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Foam core: Polystyrene

  • G.P.P.S (General Purpose Polystyrene) resin manufactured by
    LG Chemical Ltd. www.lgchem.com
  • Grade: 25SPE
  • Application & Feature: Panel, Food containers under the food and health
    standard of FDA in USA, Electric components and Coating

Item

Unit

Value

Physical

Melt Index (ASTM D1238)

g/10min.

3

Mold Shrinkage (ASTM D955)

%

0.4 ~ 0.8

Mechanical

Tensile Strength (ASTM D638)

kg/㎠

530

Tensile Modulus (ASTM D638)

kg/㎠

29,400

Elongation at Break (ASTM D638)

%

4

Flexural Strength (ASTM D790)

kg/㎠

1,000

Flexural Modulus (ASTM D790)

kg/㎠

33,300

Izod Impact Strength (ASTM D256)

kg.㎝/㎝

1

Rockwell Hardness (ASTM D785) *T.C.: R-scale

120

Thermal

Heat Deflection Temp (ASTM D648)

88

Vicat Softening Temp. (ASTM D1525)

103

Flammability

Test UL 94

class

HB

Test IEC 707

min/min

FH3-28

Standard liners: Paper clay coated

Item

Unit

Value

120GSM

150GSM

200GSM

Basis Weight

g/㎡

120±3%

150±3%

200±5%

Caliper

112±3%

143±3%

202±5%

Smoothness

sec

100↑

90↑

50↑

pH Value

7.2

7.2

7.2

Whiteness

%

126±3%

130±3%

126±3%

Brightness

%

100±3%

102±3%

100±3%

Ref.- 100% virgin pulp with chemical treatment

  • No lignin contained
  • Pulp: US Northern Mix, US Southern Mix, Aspen
  • Paper composition: Pulp, Filler, Additives

Film liners for digital printing: PE matte film

  • Thickness: 25 ㎛
  • Finish: On standard paper liners

Aluminum liners

  • Aluminum thickness : 6.3㎛
  • White film thickness (SOL) : 25㎛
  • Application & Feature: Heavy-duty mounting

Item

Unit

SOL

PM

Value

Value

Paper

Aluminum

Paper (Acid-free)

Aluminum

Basis Weight

g/㎡

200±5%

0.018780±3

90±3%

0.018780±3

Caliper

202±5%

6.3±5%

103±3%

6.3±5%

Smoothness

sec

50↑

60↑

pH Value

7.2

7.5 ~ 8.5

6.7

7.5 ~ 8.5

Whiteness

%

126±3%

112±3%

Brightness

%

100±3%

98±3%

Ref.- 100% virgin pulp with chemical treatment

  • No lignin contained
  • Pulp: US Northern Mix, US Southern Mix, Aspen
  • Paper composition: Pulp, Filler, Additives

Acid-free liners: Paper uncoated

Item

Unit

Value

120GSM

150GSM

Basis Weight

g/㎡

120±3%

150±4%

Caliper

139±3%

162±3%

Smoothness

sec

45↑

30↑

pH Value

6.7

6.7

Whiteness

%

112±3%

100±5%

Brightness

%

98±3%

98±2%

Ref.- 100% virgin pulp with chemical treatment

  • No lignin contained
  • Pulp: US Northern Mix, US Southern Mix, Aspen
  • Paper composition: Pulp, Filler, Additives

Color liners: Paper uncoated

Item

Unit

Value

Basis Weight

g/㎡

125±5%

Caliper

160±10%

Smoothness

sec

20↑

Surface pH

7.2

Ref.- 100% virgin pulp with chemical treatment

  • No lignin contained
  • Pulp: US Northern Mix, US Southern Mix, Aspen
  • Paper composition: Pulp, Filler, Additives

Glue

Item

Glue for lamination of paper on foam core

Glue for Self-Adhesive

Appearance

Milky white emulsion

Yellow transparent viscous

Non-volotile(WT%)

50±1%

62±2%

Viscosity

1500~2000(CPS/23℃)

4000±500(CPS/25℃)

pH

7

4

Main composition

Vinyl Acetate Monomer

Acrylic ester copolymer

Vinyl Acetate Copolymer

Ethyl Acetat, Toluene

Type

EVA (Ethylene Vinyl Acetate)

PSA (Pressure Sensitive Adhesive)

Solubility in water

Dilute

Solvent-solution

Basis Weight (g)

25 ~ 35

35 ~ 45

Caliper (㎛)

20 ~ 31

40 ~ 50

Release paper weight (g)

150±3

Release paper caliper (㎛)

160±3

Dimensional tolerances

  • Thickness: + - 0.5mm (1/50”)
  • Length and Width: + - 2.1mm (1/12”)
  • Squareness: Diagonals within 3.2mm (1/8”)
  • Flatness (Standard liners) : Bend of 10 degrees compared to straight line
  • Flatness (Adhesive liners) : Bend of 15 degrees compared to straight line
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