First, the carton in the carton pack is the most commonly used folding cartons and fixed cartons two. Folding carton box types can generally be divided into three categories: barrel type, shallow type and special type. According to the structure of the system to make a sub-port or lock type, paste type, assembled folding box and so on. Fixed trays are: Sleeve trays, Insert trays, Padded trays, Shaped trays, Drawer trays, Shoulder trays, Trays with hinged lids, Tilted trays, Full Days of land type carton, box in the box, special product carton, there is a lattice plate box, there is a partition box and so on. This section of the diagram illustrates the most commonly used folding carton.
1. Tubular structure box: refers to the folding cartons with high form, side bonding, and open ends.
1 Cylindrical structure box for wine bottles, with adhesive on the sides, adhesive on the bottom, and plug-in on the top.
2 Rectangular food box, with an insert cap at the top and a bottom seal at the bottom, with adhesive at the sides.
3 completely enclosed box, all around the use of bonding methods, the lid and bottom are also completely sealed.
4Composite box, the bottom, top and side parts are all sealed together.
2. Disc structure box: refers to the structural box with a lower profile like a disc. After the top seal is completed, it is a plug-in disk type box with a cross 1 box cover connected. The box corner is locked.
2 Hexagonal adhesive folding disc cartridge.
3 Four corners paste box, the box has an oval window with display function, covered with a dotted line, the package is fully sealed. When used, open it along the dotted line.
4 Assemble the box, which is a two-to-three-layered sidewall structure with a rectangular dotted line on the cover for easy removal of the food.
3. Special structure: It refers to the shape of cartridges and trays. It includes deformation boxes and composite boxes, accumulation boxes, open-top boxes, and vibration outlet boxes.
Second, carton Carton mainly belongs to storage and transportation packaging, its application is very wide, including almost all the consumer crystal. Such as fruits and vegetables, food and beverages, glass ceramics, household appliances and bicycles, furniture and so on. With the development of social consumption, more and more goods use it as a sales package, which makes the use of cartons wider.
Corrugated paperboard is generally used as packaging material in cartons, of which the most widely used are single-tile, double-clay, and three-tile.
The requirements for the standardization of carton design are strict, because it directly affects the neat stacking on the goods yard, the effective use of the shelf volume, and the rational transport of containers. At the same time, we must fully consider the protection functions in the transportation process, such as the cracking of the seal, the waist of the drum, and the damage of the joint, all of which are related to the design of the carton structure.
1. Carton structural elements Carton structure can be divided into box shape 1 box shape: divided into internal structure, combined parts and sealing several parts.
The size of the cabinet should take into account the convenience of transport and stacking and the appropriate height of the stacking height. Different sizes and forms have different strengths and costs. The size of the box is proportional to the amount of material used, and the corresponding cost is also proportional to the cost.
The form of the box can usually be divided into a single piece, two pieces and three pieces according to the composition, and can be selected according to the different characteristics of the goods.
The box size mainly refers to the ratio of length, width and height. The proportional relationship among the three directly affects the compressive strength of the carton. Similarly, if the length and width of the carton remain the same, the higher the height, the lower the compressive strength; and the constant height, the same circumference, the greater the ratio of length and width, the lower the compressive strength.
2 internal structure.
In order to form a good overall protection function, cartons need to add various accessories in the box, such as liners, partitions, collars, moisture-proof paper, etc. The use of different accessories can change the carton compressive strength, moisture resistance, shock resistance and other protection features. Especially for products with fragile products and relatively complex structural shapes, it is very important to design the internal structure. Positioning, isolation, overhead, and reasonable methods can be adopted to protect the product from damage during transportation and sales.
3 binding sites and seals.
The joints and seals of cartons are areas that are easily broken after storage and transportation. In addition to using certain processes and materials, structural design should also be emphasized. Different structural shapes, different bonding sites, and different sealing methods Can increase the strength of the binding site.
2. Several common types of construction in carton:
1 Slotted cartons, also known as counterpart lids, are the most common form structures commonly used in cartons. It is used in hundreds of products and foods are especially useful. Of course, if special structural protection is required during use, it can also be changed based on the design.
2 Half-slotted cartons are typically used for the combination of transport containers and shelving packaging, as well as fruits, vegetables, etc. The structural shapes are of the natural type and the shallow box structure shown in the figure.
3 Wrapped carton blanks, canned products, products are very close to prevent product damage, and the minimum amount of paperboard.
In addition, there are large cartons, corrugated cardboard folding boxes, drawer cartons, display cartons, etc. These are already in contact with the carton structure or similar to other cartons, so they are no longer exemplified.
Third, paper bag Paper bag is one of the commonly used packaging containers in life, such as the use of packaging bags, industrial supplies in the multi-layer bags. On the basis of tradition, current paper bags have improved greatly in terms of performance and use. Combining paper with aluminum foil, plastics, or other materials will greatly increase the use of paper bags and broaden the scope of use.
A paper bag is formed by closing one or both ends of a paper tube, and is provided with an opening, which is a kind of soft container for holding the product.
There are many different types of paper bags. To sum up, the common types of bags are:
1. Suture the open pockets, suture the bottom of the bags, open the pockets, fill the items, and then stitch them, or glue, ligation or U-nailing. This bag type can pack granular products.
2. Suture valve bag, the bottom of the bag and the top of the bag are pre-stitched, the valve is set at the top corner of the bag, and the filling and pouring are all through the valve, usually packing small particles of product.
3. Bonding open pockets, the bottom of the bag is folded and glued in the same way as the open pockets.
4. The adhesive valve bag air bag bottom and the bag top are closed by adhesive, filled by valves, and formed into a “cuboid†structure after filling.
5. Flat-bottomed open-end bags, each layer of material at the bottom end is glued and filled in layers, and the top of the bag is folded and sealed with adhesive.
6. Bags are used more and more in real life. In particular, market competition is becoming increasingly fierce, and handbags are used as advertisements.
In the paper packaging structure, we usually use these three major categories. Like paper cans, cups and other types, with the emergence of new materials, new processes, gradually replaced by some composite materials, the structure of the basic stereotypes, as a general-purpose packaging. The above-mentioned content and structure analysis section only selects several representative shapes, and more modeling structures need to be constantly innovatively developed.
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