Composite-structure copper foil substrate and making method thereof
A technology of copper foil substrate and manufacturing method, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, lamination, etc., can solve problems such as cracking board, poor bonding force, complicated process, etc., and achieve high dimensional stability , easy processing, high stiffness effect
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[0026] Example 1: A copper foil substrate with a composite structure, such as figure 1 As shown, it is composed of a copper foil layer 101, a black polymer layer 102, a black adhesive layer 103, and a black reinforcement layer 104, wherein the black polymer layer 102 is sandwiched between the copper foil layer 101 and the black adhesive layer Between the layers 103, the black adhesive layer 103 is sandwiched between the black polymer layer 102 and the black reinforcing layer 104, and the sum of the thickness of the black polymer layer and the black adhesive layer is 6 To 50 microns.
[0027] In order to prevent the quality of the flexible printed circuit board manufactured by the copper foil substrate from inadequate bonding force, cracking, and other quality concerns, the composite structure of the copper foil substrate of the present invention can adjust the thickness of the black adhesive layer in the copper foil substrate as needed. Composition and thickness. The material o...
Example Embodiment
[0038] Embodiment 2: A composite structure copper foil substrate, such as figure 1 As shown, it is composed of a copper foil layer 101, a black polymer layer 102, a black adhesive layer 103, and a black reinforcement layer 104, wherein the black polymer layer 102 is sandwiched between the copper foil layer 101 and the black adhesive layer Between the layers 103, the black adhesive layer 103 is sandwiched between the black polymer layer 102 and the black reinforcing layer 104, and the sum of the thickness of the black polymer layer and the black adhesive layer is 5 To 50 microns.
[0039] In order to prevent the quality of the flexible printed circuit board manufactured by the copper foil substrate from inadequate bonding force, cracking, and other quality concerns, the composite structure copper foil substrate of the present invention can adjust the thickness of the black adhesive layer in the copper foil substrate as required. Composition and thickness. The material of the bla...
Example
[0049] Examples 3 to 4:
[0050] The same method as in Example 2 is used to produce a composite structure copper foil substrate product. The difference lies in the thickness of the copper foil used and the thickness of the black polymer layer, the thickness of the black adhesive layer and the thickness of the black reinforcing layer have been adjusted as shown in Table 1. Show.
[0051] The rebound force test of the composite structure copper foil substrate of the present invention is as follows:
[0052] Taking the composite structure copper foil substrate of the present invention as an experimental group, the copper foil layer of the composite structure copper foil substrate of the present invention is etched and removed for testing;
[0053] Use only reinforcing materials as a control group;
[0054] Test conditions for the rebound force test: cut the test piece into 10mm×30mm test pieces, set the test R angle to 2.35 mm, measure 5 times for each group of test pieces, calculate the ...
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