1、 Core Technology Analysis of External Vacuum Packaging Machine

1. Vacuum pumping technology

The external vacuum packaging machine achieves gas extraction by inserting the suction nozzle into the packaging bag. The single suction rate can reach 15L/s, and the vacuum degree is stable in the range of 0.08-0.1MPa, meeting high hygiene standards for food, medicine, and other industries. The pumping device driven by servo motor can accurately control the pumping time (adjustable from 0.5-10 seconds), and with the help of pressure sensors, it can monitor the vacuum degree inside the bag in real time, with an error rate of less than 1.5%.

2. Sealing control technology

Using pulse heating sealing technology, the nickel chromium alloy heating strip heats up to 180-220 ℃ within 0.3 seconds, with a sealing strength of 15-25N/15mm, suitable for materials such as PE, PP, aluminum foil composite film, etc.

The sealing pressure is adjusted by a pneumatic device (0.4-0.8MPa), combined with a dual sealing line design to ensure sealing integrity and compression resistance (pressure resistance ≥ 0.15MPa).

3. Materials and Hygiene Design

The whole machine adopts a 304/316L stainless steel frame, with a contact surface Ra ≤ 0.8 μ m, in compliance with GMP certification standards, and supports CIP online cleaning.

Food grade silicone sealing rings can withstand temperatures ranging from -40 ℃ to 250 ℃, with a service life of over 100000 cycles.

2、 Structural innovation of external vacuum packaging machine

1. Multi specification adaptation system:

The suction nozzle supports quick replacement of 5-50mm caliber and can handle packaging needs ranging from 50g small food to 10kg industrial raw materials.

2. Intelligent interactive interface:

The 10 inch touch screen integrates 200 sets of process formulas and supports three-dimensional parameter linkage control of vacuum degree time temperature, reducing the production and debugging time to 3 minutes.

3. Energy saving and efficiency enhancing design:

The variable frequency vacuum pump is 30% more energy-efficient than traditional models, and when combined with a waste heat recovery system, it saves over 20000 yuan in electricity costs annually (calculated based on 24-hour operation).

3、 Typical application scenarios of external vacuum packaging machine

1. Food processing industry

Fresh meat packaging achieves 99.9% oxygen barrier, combined with cold sealing technology (sealing temperature ≤ 60 ℃), reducing blood leakage by 80%.

The coffee beans are packed with nitrogen for preservation, with a residual oxygen content of less than 0.5%, and the shelf life is extended to 18 months.

2. Pharmaceutical and Electronic Industry

The residual oxygen rate of aluminum-plastic blister packaging for drugs is less than 1%, and the humidity is less than 5% RH, meeting the packaging integrity testing requirements of USP<671>.

The moisture-proof packaging of the circuit board has passed the 72 hour double 85 test (85 ℃/85% RH), and the salt spray protection level has reached IP6X.

3. Household and logistics field

The compressed packaging volume of cotton quilts is reduced by 70%, combined with anti puncture composite film, resulting in a transportation damage rate of less than 0.1%.

The single machine processing speed of latex pillows reaches 15 pieces/hour, and the vacuum degree is maintained for more than 5 years.