Determination of the tightness of plastic bottles: By vacuuming the vacuum chamber, the sample immersed in water is subjected to internal and external pressure difference, and the gas escape in the sample is observed to determine the sealing performance of the sample; the vacuum chamber is evacuated to generate internal and external pressure of the sample. Poor, observe the sample expansion and release the vacuum shape of the sample to determine the sealing performance of the sample. Note: Seal tester Product model: MFY-2 (normal type) Product use: MFY-2 seal tester is suitable for sealing test of packaging bags, bottles, tubes, cans, boxes, etc. in food, pharmaceutical, medical equipment, daily chemical, automotive, electronic components, stationery and other industries. It is also possible to test the sealing performance of the test piece after the drop and pressure test. Features: 1. It adopts manual control to maintain pressure, which is more convenient to operate and more stable in performance. 2. All pneumatic originals are made of well-known manufacturers, and the performance is stable and reliable. The pressure holding instability caused by pneumatic originals is eliminated. 3. High-quality plexiglass (acrylic) sealed barrel, the wall thickness is increased to 15mm, which effectively enhances the compressive strength of the sealed barrel and prolongs the service life. 4. Electronic pressure holding device reduces mechanical wear and makes the holding time last longer. 5. PVC operation panel, pressure digital display, resolution to 0.1kPa, convenient for users to accurately view the pressure value. 6. Built-in time display, holding pressure start timer synchronous timing, convenient for users to record and observe the holding time, the pressure keeping end timer is automatically cleared. Test principle: The vacuum chamber is evacuated by the sample immersed in water to generate external pressure, observations in the case where the sample gas to escape, in order to determine the sealing properties of the specimen; through the vacuum chamber is evacuated, the specimen is generated inside and outside The pressure difference is observed, and the shape of the sample is recovered after the sample is expanded and the vacuum is released, thereby determining the sealing performance of the sample. Technical Parameters: 1. Vacuum degree: -90kPa～0 2. Accuracy: Class 1 3. Effective size of vacuum chamber: Φ270mm × 200 mm (H) 4. Air source pressure: 0.7MPa (user-supplied) 5. Air source interface: Φ8 polyurethane tube 6. Dimensions: 460 × 360 × 500mm 7. Power: AC 220V 50Hz 8. Net weight: 12kg Standard configuration: host + experimental sealed barrel + air source line According to the standard: GB/T 15171 , ASTM D3078                                                                      More information! Jinan Jingji Testing Instrument Co., Ltd. Horizontal Arm Cmm,Nebula Horizontal Arm Cmm,Saturn Horizontal Arm Cmm,Horizontal Cmm With Multi-Functional Automated Precision Inc. , https://www.apiasean.com
Plastic bottle sealing method