WO2023277844A1

WO2023277844A1 - Synthetic fiber opening device

Info

Publication number: WO2023277844A1
Application number: PCT/TR2022/050591
Authority: WO
Inventors: Hayriye Hale AYGÜN; Hatice Kübra ARIKAN
Original assignee: Kahramanmaraş Sütçü İmam Üni̇versi̇tesi̇
Priority date: 2021-06-30
Filing date: 2022-06-14
Publication date: 2023-01-05

Abstract

The present invention relates to a synthetic fiber opening device that, after the production of synthetic-based fibers has been carried out, gives the bundle form possessed by natural-based fibers to synthetic-based fibers in a physical sense, and its characteristic; cylindrical polyethylene chamber (1) with a spring-loaded inner grid (1.1) on the bottom part and a sealed lid (1.2) on the front, compressor gun (2) that contributes to the formation of static electricity by sending pressurized dry air into the polyethylene chamber (1) at regular intervals, It has a pressure meter (3) that measures the amount of pressure applied into the polyethylene chamber (1) and a pressure sensor (4) that allows the compressor gun (2) to cut/send the air flow by sending a signal to the switch after the pressure exceeds/decreases.

Description

SYNTHETIC FIBER OPENING DEVICE Technical Field:

The presented invention it is related to the synthetic fiber opening device, which gives the bundle form of natural-based fibers to synthetic-based fibers in a physical sense after synthetic-based fiber production has been carried out.

State of the Art:

Textile fibers are classified under two main headings: natural and synthetic fibers according to the way they are obtained. Natural-based fibers are obtained from natural sources, and their polymer structure, mechanical and physical characteristics are unique. All natural-based textile fibers, except silk, are supplied from nature in bundles consisting of staple fibers and are then subjected to the processes necessary for yarn production. Synthetic fibers derived from natural sources or modifications to the product that results from the laboratory conditions of the raw material obtained as a result of chemical reactions in additional to artificial monofilament or multifilament fiber production technologies using polymeric form of the structure to be converted to thanks are produced. Natural-based fibers is produced as an alternative to synthetic fibers, low production costs, can be produced in a short period of time, smooth surface to possess properties, the fiber can be adjusted to the characteristics of raw materials during the production of the desired cross-sectional area and good mechanical and chemical resistance compared to natural fibers based because they have produced are widely used. However, in terms of textile surfaces used in the garment industry, in terms of comfort touch and contribute to the formation of static electricity due to inadequate and cannot be used alone instead of natural fibers and natural fibers to be used in the event a blend of the obligation arises. In the production of composite materials, they cannot be used interchangeably in terms of differences caused by structural properties in terms of distribution in the matrix and formation of interphase bonds. In this context, in order to make optimal use of synthetic-based fibers that mimic natural-based fibers, it is necessary to turn to different methods.

Yam production is carried out using the final products obtained from synthetic-based fibers in the form of monofilament or multifilament. These yams can be used alone (for example, sewing thread production), in multiple surface production (for example, in woven or knitted surface production), in combined state (for example, in non-woven surface production, both for surface production and for surface binding ((stitching)), or in the production of new products with a different phase (for example, in composite surface production). The main methods used to obtain multifilament yams are melt spinning, dry spinning, wet spinning and wet spinning.

In that portion of break-spinning apparatus, where sliver is taken in, fibers are separated from it and are conveyed into the spinning chamber, and which includes a shoe which resiliently presses the sliver against a feed roller, the shoe is pivotally mounted on a member through which the sliver is supplied and in which it is condensed, the member is pivotally mounted on the same pivot as the shoe, the shoe has an opening into which projects a channel through which the sliver passes from the condenser member to the feed roller, and the condenser has a groove in the region where the sliver reaches the combing- roller, the width of which decreases in the direction in which the combing roller rotates. In Fig. 1, the feed and combing rollers, respectively and the duct through which the fibers are delivered to the spinning chamber are provided in a housing which has a projecting platform on which is provided a pin (Fig. 3, not shown). On this is pivoted a condenser block which has a tapering duct through which the sliver is fed, and a recess receiving a shoe also pivoted on the pin. The shoe has an opening registering with the outlet of the duct, and a releasable spring-urged pin in a bore in the condenser presses on the shoe to urge the sliver against the feed roller. In the region of the feed and combing rollers the adiacent face of the condenser is correspondingly profiled. Fig. 2 and near the combing roller the condenser has a tapering groove, and an air inlet duct. The feed roller is situated close to the combing roller whereby the feed roller is kept free of fiber laps; the pivoting of the condenser allows the condenser to be swung away to give access to the groove and the two rollers, and to facilitate the introduction of a fresh sliver. Description of the Invention:

The purpose of the system subject to the invention is to provide a device for depicting a method that causes a change in physical form in terms of the ability of synthetic-based fibers to imitate natural-based fibers and the technical equipment necessary for the applicability of this method.

The present invention can be applied to all synthetic-based fibers produced in multifilament form. Thanks to the described study, it will be possible to supply synthetic- based fibers in bundles (the fibers appear in tufts, but each fiber is independent in a tuft), as in natural-based fibers. There are no areas where the relevant invention has already been applied. However, it is obvious that synthetic-based fiber bundles that mimic the physical form of natural-based fibers will find use in many fields such as composite material production, fabric production, and the production of twisted yam from 100% synthetic-based fibers.

There is no current study equivalent to the invention. Since air pressure will be applied by pneumatic systems during application, it can be partially related to the punting technique or air vortex yarn production. By applying air pressure in the Decoupage technique, confusion is created between fibers that have a certain order in longitudinal terms, and the cross-sectional area of the yam is increased by certain intervals. In the production of air vortex yam, the logic of wrapping the fibers around the strip by applying air pressure is essential on the untwisted fiber strip (cer strip) extending in the center. In both examples, pneumatic system components are used, and as a result of the individual behavior of stapel-based fibers, a structure with different properties is obtained from similar ones. However, in the proposal that is the subject of the invention, pneumatic application is made to synthetic-based fibers in the cropped state to separate the fibers and convert the cropped multifilament structure into bundles. Differences between them and equivalents produced in the conventional way should be determined as a result of subjecting yarn, surface or composite materials produced using the end product to instrumental analysis techniques. For example, a polymer-based matrix element should be supplemented with cropped synthetic-based fiber and unfolded synthetic-based fiber under equivalent production conditions, and the mechanical, thermal and electrical properties of the two different composite structures obtained should be compared. As a result of the relevant comparison, it is obvious that the studied properties will differ from each other because the fiber/matrix interface connection has been differentiated.

Description of the Figures:

The invention will be described with reference to the accompanying figures, so that the features of the invention will be more clearly understood and appreciated, but the purpose of this is not to limit the invention to these certain regulations. On the contrary, it is intended to cover all alternatives, changes and equivalences that can be included in the area of the invention defined by the accompanying claims. The details shown should be understood that they are shown only for the purpose of describing the preferred embodiments of the present invention and are presented in order to provide the most convenient and easily understandable description of both the shaping of methods and the rules and conceptual features of the invention. In these drawings;

Figure 1 General perspective view of the system. Figure 2 Rear view of the system. Figure 3 Front view of the system. Figure 4 Sectional view of the system.

The figures to help understand the present invention are numbered as indicated in the attached image and are given below along with their names.

Description of References:

1. Polyethylene chamber

1.1. Spring loaded internal grid 1.2. Sealed lid

2. Compressor gun

3. Pressure meter 4. Pressure sensor

Description of the Invention:

The invention describes a process for modifying the physical form of an existing product. In order to elaborate on this, it is necessary to first consider the existing synthetic fiber production methods. There are three different synthetic fiber production methods currently used. Considering the methods, it is seen that the raw materials to be used have different characteristics. For example, in the melt spinning method, the solid-state polymer is heated at the melting temperature and its viscosity is reduced, and in dry spinning or wet spinning methods, the solid-state polymer is dissolved in the corresponding solvent and then fed to the system. In all three different methods, pressure is applied to the feed raw material, and it is directed to the straighteners, and it comes out of the straighteners in a monofilament state. The monofilaments are assembled together and subjected to surface decking by means of the cylinder at the outlet in multifilament form and fed to tensioning units consisting of multiple cylindrical systems to eliminate variation differences. Structures in the form of multifilament, which are subjected to surface coating treatment, are wound on the coil.

The subject of the invention in our system, provides for the process of opening, unwinding multifilament threads obtained from the above existing methods and directed through rollers. These yams are clipped before the subject of the invention enters our system.

The basic parts that make up our invention system are polyethylene chamber (1), compressor gun (2), pressure meter (3) and pressure sensor (4). It has a polyethylene chamber (1), a spring-loaded internal grid (1.1) and a sealed lid (1.2).

The cropped synthetic fibers are placed in a polyethylene chamber (1) made of polyethylene material and exposed to compressed air by a compressor gun (2). The fibers thrown in the chamber (1) form a static electrification in the chamber (1) and begin to open through this electrification. At this time, the fibers turn into bundles. In this connection, it is important to make the trimming length, the width of the cross-sectional area of the cropped fiber, the application time of compressed air, the effectiveness of the coating agent or spin finish process on the synthetic fiber, and the chamber (1) made of polyethylene, a plastic-based material, to trigger static electricity.

The process steps of the fiber opening method of our system subject to the invention:

• Trimming of synthetic-based filaments,

• Placing the clipped fibers in a chamber (1) made of polyethylene,

• Closing the chamber Sealed lid (1.2),

• Sending air to chamber (1) via compressor gun (2),

• Measurement of the pressure inside the chamber (1) by a pressure meter (3),

• When the pressure rises above 4 bar, the pressure sensor (4) sends a signal to the switch to stop the airflow of the compressor gun (2) or chamber (1). initiating airflow delivery of the compressor gun (2) by sending a signal to the switch in case of insufficient pressure inside,

• During the delivery of compressed air, the clipped filaments hit the walls of the chamber (1) to create a static electric charge and open the fibers,

• It is the collection of unopened fibers at the base of the spring-loaded internal grid (1.1) and their inclusion in the system for reuse.

Critical elements that are important in practice; crop size, the width of the cross sectional area of the fibers cropped, high fiber moisture absorption characteristics of the fibers that are used for the inconvenience during application of nominally compressed air, compressor gun, (2) the necessity of the application of dry air, plastic (TH) made of a material chamber (1) with the use of the static field of the triggering of the size of the reservoir, plastic (TH) chamber (1) to prevent cracking of the membrane, the application of compressed air as the removal of air from the system to be performed at specific intervals are ranked.

Claims

1- The invention is a synthetic fiber opening device, the feature of which is;

— a cylindrical polyethylene chamber (1) with a spring-loaded internal grid (1.1) on the bottom and a sealed lid (1.2) on the front,

— compressor gun (2), which contributes to the formation of static electricity by sending compressed dry air into the polyethylene chamber (1) at ranges of intervals.

— a pressure meter (3) that measures the amount of pressure applied to the polyethylene chamber (1) and

— it has a pressure sensor (4) that allows the compressor gun (2) to cut off/send the air flow by sending a signal to the switch after a pressure exceeded/decreased.

2- As mentioned in claim 1, it is a synthetic fiber opening device, its feature is that it is characterized by having a switch associated with a compressor gun (2) and a pressure sensor (4).

3- As mentioned in claim 1, the pressure sensor is (4) and its feature is that it is characterized by the fact that the switch trigger pressure is 4 bar.

4- Polyethylene chamber (1) is characterized by the fact that it has a spring-loaded internal grid (1.1), which allows it to be stocked on the floor by separating the uncirculated fibers from the clipped fibers.