There are usually hard capsules and soft capsules. Hard capsules, also known as hollow capsules, are composed of two parts of the cap body; soft capsules are processed into products from film-forming materials and contents at the same time.
Hard capsules are divided according to raw materials, capsules generally include:
Gelatin capsule:
Gelatin capsules are the most popular two-section capsules in the world.
The capsule consists of two precision machined capsule shells. There are various sizes of capsules, including 000#, 00#, 0#--5#= capsules. Capsules can also be coloured and printed for a unique custom look.
The capsule body section has a tapered edge for smooth encapsulation on high-speed filling machines. The double locking ring system allows the capsules to be pre-locked prior to filling and fully nested together after filling. The design of the capsule also includes ventilation holes to avoid rebound caused by unwanted air pressure inside the capsule during high-speed filling.
Vegetable capsules:
Vegetable capsules are hollow capsules made from plant cellulose or water-soluble polysaccharides, such as Qianliqiang, etc., to meet the needs of all-natural positioning and capsule formulation solutions. It retains all the advantages of standard hollow capsules: convenient to take, effective masking of taste and odor, transparent and visible contents, etc., and at the same time, it has the connotation that traditional gelatin capsules do not have.