Register Now. Textile materials are prone to dangers such as moisture, heat, mildew, fungus, insects and rodents. Therefore storing the textile materials in the right store and condition is important. It is necessary to know the general principals of care and storage of materials because they differ greatly in their resistance to various dangers such as moisture, heat, mildew, fungus, insects, and rodents. There are certain insects; however, that will eat almost anything.
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- THE CHALLENGE
- Knitted Fabric Storage Rack
- Knitting machine
- Knitted fabrics market to witness significant growth
- The five automations that launch fashion 4.0
- MXene-coated yarns as platform technology for e-textiles
- Multifunctional Foldable Knitted Structures: Fundamentals, Advances and Applications
- knitted fabrics
THE CHALLENGEVIDEO ON THE TOPIC: Knit Factory; Knitting, Dyeing, Finishing and Delivery
This application Aug. The invention provides a novel method for producing shrink-free elastic knitted fabrics which includes impregnating the fabric with a stabilizing resin and mechanically compressing the knitted fabric an amount more than necessary to provide shrinkage control but less than that amount which results in discernible pleats.
The stabilizing resin is subsequently cured to provide the finished product. This application is a continuation-in-part of application Ser. The present invention relates to knitted fabrics, and is directed more specifically to the treatment of knitted fabrics to stabilize them in a shrink-free condition and to impart thereto characteristics of elastic restorability. In more specific aspects, the invention relates to a fabric treated in accordance with the invention and to a yarn derived from the fabric.
In a knitted fabric, as distinguished from a woven fabric, the fabric is constructed in both its widthwise and lengthwise directions by a series of interlocked loops formed by a continuous yarn or a series of continuous yarns. As a result, a knitted fabric has a substantial interdependency of its length and width dimensions, and it is also easily distortable.
These characteristics have made the knitted fabric a desirable material for many articles of clothing, because of the ability of a garment, formed of knitted fabric, to conform and to change its shape to accommodate body movements, etc.
Because of the inherently distortable nature of knitted fabrics, and because of the distortions inevitably imparted to the fabric during its construction and processing shrinkage of knitted fabric, particularly in a lengthwise direction, has always been a significant problem. Many of the problems related to such knit fabric shrinkage have been alleviated by certain important inventions of the recent past, including particularly those described and claimed in United States Letters Patent No.
These and related inventions have, for the first time, enabled knitted fabric processors to treat knitted fabric, on a commercial scale, in a manner to impart initially to the fabric an artificial lengthwise compression, or compaction, corresponding in overall extent to the amount of inherent lengthwise shrinkage in the fabric, with due regard for the necessary handling of the fabric during its manufacture into garments, etc.
For the first time, these inventions have enabled knitted fabric and garments made from knitted fabric to be marketed on a large scale with a guarantee of less than 1 percent lengthwise shrinkage, as had been a conventional business practice for many years in connection with fabrics of woven construction. Although the ability to mechanically impart longitudinal compressive shrinkage to knitted fabrics, to an extent enabling them to be sold with a guarantee of less than 1 percent shrinkage, represented an advance of extraordinary significance in the field of knitwear, and greatly increased the desirability and usefulness of knitted fabrics and garments made therefrom, utilization of compressively preshrunk knitted fabric has been to a large degree, limited to such garments as underwear, sleepers, polo shirts, and the like, and was not widely accepted for such applications as womens outerwear, for example.
In this respect, conventional fabrics i. While this is not particularly a disadvantage with respect to T-shirts, polo shirts, underwear items, sleepers, and like items, it would represent a disadvantage with respect to higher fashion outerwear, where precise form and fit of the garment are significant. This has largely limited the fashion outerwear field to knitted fabrics of expensive construction, utilizing special yarns, such as special thermoplastics, spandex elastic yarns, and the like.
In accordance with the present invention, further fundamental improvements have been made in the processing of knitted fabrics, containing or formed entirely of ordinary fibers, which enable shrink-free knitted fabric to be desirably and advantageously utilized in such demanding applications as fashion outerwear, for example.
To this end, the process of the invention provides for the compressive shrinking of the fabric by mechanical means to a predetermined and controlled extent, and the stabilization of the fabric in such compressively pre-shrunk condition, in a manner which imparts characteristics of elastic restorability to the fabric.
The extent of the mechanical compressive shrinkage is critical to the process, as is the manner in which the stabilization of the fabric is effected. Fabric treated in accordance with the invention may be merchandised with a firm guarantee of lengthwise shrinkage of less than 1 percent, under the severe conditions of washing and tumble drying, and yet is most desirably suited to such demanding applications as fashion outerwear, because of the ability of the treated fabric to conform, to acommodate the stresses and the distortions of body movements, and to return to and retain its initial form and shape.
As a more specific aspect, the process of the invention involves carrying out the mechanical compressive shrinking operation to impart a precisely controlled amount of compressive shrinkage to the knitted fabric prior to its stabilization.
The minimum level of compressive shrinkage imparted to the fabric is that which at least slightly exceeds the inherent residual shrinkage of the raw fabric when subjected to wash and tumble dry testing. This critical minimum will vary from one fabric to another, as a function of fabric construction, previous processing and the like, but can be readily determined with respect to any fabric by measuring its length before and after washing and tumble drying in accordance with a standard procedure.
In the construction and preliminary processing of knitted fabric, significant tensions and lengthwise elongations are introduced into the fabric e.
The processor of woven fabric, on the other hand, while faced with problems of a somewhat related nature, is able to deal with them at an entirely different order of magnitude, to such an extent that the problems are in reality different in kind as well as different in amount.
Thus, in virtually all situations contemplated by the invention, the minimum mechanical compressive shrinkage required to be imparted to the knitted fabric to exceed its inherent residual shrinkage will be at least percent, which is grossly in excess of anything contemplated for the treatment of woven fabrics and, indeed, far beyond the capacity of most equipment and processes to deal with.
The maximum amount of mechanical compressive shrinkage tolerated by the process is that amount at which crimping or pleat formation appears and becomes noticeable to the eye. The maximum amount of mechanical compressive shrinkage tolerated by the process will vary from one fabric to another but, again, is readily determinable with respect to any given fabric by progressively increasing the amount of compressive shrinkage until the undesirable crimp or pleat formations become apparent.
In virtually all cases contemplated by the invention, the maximum amount of mechanical compressive shrinkage tolerated will not be significantly in excess of 30 percent. Although it is contemplated that the invention may be practiced with compressive shrinkage equipment of more than one type, significantly superior results are achieved with the equipment and processes of the beforementioned patents of Eugene Cohn et al.
Compressive shrinkage systems which are incapable of imparting at least 15 percent compressive shrinkage would, of course, be wholly inoperable in the process. Systems capable of inducing up to, say, percent compressive shrinkage could be utilized in the practice of the process, but would be limited with respect to the range of fabrics capable of being handled and the variety of fabrics characteristics capable of being achieved.
Stabilization of the compressively treated fabric is effected, in accordance with the process of the invention, by impregnating the knitted fabric, prior to compressive shrinkage treatment, with a wash-and-wear type stabilizing resin. The resin characteristics are chosen to enable the impregnated fabric to be dried, if necessary, and exposed to such heat and manipulation as is appropriate to the compressive shrinkage operation, without causing the resin to become set or cured.
After compressive shrinkage has been imparted to the impregnated fabric, it is then heated sufficiently to cure and set the resin and impart substantial permanence and elastic restorability to the fabric. The process of the invention represents a significant advance in the knitwear field, in that stability of the fabric and its ability to elastically restore itself to its stabilized form can be imparted to the fabric through the treatment of the so-called ordinary fibers. Heretofore, it has been necessary to utilize synthetic stretch yarns, such as spandex and other expensive yarns in the construction of the fabric in order to achive the desired stability and restoreability.
In processing a knitted fabric in accordance with the invention, appropriate balance is maintained or established between the elastic restorability of the fabric in both its lengthwise and widthwise directions, unless other characteristics are specifically desired in the finished product. A more specific facet of the invention involves the preparation of special purpose yarns by first treating knitted fabric in accordance with the process principles outlined above to provide a shrink-free, stabilized fabric, and then de-knitting the fabric to derive individual yarns having advantageous characteristics and configurations.
By reason of the substantial mechanical compressive shrinkage imparted to the fabric in accordance with the process, the individual knitted loops of yarn are reformed into a highly angular configuration, and are subsequently stabilized in such configuration-by curing of the stabilizing resin. When such fabric is dc-knitted the derived yarns retain an angular, sinuous configuration and have a desirable degree of lengtthwise elasticity.
Special and desirable effects can be achieved by subsequently utilizing these elastic yarns in the construction of other fabrics. For a better understandinng of the invention, reference should be made to the following detailed description and to the accompanying drawings, in which:.
Referring now to the drawings, and initially to FIGS. In their normal condition, the individual loops of the fabric are more or less rounded in form, and by reason of such rounded form the knitted loops can accommodate a certain amount of elastic distortion in both widthwise and lengthwise fabric directions.
The nature and extent of the normal elastic distortion is a wide variable, depending upon such fabric construction features as the size and nature of the yarns, tightness and looseness of the knit, the knitted structure itself, etc. The knitted fabric of the invention may advantageously be formed of percent cotton or other natural fibers, or may be partly of natural fibers and partly of ordinary man-made fibers. In accordance with the procedure of the invention, the knitted fabric, typically and advantageously in tubular form, but also in fiat, open-width form in appropriate cases, is thoroughly impregnated with a liquid solution of a heat-curable wash-and-wear type resin.
A specific, advantageous resin for this purpose is a solution of Permafresh TM Reactant , as made available as of Jan. This resin is indicated by the manufacturer to be a methylol imidazolidone type, which is covered by a United States Patent No. A desirable and advantageous solution of the designated resin for the purpose intended includes about 25 pounds of the Permafresh Reactant , as designated above, in a water-diluted 20 gallon mixture.
Additives, such as fiber lubricants, catalysts and wetting agents, also are utilized. The above-described resin has particular advantages in that, after impregnation of the fabric, the resin remains stable for a considerable period of time, until subsequently set in a heat-curing operation. Thus, impregnated fabric may, where appropriate and desired, be stored,.
It will be understood, of course, that the present invention is not limited to the particular resin specified above, but can utilize a variety of similar resins, which may be designated for convenience as yarn fixing resins. In the case of the specified resin, incorporating Permafresh Reactant , and other resins applied from a liquid solution, it is desirable to reduce the moisture content to a desired level for the compressive shrinkage operation.
The precise moisture level, after the drying stage, will be a function of the particular type of compressive shrinkage operation utilized, inasmuch as certain compressive shrinkage procedures in current use advantageously utiize essentially dry fabric less than percent moisture , whereas others utilize relatively moist fabric e. In any event, where the resin is a heat-curing resin, the heat of the dryer should be maintained at a level which will not promote curing.
In the case of the specified Permafresh Reactant , which is heat-curable in a temperature range of from about F. The final moisture content of the fabric may be regulated by controlling the total drying time, which is generally more preferable than varying the drying temperature. In a continuous process, the fabric may be conveyed directly from the dryer to a compressive shrinking apparatus, although it is possible with many deferred curing resins, and in particular with the specified Permafresh Reactant , to store the dried, impregnated fabric for a period of time and even to perform certain other operations, such as stripe matching, on the fabric, if desired.
In either case, the fabric ultimately is distended laterally to predetermined uniform width, perhaps steamed, and then directed into a compressive shrinkage apparatus, which most advantageously is of the type illustrated, described and claimed in the before-mentioned Eugene Cohn et al. The compressive shrinkage apparatus receives the impregnated fabric in fiat form and at a uniform, distended width and causes the fabric to be fed into compressive shrinking zone at a first predetermined speed and to be controllably released from said zone at a second predetermined and substantially slower speed, such that the fabric is substantially shortened in length within the compressive shrinking zone.
As will be understood, such reduction in length is not necessarily accompanied by corresponding alteration in fabric width, as usually would be the case by reason of the length-width interdependency of knitted fabrics. The arrangement is such that the fabric, as it emerges from the compressive shrinkage apparatus, actually has an altered structure, at least with reference to the form of the knitted stitches or loops.
The above-described alteration of fabric structure may be better understood by reference to the plain jersey knitted cotton fabric illustrated in FIGS. Thus, FIGS. In FIGS. The specific procedures to be carried out between impregnation of the fabric and compressive shrinkage thereof will vary according to the specific nature of the compressive shrinkage treatment.
In a typical treatment utilizing apparatus of the before-mentioned Eugene Cohn et al. United States patents, the fabric is dried after impregnation, and then steamed slightly immediately before compressive shrinkage to impart a controllably uniform and small amount of moisture to the fabric to assist the actual compressive shrinkage operation. In the case of so-called wet processes, such as with apparatus according to the Chatfield United States Patent No. In the case of so-called wet treatments, the fabric will be dried after the compressive shrinkage operation.
In accordance with one of the significant aspects of the invention, the impregnated fabric is treated in the compressive shrinkage stage so as to emerge therefrom with a predetermined amount of imparted compressive shrinkage, Within a precise and critical range. The minimum amount of compressive shrinkage acceptable in carrying out the process of the invention is that amountwhich will at least slightly exceed the inherent residual lengthwise shrinkage of the raw fabric.
This minimum level of compressive shrinkage may be determined readily, with respect to any piece of fabric, by subjecting a sample of the fabric to standard wash and tumble dry testing procedures, and comparing the length of the fabric before and after the testing procedures.
The maximum amount of compressive shrinkage tolerated in the practice of the invention is that amount at which the fabric becomes crimped or pleated to an extent which is apparent to the unaided eye.
Experience indicates that, for a given fabric, this maximum level of compressive shrinkage is readily ascertainable by a test procedure in which the amount of compressive shrinkage is gradually increased.
As the amount of shrinkage reaches the maximum acceptable level for the fabric, a definite and detrimental change in the appearance of the fabric is readily noticeable. After compressive shrinkage to an extent contemplated by the invention, the unstabilized fabric, when subjected to standard wash testing wash and tumble dry, as described hereinafter would tend to grow or increase slightly in length.
A reliable wash and tumble dry test procedure suitable for the purposes of the invention involves first washing the fabric sample in a conventional home-type automatic washer, using a hot wash cycle of approximately 30 minutes, with a medium load for the machine, and using a standard, commercially available home laundry detergent.
The washing cycle should be followed by two rinse cycles and a standard spin cycle for the machine. Subsequent to the foregoing washing procedure, the fabric sample should be dried in a conventional automatic hometype tumble dryer, operated at the manufacturers recommended temperature for the fabric, but not less than F.
The machine should be operated at its normal tumble speed under medium load specified for the machine. Measurement of fabric dimensions is made by placing permanent marks on the fabric samples and measuring the distance between them before and after the wash and tumble dry procedure. The fabric should be reasonably free of wrinkles and distortions during the taking of measurements, but should not be ironed.
Although it is possible to perform the processes of the invention with several different types of mechanical compressive shrinkage apparatus, the systems of the beforementioned Eugene Cohn et al. Patents No. In this respect, the system of the before-mentioned Eugene Cohn et al.
By way of example only, and not of limitation, it is envisioned that it might be possible to usefully employ to a limited extent in the process of this present invention compressive shrinkage apparatus such as illustrated in the Chatfield Patent No. United States Patent No. In the preferred and advantageous procedure of the invention, in which the compressive shrinkage apparatus is in accordance with the beforementioned Eugene Cohn et al. As may be better understood upon reference to the before-mentioned Cohn et al.
Patent No. Prior to compressive shrinkage operation, the fabric is laterally distended in a controlled manner to a predetermined uniform width, and the fabric is directed into the compressive shrinkage operation while such predetermined width is maintained. In addition to providing for necessary uniformity of fabric presentation to the compressive shrinkage operation, the lateral distention of the fabric can be so controlled in extent as to enable a desired balance to be maintained between lengthwise and widthwise shrinkage and elastic restorability in the finished product.
It will be understood, in this respect, that a knitted fabric may have varying degrees of inherent width Wise elasticity, depending upon its knitted construction as well as upon the various treatments to which the fabric has been subjected.
After compressive shrinking, the fabric, while being maintained in a condition free of lengthwise and other tensions, is conveyed through a heating chamber in which the impregnated resin is permanently cured.
Prospects for the textile and clothing industry in China, Safety shoe featuring knitted sensors showcased as CES Intertextile Apparel returns following strong growth. The report titled Latest Study on Knitted Fabric Market contains market predictions related to market size, revenue, production, CAGR, consumption, gross margin, price, and other substantial factors. Growing apparel industry is one of the major factors driving the market. Furthermore, increasing importance of knitted fabric in the automobile, construction, manufacturing, and medical sectors is expected to fuel market demand over the forecast period.
Knitted Fabric Storage Rack
The global knitted fabric market size was valued at USD Growing apparel industry is one of the major factors driving the market. Furthermore, increasing importance of knitted fabric in the automobile, construction, manufacturing, and medical sectors is expected to fuel market demand over the forecast period. Shifting consumer preference for lightweight and high performance knitwear is fueling the demand for feathery raw materials including polypropylene, linen, silk, faux fur, and synthetic fibers. Woven fabrics have been replacing bulked yarns made knitted fabrics. Over the past few years, the apparel industry has been witnessing steady growth in demand for the loop stitch jackets, cardigans,large shawls, and scarfs. In terms of color, grey, classic black, brown, and beige have been gaining significant popularity across the world.
I have called neorelocalization the process of the return of fashion manufacturing to locations near the European and U. For the same reason I think it is very convenient to use the term fashion 4. This is how in Modaes already ventured into the analysis of the process and they reported on it in the post Moda 4. Today, with the same approach to the future, they use the term correctly to promote the next Innovation Fashion Forum under the title: Fashion 4. Before fully understanding the automation landscape in apparel production and its potential effect on local and nearby manufacturing, fashion and retail companies must have a deep understanding of new technologies. In the abovementioned report , the professionals at McKinsey make a wise selection of these technologies that participate in the new garment production processes.
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Knitted fabrics market to witness significant growth
Fibrecare Technologies , established in is a complete solution provider for textile and garment industries. Our factory is located in the Coimbatore Manchester of South India. Our infrastructure is built in spacious area with world class standards. We have the state of art machineries and tools, to meet the client expectations.
This application Aug. The invention provides a novel method for producing shrink-free elastic knitted fabrics which includes impregnating the fabric with a stabilizing resin and mechanically compressing the knitted fabric an amount more than necessary to provide shrinkage control but less than that amount which results in discernible pleats. The stabilizing resin is subsequently cured to provide the finished product. This application is a continuation-in-part of application Ser. The present invention relates to knitted fabrics, and is directed more specifically to the treatment of knitted fabrics to stabilize them in a shrink-free condition and to impart thereto characteristics of elastic restorability. In more specific aspects, the invention relates to a fabric treated in accordance with the invention and to a yarn derived from the fabric. In a knitted fabric, as distinguished from a woven fabric, the fabric is constructed in both its widthwise and lengthwise directions by a series of interlocked loops formed by a continuous yarn or a series of continuous yarns. As a result, a knitted fabric has a substantial interdependency of its length and width dimensions, and it is also easily distortable. These characteristics have made the knitted fabric a desirable material for many articles of clothing, because of the ability of a garment, formed of knitted fabric, to conform and to change its shape to accommodate body movements, etc. Because of the inherently distortable nature of knitted fabrics, and because of the distortions inevitably imparted to the fabric during its construction and processing shrinkage of knitted fabric, particularly in a lengthwise direction, has always been a significant problem.
The five automations that launch fashion 4.0
India is an agricultural-based economy and is the largest producer of fruits and vegetables in the world. The estimated annual production of fruits and vegetables in the country is about million tonnes. Cold storage is a temperature — controlled supply chain network, with storage and distribution activities carried out in a manner such that the temperature of a product is maintained in a specified range, needed to keep it fresh and edible for a much longer period than in normal ambient conditions. A cold chain can be managed by a quality management system generally called as warehouse management. The Indian Government focus on incentivizing the manufacturing sector is the key to growth of warehousing.
MXene-coated yarns as platform technology for e-textiles
We can always guarantee the ecological sustainability of our garments, because we have developed our own global textile and manufacturing supply chain. By monitoring our source materials and the recycling process in detail, we can ensure that the quality of our products meets the standards of our clients and their customers. With the help of the best experts and suppliers in the industry, we have reached a level of textile quality that is the same, and in many cases better, than that of traditional fabrics. Instead, we concentrate on basic garments. We believe everyone should have the possibility to make a better choice with Pure Waste. We then sort it by quality and color. The color of the waste, defines the color of the final product. No dyeing is needed.
Multifunctional Foldable Knitted Structures: Fundamentals, Advances and Applications
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There is no more cost-effective method to manufacture fabrics than circular knitting. As this realisation has long since been shared by producers around the world. These microprocessor controlled knitting machines could be programmed to produce patterned fabric which was subsequently used to produce thermal underwear, mainly for ladies vests and pants.
Since we have been dedicated to the production of finest knitted fabrics in top quality. Every year more than 1. All conditions of quality and sustainability are applicable and identical to those at our headquarters. We practice our values of environment protection, resource efficiency, and social responsibility.
Frank R. Spellman , Joanne E. Government Institutes , 1 thg 3, - trang. This comprehensive resource provides engineers, managers, compliance specialists, construction professionals, and students with the tool they need to understand and comply with the requirements of the Code of Federal Regulations CFR Title 40 Chapter stormwater regulations.