Knitted textile, method of forming the same, and articles of apparel, such as articles of footwear, incorporating the knitted textile
阅读说明:本技术 针织纺织品和其形成方法以及包含针织纺织品的服装物品如鞋类物品 (Knitted textile, method of forming the same, and articles of apparel, such as articles of footwear, incorporating the knitted textile ) 是由 约翰·S·麦吉尔伯特 威廉·C·麦克法兰德 于 2018-03-23 设计创作,主要内容包括:针织纺织品(2)具有与第二层(6)一体地形成的第一层(4),第一层(4)包括具有热塑性组合物的第一纱线(12),第二层(6)包括第二纱线(14),第一纱线(12)形成针织图案(16)的阵列,该针织图案(16)的阵列界定穿过第一层(4)到第二层(6)的空隙(8)。第一层(4)可以被热处理以形成膜(24)。第一层(4)的处理可以改变针织纺织品(2)的区域拉伸性质和方向拉伸性质。在处理之前和/或之后,针织纺织品(2)在第一轴线(32)和/或第二轴线(30)中的泊松比率可以大于或等于零。公开了并入针织纺织品(2)的服装物品,服装物品包括鞋类物品(26)和衣服;以及形成针织纺织品(2)和物品的方法。(A knitted textile (2) has a first layer (4) integrally formed with a second layer (6), the first layer (4) comprising first yarns (12) having a thermoplastic composition, the second layer (6) comprising second yarns (14), the first yarns (12) forming an array of knitting patterns (16), the array of knitting patterns (16) defining voids (8) through the first layer (4) to the second layer (6). The first layer (4) may be heat treated to form a film (24). Treatment of the first layer (4) can alter the regional and directional stretch properties of the knitted textile (2). The poisson's ratio of the knitted textile (2) in the first axis (32) and/or the second axis (30) may be greater than or equal to zero before and/or after treatment. An article of apparel incorporating a knitted textile (2) is disclosed, the article of apparel including an article of footwear (26) and a garment; and methods of forming knitted textiles (2) and articles.)
1. A knitted textile having a knitted structure, the knitted structure comprising:
a first layer of the knit structure, the first layer comprising first yarns comprising a first thermoplastic composition having a first melting temperature, the first yarns forming an array of knit patterns in the first layer, the array of knit patterns defining voids in the first layer;
a second layer of the knit structure on an opposite side of the knit textile from the first layer and integrally formed with the first layer, the second layer including a second yarn,
the first yarn and the second yarn form an interlocking knit stitch;
the void passing through the first layer and to the second layer, wherein a portion of the yarn of the second layer is exposed through the void in the first layer;
the second yarn is formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first melting temperature being lower than the lowest of the second melting temperature and the second decomposition temperature.
2. The knitted textile of claim 1, wherein the first melting temperature is at least 5 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
3. The knitted textile of claim 1 or 2, wherein at least 90% of the first yarns are formed from the thermoplastic composition.
4. The knitted textile of any of claims 1-3, wherein the thermoplastic composition is selected from the group consisting of: thermoplastic polyurethanes, polyamides, polyesters, polypropylenes, and polyolefins.
5. The knitted textile of any of claims 1-4, wherein heating the textile above the first melting temperature and below the second melting temperature causes at least partial melting of the first yarns.
6. The knitted textile of any of claims 1-5, wherein the knitted textile comprises a first axis and a second axis, the first axis being perpendicular to the second axis, wherein an area of the void increases to expose more of the second layer when tension in the first axis and/or the second axis is applied to the knitted structure.
7. The knitted textile of any of claims 1-6, wherein the array of knitting patterns is continuous and interconnected in the first layer.
8. The knitted textile of any of claims 1-7, wherein the knitted structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
9. The knitted textile of claim 8, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis, the second axis, or both.
10. The knitted textile of claim 9, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
11. A knitted textile having a knitted structure, the knitted structure comprising:
a first layer of the knit structure, the first layer including a first yarn comprising a first thermoplastic composition,
the first layer having a first surface comprising a film comprising the first yarns in remelted form, the film forming an array of fused patterns on the first surface, the array of fused patterns defining voids in the first surface,
a second layer of the knitted structure on an opposite side of the knitted textile from the first layer and integrally formed with the first layer, the second layer comprising a second yarn formed from a second composition;
the first and second yarns form interlocking knit stitches in the second layer and/or in the first layer beneath the film;
the void passes through the first layer and to the second layer, wherein a portion of the yarn of the second layer is exposed through the void in the first layer.
12. The knitted textile of claim 10, wherein the first thermoplastic composition has a first melting temperature and the second composition has a second melting temperature or a second decomposition temperature or both, the first melting temperature being lower than the lowest of the second melting temperature and the second decomposition temperature.
13. The knitted textile of claim 12, wherein the first melting temperature is at least 5 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
14. The knitted textile of any of claims 11-13, wherein at least 90% of the first yarns are formed from the thermoplastic composition.
15. The knitted textile of any of claims 11-14, wherein when tension in the first or second axis is applied to the knitted structure, the area of the void increases to expose more of the second layer.
16. The knitted textile of any of claims 11-15, wherein the array of fused patterns is discontinuous in the first layer.
17. The knitted textile of any of claims 11-16, wherein the knitted structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
18. The knitted textile of claim 17, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis, the second axis, or both.
19. The knitted textile of claim 18, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
20. An article of apparel comprising the knitted textile of any of claims 1-19.
21. The article of apparel recited in claim 20, wherein the article of apparel is an article of clothing or footwear.
22. The article of apparel recited in claim 21, wherein the article of apparel is an article of footwear.
23. Sports equipment comprising the knitted textile of any one of claims 1-19.
24. An article of footwear including an upper and a sole structure, the upper including a knit textile having a knit structure, the knit structure comprising:
a first layer of the knit structure, the first layer including a first yarn, the first yarn including a first thermoplastic composition,
the first layer having a first surface comprising a film comprising the first yarns in remelted form, the film forming an array of fused patterns on the first surface, the array of fused patterns defining voids in the first surface,
a second layer of the knitted structure on an opposite side of the knitted textile from the first layer and integrally formed with the first layer, the second layer comprising a second yarn formed from a second composition;
the first and second yarns form interlocking knit stitches in the second layer and/or in the first layer beneath the film;
the void passes through the first layer and to the second layer, wherein a portion of the yarn of the second layer is exposed through the void in the first layer.
25. The article of footwear recited in claim 24, wherein the knit structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
26. The article of footwear of claim 25, wherein the first axis is oriented on the article of footwear from a medial side to a lateral side, and the second axis is oriented on the article of footwear from a toe to a heel.
27. The article of footwear of claim 25, wherein a poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis, the second axis, or both.
28. The article of footwear of claim 27, wherein a poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
29. The article of footwear of any of claims 24-28, wherein the first layer is disposed on an exterior surface of the article of footwear.
30. A method of forming a knitted textile, the method comprising:
a knitted textile structure, the knitted textile structure comprising:
a first layer comprising first yarns comprising a first thermoplastic composition having a first melting temperature, and
a second layer on an opposite side of the knitted textile from the first layer and integrally formed with the first layer, the second layer comprising a second yarn formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn and the second yarn forming an interlocking knit stitch, and
forming an array of knitting patterns with the first yarn in the first layer, the array of knitting patterns defining voids in the first layer that pass through the first layer and to the second layer, wherein a portion of the yarn of the second layer is exposed through the voids in the first layer.
31. The method of claim 30, wherein the first melting temperature is lower than the lowest of the second melting temperature and the second decomposition temperature.
32. The method of claim 31, wherein the first melting temperature is at least 5 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
33. The method of any of claims 30-32, further comprising heating the first layer to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition.
34. The method of claim 33, wherein the melted first thermoplastic composition forms a film on the first layer.
35. The method of any of claims 30-34, wherein the knit structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
36. The method of claim 35, wherein the poisson's ratio of the knitted structure is greater than or equal to zero when measured in the first axis, the second axis, or both.
37. The method of claim 36, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
38. A method of manufacturing a knitted textile, the method comprising:
providing a knit structure comprising:
a first layer comprising first yarns comprising a first thermoplastic composition having a first melting temperature, and
a second layer on an opposite side of the knitted textile from the first layer and integrally formed with the first layer, the second layer comprising a second yarn formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn and the second yarn forming interlocking knit stitches,
the first layer comprising an array of knitting patterns formed by the first yarns defining voids in the first layer that pass through the first layer and to the second layer, wherein a portion of the yarns of the second layer are exposed through the voids in the first layer,
the first melting temperature is lower than the lowest temperature of the second melting temperature and the second decomposition temperature; and
heating the first layer to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition.
39. The method of claim 38, wherein the melted first thermoplastic composition forms a film on the first layer.
40. The method of claim 38 or 39, wherein the first melting temperature is at least 5 degrees Celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
41. The method of claim 38 or 39, wherein the knit structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
42. The method of claim 41, wherein the poisson's ratio of the knitted structure is greater than or equal to zero when measured in the first axis, the second axis, or both.
43. The method of claim 42, wherein the poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
44. The method of claim 43, further comprising incorporating the knitted textile into an article of apparel.
45. The method of claim 38 or 39, further comprising incorporating the knit textile into an upper for an article of footwear.
46. The method of claim 38, further comprising attaching the upper to an outsole to form an article of footwear.
47. The method of claim 44, wherein the article of apparel is an article of footwear.
48. The method of claim 47, wherein the article of apparel is a garment.
49. A method of manufacturing an article of footwear, the method comprising:
providing a knit structure comprising:
a first layer comprising first yarns comprising a first thermoplastic composition having a first melting temperature, and
a second layer on an opposite side of the knitted textile from the first layer and integrally formed with the first layer, the second layer comprising a second yarn formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn and the second yarn forming interlocking knit stitches,
the first layer comprising an array of knitting patterns formed by the first yarns defining voids in the first layer that pass through the first layer and to the second layer, wherein a portion of the yarns of the second layer are exposed through the voids in the first layer,
the first melting temperature is lower than the lowest temperature of the second melting temperature and the second decomposition temperature;
forming the knit structure into an upper;
heating a portion of the first layer to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition and form a film on the first layer; and
attaching the upper to an outsole to form an article of footwear.
50. The method of claim 49, wherein the first melting temperature is at least 5 degrees Celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
51. The method according to claim 49 or 50, wherein the knitted structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
52. The article of footwear of claim 51, wherein the first axis is oriented on the article of footwear from a medial side to a lateral side, and the second axis is oriented on the article of footwear from a toe to a heel.
53. The article of footwear of claim 51, wherein a Poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis, the second axis, or both.
54. The article of footwear of claim 53, wherein a Poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
55. The article of footwear of any of claims 49, 50, 52, 53, and 54, wherein the first layer is disposed on an exterior surface of the article of footwear.
56. A method of forming an article of footwear, the method comprising:
providing a knit structure comprising:
a first layer comprising first yarns comprising a first thermoplastic composition, the first layer having a first surface comprising a film comprising the first yarns in remelted form, the film forming an array of fused patterns on the first surface, the array of fused patterns defining voids in the first surface,
a second layer on an opposite side of the knitted structure from the first layer and integrally formed with the first layer, the second layer including a second yarn formed from a second composition;
the first and second yarns form an interlocking knit stitch in the second layer and/or in the first layer beneath the film, the void passing through the first layer and to the second layer, wherein a portion of the yarns of the second layer are exposed through the void in the first layer;
forming the knit structure into an upper; and
attaching the upper to an outsole to form an article of footwear.
57. The method according to claim 56, wherein the knit structure has a first axis and a second axis, the first axis being perpendicular to the second axis.
58. The article of footwear according to claim 57, wherein the first axis is oriented on the article of footwear from a medial side to a lateral side, and the second axis is oriented on the article of footwear from a toe to a heel.
59. The article of footwear of claim 57, wherein the Poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis, the second axis, or both.
60. The article of footwear of claim 57, wherein a Poisson's ratio of the knitted textile is greater than or equal to zero when measured in the first axis and in the second axis.
61. The article of footwear of any of claims 59-60, wherein the first layer is disposed on an exterior surface of the article of footwear.
Technical Field
The present disclosure relates to textiles, in particular knitted textiles (knit textile) having two or more integrally formed knitted layers, a first layer comprising yarns comprising a first thermoplastic composition and a second layer comprising yarns having a second composition; and articles of apparel (apparel) and athletic equipment (sport equipment) incorporating the knitted textile. Methods of making knitted textiles, articles of apparel, and athletic equipment are also disclosed.
Description of the related Art
Modern textile manufacturing and materials make it possible to produce textiles with improved fit and comfort. Significant improvements in knitting techniques, such as those disclosed in WO2014/081680, allow for the formation of a single integrally formed knitted textile having different properties in different regions of the knitted textile while reducing material waste. Using this technique, it is possible to reduce the number of material elements required to manufacture textiles and articles of apparel incorporating such textiles, while also reducing labor costs and manufacturing time.
The use of yarns having different material compositions also allows for different regional behaviors in the integrally formed knitted textile. For example, a knitted textile may have multiple layers, each incorporating a different yarn construction and knitting type. Thus, these properties can be exploited to introduce variations in the behavior of the finished product.
Many articles of apparel are designed to fit closely to the body. In view of the diversity of body types and shapes, it is challenging to design a garment that takes into account regional contour (regional contour) and interspecies differences. In addition, certain areas of the article of footwear, such as the toe and heel areas, require increased wear resistance, while other areas, such as the waist area of a shirt or the tongue area of the article of footwear, require increased flexibility. The "one size fits all" strategy may allow many users to experience excessive tightening and discomfort in certain areas and excessive wear or slack in other areas. Similarly, while a material such as cotton may be comfortable against the skin, it may not be suitable for abrasion resistance and tends to retain too much moisture, which makes it undesirable in many applications.
It would be desirable to provide improved integrally formed knit textiles and articles of apparel with specifically tailored regional and directional properties (zonal and directional properties) that allow for enhanced stretch properties, for example, in desired regions and directions, and improved wear resistance or comfort in other regions, while reducing cost and material waste.
Brief summary
In one aspect, a knitted textile having a knitted structure including a first layer having a first yarn having a first thermoplastic composition and a second layer opposite and integrally formed with the first layer, the second layer including a second yarn formed from a second composition is disclosed.
In some embodiments, the first yarn forms an array of knitting patterns in the first layer, the array of knitting patterns defining voids in the first layer; the second layer has a second yarn, and the void passes through the first layer and to the second layer.
In some embodiments, the first layer has a first surface comprising a film comprising first yarns in remelted form (refluwedform), the film forming an array of fused patterns (fused patterns) on the first surface, the array of fused patterns defining voids in the first surface, the voids passing through the first layer and reaching the second layer.
In one aspect, an article of footwear having an upper with a knit textile having a knit structure and a sole structure is disclosed.
In some embodiments, a knit structure has a first layer including first yarns having a first thermoplastic composition, the first layer having a first surface including a film, the film including the first yarns in remelted form, the film forming an array of fused patterns on the first surface, the array of fused patterns defining voids in the first surface, a second layer opposite the first layer and formed integrally with the first layer, the second layer having second yarns formed from a second composition; the void passes through the first layer and reaches the second layer.
In one aspect, a method of forming a knitted textile is disclosed.
In some embodiments, the method includes knitting a knit structure having a first layer with a first yarn having a first thermoplastic composition having a first melting temperature and a second layer opposite and integrally formed with the first layer, the second layer including a second yarn formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn and the second yarn forming an interlocking knit stitch; and forming an array of knitting patterns in the first layer having the first yarn, the array of knitting patterns defining voids in the first layer, the voids passing through the first layer to the second layer, wherein a portion of the yarn of the second layer is exposed through the voids in the first layer.
In one aspect, a method of manufacturing a knitted textile is disclosed.
In some embodiments, the method includes providing a knit structure having a first layer having a first yarn having a first thermoplastic composition and a second layer opposite and integrally formed with the first layer having a second yarn having a second composition, the first layer comprising an array of knit patterns formed from the first yarn, the array of knit patterns defining voids in the first layer, the voids passing through the first layer and reaching the second layer, wherein a portion of the yarns of the second layer are exposed through the voids in the first layer; and heating the first layer to at least partially melt the first thermoplastic composition.
In some embodiments, the first thermoplastic composition has a first melting temperature and the second composition has a second melting temperature or a second decomposition temperature or both.
In an embodiment, the first melting temperature is at least 5 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 10 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 15 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 20 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
In certain embodiments, the method further comprises heating the first layer to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition.
In one aspect, a method of manufacturing an article of footwear is disclosed.
In some embodiments, the method includes providing a knit structure having a first layer including a first yarn including a first thermoplastic composition having a first melting temperature and a second layer on an opposite side of the knit textile from the first layer and integrally formed with the first layer. The second layer includes a second yarn formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn and the second yarn forming an interlocking knit stitch. The first layer includes an array of knit patterns formed from the first yarn, the array of knit patterns defining voids in the first layer. The void passes through the first layer and to the second layer, wherein a portion of the yarns of the second layer are exposed through the void in the first layer. The first melting temperature is lower than the lowest temperature of the second melting temperature and the second decomposition temperature. The method also includes forming the knitted structure into an upper, heating a portion of the first layer to a temperature above the first melting temperature and below a lowest temperature of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition and form a film on the first layer. The method also includes attaching the upper to an outsole to form an article of footwear.
In an embodiment, the first melting temperature is at least 5 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 10 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 15 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature. In an embodiment, the first melting temperature is at least 20 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
In some embodiments, the method includes providing a knit structure having a first layer and a second layer, the first layer including first yarns, the first yarns including a first thermoplastic composition, the first layer having a first surface including a film, the film including the first yarns in remelted form, the film forming an array of fused patterns on the first surface, the array of fused patterns defining voids in the first surface, the second layer being located on an opposite side of the knit structure from the first layer and integrally formed with the first layer, the second layer including second yarns formed from a second composition; the first and second yarns form interlocking knit stitches in the second layer and/or in the first layer beneath the film, the voids passing through the first layer and reaching the second layer, wherein a portion of the yarns of the second layer are exposed through the voids in the first layer; forming the knit structure into an upper; and attaching the upper to the outsole to form an article of footwear.
In some embodiments, the first layer is disposed on an exterior surface of the article of footwear.
Brief description of several views of the drawings
The following drawings are provided to illustrate various embodiments of the present disclosure and are not intended to limit the scope of the invention. The components in the drawings are not necessarily to scale.
Fig. 1A, 1B, and 1C illustrate various knitting patterns used in embodiments of the knitted textiles herein.
Fig. 2A illustrates an unstretched knitted textile according to certain embodiments herein.
Fig. 2B illustrates a stretched knitted textile according to certain embodiments herein.
Fig. 3 illustrates a perspective view of a medial side of an article of footwear incorporating a knitted textile upper.
Fig. 4 illustrates a perspective view of a lateral side of an article of footwear incorporating a knitted textile upper.
Fig. 5 is an exemplary knitted textile showing a cut pattern/direction pattern for tensile and strain testing at various orientations according to certain embodiments herein.
Fig. 6 illustrates a schematic diagram illustrating stress and strain testing of a knitted textile according to certain embodiments herein.
Fig. 6A illustrates the steps of obtaining a textile sample for testing.
Fig. 6B illustrates the step of cutting and positioning one or more textile samples for tensile and strain testing.
Fig. 6C illustrates the step of evaluating the load versus axial displacement of the textile sample.
Fig. 6D illustrates an equation for determining Poisson's ratio for various textile samples.
Figure 6E illustrates the step of plotting the load versus axial displacement data for the textile sample.
Fig. 6F illustrates the step of determining the poisson's ratio for various textile samples.
Fig. 6G illustrates a textile sample in an unstretched state, with no strain and no displacement.
Detailed Description
Described herein is a
Headings are provided for the convenience of the reader only and should not be construed to limit the scope of the disclosure or the appended claims.
The term "textile" or "textile component" as used herein includes knitted, woven and non-woven fabrics or cloths. Although reference is frequently made herein to "knitted textiles," "knitted uppers," and the like, it should be understood that other textiles may also be employed in certain embodiments.
The term "article of apparel" as used herein refers to any article of footwear or clothing that is configured to be worn on a person. Thus, examples of articles of apparel include shoes, boots, helmets, hat (hat), cap (cap), shirts, pants, shorts, and sleeves, as well as many other products configured to be worn on a person.
The term "athletic equipment" as used herein refers to any article that is primarily used for performing athletic activities and may be formed using textile manufacturing processes similar to or the same as those used for articles of apparel as provided herein. Examples of athletic equipment suitable for particular embodiments include knee pads, soccer balls, baseball balls, elbow pads, backpacks, luggage, dudous (cinchpack), and belts.
In one aspect, a
In an embodiment, the knitted
As used herein, the term "integrally formed" means that the first and
In a preferred embodiment, the integrally formed textile is an integrally formed knitted
The terms "preferred" and "preferably" refer herein to embodiments of the invention that may provide certain benefits under certain circumstances. However, other embodiments may be preferred, under the same or different circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the disclosure.
In some embodiments, the
Because it should be understood that
In the embodiments herein, the
In an embodiment, an array of
The term "array" means that there are a plurality of repeating knit patterns that are particularly visible in the
In each of the embodiments of fig. 1A, 1B and 1C, the array of
In some embodiments, the array of
The discontinuous array of
Without wishing to be bound by any particular theory, the structure of the array of knit patterns 16 (and the array of fused patterns after melting) may generally be responsible for the unique tensile properties, anisotropic behavior, and poisson's ratio of the disclosed
In some embodiments, as shown in fig. 5, for example,
It is to be understood that, where a range is disclosed herein, the disclosure covers all values up to and including the explicitly disclosed values, as well as all values between those explicitly disclosed values. For example, the disclosed range of 20.0mm to 30.0mm includes 20.0mm, 30.0mm, and all values therebetween.
In certain embodiments, when tension in first axis 18 and/or
In some embodiments, the
In embodiments, the
Examples of suitable thermoplastic compositions include thermoplastic polyurethanes, polyamides, polyesters, polypropylenes, and polyolefins. Many, but not all, thermoplastic compositions are polymeric materials.
The
While the
Thus, in some embodiments, the thermoplastic composition comprises at least one thermoplastic polyurethane. In certain embodiments, the
Although a single thermoplastic composition may be used, the
As a similar example, the individual filaments of the
Various other configurations, yarn types, and knitting methods of
In some embodiments, the yarn comprising the thermoplastic composition is treated (e.g., by heat) to melt the thermoplastic composition, forming a film 24 comprising the yarn in remelted form. The film 24 comprising such remelted yarns may be non-filamentous, at least in the layer or region where the melting of the yarns comprising the thermoplastic composition is complete. In addition to forming film 24, the remelted yarns may be thermally bonded with other portions of knitted
In embodiments, the
In embodiments, the first melting temperature is substantially lower than the second melting temperature or the second decomposition temperature. This ensures that the treatment (e.g., heat treatment) of the
In some embodiments, the second composition comprises a thermoset that decomposes rather than melts when it is heated. Thus, in certain embodiments, the first melting temperature is at least 5 degrees celsius, at least 10 degrees celsius, at least 15 degrees celsius, or at least 20 degrees celsius lower than the second decomposition temperature.
In some embodiments, the second composition comprises a thermoplastic material that melts when it is heated, rather than (or at a temperature below) decomposing. Thus, in certain embodiments, the first melting temperature is at least 5 degrees celsius, at least 10 degrees celsius, at least 15 degrees celsius, or at least 20 degrees celsius lower than the second melting temperature.
Various methods may also be used to reduce the effect of exposing the
Untreated knitted textile
In certain embodiments, a
As used herein, the term "anisotropic" refers to a material (e.g., a textile) that has physical properties of different values when measured in different directions. A common example is wood, which is stronger along the grain (grain) than across the grain. Conversely, the term "isotropic" refers to a material (e.g., a textile) having physical properties that have the same or similar values when measured in different directions. As used herein, the term "elastic modulus" may be used interchangeably with the terms "young's modulus" or "tensile modulus" and is generally the ratio of stress (force per unit area) along an axis relative to strain (proportional deformation) along that same axis.
The anisotropic properties are particularly useful when the disclosed
Fig. 3 and 4 illustrate two perspective views of an article of footwear 26 incorporating a knit textile upper 28 according to certain embodiments herein. Fig. 3 illustrates a perspective view of the medial side of the article of footwear 26, while fig. 4 illustrates the lateral side. The
Thus, in a particular embodiment, a
Treated knitted textile
In embodiments, the treatment of knitted
In some embodiments, the properties of knitted
In a particular embodiment, the
As used herein, the term "remelted" means that the yarn and/or composition (e.g., thermoplastic composition) is present in a non-filamentous form. For example, the remelted yarn and/or composition may be heated such that individual filaments of the yarn and/or composition at least partially melt or fuse, and the individual filaments lose their filamentous character. Other methods of forming the remelted composition may be envisioned by those skilled in the art.
Because
In certain embodiments, the heat treatment significantly increases the stiffness of the knitted
In other embodiments, the textile is isotropic.
In some embodiments, the textile is anisotropic in one region (i.e., zone) and isotropic in another region.
In certain embodiments, the heat treatment significantly increases the poisson's ratio of knitted
According to certain embodiments,
Thus, in a particular embodiment, a
In the embodiments herein, knitted
As used herein, the term "auxetic" generally means a material having a negative poisson's ratio. In some cases, the material will contract in the transverse direction when compressed (or will expand in the transverse direction when stretched), resulting in a negative poisson's ratio. When stretched, the auxetic material thus becomes thicker perpendicular to the applied force. This typically occurs due to the way the internal structure of the auxetic material deforms when the sample is loaded uniaxially.
The auxetic behavior may be useful in areas where curtain-like fit (drape-like fit) is desired, but not pleated or folded at irregular contours. Auxetic materials may be particularly suitable for areas of an article of apparel where conforming to irregular shapes is desired.
In this manner, the
In some embodiments, the
In further embodiments, texture may be added to the
Each of these properties of knitted
Alternative constructions
It is also possible to form a
Thus, in one aspect, a
In embodiments, heating the
In another aspect, a
Various methods for selectively heat treating only a portion, a section, or a depth of a textile are also known in the art, including blocking, masking, and using chemicals that promote or minimize temperature changes in the textile. Using a single yarn type may simplify the manufacturing process and reduce some of the waste associated with
Layered textile
In one aspect, the textile is formed by layering, embroidering, printing, bonding, strapping, masking, laminating or otherwise attaching (collectively "layered textiles") the material of the
In this regard, the
Each of the
In embodiments, the heat treatment of the
Article of apparel and sporting equipment
In some embodiments,
Thus, in a particular embodiment, an article of footwear 26 includes an upper 28 and a sole structure 22, the upper 28 including a
In some embodiments, the article of footwear 26 has a
In some embodiments,
Method of forming textiles and articles
In one aspect, a method for forming a
In some embodiments, the method includes knitting a
In embodiments, the first melting temperature is at least 5 degrees celsius, at least 10 degrees celsius, at least 15 degrees celsius, or at least 20 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
In some embodiments, the
In certain embodiments, the molten first thermoplastic composition forms a film 24 on the
In one aspect, a method of manufacturing a
In an embodiment, the method comprises: providing a knit structure 10, the knit structure 10 including a first layer 4 and a second layer 6, the first layer 4 including a first yarn 12, the first yarn 12 including a first thermoplastic composition having a first melting temperature, the second layer 6 being located on an opposite side of the knit textile 2 from the first layer 4 and being integrally formed with the first layer 4, the second layer 6 including a second yarn 14 formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn 12 and the second yarn 14 forming interlocking knit stitches, the first layer 4 including an array of knit patterns 16 formed from the first yarn 12, the array of knit patterns 16 defining voids 8 in the first layer 4, the voids 8 passing through the first layer 4 and to the second layer 6, wherein a portion of the yarns of the second layer 6 are exposed through the voids 8 in the first layer 4, the first melting temperature being lower than the lowest of the second melting temperature and the second decomposition temperature; and heating the first layer 4 to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition.
In some embodiments, the
In particular embodiments,
In one aspect, a method for manufacturing an article of footwear 26 is disclosed.
In some embodiments, the method comprises: providing a knit structure 10, the knit structure 10 including a first layer 4 and a second layer 6, the first layer 4 including a first yarn 12, the first yarn 12 including a first thermoplastic composition having a first melting temperature, the second layer 6 being located on an opposite side of the knit textile 2 from the first layer 4 and being integrally formed with the first layer 4, the second layer 6 including a second yarn 14 formed from a second composition having a second melting temperature or a second decomposition temperature or both, the first yarn 12 and the second yarn 14 forming interlocking knit stitches, the first layer 4 including an array of knit patterns 16 formed from the first yarn 12, the array of knit patterns 16 defining voids 8 in the first layer 4, the voids 8 passing through the first layer 4 and to the second layer 6, wherein a portion of the yarn of the second layer 6 is exposed through the voids 8 in the first layer 4; forming knitted structure 10 into upper 28; heating a portion of the first layer 4 to a temperature above the first melting temperature and below the lowest of the second melting temperature and the second decomposition temperature to at least partially melt the first thermoplastic composition and form a film 24 on the first layer 4; and attaching the upper 28 to the outsole to form the article of footwear 26.
In embodiments, the first melting temperature is lower than the lowest of the second melting temperature and the second decomposition temperature. In certain embodiments, the first melting temperature is at least 5 degrees celsius, at least 10 degrees celsius, at least 15 degrees celsius, or at least 20 degrees celsius lower than the lowest of the second melting temperature and the second decomposition temperature.
In some embodiments, the first axis 18 is oriented on the article of footwear 26 from the medial side to the lateral side, and the
In particular embodiments, the poisson's ratio of knitted
In some embodiments,
In one aspect, a method of forming an article of footwear 26 is disclosed.
In some embodiments, the method includes providing a
In some embodiments, the first axis 18 is oriented on the article of footwear 26 from the medial side to the lateral side, and the
In particular embodiments, the poisson's ratio of knitted
In some embodiments,
The following examples are provided to illustrate certain specific features and/or aspects. These examples should not be construed as limiting the present disclosure to the particular features or aspects described therein.
Examples
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