Advantages and disadvantages of continuous roll bags

2025-05-10

Advantage Convenient to use: The continuous roll bag is provided in the form of a roll, and users can tear and use it at any time according to their actual needs, without the need for pre cutting or preparing bags of different specifications, greatly improving packaging efficiency. For example, at the supermarket checkout counter, after a customer purchases a product, the cashier can quickly tear off the bag from the roll and pack it. Low cost: The raw material cost for producing continuous roll bags is relatively low, and the production process is simple, which can achieve large-scale production. Therefore, its price is relatively low and suitable for large-scale use. For merchants, using roll up bags can reduce packaging costs. Strong flexibility: Various specifications, sizes, and colors of continuous roll bags can be produced according to different packaging needs to meet the packaging requirements of different products. For example, small-sized roll up bags can be used to package candies, small accessories, etc., while large-sized ones can be used to package clothing, bedding, etc. Disadvantage Environmental issues: Traditional roll up bags are mostly made of non degradable plastics. If not handled properly after extensive use, they can become "white pollution" and cause ...

Tell me the correct usage method of the sampling bottle

2025-05-10

The correct use of sampling bottles Preparation before use Cleaning: New sampling bottles need to be thoroughly cleaned before use to remove any impurities and contaminants that may be present. Choose the appropriate cleaning method based on the material and purpose of the sampling bottle. For example, glass sampling bottles can usually be soaked in potassium dichromate solution, and then rinsed clean with tap water and distilled water in sequence; Plastic sampling bottles can be cleaned with mild detergent and then rinsed with pure water. For sampling bottles used for high-purity sample collection, special cleaning and passivation treatment may also be required. Drying: The cleaned sampling bottle should be dried to avoid moisture affecting the sample. The drying method can be selected according to the material and shape of the sampling bottle, such as drying, air drying, nitrogen blowing, etc. For some moisture sensitive samples, it is necessary to ensure that the inside of the sampling bottle is completely dry. Preprocessing (if necessary): Some special sample collection may require pre-processing of the sampling bottle. For example, when collecting volatile organic compound samples, in order to reduce the adsorption of the sample on the inner wall of the sampling bottle, a layer of an...

Explain the dynamic weighing principle of the dosing weighing system

2025-05-10

The dynamic weighing principle of dosing&weighing system Technological process: Calibration: Establish a linear relationship between mass flow rate and sensor signal using standard materials of known mass, such as glass microspheres. Real time monitoring: During the material conveying process, sensors continuously collect signals and combine them with speed sensors (such as screw speed) to calculate instantaneous flow rate. Closed loop control: PLC dynamically adjusts the feeder speed or valve opening based on the deviation between the set value and the actual flow rate. Key parameters: Flow range: 0.1 kg/h~100 t/h (depending on feeder type and sensor range). Control accuracy: ± 0.5%~± 2% (lower than static weighing in dynamic environments). Repeatability: The RSD (relative standard deviation) of 10 consecutive measurement results is less than 1%. case: Coating of positive electrode material for lithium batteries: The dynamic weighing system controls the slurry flow rate (accuracy ± 1%) to ensure that the density fluctuation of the electrode surface is less than ± 1.5%. ...

Suggestions for selection of powder transfer system

2025-05-10

1. Select based on material characteristics Ultra fine/highly active powders should be transferred in sealed containers or vacuum transfer systems first; Priority mechanical conveying system for high viscosity/easily clumped materials. 2. Balancing process requirements and costs Long distance and large-scale transmission using pneumatic conveying; Select vacuum transfer system for laboratory small batch and high cleanliness requirements. 3. Strengthen security and compliance design Highly toxic/explosive powders require explosion-proof motors and electrostatic grounding devices; The pharmaceutical/biotech industry requires FDA and EU GMP certification. 4. Select Scalability System Modular design facilitates future capacity upgrades (such as increasing transmission channels); Digital interfaces (such as OPC UA) support integration with MES/ERP systems. ...

Where are sterile continuous bags mainly used

2025-05-10

1. Pharmaceutical industry applications Large volume infusion (LVP): Sterile continuous bags can replace traditional glass bottles, reducing the risk of breakage and transportation costs. Case: A biopharmaceutical company adopted PET/EVOH composite bags, which increased filling efficiency by 30% and saved packaging costs of over 5 million yuan annually. Biopharmaceutical stock solution storage: Multi layer co extruded film bag compatible with temperature range of -80 ℃ to 121 ℃, suitable for freezing storage and transportation. 2. Food industry applications Aseptic dairy products: Continuous bag packaging extends shelf life to over 6 months and reduces the use of preservatives. Case: A dairy company used sterile continuous bag filling for room temperature yogurt, resulting in a 15% increase in market share. 3. Medical device application Dialysis solution: Aseptic bag packaging to avoid secondary contamination, suitable for automated dialysis equipment. Case: A certain dialysate supplier improved the product qualification rate from 95% to 99.8% through aseptic continuous bag technology....

What are the advantages of Pop-Up benchtop lsolators

2025-05-10

1. Efficient isolation performance It can effectively prevent external microorganisms, particles, chemicals, etc. from entering the operating area, providing a highly clean and sterile environment for the product. For example, in the production of sterile drugs, it can be ensured that the probability of microbial contamination during the drug production process is extremely low, ensuring product quality and safety. 2. Flexibility and adaptability Flexible materials can be customized and installed according to different operational requirements and equipment shapes, adapting to various complex operating environments and space limitations. Whether it is a small laboratory workstation or a large pharmaceutical production workshop, suitable sizes and shapes of flexible isolators can be found. 3. Convenience of operation Transparent material facilitates operators to observe internal operations and adjust operating parameters in a timely manner. At the same time, reasonable interface design makes personnel operation, item transfer, and equipment connection more convenient, improving work efficiency. 4. Mobility Compared to traditional rigid isolators, flexible isolators are lightweight and compact, making them easy to move and install between different operating areas. They can be flexibl...

Can you briefly explain the performance advantages of stability bags

2025-05-10

1. Aseptic assurance Many stability bags use strict aseptic processing techniques in the production process, such as gamma ray irradiation sterilization or ethylene oxide sterilization, to ensure that the bag body itself is sterile. In the fields of medicine and biotechnology, this sterile characteristic can meet the high requirements for sterile liquid preparation, reduce the risk of microbial contamination, and ensure product quality and safety. 2. Good flexibility and foldability The dispensing bag can be easily folded when not in use, occupying a small space and facilitating storage and transportation. During use, it can automatically expand according to the injection volume of the liquid, adapting to the preparation needs of different volumes of liquid. For example, in some field rescue or temporary laboratory scenarios, foldable open dispensing bags are easy to carry and deploy quickly. 3. Visibility Part of the stability bags are made of transparent or semi transparent materials, or have dedicated observation windows for operators to observe the color, turbidity, liquid level changes, and other conditions of the liquid inside the bag in real time. This is of great significance for timely adjustment of the liquid preparation process, determining whether the liquid preparation is completed...

What are the characteristics of powder chagring bags

2025-05-10

1. Diverse materials Plastic materials: Common ones include polyethylene (PE), polypropylene (PP), etc. PE material is soft and has good toughness, with certain moisture resistance, suitable for powder materials that do not require particularly high moisture resistance, such as some powder additives used in construction; PP material has good heat resistance and chemical stability, and can withstand a certain degree of acid-base corrosion. It is commonly used in powder raw material packaging in the chemical industry. Paper material: High strength paper such as kraft paper is generally used, which has certain moisture-proof and leak proof properties after special treatment. Paper feeding bags have relatively low costs, are recyclable, and environmentally friendly. They are commonly used in industries such as food and feed that require high hygiene standards and the materials themselves are not easily affected by moisture and deterioration. Composite material: Combining the advantages of various materials, such as aluminum foil composite material, which is composed of aluminum foil and plastic film, it has excellent barrier properties and can effectively prevent the erosion of powder materials by moisture, oxygen, and light. It is particularly suitable for pharmaceutical powders, fine chemical...