EP1570251A4 - Cryogenic processes for treating pantyhose - Google Patents
Cryogenic processes for treating pantyhoseInfo
- Publication number
- EP1570251A4 EP1570251A4 EP02794238A EP02794238A EP1570251A4 EP 1570251 A4 EP1570251 A4 EP 1570251A4 EP 02794238 A EP02794238 A EP 02794238A EP 02794238 A EP02794238 A EP 02794238A EP 1570251 A4 EP1570251 A4 EP 1570251A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- pantyhose
- temperature
- time period
- over
- cryogenic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0087—Wear resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4871—Underwear
Definitions
- the present invention is generally related to the quality of pantyhose and, more particularly, is related to a process for enhancing the durability of pantyhose.
- Fabrics produced by machines include fabrics knitted from continuous filaments such as ladies' hosiery and the like. Filament fabrics are made of elongated knittable or continuous structure, as distinguished from spun yarn.
- the continuous filaments are
- pantyhose and other thin fiber fabrics are very susceptible to laddering. For example, in pantyhose, a loop stitch broken at the knee may cause a ladder along the length of the stocking When pantyhose are worn, they are susceptible to lateral tension, which tends to weaken and break loop stitches and cause successive stitches to unwind and disengage. Significantly, pantyhose and other thin fiber fabrics are very susceptible to
- Nylon and other synthetic fibers used to make pantyhose can also be weakened and damaged by prolonged exposure to heat, sunlight (ultraviolet radiation), rain, or body
- pantyhose have been treated to resist runs by spraying the hosiery with
- the adhesive material would form visible patterns and be seen as a blemish on the hosiery, and the adhesive material drastically reduces the elasticity of the pantyhose.
- the present invention provides a process for treating pantyhose in a cryogenic processor to produce cryogenically treated pantyhose that have enhanced wearing qualities.
- a process for treating pantyhose in a cryogenic processor to produce cryogenically treated pantyhose that have enhanced wearing qualities.
- one embodiment of such a process can be broadly summarized by the following steps: reducing the temperature of the pantyhose to between
- the process described above includes the following steps:
- FIG. 1 is a flow diagram illustrating a representative embodiment of the cryogenic
- FIG. 2 is a flow diagram illustrating a representative embodiment of the heat
- FIG. 3 is a flow diagram illustrating another representative embodiment of the cryogenic process.
- FIG. 4 is a flow diagram illustrating another representative embodiment of the
- FIG. 5 is a flow diagram illustrating still another representative embodiment of the cryogenic process.
- FIG. 6 is a flow diagram illustrating still another representative embodiment of the
- the present invention provides a process for treating pantyhose in a cryogenic processor to produce cryogenically treated pantyhose that have enhanced wearing qualities that overcome some of the aforementioned deficiencies.
- the treatment processes are capable of enhancing the physical properties of the pantyhose if the treatment processes are performed under particular temperature treatment conditions.
- embodiments of the present invention provide for a process for
- enhancing the wearing qualities e.g., durability; lifetime; resistance to running,
- cryogenic treatment can be performed in a processor (i.e., cryogenic or deep cryogenic processors), hereinafter "cryogenic processor," while the heat tempering can be performed in an oven or other heating system.
- cryogenic treatment of materials includes a process of chilling the
- such materials is that one or more physical properties are enhanced (e.g., durability,
- material of interest such as, but not limited to, pre-treatment of the material; the rate of
- cryogenic processors are double walled, insulated containers partially
- cryogenic fluid e.g., liquid nitrogen or liquid helium
- cryogenic fluids have a low boiling point and,
- cryogenic processors include thermal and radiant barriers such as insulation and/or a high
- the vacuum space can also be filled with multiple
- FIG. 1 is a flow diagram that illustrates a representative cryogenic process 10 of the present invention.
- the pantyhose can be placed into the cryogenic processor directly or the pantyhose can be placed inside the cryogenic processor inside the original package or other appropriate package. As shown in block 12, the temperature of the pantyhose is
- the pantyhose can be reduced to a temperature between about -100 °C and
- the time period for reducing the temperature of the pantyhose can be any time period for reducing the temperature of the pantyhose.
- pantyhose about -80 °C and -240 °C for a 6 to 48 hour time period.
- period for holding the temperature of the pantyhose can range from about 10 to 36 hours, about 15 to 30 hours, or about 20 to 24 hours.
- the time period for allowing the pantyhose to increase in temperature can range from about 3 to 24 hours or about 12 to 24 hours.
- FIG. 2 is a flow diagram that illustrates a representative heat tempering process 20 that may be used in some embodiments. As shown in block 22, the temperature of the
- pantyhose is increased to about 40 °C to 80 °C over about a 30 to 120 minute time period.
- the temperature that the pantyhose can be increased to about 55 °C to 65
- the temperature of the pantyhose is held at about 40 °C to 80 °C for about a 30
- the pantyhose can be range from about 45 to about 65 minutes. Subsequently, as shown
- the temperature of the pantyhose is allowed to cool to about 25 °C over about
- to cool can range from about 70 to 90 minutes.
- FIG. 3 is a flow diagram that illustrates another representative cryogenic process
- the pantyhose can be placed into the cryogenic processor directly or the pantyhose can be placed inside the cryogenic processor inside the original
- pantyhose is reduced to between about -160 °C and -200 °C over about a 2 to 3 hour
- the temperature of the pantyhose is allowed to increase to a
- FIG. 4 is a flow diagram that illustrates another representative heat tempering
- temperature of the pantyhose is increased to about 55 to 65 °C over about a 40 to 60
- the temperature of the pantyhose is allowed to cool to about 25 °C over about a
- FIG. 5 is a flow diagram that illustrates another cryogenic process 50 that includes
- cryogenic fluid e.g., ethylene glycol dimethoxysulfate
- cryogenic processor is reduced to a temperature of about -194 °C.
- the temperature of the cryogenic processor is then held at about -194 °C for
- cryogenic processor is allowed to vent, which allows the
- cryogenic fluid to evaporate off at a rate dictated by the temperature of the room in which
- cryogenic processor is located, typically ambient room temperature, and the degree to
- the temperature of the room in which the cryogenic processor is located typically is a liquid crystal display
- the pantyhose are removed from the cryogenic processor and placed onto a
- pantyhose in the cryogenic processor, the pantyhose
- the rate of warmthing the pantyhose is dictated by
- the temperature of the room in which the pantyhose are removed to typically ambient room temperature. After the pantyhose have warmed to ambient temperature, the pantyhose are placed onto a drying rack until substantially dry.
- FIG. 6 is a flow diagram that illustrates another heat tempering process 60. After the pantyhose have warmed to ambient temperature, the pantyhose are removed from the cryogenic processor and, if applicable, are taken out of the package that the pantyhose
- pantyhose are placed into an oven to be
- the oven is warmed from ambient temperature to about 65 °C over about a 50
- the oven is held at about 65 °C for about 50 minutes. Thereafter the oven is allowed to cool to ambient temperature over a time period of about 80 minutes, as shown in block 66. After the pantyhose have cooled to
- pantyhose are placed back into the appropriate package.
- pantyhose can be pre-treated with an aqueous solution. After the pantyhose are pre-treated with an aqueous solution, the excess solution is
- pantyhose can be placed into the cryogenic processor directly or the pantyhose can be placed inside the cryogenic processor inside the original package or other appropriate package. After the pantyhose are placed in the cryogenic processor, the
- pantyhose can be treated in a manner consistent with cryogenic processes 10 and 30 and or heat tempering processes 20 and 40.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Socks And Pantyhose (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2002/039779 WO2004055496A1 (en) | 2001-07-16 | 2002-12-12 | Cryogenic processes for treating pantyhose |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1570251A1 EP1570251A1 (en) | 2005-09-07 |
EP1570251A4 true EP1570251A4 (en) | 2007-09-26 |
Family
ID=34374701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02794238A Withdrawn EP1570251A4 (en) | 2002-12-12 | 2002-12-12 | Cryogenic processes for treating pantyhose |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1570251A4 (en) |
JP (1) | JP2006509923A (en) |
CN (1) | CN1720436A (en) |
AU (1) | AU2002359685A1 (en) |
CA (1) | CA2509948A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891477A (en) * | 1971-09-09 | 1975-06-24 | Mangrove Enterprise Inc | Material treatment by cryogenic cooling |
DE3231092A1 (en) * | 1982-08-20 | 1984-02-23 | Linde Ag, 6200 Wiesbaden | Method and appliance for the processing of textile materials |
US5346725A (en) * | 1993-08-18 | 1994-09-13 | Targosz Eugene F | Treatment for nylon and other textiles |
US6332325B1 (en) * | 2000-08-17 | 2001-12-25 | Coldfire Technolgy, Inc. | Apparatus and method for strengthening articles of manufacture through cryogenic thermal cycling |
-
2002
- 2002-12-12 CN CNA028301536A patent/CN1720436A/en active Pending
- 2002-12-12 JP JP2004560247A patent/JP2006509923A/en active Pending
- 2002-12-12 AU AU2002359685A patent/AU2002359685A1/en not_active Abandoned
- 2002-12-12 EP EP02794238A patent/EP1570251A4/en not_active Withdrawn
- 2002-12-12 CA CA002509948A patent/CA2509948A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891477A (en) * | 1971-09-09 | 1975-06-24 | Mangrove Enterprise Inc | Material treatment by cryogenic cooling |
DE3231092A1 (en) * | 1982-08-20 | 1984-02-23 | Linde Ag, 6200 Wiesbaden | Method and appliance for the processing of textile materials |
US5346725A (en) * | 1993-08-18 | 1994-09-13 | Targosz Eugene F | Treatment for nylon and other textiles |
US6332325B1 (en) * | 2000-08-17 | 2001-12-25 | Coldfire Technolgy, Inc. | Apparatus and method for strengthening articles of manufacture through cryogenic thermal cycling |
Non-Patent Citations (1)
Title |
---|
See also references of WO2004055496A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2006509923A (en) | 2006-03-23 |
AU2002359685A1 (en) | 2004-07-09 |
CN1720436A (en) | 2006-01-11 |
CA2509948A1 (en) | 2004-07-01 |
EP1570251A1 (en) | 2005-09-07 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20050623 |
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
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DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20070829 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D06C 7/00 20060101ALI20070823BHEP Ipc: B29C 71/02 20060101ALI20070823BHEP Ipc: D06M 23/00 20060101AFI20070823BHEP |
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17Q | First examination report despatched |
Effective date: 20080603 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20080701 |