Page 62 - Plastics News December2018

PRESS RELEASE

GMA launches new three-layer composite hollow die.

MA has launched the new three-layer composite
Ghollow die. Through special drainage manifold design,
customers are able to save almost 50% material of surface
when applying on hollow board. On the condition of not
effecting limited weight, it can reach the goals of saving
material, increasing customers’ production profit by means Picture 2: Patented three-layer compound micro-foaming
of micro-foaming technique. This design has already hollow board made by GMA new hollow die
patented and applied on customers’ extruding machine PP hollow board is one kind of mature products and became
and received the wide applause afterward. the market of price competition recently years. In order to
From simple single layer to multi-layer construction, grid- increase customers’ profit, GMA develops the new hollow
shaped, X-shaped to irregular-shaped design of hollow die, and it can help user save at least 50% surface material
die, the technical difficulty point of traditional hollow cost can be saved, through three- layer construction
die is how to avoid sunken surface problem. For example, design with micro-foaming production technology , to
UV is usually used on coating on hollow board surface expend multi-application on PP composite board. By
for resisting ultraviolet rays and enhancing weather continuous experiment and amendment, compared with
resistance, but the sunken surface problem causes the PP hollow board, the new PP micro-foaming hollow board
reduction of product strength and increasing production is more lightweight, but the bearing capacity is the same,
cost, Few years ago, GMA group has already successfully even raise the bearing capacity. This is revolutionized
overcome this difficulty point of hollow die, and this achievement of PP hollow board.
technique is realized no matter in applying on producing On chart 1, from the compression test, we can see the
PC hollow board with UV coating layer or PP two-tone bearing capacity of PP micro-foaming hollow board (Pic 1)
compound hollow board, via GMA new hollow die , user with weight 660g is the same as PP hollow board with 750g,
can save about 15% of surface material. this result proves that the micro-foaming technique not
only makes PP hollow board lightweight, but also increases
the bearing capacity and saves about 15% material cost.
GMA three-layer composite hollow die helps users to save
50% cost of color master batch and brings users quite
great benefit.

Max kilogram-force (kgf)
PP PP PP PP
foaming foaming foaming hollow
hollow hollow hollow board
board board board
Weight 596g 660g 730g 750g
of square
meter
Test #1 730 1030 1490 1050
Test #2 710 999 1480 1030
Picture 1: Traditional hollow die design is easy to face Average 720 1015 1485 1040
the case of sunken surface value
Chart 1: compression test, based on board thickness 4mm

Plastics News December 2018 6264