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US 6,138,279 AGranted
Visor cap, the visor insert therefore and the methods of manufacturing
AssigneeBollman Hat Company
InventorAllan E. Gore
Life of this patent
Estimating the term…
Abstract
This invention relates to hats and especially caps which have a visor such as a brim or bill and more particularly to the visor insert for maintaining a lasting shape to the visor once the insert has been positioned in the visor portion of the hat and the method of manufacturing the visor insert and the cap associated therewith whereby the visor insert will maintain a long lasting memory even under high heat moisture and stress distortion.
Claims23
The method of manufacturing a visor insert for a hat comprising the steps of:
- a) providing a visor insert of flexible, long lasting memory thermoplastic resin material having a thickness from about 0.045" to about 0.075", a tensil strength of between about 2750 psi to about 5000 psi, a flexural strength of between about 1680 psi and about 8500 psi, a flexural modulus elasticity of between about 45,000 psi to about 280,000 psi, and a melt temperature of about 470.degree. F. to about 510.degree. F.;
- b) flexing said visor insert to a desired shape;
- c) placing said flexed visor insert in a jig set to said desired shape;
- d) heating said visor insert in said jig to a temperature of about 350.degree. F. and about 375.degree. F. and maintaining said temperature for at least about 15 minutes minimum to reset the crystalline structure and long lasting memory of said thermoplastic resin material of said visor insert to the desired shape;
- e) gradually cooling said visor insert in said jig to a temperature of less than about 150.degree. F. over a period of about 40 minutes to about 60 minutes after said at least 15 minutes heating to avoid degradation and loss of said reset long lasting memory and removing from said jig;
- and
- f) whereby said visor insert upon removal from said jig will retain the desired shape even under distortion of said visor insert and under temperatures of about 180.degree. F. to about 200.degree. F. for a period of at least 5 hours without loss of said reset long lasting memory.
4 more elements
The method of manufacturing a visor insert for a hat comprising the steps of:
- a) providing a visor insert of flexible, long lasting memory thermoplastic resin material having a thickness from about 0.045" to about 0.075", a tensil strength of between about 2750 psi to about 5000 psi, a flexural strength of between about 1680 psi and about 8500 psi, a flexural modulus elasticity of between about 45,000 psi to about 280,000 psi, and a melt temperature of about 470.degree. F. to about 510.degree. F.;
- b) heating said visor insert to a temperature of about 350.degree. F. and about 375.degree. F.;
- c) placing said heated visor insert in a mold and set to desired shape;
- d) maintaining said temperature for at least about 15 minutes minimum to reset the crystalline structure and long lasting memory of said thermoplastic resin material of said visor insert to the desired shape;
- e) gradually cooling said visor insert in said mold to a temperature of less than about 150.degree. F. over a period of about 40 minutes to about 60 minutes after said at least 15 minutes heating to avoid degradation and loss of said reset long lasting memory and removing from said mold;
- and
- f) whereby said visor insert upon removal from said mold will retain the desired shape even under distortion of said visor insert and under temperatures of about 180.degree. F. to about 200.degree. F. for a period of at least 5 hours without loss of said reset long lasting memory.
4 more elements
A flexible thermoplastic resin visor insert having a reset crystalline structure adapted to retain its desired shape even under distortion under temperatures of about 180.degree. F. to about 300.degree. F. for a period of at least five hours;
- a) said visor insert made from a thermoplastic resin material that has been heated to a temperature of from about 350.degree. F. to about 375.degree. F. for at least about 15 minutes minimum and gradually cooling to a temperature of less than 150.degree. F. over a period of from about 40 minutes to about 60 minutes;
- b) said thermoplastic resin material having a thickness of about 0.045" to about 0.75";
- c) said thermoplastic resin material having a tensil strength of between about 2750 psi to about 5000 psi;
- d) said thermoplastic resin material having a flexural strength of between about 1680 psi to about 8500 psi;
- e) said thermoplastic resin material having a flexural modulus elasticity of between about 45,000 psi to about 280,000 psi;
- and
- f) said thermoplastic resin material having a melt temperature of between 470.degree. F. to about 510.degree. F.
4 more elements
Dependencies are inferred from the claim text.