US1582840A - Paper crinkling - Google Patents

Description

, 1,582,840 w. A. LORENZ PAPER CRINKLING Filed Nov. 5. 1920 2 Sheets-Sheet 1 Invenz/or: WZZZz'aznAZo renz g g m April 27 1926.

W. A. LORENZ PAPER CRINKLING Filed Nov. 5, 1920 2 Sheets-Sheet 2 h a l 7 e L U n A r w mm h MNW Z Patented Apr. 27,

UNITED srn Es PATENT OFFICE.

WILLIAM A. LORENZ, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE OTAKA FABRIC COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

rerun onmxnrno'.

App1ication filed November 5, 1920. Serial No. 422,006.

Toall whom'z't ooncemf 4 Be it known that I, 'WILLIAMA. LORE Z,

' a citizen of the United States, residing in p more set.

. State of. Connecticut,

train new and useful Improvements in Paper H.artford,iin the count of Hartford and ave invented oer- C rinkling, of which the following is a specification. v This invention relates to means for corrugating paper, and also to means for crin ling the paper crosswise of the corrugations therein. longitudinallyfof the .web and are comparatively deep, and it is one of the main objects of the invention-to produce these corru'ga tions without repturing or unduly weaken in'g'the paper, even though the width of the corrugated web remains about-the'same as that of the web in its original condition.

In effecting the foregoing improvement, no devices are used for preliminaril. athering the web widthwise into flutes,- ut the contour or form. The paper may then be subjected to one or more additional corrugating actions, by athe use of additional grooved rolls, (all of the rolls having the same pitch), so that finally the paper is brought to the desired corrugated condition, the corrugations being preferably deepened as the paper passes between the rolls in each pair, and at each step becoming firmer and Preferably heat is employed, partlyfor the purpose of diffusing the moisture more thoroughly throughout the sheet, for preparing it for subsequent corrugatin pressure. The heat niay be applied by at least two oorrugating cylinders, and the paper eventually preferably becomes dry, or at least warm,-- while still passing over the corrugating rolls. The final roll in the set is used for the purpose of driving: the

corrugated proper against a doctor-blade,- thereby c'rin hug the paper in transverse lines.

gated.

' Another feature of the invention relates a The corrugations extendto eiiecting variations in the crinkling, givingalternate bands of deep and shallow erinkles, thereby producing an ornamental configuration or pattern of crinkling, and sccuring other advantages. This result is secured by controlling the roll which runs upon the corrugated web'inproximity to the doctor-blade to aid in crushing the web against the blade. The roll is made to move to and fro regularly, away from and towardsthe doctor-blade, whereby the desired variation in the. crinkling is produced.

When the roll is c'losefto the blade,- the erinkles are accentuated and deep, while when the roll is remote from the blade, the

crinkles areless marked and shallow. Other features and advantages will hereinafter appear.

In the accompanyingdrawings, Figure 1 is a plan ofan apparatus em bodying several features f the invention above referred to in one form.

Figure 2 is a sectional side elevation taken at about the line 2E2 of Figure -1.- I

The rotation of a supp y roll 10 of paper is retarded by a'weighted stra" 11. 'roni this roll the web 12' may be Is up over an introductory roll 13 to a moistening appareltus'eoinprising two rolls 14, 15, over which the web runs in succession to expose its opposite sides tothe water, which is applied thereto by rolls 16,- 17. Said rolls 16,- .17 take up thewater from distributing rolls 18', which are immersed in waterla contained in troughs or tanksao, supplied by pipes 21 and 1yire-rider]! with overflow" pi es Each rol 18 is mounted upon an'eceentric 23, to adjust it to the rightrelation to the companion rolls 1'6,- 1 7'.- Each of the latter is mounted by means" of arms upon a rockshaft 25, from which extend horizontal arms .26,- carryiiig adjustable weights 2 7, to regu late the pressure of the moistening' rolls 16,

17 against the paper. a

A age 18% may be emplo ed to exten'd to the immersed roll 18, to gra note the amount.

of water which said roll 'icks ap end dis- I tributes to the wetting re] s 16 and 17.

From the wetting apparatus, the. web is led at 27= to a longitudinally eorrugating or inders or rolls 2'8, 29, 30" and 31, all having inter-meshing peripheral grooves 32', for roll ing the corrugations into the web. The gear flirting set,- omprising power-driven cyl-" gears 36 and 37 being fixed to the cylinders or drums 30, 29. For operating the wetting gatin rolls without the preliminary gather- Y '7 I paper.

roll 16, an idle pinion 40 is driven by gear 37 and drives a pinion 41 connected with said wetting roll. The companion roll 18 has apinion 42 in mesh with a pinion 43' fixed on the shaft of said roll 16. Said gear 37 also meshes with a pinion 44 on the cyl- I inder 28, and 4A meshes with an idle pinion 45 engaging a pinion 46 on the-shaft of wet-.

ting roll 17. On said shaft is a pinion 47 to mesh with a pinion 48 on the shaft of its companion roll 18.

It will be understood that the paper is made quite wet in order to permit it to be advanced at once to'the bite of the corruing 0 the paper into a fluted condition." If the paper 1s very absorbent, the described addition of the water thereto expands the performed without subjectin unduestrain, particularly i the corruga tions are relatively broad and shallow. -When paper is used that less readily absorbs water, it wouldbe necessary to subject it more thoroughly to, the dampening action, partly in order to expand it as much as possible, and-also to render it slightly plastic or flexible before running it into the corrugating rolls.

- The paper is sufilciently moistened and softened by the described wetting apparatus 46 to enable its fibres to yield readily to the" fluting action of the rolls 28 and 29, which form the paper into corrugations and incidentall stretch the paper widthwise, and hence the necessity of a preliminary gathering of the web into a fluted condition before entering therolls may be avoided, the corrugations being impressed in the paper without the latter losing in width.

.Some kinds of paper need to be. wetted only. to a slight extent, and in that case' the wetting may be performed by steam or by finely atomized water.

The paper 13 maintained in its corrugated condition as it is drawn around the second revolving cylinder 29,.and is further rolled or pressed between the latter and a third cylinder 30, thereby tending. to deepen the corru ations and compactthe paper in its lateral This efl ect upon the paper is increased by its being drawn tightly upon the revolving grooved cylinder 30, the latter furthermore co-operating with the fourth grooved cylinder 31 to improve and perfect the corrugatin of the sheet.

e cylinder 29 is preferably in the form .This allows the corrugating to be.

the paper tostretched corrugated condition.

of a large drum, since it ima'y be used for it into better condition for subsequent action by the corrugating rolls. The paper, moreover, by becoming heated has its subsequent dryi'n action facilitated or hastened. The cylin er 30 is also usedas a heating drum, beingsupplied by a-steam pipe 50,'thi's c l inder augmenting the heating effect and a so tending to dry out the paper;

The number of cylinders over which the paperis passed in order to roll it and'dry "it to the extentdesired, may be varied. 'It is preferred to wet the paper sufficiently to corruga-te it without subjecting-it to undue strain, and then to dry it partially or even render it substantially d by the timeit reaches the hereinafterescribed doctorblade for crinkling, .so that the paper at that-juncture will be warm, so as to set the paper inits crinkled condition.

It'will be understood that'the corrugation of the paper tends to stiffen it, so'that it resists b'eing bent to and fro around the cylinders 29, 30, 31,.being bent first in one direction and then in the opposite direction,

and then back to the'first direction. For

.both said cylinders, to hold the corrugated web thereagainst. This endless belt is designated as 51, and 'runsfrom the introductory side to the delivery side of the cylinder, and thenofi and around rolls 52, 53 and 54 to the introductory side again. The roll or pulley 53 ma be used for tightening the belt, and for t is purpose it may be mounted upon-an adjustab e arm 55. The belts hold the corrugatedweb to the-cylinders, or,-in other words co-o erate with the cylinders to perform the desired work u n the paper, an also conduce to the better ieating of the paper, inasmuch as it is kept in close contact with the heated surfaces of the drums. Evaporation takes place between the cylinder and. the beitwwith the result that the paper is wetted on both sides more thoroughly. The belt also causes the paper to absorb the moisture more thoroughly where double-ply --pa er or superposed webs are passed throng the machine. Pulley 52 is driven by a gear 5 6 meshing with 35; and pulley 54: by a pinion 57' meshing'wi-th 36.

It will be understood that by the time the web has begun to advance around the cylinder 31, it iswell compacted and heated;- and, if desired, this cylinder 31 may also be supplied with heating means (not shown). A grooved pressure roll 58 also co-operates with the grooved drum 31, said roll mesh-' ing with the drum and being placed at the delivery part thereof, and being power- I driven by means of a. pinion 59 meshing with gear 35. This roll tends to draw the roll tightly to the periphery of the drum 31, and hence to overcome the stiffening or straightening tendency of the web, due to its fluted condition and arising partly from the bending of the web in a reverse direction from its bend around cylinder 30.

The roll 58 not only holds the web around cylinder 31 and co-operates with said cylinder in giving the final roll to the corrugations in the web, but also aids the cylinder in pressing the web against a stationary doctor-blade 60, which is fixed upon a crossbar 61 mountedupon the machine frame 62, and is corrugated or grooved to fit the corrugations in the drum. By the co-operation of the rolls 31 and'58 and the doctor-blade, the paper is crinkled and passes at 63 onto a delivery belt 64.

To vary the sharpness and depth of thecrinkling, the roll 58 may be mounted-upon adjustable arms 65, whereby the position of the roll relatively to the doctor-blade may be varied. By adjusting the roll closer to the blade, the space between the roll and the blade is reduced so as to increase "the difliculty of the paper in passing between" them, and, owing to this added resistance, the

aper becomes more crushed, or the crinking becomes sharper and deeper; and by adjusting the roll away from the blade the opposite efi'ect may be produced. The arms 65 are preferably mounted upon an axle 66 of the cylinder 31, so that the roll 58 will always retain its proper relationship to the surface of the drum 31.

In order to produce adjustment or move ment of'the roll- 58 at predetermined intervals, so as to secure a regular variation in the characteristics of the crinkling and thereby produce an ornamental configuration of the product, the arms 65 may be oscillated by means of a revolving eccentric cal 67, upon which runs a roll 68, carried upon the end of an arm 69, which is rigid with arms 65. The cam may be rotated by means of an idle pinion 70, meshing with gear and driving a inion 71, which is connected to the shaft 2 of the eccentric cam. Therefore, once in each revolution of i shaft 7 2, the roll 58 is given a complete oscillation, a spring 73 serving to swing the roll away from the doctor-blade after the eccentric cam has forced the roll towards said blade. It will be understood, however, that roll 58 need not be made adjustable, either mechanically or otherwise in all cases.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

' heating means.

2. The combinationof means for support ing a web of paper in the form of a supply roll, a pair of longitudinally corrugating rolls to which the paper is directly led from the supply roll, and means between the sup-- ply roll and the corrugating rolls for Wetting the paper sufliciently to cause it to become plastic and stretchable, said rolls forming part of a set of pairs of corrugating 'rolls through which the paper is led, one of the rolls in said set being provided with heating.

means to diffuse the moisture evenly through out the web. v

3. The combination of means for supporting a web of paper in the form of a supply roll, a pair of longitudinally corrugating rolls to which the paper is directly led from the supply roll, and means between the sup-v ply roll and the corrugating rolls for wetting the paper sufliciently 'to cause it to become plastic and stretchable, "rolls forming;

part of a set of pairs of corrugatingrolls through which the paper is led, one ofthe rolls in said set being provided with heating means to diffuse the moisture evenly throughout the web, and another of said rolls being provided with heating means to aid in drying the paper.

4. The combination of means for supporting a web in the form of a supplyroll, a

pair of corrugating rolls to which said web is directly led, means between said corrugating rolls and supply roll for wettin the paper, and means for transversely cri'n (ling the corrugated web.

5. v The combination offmeans for supporting a web of paper in. the. form ofa supply roll, a pair of longitudinally;corrugating rolls to which the paper is directly led from the supply roll, means-between the supply roll and the corrugating rolls for wetting i the paper sufiiciently to cause it to become plastic and stretchable, said corrugating rolls being formed to stretch the paper lat-- erally while rolling wide corrugations therein,band means for crinklingthe corrugated we 6. The combination with means for supporting a supply roll, of corrugating rolls for rolling wide corrugations in the paper and incidentally stretching the same, wetting rolls upon opposite sides of the webbetween the corrugating rolls, and supply roll, :and mciians for supplying water to said wetting ro s. v- I 7, The Combination with means for supporting a supply roll, of corrugating'rolls for rolling .wide corrugations in the paper and incidentally stretching the same, wetting rolls upon opposite sides of the web be.-

- tween the, corrugating rolls and supply roll,

and means for supplying water to said wet"- ting rolls, said water-supplying means com prising troughs and rolls immersed in the troughs and running in contact with the said wetting rolls. 4

the paper.

Gil

vcrsely.

8. The combination with means for an porting a s upply roll,,of corrugating r01 3 for, rolling'wide corrugations in the paper and incidentally vstretching the same, wetting rolls upon opposite 'sides oif the web between the corrugating rolls and suppl roll, and means for supplying water-to said wetting rolls, means being providedior regulating the pressure of the wetting rolls against the paper to further corrugating action, and

means to crinkle the paper transversely. H 11. The-combination with ,means .t0 ,supply paper, of meansto wet the paper, two

' rolls between which the wet paper is corrugatedand incidentally stretched, a third roll to co-operate with one of said rolls to subject the aper to further corrugating action,

and a ourth roll to co-operate with the third roll in still further rolling the corru gations in the paper.

12. The combination with means tosupply paper, of means towet the p aper,*two rolls between which the wet paper is corrugated and incidentally stretched, athird roll ,to cooperate with one of said rolls to'subject the paper to further corrugating action, a fourth roll to co-operate with the third roll in still further" rolling the corrugations in the paper, and means for co operat ing with said fourth roll to crinkle the paper trans- 13. The combination with means to supp'ly a webof paper, of means to wet the paper, first and second rolls between which the wet paper is corrugated longitudinally of the web and incidentally stretched transversely, a, third .roll( to co-operate with one of said rolls to subject the paper to further corrugatin g. action, said second roll being in the formof a drum, and means to 'heat the drum. i

14.The combination with means to'supply a web of aper, of means ito wet the paper, first an second rolls between which the wet paper is corrugated longitudinally -'of the web and incidentally stretched transversely, and a third roll to co-operate with one of said rolls to subject the paper tov further corrugating action, said second and "third rolls being in the form of drums, and

both'beingjprovided with heating means.

' 15. In a paper-crinkling machine, the combination with a cylinder and a doctor blade or device to co-operate therewith. of

a pressure roll or device to hold the paper against the c linder in the. vicinity of the doctor-bla e, and means to adjust said. roll towards and away from the doctorblade.

16:11: a paper-crinkling machine, the combination with a cylinder and a doctor.- blade or device to co-operatetherewith, of a pressure roll, or device to hold the paper against the cylinder in' the vicinity; of

the doctor-blade, and means operatively connected to said cylinder for moving said roll towards and away fiom the doctor-blade.

17. In a- 'paper-crinkling machine, the combination with a cylinder anda doctorblade or device to co-operate therewith, of

a pressure roll or device tohold the paper against the. cylinder in the vicinity of the doctor-blade, and revoluble cam mechanism connected-to said cylinder to move said roll towards and away from the doctorblade;

18. In aicrinlrling machine, the combina tion with a cylinder, a doctor-blade, and a roll' to pre:s thepaper against the cylinder in the vicinity of the doctor-blade, of means for automatically effecting variations in the relationship of the roll, doctor-blade and linder. l9. The combination of means for supporting a web ofrpaper'inthe form of a supply roll, a set of longitudinal-1y corrugating rolls to which the paper is directly led from the supply roll, means between the supply roll and the corrugating rolls for wetting the paper-sufiiciently to cause it to become plastic and stretchable, said corrugating rolls being formed to stretch the paper la'terally while the rolling wide corrugations therein, a doctor blade to' co-operate with the final roll to crinkle the web, and a corrugated or grooved roll to run upon said final roll in the vicinity of the doctor-blade.

20. The combination of means for supportin" a web of paper in the form of a supply ro a set of longitudinally corrugating rolls to which the paper is directly led from the therein, a doctor-blade to co-operate with" the final roll to crinkle the web, and a corrugated or grooved roll to run upon said final roll in the vicinity of the doctor-blade, the last-mentioned roll provided with means whereby it may be adjusted towards and from the doctor-blade. I 7

2L In a crinkling machine, the combination of a cylinder, a doctor-blade, a roll to press the paper against the cylinder in the vicinity of the doctor-blade, arms whereon said roll is journaled, said arms'mounted to rock upon. the axis of said cylinder, and meansctorock said arms. I

' 22. In a crinkling machine, the combination ofa cylinder, a doctor-blade, a roll to vicinity of t e doctor-blade, arms. whereon said roll is journaled, saidarms mounted to rock upon theaxis of said cylinder, a powerdriven cam to rock saidarms in one direction, and a spring to return them;

The combination with a' set of elements co-operating to crinkle a sheet transversely, of, mechanism for automatically effecting variations in said set of elements, to secure a regular variation in the characteristics of the crinkling. 7 '24. The combination with means for corrugating a web longitudinally, a set of elements including a octor-blade, a corrugating crinkling cylinder, and a pressure roll for producing zigzag crinkling transversely of the Web, of mechanism for automatically deflecting variations in saidsetof elements, to secure a regular variation in the characteristics of the crinkling.

L AM AQLORENIZI.

press' the pa er against the cylinder in the

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