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  Method for stiffening headgearUSPTO Application #: 20060112475Title: Method for stiffening headgear Abstract: A method for stiffening a headgear utilizes knitted thermo polyester linings made of threads consisting of fine and soft filaments extracted from thermo polyester pellets to sew with ready-cut fabrics to form a headgear. Subsequently, the headgear is heated by a mold such that the fiber of the linings will be appropriately stiffened, thereby shaping an upstanding and neat headgear as desired. (end of abstract) Agent: Leong C Lei - Walnut Creek, CA, US Inventor: Tai-Kuang Wang USPTO Applicaton #: 20060112475 - Class: 002195500 (USPTO) Related Patent Categories: Apparel, Head Coverings, Having Crown And Horizontally Extending Visor (e.g., Baseball Cap, Etc.), Having Shape Retaining Internal Form (e.g., Plate, Wire Frame, Etc.) The Patent Description & Claims data below is from USPTO Patent Application 20060112475. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Technical Field of the Invention [0002] The present invention relates to a method for stiffening a headgear, which is full of aesthetic feelings with a fixed shape. Besides, as the stiffened linings are processed without adding any harmful chemical, such as HCHO, the method of the invention is especially applicable to the manufacturing of headgears. [0003] 2. Description of the Prior Art [0004] A conventional headgear is basically composed of a crown and a hard peak. As the front side of the crown is the most apparent portion, whether or not the headgear is neat, upstanding and good looking depends on the expression of the front side of the crown. [0005] In the manufacturing of headgear of the prior art, in order to make the headgear look upstanding and neat, the crown is adhered with linings of various kinds. Since it is required that the adhered linings must have certain rigidity, resin is generally used as an adhesive in this respect. As shown in FIG. 1, in the manufacturing of headgear of the prior art, a lining 10 is applied with an adhesive of resin 11, such that the resin 11 is infiltrated into the fiber of the lining 10. Upon being baked by a heating device, the lining 10 along with the resin 11 will dry out and becomes a hardened board. The hardened lining 12 is then integrally adhered to and sewn with a ready-cut fabric 13 to form a front piece of the crown, which is subsequently sewn to the front side of the crown, such that the headgear will look upstanding and neat. [0006] However, there exists a disadvantage in the above-mentioned headgear process, i.e. heating the resin adhesive will generate HCHO which, being a colorless and easily melted irritating gas, is harmful to human body, since it can be absorbed by human through aspiratory system, and the solvent of HCHO, formalin, will be absorbed through digestive system. Generally, formalin, a 35%-40% HCHO solvent, is used as an antiseptic for soaking medical sections and personal/animal specimens. HCHO is definitely harmful to human body, since it can enter human body to connect with amine of protein, and cause alteration of the protein, thereby disturbing the metabolism of cells and seriously destroying cell organization. According to international reports, when formalin has a density exceeding 0.12 mg/m3, it will easily cause asthma in children. Therefore, HCHO has been announced by IARC (International Agency for Research on Cancer) as a suspectable carcinogen. In view of the above, headgears composed of heated resin might cause diseases to the users after long-term use. [0007] In addition, infiltrating resin into the fabric will make the fabric unventilated, rendering the user feel hot and constantly sweat. [0008] Accordingly, the inventor has disclosed a method for stiffening a headgear, which would not generate HCHO during process, and can produce a headgear of upstanding and neat shape for safely used by the consumers. SUMMARY OF THE INVENTION [0009] The primary purpose of the present invention is to provide a method for stiffening a headgear which can have an upstanding and neat shape. [0010] The secondary object of the invention is to provide a method for stiffening a headgear, in which the linings of the headgear can be stiffened without the application of a heated resin, thus avoiding the occurrence of any poisoned material such as HCHO and allowing the user to wear the headgear more safely. [0011] A further object of the invention is to provide a method for manufacturing a headgear which has better ventilation. [0012] In addition, in view of the characteristic that thermo setting polyester material will commence softening at a temperature of around 80.degree. C. and become melted at around 100.degree. C., the soft and fine fiber can be melted and then cooled to form a relatively thick and hard material, thereby allowing the headgear to have a stiffening effect. Whereas general polyester can only be melted at a higher temperature of 280.degree. C.; therefore, the thermo setting polyester is comparatively applicable to the headgear that requires a stiffening appearance. [0013] To obtain the above objects, the invention utilizes the knitted thermo polyester linings made of threads consisting of fine and soft filaments extracted from thermo polyester pellets to sew with the ready-cut fabrics, and then combined with the peak and the sweatband to form a headgear. Subsequently, the headgear together with linings is heated by a mold, thereby shaping an upstanding and neat headgear. [0014] The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example. BRIEF DESCRIPTION OF THE DRAWINGS [0015] FIG. 1 shows applying a resin on the crown fabric according to the prior art. [0016] FIG. 2 shows sewing the hardened lining with the ready-cut fabric according to the prior art. [0017] FIG. 3 shows the process of sewing to combine two ready-cut fabrics according to the present invention. [0018] FIG. 4 is an exploded view of the front piece of the crown according to the invention. [0019] FIG. 5 is a perspective view of the front piece of the crown. [0020] FIG. 6 is a bottom view of the headgear made according to the invention. [0021] FIG. 7 shows the process of heating to stiffen the linings according to the invention. Continue reading... Full patent description for Method for stiffening headgear Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method for stiffening headgear patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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