Extrusion International 4-2018

35 Extrusion International 4/2018 On chart 1, from the compression test, we can see the bearing capacity of PP micro-foaming hollow board (Picture 1) with weight 660g is the same as PP hol- low board with 750g. 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 hollowdie helps us- ers to save 50%cost of color master batch and brings users quite great benefit. Note: 1. Lab conditions-temperature: 23±2°C 2. Lab conditions- relative humidity: 50±5% 3. Testing speed: 1.3mm/min GMA always stands in customers’ position and to improve quality of die, to increase product profit for customers aswell as cre- ate more additional value of product. The advantages of three-layer composite hol- lowdie for the customer: 1. Reduce production cost 2. Enhance practicality of product (lightweight, but also increases the bear- ing capacity) 3. Able to coat functional material on sur- face, multi-application for expending ad- ditional value of product. GMA Machinery Enterprise Co., Ltd. No.28 Lane 362 Sec. 2 Yung Hsing Rd Wu Chi Dist Taichung 435 Taiwan www.gmatw.com From simple single layer to multi-layer construction, grid-shaped, X-shaped to irregular-shaped design of hollow die, the technical difficulty point of tradition- al hollow die is how to avoid sunken sur- face problem. For example, UV is usually used on coating on hollow board surface for resisting ultraviolet rays and enhanc- ing weather resistance, but the sunken surface problem causes the reduction of product strength and increasing produc- tion cost. Few years ago, GMA group has already successfully overcome this diffi- culty point of hollow die, and this tech- nique is realized no matter in applying on producing PC hollow board with UV coating layer or PP two-tone compound hollow board. Via GMA’s new hollow New Three-Layer Composite Hollow Die launched PERIPHERY die, users can save about 15% of surface material. ThePPhollowboard is onekindofmature product and became a market of price competition recently years. In order to in- crease customers’ profit, GMA develops this new hollow die, and it can help users to save at least 50% surface material cost, through three-layer construction design with micro-foaming production technol- ogy, to expend multi-application on PP composite board. By continuous experi- ment and amendment, comparedwith PP hollow board, the new PP micro-foaming hollowboard is more lightweight, but the bearing capacity is the same, maybe even higher. This is revolutionized achievement of PP hollowboard. GMA has launched the new three-layer composite hollow 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 of micro-foaming technique. This design has already been patented and used by customers on extruders and then received great applause Max kilogram-force (kgf) PP foaming hollow board PP foaming hollow board PP foaming hollow board PP hollow board Weight of square meter 596g 660g 730g 750g Test #1 730 1030 1490 1050 Test #2 710 999 1480 1030 Average value 720 1015 1485 1040 Chart 1: compression test, based on board thickness 4mm Picture 1: Traditional hollow die design is easy to case sunken surface of Picture 2: Patented three-layer compound micro-foaming hollow board made by GMA new hollow die Picture 3: The enlarged view of micro- foaming hollow board section