Hot Rolling for Package Material Strength
Hot rolling processes for packaging materials operate within narrow temperature and pressure windows, typically between 150-200°C for thermoplastics and up to 1200°C for metal alloys. These conditions must be precisely maintained across the rolling surface to ensure uniform material properties while preventing defects like scaling, oxidation, and inconsistent thickness that can compromise package integrity.
The fundamental challenge lies in balancing thermal uniformity and mechanical pressure across the rolling interface while maintaining production speeds that meet industrial requirements.
This page brings together solutions from recent research—including heated roll systems with temperature control, under-support mechanisms for preventing curvature, controlled atmosphere processing, and reciprocating mills for low-plasticity materials. These and other approaches focus on achieving consistent material properties while maintaining high-throughput production capabilities.
1. Reciprocating Hot Rolling Mill with Heated Rolls for Low Plasticity Material Processing
GUANGZHOU ZHONGSHAN PRECISION TECH CO LTD, 2024
Reciprocating hot coil rolling equipment for processing low plasticity and low toughness materials like steel alloys with improved quality and efficiency. The equipment uses a reciprocating hot rolling mill with two rolls enclosed in a body. The rolls have heaters on their outer walls to heat the material being rolled. This allows continuous, reciprocating hot rolling of low plasticity materials without the need for manual intervention to prevent breaking or poor rolling effects.
2. Hot Rolling Device with Under-Support and Controlled Atmosphere for Copper-Containing Metal Plates
ISHIGE KENGO, 2008
Hot rolling device to improve quality and speed of manufacturing copper-containing metal plates. The device has features to prevent vulnerable scaling and oxidation during hot rolling. While the metal is rolled in the roughing mill, it is supported from below to prevent curvature. This prevents copper deposits from forming at grain boundaries. The rolled metal is then cooled and heat treated in a controlled oxygen-poor atmosphere to prevent oxidation. By separating rolling from other processes, temperature and oxide levels are controlled for consistent quality.
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