PRODUCTS -

PRODUCTS

- Products -

PP (Polypropylene)

A universal-purpose plastic with low specific gravity and excellent hinge properties

Overview

Many of the properties of PP (polypropylene) is similar to those of PE (polyethylene), but stress grinding properties, transparency, and the tensile strength for PE (polyethylene) is superior.

Features

① Light weight property
(belongs to the lowest group of specific gravity)
② Distinctive hinge property
(resistant to repeated bending)
③ Food hygiene
(conforms to Food Sanitation Law)
④ Withstands stress crushing
⑤ Good surface exterior
(good surface gloss, not easily scratched)

PP's most outstanding properties compared with other similar plastics are specific gravity, mechanical strength, bending fatigue resistance, heat resistance, electrical properties, chemical resistance, etc. Its light specific gravity is second to TPX and about 60% of PVC. Its mechanical strength being superior to HDPE, PP is a perfect material where yield point, tensile strength, compressive strength, elasticity modulus are required. It is chemically stable with the exception of sulfuric acid and nitric acid. PP has the same opaque milky white color as PE.

The greatest feature of PP is its resistance to repeated bending and useful in making hinges (which is equivalent to the conventional joint coupling) in which the main body and the lid is molded altogether. It is unparalleled by any other industrial materials and plastics.

Its defect compared with PE is vulnerability shock at a low temperature and ultraviolet rays. To complement this defect, a copolymer of synthetic rubber and PE is being developed.

- Dimension -

PP Rods
Diameter(mm)	Tolerance(mm)	Length(mm)
Diameter(mm)	Tolerance(mm)	L1000	L3000
15	+0.1 ~ +1.0	1000	3000
20		1000	3000
25		1000	3000
30	+0.2 ~ +1.5	1000	3000
35	+0.2 ~ +1.5	1000	3000
40	+0.2 ~ +2.5	1000	3000
45		1000	3000
50		1000	3000
55		1000	3000
60	+0.5 ~ +3.0	1000	3000
65		1000	3000
70		1000	3000
75		1000	3000
80		1000	3000
85		1000	3000
90	+0.5 ~ +3.5	1000	3000
95		1000	3000
100		1000	3000
110		1000	3000
120	+1.0 ~ +4.5	1000	3000
130		1000	3000
140		1000	3000
150	+1.5 ~ +6.0	1000	3000
160		1000	3000
180		1000	3000
200	+2.0 ~ +7.0	1000	3000
210		1000	3000
250		1000	3000

PP Board
Thickness(mm)	Tolerance(mm)	Specifications
Thickness(mm)	Tolerance(mm)	1000 X 2000	1200 x 2400
3	-0.2 ~ +0.3	1000 X 2000	1200 x 2400
4		1000 X 2000	1200 x 2400
5		1000 X 2000	1200 x 2400
6	-0.3 ~ +0.4	1000 X 2000	1200 x 2400
8		1000 X 2000	1200 x 2400
10		1000 X 2000	1200 x 2400
12	+0.1 ~ +1.5	1000 X 2000	1200 x 2400
15	+0.1 ~ +1.5	1000 X 2000	1200 x 2400
20	+0.1 ~ +2.0	1000 X 2000	1200 x 2400
25		1000 X 2000	1200 x 2400
30		1000 X 2000	1200 x 2400
35	+0.8 ~ +4.0	1000 X 2000	1200 x 2400
40		1000 X 2000	1200 x 2400
45		1000 X 2000	1200 x 2400
50	+0.8 ~ +4.5	1000 X 2000	1200 x 2400
60	+0.8 ~ +4.5	1000 X 2000	1200 x 2400
70	+1.0 ~ +8.0	1000 X 2000	1200 x 2400
80		1000 X 2000	1200 x 2400
100		1000 X 2000	1200 x 2400
110	+1 ~ +4	1000 X 2000	1200 x 2400
120		1000 X 2000	1200 x 2400
130		1000 X 2000	1200 x 2400
140		1000 X 2000	1200 x 2400
150		1000 X 2000	1200 x 2400

- Physical property -

Varieties				PP
Items		Test Method ASTM	Unit	PP
specific gravity		D-792	G/㎠	0.91
Tensile strength		D-638	MPa {kgf/㎠}	35 {360}
Elongation		D-638	%	30
Tensile Modulus		D-638	MPa {kgf/㎠}	1177 {12}
Compressive strength	Yield point	D-695	MPa {kgf/㎠}	-
Compressive strength	5%Transformation (10%Transformation)	D-695	MPa {4.6kgf/㎠}	49 {500}}
Flexural strength		D-790	MPa {kgf/㎠}	-
Flexural modulus		D-790	MPa {10⁶kgf/㎠}	-
IZOD Notched Impact value		D-256	J/m{kgf•cm/ 2.54cm}	39 {10}
Rockwell hardness		D-785	R-Scale	110
Shorer hardness		D-785	D type	77
Melting point		-	℃	120
Heat Deflection Temperature	0.445MPa {4.6kgf / ㎠}	D-648	℃	105
Heat Deflection Temperature	1.820MPa {18.6kgf / ㎠}	D-648	℃ ℃	80
Continuous use temperature		-	℃
Coefficient of Linear Thermal Expansion		D-696	x10⁵/℃	11
Absorption(Underwater, Equilibrium) (Underwater, 24hrs)		D-570 D-570	% %	0.01 0.01
Volume resistivity		D-257	Ω•m {Ω•cm}	> 10¹⁴ {>10¹⁶}
Breakdown voltage Permittivity 10⁶Hz Dielectric loss tangent10⁶Hz		D-149 D-150 D-150	Kv/mm - -	- - -
Combustibility		(UL94)	-	HB
Chemical resistance	Oil acid Alkaline Organic solvents	- - - -	△ △ ○ ○