Improved fiberglass cloth

Abstract

This invention provides an improved fiberglass cloth. [Solution] The improved fiberglass cloth comprises a plurality of warp threads and a plurality of weft threads woven with the plurality of warp threads. The plurality of warp threads have a warp density of 63 threads / inch to 74 threads / inch and a warp gap of 0.033 mm to 0.098 mm. The plurality of weft threads have a weft density of 48 threads / inch to 77 threads / inch and a weft gap of 0.012 mm to 0.098 mm. The basis weight of the fiberglass cloth is 45 g / m². 2 ~108g / m 2 That is the case.

Description

[Technical Field]

[0001] The present invention relates to glass fiber cloth, and more particularly to improved glass fiber cloth. [Background technology]

[0002] In conventional glass fiber fabrics, the tension on the warp threads is usually relatively high, making it relatively difficult to separate the warp threads. Existing glass fiber cloths often have insufficient fiber separation after separation, resulting in an uneven mass distribution on the surface of the glass fiber fabric. This can easily lead to differences in signal transmission speed in circuit boards formed from the glass fiber fabric. [Overview of the project] [Problems that the invention aims to solve]

[0003] The technological problem that this invention aims to solve is to provide an improved glass fiber fabric that can overcome the shortcomings of the prior art, specifically the problem of insufficient fiber opening in conventional glass fiber fabrics. [Means for solving the problem]

[0004] To solve the above technical problems, one of the technical means employed by the present invention is to provide an improved glass fiber cloth. The improved glass fiber cloth comprises a plurality of warp threads and a plurality of weft threads woven with the plurality of warp threads, wherein the plurality of warp threads have a warp density of 63 threads / inch to 74 threads / inch and a warp gap of 0.033 mm to 0.098 mm, and the plurality of weft threads have a weft density of 48 threads / inch to 77 threads / inch and a weft gap of 0.012 mm to 0.098 mm, and the basis weight of the glass fiber cloth is 45 g / m² 2 ~108g / m 2 That is the case.

[0005] Preferably, the improved glass fiber cloth has a fiber opening degree of 67% to 82%.

[0006] Preferably, the basis weight of the improved glass fiber cloth is the same as that of type #2116, type #3313, type #1078, or type #1280.

[0007] Preferably, the thickness of the improved glass fiber cloth is 0.041 mm to 0.092 mm.

[0008] Preferably, the types of the warp threads are E225 or D450.

[0009] Preferably, the types of the weft yarns are DE300, D450, D900, or D600.

[0010] Preferably, the average signal skew of the longitudinal wiring on the circuit board formed on the improved glass fiber cloth is 0.61 picoseconds to 2.3 picoseconds, and the maximum signal skew of the longitudinal wiring on the circuit board formed on the improved glass fiber cloth is 1.65 picoseconds to 7.42 picoseconds.

[0011] Preferably, the average signal skew of the lateral wiring on the circuit board formed on the improved glass fiber cloth is 0.28 picoseconds to 1.49 picoseconds, and the maximum signal skew of the lateral wiring on the circuit board formed on the improved glass fiber cloth is 1.07 picoseconds to 2.62 picoseconds.

[0012] Preferably, the type of the multiple warp threads is E225, and the multiple warp threads have a warp density of 63 threads / inch to 69 threads / inch and a warp gap of 0.033 mm to 0.060 mm, the type of the multiple weft threads is DE300 or D450, and the multiple weft threads have a weft density of 48 threads / inch to 72 threads / inch and a weft gap of 0.039 mm to 0.098 mm, and the basis weight of the improved fiberglass cloth is the same as that of type #2116 or type #3313.

[0013] Preferably, the improved glass fiber cloth has a density of 78 g / m². 2 ~108g / m 2 It has a basis weight of 0.068 mm to 0.092 mm and a fiber opening degree of 67% to 82%.

[0014] Preferably, the types of the plurality of warp threads are D450. The plurality of warp threads have a warp density of 68 to 74 threads per inch and a warp gap of 0.087 to 0.098 mm. The types of the plurality of weft threads are D900 or D600. The plurality of weft threads have a weft density of 62 to 77 threads per inch and a weft gap of 0.012 to 0.033 mm. The basis weight of the improved glass fiber cloth is the same as that of #1078 type or #1280 type.

[0015] Preferably, the improved glass fiber cloth has a basis weight of 45 g / m 2 ~55 g / m 2 and a thickness of 0.041 to 0.049 mm and an open fiber ratio of 67% to 72%.

Advantages of the Invention

[0016] One of the beneficial effects of the present invention is that the improved glass fiber cloth according to the present invention has technical features such as "the plurality of warp threads have a warp density of 63 to 74 threads per inch and a warp gap of 0.033 to 0.098 mm", and "the plurality of weft threads have a weft density of 48 to 77 threads per inch and a weft gap of 0.012 to 0.098 mm", which can improve the problem that the open fiber ratio of the conventional glass fiber cloth is insufficient.

Brief Description of the Drawings

[0017] [Figure 1] It is a top view showing the improved glass fiber cloth according to an embodiment of the present invention. [Figure 2] It is a schematic side view showing the improved glass fiber cloth according to an embodiment of the present invention.

Modes for Carrying Out the Invention

[0018] To further deepen the understanding of the features and technical content of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings. However, the provided accompanying drawings are only for reference and explanation, and do not limit the scope of the claims of the present invention.

[0019] Hereinafter, the implementation manner of the "improved glass fiber cloth" according to the present invention will be described according to a specific embodiment. Those skilled in the art can understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can be implemented or applied according to another different specific embodiment. For each detail in this specification, various modifications and changes can be made based on different viewpoints and uses without departing from the concept of the present invention. It should be explained in advance that the accompanying drawings of the present invention are simple schematic explanations and are not drawn based on actual sizes. The technical content of the present invention will be described in more detail based on the following embodiments, but the protection scope of the present invention is not limited by the disclosed content.

[0020] It should be understood that in this specification, terms such as "first", "second", "third", etc. may be used to describe various elements or signals, but these elements or signals are not limited by these terms. These terms are mainly used to distinguish one element from another element, or one signal from another signal. Also, the term "or" used in this specification may include any one or a combination of multiple items listed in relation to the actual situation.

[0021] Figure 1 is a top view showing an improved glass fiber cloth according to an embodiment of the present invention, and Figure 2 is a schematic side view showing an improved glass fiber cloth according to an embodiment of the present invention. As shown in Figure 1, the improved glass fiber cloth 100 includes a plurality of warp threads 1 and a plurality of weft threads 2 woven with the plurality of warp threads 1. The plurality of warp threads 1 have a warp density of 63 threads / inch to 74 threads / inch and a warp gap G1 of 0.033 mm to 0.098 mm. The plurality of weft threads 2 have a weft density of 48 threads / inch to 77 threads / inch and a weft gap G2 of 0.012 mm to 0.098 mm. The thickness T of the improved glass fiber cloth 100 is 0.041 mm to 0.092 mm. The basis weight of the glass fiber cloth 100 is 45 g / m². 2 ~108g / m 2 That is the case.

[0022] The improved glass fiber cloth 100 can be opened by common methods such as extrusion, high-pressure washing, friction, and water jet. The improved glass fiber cloth 100 has a degree of opening of 67% to 82%, but the present invention does not limit the method of opening the improved glass fiber cloth 100.

[0023] The basis weight of the improved glass fiber cloth 100 may be the same as that of the #2116 type, #3313 type, #1078 type, or 1280 type. In other words, the improved glass fiber cloth 100 may be improved for a specific type of cloth. Generally, warp threads are subjected to relatively high tension, making them somewhat difficult to open. In the improved glass fiber cloth 100 according to this embodiment, the basis weight of the improved glass fiber cloth 100 may be that of the #2116 type, #3313 type, #1078 type, or #1280 type by first selecting a specific warp thread 1, controlling the gap G1 between the warp threads 1, and then further selecting the weft thread 2 and controlling the gap G2 between the weft threads 2. For example, the types of multiple warp threads 1 may be E225 or D450, and the types of multiple weft threads 2 may be DE300, D450, D900, or D600. It should be noted that the types of warp and weft threads in this invention refer to the types of threads specified in the JIS R 3413 standard.

[0024] The improved glass fiber cloth 100 can be used for manufacturing a circuit board provided with differential pair wiring arranged in parallel, and then, the signal skew in two wirings on the circuit board is measured. Specifically, the average value of the signal skew of the vertical wiring of the circuit board formed with the improved glass fiber cloth 100 is 0.61 picoseconds to 2.3 picoseconds, and the maximum value of the signal skew of the vertical wiring of the circuit board formed with the improved glass fiber cloth 100 is 1.65 picoseconds to 7.42 picoseconds. Also, the average value of the signal skew of the horizontal wiring of the circuit board formed with the improved glass fiber cloth 100 is 0.28 picoseconds to 1.49 picoseconds, and the maximum value of the signal skew of the horizontal wiring of the circuit board formed with the improved glass fiber cloth 100 is 1.07 picoseconds to 2.62 picoseconds.

[0025] In an embodiment, the types of the plurality of the warp yarns 1 are E225, the plurality of the warp yarns 1 have a warp density of 63 to 69 yarns per inch and a gap G1 between the warp yarns of 0.033 mm to 0.060 mm, the types of the plurality of the weft yarns 2 are DE300 or D450, the plurality of the weft yarns 2 have a weft density of 48 to 72 yarns per inch and a gap G2 between the weft yarns of 0.039 mm to 0.098 mm, and the basis weight of the improved glass fiber cloth 100 is of #2116 type or #3313 type. In this embodiment, the improved glass fiber cloth 100 has a basis weight of 2 78 g / m 2 to 108 g / m, a thickness T of 0.068 mm to 0.092 mm, and an open fiber degree of 67% to 82%.

[0026] More specifically, the type of the multiple warp threads 1 is E225, and the multiple warp threads 1 have a warp density of 63 threads / inch to 69 threads / inch and a warp gap G1 of 0.033 mm to 0.039 mm; the type of the multiple weft threads 2 is DE300, and the multiple weft threads 2 have a weft density of 66 threads / inch to 72 threads / inch and a weft gap G2 of 0.039 mm to 0.045 mm; the basis weight of the improved glass fiber cloth 100 is the same as that of type #2116, and the improved glass fiber cloth 100 has a basis weight of 102 g / m². 2 ~108g / m 2 It has a basis weight, a thickness T of 0.086 mm to 0.092 mm, and a fiber opening degree of 78% to 82%.

[0027] Alternatively, the type of the multiple warp threads 1 is E225, and the multiple warp threads 1 have a warp density of 63 threads / inch to 69 threads / inch and a warp gap G1 of 0.054 mm to 0.060 mm, the type of the multiple weft threads 2 is D450, and the multiple weft threads 2 have a weft density of 48 threads / inch to 54 threads / inch and a weft gap G2 of 0.092 mm to 0.098 mm, the basis weight of the improved glass fiber cloth 100 is the same as that of type #3313, and the basis weight of the improved glass fiber cloth 100 is 78 g / m². 2 ~84g / m 2 It has a basis weight between 0.068 mm and 0.074 mm, a thickness T of 67% to 71%, and a fiber opening degree of 67% to 71%.

[0028] In one embodiment, the type of the multiple warp threads 1 is D450, and the multiple warp threads 1 have a warp density of 68 threads / inch to 74 threads / inch and a warp gap G1 of 0.087 mm to 0.098 mm; the type of the multiple weft threads 2 is D900 or D600, and the multiple weft threads 2 have a weft density of 62 threads / inch to 77 threads / inch and a weft gap G2 of 0.012 mm to 0.033 mm; the basis weight of the improved glass fiber cloth 100 is the same as that of type #1078 or type #1280; and the basis weight of the improved glass fiber cloth 100 is 45 g / m². 2 ~55g / m 2 It has a basis weight, a thickness T of 0.041 mm to 0.049 mm, and a fiber opening degree of 67% to 72%.

[0029] More specifically, the type of the multiple warp threads 1 is D450, and the multiple warp threads 1 have a warp density of 68 threads / inch to 74 threads / inch and a warp gap G1 of 0.092 mm to 0.098 mm; the type of the multiple weft threads 2 is D900, and the multiple weft threads 2 have a weft density of 71 threads / inch to 77 threads / inch and a weft gap G2 of 0.012 mm to 0.018 mm; the basis weight of the improved glass fiber cloth 100 is the same as that of type #1078; and the basis weight of the improved glass fiber cloth 100 is 45 g / m². 2 ~51g / m 2 It has a basis weight, a thickness T of 0.041 mm to 0.047 mm, and a fiber opening degree of 68% to 72%.

[0030] Alternatively, the type of the multiple warp threads 1 is D450, and the multiple warp threads 1 have a warp density of 68 threads / inch to 74 threads / inch and a warp gap G1 of 0.087 mm to 0.093 mm, the type of the multiple weft threads 2 is D600, and the multiple weft threads 2 have a weft density of 62 threads / inch to 68 threads / inch and a weft gap G2 of 0.027 mm to 0.033 mm, the basis weight of the improved glass fiber cloth 100 is the same as that of the #1280 type, and the basis weight of the improved glass fiber cloth 100 is 49 g / m². 2 ~55g / m 2 It has a basis weight, a thickness T of 0.043 mm to 0.049 mm, and a fiber opening degree of 67% to 71%.

[0031] [Measurement of experimental data] The present invention will be explained in detail below with reference to Examples 1-4 and Comparative Examples 1-4. However, these examples are merely means to understand the present invention, and the scope of the present invention is not limited to them.

[0032] Example 1: The warp thread type was E225, the warp thread density was 66 threads / inch, and the warp thread gap was 0.036 mm. The weft thread type was DE300, the weft thread density was 69 threads / inch, and the weft thread gap was 0.042 mm. The fiberglass cloth of Example 1 can be considered an improved #2116 type.

[0033] Example 2: The warp type was E225, the warp density was 66 threads / inch, and the warp gap was 0.057 mm. The weft type was D450, the weft density was 51 threads / inch, and the weft gap was 0.095 mm. The fiberglass cloth of Example 2 can be considered an improved #3313 type.

[0034] Example 3: The warp thread type was D450, the warp thread density was 71 threads / inch, and the warp thread spacing was 0.095 mm. The weft thread type was D900, the weft thread density was 74 threads / inch, and the weft thread spacing was 0.015 mm. The fiberglass cloth of Example 3 can be considered an improved #1078 type.

[0035] Example 4: The warp thread type was D450, the warp thread density was 71 threads / inch, and the warp thread gap was 0.090 mm. The weft thread type was D600, the weft thread density was 65 threads / inch, and the weft thread gap was 0.030 mm. The fiberglass cloth of Example 4 can be considered an improved #1280 type.

[0036] Comparative Example 1: The fiberglass cloth was of type #2116. The warp type was E225, the warp density was 61 threads / inch, and the warp gap was 0.055 mm. The weft type was E225, the weft density was 57 threads / inch, and the weft gap was 0.093 mm.

[0037] Comparative Example 2: The fiberglass cloth was of type #3313. The warp thread type was DE300, the warp thread density was 60 threads / inch, and the warp thread gap was 0.125 mm. The weft thread type was DE300, the weft thread density was 62 threads / inch, and the weft thread gap was 0.027 mm.

[0038] Comparative Example 3: The fiberglass cloth was of type #1078. The warp thread type was D450, the warp thread density was 55 threads / inch, and the warp thread gap was 0.177 mm. The weft thread type was D450, the weft thread density was 53 threads / inch, and the weft thread gap was 0.062 mm.

[0039] Comparative Example 4: The fiberglass cloth was of type #1280. The warp thread type was D450, the warp thread density was 60 threads / inch, and the warp thread gap was 0.153 mm. The weft thread type was D450, the weft thread density was 58 threads / inch, and the weft thread gap was 0.023 mm.

[0040] The mixing ratios, basis weight, thickness, fiber opening degree, and signal skew of each component of the improved glass fiber cloth in Examples 1-4 and Comparative Examples 1-4 are shown in Table 1 below, and the measurement methods are described below.

[0041] Opening degree: This is calculated as the percentage of the surface area occupied by overlapping warp and weft threads (two layers of threads) in a fiberglass fabric. Specifically, the opening degree is obtained using the following formula. Here, the units for warp and weft widths are mm, and the units for warp density and weft density are strips / inch. (Warp width × Weft width) / ((25.4 / Warp density) × (25.4 / Weft density)) × 100

[0042] The signal skew was measured as follows: A circuit board was fabricated using fiberglass cloth, containing parallel differential pair circuits, with a circuit length of 10 inches. The signal skew of two wires on the circuit board was then measured. Additionally, the signal skew of either the vertical or horizontal wiring was measured after deflecting it by 10° in 0.8-inch increments.

[0043] [Table 1-1] [Table 1-2]

[0044] [Review of measurement results] As can be seen from Examples 1-4 and Comparative Examples 1-4, Examples 1-4 improve upon the #2116 type, #3313 type, #1078 type, and #1280 type, respectively, while maintaining the same basis weight as the conventional fabric type, and improving the fiber opening degree and signal skew of the conventional fabric type.

[0045] [Advantageous effects of the embodiment] One of the beneficial effects of the present invention is that the improved glass fiber cloth according to the present invention can improve upon the problem of insufficient fiber opening in conventional glass fiber cloths due to its technical features, such as "the multiple warp threads having a warp density of 63 threads / inch to 74 threads / inch and a warp gap of 0.033 mm to 0.098 mm" and "the multiple weft threads having a weft density of 48 threads / inch to 77 threads / inch and a weft gap of 0.012 mm to 0.098 mm".

[0046] The information disclosed above represents only preferred and implementable embodiments of the present invention, and the claims of the present invention are not limited thereto. Therefore, any equivalent technical modifications made using the description and drawings of the present invention are all included within the scope of the claims of the present invention. [Explanation of symbols]

[0047] 100...Improved fiberglass cloth 1... Warp threads 2...Weft threads G1...Gap between warp threads G2...Gap in the weft threads T...thickness

Claims

1. An improved glass fiber comprising a plurality of warp threads and a plurality of weft threads woven with the plurality of warp threads, The multiple warp threads have a warp density of 63 threads / inch to 74 threads / inch and a warp gap of 0.033 mm to 0.098 mm. The multiple weft threads have a weft density of 48 threads / inch to 77 threads / inch and a gap between weft threads of 0.012 mm to 0.098 mm. The basis weight of the aforementioned glass fiber cloth is 45 g / m². ２ ~108g / m ２ An improved glass fiber cloth characterized by the following:

2. The improved glass fiber cloth according to claim 1, wherein the improved glass fiber cloth has a fiber opening degree of 67% to 82%.

3. The improved glass fiber cloth according to claim 1, wherein the basis weight of the improved glass fiber cloth is the same as that of type #2116, type #3313, type #1078, or type #1280.

4. The improved glass fiber cloth according to claim 1, wherein the thickness of the improved glass fiber cloth is 0.041 mm to 0.092 mm.

5. The improved glass fiber cloth according to claim 1, wherein the types of the multiple warp threads are E225 or D450.

6. The improved glass fiber cloth according to claim 1, wherein the multiple types of weft threads are DE300, D450, D900, or D600.

7. The improved glass fiber cloth according to claim 1, wherein the average signal skew of the longitudinal wiring of the circuit board on which the improved glass fiber cloth is formed is 0.61 picoseconds to 2.3 picoseconds, and the maximum signal skew of the longitudinal wiring of the circuit board on which the improved glass fiber cloth is formed is 1.65 picoseconds to 7.42 picoseconds.

8. The improved glass fiber cloth according to claim 1, wherein the average signal skew of the lateral wiring of the circuit board on which the improved glass fiber cloth is formed is 0.28 picoseconds to 1.49 picoseconds, and the maximum signal skew of the lateral wiring of the circuit board on which the improved glass fiber cloth is formed is 1.07 picoseconds to 2.62 picoseconds.

9. The improved glass fiber cloth according to claim 1, wherein the type of the multiple warp threads is E225, and the multiple warp threads have a warp density of 63 threads / inch to 69 threads / inch and a warp gap of 0.033 mm to 0.060 mm, the type of the multiple weft threads is DE300 or D450, and the multiple weft threads have a weft density of 48 threads / inch to 72 threads / inch and a weft gap of 0.039 mm to 0.098 mm, and the basis weight of the improved glass fiber cloth is the same as that of type #2116 or type #3313.

10. The improved glass fiber cloth is 78 g / m². ２ ~108g / m ２ The improved glass fiber cloth according to claim 9, having a basis weight, a thickness of 0.068 mm to 0.092 mm, and a fiber opening degree of 67% to 82%.

11. The improved glass fiber cloth according to claim 1, wherein the type of the multiple warp threads is D450, and the multiple warp threads have a warp density of 68 threads / inch to 74 threads / inch and a warp gap of 0.087 mm to 0.098 mm, the type of the multiple weft threads is D900 or D600, and the multiple weft threads have a weft density of 62 threads / inch to 77 threads / inch and a weft gap of 0.012 mm to 0.033 mm, and the basis weight of the improved glass fiber cloth is the same as that of type #1078 or type #1280.

12. The improved glass fiber cloth is 45 g / m ２ ~55g / m ２ The improved glass fiber cloth according to claim 11, having a basis weight, a thickness of 0.041 mm to 0.049 mm, and a fiber opening degree of 67% to 72%.

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