Molded non-woven fabrics and methods of molding
View Patent ↗Methods of molding a non-woven fabric are provided. The methods include selecting a non-woven fabric having a web of fibers having a uniform fiber orientation in all directions, compressing the non-woven fabric between a top mold and a bottom mold, and maintaining the non-woven fabric between the top and bottom molds for a predetermined dwell time to define a molded depth and a molded diameter in the non-woven fabric.
1. A method of molding a brassiere from a non-woven fabric, comprising:
selecting a non-woven fabric having a web of fibers having a uniform fiber orientation in all directions;
conditioning the non-woven fabric in a washing procedure with mechanical agitation with water and with or without detergents, thereby breaking down the bonds between some fibers to facilitate molding the fabric;
compressing said non-woven fabric between a top mold and a bottom mold with the non-woven fabric at molding temperature of at least about 200 degrees Fahrenheit; and
maintaining said non-woven fabric between said top and bottom molds for a predetermined dwell time of at least about 5 seconds to define a breast covering portion comprising a pair of breast cups, each cup having a molded depth and a molded diameter in the non-woven fabric.
2. The method of claim 1 , wherein conditioning said non-woven fabric with mechanical agitation further comprises adding a wetting agent.
3. The method of claim 2 , wherein said wetting agent comprises a fabric softener.
4. The method of claim 1 , wherein selecting said non-woven fabric having said web of fibers comprises selecting multicomponent fibers having a blend of a low-melting temperature polymer and a high-melting temperature polymer.
5. The method of claim 1 , wherein said molding temperature is between about 320 and 360 degrees Fahrenheit.
6. The method of claim 1 , wherein said predetermined dwell time is between about 8 and 18 seconds.
7. The method of claim 1 , further comprising selecting said top and bottom molds to impart said molded depth to greater than 1 inch.
8. The method of claim 7 , wherein said molded depth is between about 2 and 10 inches.
9. The method of claim 1 , further comprising applying a wetting agent to at least one of the non-woven fabric, the top mold, and the bottom mold, prior to compressing the non-woven fabric between said top and bottom molds.
10. A method of molding a brassiere from a non-woven fabric, comprising:
selecting a non-woven fabric having a web of fibers having a uniform fiber orientation in all directions;
selecting a top mold and a bottom mold to impart a molded depth and a molded diameter to the non-woven fabric, said top and bottom molds having a depth that is larger than said molded depth by about 30 to about 50 percent and a diameter that is larger than said molded diameter by less than about 10 percent;
compressing said non-woven fabric between said top and bottom molds with the non-woven fabric at a molding temperature of at least about 200 degrees Fahrenheit to form a breast covering portion comprising a pair of breast cups; and
maintaining said non-woven fabric between said top and bottom molds for a predetermined dwell time of at least about 5 seconds.
11. The method of claim 10 , further comprising conditioning said non-woven fabric in a washing procedure with mechanical agitation with water and with or without detergents, thereby breaking down the bonds between some fibers before compressing said non-woven fabric between said top and bottom molds.
12. The method of claim 11 , wherein conditioning said non-woven fabric with mechanical agitation further comprises adding a wetting agent.
13. The method of claim 12 , further comprising applying a wetting agent to at least one of said non-woven fabric, said top mold and said bottom mold prior to compressing said non-woven fabric between said top and bottom molds.
14. The method of claim 10 , wherein said web of fibers are bonded to and/or entangled with one another.