Blister packaging process and cost estimation


Blister packaging processing flow by Hangzhou Oubeier P […]

Blister packaging processing flow by Hangzhou Oubeier Plastic Industry Co., Ltd

First. The customer issues an inquiry request:

Second. The business department quotation:

The price of blister products is related to the following factors: the length, width, height of the blister products and the complexity of the blister molding; the type, thickness, material and color of the materials used; the subsequent processing technology of the blister products (folding, Punching, edge banding, etc.), order quantity and order cycle, the quotation staff will have a preliminary quotation based on the customer's samples or drawings and description, and the final quotation will be reported after proofing. (Some experienced masters can quote accurate prices before proofing)

Third. Computer design:

After quoting the basic population, the customer will send the request, physical or blister samples to the business department, and the production scheduling will ask the computer design department to scan the customer's physical objects and combine the design of the printed matter to make a graphic design of the blister product.

Forth. Blister proofing:

After the customer approves the computer design draft, the production schedule will decide which way to develop the mold (gypsum mold, copper mold, aluminum mold) based on the complexity of the blister product. The development cycle is 3 to 5 days. (Most of the blister proofing has been proofed by gypsum mold) The steps are:

  1. Paste the actual objects into a contour by hand
  2. Put it on the blister proofing machine to form the blister shell blank;
  3. Pour the blister special plaster into the blister shell embryo and form a gypsum blank after air-drying;
  4. Use electric punch to deep-process the gypsum blank and regular shapes;
  5. Manual molding and adding parts manually.
  6. Bond each polished gypsum component into a complete gypsum mold;
  7. Put in the complete sample of plastic molding by plastic molding machine;
  8. Complete the proofing process according to the finished product size, manual trimming and edge sealing. If there is demand, the printing and proofing department will also make paper cards, stickers or color boxes used for blister samples together; they will use the full-open printing digital proofing machine to reflect the actual printing results;

Fifth, Make production molds:

After the sample is recognized by the customer, a certain number of orders are usually placed

Production scheduling will decide which type of mold is mass produced according to the output and the complexity of blister molding;

  1. Gypsum mold production is adopted. The mold making process is similar to blister proofing. The advantage is that the production cycle is short and the cost is the lowest. It takes only one to two days to make a full board (60 * 110) template. The disadvantage is that the surface of the blister product is rough, the mold is easy to crack during production, the durability is poor, and it is impossible to form a product after a large depth and high complexity sheet.
  2. Adopt electroplated copper mold; the process is to spray a layer of conductive agent on the surface of the sampled bubble shell, and then put it into the spot solution tank to plate a thick copper layer. The electroplating process takes 72 hours, and then the copper mold Pouring gypsum (increasing hardness) for polishing, pumping eyes and other treatments. The advantages of using electroplated copper molds are that the surface of plastic products is smooth, the cost is moderate, and the durability is strong. The disadvantage is that the mold making cycle is long, and it is impossible to complete the production of precision blister products.
  3. The production is made of plastic aluminum molds. The mold design needs to use computer design drawings first. When using CNC CNC punching, the advantage is that the production cycle is moderate, and the later mold processing time is short (the brick gas eye is completed at the same time by CNC CNC). High precision and strong mold durability, the disadvantage is high cost.

Because the molding range of the automatic high-speed plastic molding machine is (about 66 * 110cm), whether it is a plaster mold, a copper mold, or an aluminum mold, a single mold needs to be put together to reach the molding size, we call this process as After the puzzle is assembled, the whole mold is called the bottom mold.

  1. For products with large blister forming depth, it is necessary to make an upper mold. While the bottom mold vacuum forms the sheet, apply pressure from above the sheet to stretch the sheet evenly to each part, otherwise it will If the local thickness is too thin, the entire production cycle of the production mold should be 5 to 7 days.

Sixth, blister molding production: the use of automatic high-speed blister molding machine production, the basic principle is: the coiled sheet is pulled into the electric furnace oven and heated to a softened state, said hot and then pulled above the mold, the mold is moved up and pumped Vacuum will absorb the softened sheet to the surface of the mold, and at the same time, the cooling water will be sprayed on the surface of the formed sheet to harden it, and the formed sheet will be automatically pulled to the storage box. Pneumatic cutters separate formed and unformed sheets. Thus completing the process.

Most of the main quality problems of blister products occur during this process:

  1. Blister is not in place: refers to products that are deformed in shape and not blister-shaped into the same shape as the mold.
  2. Excessive blister means that the blister product is too thin
  3. Wire drawing: refers to the appearance of undesirable wire marks on the molded product.
  4. Uneven thickness. These problems need to be debugged in place after the mold is put in place: including the time for the sheet to advance; the temperature and time of heating, the intensity and time of vacuuming, the location of the upper mold drop, whether to add accessories between the molds, etc.

Seventh. Punch processing: The large-format plastic products must pass through the punching machine and be divided into a single product with a block board. The principle is that there is a large plastic chopping board on the punching machine, and the large-format plastic molded products are placed on the cutting board. And the previously made knife die is stuck on a single product, and the single finished product is cut out by the up and down movement of the punch.

How to calculate the price of blister product, the determinant of the price of blister product. Even a cost of blister egg tray can be calculate.

Unit price of blister = product material cost + energy consumption + labor and transportation + profit

Energy consumption: Blister is processed by heat, and the power consumption is larger than other industries, roughly 8% of the product material cost

Labor: Plastic blister is mainly produced by machines, with less labor, roughly 10% of product material cost

Transportation: According to the distance between the customer and the factory,

Profit: The net profit of the blister factory is generally very low, 12% -20%, depending on the payment period, the 30-day checkout is 14%

Material cost: The calculation of product material cost is more complicated. Before calculating, first make clear the following data:

Raw material price: According to the use of the product, determine what kind of material and grade of material is used, and find the lowest price supplier of this kind of material

Film thickness: It is presumed that the product must be made of thick film, according to the thickness and shape of each part of the molding

Number of layouts: According to the product size and shape, calculate how many molds can be arranged in one version.

Material loss rate: The main factors are the product shape, product quantity and external dimensions and the degree of adaptation of the suction machine chassis.


Material cost calculation formula:

Product material cost = 1 ton raw material price / 1 ton raw material production quantity

The number of finished products per ton of raw material = 1 ton of raw material length / length of blister template X typesetting quantity X (100% —material loss rate)

1 ton raw material length = 1 ton / material density / film thickness / width (width of plastic chassis)

Among them, material density (PVC is 1.36T / M3), blister chassis width (0.41-0.71M), template length and other four parameters are estimated by professional experience.

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