Plastic Blister Production Process

- Jul 06, 2018-

Blister mold development and proofing: customer recognition after the computer design draft, the complexity of the production dispatch meetings according to blister products decided to adopt what kind of way to develop the mould (plaster mold, copper, aluminum die), the development cycle for 3 to 5 days.Most of the injection molding samples are made of plaster mould. The operation steps are: 1.2. Put the foam shell hair embryo into the blister moulding machine;3. Pour the prepared special plaster into the foam shell hair embryo and form the gypsum hair embryo after air drying.4. Deep processing of gypsum blank and regular shape by electric milling machine;5. Manual grinding and manual addition of components;6. Glue all the polished gypsum parts together into a complete plaster mold;7. Add the complete sample of the blister molding machine;8. According to the finished product size, manually cut the edges and seal the edges to complete all the proofing process.If there is demand, printing proofing department will blister sample at the same time the paper card, stickers or color box together, they will use full printing digital proofing function will reflect the actual printing results.

5. Production molds: after the samples are approved by the customer, a certain number of production orders are usually placed.Production dispatch meetings depending on the complexity of the production, vacuum forming decided to adopt what kind of mould production: use gypsum mold production, mould making process is similar to the blister proofing, advantage is that the production cycle is short, lowest cost, moulds made by a sheet of the (60 x110cm) only one or two days time, shortcoming in rough surface blister products, the production of mould easily broken, poor durability to forming deep, high complexity, and sheet thickness of the product.USES the electroplating of copper, the process is to play good bubble shell surface spray a layer of conductive agent, add cell inside layer of the thick copper plating, electroplating process need 72 hours, and then to the copper pouring gypsum (increase hardness), polishing and a blow hole processing, the electroplating of copper production has the advantage of suction plastic products surface is smooth, moderate cost, strong durability, defect is mold production cycle is long, can't complete the production of precision blister products.Use blister aluminum mold production, mold production need to use the computer design drawings, then adopts CNC numerical control milling machine processing, advantage is moderate, production cycle late mold processing time is short (drill air-vent work completed in CNC machining), blister products with high dimensional accuracy and mould durability is strong, the disadvantage is that the high cost.Due to the fully automatic high-speed blister forming machine of molding the range is about 66 x110cm, so whether gypsum mold, copper or aluminum mold, all need to be a single mold together, achieve molding size, we call this process puzzle, need to spell playing good porosity of aluminum or wood, spell good sheet of the mold after we call bottom die.For vacuum forming deep products, but also need to make the mould, in the bottom die sheet vacuum molding will be at the same time, the pressure from above sheet, sheet evenly stretched to every part, otherwise it will cause local thickness too thin.The entire production cycle of the molds shall be 5 to 7 days.

Six, vacuum forming production: the fully automatic high-speed blister molding machine, its basic principle is: will roll sheet into electric oven heated to softening, take hot again pull to blister mould, and the mold.if and pumping air into vacuum state, will soften the sheet to the mold surface adsorption, at the same time, the cooling water to spray fog forming sheet surface, make its hardening, forming the sheet is pulled to the storage tank automatically again, pneumatic cutting knife molding and forming sheet separation, to complete the process.Most of the major quality problems of the blister products occur in this process: 1.2. Excessive plastic absorption means that the product is too thin;3. Wire drawing refers to the improper line marks on the molding products;4. Uneven thickness.All these problems need to be in a good mold, after debugging in place, including: sheet ahead of time, heating temperature and time, the strength of the vacuum and time, the location and time of the whereabouts of upper die and depth, the location of the puzzle in the mould, whether between mold and accessories and so on.

7. Press processing: the large plate product of the blister molding must pass the press and be divided into a single product with a knife plate.Its principle is on the punch at the bottom of the table has a large piece of plastic cutting board, put the layout of molding products on the chopping block, and to make the knife mould card on a single product, through the up and down movement of the punch, cutting out a single product.

Eight, sorting and packing: this is the final blister production, also is the most important link, living quality each punch press is equipped with a packers, is also the qc inspectors, for forming and cutting good bubble shell, by visual inspection quality, the quality of the content mainly includes: 1. Whether the molding by the requirement, (2) whether there is a thread on the blister, 3. If there is a large crystal point on the blister and bubble, 4. If there is a big scratch, 5. Rushed out of the blister edge is smooth, no burr. In addition to the qualitative check member, also is equipped with inspection, every 2 hours for the whole production process to do a quality inspection, fully guarantee the quality of the blister percent of pass.