US3072124A

US3072124A - Diaper

Info

Publication number: US3072124A
Application number: US179273A
Authority: US
Inventors: Samuel J Jamison
Original assignee: Chicopee Manufacturing Corp
Current assignee: Chicopee Manufacturing Corp
Priority date: 1962-03-05
Filing date: 1962-03-05
Publication date: 1963-01-08
Anticipated expiration: 1980-01-08

Description

S. J. JAMISON Jan 8, I963 DIAPER 2 Sheets-Sheet 1 Original Filed Oct. 28. 1959 ATIIORNEY Jag. s, 1963 s. J. JAMISON 3,072,124

DIAPER Original Filed Oct. 28, 1959 2 Sheets-Sheet 2 United rates BdlTl'ZdZd- Patented Jan. 8, 1963 3,072,124 DIAPER Samuel J. Jamison, East Brunswick, Ni, assiguor to Chicopee Manufacturing Corporation, a corporation of Massachusetts Continuation of application Ser. No. 849,414, Oct. 28, 1959. This application Mar. 5, 1962, Ser. No. 179,273 13 Ciaims. (Cl. 128-234) The present invention relates to prefolded woven diapers, more particularly to prefolded diapers in the form of multiple layers of absorbent diaper cloth of a material such as cotton.

This application is a continuation of my copending application Serial Number 849,414, filed October 28, 1959 and now abandoned, which, in turn, in a continuation-inpart of my application Serial Number 732,875, filed May 5, 1958, and now abandoned.

Woven diapers for infants are sold in a variety of forms and in various weaves. They are available mainly in two forms, i.e., as a single or multiple layer blank adapted to be folded into a pad to be fitted on an infant or child, and in a prefolded or shaped pad form which already is adapted to fit the child. These diapers presently are available mainly in three types, heavyweight birds-eyc, single layer flannel, and multiple layer gauze diaper cloth. Rectangular multiple layer diapers, such as those formed from gauze diaper cloth, are relatively new and have been introduced in quantities only in the last ten years. However, due to their superior performance characteristics, as compared with the heavyweight birds-eye and fiannel diapers, they now supply over 50 percent of the total woven diaper market, and it is expected that such multiple layer diapers eventually may supplant the old fashioned single layer diapers.

The multiple layer diaper, as woven, is in the form of an elongated rectangular blank which is folded to form a smaller rectangular pad for application to babies and young children. For instance, the diaper blank may be folded transversely to superimpose thirds of its area and form a diaper pad having a length corresponding to the width of the blank prior to folding. When a two layer gauze diaper of this type is folded in thirds, as described above. a six layer diaper pad is formed which possesses superior softness, absorbency, drying characteristics, pinability, and the like, as compared with pads formed from the above-described single layer diapers.

In order to facilitate diapering as well as handling and washing by diaper services and consumers, gauze diapers have been folded by diaper manufacturers and sewn or otherwise secured in the folded position to provide a prefolded diaper or diaper pad which is ready to be applied to a baby or child. The prefolded gauze diapers possess all the advantages that are mentioned above for the folded multiple layer gauze diaper blank. However, when a prefolded diaper is formed merely by folding a two layer gauze diaper blank into thirds to form a six layer diaper pad, as described above, the material of the diaper is distributed more or less uniformly throughout the pad and not centrally of the diaper where it is most needed. Gannon Patent 2,600,634, granted June 17, 1952, described a prefolded diaper which solves this problem. In the Gannon structure the blank is folded in such a way that a heavier multiple layer panel is formed in the center of the diaper extending along its longitudinal center line. According to Gannon, side panels are created on both sides of the central panel and if the sheet, or blank 10, of Gannon is assumed to be a two layer gauze diaper fabric, then there will be eight layers of gauze diaper fabric in the central panel of Gannon and four layers in each of the side panels. This concentrates the absorbency and bulk of the diaper along its longitudinal center line where it is most needed. Because its bulk is so located, the Gannon diaper may be fitted much more easily on babies or children of various sizes, and because of the relatively low bulk in the side panels, it may be pinned, or secured, more readily than comparable prefolded diapers. Thus, a prefolded gauze diaper according to Gannon possesses, not only all the superior performance characteristics of gauze diapers in general, but the advantages of prefolded diapers and the unique qualities of Gannon, i.e., the concentration of absorbency where needed, capacity for easier fitting on babies or children of various sizes, and improved pinability.

Prefolded diapers have one general disadvantage, i.e., a tendency to abrade and wear out in the center of the diaper and along its longitudinal edges. Generally speaking, the relatively soft gauze diaper cloth will wear more easily than the above-mentioned heavyweight birds-eye and flannel diaper fabrics. In addition, however, when gauze diaper cloth is folded and sewn so that certain portions of the diaper fabric are held in a fixed position at the points of maximum wear, their vulnerability is increased and wear becomes more of a problem.

Gauze diapers conventionally are sold in two classes: lightweight and heavyweight. The overall, or total, ab-

' sorbing capacity of a prefolded gauze diaper is governed by the total amount by weight of cotton in the diaper. For this reason, to assure adequate absorbing capacity, a minimum practical absorbing capacity for prefolded gauze diapers has become established at approximately 45 grams of cotton before washing. Any change in construction that would reduce the total weight of the diaper below about 45 grams, therefore, would be unacceptable for even lightweight gauze diapers. On the other hand, gauze diapers above a certain weight, say about 65 grams, before washing, would be prohibitively expensive because of the great amount of cotton they contain.

It is common for one set of diapers to be used on an infant from birth until the end of the diapering age. For this reason, a standard size for the diaper pad, i.e., the diaper in prefolded form, has become established. This standard size ranges between about 13.5 inches in width and 20.5 inches in length and 15.5 inches in width and 22.5 inches in length, prior to washing. Size is considerably reduced after several washings, due to shrinkage. For instance, a 14 x 21 inch prefolded gauze diaper may be reduced to a 12 x 18 diaper after, say, 10 washes, and this would be considered good from the standpoint of shrinkage.

The present invention contemplates a prefolded. rectangular multiple layer woven diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge portion of the diaper. Each of the side panels, in turn, comprises a top and bottom half of diaper fabric. The longitudinal edge portions of the diaper are folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the other half of the adjacent side panel. and the central panel comprises superimposed top, middle and bottom sections of diaper fabric, each of which connects with one or more of the halves of the side panels.

According to one embodiment of the invention, a wearresistant prefolded rectangular multiple layer diaper is provided which is completely balanced. The diaper is woven as a unit with its warp yarns extending longitudi nally thereof and its filling yarns extending transversely and with selvages along its warpwise edges. The longitudinal edge portions and the side and central panels are located and folded with respect to one another in such a way that one of the selvages extends along one of the longitudinal edges of the central panel and the other of the selvages extends along the other of the longitudinal edges of the central panel with the result that the only permanent folds in the diaper are along its opposite longitudinal edges, thereby providing a prefolded diaper which is completely symmetrical about its longitudinal center line and therefore completely balanced from a shrinkage point of View. To accomplish this, the top section of the central panel is woven integral with the top halves of the side panels, the middle half of the central panel is woven integral with the bottom half of one of the side panels, and the bottom section or" the central panel is woven integral with the bottom half of the other of the side panels. To provide the desired wear resistance, the fabric densities of the individual top and bottom layers of the central panel and the individual U-shaped outer layers of the longitudinal edge portions are substantially greater than a fabric density in the range of conventional gauze diaper cloth. In one form, the warp end count of the individual top and bottom layers of the central panel and the outer layer of the U-shaped longitudinal edge portion is at least about 1 /2 times a Warp end count in the range of conventional gauze diaper cloth. In this form the multiple layer central panel is heavier and possesses greater absorptive capacity than either of the multiple layer side panels.

According to another embodiment of the invention, each of the lon itudinal edge portions and each of the sections of the central panel comprises at least two layers of diaper fabric, and the fabric densities of the individual top and bottom layers of the central panel and the individual U-shaped outer layers of the longitudinal edge portions is substantially greater than a fabric density in the range of conventional gauze diaper cloth to provide wear-resistant surfaces in those portions of the diaper which are most vulnerable to wearing forces. Grdinarily, also, the fabric density of the individual top and bottom layers of the central panel and the individual tJ-shaped outer layers of the longitudinal edge portions is substantially greater than that of the outer layers of the top and bottom halves of the side panels. Normally, the warp end count of the former is approximately 1 /2 times that of the latter.

According to still another embodiment of the invention, each of the sections of the central panel comprises at least two layers of diaper fabric and either the U-shaped edge portions of the diaper or the top and bottom halves of the side panels also comprise two layers of diaper fabric; and the two layers of diaper fabric of each of the sections of the central panel and each of the longitudinal edge portions or each of the top and bottom halves of the side panels, as the case may be, are woven together along the edges of each panel and/or each longitudinal edge portion by at least one interlacing yarn to form lines of interlacing which define the longitudinal edges of each of the sections or halves of the panels and each of the longitudinal edge portions.

According to a preferred embodiment of the invention, a prefolded, rectangular multiple layer woven diaper is provided wherein the outer layers of the diaper possess substantially higher fabric density than the inner layers of the diaper in corresponding panels or edge portions thereof, thereby facilitating provision for increased wear resistance without detracting from the total weight of the diaper.. This may be accomplished by increasing the warp end count in the outer layers of the central panels and the U-shaped edge portions and decreasing the warp count of the immediately adjacent individual interior layers of the central panel and the edge portions while maintaining the outer layers of the side panels within the range of fabric density for conventional gauze diaper cloth. The filling count of the inner layers of the side panels may be considerably less than that of the outer layers. The same is true of the immediately adjacent interior layers of the central panels. Thus the density of all of the exterior layers of the diaper may be increased considerably without adding anything to the total weight of the diaper.

Qther and further objects of the invention will be apparent from the following description and claims taken together with the drawings wherein:

FIG. 1 is a view in perspective of a prefolded diaper according to one embodiment of the invention;

FIG. 2 is an enlarged view partly in section and partly in perspective taken along the line 22 of FIG. 1;

FlG. 3 is a still further enlarged view of the portion in the circle of FIG. 2 showing the relationship between one of the folded longitudinal edges of the diaper and the top and bottom halves of the adjacent side panel;

PEG. 4 is a somewhat reduced fragmental schematic plan view of a strip of diaper blanks according to the embodiment of FIG. 1, as they are woven;

FIG. 5 is a view in perspective of the diaper of FIG. 1 as its ends are being folded over the center of the diaper to superimpose the respective portions of the central and side panels of the diaper;

Fit 6 is a greatly enlarged fragmental plan view of a portion of the diaper of FIG. 1 showing variations in fabric density and end count between various portions of the diaper; and

FIG. 7 is a view, similar to FIG. 2, showing a diaper according to still a different embodiment of this invention.

Referring to FEGS. 13 of the drawings, there is shown a prefolded rectangular multiple layer woven diaper 11 which comprises a longitudinally extending central panel 12 and

side panels

13 and 14 on each side of the central panel between the central panel 12 and the

longitudinal edging portions

15 and 16 of the diaper. The central panel 12 of the diaper comprises superimposed top, middle, and bottom sections l7, l8, and 1t, respectively, while the

side panels

13 and 14 comprise top and

bottom halves

21 and 22 and 23 and 24, respectively. Each of the sections of the central panel and the top and bottom halves of the side panels is made up of two layers of diaper fabric. There are only two permanent folds in the diaper of FXGS. 1-2 and these form the

longitudinal edging portions

15 and 16 of the diaper. Each of these longitudinal edges is folded in the shape of a U and is connected to the adjacent side panel in the same way. Referring to the edge portion to in FIGS. 2 and 3, for example, one of its legs 26 is connected to the top half 23 of the adjacent side panel and the other of its legs 27 is connected to the bottom half 24 of this panel. The individual U: shaped edging

portions

15 and 16 of the diaper also comprise two layers of diaper cloth.

The diaper ill is woven as a unit with its warp yarns extending longitudinally of the diaper pad of FIGS. 1-3, or parallel to the

edge portions

15 and 16, and its filling yarns extending transversely thereof. It is folded from an elongated rectangular blank and then sewn together. As shown in FIG. 4, the diaper blanks are woven in a continuous strip 28 having

selvages

29 and 31 along its edges.

The blanks are formed by cutting the strip fillingwise from selvage to selvage along transversely extending lines 3t) which are spaced warpwise at intervals along the strip 28 corresponding to the desired diaper pad length. T top, middle, and

bottom sections

17, 13, and w of the central panel 12. and the top and

bottom halves

21 and 22 and 23 and 2,4 of the

side panels

13 and 14, respec tively, are woven as

bands

17a, 18a, and 19a, 21a, and 22a, and 23a, and 24a, respectively, extending warpwise or" the strip in spaced relation fillingwise thereof. In addition, the edging

portions

15 and 16 of the diaper, i.e., those which, in the pad, are folded in the shape of a U, are woven in the strip as narrow spaced bands 15a and 15:: respectively which also extendwarpwise of the strip. The respective bands are spaced in such a way that when a blank is cut from the strip 23, the bands, representing the top, middle, and bottom sections of the central panel and the top and bottom halves of the side panels, are.

superimposed in their proper relation merely by folding the blank about the narrow edging portions and 16. This is illustrated in FIG. 5 wherein the diaper blank corresponding to the prefolded diaper pad 111 of PEG. 1 is shown after it has been cut from the strip 23 and the operation of folding the ends of the blank about the edging portions 15 and 2.6 has just begun. Referring in particular to FIGS. 2 and 5 of the drawings, the order of occurrence of the various portions of the blank, beginning at one selvage 29 of the blank is as follows: the bottom section 19 of the central panel, the bottom half 22 of the first side panel, the first edging portion 15, the top half 21 of the first side panel, the top section 17 of the central panel, the top half 23 of the second side panel, the second edging portion 16, the bottom half 24 of the second side panel, the middle section 18 of the central panel, and finally, the other selvage 31. Each of the halves 21 through 24- of the

side panels

13 and 14 and the sections 17 through 19 of the central panel 12 is woven in two layers which are woven together along their longitudinal edges at 32, 33, 34, and 35 where they join each other by at least one interlacing yarn to form lines of interlacing defining the longitudinal edges of their respective panels. They also are woven together in this way along the longitudinal edges of the reinforcing

portions

15 and 15 adjacent the longitudinal edges of the diaper. The top sections 17 of the central panel 12 is woven integral with and adioins the

top halves

21 and 23 of the

side panels

13 and 14, the middle section 18 of the central panel is woven integral with and adjoins the bottom half 2:2- or" the second side panel 14, and the bottom section 19 of the central panel 12 is woven integral with and adjoins the bottom half 22 of the first side panel 13. Referring to PEG. 5, it will be seen that the various sections of the central panel 32 and the top and bottom halves of the

side panels

13 and 14 are so spaced that when the ends of the blank are folded about the warpwise extending edging portions and 16, they will be superimposed in their proper relation to form the central panel and the side panels, respectively. The edging

portions

15 and 16, in turn, will form the Ushaped longitudinal edges of the diaper, as shown in FlGS. 2 and 3. As shown in FIG. 2, one of the selvages 31, of the diaper fabric is in the middle section it of the central panel 12 extending along one of the longitudinal edges of the central panel and the other selvage 29 is in the bottom section 19 of the central panel extending along the other longitudinal edge of this panel.

In FIG. 7 there is shown a diaper 37 according to a somewhat different embodiment of the invention which is exactly the same in its general construction as the diaper of FIGS. 1-3, with the exception that the top, middle, and bottom sections 38, 39, and 41, respectively, of the central panel 42 of the diaper of FIG. 7 each comprises three layers of diaper fabric as compared with the two layer sections of FIGS. l-3; thereby providing a nine layer central panel as compared with a six layer central panel for the diaper of PEG. l-3. in addition, as will be brought out hereinafter in the specification, the relationships between the fabric density, or weights, of the various layers in the central and side panels of the diaper of KG. 7 may be somewhat di'lferent from those of FlGS. 1-3.

Normally, diapers of the type described are woven of cotton fibers in a conventional manner. However, this invention is not limited to any particular kind of material,

as long as the material used is at least the equivalent of the cotton fibers normally employed for this purpose in absorbency, hand, strength, etc. All data given for yarn size and the like in this specification is in the cotton systern.

As shown in FIGS. 2 and 7, the different portions of the three panels of these diapers are fixed in their proper relationship to one another by lines of

stitching

43 and 44, respectively extending through the diaper adjacent the longitudinal edges of the

central panels

12 and 42,

respectively. In the embodiment of FIGS. 1-5 the ends of the various layers of the diaper are secured together, as shown in FIG. 1, by oversearning 45 along the trans verse edges of the diaper. in another form of the invention, not shown, the various layers of diaper fabric may be woven together in such a way as to form narrow single layer pinking bands, or bars, of denser fabric extending transversely of the strip 23 along the cutting lines 3h. Then, the diaper blanks are cut from the strip by pinning along the pinking bars, as is well known in the art, thereby providing single layer pinked edges extending perpendicular to the selvages of the blank. When such a diaper is folded and sewn together along the aforesaid lines of stitching 43, for instance, it is not necessary that the ends of the diaper be secured by overseaming since the denser single layer pinked edges will not unravel or pull and are quite wear resistant.

The prefolded rectangular multiple layer woven diapers in FIGS. l-3 and 7 are similar in characteristics and performance to the prefolded gauze diapers of the prior art, but possess improved characteristics over prior art diapers of the same type. These improved characteristics include improved abrasion resistance at the points of maximum wear, i.e., in the top and

bottom layers

46 and 47 and 48 and 49 of the

central panels

12 and 42 in FIGS. 3 and 7, respectively, and along the exterior surfaces of the U-shaped folded edging

portions

15 and 16 in FIG. 2, and 52 and 53 in FIG. 7, respectively, and a simplified construction which allows them to be putup in a single operation, thereby effecting an appreciable savings in cost. These improved characteristics are obtained without sacrificing any of the advantages of the prior art prefolded gauze diapers which are woven of gauze diaper fabric throughout their structure. Thus, total diaper weight and the size of the resulting diaper pad of FIGS. 1-3 and/or FIG. 7 may be kept within acceptable limits for prefolded gauze diapers. The abrasion resistance of the top and bottom layers of the

central panels

12 and 42 and the individual outside layers of the

U-shaped edging portions

15, 16, 52 and 53 is increased by increasing the fabric density of these layers Without decreasing the smoothness, softness, or abrasion resistance of the other exposed surfaces of the diaper appreciably. This is accomplished by increasing the cover or fabric density of the individual top and bottom layers of the

central panels

12 and 42 and the out side layers of the edging portions 15, 1 5, 52 and 53 to a point where it is substantially greater than a fabric density in the range of conventional gauze diaper cloth. When the end counts of the individual top and

bottom layers

55 and 56, in FIG. 2, and 57 and 58, in FIG. 7, of the

side panels

13 and 14, in PEG. 2, and 59 and 61 in FIG. 7, respectively, are in the range of gauze diaper cloth, the end counts of the top and bottom layers of the

central panels

12 and 42 and the outside layers of the edging portions 15, M, 52 and 53 may be increased to a point where they are substantially greater than the end counts of the

layers

55 and 56 to establish this relationship.

In the preferred form of the invention shown in the drawings, the weight of the inner layers 62 in FIG. 2 and 63 in FIG. 7 of the respective side panels and at least some of the

inner layers

64 and 65, respectively, of the individual central panels of the diapers of these figures is reduced to provide material for the increased density in the top and bottom layers 46 and 47 in FIG. 2 and 48 and 49 in FIG. 7 of the individual

central panels

12 and 42, respectively. Thus, the weight, or density of the side panels is reduced as compared with a prefolded diaper folded according to Gannon 2,600,634 from a multiple layer blank completely woven of gauze diaper cloth.

In the diapers of FIGS. l-3 and 7, the

central panels

12 and 42 are much greater in Weight than either of their

respective side panels

13 and 14 and 59 and 61 and preferably the weight of each of the central panels is at least about as great as the weight of the remainder of the individual diapers. Thus, the absorbing capacity and bulk of each of these diapers is concentrated in the central panel and the side panels have relatively low bulk, even less than is possessed by the best of the prior art prefolded gauze diapers, thereby allowing the diapers to be fitted easily on babies or children of various sizes and pinned in position with even greater facility.

To assure acceptable softness, smoothness and wear resistance in the exposed surfaces of the side panels, they preferably are woven of a relatively light and open, gauzelike, gauze diaper fabric which normally, is either plain woven, or dobby woven in a birds-eye pattern. Gauze diaper fabric according to this invention may be woven with an end count of between about 32-48 in the warp and 3252 in the filling from yarns of about s-30s in the warp and s45s in the filling. Normally, in such fabrics, the twist multiplier of both the warp and the filling yarns is less than about 4.75.

Referring to the embodiment of FIGURE 2, for examplc, to provide a fabric density in the top and bottom layers 46 and 47 of the central panel 12 and in the outside layers, 54 in 1G. 3, of the edging

portions

15 and 16 of the diaper which is substantially greater than that of the top and bottom layers 55 and 5'6 of the

side panels

13 and 14, the warp and count of the former, i.e., the layers 46 and 47 is at least about one and onehalf (1 /2) times greater than that of the latter. The filling end count in the top and bottom layers 46 and 47 of the central panel 12 and the outside layers 54 of the edging portions and 16 may be approximately equal to that of the top and bottom layers of the

side panels

13 and 14. However, it normally is not desirable that the filling end count in the top and bottom layers of the central panel and the outside layer of the edging portions be any greater than that of the top and bottom layers of the side panels. To provide additional weight in the central panel 12 and reduce the weight of the

side panels

13 and 14 in the preferred form of this invention shown, the filling end count of the inner or remaining layers 62 of the side panels, is reduced so that the filling count of the individual top and bottom layers and 56 of the side panels is substantially greater than that of the remaining layers 62, as mentioned above, preferably, at least about twice that of the individual inner layers 62. Similarly, it is preferred that the warp end count of the individual top and bottom layers 46 and 47 of the central panel 12 and the individual outside layers 54 of the

U-shaped edging portions

15 and 16 be approximately twice that of the immediately adjacent

inner layers

64 and 66 of the central panel and the edging portions, respectively.

FIG. 6 illustrates a preferred density and end count relationship between the various layers of the diaper of FIGS. l3, as well as a desirable weave for the most abrasion resistant portion of the diaper. in FIG. 6 all of the warp yarns and all of the filling yarns are of the same size, or number. In diapers of this type, which normally are not woven on box looms, it is a practical necessity that all of the filling yarns be of the same size. Similarly, it is impractical to use different size warp yarns in any regular pattern in the same diaper since this would require the use of multiple beams, a costly arrangement in an operation where cost is of the utmost importance. As shown in FIG. 6, the warp end count of the individual top layer 1 6 of the central panel 12 and the warp end count of the individual outside layer 54 of the edging portion 16 each is approximately twice that of either the top layer 55 of the side panel 12 or either of the immediately adjacent

interior layers

64 or 66 of the centralpanel 12 or the edging portion 16, respectively. The filling end count in the top layer 55 of the side panel 14 is approximately twice that of the filling end count of the inner layer 62 in the panel 14- and of the aforementioned inner layer 64!- of the central panel Q a 12. Referring to FIGURE 2, the bottom layer 47 and one of the inner layers 68 of the central panel 12 is of the same construction, as far as end count and yarn size are concerned, as the top layer 46 thereof. The inner layer 68 is the third one from the bottom of the central panel 32, or the bottom layer of the middle section 18 of the central panel. This arrangement provides a conveniently balanced structure for weaving and put-up and is helpful in distributing the weight of the diaper between the central and side panels. The other layer in the middle section id of the central panel is of the same warp and filling end count as the inner layers of the central panel 12 which are immediately adjacent the top and bottom layers 46 and 47. Similarly, the warp and filling counts of the individual bottom layers 56 of the

side panels

13 and 14 are the same as for the individual top layers 55 shown in FIG. 6. The counts for the remaining inner layer 62 of the side panels 1? and i4 and the interior layer 66 of the edging

portions

15 and 16 of the diaper also are the same as shown for the

layers

62 and 66 in FIGURE 6. The warp and filling yarns in the top and bottom layers 46 and 47 of the central panel 12 and in the outside layer 54 of the edging

portions

15 and 16 are interwoven in a 3/1 broken twill as shown in the encircled portion P of FIG. 6 for the top layer 26. All of the other layers in the diaper are woven in a plain weave.

According to this preferred embodiment, the fabric density of the individual top and

bottom layers

46 and 57 of the central panel 12 is substantially greater than that of the individual top and

bottom layers

55 and 56 of the

side panels

13 and 14; the fabric density of the top and

bottom layers

15 and 16 of the side panels is at another value which, in turn, is substantially greater than that of the remaining layers in the diaper with the exception of the bottom layer 68 of the middle section 18 of the central panel, this section being of the same construction as the top and bottom layers of the central panel; and the remaining layers of the diaper, i.e., the interior layers of the edging portions, the side panels, and the central panel, with the exception of the middle layer 68 in the central panel, are all of the same construction which is substantially lighter and more open than the rest of the diaper and somewhat below the noranal range for gauze diaper fabric. The above-described relationships between the fabric densities and the end counts of the various layers of the diaper of FIGS. 1-6 is illustrative. These relationships can be varied and still allow the provision of an improved diaper in accordance with this invention. This will be apparent from the following examples.

Example 1 A prefolded cotton diaper is woven in strip form, as shown in FIG. 4. Diaper blanks are cut from the strip, folded, and sewn together as shown in M65. 1-5 to form The resulting diaper pad is soft and smooth on all of its surfaces and possesses excellent absorbency. The top and bottom layers of the central panel of this diaper and the outside layers of the U-shaped edging portions thereof possess excellent abrasion resistance. This diaper, due to its simple folded construction, may be cut, folded, and sewn more easily than prior art prefolded diapers of comparable absorbency and weight distribution and therefore can be put-up with savings in cost.

Example II A prefolded cotton diaper formed as described in Example I from a diaper blank having the same weight and size and with yarns having the same yarn numbers as the blank of Example I. The end count and weave arrangement is as follows:

This diaper also is smooth and soft and possesses superior absorbency. Its abrasion resistance in the areas of maximum wear, i.e., the top and bottom layers of the central panel and in the outside layers of the edging portions, is excellent. As for the diaper of Example I, the simplified construction of this diaper allows it to be cut, folded, and sewn moreeasily in a single operation thereby reducing its cost appreciably.

Example 111 A prefolded cotton diaper according to the embodiment of FF 7 is formed in the same way as described in connection with Example I, the major difference between the diaper of this example and that of Example I being in the number of layers, three in this example and two in Example l, in each of the sections of tne central panel. The resulting prefolded diaper has the following construction characteristics:

Finished weight 64 grams Put-up width 15 in. Put-up length 22in. Warp yarns No 25's Filling yarns No 413 End Counts in Yarns/inch Diaper Layer Weave Warp Filling (a) Top and bottom layers of central 60 36 2/1 Broken panel and outside layers ofedging por- Twill. tions (as well as bottom layer of middle section of central panel). (27) Other interior layers of central panel" 30 18 Plain. Top and bottom layers of side panels 40 48 Plain. ((1) Interior layers of side panels 40 24 Plain.

Again, the top and bottom layers of the central panel and the outside layers of the edging portions possess excellent abrasion resistance and the put-up of the resulting diaper is relatively simple thereby enabling savings in cost. The surfaces of the diaper are relatively soft and smooth and its absorbency is even somewhat higher than the diapers of Examples I and 11 due to the greater number of layers, i.e., nine it possesses as compared with the dia ers of Examples I and H, each of which have six layers in the central panel.

W Example IV A prefolded cotton diaper formed as described in Example i from a diaper blank having the same weight and size with yarns having the same yarn numbers as the blank of Example I. The end count and weave arrangement is as follows:

The top and bottom layers of the central panel and the outside layers of the edging portions possess excellent abrasion resistance and the put-up of the resulting diaper is relatively simple thereby enabling savings in cost as in the foregoing examples.

Having now described the invention in specific detail and exemplified the manner in which it .may be carried into practice, it will be readily apparent to those skilled in the art that innumerable variations, applications, modifications, and extensions of the basic principles involved may be made without departing from its spirit and scope.

The invention claimed is:

1. A prefolded, rectangular multiple layer woven diaper weighing between about 45 and 65 grams and being between about 13.5 inches wide and 20.5 inches long and 15.5 inches wide and 22.5 inches long, before wash ing, and which comprises a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its: Warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the warp end count in the individual top and bottom layers of the central panel being substantially greater than the warp end count in the individualtop and bottom layers of said side panels and at least the immediately adjacent interior layers of said central panel, the filling end count in the individual top and bottom layers of said side panels being substantially greater than the filling end count of the individual remaining layers in said side panels, and the end count being between about 32 and 48 in the warp and 32 and 52 in the filling, and the yarns being between about 20s and 30s in the warp and 25s and 45s in the filling in size in the individual top and bottom layers of said side panels.

2. A prefolded diaper according to claim 1 wherein the warp end count in the individual top and bottom layers of the central panel is at least about one and a half (1 /2) times that of the individual top and bottom layers of the side panels.

3. A prefolded diaper according to claim 1 wherein the warp end count in the outer fabric layer of each of said U-shaped edges is substantially greater than the warp end count in the individual top and bottom layers of said side panels.

4. A prefolded, rectangular multiple layer woven diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, said central panel comprising superimposed top, middle and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its Warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the fabric density of the individual top and bottom layers of the central panel being substantially greater than the fabric density of the individual top and bottom layers of said side panels, the fabric density of the individual top and bottom layers of said side panels being substantially greater than the fabric density of the individual remaining layers in said side panels, and the individual top and the bottom layers of said side panels having a fabric density in the range of conventional gauze diaper cloth.

5. A prefolded diaper according to claim 4 wherein the fabric density in the outer fabric layer of each of said U-shaped edges is substantially greater than the fabric density of each of the individual top and bottom layers of said side panels.

6. A prefolded, rectangular multiple layer woven gauze diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said U-shaped edges being at least about one and one half (1 /2) times the warp end count in the individual top and bottom layers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the warp end count in the individual top and bottom layers of the central panel being at least about i one and one half (1 /2) times greater than the warp end count of the individual top and bottom layers of said side panels, the filling end count in the individual top and bottom layers of said side panels being substantially greater than the filling end count of the individual remaining layers in said side panels, and the warp and filling end counts and yarn sizes in the individual top and bottom layers of said side panels being in the range of conventional gauze diaper cloth.

7. A prefolded, rectangular multiple layer Woven gauze diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U havin' one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said lJ-shaped edges being at least about one and one half (l /z) times the warp end count in the individual top and bottom layers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the top section of the central panel being woven integral with the top halves of said side panels, the middle secll; tion of the central panel being woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of the other of said side panels, the warp end count in individual top and bottom layers of the central panel being at least about one and one half (l /2) times greater than the warp end count of the individual top and bottom layers of said side panels, the filling end count in the individual top and bottom layers of said side panels being substantially greater than the filling end count of the individual remaining layers in said side panels, and the warp and filling end counts and yarn sizes the individual top and bottom layers of said side panels being in the range of conventional gauze diaper cloth.

8. A prefolded, rectangular multiple layer woven gauze diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said U-shaped edges being at least about one and one half (1 /2) times the warp end count in the individual top and bottom layers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its Warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the top section of the central panel being woven integral with the top halves of said side panels, the middle section of the central panel being woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of the other of said side panels, one of the selvages of the diaper fabric being in the middle section of the central panel and extending along one of the longitudinal edges of the central panel, the other selvage being in the bottom section of the central panel and extending along the other of the longitudinal edges of the central panel, the only permanent folds in the diaper being along its opposite longitudinal edges, the warp end count in the individual top and bottom layers of the central panel being at least about one and one half 1 /2) times greater than the warp end count of the individual top and bottom layers of said side panels, the filling end count in the individual top and bottom layers of said side panels being substantially greater than the filling end count of the individual remaining layers in said side panels, and the warp and filling end counts and yarn size in the individual top and bottom layers of said side panels being in the range of conventional gauze diaper cloth.

9. A prefolded, rectangular multiple layer woven gauze diaper weighing between about and grams and being between about 13.5 inches wide and 20.5 inches long and 15.5 inches wide and 22.5 inches long and which comprises a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said U-shaped edges being at least about one and one half (1 /2) times the Warp end count in the individual top and bottom layers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 13 layers of diaper fabric, said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the top section of the central panel being woven integral with the top halves of said side panels, the middle section of the central panel being Woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of the other of said side panels, one of the selvages of the diaper fabric being in the middle section of the central panel and extending along one of the longitudinal edges of the central panel, the other selvage being in the bottom section of the central panel and extending along the other of the longitudinal edges of the central panel, the only permanent folds in the diaper being along its opposite longitudinal edges, the warp end count in the individual top and bottom layers of the central panel being at least about one and one half (1 /2) times greater than the warp end count of the individual top and bottom layers of said side panels, the filling end count in the individual top and bottom layers of said side panels being substantially greater than the filling end count of the individual remaining layers in said side panels, and the end count being between about 32 and 48 in the warp and 32 and 52 in the filling, and the yarns being between about s and 30s in the warp and s and 45s in the filling in size in the individual top and bottom layers of said side panels.

10. A prefolded, rectangular multiple layer woven gauze diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the Warp end count in the outer fabric layer of each of said U-shaped edges being at least about one and one half (1 /2) times the warp end count in the individual top and bottomlayers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the top section of the central panel being woven integral with the top halves of said side panels, the middle section of the central panel being woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of the other said side panels, the Warp end count in the individual top and bottom layers of the central panel being at least about one and one half (1 /2) times greater than the warp end count of the individual top and bottom layers of said side panels, and the warp and filling end counts and yarn sizes in the individual top and bottom layers of said side panels being in the range of conventional gauze diaper cloth.

11. A prefolded, rectangular multiple layer woven gauze diaper comprising a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said U-shaped edges being at least about one and one half (1 /2) times the Warp end count in the individual top and bottom layers of said side panels, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at ltd least 2 layers of diaper fabric, said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the top section or" the central panel being woven integral with the top halves of said side panels, the middle section of the central panel being woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of the other of said side panels, one of the selvages of the diaper fabric being in the middle section of the central panel and extending along one of the longitudinal edges of the central panel, the other selvage being in the bottom section of the central panel and extending along the other of the longitudinal edges of the central panel, the only permanent folds in the diaper being along its opposite longitudinal edges, the warp end count in the individual top and bottom layers of the central panel being at least about one and one half (l /2) times greater than the warp end count of the individual top and bottom layers of said side panels, and the warp and filling end counts and yarn size in the individual top and bottom layers of said side panels being in the range of conventional gauze diaper cloth.

12. A prefolded, rectangular multiple layer woven diaper weighing between about 45 and grams and being between about 13.5 inches Wide and 20.5 inches long and 15.5 inches wide and 22.5 inches long, before washing, and which comprises a longitudinally extending central panel and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper, each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric, each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric, said diaper being Woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof, the warp end count in the individual top and bottom layers of the central panel being substantialiy greater than the warp end count in the individual top and bottom layers of said side panels and at least the immediately adjacent interior layers of said central panel, and the end count being between about 32 and 48 in the warp and 32 and 52 in the filling, and the yarns being between about 20s and 30s in the warp and 25s and 45s in the filling in size in the individual top and bottom layers of said side panels.

13. A prefolded, rectangular multiple layer woven gauze diaper comprising a longitudinally extending central panel; and a side panel on each side of the central panel between the central panel and each longitudinal edge of the diaper; each of said side panels comprising a top and bottom half and each of said halves comprising at least 2 layers of diaper fabric; each of said longitudinal edges being folded in the shape of a U having one of its legs connected to the top half of the adjacent side panel and the other of its legs connected to the bottom half of the adjacent panel, the warp end count in the outer fabric layer of each of said U-shaped edges being substantially greater than the warp end count in the individual top and bottom layers of said side panels; said central panel comprising superimposed top, middle, and bottom sections and each of said sections comprising at least 2 layers of diaper fabric; said diaper being woven as a unit with its warp yarns extending longitudinally of the diaper and its filling yarns extending transversely thereof; the top section of the central panel being woven integral with the top halves of said side panels, the middle section of the central panel being woven integral with the bottom half of one of said side panels, and the bottom section of said central panel being woven integral with the bottom half of aoraaaa the other of said side panels; one of the selvages of the diaper fabric being in the middle section of the central panel and extending along one of the longitudinal edges of the central panel, the other selvage being in the bottom section of the central panel and extending along the other of the longitudinal edges of the central panel; the only permanent folds in the diaper being along its opposite longitudinal edges; the Warp end count in the individual top and bottom layers of the central panel being substantially greater than the warp end count of the individual top and bottom layers of said side panels; and the warp end count in the individual top and bottom layers of said side panels being between about 32 and 48 and the 1t) filling end count and the Warp and filling yarn size, in the individual top and bottom layers of said side panels, being in the range of conventional gauze diaper cloth.

References Cited in the file of this patent UNITED STATES PATENTS 776,087 Robitschek Nov. 29, 1904 1,815,059 Goldstein July 21, 1931 2,161,539 Swartz June 6, 1939 2,600,634 Gannon June 17, 1952 2,845,069 Jamison et al. July 29, 1958

Claims

1. A PREFOLDED, RECTANGULAR MULTIPLE LAYER WOVEN DIAPER WEIGHTING BETWEEN ABOUT 45 AND 65 GRAMS AND BEING BETWEEN ABOUT 13.5 INCHES WIDE AND 20.5 INCHES LONG AND 15.5 INCHES WIDE AND 22.5 INCHES LONG, BEFORE WASHING, AND WHICH COMPRISES A LONGITUDINALLY EXTENDING CENTRAL PANEL AND A SIDE PANEL ON EACH SIDE OF THE CENTRAL PANEL BETWEEN THE CENTRAL PANEL AND EACH LONGITUDINAL EDGE OF THE DIAPER, EACH OF SAID SIDE PANELS COMPRISING A TOP AND BOTTOM HALF AND EACH OF SAID HALVES COMPRISING AT LEAST 2 LAYERS OF DIAPER FABRIC, EACH OF SAID LONGITUDINAL EDGES BEING FOLDED IN THE SHAPE OF A U HAVING ONE OF ITS LEGS CONNECTED TO THE TOP HALF OF THE ADJACENT SIDE PANEL AND THE OTHER OF ITS LEGS CONNECTED TO THE BOTTOM HALF OF THE ADJACENT PANEL, SAID CENTRAL PANEL COMPRISING SUPERIMPOSED TOP, MIDDLE AND BOTTOM SECTIONS AND EACH OF SAID SECTION COMPRISING AT LEAST 2 LAYERS OF DIAPER FABRIC, SAID DIAPER BEING WOVEN AS A UNIT WITH ITS WARP YARNS EXTENDING LONGITUDINALLY OF THE DIAPER AND ITS FILLING YARNS EXTENDING TRANSVERSELY THEREOF, THE WARP END COUNT IN THE INDIVIDUAL TOP AND BOTTOM LAYERS OF THE CENTRAL PANEL BEING SUBSTANTIALLY GREATER THAN THE WARP END COUNT IN THE INDIVIDUAL TOP AND BOTTOM LAYERS OF SAID SIDE PANELS AND AT LEAST THE IMMEDIATELY ADJACENT INTERIOR LAYERS OF SAID CENTRAL PANEL, THE FILLING END COUNT IN THE INDIVIDUAL TOP AND BOTTOM LAYERS OF SAID SIDE PANELS BEING SUBSTANTIALLY GREATER THAN THE FILLING END COUNT OF THE INDIVIDUAL REMAINING LAYERS IN SAID SIDE PANELS, AND THE END COUNT BEING BETWEEN ABOUT 32 AND 48 IN THE WARP AND 32 AND 52 IN THE FILLING, AND THE YARNS BEING BETWEEN ABOUT 20S AND 30S IN THE WARP AND 25S AND 45S IN THE FILLING IN SIZE IN THE INDIVIDUAL TOP AND BOTTOM LAYERS OF SAID SIDE PANELS.