Comparison of coating and casting processes in TPU hot melt film production line
Time of issue:2024-10-18 14:54
source：
author：
The coating process and casting process of TPU hot melt film production line are two commonly used methods to prepare hot melt film. They have some differences in principle, equipment and process flow. Below I will introduce the characteristics and differences of these two processes in detail.
Coating process:
Coating process is the process of coating hot melt adhesive uniformly on the substrate through the coating head, and then forming a film by drying, cooling and other technological steps.
Features:
(1) High production efficiency: the coating process can achieve continuous production and high production efficiency.
(2) Uniform film preparation: the film coating process can achieve accurate control of the film thickness, and the uniformity of the prepared film is good.
(3) Wide applicability: the film coating process is suitable for the preparation of hot melt film of different thickness and different purposes.
Casting process:
Casting process is a process in which hot melt adhesive is extruded into a thin film by an extruder, and then a thin film is formed by cooling, stretching and other process steps.
Features:
(1) Fast production speed: the casting process can achieve high-speed extrusion and fast production speed.
(2) The preparation of film wide: casting process can prepare a wide hot melt film, suitable for large area applications.
(3) Good mechanical properties: The casting process can improve the mechanical properties of the hot melt film by drawing and other process steps.
In SUMMARY:
Both the coating process and casting process are commonly used to prepare TPU hot melt adhesive film. The film coating technology is suitable for preparing hot melt film with thin thickness and high uniformity. The casting process is suitable for preparing hot melt film with wide width and high mechanical properties. The choice of which process method should be based on the specific product requirements, production efficiency and equipment conditions and other factors for comprehensive consideration.
last page
next page
last page
next page
DOWREN NEW MATERIAL (HENAN) CO.,LTD
TELL：Selina.Liu +86-0393-8993626 / +86 18137458807
ADD：150 meters north of the intersection of Zhongyuan Road and Pushang Road, Puyang City,Henan Province
EMAIL：dowren@dowren.com
WhatsApp (+86 18137458807)