The sealing machine is a machine that seals the container filled with packaging. After the product is loaded into the packaging container, in order to seal the product, maintain product quality, and avoid product loss, the packaging container needs to be sealed. This operation is Finished on the sealing machine.
The sealing machine refers to the machine that seals the container after the packaging container is filled with the product. There are many materials used to make packaging containers, such as paper, plastic, glass, ceramics, metals, composite materials, etc. The shape and physical properties of packaging containers are also different.
Generally, according to the mechanical properties of packaging materials, it can be divided into the following two categories:
Flexible container closure
Flexible containers are bag-like containers made of flexible materials, such as paper, plastic film, and composite film. The sealing of this type of container is mostly combined with bag making and filling, and it is rarely used independently. Due to different materials, the sealing device is also different.
①Paper bag sealing device: For paper materials, adhesive is generally applied to the sealing part, and then mechanical pressure is applied to the sealing.
② Sealing device for plastic film bags and composite film bags: Plastic bags or composite bags made of good thermoplastics are generally directly heated at the seal and applied mechanical pressure to fuse the seal.
③Cup type container sealing device. For example: common soy milk cups, milk tea cups, etc.. The rim of the cup and the film are bonded by heating to seal the container.
Automatic filling and sealing machine
It is mainly used for the filling of plastic cups, plastic boxes and plastic bottles, and the production of composite film sealing products of corresponding materials. Filling and sealing of jelly, fruit juice, milk, yogurt, beverage, fast food and other materials. It can be adapted to the filling of liquids and slurries of different viscosities, and can be adapted to packaging containers of different shapes and capacities.
①Capping and sealing machine: The finished cap of this type of sealing machine is processed with internal threads in advance. The threads are divided into single-end and multi-end. Single-thread threads are mostly used for medicine bottles, and multiple threads are used for canned bottles. This machine relies on rotating the cap to compress it to the container mouth.
②Knurling sealing machine: The finished caps of this type of sealing machine are mostly made of aluminum without thread beforehand. The aluminum cap is rolled with a roller to make the cap appear with the same thread shape as the bottle mouth thread and seal the container. When the cover is unsealed, the indentation along the periphery of the skirt is broken, and cannot be restored, so it is also called "theft-proof cover". This machine is mostly used for sealing and packaging high-end alcohol and beverages.
③Flanging sealing machine: It first puts the cylindrical metal cap on the bottle mouth, rolls the bottom edge with a roller to make it inverted and deformed, and fastens the flange of the bottle mouth to seal it. This machine is mostly used for sealing and packaging wide-mouth cans and bottles.
According to the application of materials, it can be divided into the following common categories
Paper tube crimping and sealing machine, plastic bag sealing machine, milk tea sealing machine, vacuum sealing machine, plastic cup sealing machine, jelly filling and sealing machine, juice beverage filling and sealing machine, instant noodle sealing machine, eight-treasure porridge filling and sealing machine, coffee filling Filling and sealing machine, ice cream filling and sealing machine, duck blood filling and sealing machine, nitrogen sealing machine, side dish vacuum sealing machine, chili sauce sealing machine, ketchup sealing machine, fast food box sealing machine, jar sealing machine , Mineral water beverage filling and capping machine, yogurt bottle filling machine and so on.
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