Page 64 - Plastics News July 2018

produCt news

GMA has launched the new three-layer composite hollow die

MA has launched the new three-layer composite On chart 1, from the compression test, we can see the
Ghollow die. Through special drainage manifold design, bearing capacity of PP micro-foaming hollow board (Pic 1)
customers are able to save almost 50% material of surface with weight 660g is the same as PP hollow board with 750g,
when applying on hollow board. On the condition of not this result proves that the micro-foaming technique not only
effecting limited weight, it can reach the goals of saving makes PP hollow board lightweight, but also increases the
material, increasing customers’ production profit by means bearing capacity and saves about 15% material cost. GMA
of micro-foaming technique. This design has already three-layer composite hollow die helps users to save 50% cost
patented and applied on customers’ extruding machine
and received the wide applause afterward. of color master batch and brings users quite great benefit.
Max kilogram-force (kgf)
From simple single layer to multi-layer construction, grid- PP foaming PP foaming PP foaming PP hollow
shaped, X-shaped to irregular-shaped design of hollow die, hollow board hollow board hollow board board
the technical difficulty point of traditional hollow die is Weight of 596g 660g 730g 750g
how to avoid sunken surface problem. For example, UV is square meter
usually used on coating on Test #1 730 1030 1490 1050
999
hollow board surface for Test #2 710 1015 1480 1030
720
1040
Average value
1485
resisting ultraviolet rays
and enhancing weather Table 1: compression test, based on board thickness 4mm
resistance, but the sunken Note:
surface problem causes 1. Lab conditions-temperature: 23±2°C
the reduction of product 2. Lab conditions- relative humidity: 50±5%
strength and increasing 3. Testing speed: 1.3mm/min
production cost, Few
Traditional hollow die design is easy years ago, GMA group
to case sunken surface of has already successfully
overcome this difficulty
point of hollow die, and
this technique is realized
Patented three-layer compound
micro-foaming hollow board made no matter in applying on
by GMA new hollow die producing PC hollow board
with UV coating layer or PP two-tone compound hollow
board, via GMA new hollow die , user can save about 15%
of surface material.
PP hollow board is one kind of mature products and became
the market of price competition recently years. In order to The enlarged view of micro-foaming hollow board section
increase customers’ profit, GMA develops the new hollow GMA always stands in customers’ position and to improve
die, and it can help user save at least 50% surface material quality of die, to increase product profit for customers as
cost can be saved, through three- layer construction well as create more additional value of product.
design with micro-foaming production technology, to The advantages of three-layer composite hollow die for
expend multi-application on PP composite board. By customer:
continuous experiment and amendment, compared with 1. Reduce production cost
PP hollow board, the new PP micro-foaming hollow board 2. Enhance practicality of product (lightweight, but also
is more lightweight, but the bearing capacity is the same, increases the bearing capacity)
even raise the bearing capacity. This is revolutionized 3. Able to coat functional material on surface, multi-
achievement of PP hollow board. application for expending additional value of product.

Plastics News July 2018 64