|Publication number||US20060105673 A1|
|Application number||US 10/987,818|
|Publication date||May 18, 2006|
|Filing date||Nov 12, 2004|
|Priority date||Nov 12, 2004|
|Also published as||CN2887092Y, CN201076018Y|
|Publication number||10987818, 987818, US 2006/0105673 A1, US 2006/105673 A1, US 20060105673 A1, US 20060105673A1, US 2006105673 A1, US 2006105673A1, US-A1-20060105673, US-A1-2006105673, US2006/0105673A1, US2006/105673A1, US20060105673 A1, US20060105673A1, US2006105673 A1, US2006105673A1|
|Original Assignee||Bull Lau|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (13), Referenced by (7), Classifications (6), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to improvements to a bra and related methods of its construction.
Bras of a kind which are made from a plurality of layers or plies of material which have been subjected to molding and trimming are known. Molded bras offer the benefit of convenient construction since the materials used, lend themselves conveniently to the introduction of a three dimensional cup shape to define the breast cups of a bra by a molding device. Such a device is normally a molding press having appropriately shaped mold portions (an upper and lower mold portion) intermediate of which a pre-form planar ply or assembly of plies of materials can be placed whereupon the molding press can then introduce the three dimensional shape into the plies.
This process avoids the time consuming steps of creating a three dimensional cup form by the more traditional method of stitching together a plurality of panels of material, each cut to an appropriate perimeter shape. Whilst speed of production is an important factor to the manufactures of such bras, aesthetics and comfort factors are also important as these will distinguish the final product from competing products, at the point of sale.
Some of the materials used in the known molded forms of bras, lend themselves to being subjected to heat (and/or adhesive) to allow for such materials to be bonded to other material of the bra. This allows for an assembly of plies of material of a bra to be laminated together. It has however been an issue in respect of bras of the molded kind, to ensure that the perimeter of the bra is capable of being defined in a robust manner. More often than not the perimeter of a bra includes stitching or overlooking to ensure that the perimeter remains in tact and is not subjected to fraying over a reasonable life span of the bra.
Stitching or overlooking can be a time consuming step in the manufacturing of a bra. It also requires accuracy in the stitch line in order for the appearance of the bra to remain attractive. Furthermore stitching can be prone to becoming undone or damaged resulting in the integrity of the perimeter of the bra being affected. The stitching itself and the material of the bra immediately adjacent to the stitching can also cause comfort issues to the wearer of a bra. Discomfort to a wearer is an undesirable result of a bra.
Accordingly it is an object of the present invention to provide a bra which addresses the abovementioned disadvantages or which will at least provide the public with a useful choice.
It is also an object of the present invention to provide a method of manufacturing a bra which results in a bra which addresses the abovementioned disadvantages or which will at least provide the public with a useful choice.
Accordingly in a first aspect the present invention consists in a molded bra defined in part by a layered assembly of a plurality of plies of flexible moldable material, said layered assembly generally defining bra regions of two molded breast cups a bridge intermediate of said two breast cups and a chest band from which each of said molded breast cups are disposed, said assembly including
a. a first of said plies (herein after “outward ply”) of a fabric material presenting a first outermost surface of said bra to the convex side of the breast cups of said bra, and
b. at least one other of said plies (herein after “inward ply”) disposed to the opposite side of said assembly where said outward ply is presented, presenting a second outermost surface of said bra to the concave side of said breast cups of said bra
wherein the layered assembly includes at least the inward and outward ply at the entire perimeter about the bra regions and wherein said outward ply has been folded at the perimeter to provide a hem thereof affixed to the inward ply.
Preferably said hem of said outward ply is adhesively affixed to said inward ply.
Preferably the hem is provided about the entire perimeter about said bra regions.
Preferably said perimeter of said bra regions generally consists of (a) a lower perimeter extending along the bottom edge of said chest band, (b) an outer perimeter extending along the upper edge of at least the regions inward of the distal ends of the chest band and transitioning to extend adjacent or along the outer perimeter edges of each of said breast cups, and (c) a neckline perimeter extending along the upper edges of each of said breast cups.
Preferably the outward ply is parallel to but not laminated with the plies of the remained of the assembly, save for at said hem.
Preferably the assembly, at each of the breast cups includes at least one ply of a foam material.
Preferably the foam material provides a flexibly rigid cup form.
Preferably the chest band, at least at regions extending inwardly from the distal ends towards said breast cups, includes no foam plies.
Preferably the chest band includes no foam plies.
Preferably said outward ply and said inward ply are coextensive with each other.
Preferably said inward ply is of a single piece of material.
Preferably said inward ply is of a single piece of fabric material.
In a further aspect the present invention consists in a method of forming a hem at a perimeter of part of a chest band of a bra of a kind including a layered assembly of a plurality of plies of flexible moldable material said layered assembly generally defining bra regions of two molded breast cups, a bridge intermediate of said two breast cups and a chest band from which each of said molded breast cups are disposed, said method including, locating a rigid substrate intermediate of
a. a chest band region located region of a first of said plies (herein after “outward ply”) of a fabric material presenting a first outermost surface of said bra to the convex side of the breast cups of said bra, and
b. a chest band region located region of at least one other of said plies (herein after “inward ply”) disposed to the opposite side of said assembly where said first outermost ply is presented, presenting a second outermost surface of said bra to the concave side of said breast cups of said bra,
said substrate providing part of its perimeter immediately adjacent the edge of said chest band where said hem is to be formed to define a rigid edge for the folding there over of a hem region of said outward ply to engage said outward ply to the inward ply, and removing the rigid substrate from between said inward and outward plies.
Preferably said outward ply is engaged to said inward ply by adhesion bonding at said hem region.
Preferably said hem region of said outward ply is engaged to said inward ply by the use of an intermediate adhesive tape.
This invention may also be said broadly to consist in the parts, elements and features referred to or indicated in the specification of the application, individually or collectively, and any or all combinations of any two or more of said parts, elements or features, and where specific integers are mentioned herein which have known equivalents in the art to which this invention relates, such known equivalents are deemed to be incorporated herein as if individually set forth. For the purposes of illustrating the invention, there is shown in the drawings a form which is presently preferred. It is being understood however that this invention is not limited to the precise arrangements shown.
A preferred form and methodologies of the present invention will now be described with reference to the accompanying drawings.
The present invention may be considered to consist in the foregoing and examples of which have been described with reference to the accompanying drawings in which:
With reference to the accompanying drawings there is shown in
The fully assembled bra of the present invention is of a kind which incorporates a ply or plies of foam material within the breast cups 3, 4 but which does not include such foam materials within at least a substantial part of the chest band region 5. Preferred construction details of the bra of
The hem 8 is preferably only of a width W sufficient to securely and permanently engage the exterior most ply 9 of the bra to the inside face of the bra. The hem may for example be between 4-12 mm in width. It preferably extends along the perimeter of the bra which may be defined as the outer perimeter line 10, the lower perimeter line 11 and the neckline perimeter 12 of the bra. Indeed the hem 8 is preferably continuous across the entire neckline 12 for both breast cups 3, 4 extending over the bridge region 14 between the adjacent breast cups 3, 4.
For further details of the assembly of preferred materials to define the bra of the present invention reference will now be made to the preferred method of its manufacture.
With reference to
Captured between the second foam ply 24 (and any other plies that may be associated therewith) is preferably an underwire assembly 25. The underwire assembly 25 is shown in plan view in
The excess material of the then molded precursor core assembly 15A and the then molded and laminated second foam ply 24 may then be cut to be removed from the breast cup form 20 to define the assembly as shown in
The next step in the manufacture of the bra of the present invention is to take one or for example both breast cup core assemblies 28 and laminate to their concave side, a ply of fabric material (the interior most ply 33). With reference to
The interior most ply 33 is preferably of a material such as nylon or spandex.
A vertical cross section through the then molded assembly of the breast cup core assemblies 28 and the interior most ply 33 is for example shown in
At this stage a wing shaped heat resistant panel (heat resistant wing panel 35) may be placed onto the interior most ply 33 and in part over the flange 29. The heat resistant wing panel 35 is preferably of a plan shape corresponding to the wing portion of the chest band region 5 of the bra. It is positioned onto the interior most ply 33 in a location where the chest band region 5 of the bra is to be provided in part by the interior most ply 33. The heat resistant wing panel is placed onto the same side of the interior most ply 33 as where the breast cup core assembly 28 is provided. The heat resistant wing panel 35 is provided to prevent any bonding of any other of the layers of the bra provided at this region to the interior most ply 33 on that side thereof where the heat resistant wing panel 35 is located.
The heat resistant wing panel 35 is made from a heat resistant material which is of a kind which may be transparent and non-elastic. It may for example be a plastic film material with some integral rigidity. It is preferably slightly sticky or adhesive on one side (that side to engage with the interior most ply 33) and not adhesive on the other side. The plastic material will not melt below a temperature of for example 180 degrees Celsius. As this temperature will not be reached during the process of manufacturing of the bra, the heat resistant material will not permanently bond with the plies of material immediately adjacent thereto. As will be explained further on, this material will be removed from the bra by hand but is provided for the purposes of allowing more convenient working of the material for the subsequent steps of the manufacturing of the bra.
The interior most ply 33 may then be trimmed by for example a scissors to cutaway excess material of the interior most ply 33 by cutting along the perimeter line of the heat resistant wing panel 35 and at least part of the perimeter of the breast cup core assembly. Such cutting is for example demonstrated in
The result of such cutting may define an assembly as for example shown in
From here the next step is preferably to apply the clasps or catches or taches to the distal ends of the interior most ply 33 of the bra. Preferably the clasps 38 are adhered by an adhesive and/or heat and/or ultrasonic welding to the interior most ply 33. As can be seen with reference to
The next stage in the method of manufacturing the bra of the present invention is to prepare the exterior most ply for the bra.
Whilst reference herein has been made to the interior most ply and the exterior most ply, the terms interior and exterior in this regard relate to the plies of material which are outermost on the bra. Reference to the interior most ply is not a ply located within the assembly of materials but is the ply of material which is to be adjacent most the body of the wearer. The outer most ply is the ply of material of the assembly of the bra which in a substantial part, is distal most from the body of the wearer.
Preparation of the exterior most ply 9 involves the use of a template 40. The template 40 may for example be a substrate of a paper or card like material. Drawn or depicted on the template 40 is an outline of at least the lower perimeter line 11 and outer perimeter line 10 of the final form of the bra. This is as for example shown in
This material is sticky on the side facing the template 40 so that it can adhere to the template 40. Applied over the heat resistant plaster 43 is an assembly of layers the first consisting of an adhesive coated tape and the second band of elastic material. The adhesive coated tape is provided at the assembly of this additional layer of tape away from the heat resistant plaster 43. The band of elastic material is provided to adhere to the heat resistant plaster 43. This may be by a suitable adhesive which can result in the sticking of this additional assembly of tape to the heat resistant plaster yet be able to be removed therefrom at a later stage. Glue is applied on the non-sticky side of the heat resistant material so that the elastic band can temporarily stay on the heat resistant material. One side of the adhesive coated tape is sticking on the elastic band. The whole of the template 40 (with the heat resistant plaster, the elastic band and the adhesive coated tape on top of it) is then placed on the thermal pressing machine as is shown in part in
The tape is of a kind which is adhesive on each side. The adhesive applied on both sides of the tape will melt when heated during the process of the manufacture of this bra enabling two plies of material of the bra to be bonded together by the adhesive coated tape. The adhesive coated tape is preferably also slightly elastic and can therefore provide mild elasticity to the material that is bonded. One example of an adhesive coated tape of this kind will result in the adhesive melting slightly at around 120 degrees Celsius. However at around 150 to 160 degrees Celsius the adhesive will completely melt and provide strongest adhesion ability. Normally the adhesive coated tape is supplied from the manufacture where one side of the tape is pre-covered with a non-stick paper which is peeled away for the purpose of exposing the adhesive coated tape for subsequent heat bonding.
The elastic band with which the adhesive coated tape is engaged, is of a kind which may for example be one commonly used in garments or bras. The adhesive tape on both sides of the elastic band allows the exterior most ply to be attached to the interior most ply with the elastic band between the two plies along the perimeter of the bra. No stitching is required to affix the elastic band in the bra.
With reference to
The exterior most ply 9 may be of a material such as nylon or spandex or lycra.
The exterior most ply 9 is thereafter trimmed about the tape portions now present (being the second adhesive coating over the elastic band and the then bonded adhesive coating between the elastic band and the fabric) to the outer and lower perimeter line disposed regions thereof. Prior to the application of the exterior most ply 9 to the other components of the bra, the exterior most ply 9 has introduced therein, molded relief provided by a molding device of a kind as for example shown in
At some stage the exterior most ply 9 may have introduced therewith apertures 58 at a region of the exterior most ply 9 to correspond with the distal ends of the chest band region 5. The assembly 36 and the then molded and in part trimmed exterior most ply 9A as shown in
With reference to
No bonding of the exterior most ply 9 occurs with other regions of the assembly 36 at this stage. As such the exterior most ply 9 can be peeled back from the assembly 36 as for example shown in
Since the wing regions of the chest band 5 do not incorporate any material of significant rigidity (i.e. they preferably do not incorporate any foam material) it would be difficult to manipulate the wing panel regions of the various plies of material of the bra for the purposes of the steps of assembly of the bra. It is for this reason that the heat resistant wing panel 35 is employed during the assembly of the present invention. The heat resistant wing panel is of a material which although flexible has some structural rigidity. Such structural rigidity allows for the outer perimeter line 10 and lower perimeter line 11 at the wing regions of the bra to be and remain clearly defined. It also provides a significantly rigid edge along the part of the outer and lower perimeter lines 10, 11 of the bra at the wing region of the chest band region 5 for the purposes of allowing the folding of the hem 8 and the bonding of the hem 8 to the interior most ply 33. Without the heat resistant wing panel 35 being provided during the assembly of the bra it would make it very difficult to accurately define the outer and lower perimeter line at the chest band region of the bra. This is not so for the perimeter defined by the breast cups since these consist of a number of layers which create a more rigid edge for the exterior most ply to fold about. It will also make it difficult for the hem to be folded about the outer and lower perimeter line defined by the assembly 36. The assembly 36 without the heat resistant wing panel 35 would not provide an edge for the folding of the hem 8 thereabout which is sufficiently defined and rigid for such purposes of folding.
However it is undesirable for the heat resistant wing panel to remain with the bra after its assembly. As such there is a need for the wing panel to be able to be exposed for its removal. It is for this region that the neckline perimeter of the bra is also not simultaneously bonded at its hemline when the outer and lower perimeter line disposed hem 8 of the exterior most plies are affixed. A subsequent affixing of the hem 8 at the neckline of the breast cup forms allows prior to such affixing, the removal of the heat resistant wing panel.
However as mentioned earlier in the specification it is desirable that substantially the entire perimeter of the bra has a hem provided. As such, once the heat resistant wing panel has been removed it is then possible for the hem 8 at the neckline perimeter 12 of the bra to be affixed. A trimming of excess material of the exterior most ply 9 can occur to follow substantially the neckline perimeter of the assembly 36. However again a margin beyond the neckline perimeter 12A of the assembly 36 may be provided to the neckline edge 12B of the exterior most ply 9. This margin is preferably the same as the margin of the hem 8 to be provided at the neckline perimeter of the bra. A material like that of the tape 42 which is or includes the adhesive coated tape can be applied to the neckline perimeter 12B of the exterior most ply for its subsequent folding of the hem 8 of the exterior most ply 9 about the neckline perimeter 12A of the assembly 36. The application of the adhesive coated tape to the hem region 8 of the exterior most ply 9 at the neckline perimeter may also include the application of an elastic band like that incorporated in the outer and lower perimeter lines 10 and 11 of the bra.
A further reason for not applying any adhesive coated tape to the neckline perimeter of the exterior most ply prior to the exterior most ply having been molded by the bullet molder, is that the neckline perimeter would be very proximate to the regions of the exterior most ply 9 at where the surface relief is molded into the exterior most ply 9 by the bullet molder. As such the neckline perimeter of region of the exterior most ply during such molding will be subjected to heat and if an adhesive coated tape were applied at this point in time the effectiveness of the adhesive coated tape for subsequent use may be affected.
A pre-folded condition is as for example shown in
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|Cooperative Classification||A41C5/005, A41C3/0014|
|European Classification||A41C3/00C, A41C5/00B|
|Feb 18, 2005||AS||Assignment|
Owner name: REGINA MIRACLE INTERNATIONAL LIMITED, HONG KONG
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAU, BULL;REEL/FRAME:016287/0666
Effective date: 20050203