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Publication numberUS3030633 A
Publication typeGrant
Publication dateApr 24, 1962
Filing dateSep 22, 1959
Priority dateSep 22, 1959
Publication numberUS 3030633 A, US 3030633A, US-A-3030633, US3030633 A, US3030633A
InventorsChalfin William L
Original AssigneeWilmington Chemical & Rubber C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Plastic strips
US 3030633 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

W L. CHALFIN PLASTIC STRIPS April 24, 1962 Filed Sept. 22, 1959 FIG.3

FIG.1

o 9 2 N 3 a 2 m S c. L n W fl 8 I W. 8 M M 6 a W 6 m y I l 0 W W K n 5 M u 3 .0 W U 7 6)) v 2 U i /v Q V 2 I A w u mm 4 V F U F m in l 1111 I 4 FIG.9

FIG.12

INVENTOR. WILLIAM LCHALFIN ATTORNEY 3,030,633 PLASTIC STRIPS William L. Chalfin, Brooklyn, N.Y., assignor to Wilmington Chemical & Rubber Corporation, Brooklyn, N.Y., a corporation Filed Sept. 22, 1959, Ser. No. 341,544 Claims. (Cl. 2258) This invention relates to plastic strips, and more particularly, concerns strips particularly adapted for use as boning means.

An object of this invention is to provide improved strips formed from synthetic plastic materials, such strips varying along the length thereof as to resiliency, stiffness and penetrability by sewing needles or the like.

Another object of this invention is to provide improved boning strips formed of synthetic plastic materials, which may be produced economically and which have relatively soft end portions and relatively stifi intermediate portions.

Still another object of this invention is to provide im proved plastic strips which have substantial flexibility in directions within the plane of the strip as well as in directions at right angles to the plane of the strip.

Yet a further object of this invention is to provide improved, plastic boning strips which have structural features adapted to facilitate the use thereof in assembly with apparel through the use of sewing machines.

Still a further object of this invention is to provide improved stay or boning strips which may be sewn into place on a garment, the strips being disposed in suitable pockets or being directly sewn without a pocket.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

In the drawing,

FIG. 1 is a top plan view of a boning strip embodying the invention;

FIG. 2 is a top plan view of an extruding and blanking operation for forming the boning strip of FIG. 1;

FIGS. 3, 4 and 5 are transverse sectional views of modified forms of boning strips embodying the invention;

FIG. 6 is a top plan view of one end of a boning strip illustrating still another modification;

FIG. 7 is a transverse sectional view of still another modified form of boning strip;

FIG. 8 is a top plan view of one end of yet another form of boning strip;

FIG. 9 is a longitudinal sectional view thereof;

FIG. 10 is a top plan view of an end portion of still another form of boning strip;

FIG. 11 is a view similar to that of FIG. 10, showing a variation thereof;

FIG. 12 is a transverse sectional view of yet another form of boning strip; and

FIG. 13 is a top plan view of one end of a boning strip embodying the invention.

Referring to the drawing, and particularly to FIGS. 1 and 2, a plastic strip embodying the invention, is shown at 10. Such strip, which is particularly suitable as a boning element for garments, comprises opposite end portions 11 which are somewhat softer and more yielding than the intermediate portion 12, which may be quite stifi.

Strips 10 may be made in various ways, one method being illustrated in FIG. 2, wherein a sheet 13 of plastic is produced by extrusion. Sheet 13 comprises opposite end zones 14 and an intermediate zone 15. The extruding device which produces sheet 13 is arranged to receive separate batches of plastic for producing zones 14, 15. The batch of plastic to produce zones 14 is formulated to provide in the extruded sheeting 13 a relatively soft and yielding effect, whereas the formulation of the plastic batch forming intermediate zone 15 is productive in the extruded sheeting 13 of a central portion which is stiffer than end zones 14.

The extruded sheeting 13 may be blanked by a suitable die, not shown, operating transversely of the sheeting 13, to produce the individual strips 10. It is understood that the formulation of the plastic batches may be based on varying the proportion of plasticizer or softening agents in a master batch of a given plastic. Alternatively, one plastic may be used for forming central zone 15 and another plastic for forming zones 14. I

If desired, strips 10 may be slightly curved as indicated at 16 in FIG. 13; may have a tapered cross section 17, as shown in FIG. 4; or may have a rectangular cross section 18 with rounded edges 19, as shown in FIG. 5.

As the stay strips are frequently sewn into position relative to the garment with which they are associated, the ends of strips 10 may be corrugated or indented, as at 20 in end portions 11, as shown in FIG. 6. Such corrugations or indentations prevent needle slippage and breakage during the sewing operation. Furthermore, if the stay strip 10 is formed from polypropylene, it has been found that the temperature of the plastic is raised during the sewing operation to a value suflicient to plasticize the stay material and seal the same to the sewing thread.

As shown in FIG. 7, the stay strips 30 may comprise a fairly stiff body portion 31 with thinned lateral edge portions 32 on either side thereof, the portions 32 being quite flexible and readily penetratable by needles. In FIGS. 8, 9, is shown a stay strip 35 which has tapered end portions 36 formed with an opening 37. As a result end portions 36 of strip 35 have a stiffness less than the body portion thereof and the opening 37 will facilitate sewing operations.

In FIG. 10 is shown a modified form of stay strip 40 wherein, the lateral portions 41 thereof are notched, as at 42; the notches on opposite sides of the strip being in offset relation. Such a strip displays flexibility in directions parallel to the plane of the strip, as well as at right angles thereto. Upon forming strip 40 of polypropylene and raising the temperature of the notched strip, a zig-zag structure 43 is produced, as shown in FIG. 11. The strip 43 is even more articulate in its ability to conform to various curvatures which a garment such as a brassiere, may have to assume, in use.

As shown in FIG. 12, the stay strip may include a body portion 51, which may have a thickness of the order of about .055", with integral wing portions 52 joined at their inner ends to a mid portion 53 of body portion 51. The wing portions 52 may have a thickness of the order of about .010" and the same project beyond the lateral edges of body portion 51.

The stay strip shown in FIG. 12. may be sewn in place with the stitching passing through the outer end portions of wings 52, leaving body portion 51 in a floating relation to the garment surface with which the stay is associated. Such arrangement increases the scope of design in boning various items of wearing apparel.

As indicated in FIG. 13, stay strip 60 comprises an elongated body portion 61 which may be quite stiff and formed from a suitable resin such as nylon or the like. Body portion 61 has secured to the opposite ends thereof tips 62 of a relatively softer resin, such as polypropylene, which will readily pass a needle during a sewing operation. Body portions 61 may be preformed by extrusion or the like, with a notch 63 at the opposite ends thereof. Body portions 61 may then be passed through another extruder to apply tips 62 to the ends thereof, notches 63 providing means for receiving a projecting portion of tip 62 for adhering and mechanically interlocking the dissimilar resins.

of various plastics including-polyvinyl chloride, cellulose acetate, polystyrene, nylon and the like. However, polypropylene is particularly efiective for strips which are to bes ubjecte'dto se'v ving'ope'rations, particularly' since the fs'eiving' needle appears to belubricafed as it passesthrough "the plastic, thereby niifiiliiiiing needle "breakage.

b As various changes might be made in the several cinbodirnen ts of the invention herein deseribed, without deparing from th'e'spir'it thereof, it-is understood that all {inatterhereinshbvvn or described, is illustrative and not by Lvvayofliiiiitation' eiicept as set forth in the appended claims.

What is claimed is:

'L'A unitary elongated plastic boiling strip having an elongated intermediateportion formed of a composition providing stifiness and resistance to penetration by needles, and at least one tip portion forrned of a composition of reduced stiffnessand penetrable by needles.

2. A plastic boning stripes in claim 1 wherein at least one tip portion is of a thickness substantially-less than 'the thickness of said intermediate portion.

3. A strip as in claim 1 vvhei'ein at least one tip portion "thereof is formed with'spaced indentations 'on the face thereof. I

A plastic strip as in claim 1 wherein the lateral edge bort-itiir is'are formed with indentations extending toward the medial line of said strip, said indentations being in staggered'relation-onthe opposite edges of said strip.

5. A unitary plastic boning strip having an elongated body portion formed of a composition providing stilfness and resistance to needle penetration, and elongated fiat portions formed of a composition penetrable by needles, said flat portions being integrally connected along their inner longitudinal edges with a surface portion of said body portion, the outer longitudinal edges of said flat portions projecting beyond the lateral edges of said body portion.

References Cited in the file of this patent UNITED STATES PATENTS 389,993 Warren Sept. 25, 1888 478,961 Grott a July 12, 1892 517,132 Wolff Man-27, 1894 595,510 Adams Dec. 14,1897 1,113,758 Dean Oct. 13, 1914 1,759,528 Tracy May 20, 1930 1,854,530 Taylor Apr. 19, 1932 2,756,435 Rose July 31, 1956 FOREIGN PATENTS 6,823 Great Britain -4- 'Apr. 11, 1900 1,052,300 France Sept. 23, 1953 791,168 Great Britain Feb. 26, 1958

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US389993 *Sep 25, 1888 Garment-stay
US478961 *Jan 11, 1892Jul 12, 1892 Garment-stay
US517132 *Jun 8, 1892Mar 27, 1894 Joseph wolff
US595510 *Feb 13, 1897Dec 14, 1897 Corset-stiffener
US1113758 *Jun 30, 1913Oct 13, 1914Walter Karl DeanGarment-stay.
US1759528 *Feb 28, 1928May 20, 1930Tracy Daniel EStay member for coat necks
US1854530 *Sep 5, 1931Apr 19, 1932Jessie TaylorCorset stay
US2756435 *Nov 18, 1953Jul 31, 1956Bondor LtdCorset bones
FR1052300A * Title not available
GB791168A * Title not available
GB190006823A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3276041 *Jan 17, 1966Oct 4, 1966Maid Rite Wire Products CorpGarment boning member or stay
US3504378 *Jan 17, 1967Apr 7, 1970Dubin Haskell Jacobson Sa PropMethod of producing composite stiffening members for collars
US3531807 *Jan 28, 1969Oct 6, 1970Plasti Form Enterprises IncTwistable plastic garment stay
US4235240 *Aug 21, 1978Nov 25, 1980Bonnie Enterprises, Inc.Undergarment reinforcements
US4558705 *Jul 25, 1984Dec 17, 1985International Playtex, Inc.Brassiere support element
US4646746 *Sep 24, 1985Mar 3, 1987International Playtex, Inc.Brassiere support element
US5453064 *Jul 31, 1992Sep 26, 1995Natraflex Systems, Inc.Exercise glove incorporating rods which offer resistance to movement of fingers, hands, or wrists
US5484392 *Dec 14, 1994Jan 16, 1996Ergodyne CorporationWrist support and wrist support stay
US6186862Jul 29, 1999Feb 13, 2001Gerhard FildanBrassiere underwire with extended sewing flange
US6202221Dec 15, 1999Mar 20, 2001Higgins Supply Company, Inc.Flexible support stay
US6431946 *Mar 23, 2001Aug 13, 2002Fildan Accessories CorporationUnderwire assembly for brassieres and the like
US6526597Feb 12, 2002Mar 4, 2003Kevin D. ShepardWaistband stay for clothing
US7861324 *Mar 29, 2006Jan 4, 2011Catherine ChetelatAnti-creep waist-clothing
US20130042392 *Aug 19, 2011Feb 21, 2013Jeffrey E. OstrowInstant collar stays
Classifications
U.S. Classification2/258
International ClassificationA41C1/00, A41C3/12, A41C1/14, A41C3/00
Cooperative ClassificationA41C3/122, A41C1/14, A41C3/128, A41C3/126
European ClassificationA41C3/12B, A41C3/12B6, A41C1/14, A41C3/12B4