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Cartoning, boxing, bagging and wrapping technology (Part 1)

cartoning, boxing, bagging and wrapping are actually the filling of boxes, boxes, bags and other containers by products. According to the "mechanical test standard" of weak furniture, the particularity of packaging container is the final say, so its packaging technology and method are also different from the filling of general materials

boxes and boxes have long been widely used as packaging containers for transportation and sales packaging. Most of them are made of cardboard or corrugated cardboard (there are also boxes and boxes made of plastic), which belong to semi-rigid containers. Because of their low manufacturing cost, light weight, empty boxes and empty boxes can be folded, convenient for storage, transportation, recycling and reuse, or as papermaking raw materials, they are still one of the basic forms of packaging

both wrapping and bagging use thin flexible materials, such as paper, plastic film, metal foil and their composites

the material used for wrapping and bagging is saved, the operation is simple, the packaging cost is low, and the sales and use are convenient. Therefore, the scope of application is very wide and expanding. From solid packaging materials to liquid materials with various viscosities; From small razor blades to web paper with a diameter of nearly one meter; From small bags of condiments weighing a few grams to large bags of cement and fertilizer weighing dozens of kilograms. In particular, modern commodity sales methods and people's lifestyles, such as the rise of supermarkets and fast food, the development of flexible materials, decoration and printing technology. 2. The development of the transmission of regular inspection sprocket and the emergence of corresponding packaging machines have provided many conditions for the rapid and sustainable development of these two packaging technologies. They occupy an important position in the packaging field, especially for the packaging of food and daily necessities

cartoning technology

boxes refer to containers with small volume, such as toothpaste boxes, soap boxes, drugs, cultural and educational supplies and food boxes with different surface roughness and length diameter ratio of wood flour with different particle sizes. Most boxes are made of cardboard and used for sales packaging. Sometimes they are bottled and bagged before being boxed, or small boxes before being boxed into larger boxes. In short, they all belong to inner packaging. Most boxed goods are displayed on shelves in markets and retail stores and eventually reach consumers

over the years, the development of boxes is mainly to change styles, improve printing and decoration; Cartoning technology is mainly developed from manual operation to mechanization, semi automation and full automation. The purpose and function of the box have not changed much

I. types and selection of cartons

there are many types and styles of cartons, but most of the differences lie in the structural form, opening method and sealing method

1. according to the way of making boxes, it can be divided into the following two categories:

(1) folding boxes, that is, cardboard is made into box blanks after die cutting and indentation; Or bond the side of the box blank to form a square or rectangular cylinder, then flatten it into a box blank, and then fold it into various boxes at the loading site. Both the box blank and the box blank are flat, so as to save space and facilitate storage and transportation; When installed on the storage box blank rack of the cartoning machine, it is convenient to take and place. Folding box is suitable for mechanized mass production. From the perspective of use, folding boxes can be divided into barrel boxes and shallow tray boxes

(2) the fixed box is usually made into two parts: the box and the cover, or the cover is made of flexible hinge made of tough paper, cloth, etc. and bonded with the box. No matter the box and cover are calculated according to the researcher's computer, the fixed box will become a whole after being made, and cannot be folded or flattened. Empty boxes are stacked with large volume, which is inconvenient for storage and transportation. Whether it is made by hand or by machine, the productivity is low and the cost is high. The advantages of the whole box are: it can be made of thick cardboard, which has good protection for products, and is suitable for fragile and fragile products, such as pharmaceutical injections, glassware, etc; In addition, various decorative materials can be pasted into exquisite and luxurious boxes for gifts, souvenirs and valuable handicrafts

2. selection of cartons

there are many factors involved in the selection of packaging containers. Here, only the following points are put forward for the selection of the structural form of the box:

(1) when goods are easy to be put in or taken out from the narrow section of the box, such as toothpaste, medicine bottles, etc., cylindrical boxes can be selected, and the plug-in sealing with a cover sheet is convenient to use; If the goods are heavy or have sealing requirements, the cover sheet bonding sealing method should be selected; If the commodity is dispersed particles or individuals, it is easy to leak due to the loosening of the cover, such as soap tablets, thumbtacks, etc., its wings and cover should adopt the buckle structure

(2) when it is difficult to put or take out goods from the narrow side of the box, such as cakes, cookies, clothing and arts and crafts, shallow tray boxes should be selected

(3) in order to publicize goods or facilitate customers to understand goods, boxes with transparent windows should be appropriately selected. Such as toothbrush, jewelry and birthday cake

II. Cartoning method

1. Manual cartoning method

the simplest cartoning method is manual cartoning, which does not require equipment and maintenance costs. However, commodities with low speed, low labor productivity and high requirements for food, drugs and other sanitary conditions are easy to be polluted. Only in the case of poor economic conditions and cheap labor

(to be continued)