Improved glass fiber cloth
By adjusting the density and spacing of the warp and weft yarns, the fiber opening problem of the glass fiber cloth was improved, the signal transmission uniformity of the circuit board was enhanced, and the problems of uneven quality and signal differences caused by high warp tension in the existing technology were solved.
Patent Information
- Application Number
- CN202411521984.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-23
- Filing Date
- 2024-10-29
- Publication Date
- 2026-04-24
AI Technical Summary
The existing fiberglass cloth has high tension on the warp yarns, resulting in insufficient fiber opening, uneven distribution of planar mass, and differences in signal transmission speed on the circuit board.
The modified fiberglass cloth is formed by using multiple warp yarns with a density of 63 yarns/inch to 74 yarns/inch and a warp yarn gap between 0.033 mm and 0.098 mm, and multiple weft yarns with a density of 48 yarns/inch to 77 yarns/inch and a weft yarn gap between 0.012 mm and 0.098 mm.
It effectively improves the fiber opening degree of the glass fiber cloth, improves the signal transmission uniformity of the circuit board, and reduces signal deviation.
Smart Images
Figure CN121915536A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a glass fiber cloth, and more particularly to a modified glass fiber cloth. Background Technology
[0002] In existing fiberglass cloths, the warp yarns are typically difficult to open due to the high tension they experience. Because the degree of fiber opening after opening is insufficient, the planar mass distribution of the fiberglass cloth is uneven, and circuit boards containing fiberglass cloth are prone to differences in signal transmission speed. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide an improved glass fiber cloth that effectively improves the problem of insufficient open fiber degree of existing glass fiber cloth.
[0004] To address the aforementioned technical problems, one technical solution adopted by the present invention is to provide a modified fiberglass cloth, comprising: a plurality of warp yarns; wherein the plurality of warp yarns have a warp density between 63 yarns / inch and 74 yarns / inch and a warp yarn gap between 0.033 mm and 0.098 mm; and a plurality of weft yarns interwoven with the plurality of warp yarns; wherein the plurality of weft yarns have a weft density between 48 yarns / inch and 77 yarns / inch and a weft yarn gap between 0.012 mm and 0.098 mm; wherein the basis weight of the modified fiberglass cloth is between 45 g / m². 2 Up to 108 g / m 2 between.
[0005] Optionally, the modified glass fiber cloth has an openness between 67% and 82%.
[0006] Optionally, the basis weight of the modified glass fiber cloth is the same as that of 2116, 3313, 1078, or 1280 fabric types.
[0007] Optionally, the thickness of the modified fiberglass cloth is between 0.041 mm and 0.092 mm.
[0008] Optionally, the variety of the warp yarns may be E225 or D450.
[0009] Optionally, the variety of the multiple weft yarns is DE300, D450, D900 or D600.
[0010] Optionally, the average signal deviation of the warp lines of the circuit board with the modified glass fiber cloth is between 0.61 picoseconds and 2.3 picoseconds, and the maximum signal deviation of the warp lines of the circuit board with the modified glass fiber cloth is between 1.65 picoseconds and 7.42 picoseconds.
[0011] Optionally, the average signal deviation of the weft lines of the circuit board with the modified fiberglass cloth is between 0.28 picoseconds and 1.49 picoseconds, and the maximum signal deviation of the weft lines of the circuit board with the modified fiberglass cloth is between 1.07 picoseconds and 2.62 picoseconds.
[0012] Optionally, the warp yarns are of type E225, have a warp density between 63 yarns / inch and 69 yarns / inch and a warp gap between 0.033 mm and 0.060 mm, the weft yarns are of type DE300 or D450, have a weft density between 48 yarns / inch and 72 yarns / inch and a weft gap between 0.039 mm and 0.098 mm, and the basis weight of the modified fiberglass cloth is the same as that of 2116 or 3313 fabric.
[0013] Optionally, the modified glass fiber cloth has a density of between 78 g / m². 2 Up to 108 g / m 2 The basis weight, thickness between 0.068 mm and 0.092 mm, and open fiber content between 67% and 82%.
[0014] Optionally, the plurality of warp yarns are of type D450, the plurality of warp yarns have a warp density between 68 yarns / inch and 74 yarns / inch and a warp gap between 0.087 mm and 0.098 mm, the plurality of weft yarns are of type D900 or D600, the plurality of weft yarns have a weft density between 62 yarns / inch and 77 yarns / inch and a weft gap between 0.012 mm and 0.033 mm, and the basis weight of the modified fiberglass cloth is the same as that of 1078 or 1280 fabric.
[0015] Optionally, the modified glass fiber cloth has a density of between 45 g / m². 2 Up to 55 g / m 2 The basis weight, thickness between 0.041 mm and 0.049 mm, and open fiber content between 67% and 72%.
[0016] One of the beneficial effects of the present invention is that the improved glass fiber cloth provided by the present invention can effectively improve the problem of insufficient open fiber ratio of existing glass fiber cloth by means of the technical solution of "multiple warp yarns having a warp density between 63 yarns / inch and 74 yarns / inch and a warp gap between 0.033 mm and 0.098 mm" and "multiple weft yarns having a weft density between 48 yarns / inch and 77 yarns / inch and a weft gap between 0.012 mm and 0.098 mm".
[0017] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description
[0018] Figure 1 This is a top view schematic diagram of the improved glass fiber cloth according to an embodiment of the present invention.
[0019] Figure 2 This is a side view of the improved glass fiber cloth according to an embodiment of the present invention. Detailed Implementation
[0020] The following specific embodiments illustrate the implementation of the "modified fiberglass cloth" disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated beforehand. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention.
[0021] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein may, depending on the context, include any combination of one or more of the related listed items.
[0022] See Figure 1 As shown, Figure 1 This is a top view schematic diagram of the improved glass fiber cloth according to an embodiment of the present invention, and Figure 2This is a side view of a modified fiberglass cloth according to an embodiment of the present invention. The modified fiberglass cloth 100 comprises a plurality of warp yarns 1 and a plurality of weft yarns 2 interwoven with the plurality of warp yarns 1. The plurality of warp yarns 1 have a warp density between 63 yarns / inch and 74 yarns / inch and a warp gap G1 between 0.033 mm and 0.098 mm, and the plurality of weft yarns 2 have a weft density between 48 yarns / inch and 77 yarns / inch and a weft gap G2 between 0.012 mm and 0.098 mm. The thickness T of the modified fiberglass cloth 100 is between 0.041 mm and 0.092 mm. The basis weight of the fiberglass cloth is between 45 g / m³. 2 Up to 108 g / m 2 between.
[0023] The modified glass fiber cloth 100 can be opened by conventional methods, such as extrusion, high-pressure water washing, friction, or water jetting, and the modified glass fiber cloth 100 can have an opening degree between 67% and 82%. However, the present invention does not limit the opening method of the modified glass fiber cloth 100.
[0024] The basis weight of the modified fiberglass cloth 100 can be the same as that of 2116, 3313, 1078, or 1280 fabric types. In other words, the modified fiberglass cloth 100 can be modified for specific fabric types. Generally, warp yarns are more difficult to open because they bear higher tension. In the modified fiberglass cloth 100 of this embodiment, specific warp yarns 1 can be selected first and the warp yarn gap G1 can be controlled, and then weft yarns 2 can be selected and the weft yarn gap G2 can be controlled, so that the basis weight of the modified fiberglass cloth 100 can be the same as that of 2116, 3313, 1078, or 1280 fabric types. For example, the variety of multiple warp yarns 1 can be E225 or D450, and the variety of multiple weft yarns 2 can be DE300, D450, D900, or D600.
[0025] The modified fiberglass cloth 100 can be used to fabricate a circuit board with parallel paired lines, and then the signal skew of the two lines on the circuit board is tested. Specifically, the average signal skew of the warp lines of the circuit board with the modified fiberglass cloth 100 is between 0.61 picoseconds and 2.3 picoseconds, and the maximum signal skew of the warp lines of the circuit board with the modified fiberglass cloth 100 is between 1.65 picoseconds and 7.42 picoseconds. Furthermore, the average signal skew of the weft lines of the circuit board with the modified fiberglass cloth 100 is between 0.28 picoseconds and 1.49 picoseconds, and the maximum signal skew of the weft lines of the circuit board with the modified fiberglass cloth 100 is between 1.07 picoseconds and 2.62 picoseconds.
[0026] In one embodiment, the plurality of warp yarns 1 are of type E225, have a warp density between 63 yarns / inch and 69 yarns / inch, and a warp gap G1 between 0.033 mm and 0.060 mm. The plurality of weft yarns 2 are of type DE300 or D450, have a weft density between 48 yarns / inch and 72 yarns / inch, and a weft gap G2 between 0.039 mm and 0.098 mm. The modified fiberglass cloth 100 has the same basis weight as 2116 or 3313 fabric types. In this embodiment, the modified fiberglass cloth 100 has a basis weight between 78 g / m². 2 Up to 108 g / m 2 The basis weight, thickness T between 0.068 mm and 0.092 mm, and open fiber content between 67% and 82%.
[0027] More specifically, the warp yarns 1 are of type E225, have a warp density between 63 yarns / inch and 69 yarns / inch, and a warp gap G1 between 0.033 mm and 0.039 mm; the weft yarns 2 are of type DE300, have a weft density between 66 yarns / inch and 72 yarns / inch, and a weft gap G2 between 0.039 mm and 0.045 mm; the modified fiberglass cloth 100 has the same basis weight as 2116 fabric, and the modified fiberglass cloth 100 has a basis weight between 102 g / m². 2 Up to 108 g / m 2 The basis weight is between 0.086 mm and 0.092 mm, the thickness T is between 0.086 mm and 0.092 mm, and the open fiber content is between 78% and 82%.
[0028] Alternatively, the warp yarns 1 are of type E225, have a warp density between 63 yarns / inch and 69 yarns / inch, and a warp gap G1 between 0.054 mm and 0.060 mm; the weft yarns 2 are of type D450, have a weft density between 48 yarns / inch and 54 yarns / inch, and a weft gap G2 between 0.092 mm and 0.098 mm; the modified fiberglass cloth 100 has the same basis weight as 3313 fabric, and the modified fiberglass cloth 100 has a weight between 78 g / m². 2 Up to 84 g / m 2 The basis weight is between 0.068 mm and 0.074 mm, the thickness T is between 0.068 mm and 0.074 mm, and the open fiber content is between 67% and 71%.
[0029] In one embodiment, the plurality of warp yarns 1 are of type D450, have a warp density between 68 yarns / inch and 74 yarns / inch, and a warp gap G1 between 0.087 mm and 0.098 mm. The plurality of weft yarns 2 are of type D900 or D600, have a weft density between 62 yarns / inch and 77 yarns / inch, and a weft gap G2 between 0.012 mm and 0.033 mm. The modified fiberglass cloth 100 has the same basis weight as 1078 or 1280 fabric types, and the modified fiberglass cloth 100 has a basis weight between 45 g / m². 2 Up to 55 g / m 2 The basis weight, thickness T between 0.041 mm and 0.049 mm, and open fiber content between 67% and 72%.
[0030] More specifically, the plurality of warp yarns 1 are of type D450, have a warp density between 68 yarns / inch and 74 yarns / inch, and a warp gap G1 between 0.092 mm and 0.098 mm; the plurality of weft yarns 2 are of type D900, have a weft density between 71 yarns / inch and 77 yarns / inch, and a weft gap G2 between 0.012 mm and 0.018 mm; the basis weight of the modified fiberglass cloth 100 is the same as that of 1078 fabric, and the modified fiberglass cloth 100 has a basis weight between 45 g / m². 2 Up to 51 g / m 2 The basis weight, thickness T between 0.041 mm and 0.047 mm, and open fiber content between 68% and 72%.
[0031] Alternatively, the warp yarns 1 are of type D450, have a warp density between 68 yarns / inch and 74 yarns / inch, and a warp gap G1 between 0.087 mm and 0.093 mm; the weft yarns 2 are of type D600, have a weft density between 62 yarns / inch and 68 yarns / inch, and a weft gap G2 between 0.027 mm and 0.033 mm; the modified fiberglass cloth 100 has the same basis weight as 1280 fabric, and the modified fiberglass cloth 100 has a basis weight between 49 g / m². 2 Up to 55 g / m 2 The basis weight, thickness T between 0.043 mm and 0.049 mm, and open fiber content between 67% and 71%.
[0032] [Experimental Data Testing]
[0033] The present invention will now be described in detail with reference to Exemplary Examples 1 to 4 and Comparative Examples 1 to 4. However, the following examples are provided only to help understand the present invention, and the scope of the present invention is not limited to these examples.
[0034] Example 1: The warp yarn is E225, with a warp density of 66 yarns / inch and a warp spacing of 0.036 mm. The weft yarn is DE300, with a weft density of 69 yarns / inch and a weft spacing of 0.042 mm. The fiberglass cloth in Example 1 can be considered a modified 2116 fabric.
[0035] Example 2: The warp yarn is E225, with a warp density of 66 yarns / inch and a warp spacing of 0.057 mm. The weft yarn is D450, with a weft density of 51 yarns / inch and a weft spacing of 0.095 mm. The fiberglass cloth in Example 2 can be considered a modified 3313 fabric.
[0036] Example 3: The warp yarn is D450, with a warp density of 71 yarns / inch and a warp spacing of 0.095 mm; the weft yarn is D900, with a weft density of 74 yarns / inch and a weft spacing of 0.015 mm. The fiberglass cloth in Example 3 can be considered a modified version of fabric type 1078.
[0037] Example 4: The warp yarn is D450, with a warp density of 71 yarns / inch and a warp spacing of 0.090 mm. The weft yarn is D600, with a weft density of 65 yarns / inch and a weft spacing of 0.030 mm. The fiberglass cloth in Example 4 can be considered a modified 1280 fabric.
[0038] Comparative Example 1: The fiberglass cloth is type 2116. The warp yarn is type E225, with a warp density of 61 yarns / inch and a warp spacing of 0.055 mm. The weft yarn is type E225, with a weft density of 57 yarns / inch and a weft spacing of 0.093 mm.
[0039] Comparative Example 2: The fiberglass cloth is type 3313. The warp yarn is DE300, with a warp density of 60 yarns / inch and a warp spacing of 0.125 mm. The weft yarn is DE300, with a weft density of 62 yarns / inch and a weft spacing of 0.027 mm.
[0040] Comparative Example 3: The fiberglass cloth is type 1078. The warp yarn is type D450, with a warp density of 55 yarns / inch and a warp spacing of 0.177 mm. The weft yarn is type D450, with a weft density of 53 yarns / inch and a weft spacing of 0.062 mm.
[0041] Comparative Example 4: The fiberglass cloth is type 1280. The warp yarn is type D450, with a warp density of 60 yarns / inch and a warp spacing of 0.153 mm. The weft yarn is type D450, with a weft density of 58 yarns / inch and a weft spacing of 0.023 mm.
[0042] The component ratios, basis weights, thicknesses, open fiber degrees, and signal deviations of the improved glass fiber cloths described in Examples 1 to 4 and Comparative Examples 1 to 4 are shown in Table 1 below, and the relevant test methods are described below.
[0043] Fiber opening degree: Calculates the proportion of the area occupied by the overlapping (two layers of yarn) of the warp and weft yarns on the surface of the glass fiber cloth.
[0044] The signal deviation is tested as follows. A circuit board with parallel paired lines arranged on fiberglass cloth is made, with a line length of 10 inches. The signal deviation between two lines on the circuit board is then tested. Additionally, the signal deviation of either the warp or weft line is measured after each 0.8-inch deflection by 10 degrees.
[0045] [Table 1. Component proportions and property test results for the exemplary and comparative examples]
[0046]
[0047] [Discussion of Test Results]
[0048] As can be seen from Examples 1 to 4 and Comparative Examples 1 to 4, Examples 1 to 4 respectively improved the 2116 fabric, 3313 fabric, 1078 fabric and 1280 fabric, and improved the fiber opening degree and signal deviation of the original fabric while maintaining the same base type as the original fabric.
[0049] [Beneficial Effects of the Examples]
[0050] One of the beneficial effects of the present invention is that the improved glass fiber cloth provided by the present invention can effectively improve the problem of insufficient open fiber ratio of existing glass fiber cloth by means of the technical solution of "multiple warp yarns having a warp density between 63 yarns / inch and 74 yarns / inch and a warp gap between 0.033 mm and 0.098 mm" and "multiple weft yarns having a weft density between 48 yarns / inch and 77 yarns / inch and a weft gap between 0.012 mm and 0.098 mm".
[0051] The above-disclosed content is only an optional and feasible embodiment of the present invention, and is not intended to limit the claims of the present invention. Therefore, all equivalent technical changes made based on the description and drawings of the present invention are included in the claims of the present invention.
Claims
1. A modified glass fiber cloth, characterized in that, The modified glass fiber cloth comprises: Multiple warp yarns; wherein the multiple warp yarns have a warp density between 63 yarns / inch and 74 yarns / inch and a warp spacing between 0.033 mm and 0.098 mm; and Multiple weft yarns are interwoven with multiple warp yarns; wherein the multiple weft yarns have a weft density of between 48 yarns / inch and 77 yarns / inch and a weft gap of between 0.012 mm and 0.098 mm; The basis weight of the modified glass fiber cloth is between 45 g / m. 2 Up to 108 g / m 2 between.
2. The improved glass fiber cloth according to claim 1, characterized in that, The modified glass fiber cloth has an open fiber content between 67% and 82%.
3. The improved glass fiber cloth according to claim 1, characterized in that, The basis weight of the improved glass fiber cloth is the same as that of 2116 cloth, 3313 cloth, 1078 cloth or 1280 cloth.
4. The improved glass fiber cloth according to claim 1, characterized in that, The thickness of the modified fiberglass cloth is between 0.041 mm and 0.092 mm.
5. The improved glass fiber cloth according to claim 1, characterized in that, The warp yarns mentioned in many of them are of type E225 or D450.
6. The improved glass fiber cloth according to claim 1, characterized in that, The weft yarns mentioned are of the following varieties: DE300, D450, D900, or D600.
7. The improved glass fiber cloth according to claim 1, characterized in that, The average signal deviation of the warp lines of the circuit board with the modified glass fiber cloth is between 0.61 picoseconds and 2.3 picoseconds, and the maximum signal deviation of the warp lines of the circuit board with the modified glass fiber cloth is between 1.65 picoseconds and 7.42 picoseconds.
8. The improved glass fiber cloth according to claim 1, characterized in that, The average signal deviation of the weft lines of the circuit board with the modified glass fiber cloth is between 0.28 picoseconds and 1.49 picoseconds, and the maximum signal deviation of the weft lines of the circuit board with the modified glass fiber cloth is between 1.07 picoseconds and 2.62 picoseconds.
9. The improved glass fiber cloth according to claim 1, characterized in that, The warp yarns are of type E225, have a warp density between 63 yarns / inch and 69 yarns / inch, and a warp gap between 0.033 mm and 0.060 mm. The weft yarns are of type DE300 or D450, have a weft density between 48 yarns / inch and 72 yarns / inch, and a weft gap between 0.039 mm and 0.098 mm. The basis weight of the modified fiberglass cloth is the same as that of 2116 or 3313 fabric.
10. The improved glass fiber cloth according to claim 9, characterized in that, The modified glass fiber cloth has a density between 78 g / m 2 Up to 108 g / m 2 The basis weight, thickness between 0.068 mm and 0.092 mm, and open fiber content between 67% and 82%.
11. The improved glass fiber cloth according to claim 1, characterized in that, The warp yarns are of type D450, have a warp density between 68 yarns / inch and 74 yarns / inch, and a warp gap between 0.087 mm and 0.098 mm. The weft yarns are of type D900 or D600, have a weft density between 62 yarns / inch and 77 yarns / inch, and a weft gap between 0.012 mm and 0.033 mm. The basis weight of the modified fiberglass cloth is the same as that of 1078 or 1280 fabric.
12. The improved glass fiber cloth according to claim 11, characterized in that, The modified glass fiber cloth has a density between 45 g / m 2 Up to 55 g / m 2 The basis weight, thickness between 0.041 mm and 0.049 mm, and open fiber content between 67% and 72%.