This application claims priority to Chinese Patent Application No. 202310864691.9, filed on Jul. 13, 2023, the entire contents of which are expressly incorporated herein.
The present disclosure generally relates to a knitted article with an integrated loop closure and methods of forming a knitted article with an integrated loop closure.
Automated knitting and 3D knitting technology has revolutionized the textile industry by enabling the creation of complex, customizable, and functional fabrics. Unlike traditional knitting methods, which required time-consuming and labor-intensive processes to form articles, automated knitting and 3D knitting allow for the quick an efficient production of flat, cylindrical, and in the case of 3D knitting, intricate 3D shapes, including clothing, footwear, and other textiles.
Automated and 3D knitting technology relies on computer-controlled knitting machines that can produce three-dimensional shapes by varying the placement and tension of the yarn or thread. These machines can be programmed to produce a wide range of shapes and patterns, enabling designers to create fabrics with specific functional properties, such as elasticity, strength, and breathability.
There are several advantages to using automated and/or 3D knitting technology over traditional manufacturing methods. For one, knitting can reduce waste and save time and resources, as it eliminates or reduces the need for cutting and sewing multiple pieces together. Additionally, knitting allows for greater customization and design flexibility, enabling designers to create unique and complex structures that are not possible with traditional methods.
Despite the potential benefits of the aforementioned knitting technologies, additional improvements can be made to incorporate features that improve the functionality of goods formed by automated knitting technology.
Non-limiting and non-exhaustive embodiments of the present invention are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified.
The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well known components are hidden from view to avoid obscuring such concepts. In addition, it is appreciated that the figures provided herewith are for explanation purposes to persons ordinarily skilled in the art and that the drawings are not necessarily drawn to scale.
Reference throughout this specification to one aspect, an aspect, one example or an example means that a particular feature, structure or characteristic described in connection with the embodiment or example may be a feature included in at least example of the present invention. Thus, appearances of the phrases in one aspect, in an aspect, one example or an example in various places throughout this specification are not necessarily all referring to the same example. Furthermore, the particular features, structures or characteristics may be combined in any suitable combinations and/or sub-combinations in one or more embodiments or examples.
Throughout the disclosure, the terms substantially or approximately may be used as a modifier for a geometric relationship between elements or for the shape of an element or component. While the terms substantially or approximately are not limited to a specific variation and may cover any variation that is understood by one of ordinary skill in the art to be an acceptable level of variation, some examples are provided as follows. In one example, the term substantially or approximately may include a variation of less than 10% of the dimension of the object or component. In another example, the term substantially or approximately may include a variation of less than 5% of the object or component. If the term substantially or approximately is used to define the angular relationship of one element to another element, one non-limiting example of the term substantially or approximately may include a variation of 5 degrees or less. These examples are not intended to be limiting and may be increased or decreased based on the understanding of acceptable limits to one of skill in the relevant art.
For purposes of the disclosure, directional terms are expressed generally with relation to a standard frame of reference when the aspects or articles described herein are in an in-use orientation. In some examples, the directional terms are expressed generally with relation to a left-hand coordinate system.
Terms such as a, an, and the, are not intended to refer to only a singular entity, but also include the general class of which a specific example may be used for illustration. The terms a, an, and the, may be used interchangeably with the term at least one. The phrases at least one of and comprises at least one of followed by a list refers to any one of the items in the list and any combination of two or more items in the list. All numerical ranges are inclusive of their endpoints and non-integer values between the endpoints unless otherwise stated.
The terms first, second, third, and fourth, among other numeric values, may be used in this disclosure. It will be understood that, unless otherwise noted, those terms are used in their relative sense only. In particular, certain components may be present in interchangeable and/or identical multiples (e.g., pairs). For these components, the designation of first, second, third, and/or fourth may be applied to the components merely as a matter of convenience in the description.
A typical hook and loop fastening system has a hook portion with a plurality of small hooks that ‘mate’ or otherwise removeably connect to a loop portion having a plurality of small loops, attaching temporarily, until pulled apart with sufficient force. Traditional hook and loop fastening systems may be referred to or commonly known as VELCRO®, and typically include a hook side and a loop side that can be pressed together to mate the hook and the loop side. Typically, hook and loop fastener closure systems require a hook and loop member or pre-made fabric to be glued, bonded or stitched to an article. The bonding and/or stitching of the hook and/or loop members can lead to irritation, delamination issues, and/or cause design constraints which may have undesirable characteristics in the finished article. For example, stitching of a hook and/or loop panel may increase the stiffness or decrease elasticity of the finished article. Further, the fastening of hook and/or loop members to an article decreases efficiency of making an article and/or results in wasted materials.
This overview, and the detailed description that follows, has been presented for purposes of illustration and description. It is not intended to be exhaustive nor to limit the disclosure to the forms described. Numerous modifications are possible considering the teachings herein, including any combination of the different examples described herein. Some of those modifications have been discussed and others will be understood by those skilled in the art. The various aspects were chosen and described to best illustrate the principles of the present disclosure and various aspects as are suited to the particular use contemplated. The scope of the present disclosure is, of course, not limited to the examples or aspects set forth herein but can be employed in any number of applications and equivalent devices by those of ordinary skill in the art. Rather, it is hereby intended the scope be defined by the claims appended hereto.
The article 100 may for example be a portion of a shoe, sandal, or other footwear. For example,
While examples are provided herein, it is noted that the current disclosure is not limited to a particular article. Some additional examples of implementations of the current disclosure include but are not limited to bags, purses, jackets, coats, sweaters, and/or covers to name some additional examples.
The woven article 100 may for example be knitted and include sections or knitted portions 120 that are formed of interlocking fiber loops, which may alternatively be referred to as stitches throughout this disclosure. In some examples, the stitches or loops or series of stitches or loops may be referred to throughout the disclosure as a textile. The interlocking fiber loops may be formed of any yarn or thread formed of natural or synthetic materials or combinations thereof. Fibers include any one or a combination of natural or synthetic materials. Natural fibers include cotton, wool, alpaca, hemp, coconut fibers or silk, for example. Among the synthetic fibers are polymer-based fibers such as Nylon™, polyester, elastane or spandex, or Kevlar™, which may be produced as classic fibers, high-performance fibers, or technical fibers. Yarn and thread are terms for a structure of one or several fibers that is long in relation to its diameter. A fiber is a flexible structure that is rather thin in relation to its length. The terms yarn, thread, or textile may be used interchangeably throughout the disclosure.
The woven article 100 may for example be formed using an automated flat-knitting, fly-knitting and/or 3D knitting process via an automated or semi-automated knitting machine, that may employ any one or combination of weft-knitting and/or warp knitting to form the aforementioned interlocking fiber loops or stitches.
The stitches may for example be weft-knitted and/or warp-knitted. In weft-knitted fabrics and single-thread warp-knitted fabrics, the stitch formation may include at least one thread or yarn, with the thread running in a longitudinal direction of the product (at a right angle to the direction in which the product is made during the manufacturing process). In warp-knitted fabrics, the stitch formation may include at least one warp sheet (a plurality of so-called warps), with the stitch-forming threads running in a longitudinal direction (in the direction in which the product is made during the manufacturing process).
Further, the article may be formed fully or at least in part by warp-knitting. Warp-knitting may utilize many threads from the top down and by interlocking the stitches of a thread with the stitches of neighboring threads. Depending on the desired pattern, the stitches of the neighboring threads are interlocked. Some examples of interlocking connections include but are not limited to pillar, tricot, 2×1 plain, satin, velvet, atlas, and twill.
The stitches described herein may be arranged above one another with joint binding sites, which as noted above may be referred to as wales. One example of a wale is shown as reference 209 in
The aforementioned knitted article or portion of a knitted article may be manufactured using an automated or semi-automated machine with a plurality of “needles.” In some aspects of the disclosure, the “needles” may comprise latch needles 230 (
In one aspect of the disclosure, the knitting machine may have two parallel rows of needles (e.g., needles 230). When looked at from the side, the needles of the two rows of needles may, for example, be opposite each other and angled relative to one another (e.g., at a right-angle). The use of two rows of needles allows for a one-layered or two-layered article to be simultaneously knitted. For example, a one-layered knitted fabric may be created when stitches generated on the first row of needles are intermeshed with stitches generated on the second row of needles. In another example, a two-layered knitted fabric may be created when stitches generated on the first row of needles are not, or are only selectively intermeshed with stitches generated on the second row of needles and/or if stitches generated on the first row of needles are merely intermeshed at an end of a tow-layered weft-knitted fabric.
Accordingly, an article as described herein may be at least partially manufactured using the aforementioned method and/or machine. If only one row of needles is used, a one-layered knit is created. If two rows of needles are used, stitches of both rows of needles may be connected consistently to each other so that a resulting knit comprises a single layer. If two rows of needles are used, and stitches of both rows of needles are not connected, or are only connected along certain lines, two layers are created, for example, to form a first layer and second layer in the knit.
Three-dimensional (3D) knit articles may also be manufactured via the aforementioned machine or method(s). In addition, 3D knit articles may be formed via weft-knitting machines and/or warp-knitting machines. 3D knitting or fly-knitting (the two terms may be used interchangeably herein) may be used to form articles or portions of articles that have spatial characteristics or structure. A three-dimensional weft-knitting or warp-knitting technique allows for spatial knitwear to be manufactured in a single process and without seams, cutting, or making-up into one piece.
The spatial structure described above may be formed by varying the number of stitches in the direction of the wales. The process of varying the number of stitches, which may otherwise be referred to as forming “partial courses” may be achieved by a mechanical process referred to as “needle parking.” When partial courses are formed, stitch formation temporarily occurs along only a partial width of the knitted article. The needles that are not involved in the stitch formation keep the half-finished stitches (“needle parking”) until weft-knitting occurs again at the same position.
The aspects described above may be used to knit an article that has different functional areas while maintaining its contours. The structures of knitwear may be adjusted to provide functional requirements in certain areas by the stitch pattern, the yarn, the needle size, the needle distance, or the tensile strain, which is subject to the yarn that is placed on the needles being selected accordingly. In some aspects of the disclosure, two or more knit layers may be combined and/or formed at once on a weft-knitting and/or warp-knitting machine with multiple rows of needles. In the case of two or more knit layers being combined, one or more layers may be formed in separate stages and then combined such as by stitching, gluing or otherwise adhering, welding (e.g., ultrasonic or chemical welding) and/or linking.
An alternative to two-layered knit articles may include spacer weft-knitted fabric or spacer warp-knitted fabric. In this example, a spacer yarn may be weft-knitted or warp-knitted loosely between two weft-knitted or warp-knitted layers, interconnecting the two layers, and simultaneously serving as a filler. The spacer yarn may be the same material or different from one or more of the layers themselves. Spacer weft-knitted fabrics or spacer warp-knitted fabrics may also be referred to herein as three-dimensional (3D) articles, but may be different from the aforementioned 3D weft-knitted fabrics or 3D warp-knitted fabrics or articles.
When forming the aforementioned loops (e.g., loops 110A and/or 110B in
In order for the aforementioned drop-stitch or press-off stitch to function as a loop of a hook- and loop closure, the loop must be properly secured to prevent pulling-apart of the article, for example when the hook and loop closure is to be re-opened (e.g., as shown in
In one aspect of the disclosure, any one of or combination of a step knitting, stitch crossed, and/or plating may be used to form an article with an integrated loop section. The plating stitch may be integrated into the article to ensure that the loops of the loop section remain properly fixed or anchored to the knitted article to ensure that the loop section functions properly when it is removably connected to a hook section of the article (i.e., to properly function as a hook and loop connection).
The aforementioned step knitting process includes forming stitches using yarn fed by one or more yarn feeders one-by-one based as a unit module (i.e., process) then repeating the steps to form the articles.
The stitched cross knitting process includes transferring the yarn forming the stitch from a first needle bed to a second needle bed or transferring the yarn forming the stitch from the second needle bed back to the first. Additional aspects are described below with respect to
The aforementioned plating process involves two or more yarns being feed to the needles to form two different stitches, one stitch covers another. In some aspects the two different yarns being fed may be different colors and/or formed of differing materials.
While each method above is described separately any combination of the processes described above may be utilized to prevent the drop-stitched or pressed off stitches from moving when used as a loop portion of a hook and loop fastener. In a preferred example, all three methods are utilized to provide triple-locking to the drop-stitched or pressed-off stitches.
Each of the needles may include a corresponding pivotable latch 912a and/or 912b and a hook at ends thereof, e.g., corresponding hooks 914a and/or 914b. In one aspect of the disclosure, each one of the needles 910a and/or 910b, including the rows of needles (not shown) may be moveable individually, so that every single latch needle may be controlled to catch a thread for stitch formation. It is noted that
In one aspect of the disclosure, a transferring process may be implemented to lock the formed plurality of loops of the loop portion (e.g., loop portion 110A and/or 110B in
As mentioned above, the knitted article may be manufactured a machine with a plurality of needles, i.e., a first needle 1110a and a second needle 1110b, the first needle 910a and/or the second needle 1110b may for example each be single needles in a row of a plurality of needles. The first needle 1110a and second needle 1100b may be analogous with the first needle 910a and the second needle 910b in
Each of the needles may include a corresponding pivotable latch 1012a and/or 1012b and a hook at ends thereof, e.g., corresponding hooks 1014a and/or 1014b. In one aspect, each one of the needles 1110a and/or 1110b, including the rows of needles (not shown) may be moveable individually, so that every single latch needle may be controlled to catch a thread for stitch formation. It is noted that
This written description uses examples to disclose aspects of the invention, including the preferred embodiments, and also to enable any person skilled in the art to practice the aspects thereof, including making and using any devices or systems and performing any incorporated methods. The patentable scope of these aspects is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims. Aspects from the various embodiments described, as well as other known equivalents for each such aspect, can be mixed and matched by one of ordinary skill in the art to construct additional embodiments and techniques in accordance with principles of this application.
Number | Date | Country | Kind |
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202310864691.9 | Jul 2023 | CN | national |