Blister Pack Sealing Presser with Laser-Engraved Ridges

The patent replaces conventional mechanical machining methods (photoengraving, stock-removal milling) with laser surface structuring technology. The laser beam directly melts and removes material to create the knurling grid pattern, eliminating the need for mechanical tooling and multi-step processes. This substitution dramatically reduces production time from days to hours while maintaining or improving grid precision through digital control of the laser parameters.

The invention changes the fundamental processing parameters by using laser energy density, pulse duration, and scanning speed instead of mechanical cutting speeds and tool paths. By adjusting laser power, pulse frequency, and dwell time, the knurling grid can be created with precise control over convexity depth and spacing, achieving the required adhesion properties without the time-consuming mechanical machining processes.

The patent replaces imprecise chemical photoengraving processes with precise laser-based material removal. The laser system allows digital programming of the exact grid pattern, convexity spacing, and depth profile. By controlling laser power, pulse duration, and scanning velocity, the process achieves repeatable precision in convexity dimensions that cannot be obtained through chemical etching or manual machining methods.

The invention uses digital models and CAD data to precisely define the knurling grid pattern before processing. The laser system copies the digital design directly onto the heat-sealing plate surface with high fidelity, ensuring that the convexity dimensions, spacing, and overall grid geometry match the specifications exactly, eliminating the variability inherent in conventional photoengraving methods.

The patent replaces mechanical and chemical machining methods with laser surface structuring, which can process a wide variety of materials including metals, ceramics, and polymers. The laser parameters (power, wavelength, pulse duration) can be adjusted to match the specific material properties, enabling the creation of knurling grids on plates with ideal thermal conductivity materials that were previously inaccessible to conventional machining methods.

The invention changes the manufacturing approach by using laser energy parameters that can be optimized for different material types. By adjusting laser wavelength, power density, pulse duration, and scanning speed, the process can effectively structuring surfaces of materials with varying thermal conductivities, including highly conductive metals that require rapid heat dissipation during heat-sealing operations.

The patent merges the heat-sealing process with the information imprinting process by integrating laser surface structuring capabilities. The same laser system that creates the knurling grid for adhesion enhancement also directly imprints product information, barcodes, and instructions onto the closure film during heat-sealing. This eliminates the need for separate printing operations using toxic inks and solvents, removing the associated environmental hazards while delivering all necessary product information.

The invention replaces conventional chemical printing processes with laser-based direct imprinting. Instead of using pollutant-containing inks and solvents, the laser directly modifies the closure film surface or deposits safe materials to create permanent markings. This substitution eliminates hazardous fumes and environmental pollution while maintaining the ability to convey comprehensive product information.

The patent combines the heat-sealing operation with information imprinting in a single integrated process. The laser system performs both the adhesion-enhancing knurling grid creation and the product information imprinting simultaneously during the heat-sealing cycle. This merging eliminates the need for separate, energy-intensive printing operations while delivering complete product information on the closure film.

The invention performs all information imprinting during the initial heat-sealing process before the blister pack leaves the manufacturing line. By completing the information delivery task during the mandatory heat-sealing operation, the process eliminates subsequent printing steps that would consume additional energy and time, reducing overall manufacturing costs and energy consumption.