Cleaning cloth for clean room and method for manufacturing the same

Abstract

The present application relates to the technical field of wiping cloth, in particular to a wiping cloth for clean room and a manufacturing method thereof; PET low shrinkage fiber filaments are selected to cover core filaments and are processed by core-spun processing to prepare core-spun yarn with a composite structure; the processed core-spun yarn is put into a large circular weft knitting machine to obtain a wiping cloth semi-finished cloth; after the semi-finished cloth is washed to remove oil on the surface of the fibers, the semi-finished cloth is steamed by saturated water vapor to obtain a high-density structure cloth; the cloth is sent into a tentering setting machine; the setting finished cloth is cleaned by using ultrapure water as a cleaning medium; laser cutting and edge sealing equipment is used to fuse the edges and corners of the wiping cloth, and the fibers at the edges of the cloth are fused and bonded together; the wiping cloth after laser edge sealing is sterilized and disinfected, sealed and packaged after sterilization to obtain qualified clean room wiping cloth products; the purpose of having a compact structure, not easy to fall off hair and debris, and no loose silk at the edges is achieved.

Description

Technical Field

[0001] This invention relates to the field of wiping cloth technology, and in particular to a wiping cloth for cleanrooms and its manufacturing method. Background Technology

[0002] Cleanrooms are widely used in industries such as semiconductors, biomedicine, and precision electronics manufacturing. Cleanroom wipes are daily cleaning consumables for clean environments.

[0003] Currently, most commercially available cleanroom wipes are made from a single specification of PET fiber, resulting in a loose fabric structure and large internal pores. During use, the fabric easily sheds lint and debris, and the micro-dust generated during wiping can easily adhere to the surface of precision products, causing problems such as short circuits in components, contamination of medicines, and scratches on optical components. Furthermore, the raw fabric of cleanroom wipes relies solely on mechanical compaction, which has limited compaction effect and uneven stress. The fabric gaps can easily trap spinning oils and production dust. The cutting method is cold cutting, which results in loose fibers at the edges and a large amount of loose fibers falling off the edges.

[0004] In conclusion, it is essential to propose a cleanroom wiping cloth with a dense structure, which is not prone to shedding lint and debris, and has no loose threads at the edges, as well as its manufacturing method. Summary of the Invention

[0005] The purpose of this invention is to provide a wiping cloth for cleanrooms and its manufacturing method, which achieves the goal of having a dense structure, not easily shedding lint and debris, and no loose threads at the edges.

[0006] To achieve the above objectives, the present invention provides a cleaning cloth for cleanrooms, comprising a core-spun yarn made of high-shrinkage PET filaments and low-shrinkage PET filaments, wherein the high-shrinkage filaments are used as the core and the low-shrinkage filaments are used as the outer covering.

[0007] This invention provides a method for manufacturing a wiping cloth for cleanrooms, comprising the following steps: PET high-shrinkage fiber filament is selected as the core filament, and PET low-shrinkage fiber filament is used to cover and spin the core filament to prepare a composite core-spun yarn. The processed core-spun yarn is fed into a circular knitting machine and continuously woven using a double rib knitting process to obtain a semi-finished greige cloth for wiping. After washing the fabric to remove the oil from the fiber surface, it is then steamed with saturated water vapor. The outer layer of fibers disperses and fills the gaps by the heat shrinkage of the core yarn, thus producing a high-density structural fabric. The fabric that has undergone steam densification is fed into the tenter frame to simultaneously dry the fabric and shape and fix the fabric surface, thus fixing the fabric's forming structure. Ultrapure water is used as the cleaning medium to clean the shaped fabric and remove dust particles and trace impurities remaining on the fiber surface and in the gaps between the fibers. Laser cutting and sealing equipment is used to fuse the edges of the wiping cloth, melting and bonding the edge fibers of the cloth together. The wiping cloths after laser sealing are sterilized and disinfected. After sterilization, they are sealed and packaged to obtain qualified cleanroom wiping cloths.

[0008] In the step of selecting high-shrinkage PET fiber filaments as the core yarn and using low-shrinkage PET fiber filaments to cover and spin the core yarn to prepare a composite core-spun yarn: The feed weight of low-shrinkage PET filament accounts for 5% to 15% of the total weight of the core-spun yarn after coating, while the boiling water shrinkage rate of high-shrinkage PET filament is controlled at 20% to 50%.

[0009] In the process of washing the grease to remove the oil from the fiber surface, followed by steaming with saturated water vapor, the outer layer of covering fibers disperses and fills the gaps by the heat shrinkage of the core yarn, thus producing a high-density structural grease: Mix pure water and greige fabric at a weight ratio of 10:1, wash at room temperature for 15 minutes, and then steam with saturated water vapor for 3 to 10 minutes.

[0010] In the step of using ultrapure water as the cleaning medium to clean the shaped fabric and remove residual dust particles and trace impurities from the fiber surface and internal fiber gaps: The fabric was repeatedly washed three times with ultrapure water.

[0011] In the step of using laser cutting and sealing equipment to fuse the edges of the wiping cloth, thereby melting and bonding the fabric edge fibers together: The laser sealing fusion temperature is set to 200℃~280℃.

[0012] Among the steps, the sterilization and disinfection treatment of the laser-sealed wiping cloth, followed by sealed packaging after sterilization, yields a qualified cleanroom wiping cloth product: Sterilize with cobalt-60 gamma irradiation in a clean room and then pack flat.

[0013] This invention discloses a cleanroom wiping cloth and its manufacturing method. The raw materials include a core-spun yarn made from a composite of high-shrinkage PET filaments and low-shrinkage PET filaments. The method involves the following steps: selecting high-shrinkage PET filaments as the core yarn, and using low-shrinkage PET filaments to cover and spin the core yarn, thus preparing a composite core-spun yarn; feeding the processed core-spun yarn into a circular knitting machine and continuously weaving it using a double rib knitting process to obtain a semi-finished wiping cloth; washing the cloth to remove surface oils from the fibers, and then steaming it with saturated water vapor, allowing the outer covering fibers to disperse and fill the gaps due to the heat shrinkage of the core yarn, thus obtaining a high-density structure cloth; and then... After steam densification treatment, the greige fabric is fed into a tenter frame, where drying and fabric surface straightening are completed simultaneously to fix the fabric's structure. Ultrapure water is used as the cleaning medium to clean the set greige fabric, removing residual dust particles and trace impurities from the fiber surface and internal fiber gaps. Laser cutting and sealing equipment is used to fuse the edges of the wiping cloth, bonding the fabric edge fibers together. The laser-sealed wiping cloth is then sterilized and sealed to obtain a qualified cleanroom wiping cloth. Through these methods, a dense structure is achieved, making it less prone to shedding lint and debris, and free of loose threads at the edges. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart of the manufacturing method of the cleanroom wiping cloth of the present invention. Detailed Implementation

[0016] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0017] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0018] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0019] The present invention provides a cleaning cloth for cleanrooms, comprising a core-spun yarn made of high-shrinkage PET filaments and low-shrinkage PET filaments, wherein the high-shrinkage filaments are used as the core and the low-shrinkage filaments are used as the outer layer.

[0020] Please see Figure 1 , Figure 1 This is a flowchart of the manufacturing method of the cleanroom wiping cloth of the present invention.

[0021] The present invention also provides a method for manufacturing a wiping cloth for cleanrooms, comprising the following steps: S100: Select PET high-shrinkage fiber filament as core yarn, and use PET low-shrinkage fiber filament to cover and spin the core yarn to prepare a composite core-spun yarn. S200: The processed core-spun yarn is fed into a circular knitting machine and continuously woven using a double rib knitting process to obtain a semi-finished greige cloth for wiping. S300: After washing the fabric to remove the oil from the fiber surface, it is then steamed with saturated water vapor. The outer layer of covering fibers disperses and fills the gaps by the heat shrinkage of the core yarn, thus producing a high-density structural fabric. S400: The fabric that has been steam-densified is fed into the tenter frame to simultaneously dry the fabric and fix the fabric surface, thus fixing the fabric's forming structure. S500: Uses ultrapure water as the cleaning medium to clean the finished fabric, removing dust particles and trace impurities remaining on the fiber surface and in the gaps between the fibers. S600: The edges of the wiping cloth are fused together using a laser cutting and sealing equipment, which melts and bonds the fibers of the cloth edges together. S700: The wiping cloth after laser sealing is sterilized and disinfected. After sterilization, it is sealed and packaged to obtain a qualified cleanroom wiping cloth product.

[0022] Furthermore, in the step of selecting high-shrinkage PET fiber filaments as the core yarn and using low-shrinkage PET fiber filaments to cover and spin the core yarn to prepare a composite core-spun yarn: The feed weight of low-shrinkage PET filament accounts for 5% to 15% of the total weight of the core-spun yarn after coating, while the boiling water shrinkage rate of high-shrinkage PET filament is controlled at 20% to 50%.

[0023] Furthermore, in the step of washing the grease to remove the oil from the fiber surface, and then steaming it with saturated water vapor, the outer layer of covering fibers disperses and fills the gaps by means of the core yarn shrinking under heat, thus obtaining a high-density structural grease: Mix pure water and greige fabric at a weight ratio of 10:1, wash at room temperature for 15 minutes, and then steam with saturated water vapor for 3 to 10 minutes.

[0024] Furthermore, in the step of using ultrapure water as the cleaning medium to clean the finished fabric and remove residual dust particles and trace impurities from the fiber surface and internal fiber gaps: The fabric was repeatedly washed three times with ultrapure water.

[0025] Furthermore, in the step of using laser cutting and sealing equipment to fuse the edges of the wiping cloth, thereby melting and bonding the fabric edge fibers together: The laser sealing fusion temperature is set to 200℃~280℃.

[0026] Furthermore, in the steps of sterilizing and disinfecting the laser-sealed wiping cloth, and then sealing and packaging it after sterilization to obtain a qualified cleanroom wiping cloth finished product: Sterilize with cobalt-60 gamma irradiation in a clean room and then pack flat.

[0027] In this embodiment, firstly, high-shrinkage PET fiber filaments are selected as the core yarn, and low-shrinkage PET fiber filaments are used to cover and spin the core yarn to prepare a composite core-spun yarn. The mass of low-shrinkage PET filaments accounts for 5% to 15% of the total mass of the core-spun yarn after covering, and the boiling water shrinkage rate of high-shrinkage PET filaments is controlled at 20% to 50%. Then, the processed core-spun yarn is fed into a circular knitting machine and continuously woven using a double rib knitting process to obtain a semi-finished greige fabric for wiping. After washing the greige fabric to remove the oil from the fiber surface, it is steamed with saturated steam. The outer covering fibers are dispersed and filled with gaps by the heat shrinkage of the core yarn to obtain a high-density structural greige fabric. Pure water and greige fabric are mixed at a weight ratio of 10:1, washed at room temperature for 15 minutes, and steamed with saturated steam for 3 to 10 minutes. After the steam densification treatment, the greige fabric is fed into the tenter frame, where the drying and fabric surface straightening and shaping are completed simultaneously to fix the fabric's structure. Using ultrapure water as the cleaning medium, the greige fabric is repeatedly circulated and cleaned three times to remove residual dust particles and trace impurities from the fiber surface and internal fiber gaps. Next, a laser cutting and sealing device is used to fuse the edges of the wiping cloth, bonding the fabric edge fibers together. The laser sealing temperature is set to 200℃~280℃. Finally, the laser-sealed wiping cloth undergoes sterilization and disinfection treatment, and is then sealed and packaged to obtain a qualified cleanroom wiping cloth. The wiping cloth is sterilized in a cleanroom using cobalt-60 gamma irradiation and then flat-folded and packaged. This process achieves a dense structure, preventing the shedding of lint and debris, and eliminating loose threads at the edges.

[0028] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0029] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A wiping cloth for cleanrooms, characterized in that, It includes core-spun yarn made of high-shrinkage PET filament and low-shrinkage PET filament, with the high-shrinkage filament used as the core and the low-shrinkage filament used as the outer covering.

2. A method for manufacturing a cleanroom wiping cloth, as described in claim 1, characterized in that, Includes the following steps: PET high-shrinkage fiber filament is selected as the core filament, and PET low-shrinkage fiber filament is used to cover and spin the core filament to prepare a composite core-spun yarn. The processed core-spun yarn is fed into a circular knitting machine and continuously woven using a double rib knitting process to obtain a semi-finished greige cloth for wiping. After washing the fabric to remove the oil from the fiber surface, it is then steamed with saturated water vapor. The outer layer of fibers disperses and fills the gaps by the heat shrinkage of the core yarn, thus producing a high-density structural fabric. The fabric that has undergone steam densification is fed into the tenter frame to simultaneously dry the fabric and shape and fix the fabric surface, thus fixing the fabric's forming structure. Ultrapure water is used as the cleaning medium to clean the shaped fabric and remove dust particles and trace impurities remaining on the fiber surface and in the gaps between the fibers. Laser cutting and sealing equipment is used to fuse the edges of the wiping cloth, melting and bonding the edge fibers of the cloth together. The wiping cloths after laser sealing are sterilized and disinfected. After sterilization, they are sealed and packaged to obtain qualified cleanroom wiping cloths.

3. The method for manufacturing a cleanroom wiping cloth as described in claim 2, characterized in that, In the step of preparing a composite core-spun yarn by selecting high-shrinkage PET fiber filaments as the core yarn and using low-shrinkage PET fiber filaments to cover and spin the core yarn: The feed weight of low-shrinkage PET filament accounts for 5% to 15% of the total weight of the core-spun yarn after coating, while the boiling water shrinkage rate of high-shrinkage PET filament is controlled at 20% to 50%.

4. The method for manufacturing a cleanroom wiping cloth as described in claim 2, characterized in that, In the process of washing the greige fabric to remove the oil from the fiber surface, and then steaming it with saturated water vapor, the outer layer of covering fibers disperses and fills the gaps by the heat shrinkage of the core yarn, thus producing a high-density structural greige fabric: Mix pure water and greige fabric at a weight ratio of 10:1, wash at room temperature for 15 minutes, and then steam with saturated water vapor for 3 to 10 minutes.

5. The method for manufacturing a cleanroom wiping cloth as described in claim 2, characterized in that, In the step of using ultrapure water as the cleaning medium to clean the shaped fabric and remove residual dust particles and trace impurities from the fiber surface and internal fiber gaps: The fabric was repeatedly washed three times with ultrapure water.

6. The method for manufacturing a cleanroom wiping cloth as described in claim 2, characterized in that, In the step of using laser cutting and sealing equipment to fuse the edges of the wiping cloth, the fabric edge fibers are melted and bonded together: The laser sealing fusion temperature is set to 200℃~280℃.

7. The method for manufacturing a cleanroom wiping cloth as described in claim 2, characterized in that, The steps involved in sterilizing and disinfecting the laser-sealed wiping cloth, followed by sealing and packaging to obtain a qualified cleanroom wiping cloth product are as follows: Sterilize with cobalt-60 gamma irradiation in a clean room and then pack flat.

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