Patent Grant
9155348
This application claims priority to and the benefit of Korean Patent Application No. 10-2011-0040364 filed in the Korean Intellectual Property Office on Apr. 28, 2011, the entire contents of which are incorporated herein by reference.
The present invention relates to a hat using a shape-maintenance enhancing member and a method for manufacturing the same. In particular, the present invention relates to a hat using a shape-maintenance enhancing member that can secure the exterior appearance of the hat as designed by preventing wrinkles around a sewing portion with a flexible tape and keeping the shape of the hat to stay the same as the initial design, and a method for manufacturing the hat.
In general, in manufacturing of a head receiving portion of a hat, a plurality of pieces of fabric are sewed to form the shape of the head receiving portion and the sewed portion is surrounded with a piece of fabric cut in the shape of a tape and then sewing is performed to prevent exposure of the sewed portion.
As for the tape-shaped cloth, a flexible tape, e.g., a woven bias-cutting tape or a tricot tape, is used to be smoothly aligned along the curved portion connected by sewing in the head receiving portion.
However, in the finished head receiving portion, the flexible tape has disadvantage due to its characteristic of tension that causes wrinkles in the portion where the plurality of piece cloths are connected in the head receiving portion. The entire exterior shape of the hat may be loosened or shrunk so that it may be different from the pattern in the initial design.
In order to solve the problem, the possible deformation of the fabric and the tape are considered in the design phase, or the shape of the hat is adjusted with a high-temperature steam mold after sewing is finished.
However, it is difficult to accurately measure the amount of deformation due to properties of the fabric or the flexible tape, and the shape deformed during the sewing is not fully restored to its previous condition. Moreover, the shape adjusted by the steam mold is deformed once again as time passes because the flexible tape and a plurality of panels forming the head receiving portion are gradually contracted.
The contraction of the fabric and the flexible tape of the head receiving portion causes deformation of the external appearance of the hat, and the quality of the hat may be deteriorated.
The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
The present invention has been made in an effort to provide a hat using a shape-maintenance enhancing member that can stabilize the shape of a head receiving portion of the hat, and a method for manufacturing the same.
In addition, the present invention provides a hat using a shape-maintenance enhancing member that can maintain the initial shape of the head receiving portion without causing deformation of interior and exterior appearances, such as unevenness of the sewing portion or twist of the flexible tape not only at initial design but also after a long period of time, and a method for manufacturing the same.
A method for manufacturing a hat including a head receiving portion formed of a plurality of panels and a shape-maintenance enhancing member surrounding sewing portions of the plurality of panels forming the head receiving portion, includes: cutting fabric into panels for forming the head receiving portion; primarily sewing the cut-out panels; preparing the shape-maintenance enhancing member with properties of a heat fusion and thermal fixation, to be coupled with the sewing portion of the primarily sewn panels; secondarily sewing the shape-maintenance enhancing member with the plurality of panels forming the head receiving portion; and forming the secondarily sewn head receiving portion to the shape of a hat through a molding process using a steam mold.
A hat according to an exemplary embodiment of the present invention includes a head receiving portion formed of a plurality of panels and a shape-maintenance enhancing member provided in sewing portions of the plurality of panels forming the head receiving portion. The shape-maintenance enhancing member includes a main body portion disposed on the sewing portion and a wing portion surrounding the sewing portion, and the main body portion includes a shape-maintenance enhancing layer formed of a material having a heat fusion and thermal fixation property and a cover portion connected with the wing portion.
According to an exemplary embodiment of the present invention, contraction of a flexible tape used to surround a sewing portion between pluralities of panels forming a conventional hat can be avoided from a sewing process.
In addition, according to the exemplary embodiment of the present invention, when the high-temperature steam mold applies heat and pressure to the shape-maintenance enhancing member to form the shape of the hat after the hat is sewn, the shape-maintenance enhancing layer in the main body portion of the shape-maintenance enhancing member is heat-melted between the sewing portion of the head receiving portion and the cover layer of the main body portion and then thermally fixed from cooling so that contraction of the head receiving portion can be prevented.
Further, according to the exemplary embodiment of the present invention, the desired shape of the head receiving portion can be produced as originally designed without regarding contraction of panels forming the head receiving portion and the flexible tape that may possibly occur during the cutting-out process of the panels.
In addition, according to the exemplary embodiment of the present invention, the shape-maintenance enhancing member is fixed to the head receiving portion so that the entire shape of the hat can be stabilized and the head receiving portion of the hat can maintain smooth interior and exterior appearances without any unevenness or twist after a long period of time.
Further, according to the exemplary embodiment of the present invention, the shape-maintenance enhancing layer is integrated with the sewing portion of the head receiving portion so that the shape of the hat can be maintained uniformly and smoothly for a long period of time without insertion of a support band or an assistance band.
Hereinafter, an exemplary embodiment of the present invention will be described in further detail with the accompanying drawings.
In the drawings, explanatorily irrelevant portions are omitted to clearly describe the present invention, and like reference numerals designate like elements throughout the specification.
Furthermore, in case it is judged that the detailed description of the well-known function or structures relevant to the embodiments may needlessly obscure the gist of the present invention, such a description will be omitted.
As shown in
In further detail, as shown in
In particular, as shown in
The main body portion 107a may include a shape-maintenance enhancing layer 107a-1 formed of a material having thermal fusion/thermal fixation properties so as to be melt at a temperature of approximately 100° C., preferably at 95° C., and cooled and thermally fixed at the same time, preferably having self adhesiveness, and may further include a cover layer 107a-2 for preventing exposure of the shape-maintenance enhancing layer 107a-1 to the outside by covering the same.
The shape-maintenance enhancing layer 107a-1 may be a polymer synthetic resin having flexibility and elasticity for convenience of sewing, or preferably has self adhesiveness.
The shape-maintenance enhancing layer 107a-1 may be formed in the shape of a flexible and elastic film to provide smoothness and maintain a smooth shape, and preferably may be a polyolefine-based, polyurethane-based, or polyamides-based polymer synthetic resin.
The polymer synthetic resin may be directly coated or impregnated to the cover layer 107a-2.
As shown in Table 1, by virtue of the film formed of the polymer synthetic resin, a needle can easily penetrate the shape-maintenance enhancing layer 107a-1 in sewing thereof, and the shape-maintenance enhancing layer 107a-1 is adapted to be melted by a temperature of about approximately 100° C., that is, heat and pressure from a steam mold, cooled, and at the same time, thermally fixed. In addition, the shape-maintenance enhancing layer 107a-1 has a thickness of 10-100 μm, preferably, 20-60 μm (1 micron= 1/1000 mm) to prevent contraction and loose of the panel 110 or 110′ or the cover layer 107a-2 by being not exposed through but coupled to the panel 110 or 110′ or the cover layer 107a-2 in a fixed manner. The sewing portion is basically stiff and uneven because a fabric panel is multiple layered in sewing, but in the present exemplary embodiment, the shape-maintenance enhancing layer 107a-1 is made thin so that there is hardly no thickness difference before and after completion, the unevenness can be solved, and the sewing portion can be flat.
The cover layer 107a-2 may be integrally formed to the wing portion 107b, and preferably, like the wing portion 107b, the cover layer 107a-2 may be formed of a flexible tape, e.g., a woven bias cutting tape or a tricot tape, and in this case, the cover layer 107a-2 can be smoothly arranged without being bent along the portion connected by sewing in the curvaceous head receiving portion 101.
Unlike the conventional example, in the hat 100 using the above-described shape-maintenance enhancing member 107 can be realized with the initial design shape without regarding contraction and loose of the panels forming the head receiving portion 101 and the flexible tape in cutting of the panels. For example, the length of the head height direction of the hat is the same as that in the initial design after the hat is completed.
In addition, according to the exemplary embodiment of the present invention, the shape-maintenance enhancing layer 107a-1 has a thickness of 10-100 μm, preferably, 20-60 μm (1 micron= 1/1000 mm), and therefore the needle can be easily penetrated and the sewing can be easily performed without twist of the flexible tape because the shape-maintenance enhancing layer 107a-1 has predetermined elasticity.
In addition, when heat and pressure are applied to the hat using a high-temperature steam mold for molding of the shape of the hat after the hat is sewn, the shape-maintenance enhancing layer 107a-1 in the main body portion 101 of the shape-maintenance enhancing member 107 is melted but cooled quickly at room temperature so that shape-maintenance enhancing layer 107a-1 is thermally fixed between the sewing portion 113 and the cover layer 107a-2 of in main body portion 107a of the head receiving portion, thereby preventing contamination of the cover layer 107a-2 or the sewing portions 113 and 113′ and preventing contraction and loose of the head receiving portion 101.
That is, the whole shape of the hat can be stabled, the wrinkle in the exterior appearance of the head receiving portion 101 can be improved, and the inner surface of the head receiving portion 101 can be flat without having torsion or twist, thereby increasing commercial value of the hat.
Hereinafter, referring to
As shown in
In this case, sewing portions 113 and 113′ are provided as margins in the cutting for connection by sewing between the neighboring panels 110 and 110′ among the cut panels 110 and 110′ along the sewing line 111.
Sequentially, the sewing portions 113 and 113′ of the primarily sewn panels are bent back toward the panels 110 and 110′ thereof to arrange the sewing portions 113 and 113′ in both directions and the shape-maintenance enhancing member 107 is prepared (S30).
In order to prepare the shape-maintenance enhancing member 107, a shape-maintenance enhancing layer 107a-1 may be formed as a tape, the cover layer 107a-2 and the wing portion 107b-1 are formed as a single flexible tape, and the cover layer 107a-2 and the wing portion 107b-1 may be prepared by coating or impregnating a material having heat fusion/thermal fixation property to the flexible tape.
The shape-maintenance enhancing member 107 is coupled with the sewing portions 113 and 113 by secondary sewing (S40).
An external guide means may be used for constant alignment of the shape-maintenance enhancing member 107 on the sewing portions 113 and 113′.
Simultaneously or sequentially with the arrangement of the shape-maintenance enhancing layer 107a-1, the cover layer 107a-2 of the shape-maintenance enhancing member 107 may be aligned.
In the case that the wing portion 107b uses an integrally formed flexible tape, a flexible tape formed by integrally forming the cover layer 107a-2 and the wing portion 107b may be disposed on the sewing portions 113 and 113′ independently with the shape-maintenance enhancing layer 107a-1.
When the shape-maintenance enhancing member 107 is coupled by sewing on the sewing portions 113 and 113′, the wing portion 107b surrounds the sewing portions 113 and 113′.
As shown in
When the hat is completed through the above-process, heat and pressure are applied to the hat using a steam mold to shape the hat through a molding process (S50).
In this case, the shape-maintenance enhancing layer 107a-1 formed of a polymer synthetic resin having a thickness of 10-100 μm, preferably 20-60 μm (1 micron= 1/1000 mm) is melted between the sewing portion 113 of the head receiving portion 101 and the cover layer 107a-2 of the main body portion 107a and then thermally fixed when being cooled such that constant fixation can be provided for a long period of time with respect to the head receiving portion 101, thereby preventing contraction and loose of the head receiving portion 101.
Meanwhile, the shape-maintenance enhancing layer 107a-1 also provides a predetermined level of elasticity together with the fixation when being thermally fixed by cooling after melting so that the shape can be stably maintained.
While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Thus, the present invention is well adapted to carry out the objectives and attain the ends and advantages mentioned above as well as those inherent therein. While presently preferred embodiments have been described for purposes of this disclosure, numerous changes and modifications will be apparent to those of ordinary skill in the art. Such changes and modifications are encompassed within the spirit of this invention as defined by the claims.
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