For most manufacturers of glass wine bottles, after the products leave the factory, they will receive various product quality problems from customers every year, causing customers to complain and causing losses to both parties. Reasons for imputation: mainly due to improper quality control during the production process. Here are some brief discussions on the key points of quality control during the production process.
1. Mold inspection
(1) For manufacturers specializing in the production of glass wine bottles, most of them produce according to the molds provided by customers, or according to drawings and newly opened molds for sample bottles. For the key dimensions of molds that will affect the molding, they must communicate with customers when opening the mold. Negotiate and reach a consensus on the revision of key dimensions.
(2) When all molds enter the factory, they must match the die, initial mold and finished mold of the mold, and inspect them according to the drawings or customer requirements.
2. First Article Inspection
(1) The first 10-30 products are produced before the mold is put on the machine and before the annealing line, and 2-3 products are selected from each mold for size specification inspection. The inspection focuses on the mouth height and the inner and outer diameters of the mouth; Whether the lettering on the bottom is correct and clear; whether the pattern on the bottle body is correct.
(2) When the bottles just come out of the annealing line, the quality inspection team leader will limit each molded product to 2-3, and conduct inspections in all aspects according to the drawings. The key point is that in addition to the above, capacity measurement is also required. Measure the weight of the material, the inner and outer diameters of the mouth, if necessary, fill the bottle with water, and use the cap provided by the customer as a physical assembly to check whether the cap can be in place and whether there is water leakage. And make internal pressure, internal stress, acid and alkali resistance test.
3. Process inspection
(1) In the case of not changing the mold, every 2 hours, take 2 pieces of each mold for capacity and material weight testing, and also need to check the inner and outer diameters of the mouth, because the mouth mold is easy to be stained with oil during use, resulting in a loose lid. Alcohol leakage occurs.
(2) During the manufacturing process, a new mold may be replaced due to the mold. Therefore, after the mold is changed, the molding workshop must immediately notify the quality inspection workshop, and the quality inspection workshop must make the first piece of the bottle made with the new mold. Inspection and process inspection to prevent quality problems caused by missing inspections due to quality inspections after mold changes.