Kunshan Weite Packing Products Co., Ltd.
Add: No. 1353, Changjiang North Road, Kunshan City, Jiangsu Province
Contact: Di Zong
Mail box: [email protected]
First, the customer sends an inquiry request:
Way one call to make an inquiry, the second way to fax inquiry, through three email inquiry, the fourth way through the network chat tool inquiry. The customer must provide the length, width and height of the blister and the thickness (or grammage), color and type (PVC, PET, PS, PP) of the material used, the number of products and the production cycle.
Second, the business department quotes:
The unit price of plastic products is related to the following factors: the length, width, height and plastic molding complexity of the plastic products; the type, thickness and color of the materials used; the downstream processing technology of the plastic products (folding, hitting Holes, edge seals, etc.), order quantity and order cycle. The quotationer will have an initial quotation based on the customer's sample and description, and the final quotation will be reported after proofing.
Third, computer design:
After the customer basically approves the quotation, the request, physical or blister samples will be handed over to the business department. The production scheduling meeting will require the computer design department to scan the customer's physical object and combine the print design to produce a flat design drawing of the blister product.
Fourth, blister proofing:
After the customer approves the computer design draft, the production scheduling will decide which method to use to develop the mold (gypsum mold, copper mold, aluminum mold) according to the complexity of the plastic product, and the development cycle is 3-5 days. The blister proofing is mostly done by plaster mold. The operation steps are as follows: 1. Firstly, the physical object is formed into a contour by hand paste; 2. The blister blank is formed on the blister plate-making machine; 3. The blister is used. The special gypsum is poured into the bulb embryo, and the gypsum blank is formed after air drying; 4. The electro-milling machine is used to deep-process the gypsum blank and the regular shape; 5. Manually grinding and manually adding parts; 6. Each polished gypsum part Bonded into a complete plaster mold; 7. Put in a plastic plate-making machine to form a complete sample; 8. According to the finished product size, hand-cut and edge-sealing, complete the proofing process. If there is a demand, the printing and proofing department will also make the paper cards, stickers or color boxes used for the blister samples, and they will reflect the actual printing results with the full-open printing digital proofing machine.
Fifth, production and production molds:
After the sample is approved by the customer, a certain number of production orders are usually placed. According to the complexity of production and plastic molding, the production scheduling will determine which kind of mold is used for mass production: using gypsum mold production, the mold making process is similar to blister proofing. The advantage is that the production cycle is short and the cost is the lowest, making a full version (60X110cm). The mold only takes one to two days. The disadvantage is that the surface of the finished plastic product is rough, the mold is easily broken during production, and the durability is poor, and it is impossible to form a product with large depth, high complexity and thick sheet. The electroplated copper mold is sprayed with a layer of conductive agent on the surface of the sampled bulb, and then placed in the electrolytic bath with a thick copper layer. The electroplating process takes 72 hours, and then the copper mold is poured. Gypsum (increased hardness), polishing, and air-eye treatment, the advantage of using electroplated copper mold production is that the surface of the plastic product is smooth, the cost is moderate, and the durability is moderate. The disadvantage is that the mold production cycle is long and the production of precision plastic products cannot be completed. It adopts plastic aluminum mold production. The mold production needs to adopt computer design drawings first, and then CNC CNC milling machine processing. The advantage is that the production cycle is moderate, and the later mold processing time is short (drilling gas eye work is completed in CNC machining), plastic product size The precision is high, the mold is durable, and the disadvantage is high cost. Since the molding range of the automatic high-speed plastic forming machine is about 66X110cm, whether it is a plaster mold, a copper mold or an aluminum mold, it is necessary to put together individual molds to achieve the molding size. We all call this process an imposition. Put it on the aluminum plate or wooden board with the stomata, and we will call it the bottom mold. For products with a large depth of blister forming, it is also necessary to make an upper mold. When the bottom mold is vacuum-molded, pressure is applied from above the sheet to uniformly stretch the sheet to each part, otherwise it may cause local The thickness is too thin. The entire production cycle of the production mold should be 5 to 7 days.
6. Plastic molding production:
It is produced by automatic high-speed plastic forming machine. The basic principle is: pull the rolled sheet into the oven to heat it to soften state, then pull it to the top of the plastic mold by heat, move the mold up and vacuum, it will soften. The sheet is adsorbed to the surface of the mold, and the cooling water is sprayed on the surface of the formed sheet to be hardened, and the formed sheet is automatically pulled to the storage box, and the pneumatic cutting knife separates the formed from the unformed sheet. Thereby completing the entire process. Most of the main quality problems of plastic products occur in this process: 1. The plastic is not in place, which means that the shape is deformed, and there is no product that is shaped into the same shape as the mold; 2. Excessive plasticity means that the product is too thin; Pulling wire refers to the appearance of undue line 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 advancement time of the sheet, the temperature and time of heating, the strength and time of vacuuming, the position of the upper mold falling, the time and depth, and the placement of the mold in the imposition. Whether to add accessories, etc. between the position and the mold.
Seven, punch processing:
Blister-formed large-format products must be punched and split into a single product with a single knife. The principle is that there is a large plastic cutting board on the bottom of the punching machine. Kunshan blister puts the large-format forming product on the cutting board, and clamps the previously prepared knife mold on a single product, and cuts it through the up and down movement of the punching machine. A single finished product, but the shortcoming of this cutting method is that the cutting board and the die are relatively easy to damage, resulting in a non-smooth trim and a burr. For a high quality blister, a cold die (a male die, a Master mold) and cold punch processing.