CN108181342A - Flexible sheet detection method - Google Patents
Flexible sheet detection method Download PDFInfo
- Publication number
- CN108181342A CN108181342A CN201711311688.5A CN201711311688A CN108181342A CN 108181342 A CN108181342 A CN 108181342A CN 201711311688 A CN201711311688 A CN 201711311688A CN 108181342 A CN108181342 A CN 108181342A
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- copper foil
- flexible sheet
- foil layer
- layer
- plank
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a kind of flexible sheet detection methods, include the following steps：Flexible sheet is handled to obtain test plank, the test plank includes the copper foil layer and substrate layer that set gradually, and the area of the copper foil layer is less than the area of the substrate layer；The test plank is positioned in heating and moistening environment；The copper foil layer of the test plank is heated.Above-mentioned flexible sheet detection method, flexible sheet is processed as test plank and is positioned in heating and moistening environment, make the substrate layer moisture absorption, then the copper foil layer for testing plank is heated, if the heat resistance of flexible sheet is bad at this time, the quality defects such as layering or cavity can be generated in the joint of substrate layer and copper foil layer.Above-mentioned flexible sheet detection method compared to traditional test method, flexible sheet can be detected in the heat resistance in the case of the moisture absorption and judge whether the defects of being layered or is empty can be generated since heat resistance is bad in flexible sheet in the case of the moisture absorption.
Description
Technical field
The present invention relates to technical field of circuit board detection, more particularly to a kind of flexible sheet detection method.
Background technology
With direction rapid development of the electronic product to miniaturization, densification, high integration and multifunction, to used
The requirement of flexible sheet is also higher and higher, and the renewal speed of flexible material is also getting faster.
Before flexible sheet is applied to electronic product, need to test flexible sheet, but traditional test method
It is not comprehensive enough to the test of flexible sheet, applied to will occur after production due to layering, cavity etc. caused by temperature resistance problem
Quality risk.
Invention content
Based on this, the defects of the invention reside in the prior art is overcome, provide it is a kind of can to the heat resistance of flexible sheet into
The flexible sheet detection method of row detection.
Its technical solution is as follows：
A kind of flexible sheet detection method, includes the following steps：
Flexible sheet is handled to obtain test plank, the test plank includes the copper foil layer and substrate that set gradually
Layer, the area of the copper foil layer are less than the area of the substrate layer；
The test plank is positioned in heating and moistening environment；
The copper foil layer of the test plank is heated.
Flexible sheet is processed as the test plank containing copper foil layer and substrate layer by above-mentioned flexible sheet detection method, and
The area of copper foil layer is less than the area of substrate layer, then test plank is positioned in heating and moistening environment, makes the substrate layer moisture absorption, by
Only have side to be equipped with copper foil layer in substrate layer, the area of substrate layer is more than the area of copper foil layer, the both sides of substrate layer can the moisture absorption,
The moisture absorption of substrate layer is more abundant, and then the copper foil layer for testing plank is heated, if the heat resistance of flexible sheet is bad at this time,
The quality defects such as layering or cavity can be generated in the joint of substrate layer and copper foil layer, if otherwise there is not layering, cavity etc.
Situation then illustrates that the heat resistance of flexible sheet is preferable.Therefore above-mentioned flexible sheet detection method, compared to traditional test side
Method can be detected flexible sheet in the heat resistance in the case of the moisture absorption and judge in the case of the moisture absorption whether is flexible sheet
The defects of layering or cavity can be generated since heat resistance is bad.
Further, the above-mentioned copper foil layer to the test plank heats, and specifically includes following steps：
Wicking processing is carried out to the copper foil layer of the test plank.
Further, the minimum range between the outer edge of the outer edge of the copper foil layer and the substrate layer is more than or waits
In 25.4mm.
Further, it is further comprising the steps of before the above-mentioned copper foil layer by the test plank is heated：
Scaling powder is coated on copper foil layer.
Further, during above-mentioned wicking processing, the temperature of tin is 285 DEG C~291 DEG C.
Further, the above-mentioned copper foil layer to the test plank carries out wicking processing, specifically includes following steps：
By the copper foil layer wicking of the test plank three times, each wicking duration is 10s.
Further, the temperature range of above-mentioned heating and moistening is 21 DEG C~35 DEG C, and humidity range is 45%~65%.
Further, the duration of above-mentioned heating and moistening is 5~30 days.
Further, the copper foil layer is circular slab or square plate.
Further, when the copper foil layer is circular slab, the diameter of the copper foil layer is greater than or equal to 50.8mm；It is or described
When copper foil layer is square plate, the length and width of the copper foil layer are all higher than or equal to 50.8mm.
Description of the drawings
Fig. 1 is the flow diagram one of the flexible sheet detection method described in the embodiment of the present invention；
Fig. 2 is the structure diagram of the test plank described in the embodiment of the present invention；
Fig. 3 is the flow diagram two of the flexible sheet detection method described in the embodiment of the present invention；
Fig. 4 is the cooperation schematic diagram of the test plank and tin stove described in the embodiment of the present invention.
Reference sign：
100th, plank is tested, 110, copper foil layer, 120, substrate layer, 200, tin stove.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that make to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
Heretofore described " first ", " second " do not represent specific quantity and sequence, are only used for the differentiation of title.
In one embodiment, as shown in Figures 1 and 2, detection method includes the following steps for flexible sheet：
Flexible sheet is handled to obtain test plank 100, test plank 100 includes the copper foil layer 110 set gradually
And substrate layer 120, the area of copper foil layer 110 are less than the area of substrate layer 120；
Test plank 100 is positioned in heating and moistening environment；
The copper foil layer 110 for testing plank 100 is heated.
Flexible sheet is processed as the test board containing copper foil layer 110 and substrate layer 120 by above-mentioned flexible sheet detection method
Material 100, and the area of copper foil layer 110 is less than the area of substrate layer 120, then test plank 100 is positioned over heating and moistening environment
In, make 120 moisture absorption of substrate layer, since substrate layer 120 only has side to be equipped with copper foil layer 110, the area of substrate layer 120 is more than copper foil
The area of layer 110, the both sides of substrate layer 120 can the moisture absorption, the moisture absorption of substrate layer 120 is more abundant, then to test plank 100
Copper foil layer 110 is heated, can be in the joint of substrate layer 120 and copper foil layer 110 if the heat resistance of flexible sheet is bad at this time
The quality defects such as layering or cavity are generated, if on the contrary situations such as layering, cavity do not occur, illustrate the heat resistance of flexible sheet
Preferably.Therefore above-mentioned flexible sheet detection method, can be to flexible sheet in the case of the moisture absorption compared to traditional test method
Heat resistance be detected, judge in the case of the moisture absorption whether flexible sheet can generate layering or cavity since heat resistance is bad
The defects of.
Further, since the copper foil layer 110 in flexible sheet seldom sets circuit, therefore in flexible sheet in outer edge
In process, copper foil layer 110 and substrate layer 120 can be allowed to occur situations such as layering, cavity in outer peripheral joint, but on
The situation of stating can test the heat resistance of flexible sheet and interfere, therefore the area of copper foil layer 110 is made to be less than the face of substrate layer 120
Product reduces the area of copper foil layer 110, ensure that quality is not present in copper foil layer 110 and the joint of substrate layer 120 before test
Defect can preferably be detected the heat resistance of flexible sheet.
Optionally, if flexible sheet is multi-layer board, first flexible sheet can be split, becoming only has substrate layer
And the test plank 100 of copper foil layer.
Further, as shown in Figures 3 and 4, it is above-mentioned that the copper foil layer 110 for testing plank 100 is heated, it specifically includes
Following steps：
Wicking processing is carried out to the copper foil layer 110 for testing plank 100.
Copper foil layer 110 can both be heated at this time, while can also simulate the production environment of flexible sheet, it is soft convenient for understanding
Whether the production process of property plank can have an impact the heat resistance of flexible sheet.
Specifically, as shown in figure 4, carrying out wicking processing, tin to the copper foil layer 110 for testing plank 100 using tin stove 200
Stove 200 makes the tin in tin stove 200 keep liquid by heating.
Specifically, above-mentioned wicking processing is flat on for that will test plank 100 in tin stove 200, at least makes test plank 100
Copper foil layer 110 is submerged in liquid tin.Liquid tin can carry out the junction of copper foil layer and copper foil layer and substrate layer fully to add at this time
Heat, convenient for finding the quality defect of test plank 100.In addition, 120 part of substrate layer can be also immersed in liquid tin.
Further, the minimum range between the outer edge of the outer edge of copper foil layer 110 and substrate layer 120 is greater than or equal to
25.4mm.Can be further ensured that at this time the two sides of substrate layer 120 can the abundant moisture absorption, be conducive to preferably inhale in flexible sheet
In the case of tide, the heat resistance of flexible sheet is detected, while substrate layer 120 can be contacted preferably with tin, it can be 360 degree
Seal the heat that copper foil layer 110 is subject to so that copper foil layer 110 is effectively contacted with tin, and effect becomes apparent from.In addition, above structure is just
In by tool clamp substrate layer 120 complete wicking operate, while tool clamping substrate layer 120 position from substrate layer 120 with
Copper foil layer 110 it is distant, substrate layer 120 and copper foil layer 110 will not be made to generate layering, cavity, shadow because of situations such as clamping
Ring testing result.
Further, as shown in figure 3, it is above-mentioned by test plank 100 copper foil layer 110 heated before, further include with
Lower step：
Scaling powder is coated on copper foil layer 110.
Scaling powder makes contact of the copper foil layer 110 with liquid tin more abundant, is conducive to the detection to the heat resistance of flexible sheet.
Further, during above-mentioned wicking processing, the temperature of tin is 285 DEG C~291 DEG C.Flexible sheet can be also simulated at this time
Production environment, convenient for understanding when flexible sheet is by entire production process after, if understand due to production environment and production technology
It influences, flexible sheet is caused to generate the quality defects such as layering, cavity.
Specifically, during above-mentioned wicking processing, the temperature of tin is 288 DEG C.
Further, the above-mentioned copper foil layer 110 to testing plank 100 carries out wicking processing, specifically includes following steps：
By 110 wicking of copper foil layer of test plank 100 three times, each wicking duration is 10s.
It can ensure that copper foil layer 110 comes into full contact with tin, ensures the heating effect to copper foil layer 110, is conducive to soft at this time
The heat resistance of property plank is judged.
Further, the temperature range of above-mentioned heating and moistening is 21 DEG C~35 DEG C, and humidity range is 45%~65%.At this time
The production environment of flexible sheet can be simulated, for understanding in the production process of flexible sheet, whether production environment can be to soft
The heat resistance of property plank has an impact.
Optionally, humidity can be also set above to 65%, can ensure the abundant moisture absorption of substrate layer at this time.
Further, the duration of above-mentioned heating and moistening is 5~30 days.It can ensure that substrate layer 120 is adequately inhaled at this time
Tide by improving the duration of heating and moistening, improves test plank 100 and the probability of quality problem occurs, preferably to judge
The heat resistance of flexible sheet.
Optionally, the duration of above-mentioned heating and moistening is 15 days.When test plank 100 is in above-mentioned heating and moistening environment
Time when being more than 15 days, the moisture absorption effect of substrate layer 120 will appear larger decrease, therefore the efficiency to improve test, can
The duration of above-mentioned heating and moistening is set as 15 days.
Further, as shown in Fig. 2, copper foil layer 110 is circular slab or square plate.At this time in the range of copper foil layer 110, copper
Layers of foil 110 is completely attached to substrate layer 120, and whether the joint convenient for understanding copper foil layer 110 and substrate layer 120 can be due to flexibility
Quality defect occurs for the heat resistance of plank.
Optionally, substrate layer 120 can be processed, the shape for making substrate layer 120 is square plate or circular slab etc..
Further, when copper foil layer 110 is circular slab, the diameter of copper foil layer 110 is greater than or equal to 50.8mm；Or copper foil layer
110 be square plate when, the length and width of copper foil layer 110 are all higher than or equal to 50.8mm.The area of copper foil layer 110 is bigger, then copper foil layer
110 areas contacted with substrate layer 120 are bigger, more it is possible that measuring when 120 moisture absorption of substrate layer, copper foil layer 110 and substrate
There is situations such as layering, cavity in the case that heated in the joint of layer 120, if otherwise there is not situations such as layering, cavity,
Illustrate that the heat resistance of flexible sheet is preferable.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of flexible sheet detection method, which is characterized in that include the following steps：
Flexible sheet is handled to obtain test plank, the test plank includes copper foil layer and substrate layer, the copper foil layer
Area be less than the substrate layer area；
The test plank is positioned in heating and moistening environment；
The copper foil layer of the test plank is heated.
2. flexible sheet detection method according to claim 1, which is characterized in that the above-mentioned copper foil to the test plank
Layer is heated, and specifically includes following steps：
Wicking processing is carried out to the copper foil layer of the test plank.
3. flexible sheet detection method according to claim 2, which is characterized in that the outer edge of the copper foil layer with it is described
Minimum range between the outer edge of substrate layer is greater than or equal to 25.4mm.
4. flexible sheet detection method according to claim 2, which is characterized in that the above-mentioned copper foil by the test plank
It is further comprising the steps of before layer is heated：
Scaling powder is coated on copper foil layer.
5. flexible sheet detection method according to claim 2, which is characterized in that during above-mentioned wicking processing, the temperature of tin
It is 285 DEG C~291 DEG C.
6. flexible sheet detection method according to claim 2, which is characterized in that the above-mentioned copper foil to the test plank
Layer carries out wicking processing, specifically includes following steps：
By the copper foil layer wicking of the test plank three times, each wicking duration is 10s.
7. according to claim 1-6 any one of them flexible sheet detection methods, which is characterized in that the temperature of above-mentioned heating and moistening
Ranging from 21 DEG C~35 DEG C of degree, humidity range are 45%~65%.
8. according to claim 1-6 any one of them flexible sheet detection methods, which is characterized in that above-mentioned heating and moistening is held
The continuous time is 5~30 days.
9. according to claim 1-6 any one of them flexible sheet detection methods, which is characterized in that the copper foil layer is circle
Plate or square plate.
10. flexible sheet detection method according to claim 9, which is characterized in that when the copper foil layer is circular slab, institute
The diameter for stating copper foil layer is greater than or equal to 50.8mm；Or the copper foil layer be square plate when, the length and width of the copper foil layer are all higher than
Or equal to 50.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311688.5A CN108181342B (en) | 2017-12-11 | 2017-12-11 | Flexible plate detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311688.5A CN108181342B (en) | 2017-12-11 | 2017-12-11 | Flexible plate detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108181342A true CN108181342A (en) | 2018-06-19 |
| CN108181342B CN108181342B (en) | 2021-06-25 |
Family
ID=62546022
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711311688.5A Active CN108181342B (en) | 2017-12-11 | 2017-12-11 | Flexible plate detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045172A (en) * | 2019-05-22 | 2019-07-23 | 苏州昇特智能科技有限公司 | It is a kind of for measuring the device of flexible material dynamic electric property |
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| CN202770793U (en) * | 2012-08-22 | 2013-03-06 | 广东生益科技股份有限公司 | Automatic test material soldering- resistance tin time-stratification device |
| CN103265810A (en) * | 2013-05-29 | 2013-08-28 | 苏州生益科技有限公司 | Resin composition for high-frequency high-speed substrate as well as prepreg and laminated board made of resin composition |
| CN103819215A (en) * | 2014-03-20 | 2014-05-28 | 李磊 | Preparation method of aluminium nitride base ceramic copper-clad plate |
| CN104245306A (en) * | 2012-04-24 | 2014-12-24 | Sk新技术株式会社 | Flexible metal clad laminate |
| CN105196649A (en) * | 2015-09-02 | 2015-12-30 | 铜陵翔宇商贸有限公司 | Copper-clad plate manufacturing method |
| CN107365476A (en) * | 2016-05-12 | 2017-11-21 | 中山台光电子材料有限公司 | Resin combination and by its obtained finished product |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245306A (en) * | 2012-04-24 | 2014-12-24 | Sk新技术株式会社 | Flexible metal clad laminate |
| CN202770793U (en) * | 2012-08-22 | 2013-03-06 | 广东生益科技股份有限公司 | Automatic test material soldering- resistance tin time-stratification device |
| CN103265810A (en) * | 2013-05-29 | 2013-08-28 | 苏州生益科技有限公司 | Resin composition for high-frequency high-speed substrate as well as prepreg and laminated board made of resin composition |
| CN103819215A (en) * | 2014-03-20 | 2014-05-28 | 李磊 | Preparation method of aluminium nitride base ceramic copper-clad plate |
| CN105196649A (en) * | 2015-09-02 | 2015-12-30 | 铜陵翔宇商贸有限公司 | Copper-clad plate manufacturing method |
| CN107365476A (en) * | 2016-05-12 | 2017-11-21 | 中山台光电子材料有限公司 | Resin combination and by its obtained finished product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045172A (en) * | 2019-05-22 | 2019-07-23 | 苏州昇特智能科技有限公司 | It is a kind of for measuring the device of flexible material dynamic electric property |
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|---|---|
| CN108181342B (en) | 2021-06-25 |
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