As the society's demand for plastic packaging bags continues to increase, plastic packaging bags are constantly covering shopping malls because of their bright colors, unique patterns, and convenient use, and shopping malls have also made higher requirements for plastic packaging bags. Not only is the pattern required to be old and new to attract attention, but it must also have high barrier properties to maintain the freshness of the contents. In addition, the packaging bags are required to have various postures.
Therefore, the special-shaped bag quickly attracted everyone's attention due to its distinctive shape and unique personality as soon as it came out. In the supermarket, we are dizzy with all kinds of goods, and the numerous plastic packaging bags (especially in the special-shaped packaging) also let us experience a visual enjoyment, and also let us deeply feel that plastic flexible packaging has a huge market.
Because the technology of Chinese flexible packaging companies is mixed, the production of special-shaped bags is a big difficulty for many flexible packaging companies, and even some companies have to give up when they receive such orders, but they are troubled by not having enough technical support points. Today, I will briefly introduce the production and manufacturing of special-shaped bags and the characteristics of related machinery and equipment for reference by manufacturing enterprises in need.
First, the type of special-shaped bag
1. Three-side sealing special-shaped bag
All kinds of patterns are directly punched on the three-side sealed bag, taking into account the requirements of daily chemical products, food, etc. to reflect the requirements of product visualization and distinctive personality, such as the packaging of various fruit slices (green awn slices, etc.) The shape of the bag is planned to be a relative fruit shape (green awn shape, etc.).
2. Independent special-shaped bag
According to the bottom, the special-shaped bags of various postures can stand, which fully reflects the three-dimensional sense of the special-shaped bags, which is beneficial to the placement of the shelves in supermarkets or shopping malls.
3. Self-reliance shaped bag with zipper
Gala lock is basically the unique shape of the special-shaped bag, which allows the bag to be opened repeatedly. Generally, it is suitable for some light dry items, such as sugar cubes, nuts, chocolate, biscuits, crystal jelly, tea leaves, etc.
4. Self-reliance shaped bag with mouth
The effect of adding the spout is to facilitate the contents to be poured out. After adding the spout, the product can be resealed, which means that it can be opened and used several times. These special-shaped bags are suitable for liquid drinks, shower gel, shampoo, ketchup, vegetable oil and other liquids or other liquid products that need to be opened several times.
5. Imitation mouth type self-reliance special-shaped bag
There is no additional mouth in the product packaging design, but a mouth-like posture is created by using the manufacturing characteristics of the special-shaped bag, which is convenient to use. Generally used for liquid packaging, but once opened, it cannot be resealed.
Second, the structure of the special-shaped bag
Near special-shaped bags and general flexible packaging bags, the key structures are PET/PE, PET/CPP, BOPP/PE, BOPP/VMPET/PE, PET/VMPET/PE, PET/Al/NY/PE, PET/NY/PE and other structures , its packaging and printing, composite processing technology and general packaging bags.
3. Manufacturing and mechanical equipment of special-shaped bags
The forming of special-shaped bags of some flexible packaging companies is to make bags in a bag-making machine, and then punch out the special-shaped posture with a high-speed punching machine offline for free, and then carry out the necessary refurbishment method to manufacture special-shaped bags. This method is extravagant. A lot of human resources and material resources are wasted, and the productivity is not high. Now there is a kind of auxiliary mechanical equipment of bag making machine - die-cutting machine, which is professionally used for the production of special-shaped bags. It is connected to the bag making machine and insists on free online simultaneous film cutting, which can very well ensure the precision of the bag making of special-shaped bags. Offline implementation does not require production and processing after development, and it is equipped with free online transportation and trimming of finished products. The automatic unwinding effect greatly improves the bag making power of the special-shaped bag and reduces the production cost.
The special-shaped bag enhances the bundling of the traditional square bag, and changes the parallel line edge of the packaging bag into a curve edge, thereby reflecting a different interior planning style, with unique, simple, established, easy to distinguish, and prominent corporate image characteristics. , also means the fashionable trend of plastic flexible packaging. At this stage, some large flexible packaging manufacturers in China have been equipped with relative machinery and equipment for the production of professional special-shaped bags. It is believed that with the development trend of bag making technology and mechanical equipment, along with the continuous popularization of die-cutting machinery and equipment, the manufacture of special-shaped bags will no longer be difficult for flexible packaging companies, and special-shaped bags will show a booming phenomenon of prosperity.