US RE23040 E
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P 1, 1948. LE ROY H. RAND Re. 23,040
BABY PANTS Original- Filed Feb 28, 1945 l'i oissuocl Sept. 21, 1948' Band Rubber Company, B
poration of New York Original No.- 2,397,751, dated April 2, 1Ml, 8erlai No. 580.281, February 28. 1945. Application in reissue August 1, 1946, Serial No. 887,861
This invention relates to garments such as baby pants and the like and more particularly to garments of compounded synthetic film materials I Claims. (01. 128-288) having the characteristics of being waterprooi,
while being pervious to the passage oi moisture vapor therethrough and to water repellent baby pants having elastic stitched on the margins at the openings such as at the lower margin or each pant andat the waist. I
Prior to the instant invention, baby pants have been made oi rubber and 01' coated iabric. Prior attempts to make baby pants synthetics utilizing neither rubber nor fabric have resulted in pants to which elastic can not be stitched at the margins with the use oi conventional sewing machinery so that such baby pants made oi synthetic sheet material may not be readily elasticized at the margins such as at the bottom oi each pant and at the waist; Baby pants in accordance with the invention utilize neither rubber nor fabric and are repellent to liquids including water and urine, and can be stitched with ordinary sewing machinery so that elastic bands may be stitched to.
the margins at the bottom oi'each pant and the waist.
It is an object oi the instant invention to provide a baby pant made oi synthetic material in- --cluding neither rubber nor iabric which will have elasticized openings for cooperation with the legs and waist of the baby so as to aiiord the proper protection.
N. Y, a ser- 2 scribed below and comprises a stitched. elasticized and gathered waist portion ii. a stitched. elasticized and gatheredleg opening I! and a stitcheiL. elasticized and gathered leg opening is. The sides oi the baby pants are also stitched at ll and il. Within the marginal openings at H, and II is located the elastic band II which is immediately adjacent the marginal end oi material l1 which forms the body of the pants and theelastic band it and margin oi the sheet material ii are boimd by the folded ing material II and the stitching It.
The sheet material for the baby pants in ac cordance with the invention is manufactured or compounded on calendaring equipment. The
resinmaybeoithevinyliamilysuchasthecopolymers oi vinyl chloride and vinyl. acetate. The
izer. such as calcium stearate, is included, which heat stabilizer in addition to other properties. iacilitates the proper p of the material without aiiecting its color. A lubricant, such as as stearic acid is added and also assists in the proc- It is another obiect oi the invention to provide a garment including a body p rtion made oi a compounded synthetic illm material having the Partsbyweight Resin 100 Plasticlzer 70 Calcium stearate 1% Btearic Mid i Pigment 25 Organic blue; V.
Fig. 2 is a iragmentary view in elevation oi a 7 portion oi the baby pants showing a stitched elasticized margin which has been stretched:
Fig. 3 isa view similar to Figure 2 with a part shown in section.
Reierringtothedrawing,thebabypants II are made oi sheet material manuiactured as deessing. The pigment which has among other 'iunctions, the iunction oi iilling, coloring and im- D rting oodaginscharaeteristicsis addedinths calenderlng process. 'Iitanium oxide and a small quantity 01' organic blue may be used as the pigment. It is also necessary to use a solvent which may be selected from one or more oi the iollowing group: acetone derivatives, methylethyl ketone, or esters. Similar solvents may also be used.
A sheeting tor the baby pants oi approximately the iollowing proportions. has been iound to give excellent results:
Aiter the materials have been compounded. sheeted'and calendered. the resulting film has a shiny or patent leather eiiect on its suriace which prevents soil from adhering to it. Former sheetings or him products used for baby pants had.
quite a diiierent surface so that ii a child wearing such prior baby pants sat on the iloor, the baby pants picked up dirt which was not easy to wash oil. The film in accordance with the invention can be readily cleaned by simply spon in it 01!. Theiilminaccordancewiththeinventionis 3 capable of being boiled, washed and ironed. It also remains fiexible and does not tear very readily.
The resulting film-like sheet is then cut into a shape corresponding to the-front and back of the baby pants which front and back are integral with each other and connected to each other by the material at the crotch. Side seams are formed so as to connect the front with the back to complete'the baby pants construction with the exception of stitching the margin of the waist and the margin of the openings tor the legs with elastic material. An elasticized binding is then stitched over the margins of the two leg openings and the waist to complete the baby pants.
The stitching is effected with conventional sewing machinery and the film which is quite thin, being only a few thousandths oi an inch in thickness, satisfactorily holds the stitches which do not pull out even though the garment be used quite roughly. The stitched garment may be washed, boiled and ironed without affecting the strength of the stitches materially so that after repeated washings, boilings and ironings, the garment is still serviceable.
In order to make the baby pants more comfortable to the wearer without affecting the other advantages inherent in the material referred to above, silica gel or silica aerogel in the amount of approximately of the total weight of the compound may be added as by the addition of silica gel or silica aerogel the resulting film permits the passage of moisture vapor without detracting from the water proofing quality thereof.
In a sense, it permits the film to breathe." The addition of silica gel or silica aerogel to the film compound in the proportion specified does not affect the strength of the stitched joint at the margins of the leg openings and waist of the baby pants.
The film material preferably utilized in the garment described and having the characteristic of being waterproof while being pervious to the passage of moisture vapor therethrough includes vinyl resin, plasticizer and silica gel or silica aerogel.
Wherever the term a silica gel" appears in the claims, it is intended that both silica gel and silica aerogel be included.
It will be obvious to those skilled in the art that various changes may be made without departing from the spirit of the invention and therefore the invention is not limited to what is described in the specification but only as indicated in the appended claims.
What is claimed is:
1. Baby pants comprising a body portion of synthetic film material, a body opening, an elastic band stitched to said body opening with thread, said film being compounded of vinyl resin, pla'sticizer, calcium stearate, stearic acid, pigment, a silica gel, said film and said stitching cooperating to provide a relatively strong joint capable of withstanding repeated washings and ironings.
2. Baby pants comprising a body portion of synthetic film material, a body opening, an elas- .tic band stitched to said body opening with thread, said film being compounded of vinyl resin, plasticiaer, calcium stearate. stearic acid, pigment, silica aerogel, said film and said stitching cooperating to provide a relatively strong Joint capable of withstanding repeated washings and ironings.
3. Baby pants including a body portion made of synthetic film generally in accordance with the following formula:
Partsby weight Vinyl resin 100 Plasticizer Calcium stearate 1% Stearic acid 1 Pigment Approximately 25 and approximately 10% by weight of the above of a silica gel.
4. Baby pants including a body portion made of synthetic film generally in accordance with the following formula:
Parts by weight VYNS vinyl resin Dioctyl phthalate 70 Calcium stearate 1% Stearic acid 1 Titanium oxide 25 Organic blue V and approximately 10% by weight of the above of silica aerogel.
5. In a baby pants, a Joint made by stitching an elastic band to a synthetic film, said synthetic film being compounded of vinyl resin, plastlcizer, calcium stearate, stearic acid, pigment and a silica gel, said joint comprising thread passing through overlying piercings in the elastic band and the film.
6. Baby pants including a body portion made of a compounded synthetic film material-including vinyl resin, plasticizer, and a silica gel.
7. A garment including a body portion made of a compounded synthetic film materialincluding vinyl resin, plasticizer and'a silica aerogel.
REFERENCES CITED The following referencesare of record in the file of this patent:
UNITED STATES PATENTS