CA2737960A1 - Improved laces for use with footwear, sports equipment and the like - Google Patents
Improved laces for use with footwear, sports equipment and the like Download PDFInfo
- Publication number
- CA2737960A1 CA2737960A1 CA2737960A CA2737960A CA2737960A1 CA 2737960 A1 CA2737960 A1 CA 2737960A1 CA 2737960 A CA2737960 A CA 2737960A CA 2737960 A CA2737960 A CA 2737960A CA 2737960 A1 CA2737960 A1 CA 2737960A1
- Authority
- CA
- Canada
- Prior art keywords
- laces
- fibers
- lcp
- liquid crystal
- crystal polymer
- 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.)
- Abandoned
Links
- 239000000835 fiber Substances 0.000 claims abstract description 97
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 85
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 85
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 11
- 229920000508 Vectran Polymers 0.000 claims description 5
- 239000004979 Vectran Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000009941 weaving Methods 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 description 26
- 229920000271 Kevlar® Polymers 0.000 description 21
- 239000004761 kevlar Substances 0.000 description 21
- 238000012360 testing method Methods 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 9
- 229920006231 aramid fiber Polymers 0.000 description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 239000004760 aramid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000298697 Actinidia deliciosa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 polypropylene core Polymers 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C9/00—Laces; Laces in general for garments made of textiles, leather, or plastics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/37—Drawstring, laced-fastener, or separate essential cooperating device therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
Laces for footwear or sporting equipment comprised of yarns made from liquid crystal polymer (LCP) fibers. The laces may comprise 100% liquid crystal polymer, or may comprise between about 30% to 99% liquid crystal polymer fibers and a portion of other fibers. The laces may be solid braid construction.
Description
IMPROVED LACES FOR USE WITH FOOTWEAR, SPORTS EQUIPMENT AND THE LIKE
FIELD OF THE INVENTION
The present invention relates to improved laces for use with footwear, sports equipment and the like.
BACKGROUND OF THE INVENTION
Laces for footwear, such as shoes and boots, and for sports equipment, such as skates, rollerblades, boxing gloves and sports padding, are typically made from conventional fibers - cotton, nylon or polyester. One problem with these prior art laces is that they wear out as a result of abrasion and break frequently, usually at inopportune moments and thus render the associated footwear or sports equipment inoperable. Laces made of aramid fiber, such as that sold under the trademark KEVLAR by DuPont, have recently been made available, but testing and experience has shown that these do not last even as long as those made of the traditional materials. Accordingly, it is desirable to use laces that are significantly stronger and resistant to wear and are less prone to breakage than the laces of the prior art.
SUMMARY OF THE INVENTION
The above shortcomings may be addressed by providing, in accordance with the invention, laces for footwear or sporting equipment comprised of yarns made from liquid crystal polymer (LCP) fibers.
In another aspect, the present invention provides for the use LCP fiber in laces for footwear or sports equipment. In another aspect, the present invention provides methods of securing an item of footwear or sports equipment having eyelets therein for that purpose, the methods comprising providing laces comprised of LCP
fiber, and threading the laces through the eyelets in a configuration that enables said item to be secured. In yet another aspect, the present invention provides methods of manufacturing laces for footwear, sporting equipment and the like, comprising providing yarns comprised of liquid crystal polymer (LCP) fibers and weaving said yarns into a braid suitable for use in laces.
In preferred embodiments of the present invention, the laces comprise of 100% high-modulus multifilament yarn that is made from melt-spun liquid crystal polymer (LCP), also known as aromatic polyester, such as that sold under the trademark VECTRAN.
In alternative embodiments, of the present invention, the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers. For example, in such alternate embodiments, the amount of LCP fibers in the laces by percentage of total fibers may be in an amount from a minimum of 30%, 40%, 50%, 60%, or 70% to a maximum of 50%, 60%, 70%, 80%, 90% or 99%, wherein a range may, for example, be selected from any of the foregoing minimum values in combination with any of the foregoing maximum values, or any value lesser than, greater than or in between, for example, 30% to 99%, 60% to 99% or 80% to 99%.
LCP fiber is a high-modulus fiber, meaning that it is stiffer in tension and does not stretch as much as conventional fibers. It was determined that LCP fiber is very resistant to abrasion, more than most conventional fibers. LCP fiber is also much stronger than the conventional fibers. As well, the greater tensile stiffness and strength of LCP fiber allows pulling the laces tighter. This is especially advantageous in sporting equipment where generally greater force is required to pull the parts of the equipment together.
The increased strength and reduced abrasion of laces made from LCP fiber result in fewer breaks, increased reliability and longer lifetime of the footwear or sporting equipment.
The greater tensile stiffness of laces made from LCP fiber means that these laces will stretch less as a person walks, runs, skates, etc. with the associated footwear or sports equipment. Repeated stretching and relaxing of conventional laces causes the laces to move through the eyelets in the footwear or equipment and abrade against the eyelets as well as against other parts of the footwear or equipment, or against the laces themselves. This abrasion leads to deterioration and breakage of the laces. It was determined that the laces made from LCP fiber do not stretch as much and thus are subjected to less abrasion and will last longer than the prior art laces.
FIELD OF THE INVENTION
The present invention relates to improved laces for use with footwear, sports equipment and the like.
BACKGROUND OF THE INVENTION
Laces for footwear, such as shoes and boots, and for sports equipment, such as skates, rollerblades, boxing gloves and sports padding, are typically made from conventional fibers - cotton, nylon or polyester. One problem with these prior art laces is that they wear out as a result of abrasion and break frequently, usually at inopportune moments and thus render the associated footwear or sports equipment inoperable. Laces made of aramid fiber, such as that sold under the trademark KEVLAR by DuPont, have recently been made available, but testing and experience has shown that these do not last even as long as those made of the traditional materials. Accordingly, it is desirable to use laces that are significantly stronger and resistant to wear and are less prone to breakage than the laces of the prior art.
SUMMARY OF THE INVENTION
The above shortcomings may be addressed by providing, in accordance with the invention, laces for footwear or sporting equipment comprised of yarns made from liquid crystal polymer (LCP) fibers.
In another aspect, the present invention provides for the use LCP fiber in laces for footwear or sports equipment. In another aspect, the present invention provides methods of securing an item of footwear or sports equipment having eyelets therein for that purpose, the methods comprising providing laces comprised of LCP
fiber, and threading the laces through the eyelets in a configuration that enables said item to be secured. In yet another aspect, the present invention provides methods of manufacturing laces for footwear, sporting equipment and the like, comprising providing yarns comprised of liquid crystal polymer (LCP) fibers and weaving said yarns into a braid suitable for use in laces.
In preferred embodiments of the present invention, the laces comprise of 100% high-modulus multifilament yarn that is made from melt-spun liquid crystal polymer (LCP), also known as aromatic polyester, such as that sold under the trademark VECTRAN.
In alternative embodiments, of the present invention, the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers. For example, in such alternate embodiments, the amount of LCP fibers in the laces by percentage of total fibers may be in an amount from a minimum of 30%, 40%, 50%, 60%, or 70% to a maximum of 50%, 60%, 70%, 80%, 90% or 99%, wherein a range may, for example, be selected from any of the foregoing minimum values in combination with any of the foregoing maximum values, or any value lesser than, greater than or in between, for example, 30% to 99%, 60% to 99% or 80% to 99%.
LCP fiber is a high-modulus fiber, meaning that it is stiffer in tension and does not stretch as much as conventional fibers. It was determined that LCP fiber is very resistant to abrasion, more than most conventional fibers. LCP fiber is also much stronger than the conventional fibers. As well, the greater tensile stiffness and strength of LCP fiber allows pulling the laces tighter. This is especially advantageous in sporting equipment where generally greater force is required to pull the parts of the equipment together.
The increased strength and reduced abrasion of laces made from LCP fiber result in fewer breaks, increased reliability and longer lifetime of the footwear or sporting equipment.
The greater tensile stiffness of laces made from LCP fiber means that these laces will stretch less as a person walks, runs, skates, etc. with the associated footwear or sports equipment. Repeated stretching and relaxing of conventional laces causes the laces to move through the eyelets in the footwear or equipment and abrade against the eyelets as well as against other parts of the footwear or equipment, or against the laces themselves. This abrasion leads to deterioration and breakage of the laces. It was determined that the laces made from LCP fiber do not stretch as much and thus are subjected to less abrasion and will last longer than the prior art laces.
The greater tensile stiffness of laces made from LCP fiber also means that after the LCP fiber laces are tied at a desired tightness, they will remain tied at that tightness. In contrast, conventional fiber laces stretch and loosen, and thus require frequent retightening.
These and other aspects, features and embodiments are set forth within this application. The present invention comprises a variety of aspects, features and embodiments; such multiple aspects, features and embodiments can be combined and permuted in any desired manner.
DETAILED DESCRIPTION
The present invention provides laces for footwear or sporting equipment comprised of liquid crystal polymer (LCP) fibers. LCP fibers have much higher tension stiffness than conventional fibers used in laces. They are also significantly stronger than conventional fibers. An example of liquid crystal polymer (LCP), also known as aromatic polyester, is the product produced and sold under the trademark VECTRAN by Kuraray America.
It was surprisingly discovered in laboratory performance tests on laces made of LCP fiber and on commercially available laces made of polyester and aramid fibers (KEVLAR), that the LCP fiber laces lasted at least five times longer than the best polyester fiber laces, and about twenty times longer than the best aramid fiber laces.
The LCP fiber laces in the tests were solid braid construction. In solid braid construction, all of the strand carriers on the braider move in the same direction. A
strand moves under another, moves to the side in the interior of the rope, comes back to the surface, and goes under again. All of the strands on the surface appear aligned with the axis. Below the surface, the strands cross over to one side, always in the same direction.
In these tests, the laces were cycled back and forth through metal eyelets, similar to those used in boots, shoes, and sporting equipment, with an applied load of 2 lb (i.e. 907 g) weight until the laces failed. The average cycles to failure for the LCP fiber laces was 201,989 cycles, and these LCP laces significantly outperformed the polyester and aramid fiber laces.
The average cycles to failure for the best brand of polyester fiber laces was 37,802 cycles. Other brands of polyester fiber laces performed only to averages of 10,593 cycles and 8,432 cycles. The best brand of all-aramid fiber laces survived an average of 9,518 cycles. Another brand of all-aramid fiber laces survived to an average of only 4,466 cycles. Another brand had only several strands of aramid mixed with polyester fiber, and it survived 6,775 cycles. Yet another brand which was called aramid but actually had no aramid fiber and was made entirely of polyester fibers, survived an average of 7,380 cycles.
Table 1 summarizes information on the sources and characteristics of the tested boot laces.
Label used in Boot Lace Type or Description Material Weight, Charts herein Brand g/m LCP LCP fiber small black firm VECTRAN 4.7 round braid KEVLAR 1 gold KEVLAR flat braid, gold KEVLAR 6.4 KEVLAR 2 PROCARE Hiker large black hollo- Polyester sheath 6.3 KEVLAR lace braid sheath, Polyester core (no multicolor solid-braid KEVLAR) core KEVLAR 3 Black & gold flat braid, black with KEVLAR and polyester 4.3 KEVLAR gold stripe KEVLAR 4 BULL DOG small black round KEVLAR 2.9 KEVLAR braid Polyester polyester lace brown small round polyester 7.4 braid sheath COVINGTON COVINGTON brand brown and gold polyester sheath, cotton 6.8 lace round braid core KIWI KIWI brand lace black and brown polyester sheath, 4.5 round braid green polypropylene core core Leather leather lace brown, square cut leather 5.4 The construction of the shoe laces varied. Several, including the LCP fiber laces, were solid braid. Several were hollow braid sheath, with or without core.
Several were flat braid. The PROCARE KEVLAR lace comprised a polyester hollow-braid sheath and a solid-braid multi-color polyester core. There was actually no KEVLAR yarn in this product. The gold KEVLAR was a flat-braid construction of KEVLAR strands. The black and gold KEVLAR was a flat-braid construction comprised of two gold KEVLAR strands and many black polyester strands.
The tests were conducted on a modification of the 4-station yarn-on-yarn abrasion test machine. That test machine is usually used to conduct yarn-on-yarn abrasion tests in accordance with industry standards. The modified test machine was provided with 1/4 inch (6.35 mm) brass grommets, similar to those used in boots, inserted in holes drilled through aluminum angle bars. These bars were mounted on the four stations of the test machine. Each of the lace specimens was run through the brass grommet, and each lace specimen was pulled back and forth through the grommet under an applied load of 2 lb (907g) with a stroke of 2 inches (50.8 mm) and at a rate of one cycle per second. Cycles for each specimen were counted by counters that shut off automatically when the lace failed or when it became so damaged that it would be unusable.
With reference to the figures, Figure 1 is a chart of the performance test results of the LCP fiber laces of the present invention against the four laces that were comprised of KEVLAR fibers (except in the case identified above which actually contained no aramid fibers). Figure 2 is a chart of the performance test results of the LCP fiber laces of the present invention against four other laces comprised of conventional fibers.
These performance tests demonstrated that, surprisingly, the LCP fiber laces have a service life that is at least five times longer than the best polyester fiber laces and about twenty times longer than the best aramid fiber laces.
In these tests, the principal cause of wear and failure of the laces was determined to be internal abrasion resulting from fibers rubbing against each other when the lace flexed as it moved around the radius of the metal eyelet. Both polyester and LCP fiber yarns are very resistant to this type of internal wear. Aramid is much less resistant to this type of wear.
Each of the laces in these tests were subjected to the same 2 inch (50.8 mm) stroke around the radius of the metal eyelet. It was discovered that because LCP
fiber laces exhibit virtually no stretch when compared to polyester and other conventional fiber laces, they would not move as much around the radius of the metal grommet, and they would suffer even less internal abrasion. Thus, when used in footware and sports equipment, the service life performance of the LCP fiber laces is expected to be even better relative to the polyester fiber laces than the five-times ratio demonstrated in these tests.
In the preferred embodiments of this invention, the laces are comprised 100%
high-performance multifilament yarn that is melt spun from liquid crystal polymer (LCP), also known as aromatic polyester, such as that sold under the trademark VECTRAN.
In other embodiments of the present invention, the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers. For example, in such alternate embodiments, the amount of LCP fibers in the laces by percentage of total fibers may be in an amount from a minimum of 30%, 40%, 50%, 60%, or 70% to a maximum of 50%, 60%, 70%, 80%, 90% or 99%, wherein a range may, for example, be selected from any of the foregoing minimum values in combination with any of the foregoing maximum values, or any value lesser than, greater than or in between, for example, 30% to 99%, 60% to 99% or 80% to 99%.
These and other aspects, features and embodiments are set forth within this application. The present invention comprises a variety of aspects, features and embodiments; such multiple aspects, features and embodiments can be combined and permuted in any desired manner.
DETAILED DESCRIPTION
The present invention provides laces for footwear or sporting equipment comprised of liquid crystal polymer (LCP) fibers. LCP fibers have much higher tension stiffness than conventional fibers used in laces. They are also significantly stronger than conventional fibers. An example of liquid crystal polymer (LCP), also known as aromatic polyester, is the product produced and sold under the trademark VECTRAN by Kuraray America.
It was surprisingly discovered in laboratory performance tests on laces made of LCP fiber and on commercially available laces made of polyester and aramid fibers (KEVLAR), that the LCP fiber laces lasted at least five times longer than the best polyester fiber laces, and about twenty times longer than the best aramid fiber laces.
The LCP fiber laces in the tests were solid braid construction. In solid braid construction, all of the strand carriers on the braider move in the same direction. A
strand moves under another, moves to the side in the interior of the rope, comes back to the surface, and goes under again. All of the strands on the surface appear aligned with the axis. Below the surface, the strands cross over to one side, always in the same direction.
In these tests, the laces were cycled back and forth through metal eyelets, similar to those used in boots, shoes, and sporting equipment, with an applied load of 2 lb (i.e. 907 g) weight until the laces failed. The average cycles to failure for the LCP fiber laces was 201,989 cycles, and these LCP laces significantly outperformed the polyester and aramid fiber laces.
The average cycles to failure for the best brand of polyester fiber laces was 37,802 cycles. Other brands of polyester fiber laces performed only to averages of 10,593 cycles and 8,432 cycles. The best brand of all-aramid fiber laces survived an average of 9,518 cycles. Another brand of all-aramid fiber laces survived to an average of only 4,466 cycles. Another brand had only several strands of aramid mixed with polyester fiber, and it survived 6,775 cycles. Yet another brand which was called aramid but actually had no aramid fiber and was made entirely of polyester fibers, survived an average of 7,380 cycles.
Table 1 summarizes information on the sources and characteristics of the tested boot laces.
Label used in Boot Lace Type or Description Material Weight, Charts herein Brand g/m LCP LCP fiber small black firm VECTRAN 4.7 round braid KEVLAR 1 gold KEVLAR flat braid, gold KEVLAR 6.4 KEVLAR 2 PROCARE Hiker large black hollo- Polyester sheath 6.3 KEVLAR lace braid sheath, Polyester core (no multicolor solid-braid KEVLAR) core KEVLAR 3 Black & gold flat braid, black with KEVLAR and polyester 4.3 KEVLAR gold stripe KEVLAR 4 BULL DOG small black round KEVLAR 2.9 KEVLAR braid Polyester polyester lace brown small round polyester 7.4 braid sheath COVINGTON COVINGTON brand brown and gold polyester sheath, cotton 6.8 lace round braid core KIWI KIWI brand lace black and brown polyester sheath, 4.5 round braid green polypropylene core core Leather leather lace brown, square cut leather 5.4 The construction of the shoe laces varied. Several, including the LCP fiber laces, were solid braid. Several were hollow braid sheath, with or without core.
Several were flat braid. The PROCARE KEVLAR lace comprised a polyester hollow-braid sheath and a solid-braid multi-color polyester core. There was actually no KEVLAR yarn in this product. The gold KEVLAR was a flat-braid construction of KEVLAR strands. The black and gold KEVLAR was a flat-braid construction comprised of two gold KEVLAR strands and many black polyester strands.
The tests were conducted on a modification of the 4-station yarn-on-yarn abrasion test machine. That test machine is usually used to conduct yarn-on-yarn abrasion tests in accordance with industry standards. The modified test machine was provided with 1/4 inch (6.35 mm) brass grommets, similar to those used in boots, inserted in holes drilled through aluminum angle bars. These bars were mounted on the four stations of the test machine. Each of the lace specimens was run through the brass grommet, and each lace specimen was pulled back and forth through the grommet under an applied load of 2 lb (907g) with a stroke of 2 inches (50.8 mm) and at a rate of one cycle per second. Cycles for each specimen were counted by counters that shut off automatically when the lace failed or when it became so damaged that it would be unusable.
With reference to the figures, Figure 1 is a chart of the performance test results of the LCP fiber laces of the present invention against the four laces that were comprised of KEVLAR fibers (except in the case identified above which actually contained no aramid fibers). Figure 2 is a chart of the performance test results of the LCP fiber laces of the present invention against four other laces comprised of conventional fibers.
These performance tests demonstrated that, surprisingly, the LCP fiber laces have a service life that is at least five times longer than the best polyester fiber laces and about twenty times longer than the best aramid fiber laces.
In these tests, the principal cause of wear and failure of the laces was determined to be internal abrasion resulting from fibers rubbing against each other when the lace flexed as it moved around the radius of the metal eyelet. Both polyester and LCP fiber yarns are very resistant to this type of internal wear. Aramid is much less resistant to this type of wear.
Each of the laces in these tests were subjected to the same 2 inch (50.8 mm) stroke around the radius of the metal eyelet. It was discovered that because LCP
fiber laces exhibit virtually no stretch when compared to polyester and other conventional fiber laces, they would not move as much around the radius of the metal grommet, and they would suffer even less internal abrasion. Thus, when used in footware and sports equipment, the service life performance of the LCP fiber laces is expected to be even better relative to the polyester fiber laces than the five-times ratio demonstrated in these tests.
In the preferred embodiments of this invention, the laces are comprised 100%
high-performance multifilament yarn that is melt spun from liquid crystal polymer (LCP), also known as aromatic polyester, such as that sold under the trademark VECTRAN.
In other embodiments of the present invention, the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers. For example, in such alternate embodiments, the amount of LCP fibers in the laces by percentage of total fibers may be in an amount from a minimum of 30%, 40%, 50%, 60%, or 70% to a maximum of 50%, 60%, 70%, 80%, 90% or 99%, wherein a range may, for example, be selected from any of the foregoing minimum values in combination with any of the foregoing maximum values, or any value lesser than, greater than or in between, for example, 30% to 99%, 60% to 99% or 80% to 99%.
Claims (17)
1. Laces for footwear, sporting equipment and the like, the laces comprising high modulus fibers selected from the group consisting of liquid crystal polymer (LCP).
2. The laces as in claim 1 wherein the laces are comprised of 100% liquid crystal polymer (LCP).
3. The laces as in claim 1 wherein the laces are comprised of 100% high-performance multifilament yarn that is melt spun from liquid crystal polymer, such as that sold under the trademark VECTRAN.
4. The laces as in claim 2 wherein the laces are solid braid construction.
5. The laces as in claim 3 wherein the laces are solid braid construction.
6. The laces as in claim 1 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 30% to 99%.
7. The laces as in claim 1 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 60% to 99%.
8. The laces as in claim 1 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 80% to 99%.
9. The use of liquid crystal polymer (LCP) fibers in laces for footwear, sporting equipment and the like.
10. A method of securing an item of footwear or sports equipment having eyelets therein for that purpose, the method comprising providing laces comprised of LCP fiber, and threading said laces through the eyelets in a configuration that enables said item to be secured.
11. The method of claim 10 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 30% to 99%.
12. The method of claim 10 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 60% to 99%.
13. The method of claim 10 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 80% to 99%.
14. A method of manufacturing laces for footwear, sporting equipment and the like, comprising providing yarns comprised of liquid crystal polymer (LCP) fibers and weaving said yarns into a braid suitable for use in laces.
15. The method of claim 14 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 30% to 99%.
16. The method of claim 14 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 60% to 99%.
17. The method of claim 14 wherein the laces comprise partially of liquid crystal polymer (LCP) fibers and partially of other fibers, and wherein the amount of LCP fibers in the laces by percentage of total fibers is between about 80% to 99%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9853308P | 2008-09-19 | 2008-09-19 | |
| US61/098,533 | 2008-09-19 | ||
| PCT/CA2009/001313 WO2010031178A1 (en) | 2008-09-19 | 2009-09-21 | Improved laces for use with footwear, sports equipment and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2737960A1 true CA2737960A1 (en) | 2010-03-25 |
Family
ID=42039049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2737960A Abandoned CA2737960A1 (en) | 2008-09-19 | 2009-09-21 | Improved laces for use with footwear, sports equipment and the like |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110239420A1 (en) |
| CA (1) | CA2737960A1 (en) |
| WO (1) | WO2010031178A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8365646B2 (en) * | 2008-07-18 | 2013-02-05 | Fields Thomas W | Securing device |
| US9056656B2 (en) | 2008-07-18 | 2015-06-16 | Thomas W. Fields | Mooring loop |
| KR101604268B1 (en) * | 2012-07-26 | 2016-03-17 | 코오롱인더스트리 주식회사 | Shoelace with excellent tensile strength |
| US11597476B2 (en) | 2020-08-25 | 2023-03-07 | Thomas W. Fields | Controlled failure point for a rope or mooring loop and method of use thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0030417B2 (en) * | 1979-11-30 | 1994-03-30 | Imperial Chemical Industries Plc | Compositions of melt-processable polymers having improved processibility, and method of processing |
| US4858282A (en) * | 1988-07-05 | 1989-08-22 | Dupont Jr Charles E | Braided metal-plastic shoe lace |
| US5272796A (en) * | 1992-05-18 | 1993-12-28 | K-Swiss, Inc. | Slip resistant shoe lace and method for manufacturing same |
| US5336464A (en) * | 1992-11-20 | 1994-08-09 | Hoechst Celanese Corporation | Extrusion blow molding of thermotropic liquid crystalline polymers |
| US6228488B1 (en) * | 1998-05-22 | 2001-05-08 | Alliedsignal Inc. | Process for making load limiting yarn |
| DE20013472U1 (en) * | 2000-08-04 | 2001-12-13 | Puma Ag Rudolf Dassler Sport, 91074 Herzogenaurach | Shoe, in particular sports shoe |
| US6599319B2 (en) * | 2001-12-14 | 2003-07-29 | Celanese Advanced Materials, Inc. | Prosthetic ligament |
| US20060064855A1 (en) * | 2002-01-03 | 2006-03-30 | Wilk Kelly A | Woven oval shoe laces and method of manufacture |
| US6945153B2 (en) * | 2002-10-15 | 2005-09-20 | Celanese Advanced Materials, Inc. | Rope for heavy lifting applications |
| US7557154B2 (en) * | 2004-12-23 | 2009-07-07 | Sabic Innovative Plastics Ip B.V. | Polymer compositions, method of manufacture, and articles formed therefrom |
| US8215033B2 (en) * | 2009-04-16 | 2012-07-10 | Nike, Inc. | Article of footwear for snowboarding |
| US7810221B1 (en) * | 2009-05-28 | 2010-10-12 | Kali Damon K | Knot keeper |
-
2009
- 2009-09-21 US US13/119,943 patent/US20110239420A1/en not_active Abandoned
- 2009-09-21 CA CA2737960A patent/CA2737960A1/en not_active Abandoned
- 2009-09-21 WO PCT/CA2009/001313 patent/WO2010031178A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US20110239420A1 (en) | 2011-10-06 |
| WO2010031178A1 (en) | 2010-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101147011B (en) | Endless belt with improved load carrying cord | |
| CN207341288U (en) | Article with knitting component and the vamp for article of footwear | |
| RU2222244C2 (en) | Puncture-resistant composite | |
| CN106283307B (en) | Composite tyre cord and its manufacture method | |
| US10435822B2 (en) | Resilient yarn and fabric having the same | |
| US20110239420A1 (en) | Improved laces for use with footwear, sports equipment and the like | |
| US7849666B2 (en) | Core-sheath rope | |
| CN102202915A (en) | Tire side-wall cut resistant fabric, tire containing said fabric, and processes for making same | |
| TW201020131A (en) | Non-load bearing cut resistant tire side-wall component, tire containing said component, and processes for making same | |
| CN110998000A (en) | Knitted component having surface regions formed with high tenacity yarns | |
| JPH048948A (en) | Toothed belt | |
| US10273609B2 (en) | Paper guide rope | |
| TW201022057A (en) | Non-load bearing cut resistant tire side-wall component comprising knitted textile fabric, tire containing said component, and processes for making same | |
| US12077908B2 (en) | Ropes with enhanced CBOS fatigue life | |
| KR100610550B1 (en) | Toothed belt | |
| JP4851486B2 (en) | Yarn and fishing line made of the yarn | |
| JP3835616B2 (en) | Polyamide multifilament fabric and process for producing the same | |
| RU2719962C2 (en) | High-modulus single twisted threads from nylon 6.6 | |
| JP2002054041A (en) | Fused yarn of high-tenacity fiber | |
| US20060046053A1 (en) | Serving for archery bowstring | |
| JPS63196726A (en) | Composite fiber material | |
| US2992584A (en) | Tie cord | |
| CN222631940U (en) | Strong elastic rope | |
| JPH0921044A (en) | Braid | |
| FI125549B (en) | Shoelaces for sports shoes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |