Flexible sheet testing method
A detection method and sheet technology, which is applied in measuring devices, analytical materials, material thermal analysis, etc., can solve the problems of incomplete testing of flexible sheets, delamination, voids, etc.
Active Publication Date: 2021-06-25
GUANGZHOU FASTPRINT CIRCUIT TECH +2
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Problems solved by technology
[0003] Before the flexible sheet is applied to electronic products, it is necessary to test the flexible sheet, but the traditional test method is not comprehensive enough for the flexible sheet, and after it is applied to production, there will be quality risks such as delamination and voids caused by heat resistance problems
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[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0030] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...
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Abstract
The invention discloses a flexible sheet detection method, which comprises the following steps: processing the flexible sheet to obtain a test sheet, the test sheet includes a copper foil layer and a substrate layer arranged in sequence, and the area of the copper foil layer is smaller than the substrate The area of the layer; the test board is placed in a heated and humidified environment; the copper foil layer of the test board is heated. In the above-mentioned flexible sheet detection method, the flexible sheet is processed into a test sheet and placed in a heated and humidified environment to make the substrate layer absorb moisture, and then the copper foil layer of the test sheet is heated. If the heat resistance of the flexible sheet is not good , Quality defects such as delamination or voids will occur at the joint between the substrate layer and the copper foil layer. Compared with the traditional test method, the above-mentioned flexible sheet testing method can detect the heat resistance of the flexible sheet under the condition of moisture absorption, and judge whether the flexible sheet will produce decomposition due to poor heat resistance under the condition of moisture absorption. Defects such as layers or voids.
Description
technical field [0001] The invention relates to the technical field of circuit board detection, in particular to a flexible board detection method. Background technique [0002] With the rapid development of electronic products in the direction of miniaturization, high density, high integration and multi-function, the requirements for flexible sheets are getting higher and higher, and the renewal speed of flexible materials is also getting faster and faster. [0003] Before the flexible sheet is applied to electronic products, it is necessary to test the flexible sheet, but the traditional test method is not comprehensive enough for the flexible sheet, and after it is applied to production, there will be quality risks such as delamination and voids caused by heat resistance problems . Contents of the invention [0004] Based on this, the present invention overcomes the defects of the prior art and provides a flexible plate testing method capable of testing the heat resist...
Claims
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IPC IPC(8): G01N25/00G01R31/28
CPCG01N25/00G01R31/2801
Inventor 李冲林楚涛李志东
Owner GUANGZHOU FASTPRINT CIRCUIT TECH