Method for manufacturing a polyester fine fabric having a thin thickness and a smooth surface

Abstract

The present invention is a method for manufacturing a thin and flat-surfaced polyester fine fabric, which is made by metal plating the surface of the fabric so that it can be used in precision electronic products such as semiconductors, and the fabric has a thickness in the range of 10 to 12 μm, and the front and back surfaces of the fabric are flat and smooth, so that no irregularities are detected by sight or touch.

Description

Technology Field

[0001] The present invention is a method for manufacturing a polyester fine fabric in which metal plating is applied to the surface of the fabric so that it can be used in precision electronic products such as semiconductors, the thickness of the fabric is thin in the range of 10 to 12 μm, the front and back surfaces of the fabric are flat and smooth, and no irregularities are detected by sight or touch. Background Technology

[0003] In the present invention, the statement that no irregularities are detected by sight or touch refers to a fine state in which the front and back surfaces of the processed fabric are flat and smooth, so that irregularities are not prominent.

[0004] Conventional polyester fine fabrics are woven by selecting polyester monofilaments with warp and weft thicknesses in the range of 8.5 to 9.0 μm, so the thickness of the part where the warp and weft intersect exceeds 17 μm, resulting in a thick fabric. Consequently, the step difference at the warp and weft joint is large, causing large uneven marks to form. Even after tentering, the uneven marks are not reduced, and even after metal plating, the surface is not flat and the uneven marks do not appear prominent, causing inconvenience that makes it difficult to use in precision electronic products such as semiconductors. The problem to be solved

[0006] The present invention was developed to resolve the above inconvenience. means of solving the problem

[0008] The present invention is intended to manufacture a fine fabric in which the thickness of the warp and weft yarns forming the fabric is fine, so that the step difference at the intersection of the warp and weft yarns appearing in the processed fabric is small and marks do not stand out, and the thickness is thin in the range of 10 to 12 μm, so that when metal plating is applied, the front and back surfaces are flat and uneven marks do not stand out.

[0009] To this end, the present invention comprises a warp and weft preparation step in which a polyester composite yarn (a) in which a number of strands of fine polyester monofilaments having a certain thickness are spun so as to be embedded in parallel within a modified polyester melted yarn having a certain thickness is manufactured by spinning, and the number of strands of fine polyester monofilaments combined within the modified polyester melted yarn is selected as the warp (1) and weft (2) of the fabric to be woven;

[0010] A warp warping step for supplying warp by arranging prepared warp threads at regular intervals to maintain a constant width in the warping section of a loom, such as an air jet or water jet, and warping 5 to 10 strands of side warp threads made of polyester monofilament with a diameter of 0.03 mm each on the left and right sides of the warped warp threads, and supplying two warp threads to a body hole;

[0011] A fabric weaving step in which a weft supply unit is installed on one side perpendicular to the warp direction, and the weft is supplied to the warp and the warp for the side using a weft feeder installed in the weft supply unit, and the weft is combined with the warp and the warp for the side by cutting the side of the weft supply unit when the end protrudes to the opposite side of the supply unit, and a body needle is applied;

[0012] A fine polyester separation step in which the woven fabric is immersed in hot water at 85–90°C for 30–60 minutes to dissolve the modified polyester melted yarn portion and separate the fine polyester monofilament yarns bound to the modified polyester melted yarn one by one;

[0013] A fabric washing step in which fine polyesters are separated one by one to form warp and weft yarns, the fabric is placed in a washing tank and shaken to remove dissolved yarn residue remaining on the fabric;

[0014] A fabric thickness establishment step in which the upper and lower surfaces of a fabric from which dissolved yarn residue has been removed are pressed to arrange the fine polyester monofilaments forming the warp in an orderly manner in the warp direction and the fine polyester monofilaments forming the weft in an orderly manner in the weft direction, thereby interlacing multiple strands of warp and multiple strands of weft to form a plain weave fabric, so that the thickness of the fabric becomes 0.02 mm;

[0015] A tentering step in which a fabric sheet established with a thickness of 0.02mm is fed into a tenter machine to flatten the fabric sheet and perform tenter processing so that the thickness of the fabric sheet becomes 0.01mm;

[0016] A method for manufacturing a polyester fine fabric, comprising the step of cutting off the selvage portion of a tenter-processed fabric to obtain a polyester fine fabric with a thickness of 0.01 mm and a flat front and back surface.

[0017] The composite spinning method described in this invention is a composite spinning method currently used by companies to manufacture polyester composite yarns, so a detailed description is omitted.

[0018] Meanwhile, the present invention manufactures a polyester composite yarn by selecting the modified polyester melted yarn constituting the polyester composite yarn (a) such that its outer diameter is in the range of 0.025 to 0.03 mm, selecting the fine polyester monofilament such that its outer diameter is in the range of 0.005 to 0.006 mm, and selecting 8 strands of fine polyester monofilament to be included in the modified polyester melted yarn, thereby producing a fine fabric with a fabric thickness in the range of 10 to 12 μm. Effects of the invention

[0020] The polyester fine fabric of the present invention, manufactured in this manner, is produced by manufacturing a polyester composite yarn (a) in which eight strands of fine polyester monofilament with a diameter of 0.005 mm are embedded within a modified polyester melted yarn with a diameter of 0.025 mm during the step of forming warp and weft yarns, and then weaving the fabric so that a fabric with a thickness of 0.05 mm can be woven during the weaving step. When the woven fabric is immersed in hot water at 85 to 90°C for 30 to 60 minutes, the modified polyester melted yarn portion melts, releasing the restraint of the fine polyester monofilaments. Consequently, the fine polyester monofilament yarns embedded within the melted yarn become separated one by one, so that the warp and weft yarns are interwoven with eight strands of polyester monofilament arranged side by side, thereby obtaining a fabric. When this is washed and drawn out and the upper and lower surfaces of the fabric are pressed, the eight strands of fine polyester monofilaments forming the warp and weft yarns spread out side by side, and the thickness of the fabric is It is possible to form a fabric sheet with a thickness of 0.02 mm, and by feeding this into a tenter machine and flattening it, a fine fabric sheet with a thickness of 0.01 mm can be obtained, and by removing the selvage portion, a polyester fine fabric sheet with a thickness of 10 to 12 µm can be obtained.

[0021] Since the thickness of the polyester monofilaments forming the warp and weft is 0.025 mm, there is almost no difference in height in the part where the warp and weft are perpendicular, so it is possible to obtain a fabric with a flat and smooth front and back surface.

[0022] In addition, the present invention allows for the safe production of fine fabric by weaving in the warp-setting stage by arranging 5 to 10 strands of side warp threads made of polyester monofilament with a diameter of 0.03 mm on the left and right sides of the warp threads, thereby firmly securing both ends of the weft threads that are bonded to the warp threads at the side warp threads, resulting in a robust fabric structure that maintains stability during washing, weight reduction processing, and tenter processing.

[0023] As a result, it is possible to weave a thin fabric with a flat surface, and even when metal plating is applied, a fine fabric with a flat surface and no irregularities can be manufactured, which provides the advantage of being able to use it in the manufacture of precision electronic products such as semiconductors. Brief explanation of the drawing

[0025] FIG. 1 is an exemplary diagram showing the composition of warp and weft yarns in the step of weaving the fabric of the present invention. FIG. 2 is an exemplary diagram of the polyester composite yarn composition of the present invention. FIG. 3 is an exemplary cross-sectional view of a fabric woven using warp and weft yarns made of polyester composite yarn according to the present invention. FIG. 4 is an example of a fabric showing the warp and weft yarns separated into multiple strands of polyester monofilament by removing the melted yarn constituting the warp and weft yarns of the fabric. Fig. 5(a) is a cross-sectional view along line a-a' of Fig. 4, and (b) is a cross-sectional view along line b-b' of Fig. 4. Specific details for implementing the invention

[0026] The present invention comprises a warp and weft preparation step in which a polyester composite yarn (a) in which several fine polyester monofilaments (a) having a certain thickness are spun so as to be embedded in parallel within a modified polyester melted yarn (b) having a certain thickness is manufactured by a composite spinning method in which several fine polyester monofilaments (a) are combined within the modified polyester melted yarn (b) and selected as the warp (1) and weft (2) of a fabric to be woven;

[0027] A warp warping step in which prepared warp threads (1) are arranged at regular intervals to maintain a certain width in the warping section of a loom such as an air jet or water jet and warped, and then two warp threads (1a) made of polyester monofilament with a diameter of 0.03 mm are warped on the left and right sides of the warped warp threads in a range of 5 to 10 strands to supply two warp threads to one body hole;

[0028] A weaving step of a fabric sheet (3) in which a weft supply unit is installed on one side perpendicular to the warp direction, and the weft (2) is supplied to the warp (1) and the warp for the side (1a) through a weft supply device installed in the weft supply unit, and the weft is combined with the warp and the warp for the side by cutting the side of the weft supply unit when the end protrudes to the opposite side of the supply unit, and a body needle is applied;

[0029] A fine polyester monofilament separation step in which the woven fabric is immersed in hot water at 85–90°C for 30–60 minutes to dissolve the modified polyester melted yarn portion and separate the fine polyester monofilaments bound to the modified polyester melted yarn one by one;

[0030] A fabric washing step in which fine polyester monofilaments are separated one by one to form warp and weft yarns, and the fabric is placed in a washing tank and shaken to remove dissolved yarn residue remaining on the fabric;

[0031] A step for establishing the thickness of a fabric sheet, wherein the upper and lower surfaces of the fabric sheet from which dissolved yarn residue has been removed are pressed to ensure that the fine polyester monofilaments forming the warp are arranged neatly in the warp direction and the fine polyester monofilaments forming the weft are arranged neatly in the weft direction, thereby forming a plain weave fabric sheet in which multiple warp strands and multiple weft strands are interwoven, so that the thickness of the fabric sheet becomes 0.02 mm;

[0032] A tentering step in which a fabric sheet established with a thickness of 0.02mm is fed into a tenter machine to flatten the fabric sheet and tenter process it so that the fabric sheet thickness becomes 0.01mm;

[0033] This is a method for manufacturing a polyester fine fabric by cutting off the selvage portions (3a) and (3b) of a tenter-processed fabric (3) to select a fine fabric with a thickness of 0.01 mm and a flat front and back surface.

[0034] As the composite spinning method mentioned above is a method currently used by companies to manufacture polyester composite yarns, a detailed explanation is omitted.

[0035] Meanwhile, the present invention selects the modified polyester melted yarn (b) constituting the polyester composite yarn (a) such that its outer diameter is in the range of 0.025 to 0.03 mm, and

[0036] The fine polyester monofilament (a) is selected such that its outer diameter is in the range of 0.005 to 0.006 mm, and the number of strands of the fine polyester monofilament included in the modified polyester melt yarn is selected to be 8 strands, thereby enabling the manufacture of the desired fine fabric.

[0038]

[0039]

[0040]

[0041]

[0042]

[0043]

[0044] Explanation of the symbols

[0045] 1 : Slope 1a : Slope for side use 2 : Weft 3 : Fabric 3a, 3b : Death part a : Fine polyester monofilament b : Modified polyester melted yarn ga : Polyester composite yarn

Claims

Claim 1 A warp and weft yarn preparation step in which a polyester composite yarn (ga) in which fine polyester monofilaments (a) with an outer diameter in the range of 0.005 to 0.006 mm are spun by a composite spinning method in which strands are spun so as to be embedded parallelly within modified polyester melted yarn (b) with an outer diameter in the range of 0.025 to 0.03 mm, and the fine polyester monofilaments (a) are combined within the modified polyester melted yarn (b) to produce a polyester composite yarn (ga), which is selected as the warp (1) and weft (2) of the fabric to be woven; a warp warping step in which the prepared 0.02 mm warp (1) is arranged at regular intervals in the warping section of a loom such as an air jet or water jet and warped, and 5 to 10 strands of side warp (1a) made of polyester monofilaments with a diameter of 0.03 mm are warped on the left and right sides of the warped 0.02 mm warp, respectively, so that two warp threads pass through a single body hole; and a warp perpendicular to the warp direction A weaving step of a fabric sheet (3) in which a weft supply unit is installed on one side, and the weft yarn (2) is supplied to the warp (1) and the warp for the side (1a) through a weft supply device installed in the weft supply unit, and the weft yarn is combined with the warp and the warp for the side by cutting the side of the weft supply unit when the end protrudes to the opposite side of the supply unit, and a body needle is applied; a fine polyester monofilament separation step in which the woven fabric sheet is immersed in hot water at 85~90℃ for 30~60 minutes to melt the modified polyester melted yarn portion and separate the fine polyester monofilaments bound to the modified polyester melted yarn one by one; a fabric washing step in which the fabric sheet forming the warp and weft yarns, with the fine polyester monofilaments separated one by one, is placed in a washing tank and shaken to remove the melted yarn residue remaining in the fabric sheet; and the upper and lower surfaces of the fabric sheet from which the melted yarn residue has been removed are pressed so that the fine polyester monofilaments forming the warp yarn are arranged neatly in the warp direction, and the fine polyester monofilaments forming the weft yarn A step for establishing the thickness of a fabric sheet, wherein a plurality of warp strands and a plurality of weft strands are interwoven to form a plain weave fabric sheet by arranging them neatly in the weft direction, thereby making the thickness of the fabric sheet 0.02 mm; the thickness of the fabric sheet is 0.A method for manufacturing a thin and flat-surfaced polyester fine fabric, comprising: a tentering step of feeding a fabric established at 0.2mm into a tenter machine to flatten the fabric so that the thickness of the fabric becomes 0.01mm; and a step of cutting off the selvage portions (3a) and (3b) of the tenter-processed fabric (3) to obtain a fine fabric with a thickness of 0.01mm and a flat surface. Claim 2 A method for manufacturing a thin and flat-surfaced polyester fine fabric, characterized in that, in claim 1, the modified polyester melted yarn (b) constituting the polyester composite yarn (a) is selected such that its outer diameter is in the range of 0.025 to 0.03 mm, the fine polyester monofilament (a) is selected such that its outer diameter is in the range of 0.005 to 0.006 mm, and the number of strands of the fine polyester monofilament (a) contained within the modified polyester melted yarn (b) is selected to be 8 strands.

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