What is the sheet?
One of the main steps to produce all kinds of cartons is the sheet making process. In fact, sheets are the most important element in the production of cardboard, and it is not possible to produce cardboard without sheets. Also, the final quality of the produced cardboard depends to a large extent on the way the sheet is made. Some people confuse the steps of making sheets with the same process of making paper and consider paper and sheets to be the same thing. But this is a completely wrong idea and these two are different from each other.
Types of cardboard paper are produced from recycled materials depending on the quality and price. However, the most important raw material used to make and produce cardboard sheets is various types of paper; But during the process of making the cardboard sheet, other materials are added to it. The most important factor influencing the price of cardboard and the price of cardboard sheets is the type of paper used for its production.
Flute and its types
Flute is the corrugated congressional paper that is placed between flat layers of cardboard. The waviness of the flutes depends on their types. The range of flute steps in sheet-making is named as A, B, C, E, F categories, each of which is used for different purposes in carton production.
B Flute
bOne of the most suitable types of flutes in cartons for breakable items with high impact strength is flute B, which has an average of 125-150 teeth with a thickness of 2-3 mils and is capable of supporting a weight of 13 kilos.
Common uses: cartons of tile and ceramic factories, restaurant floors and trays, packaging of canned goods and drinks, separating and dividing sheets, etc.
C Flute
< The works made with such a flute are much more practical and are used for packaging various products. The thickness of this flute is between 4-3.5 and their number is 120-140 per meter. The cartons produced by Flute C have a maximum load of 8 kg.
Common uses: mother cartons for all kinds of industries, some trays and insoles and...
E Flute
Cartons and boxes produced from this type of flute, which have good resistance to pressure and crushing and protect the boxes from such damages.
The thickness of this flute is something between 1-2 mm and counting Their numbers are 290-320 per meter. These cartons are used for cases where elegance is important for the manufacturer.
Types of sheets
🔱 Three-layer cardboard sheet with one flute layer (Congress)
This sheet contains a layer of corrugated paper that is placed between two other papers that make up three layers in total. This type of cardboard sheet is also called three-layer cardboard. There is a layer of liner paper, which in total reaches five. This type of cardboard sheet is called five-layer.
🔱 Seven-layer cardboard sheet with three flute layers (congress paper)
In this type of sheet, three layers of corrugated paper are placed between 4 layers of liner paper, which adds up to seven layers. This type of cardboard sheet is called Haft La.
The process of ordering and producing carton
1_Marketing and sampling stage
Communicating with the customer and requesting samples and sending samples to evaluate the material, size, printing
in the first stage of the carton making process It is necessary to pay attention to the customer's needs and the functions expected from the packaging (type of carton, type of cardboard sheet, type of printing) because this is the function of the packaging (the weight that goes inside the carton, the place where the carton is used, for example, in a cold room or in a humid place). which specifies the type and quality of the carton. After the technical specifications, quality and desired dimensions are clarified by the customer, the prototype of the carton is prepared and after the final approval by the customer, it enters the mass production process of the packaging product.
The type of sheet according to the sample taken
2_Stage of pricing and order registration
Inquiring the price to the customer and closing the sale and purchase contract Financial documents
After approval and passing the first stage, the details as a package product production plan are presented to the cardboard sheet production unit so that this unit can produce the required sheets and cardboard in such a way that in some cases Paper waste is used in carton making, and wood pulp is used in some others to prepare paper pulp. Paper pulp is used to prepare packaging paper, and then the required sizes are made on them, and then the work of gluing and gluing the paper is done, and after that, it is sent from the paper factory to the sheet and cardboard production unit. The carton will be sent.
3_production and delivery stage
order request to the production manager and coordination for the purchase of production raw materials and production schedule and delivery novel to the customer
After the cardboard sheets and cardboard are delivered from the cardboard sheet production unit, according to the type of carton ordered by the customer, the related machine is determined to carry out the carton production steps. The carton production process can be done in a continuous production line or by a separate machine.