Quotation logic for hardcover boxes

Obtaining a quotation for a hardcover book is significantly more challenging compared to that for a color box. The primary reason lies in the imposition process. Unlike color boxes, which typically have a single structure (expanding into a single unit upon unfolding), hardcover boxes consist of multiple parts made of different materials. This makes the imposition calculation extremely difficult.
For the insert box, the top and bottom covers
Therefore, for the hardcover gold quotation, we need to first decompose the structure, then assemble components with the same materials and surface treatment processes onto one plate (if the expanded size is too large to fit onto one plate, they should be separated into multiple plates), and then proceed with subsequent printing and post-printing pricing. In addition, the hardcover box also requires the addition of manual molding costs, with the specific method as follows.
Step 1: Component decomposition (material composition of hardcover box)
Composition of hardcover box materials
Step 2: Process decomposition
Decomposition of printing and surface treatment processes
Step 3: Size conversion
Based on the aforementioned decomposition calculation, we found that the most crucial core is to perform size conversion, that is, to calculate the expanded size. Only with the expanded size can we determine the imposition size and calculate the paper usage, thereby obtaining the printing process, surface treatment, die-cutting, and other related processes
Processing fee.
make up
Step 4: Calculate the Unfolded Dimensions. Different box types require different cutting die diagrams and calculation methods for unfolded dimensions. Here, we only take the top-and-bottom lid as an example. For the unfolded diagrams of other types of boxes, please refer to Packaging Wizard CAD. It is important to note that the unfolded dimensions of gray board, top sheet, and bottom sheet are different. Before providing a quotation, it is necessary to have a clear understanding of the cutting die structure for different box types.
Heaven and Earth Cover
The above image is an unfolded and molded diagram of a hardcover box with a border. We will only introduce the lower part,
Heaven and Earth Cover
The expanded length of the gray board of the box lid = length + 2 * height of the box lid. The expanded width of the gray board of the box lid = width + 2 * height of the box lid
The expanded length of the gray board at the bottom of the box = length + 2 * height of the box bottom
The expanded width of the gray board at the bottom of the box = width + 2 * height of the box bottom
The unfolded length of the box lid tissue = Length + 2 * (Box lid height + 20)
The expanded width of the top paper of the box lid = width + 2 * (height of box lid + 20); the expanded length of the bottom paper of the box bottom = length + 2 * (height of box bottom + 20)
The expanded width of the bottom paper of the box = width + 2 * (box bottom height + 20)
Note: The 20 here refers to including 20, but it can also be equal to 15
Step 5: Once the breakdown of the refined gold is clearly calculated, the price calculation becomes relatively easier. Refer to the method for calculating the color gold to determine all the components and obtain the total price. Generally, it includes: printing cost, film (surface treatment), bronzing (local surface), die-cutting cost, die-cutting mold cost, manual molding, as well as assembly, accessories, carton, and shipping.
One more point needs to be clarified here. When it comes to imposition, if the paper material and craftsmanship of the gold cover and the face paper or lining paper of the box bottom are the same, we can determine whether they can be imaged on the same plate based on the actual situation. This will most likely reduce costs (because it reduces the number of plates needed)
Printing startup cost, plate fee, and corresponding losses.
Corner pasting, box pasting, and assembly are the black boxes in the pricing of hardcover boxes, as there are significant differences among different factories. Most of these processes are done manually, but there are also sizes and box types that can be completed mechanically. The data provided below corresponds to the calculation formulas
Corner stitching = unit price * order quantity * 2 (for both the lid and the bottom of the box), with a reference unit price of 0.05 yuan
Paper box = unit price * area * number of stars, unit price reference: 0.3 yuan/p (starting from 500 pieces)
Rice paper box = unit price * area * number of stars, unit price reference: 0.2 yuan/p, starting from 500 pieces
Molding cost = unit price * quantity. Unit price reference: between 0.15 yuan and 0.3 yuan. Here, the unit price for particularly large boxes and particularly small boxes will be relatively higher, but if there is equipment to complete the task, the unit price will be significantly reduced,
3. System information quotation:
After understanding Lao Zhang's approach, we began to develop a packaging box quotation program. We can consider the entire quotation algorithm as being based on imposition. Once we have the imposition results, we have the number of printed sheets. With the number of printed sheets, we can calculate the material cost, printing cost, surface treatment cost, and other process costs. The biggest difficulty of imposition is that the imposition results are not unique. Because Lao Zhang has two printing machines, one is a two-up and the other is a four-up, and the machine sizes are different. Furthermore, the dimensions and specifications of various materials also vary greatly, so there are many different imposition and machine loading results. We need to analyze the data and then choose the optimal solution (the cheapest plan). Below is a breakdown of the system: 1) Backend:
The process includes setting up the printing machine (method of calculating the price), surface treatment, bronzing, UV, die-cutting, box gluing, mounting, embossing, manual molding, and so on.
Price calculation for printing machine
production processes
For flexibility, we have set up the printing process and all other procedures to allow for self-addition, deletion, and modification. This means that users can add new procedures and printing machines through the backend.
The materials include price per ton/price per square meter, grammage (for weight and freight calculation), paper thickness (for die-cutting), and specifications (related to imposition results). Packaging materials
2) Front desk:
According to Lao Zhang's requirements, he hopes that other colleagues can easily learn it, so the operation of the natural front desk needs to be very simple. For this reason, I provided Lao Zhang with a quotation template pit, and each pit has been pre-set with materials, printing, and other processes. Users can directly get the price by only modifying the size and quantity,
However, due to the uncertainty of many prices, such as temporary fluctuations in materials, outsourcing of die-cutting, or other unpredictable factors, I have added a small tick mark for temporary price adjustments at the front desk.
Printing process
After the final pricing is completed, the detailed pricing results and the layout plan should be displayed for Lao Zhang to verify.
Quotation details for Tiandihe
"Tiandihe imposition result"
In terms of layout calculation, further optimize the insertion and assembly of card boxes.