ES2906867T3 - Velvet fabric weaving procedure - Google Patents

Abstract

A method of weaving velvet fabric (100) comprising the steps of: - mixing commercially available fibers comprising knots used in pile yarns with a textile fiber composed of natural, synthetic, regenerated fibers or a mixture thereof and converting them into slivers when processing them on a carder (101), - activating a draw frame to de-roughen the slivers coming out of the carder and to splice pieces of cotton into slivers coming out of the carder with the sliver knots and mixing them in a main material (102), - Activate a roving frame to thin the mixture of cotton into ribbon and draw frame knot from the draw frame and subject it to a twisting process, thus obtaining ropes (103), - Activate a ring machine to obtain yarn by thinning the yarns from the main blend of roving fibers and knots by drawing and winding the yarn on the bobbin with tapered ends (104), - t knitting a raw fabric with needles that rotate with the up and down movement of said needles provided in a double-cylinder circular knitting machine (105), - weaving a pile yarn and a ground yarn by passing them through the needles in different cylinders (106), - placing the pile yarn on the backing of the fabric to be sheared and then shearing it, thus obtaining a pile fabric (107), - activating a fixing machine to fix the produced yarn and to stretch the pile fabric under hot air to avoid electrostatic generation (108), and - dyeing the pile fabric (109), so that the velvet fabric weaving method (100) is characterized in that it further comprises the steps of - activating a centrifugal dryer for drying the pile fabric by contact with hot air (110), - spin the dyed fabric at at least 4550 rpm in the centrifugal dryer (111), to avoid sinking from knotting effects, - smash the pile yarns of the pile fabric to make it into a velvet fabric by making the closed loops open from a blade distance of at least 1.8 mm from the top of the piles (112), and - passing the velvet cloth dyed and melted through a stretcher to dry it (113), and thus obtain a velvet cloth.

Description

DESCRIPTION

Velvet fabric weaving procedure

field of invention

The present invention relates to a process for producing velvet (flour yarn) knitted (fluffy) fabric which is produced on circular knitting machines by the plush knitting technique and which is then processed to look like velvet.

Background of the invention

A fabric is a covering surface constructed by joining threads through various procedures. It is obtained from threads made from natural textile fibers such as cotton, wool, silk, linen, etc. and synthetic, regenerated textile fibers or mixtures thereof. Weaves are constructed by passing threads that are perpendicular and parallel to each other from below and above each other.

Today, on circular knitting machines, the needles are arranged side by side in the needle grooves provided in the circular (tubular) needle plates. They are machines that carry out the fabric by moving the needles that move in the grooves during the circular movement of the needle plate independently with the help of the locking mechanisms that are immobile in the needle plate and grooves and that give movement to the needles and by placing suitable fixed threads on it. The knitting operation is carried out by the needles that are arranged at certain intervals around the needle plate, making circular movements all together while receiving the appropriate movement from the fixed locking systems that form loops by pulling the threads laid on them.

One of the types of fabric produced is pile terry, which is produced using the terry cloth production technique on circular weaving machines and is then cut to have a smooth surface with fine piles that give it a velvety appearance.

In applications of the technique, light effects and surface patterns are obtained on some nylon velvet fabrics, although this is rare; however, they are provided to some extent of a synthetic material (nylon, etc.). Artificial textile fibers are required to achieve such an effect. The processes of pattern formation and effect creation in velvet fabrics cannot be achieved using a single yarn on simple circular knitting machines.

International patent application WO2014106858 discloses a process for manufacturing a fabric comprising; combining or blending wool with one or more textile fibers to form yarn; weaving or knitting using the obtained yarn as at least one of the components; and removing the yarn by dissolving it to form air voids. Said application does not provide a means of producing velvet fabric.

However, in state-of-the-art applications, jacquard plush knitting machines are used to produce patterns on velvet fabric, and the colors obtained in this production process cannot reflect light from different angles.

Problems solved with the invention

The object of the present invention is to provide a method for producing velvet fabric having a mixture of materials and a reflection effect by performing a different shearing method on the roving (roving fabric/plush fabric roving instead of fleece fabric) without making any changes to the fabric construction. To do this requires weaving two different yarns into a terry construction on a double platen circular knitting machine. After a plush weaving process made with different threads, the surface becomes velvet fabric through a shearing process. By means of the present invention, light effects and episodic patterns are achieved without applying any printing process and/or using jacquard circular knitting machines. Such progress is achieved through the production of ring-spun yarn from different material mixtures and its use as a pile yarn in the production of velvet fabric.

Detailed description of the invention

The process for the production of velvet fabric fabrics developed to meet the objective of the present invention is illustrated in the attached figure, in which;

Figure 1 is a schematic view of the velvet fabric weaving process.

The steps in the figures have reference numbers as follows:

100. Velvet fabric weaving procedure

101. Mix the fibers (commercially available) comprising knots used in pile yarns with a textile fiber composed of natural, synthetic, regenerated fibers or a mixture thereof and convert them into ribbons by processing them in the carding machine,

102. Remove the roughness of the slivers coming from the carding machine and splice the cotton pieces into slivers with the sliver knots and activate the draw frame to mix them with the main material,

103. Activate the roving frame to thin the cotton blend and draw frame tape knot coming from the draw frame and subject it to a false twisting process,

104. Activate the ring machine to obtain thread by thinning the cords from the cotton mixture and the roving knot by stretching and winding the thread on the bobbin with conical ends, 105. Weave the raw fabric with the needles that rotate with the up and down motion of the provided knitting needles on the double plate circular knitting machine,

106. Weave the pile thread and the bottom thread passing them through the needles on different plates,

107. Place the pile thread on the backing of the fabric to be knitted and then knitted,

108. Activate the fixing machine to fix the produced yarn and stretch the plush fabric under hot air to avoid electrostatic generation,

109. Dye plush fabric,

110. Activate the spin dryer to dry the plush fabric by contact with hot air,

111. Rotate the dyed fabric at least 4550 revolutions to avoid sinking knot effects in the terry cloth machine,

112. Weaving the pile threads of the terry cloth to make it a velvet cloth by making the closed loops open from a blade distance of at least 1.8 mm,

113. Pass the dyed and crushed velvet fabric through the stretcher for drying.

In the method of weaving velvet fabric 100 of the present invention, knotted tape fibers (fiber bundles that can include fibers of different thicknesses and lengths and that can create a three-dimensional effect in the main fiber tape or yarn to which they are incorporated by being together) used in pile yarn are mixed with staple fibers and made into ribbons by being processed in the carder (101), and the carder is the machine in which the cotton fiber is converted into ribbons coarse when passing through rotating cylinders with needles.

The knotted fibers used in the pile yarn are mixed with textile fibers made up of natural, synthetic, regenerated fibers such as cotton, wool, silk, linen, etc. or a mixture thereof and are converted into ribbons when processed in the carding machine.

To obtain the knotted effect yarn used in pile yarn, the knotted fibers are mixed with the main fiber and made into slivers by processing in the carding machine and the knotted carding slivers of the knotted effect yarn with the staple fibers in the draw frame.

The draw frame is used to roughen the slivers coming from the carder and splice the sliver cotton pieces coming out of the carder crosswise with the sliver knots and mix them with the main material (102). The knots are mixed with the main material as double material injection or feeding during the spinning process, knot carding process, draw frame process or spinning process.

The roving frame is activated to thin the draw frame sliver and knot cotton blend from the draw frame and subject it to the twisting process (103). After the draw frame process, the cotton/knot blend is shaped into its finest ribbon on the roving frame. These fine ribbons are spun on the ring machine. Said ring machine is activated to obtain yarn by thinning the cords from the mixture of cotton and knot of the roving frame by drawing and to wind the yarn on the bobbin with tapered ends (104). Therefore, the main material undergoes the carding process and the mixing process with the knotted sliver is done on the draw frame. Mixing is enabled during the stretching process.

The draw frame is activated to obtain a homogeneous sliver by splicing the yarn slivers transversely by means of folding to clean the fluff formed during the stretching process.

The greige fabric (circular terry cloth), which is composed of pile yarn and ground yarn, is knitted with needles that rotate with the up and down motion of the provided knitting needles on the double circular knitting machine. license plate.

The pile yarn and the ground yarn are woven by passing them through the needles in different plates (106). Filament yarn or clipped yarn is used, which ensures the strength of the fabric backing. (filament yarns; continuous yarns composed of natural, synthetic, regenerated yarns or mixtures thereof or ring yarns composed of staple fibers or open end yarns composed of staple fibers or air jet yarns composed of staple fibers).

The unbleached fabric is processed in the AIRO machine, in which processes of shearing (to open the closed ends of the pile threads), prefixing, exhaust dyeing, spinning (drying), widening and quality control are carried out on the fabric. crude.

In the shearing process, the pile yarn is placed on the backing of the shearing fabric and is then sheared (107). During the production of velvet fabric, the pile yarn and the ground yarn are woven by passing them separately through the needles on two different plates. The fabric backing, which is also known as the rear side of the fabric, is the flat, non-pile surface of the velvet fabric that is generally made up of filament yarns (polyester and nylon are often selected to provide strength).

According to the invention, a fixing machine is activated to fix the produced yarn and stretch the plush fabric under hot air to prevent electrostatic generation (108). The fleece fabric is dyed (109) and then the spin dryer is activated to dry the fleece fabric in contact with hot air (110).

After the greige fabric is produced on the double-plate circular knitting machine, the finishing process in the construction of the terry cloth begins. The fabric rotates together with the hot air in the tumble dryer a specific number of revolutions and the dyed fabric rotates at least 4550 revolutions to avoid sinking knot effects in the plush tumble dryer (111). The purpose of the increase in the number of revolutions in the toulon machine is to ensure that the knots in the pile yarn remain more upright and forceful.

The 2nd shearing is done on the pile yarns of the plush fabric to make it a velvet fabric by making the closed loops open from a blade distance of at least 1.8 mm (112). Velvet circular knit fabric is a version of plush circular knit fabric prior to the shearing process.

After the shearing process, the closed loops of the pile strands open up and become open ends. The purpose of increasing the distance is to prevent the blades from shearing the fabric surface too much. Shearing by a certain distance difference prevents knotting effects in the fabric from sinking in the spin dryer.

The dyed and melted velvet fabric is passed through the stretcher to dry (113). The velvet fabric finally constructed is subjected to several quality control processes (114).

The weight of the fabric (g/m2) varies according to the area of use. The numbers of ground thread and pile thread vary depending on the weight of the fabric.

By means of this invention, a velvet fabric with a different material mix and reflection pattern effect is obtained without making any changes to the construction of the fabric. A fuller, softer feel is provided by the different blends of materials and compositions used in the invention.

According to the invention, fiber blends comprising natural, synthetic or regenerated fibers such as viscose, cotton, polyester, nylon, linen, wool or blends thereof are used.

A shiny fiber that provides a soft touch can also be used.

Filament yarn can be produced from synthetic materials that allow high strength, such as polyester, nylon, etc.

Many types of needles can be used, such as a single-ended needle or a 4-ended needle.

In an embodiment of the invention, when the process of carding textile fibers composed of natural, synthetic, regenerated fibers, such as cotton, silk, linen, etc., or mixtures thereof, is carried out in the carding machine at low rpm of the drum (preferably less than 300 rpm) by increasing the distance between the turntable and the drum (the starting point is more than 35 mm), effects similar to the effects of tape knots are obtained. The knotted slivers obtained with this procedure may or may not be mixed with different textile fibers in the draw frame. Therefore, the decision to mix depends on the desired number of knots in a unit area in the final fabric.

Claims (3)

1. A method of weaving velvet fabric (100) comprising the steps of: - mixing commercially available fibers comprising knots used in pile yarns with a textile fiber composed of natural, synthetic, regenerated fibers or a mixture thereof and turning them into ribbons by processing them in a carding machine (101), - activating a draw frame to roughen the slivers coming out of the carder and to splice cotton pieces in slivers coming out of the carder with the knots of the sliver and mix them into a main material (102), - activating a roving frame to thin the cotton mixture in tape and knot of the draw frame coming from the draw frame and subjecting it to a twisting process, thus obtaining ropes (103), - activating a ring machine to obtain yarn by thinning the yarns coming from the main mixture of fibers and knots of the roving frame by drawing and winding the yarn in the bobbin with conical ends (104), - knitting a greige fabric with needles that rotate with the up and down movement of said needles provided on a double-cylinder circular knitting machine (105), -weave a pile thread and a bottom thread by passing them through the needles in different cylinders (106), - place the pile thread on the back of the fabric to be knitted and then knitted, thus obtaining a pile fabric (107), - activating a fixing machine to fix the yarn produced and to stretch the pile fabric under hot air to prevent electrostatic generation (108), and - dyeing the pile fabric (109), so that the velvet fabric weaving process (100) is characterized in that it also comprises the steps of - activate a centrifugal dryer to dry the pile fabric by contact with hot air (110), - spin the dyed fabric at at least 4550 revolutions per minute in the spin dryer (111), to avoid sinking knot effects, - weaving the pile yarns of the pile fabric into a velvet fabric by making the closed loops open from a blade distance of at least 1.8 mm from the top of the piles (112), and - passing the dyed and sheared velvet fabric through a stretcher to dry it (113), and thus obtaining a velvet fabric. 2. A method of weaving velvet fabric (100) according to claim 1, wherein said textile fiber is selected from the group of natural or synthetic or regenerated fibers such as viscose, cotton, polyester, nylon, linen, wool, silk fibers or mixtures of fibers composed of mixtures thereof. 3. A method of weaving velvet fabric (100) according to claim 1, in which the step of obtaining knot effects of the tape is carried out when the process of carding textile fibers selected from natural fibers is carried out, synthetic, regenerated such as cotton, silk, linen, etc. or mixtures thereof in the carding machine at a drum speed of less than 300 rpm and the distance between the turntable and the carding cylinder is greater than 35 mm.