US3285246A - Woven diaper - Google Patents
Woven diaper Download PDFInfo
- Publication number
- US3285246A US3285246A US445019A US44501965A US3285246A US 3285246 A US3285246 A US 3285246A US 445019 A US445019 A US 445019A US 44501965 A US44501965 A US 44501965A US 3285246 A US3285246 A US 3285246A
- Authority
- US
- United States
- Prior art keywords
- diaper
- prefolded
- yarns
- unfolded
- warp yarns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
- D10B2509/02—Bandages, dressings or absorbent pads
- D10B2509/026—Absorbent pads; Tampons; Laundry; Towels
Definitions
- This invention relates to a woven diaper and more particularly to a single ply woven diaper which has the absorbency and wear characteristics of a multi-ply woven diaper and which may be folded and sewn to form a prefolded woven diaper.
- woven diapers have usually been in the form of a multi-ply, relatively light and open gauze material or single ply materials utilizing a birdseye weave or flannel construction.
- the gauze diapers are often folded and sewn by the diaper manufacturers to provide a prefolded diaper which is ready for use by diaper services and consumers.
- the multi-ply gauze diapers are somewhat more expensive to construct initially than the single ply birdseye or flannel diapers, they may be folded and sewn to form a prefolded diaper which has superior absorbency characteristics.
- the object of this invention to provide a single ply woven diaper, adapted to be folded and sewn vto form a prefolded diaper, which has at least the same absorbency and wear characteristics of a multi-ply diaper and which may be constructed at a lower cost than a multiply diaper.
- this object may be accomplished by providing a woven diaper which has warp yarns and filling yarns therein and in which the filling yarns are much heavier and bulkier than the warp yarns to thereby reduce the picks per inch required to weave the diaper resulting in a reduction in the cost of the diaper.
- filling yarns which are much heavier and bulkier than warp yarns it is preferable to use filling yarns which also have a lower twist multiple than the warp yarns to thereby increase the bulk of the filling yarn which further reduces the picks per inch required to weave the diaper material.
- the thus formed diaper may be folded and sewn in a special manner, such as disclosed in our copending application Serial No. 334,694, filed December 31, 1963, to obtain a prefolded diaper in which the selvage edges of the unfolded diaper form the longitudinal edges of the prefolded diaper to resist wear therealong and in which a prefolded diaper of conventional size may be formed, having a wider than normal center panel, from a considerably smaller unfolded diaper than has heretofore been required.
- FIGURE 1 is a perspective view of an unfolded diaper constructed according to this invention and cut from a continuous web of material;
- FIGURE 2 is a cross-sectional view of the unfolded diaper of FIGURE 1 taken substantially along the line 2-2 of FIGURE 1;
- FIGURE 3 is a perspective view of a prefolded and sewn diaper formed from the unfolded diaper of FIG- URE 1;
- FIGURE 4 is a cross-sectional view of the prefolded and sewn diaper of FIGURE 3 taken substantially along the line 4-4 of FIGURE 3;
- FIGURE 5 is a microscopic view of the diaper material forming the unfolded diaper of FIGURE 1 and the prefolded diaper of FIGURE 3 illustrating the heavy filling yarns and the napped surface and taken substantially within the circle 5 of FIGURE 3.
- an unfolded diaper 10 which has been cut from a continuous web of diaper material along cut edges 11.
- This unfolded diaper 10 comprises a single ply of material woven in a plain weave pattern with filling yarns 12 and warp yarns 13.
- the diaper 10 also includes selvages 14 which are conventionally constructed heavier and denser than the remaining portions thereof to prevent raveling.
- the yarns utilized as the filling yarns 12 are much heavier and bulkier than the warp yarns 13 and have a lower twist multiple than these warp yarns.
- the use of these heavier and bulkier filling yarns will reduce the picks per inch of the filling yarns and the ends per inch of the warp yarns required for the unfolded diaper 10 and thereby reduce the cost of weaving the diaper 10.
- an unfolded diaper according to this invention may be constructed with 26 picks per inch for the filling yarns and 40 ends per inch for the warp yarns.
- the use of the heavier and bulkier filling yarns with a lower twist multiple will result in a reduction in the required number of picks per inch for the filling yarns from 58 for the gauze diaper and 46 for the birdseye diaper to 26 for the diaper of this invention. Also, the required ends per inch for the warp yarns are reduced from 80 for the gauze diaper and 60 for the birdseye to 40 for the diaper of this invention. This will result in a substantial saving in the cost of construction of the diaper of this invention of approximately 13 percent as compared to the gauze diaper and approximately 25 percent as compared to the birdseye diaper.
- the unfolded diaper 10, constructed as described above, may be napped or brushed slightly on each side thereof to provide additional absorbency and bulk.
- the unfolded diaper 10 may be folded and sewn to form the prefolded and sewn diaper 20, shown in FIG- URES 3 and 4. It is axiomatic that the strongest portion of the unfolded diaper 10 will be the selvage edges 14 and, therefore, the diaper 10 is folded in the novel manner with a multiple reverse fold, as set forth in our above identified copending application, so that the selvage edges 14 will form the longitudinal edges of the prefolded and sewn diaper 20 to resist wear therealong. This novel fold will also allow the formation of a prefolded diaper 20 of conventionl size, having a wider than normal center panel, from considerably smaller or narrower diaper 10 than has heretofore been required.
- This prefolded and sewn diaper 20 is formed from the folded diaper 10 by first folding the unfolded diaper 10 back upon itself in a reverse fold along a first fold line 21 which is spaced from and parallel to the left selvage edge 14, as viewed in FIGURES 3 and 4.
- the diaper material extending from the left selvage edge 14 to the first fold line 21 defines a first single ply layer and the material folded back upon itself from the first fold line 21 defines a second single ply layer extending therefrom toward the left selvage edge 14.
- This second layer is then folded back upon itself to form a second reverse fold along a second fold line 22 parallel to the first fold line 21 and extending inwardly from the left selvage edge 14 between the selvage 14 and the first fold line 21.
- the last mentioned folded-over material forms a third single ply layer extending to the right from the second fold line 22 past the first fold line 21 to the right selvage edge 14, as viewed in FIGURES 3 and 4.
- the three folded-over single ply layers form a center panel 25 located between fold lines 21 and 22.
- the portion of the first single ply layer extending from the left selvage edge 14 to the second fold line 22 forms a first side panel 26 and the portion of the third single ply layer extending from the right selvage 14 to the first fold line 21 forms a second side panel 27.
- These panels 25, 26 and 27 and the prefolded diaper 20 now have a longer dimension corresponding to the shorter dimension of the unfolded diaper 10 and the side panels 26 and 27 extend transversely outwardly from the center panel 25.
- This prefolded diaper 20 is permanently secured together by lines of stitching 28 parallel with and closely adjacent to the first and second fold lines 21 and 22.
- the cut edges 11 may be provided with overedge stitching 29 to prevent any raveling at these out edges.
- an unfolded diaper 10 of approximately 28 inches from selvage to selvage may be used to form a prefolded diaper 20 of approximately 14 inches from selvage to selvage and having a widened center panel 25 of approximately 6 /2 inches in width.
- a prefolded diaper 20 of approximately 14 inches from selvage to selvage and having a widened center panel 25 of approximately 6 /2 inches in width.
- this prefolded and sewn diaper 20 may have to be additionally folded or not to form a front portion, rear portion, crotch portion and leg apertures when placed in position on the wearer in the normal manner of diapering infants.
- a diaper either unfolded or prefolded and sewn, may be provided which utilizes a single ply of material, which can be constructed cheaper than conventional multi-ply diapers or conventional single ply diapers, and which will have the same or superior absorbency and wear characteristics as these conventional diapers.
- a prefolded diaper formed from an unfolded diaper having selvage edges and cut edges, said unfolded diaper comprising a single ply having Warp yarns and filling yarns therein, said warp yarns having a cotton count of approximately 400800% of the cotton count of said filling yarns and said filling yarns having a twist multiple of approxiamtely 75% of the twist multiple of said warp yarns whereby said filling yarns are heavier and bulkier than said warp yarns to reduce the required number of picks per inch for said filling yarns and the required number of ends per inch for said warp yarns in said diaper to reduce the cost thereof, said unfolded diaper having napped surfaces on each side thereof to increase the absorbency and bulk of said prefolded diaper, said prefolded diaper being folded to form an absorbent center panel comprising a plurality of layers of said unfolded diaper and side panels comprising a single layer of said unfolded diaper and extending transversely outwardly from said center panel and having outer longitudinal edges, said prefold
- a woven diaper constructed to use less picks per inch and ends per inch when compared to conventional diapers for reducing-the cost thereof and adapted to be folded to form a front portion, rear portion, crotch portion and leg apertures when placed in position on the wearer, said diaper comprising a single plain weave ply having warp yarns and filling yarns therein, all of said warp yarns having a cotton count of approximately 400- 800% of the cotton count of all of said filling yarns and said filling yarns having a twist multiple of approximately 75% of the twist multiple of said warp yarns whereby said filling yarns are heavier and bulkier than said warp yarns to reduce the required picks per inch for said filling yarns and the required ends per inch for said warp yarns when compared with conventional diapers yet retaining the absorbency and wear characteristics of conventional diapers.
- a woven diaper as set forth in claim 2, which has napped surfaces on each side thereof to increase the absorbency and bulk of said diaper.
- a prefolded diaper formed from an unfolded diaper having selvage edges and cut edges, said unfolded diaper comprising a single ply having warp yarns and filling yarns therein, said warp yarns having a cotton count of approximately 400800% of the cotton count of said filling yarns and said filling yarns having a twist multiple of approximately 75% of the twist multiple of said warp yarns whereby said filling yarns are heavier and bulkier than said warp yarns to reduce the required number of picks per inch for said filling yarns and the required ends per inch for said Warp yarns in said diaper to reduce the cost thereof, said prefolded diaper being folded to form an absorbent center panel comprising a plurality of layers of said unfolded diaper and side panels comprising a single layer of said unfolded diaper and extending transversely outwardly from said center panel and having outer longitudinal edges, said prefolded diaper being permanently secured together in the prefolded condition, and said prefolded diaper being folded with a multiple reverse fold so that said outer longitudinal
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Woven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US445019A US3285246A (en) | 1965-04-02 | 1965-04-02 | Woven diaper |
| GB25987/65A GB1081492A (en) | 1965-04-02 | 1965-06-18 | Woven diaper |
| FR22197A FR1439487A (fr) | 1965-04-02 | 1965-06-24 | Perfectionnements au tissage de couches pour bébés |
| DE19651435904 DE1435904A1 (de) | 1965-04-02 | 1965-07-13 | Gewebte Windel |
| NL6509939A NL6509939A (hu) | 1965-04-02 | 1965-07-30 | |
| BE670584A BE670584A (hu) | 1965-04-02 | 1965-10-06 | |
| LU49620A LU49620A1 (hu) | 1965-04-02 | 1965-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US445019A US3285246A (en) | 1965-04-02 | 1965-04-02 | Woven diaper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3285246A true US3285246A (en) | 1966-11-15 |
Family
ID=23767316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US445019A Expired - Lifetime US3285246A (en) | 1965-04-02 | 1965-04-02 | Woven diaper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3285246A (hu) |
| BE (1) | BE670584A (hu) |
| DE (1) | DE1435904A1 (hu) |
| GB (1) | GB1081492A (hu) |
| LU (1) | LU49620A1 (hu) |
| NL (1) | NL6509939A (hu) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2731045A (en) * | 1953-03-17 | 1956-01-17 | Beacon Mfg Co | Blanket and napped material therefor |
| US2977997A (en) * | 1958-10-07 | 1961-04-04 | Kendall & Co | Diaper |
| US3030956A (en) * | 1959-08-10 | 1962-04-24 | Frederick S Nichols | Method of making a diaper |
| GB909949A (en) * | 1960-06-07 | 1962-11-07 | Frederick Walter Rudolph Leist | Diaper |
-
1965
- 1965-04-02 US US445019A patent/US3285246A/en not_active Expired - Lifetime
- 1965-06-18 GB GB25987/65A patent/GB1081492A/en not_active Expired
- 1965-07-13 DE DE19651435904 patent/DE1435904A1/de active Pending
- 1965-07-30 NL NL6509939A patent/NL6509939A/xx unknown
- 1965-10-06 BE BE670584A patent/BE670584A/xx unknown
- 1965-10-11 LU LU49620A patent/LU49620A1/xx unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2731045A (en) * | 1953-03-17 | 1956-01-17 | Beacon Mfg Co | Blanket and napped material therefor |
| US2977997A (en) * | 1958-10-07 | 1961-04-04 | Kendall & Co | Diaper |
| US3030956A (en) * | 1959-08-10 | 1962-04-24 | Frederick S Nichols | Method of making a diaper |
| GB909949A (en) * | 1960-06-07 | 1962-11-07 | Frederick Walter Rudolph Leist | Diaper |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1435904A1 (de) | 1969-03-20 |
| LU49620A1 (hu) | 1966-04-12 |
| NL6509939A (hu) | 1966-10-03 |
| GB1081492A (en) | 1967-08-31 |
| BE670584A (hu) | 1966-04-06 |
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