IPC-TM-650 EN 2022 试验方法.pdf - 第261页

1 Scope This test method defines the procedure for deter- mining the bond strength of metal foils that are 18 microns thick or greater clad flexible dielectric material as nominally defined being measured with a 90° peel…

1.0

Scope

determine the release strength of the carrier

of thin copper foil in pounds per inch of width at ambient tem-

perature.

2.0

Applicable Documents

None

3.0

Test Specimen

Laminated

copper foil with carrier.

4.0

Apparatus

4.1

Force

gauge or testing machine capable of a rate of

50.8 ± 2.5 mm [2 ± 0.1 in] per minute.

5.0

Procedure

5.1 Preparation for Tests at Ambient Temperature

5.1.1

Specimens

for this test must be free from such

defects as delamination, surface wrinkles, surface measling,

surface blisters, and cracks.

5.1.2

Prepare

75 mm [3.0 in] wide peel strength specimen a

minimum of 75 mm [3.0 in] long.

5.1.2.1

Score

completely through the carrier a 25 mm [1.0

in] wide strip.

5.1.3

Peel

back the carrier on the 25 mm [1.0 in] strip

approximately 25 mm [1.0 in] so that the line of peel is per-

pendicular to the edge of the specimen.

5.2

Test Procedure

5.2.1

Clamp

each specimen on a horizontal surface with the

peeled metal strip projecting upward for 25 mm [1.0 in].

5.2.2

Grip

the end of the strip between jaws of the clamp.

5.2.3

The

jaws must cover the full width of the metal strip

and must be parallel to the line of peel.

5.2.4

Exert

the force in a vertical plane. The metal foil must

be pulled at a rate of 50 mm [2.0 in] per minute.

5.3

Evaluation

The

minimum load shall be observed and

converted to kg per mm or pounds per inch of width. If the full

width of the strip does not peel, the results shall be discarded

and another specimen tested.

6.0 Notes

None

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.4.8.4

Subject

Carrier

Release, Thin Copper

Date

1/90

Revision

—

Originating Task Group

N/A

Material

in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.

age1of1

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1 Scope This test method defines the procedure for deter-

mining the bond strength of metal foils that are 18 microns

thick or greater clad flexible dielectric material as nominally

defined being measured with a 90° peel.

2 Applicable Documents None

3 Test Specimens If a statistically sound evaluation by a

given supplier can prove that die cut and etched specimens

differ, the preparation giving the lower measurement can be

the only preparation tested. In case of conflict, the die cut

sample will be used as the referee method. The sample

preparation will be the same for as received, after solder and

after aging.

3.1 Type A – Etched Specimen

3.1.1

The test specimen shall consist of an etched conduc-

tor pattern in accordance with Figure 1. Note: Conductors

are 3.2 mm wide by 228.6 mm long [0.125 in wide by

9 in long].

3.1.2 A minimum of four specimens, two from the machine

direction (MD) and two from the transverse direction (TD),

shall be prepared for each of the procedure Methods A, C,

E. If a statistically sound evaluation by a given supplier can

prove that MD and TD measurements differ, the direction giv-

ing the lower measurement can be the only direction tested. If

the two directions are the same, only the MD direction needs

to be tested. In the event a test specimen tears during test-

ing, another test specimen will be prepared to replace it.

3.1.3 For double clad laminate, a separate sample unit shall

be prepared and tested for each side.

3.2 Type B – Die Cut Specimen

3.2.1

The test specimen shall consist of a strip of clad flex-

ible material 12.7 mm wide by 228.6 mm long [1/2 in wide by

9 in long].

3.2.2 A minimum of four specimens, two from the machine

direction and two from the transverse direction, shall be pre-

pared for each of the procedure Methods B, D, F. If a statis-

tically sound evaluation by a given supplier can prove that MD

and TD measurements differ, the direction giving the lower

measurement can be the only direction tested. If the two

directions are the same, only the MD direction needs to be

tested.

3.2.3 For double clad laminate, a separate sample unit shall

be prepared and tested for each side. The metal foil on the

non-test side may remain to provide stability to prevent tent-

ing of the specimen from the German Wheel (free wheel rotary

drum). Both samples must be the same with respect to being

with or without the non-test side metal foil.

4 Test Equipment

4.1 Testing Machine

Power driven testing machine,

crosshead autographic type, or an equivalent constant speed

drive machine.

4.2 Sample Cutter Thwing Albert sample cutter, Model

No. JDC-50, or equivalent.

4.3 Test Fixture Free wheeling rotary drum (Figure 2), slid-

ing plate (Figure 3), or equivalent. The referee fixture will be a

152.4 mm [6.0 in] diameter free wheeling rotary drum.

IPC-249-1

Figure 1 Type A Peel Strength Test Pattern

▼

3.2mm [0.125"]

228.6mm

[9"]

▼

3000 Lakeside Drive, Suite 309S

Bannockburn, IL 60015-1249

IPC-TM-650

TEST METHODS MANUAL

Number

2.4.9

Subject

Peel Strength, Flexible Dielectric Materials

Date

04/14

Revision

Originating Task Group

Flexible Circuits Test Methods Subcommittee

(D-15)

Material in this Test Methods Manual was voluntarily established by Technical Committees of IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by IPC.

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IPC-249-2

Figure 2 Free Wheeling Rotary Drum Test Fixture

6 Inch Diameter

Testing

Machine

Specimen

Testing

Fixture

Testing

Machine

IPC-249-3

Figure 3 Sliding Plate Test Fixture

▼

Specimen

.150"

Specimen Holders

Clip for

Fastening Cord

Conductor

▼

Test bed with machined grooves

to permit free movement of

specimen holders

Testing

Machine

Pulley

Clasp

Conductor

Wire

Cord

Yoke

Testing

Machine

▼

IPC-TM-650

Number

2.4.9

Subject

Peel Strength, Flexible Dielectric Materials

Date

04/14

Revision

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