Method and system for standardized classification of undergarments
View Patent ↗The clamps of the present invention are initially placed apart with a specific separation to properly hold the garments in the constant rate of expansion (CRE) machine. The test method preferably uses panties that have been prepared according to specific test criteria and the CRE machine pre-programmed with specific parameters including the preload and the initial rate of extension. Before testing commences, the midpoint of an individual panty is placed at the center of the clamps. After a pre-determined resistance is sensed by the CRE machine, the rate of extension and the load instantly increase to test the panty's percent of elongation and modulus. This method is repeated for several styles and sizes of panties to obtain accurate, consistent elongation and modulus measurements for each style and size. These measurements thus categorize all of the measured styles and sizes into a standardized panty support classification system.
1. A clamp system for a constant rate of extension machine comprising:
a first clamp secured to a base of the machine; a second clamp secured to the base of the machine; wherein each of said first and second clamps further comprise
a securing arm having a first end secured to the base;
a second arm extending from a second end of said securing arm and perpendicular to said securing arm;
a third arm extending from said second arm parallel to said securing arm; a fourth arm extending towards said securing arm and having a rounded head thereon;
wherein said first clamp and said second clamp have an initial position and at least one of said first clamp and said second clamp moves with a predetermined rate and a predetermined force from said initial position.
2. The clamp system according to claim 1 , wherein said first clamp and said second clamp are each C-shaped.
3. The clamp system according to claim 1 wherein said rounded heads of said first clamp and said second clamp are separated by a predetermined distance in said initial position.
4. The clamp system according to claim 1 , wherein said predetermined distance is 254 mm.
5. A method for testing undergarment support in a constant rate of extension machine comprising:
a. placing an undergarment on a first clamp portion of a first clamp and over a second clamp portion of a second clamp in the machine;
b. causing said first clamp and said second clamp to move apart at a first predetermined rate and with a first predetermined force;
c. sensing a force from the undergarment as said first clamp and said second clamp separate;
d. causing said first clamp and said second clamp to move apart at a second predetermined rate and with a second predetermined force based upon said sensed force.
6. The method according to claim 5 , further comprising before step a, securing said first clamp and said second clamp a predetermined distance apart.
7. The method according to claim 5 , wherein steps a to d are repeated and each repetition measures another undergarment.
8. The method according to claim 5 , wherein steps a to d are repeated to measure at least two different styles and sizes of undergarment.
9. The method according to claim 5 , wherein said undergarment is placed at a midpoint of a top of a waist band and a top of a leg hole on said first clamp portion.
10. The method according to claim 5 , wherein said undergarment is placed at a predetermined distance from a waist band and a top of a leg hole on said first clamp portion.
11. The method according to claim 9 , wherein said predetermined distance is 4 inches.
12. The method according to claim 7 , further comprising collecting data representing force against said first and second clamps as said first and said second clamps move apart.
13. The method according to claim 12 , further comprising collecting data representing elongation of the undergarment between said first and said second clamps as said first and second clamps move apart.
14. The method of testing according to claim 13 , further comprising manipulating said collected data to form elongation classifications for the undergarment.
15. The method according to claim 6 , wherein said predetermined distance is 254 mm.
16. The method according to claim 5 , wherein said first predetermined rate is 350 mm/min and said first predetermined force is 0.1 kg.
17. The method according to claim 5 wherein said second predetermined rate is 508 mm/min and said second predetermined force is 4.0 kg.
18. The method according to claim 5 , wherein said undergarment is a woman's panty.
19. The method according to claim 18 , wherein said panty is prepared according to testing criteria.
20. The method according to claim 19 , wherein said panty is relaxed on a flat surface at a standard atmospheric condition of 70° F.±2° F. temperature (or 21° C.±1° C.) and 65%±2% relative humidity for at least four hours.