As a common equipment in packaging machinery, a biscuit sandwich machine is a machine that needs to seal the packaging container to keep the product sealed, maintain product quality and avoid product loss after placing the product into the packaging container. The sealed form refers to a machine that seals the container after the container has been packaged to contain the product. Packaging containers are made of many materials, such as paper, plastic, glass, ceramic, metal, composite materials, etc., and packaging containers vary in shape and physical properties. Therefore, the sealing forms and sealing devices used are also different.
Generally speaking, according to the mechanical properties of packaging materials, it can be divided into the following two categories: flexible container sealing devices. Flexible containers are bag-like containers made of flexible materials, such as paper, plastic films, and composite films. The sealing of this type of container is mostly combined with bag making and filling and is rarely used alone. Due to the different materials, the sealing device is also different. Rigid container biscuit sandwich machine. A rigid container refers to a container whose shape is not easily changed after the container is formed, and its sealing mostly adopts different forms of lids. The following types are commonly used.
Generally, biscuit filling machines have two forms of performance in sealing and packaging. First, screw on the cap. This cover has pre-processed internal threads, and these threads can be single-ended or multi-threaded. For example, single-thread threads are used for medicine bottles, and multi-thread threads are used for canning bottles. The machine relies on a rotating lid to compress it to the mouth of the container. Second, knurling. Such closures are mostly made of aluminium that has not been threaded beforehand. The aluminum cap is rolled to make it look exactly like the screw on the bottle mouth and seals the container. This type of cover destroys the dent around the skirt when unsealed and cannot be recovered, so it is also called "anti-theft cover". This machine is mainly used for sealing and packaging high-end alcohol and beverages.
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