Hot Stamping for Metallic Package Accents
Hot stamping metallic accents onto packaging requires precise control of thermal and mechanical parameters. Current processes face challenges with uneven pressure distribution, substrate deformation, and inconsistent foil transfer—particularly when stamping temperatures exceed 150°C and pressure variations of even 0.1 MPa can affect finish quality.
The fundamental challenge lies in maintaining uniform heat and pressure distribution across complex substrate geometries while preventing thermal damage to the underlying materials.
This page brings together solutions from recent research—including contoured foil designs that match substrate shapes, servo-driven stamping mechanisms with integrated pressure control, and thermal management systems using heated anvil rolls. These and other approaches focus on achieving consistent metallic finishes while maintaining production speeds and material integrity.
1. Process for Hot Stamping with Substrate Surface Preparation, Contoured Foil, and Controlled Temperature and Pressure
Guangdong Gaoyi Packaging Technology Co., Ltd., 2023
Process to improve accuracy of hot stamping in packaging and printing applications. The process involves steps like: 1. Cleaning and smoothing the substrate surface where hot stamping will be done to ensure uniform pressure. 2. Using a hot stamping foil with a contour matching the substrate shape to prevent overlap or gaps. 3. Adjusting the hot stamping temperature and pressure based on the foil material and color. 4. Using a heated anvil roll to prevent cold spots and ensure even pressure. 5. Using a hot stamping machine with precise temperature and pressure control. 6. Applying a primer to the substrate to improve adhesion of the hot stamping foil. 7. Controlling the hot stamping temperature and pressure based on the foil material and color. 8. Using a heated anvil roll to prevent cold spots and ensure even pressure. 9. Clean
2. Automated Hot Stamping Machine with Servo-Driven Stamping Head and Sliding Box Loading Mechanism
LEI CHENGJIAO, 2021
Automated hot stamping machine for printing decorative patterns on packaging boxes. It has a base plate, support frame, driving mechanism, hot stamping unit, and loading/unloading platform. The driving mechanism uses a servo motor, gears, and pulleys to move the stamping head. The loading platform has a sliding mechanism to move boxes into position for stamping. The machine is designed to automatically load, stamp, and unload boxes without manual intervention.
3. Hot Stamping Device with Dual-Side Stamping Stations and Independently Adjustable Upper Dies
HONGLIN UNITED IND OF JINAN CO LTD, 2019
A hot stamping device for packaging boxes that allows efficient and simultaneous hot stamping on both sides of the boxes in a single pass. The device has multiple hot stamping stations arranged along the length of the workbench. Each station has lower and upper dies, flattening rollers, and gold paper rollers for stamping on the front and back of the box. The upper dies can be adjusted and heated separately. This allows hot stamping both sides of the box in a single process without flipping.
Get Full Report
Access our comprehensive collection of patents related to this technology
