“Scotch” Brand Sureface Protective Tape

No. 331T

1. Introduction:

This tape is vinyl choride film uniformely coated with acrylic adhesive. This tape was developed specially for the protection of printed circuit board, the protection in processing and protection in transit of stainless steel, and aluminum boards, the cure of window pane.

2.Construction:

Backing: Vinyl Chloride Film

Adhesive: Acrylate

3. Characteristics:

(1)Two colors of transparent and blue transparent are available.

(2)Indoor and outdoor weatherabilities are excellent.

(3)There is practically no residue of adhesive when peeling the tape after use.

(4)Because of no silicon back treatment there is no trouble of silicon transfer when in use to printed circuit board.

4. Average Physical Properties:

Item

/

Unit

/

Average physical property

Total thickness / mm / 0.070
Tensile Strength at break / kg/25mm / 5
Elongation at break / % / 300
Adhesion (180 peel) / g/25mm / 65

[Test method]- based on JIS Z 0.237

Adherend : Stainless steel board : treated by abrading with #280 abrasive preparation condition for test samples.

2kg roller, 300mm/mimutes, 1 receiprocating motion, allowing to leave for 20 minutes.

Measurement condition : 300 mm/min.

5. Adhesion after aging by any adherends (180°peel):

Adherend

/

Initial value

/

Aging test

/ *
Stainless steel board / 65 / 170 / 260
A.B.S. board / 150 / 260 / 340
Polycarbonate board / 230 / 250 / 290

* Humidity, heat and accelerated aging test

(Unit : g/25mm)

[Test method]

Adherend : Stainless steel board : treated by abrading with #280 abrasive

Aging test : Measured after having left in a room for three months after application

Humidity, heat and accelerated aging test : Measured after having left for two weeks ; 50℃×95%RH

6. Heat resistance:

Adherend / 90℃ / 120℃ / 150℃ / 160℃ / 180℃ / 190℃
Stainless steel board / ○ / ○ / ○ / ○ / ○ / ○
Aluminum board / ○ / ○ / ○ / ○ / ○ / ○
Glass board / ○ / ○ / ○ / ○ / ○ / ×

○: No residue of adhesive

△: Slight residue of adhesive

×: Residue of adhesive

[Test method]

Preparation condition : for test samples

2kg roller, 300mm/minutes, one reciprocating motion

Measured after having left for 60 minutes at each ambient temperature

Measurement method : After taking out test samples, the tape in the direction of 180 degrees with quick motion and observe the status of surface.

7. Chemical resistance:

Adherend / MEK / Ethanol / Kerosin / Water
Stainless steel board / ○ / ○ / ○ / ○
Aluminum board / ○ / ○ / ○ / ○
Glass board / ○ / ○ / ○ / ○

○: No residue of adhesive

△: Slight residue of adhesive

×: Residue of adhesive

[Test method]

Preparation condition for test samples

2kg roller, 300mm/minutes, one reciprocating motion, dipping for 20 minutes in respective chemicals

Measured method : After having allowed to dry, peeling in 180 degrees direction to observe the status of surface.

8. Application:

(1)Vapor masking when plating PC board.

(2)The protection of stainless steel and aluminum boards when in transit and storage.

(3)The cure of window pane.

Note: This technical information and data should be considered representative or typical only and should not be used for specification purpose.