancefandof course, [42:01? the s p. oduct and, serve substantially if mounted'witlf-theirside edges inabuttingnre completely to eliminate undulations or :warping 1 ti nshipftheas'seinbly' of' adjacentgstrips'does- 'Ewhichmayotherwise;exist in;the ecentral aoneof not'a pearn'eat nororderlyb' 5;; ztlie;strip-nroduct.;l3y providingjthe stnpswith ;I have-found thatjit'is ible'substantially: {li l- ,035 J. and l the major portion1or subtoffeliminatesuch undesirableiwarped conditions lo stantiallwthe I entire surface of the, composite.

provide "the""stripawith a substantially f-=st s pi1nrqdllctysave of course, f!orjthe" scoresa smoothgeven surface by producing-a linear d s, therein. is substantially even'a'nd unwarpeld' as formatlonin or'admenr the zones of said stripf 'whe'r'ein warping occurs; It is only"'necessary "to 'produee'linear or line-like deformations in fthe'strip or'a deformationin a comparatively narrow zone {thereof althoush, of course, deformation's of greater width may be" formedzland fthese deformations preferably extend longitudimuy er the strips; when so arranged to'extend substantially tnrcughourthe length of the strip, I, f fisuch' deformations may Deformed-economically "a an at the same time; they enhance -to some.

iiieg' the-aesthetic properties oftheg flnished v f; 7 f I prefer to"createthesedefdrmations' by-score 'ing gthe' strip product. This operation may be ridges, of course, may be'linear-or line-like.

1 Obvious strips of appreciably ,les'se 7 width! as" than thatfiabove assumed] my "a provided with 'smooth,..even surfaces-by providing a smaller number of, scores therein and the, number and arrangement of such or linear deformationsmay; bee-varied a s desiredfor decorative *iv m andt e ke- V e v. 1

' In Figs. BandELYI'liave illustrated a second manner in ,1 which ,thei stripproducts may be 1, treatedf to. provide them with; smooth, substan- .tially' unwfarpdfl facing j elements. The'bacting jgelement Q 'of the i composite? iproduct" may' be scored, as indicatedf at practically "in those mnesflwhere .otherwise the grooves 1 would be formed on the reverseside-thereof. Eollowing thei'scoring operation, the marginal portion's -of the strip'between the scores l and the} edgeszwlll be sprung-"or slightly bent as illustrated Fig;

' ff-Tand, of coursefwhen. thesstripiis 'afllxedrtoa flat" surface, sthevmarginal'iportions be bent back substantially in ,the. planeof' the central portion of the'surface thereof. The protral zone of the backing 3 in substitution for.

the scores 8 above described.

Fig. 8 discloses one manner in which the strip products may be provided with grooves or scores.

surface of the facing element thereof is rendered substantially smooth and even over the major portion thereof while the deformations, scores or 'ridges, serve additionally to provide adesirable decorative effect, serving to reduce the plainness of a surface formed entirely of such strip'prod- I indicates a roller over which thestrip I mayv be passed and an arbor II may berotatably mounted thereabove, carrying scoring discs I2 and I3. The discs I2 are arranged to form the scores 1 in the marginal zones of the strip I .5 and discs I3 may be properly spaced as desired 1 true scope and spirit, of my invention in its 4 to form the scores 8 in the central zone of the strip product. Beveled, forming wheels I4 may be mounted on the arbor II adjacent the discs l2 for beveling the side; edges of the strip: I where it is desired to provide beveled-edge strips which will afford a more pronounced'line of (18-? marcation when mounted with their'side edges adjacent each other.

parent that the method above described may be economically and expediently carried out and the means employed may be of a fairly inexpen sive and simple construction such as that il-1.f

lustrated in Fig. 8.

In Fig. 9, I have illustrated the strip product, I

provided with a ridge I5 instead of a groove forf the purpose of providing the strip with a smooth. even surface over the major portion thereof v z-l To form a linear deformation of this character,

a roller I6 may be provided, as shown in Fig);

10, over which the strip I is passed with the facv ing element 2 thereof in contact with the-roller. An arbor I'I carrying a forming tool I8 maybe rotatably mounted over roller IS with the tool M in cooperative relationship to a circumferential groove I9 in the roller and in sufficiently close the strip I as illustrated. A multiplicity." of

grooves and forming tools, of course, may be provided simultaneously to form a plurality of ridges in the strip I in the same manner as the scoring operation is carried outwith the apf; I

paratus of Fig. 8. i It should be noted that the strip product be deformed in the manners above indicated to render the major portion of the strip surface strip. For example, assuming that the facing of a composite strip of a thickness of about fif'is' scored 0r grooved, such grooves may be'formedof a depth up to about 3 5" to provide a smooth,

unwarped surface over substantially the major portion of the strip and yet the strip may be 'fiexed, rolled and bent with substantially the same facility as before being grooved.

ucts arranged side by side in abutting relationship. I

. Ience, while I have dcscribedmy invention in j-itS preferred embodiments, it is to be understood that the w ordsswhich I haveused are words claims may be made without departing from the broader aspects. 7

What I claim is:

1. The method of eliminating undulations in a rollable composite strip product comprising a facing of thin gauge corrosion-resistant alloy steel and a backing of comparativelyyieldable I sheet material adhesively secured to said facing v which comprises producing a substantially linear deformation of said product'extending through said undulations in a direction longitudinally of said product; the depth of said linear deformation being insufiicientto prevent said product from being easily rolled in the direction thereof.

The method of eliminating undulations in a rollable composite strip product comprising a facing. of thin gauge corrosion-resistant alloy steel and a backing of comparatively yieldable sheet material adhesively'secured to said facing which comprises scoring saidproduct along aplurality of substantially parallel lines extending through said undulations and in a direction longitudinally of said product; the depth or extent of the deformations being insuflicient to prevent the easy longitudinal rolling of said 'product, proximity to produce the ridge deformation in I 3.'The method of eliminating. undulations in 'a rollable composite strip product" comprising a facing of thin gauge corrosion-resistant alloy steel and a backing of comparatively yieldable sheet material adhesively secured to said facing which comprises scoring'said product longitudinally and through the zones of the undulations therein; the depth of the scoring being insufficient to prevent the easy, longitudinal rolling of said product.

4. The method of eliminating undulations in the marginal zones of a rollable composite strip product comprising a facing of thin gauge corrosion-resistant alloy steel and a backing of com paratively yieldable sheet material adhesively.

secured to said facing which comprises scoring I said'product longitudinally along the marginal edges thereof; the depth of said scoring being insufficient to prevent said product from being readily rolled in a direction longitudinally there- CLEMENTS BATCHEILER.

' Bylinearly deforming the strip product, the'

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