In the field of pharmaceutical production, the printing of empty capsules is an important process step. It not only beautifies the appearance of the products and enhances the brand image, but also plays a crucial role in product identification and anti-counterfeiting. With the continuous development of pharmaceutical technology, the printing technology of empty capsules has become increasingly mature and perfected. This article will introduce the methods in detail, equipment principles and process characteristics of empty capsule printing, helping readers gain a comprehensive understanding of this key step in the pharmaceutical process.
The Basic Principle of Printing on Empty Capsules
The printing on empty capsules mainly adopts transfer printing technology. Through a specialized printing equipment, pre-made text or patterns are transferred onto the surface of the capsules. This process usually requires precise control of the capsule positioning, ink transfer, and drying. According to patent technical materials, a typical capsule printing machine includes core components such as the frame, conveyor chain plate, head, worktable, transfer rubber wheel, steel mold wheel, and motor. Among them, the surface of the steel mold wheel is engraved with embossed text or patterns. When it comes into contact with the transfer rubber wheel, the ink will be transferred onto the rubber wheel surface to form raised text patterns, and then the printing process is completed through the contact between the capsule and the rubber wheel.
Common Empty Capsule Printing Equipment
The common empty capsule printing equipment available on the market currently mainly include two types: fully automatic capsule printing machines and semi-automatic printing machines. The fully automatic equipment features a compact structure, simple operation, and convenient mobility, and can be applied to the printing of various forms of capsules such as empty capsules, capsules with filled medicine, and soft capsules. These devices usually adopt a stainless steel sealed design, conforming to GMP standards, and have high printing efficiency.
The semi-automatic equipment is relatively simple and has a lower cost, making it suitable for small and medium-sized pharmaceutical factories. Although these devices have a lower degree of automation compared to the fully automatic ones, they are flexible to operate and easy to maintain, and still have application value in some specific scenarios.
