摘要:
According to an aspect of the present disclosure, a color sensor is provided for sensing whether a ground roller in a corona treatment system needs to be serviced. The color sensor is capable of detecting imperfections which have changed the reflectance level of the ground roller from a predefined level. According to another aspect of the present disclosure, if a determination is made that the ground roller needs to be serviced, then an alarm is activated and/or the operation of the corona treatment system is ceased.
摘要:
Embodiments of the present invention provide methods for achieving a pigment dye look and articles produced by same. In some embodiments, a method of dying knit fabrics includes treating a knit fabric with a cationic agent to add a positive charge to the knit fabric; and contacting the treated knit fabric with a negatively charged direct dye, wherein the direct dye adherence to the knit fabric is improved, with more uniform coloring and improved transfer resistance, while minimizing dye over-penetration, with reduced direct dye usage. In some embodiments, the method may further include cutting and sewing the dyed knit fabric to form a garment; and washing down the cut and sewn dyed knit fabric to produce a garment.
摘要:
A non-woven fabric with melange-type visual appearance and endowed with high-durability comprising a fiber part and a matrix binder characterized by the binder matrix being a polyurethane characterized by the presence of soft segments and rigid segments, the former constituted from mixtures of polycarbonate-polyols and polyester-polyols, and the latter, from urethane groups deriving from the reaction of isocyanates with ureic polyols, and groups deriving from the reaction between the free isocyanate groups and water, and the fiber part comprises a fiber of melange appearance that is a mixture of two or more fibers with different dyeability characteristics.
摘要:
A process for obtaining an aged or faded effect on garments made of protein fibres such as wool, cashmere and silk comprises the following steps: introduction into a tumbler of a plurality of granules of inert materials, which are particularly light in order not to damage the very fine fibres of which the garments are made, the garments being previously imbibed with a chemical product for inhibiting dyeing of the fabric, of the type commonly referred to as “dye retardant”; the tumbler being pre-arranged in order not to cause migration of the aforesaid chemical product through holes or openings; introduction of the raw confectioned garments, whether jerseys or outerwear, that are to undergo treatment into the aforesaid tumbler; extraction of the garments from the tumbler at the end of migration of the chemical product for inhibiting dyeing of the outer surface of the garments by the granules, and steaming in autoclave to fix the chemical process, i.e., the product for inhibiting dyeing of the outer surface of the garments; and subsequent dyeing of the garments with a specific selection of dyes that must each time be defined according to the desired result.
摘要:
A non-woven fabric with melange-type visual appearance and endowed with high-durability comprising a fiber part and a matrix binder characterized by the binder matrix being a polyurethane characterized by the presence of soft segments and rigid segments, the former constituted from mixtures of polycarbonate-polyols and polyester-polyols, and the latter, from urethane groups deriving from the reaction of isocyanates with ureic polyols, and groups deriving from the reaction between the free isocyanate groups and water, and the fiber part comprises a fiber of melange appearance that is a mixture of two or more fibers with different dyeability characteristics.
摘要:
A process for producing printed articles which comprises forming an under coat on a cloth having a rough surface with a foamed composition of a resin emulsion by printing, drying the formed under coat, forming a top coat on the dried under coat by printing and drying the formed top coat. In accordance with the process, cloths having a rough surface such as frieze cloths, pile cloths, knit cloths, towel cloths, felt cloths and blanket cloths can be printed while the proper feel of the cloth is maintained and printed articles having excellent fastness and appearance are obtained.
摘要:
A method is disclosed for permanently patterning a textile fabric with a visually pleasing random-appearing network of line segments, as well as the fabrics produced thereby. The fabric is preferably calendered on at least one side, then packed into a heated chamber via a multi-stage folding or pleating process. The packed fabric is retained in the heated chamber a sufficient time to heat set the network of creases generated by the packing process. The fabric may then be dyed; creased portions of the fabric appear more saturated with dye.
摘要:
The process of protecting heat sensitive regions of textile material webs from damage during thermo-treatment by preliminarily subjecting such regions to a suitable cooling or chilling agent selectively applied to such regions in order to lower the temperature thereof sufficiently so that the ultimate elevation caused by the normal subsequent thermo-treatment will not be adequate to bring about damage to the heat sensitive regions.
摘要:
A first dye is applied to spaced regions of a tufted carpet and a second dye is then applied to a substantially larger area of the dye including the spaced regions covered by the first dye. The second dye is absorbed by the carpet in the regions outside of the already dyed regions. But the second dye has a viscosity sufficiently lower than the viscosity of the first dye that the fibers in the spaced regions are substantially masked from and substantially do not absorb the second dye. The carpet is then steamed to fix the dyes to the yarn.The present invention relates to the dyeing of textile materials especially carpeting with a multi-color dye.A multi-color dyeing carpet process includes various carpet dyeing apparatuses arranged in a line for sequentially depositing dyestuff on a continuously moving carpet material. One such dyeing apparatus is disclosed in my copending application Ser. No. 661,396, filed Feb. 25, 1976, and assigned to the assignee of the present invention. Disclosed therein is a process including a TAK head for depositing droplets of the dyestuff on the carpet tufts. The TAK head includes two separate TAK head dye depositing mechanisms hereinafter referred to as TAK heads 1 and 2 for depositing first and second different dyes sequentially to the carpet tufting as it passes beneath the TAK heads. The TAK heads are a conventional apparatus disclosed in more detail in U.S. Pat. Nos. 3,683,649; 3,800,568; 3,726,640 and 3,731,503. The TAK head is an apparatus for dispersing dyestuff droplets onto upstanding tufts of carpet or other textile material. While carpet is disclosed in the preferred embodiment it will be equally apparent that other textile materials can also be dyed with the instant invention.A second dyeing apparatus is in-line with the TAK head downstream from the two dye depositing mechanisms for depositing a continuous dye film of a width equal to that of the carpet as it continuously moves beneath the film. This apparatus comprises a dye pan in which is immersed a roller of the same width as the carpet. A doctor blade picks the dye off the rotating roller and deposits the dye in a moving film onto the upstanding tufts of the carpet passing beneath the doctor blade. This applicator manufactured by the Kuster Company is known in the carpet industry as a "Kuster" applicator. This applicator, which is third in the line, is positioned downstream from the TAK heads 1 and 2 at the same level with and just prior to a steamer unit for fixing the dyes to the carpet. These particular apparatus are well-known in the carpet dyeing field and need not be described in detail herein.A process embodying the invention for dyeing a carpet or other textile material may employ apparatus similar to that described above. However, as contrasted to prior methods, in the present process first a relatively viscous dye is deposited on spaced regions of the material and then a substantially less viscous dye is employed for regions which include the spaced regions.In wide spread use are nylons and other synthetic materials as yarns for fabrication of carpet tufting. Acid dyes are most satisfactory with nylon materials. These dyes are water soluble and may have a PH of about 3. These acid dyes have a water carrier and are thickened with a vegetable gum for providing the desired viscosity for the fluid. Chemicals forming the coloring of a given dye solution can be formulated from primary coloring chemicals in any desired proportion to form a given color. The listing of commercially available acid dyes may be found in a magazine, Textile Chemists and Colorists, July, 1976, Volume 8, No. 7A, published by the American Association of Textile Chemists and Colorists, (AATTC). The acid dyes are noted in table 4, pages 73-78. A particular color is formulated by selecting a number of the colors that are commercially available, mixing them in a given desired proportion with a desired volume of water, and a vegetable gum base to form a liquid dye solution. The mixing of three primary colors for example, yellow, red and blue in different proportions produces any desired color in accordance with those selected proportions. The formulation of each such dyes are well known. The manufacturer of the particular colors are listed in the aforementioned magazine.In carrying out the process of the present invention, the two TAK heads 1 and 2 are loaded with a relatively viscous first and second dyes, of the same or different colors while the downstream Kuster dye applicator is loaded with a relatively lighter, less viscous third dye. In practice, the viscosity of the first and second dyes dispersed in scattered areas over the carpet surface in droplets by the upstream TAK heads 1 and 2 is preferably in the range of 400 to 20,000 centipoise (CPS) while the viscosity of the third dye in the Kuster applicator is about 1/100 of this value. While the first and second dyes in the preferred embodiment are applied to the upstanding carpet tufts in scattered droplets, these dyes may instead be deposited by some other form of applicator such as a print roller, as an example. While the dyes disclosed herein are water soluble acid dyes, for use with nylon yarns, it should be understood that for other materials, other types of dyes that are suitable for these materials may be used instead. Generally, the third dye applied by the Kuster applicator is deposited as a film that has a viscosity in a range from 5 to 10 CPS while the first and second have a viscosity of about 600 CPS. The first, second and third dyes are made of compatible chemicals and carrier mediums.In practice a minimum difference of viscosity of about 100 to 1 between the first and second dyes and the third dye results in optimum rejection of the third dye by yarns initially dyed with the first and second dyes. Since the dyes are compatible and can blend together if at the same viscosity, then as the viscosities of the first and second dyes as compared to the third dye come close to one another, in value, the yarn dyed with the first and second more viscous dyes becomes more receptive to the third thinner dye. Therefore, various degrees of receptivity of the third dye by yarns dyed with the first and second dyes can be provided by setting the viscosity ratio at some desired value less than 1/100. Such ratios provide various degrees of blending of one dye with the other if such an effect is desired.Any number of different dyes can be applied sequentially. In the preferred embodiment, the two TAK heads 1 and 2 are loaded with dyes of the same viscosity while the third downstream Kuster applicator applies a dye of much lower viscosity. However, in the alternative, there can be single TAK head for applying the more viscous dye upstream of the less viscous dye Kuster applicator. Further, print rollers can be used with or in place of one or both the TAK heads or the Kuster applicator. Thus, many permutations of applicators in type and number can be provided. The only sequence which is of significance is that the more viscous dye be applied over certain portions of the carpet and the less viscous dye be applied subsequently over the carpet areas including the portions dyed with the more viscous dye. The less viscous dye has little or no dying effect on the yarns saturated with more viscous dye. Due to the randomness of the application of the dye by a TAK head, some yarns may not be completely saturated with the more viscous dye. These yarns will be receptive to both dyes. That is, some yarn strands which, for example, only receive a relatively small dye droplet of the more viscous dye may take up and be affected by the later applied less viscous dye. Such strands, after the dyes are fixed, will be multi-colored.Preferably, the carpet is pre-treated prior to application of any of the dyestuff. But this is optional. Pre-treatment may include pre-steaming the carpet and then submerging it in a water solution containing a chemical wetter such as ethoxylated aliphatic alcohol with or without acid or with or without an alkaline. The carpet then may be squeezed to a "wet pick-up" preferably between 50 to 150 percent of the water and chemical wetter solution. Other ranges of pick-up can be used in accordance with a particular process sequence. The expression "wet pick-up" refers to the weight of liquid in a piece of textile material compared to the dry weight of that piece of textile material.What is significant in the practice of the method embodying the invention is the relative viscosities of the dyes sequentially applied to carpet tufts. The later applied dye must be of substantially lower dye viscosity than the earlier applied dye. The manner of applying the dye is not critical. It is the difference in dye viscosities which results in the lower viscosity subsequently applied dye not being accepted by the dye impregnated areas of the tufts covered with the initially applied more viscous dye. That is, there is substantially no visably effective absorption of the low viscosity dye by those yarns which are impregnated with the higher viscosity dye. Therefore, no care need be taken to provide registration of the second dye only in areas not covered by the first dye. In fact, very pleasing coloring affects are achieved by saturating the entire carpet with a film or sheet of the subsequently applied low viscosity dye to provide a background color whereas the earlier applied high viscosity dye provides a patterned coloring effect. Ordinarily dyes of the same viscosity and similar composition would tend to mix resulting in two subsequently applied dyes to the same carpet tufts mixing and blending and destroying the color of each of the dyes as an individual separate color. As provided in accordance with the present invention the applying of a significantly more viscous dye initally in selected areas of the carpet tufts and then subsequently applying the thinner less viscous dye to the entire carpet provides a full range of coloring effects not heretofore possible.Subsequent to applying the relatively thin last applied dyestuff to the carpet, the carpeting is transported into a steamer apparatus suitable for the particular dye technique. The steamer apparatus fixes the dye to the carpeting and washes away undesirable matter accumulating in the dyeing process. The fixing of the dye is conventional.
摘要:
A DIFFICULT DYEABLE MATERIAL OR FABRIC IS RENDERED READILY DYEABLE BY CAUSING ADHERENCE TO THE SAME OF A DYEABLE POWDER, FOR EXAMPLE, BY FUSING THE POWDER TO THE SURFACE OF THE MATERIAL OR FABRIC BY HEAT AND/OR PRESSURE. IN ONE EMBODIMENT A CARPET BACKING MADE OF NONWOVEN POLYPROPYLENE IS RENDERED DYEABLE BY DEPOSITING A DYE RECEPTIVE POLYESTER OR POLYAIDE OR OTHER MATERIAL ON ONE OR BOTH SIDES OF THE FABRIC AND FUSING THE POWDER TO THE SURFACE AS HEREIN DESCRIBED.