Author - upwelltest

Specific indicators required by the specification of plastic corrugated pipes

Specific indicators required by the specification of plastic corrugated pipes

Specific indicators required by the specification of plastic corrugated pipes: 1. Raw materials The raw materials of plastic corrugated pipes should use original granular raw materials. It is strictly forbidden to use powdered and re-granulated granular raw materials. 2. Appearance The appearance of plastic corrugated pipes should be smooth and uniform in color. The inner and outer walls are not allowed to have partition ruptures, bubbles, cracks, lumps and scratches that affect use. 3. Ring stiffness The ring stiffness of plastic corrugated pipes should not [...]

2025-02-18 By News Read more...
Geomembranes testing

Introduction to ASTM Standards for Geomembranes

1. Overview of Geomembranes Geomembranes are effective engineering materials used in civil engineering, environmental protection, and hydraulic engineering. They are primarily utilized for functions such as impermeability, isolation, drainage, and protection, and find wide application in landfills, dam bodies, channels, tunnels, and reservoirs. 2. Introduction to ASTM Standards ASTM International (American Society for Testing and Materials) is an international standards organization responsible for developing and publishing testing standards and specifications for various materials and products. For geomembranes, ASTM has established a series [...]

2024-11-28 By News Read more...
Negative pressure Leak Tester

WHAT IS THE PRINCIPLE OF POSITIVE PRESSURE SEALING TESTER

    In daily work and life, we often need to use positive pressure sealing tester. So what is the principle of positive pressure sealing tester?   What is the principle of positive pressure seal tester   Positive pressure sealing tester is an instrument used to test the sealing performance of product packaging. Its working principle is based on the following two aspects:  The positive pressure sealingtester is a positive pressure source (such as gas) that provides stable pressure. After filling a certain pressure of gas into the [...]

2024-11-18 By News , Read more...
Plastic Melt Flow Index Tester

HOW TO USE THE MELT FLOW INDEX TESTER TO IMPROVE PRODUCT QUALITY

The plastic melt flow index tester is an instrument used to measure the melt flow rate of thermoplastics at a certain temperature and pressure. This test is essential for evaluating the processing performance of materials and can help manufacturers optimize production processes to improve product quality.   In the plastics industry, the quality of raw materials directly affects the performance of products. Melt flow index (MFI) is an important indicator for measuring the flow performance of plastic melts, which reflects the fluidity of plastics under specific conditions. [...]

2024-10-30 By News , Read more...
ASTM F2029 Plastic Packaging Film Heat Seal Tester

PRINCIPLE AND APPLICATION OF FILM HEAT SEAL TESTER ASTM F2029

What are the principles and applications of heat seal testing   With the large-scale application of film materials, the test items for film materials have also become diversified. Among them, the heat seal testing of film materials is an important indicator.   The heat seal tester is a laboratory instrument for food companies, pharmaceutical companies, daily chemical product companies, packaging and raw material manufacturers. Its working conditions simulate the three elements of pressure, temperature and time in the packaging link of the packaging production [...]

2024-10-22 By News , Read more...
ASTM D1894, ISO8295 PET Films Coefficient of Friction Tester

PACKAGE MATERIALS TESTING PRINCIPLE AND METHOD OF FRICTION COEFFICIENT ISO 8259

The coefficient of friction refers to the ratio of the friction between two surfaces to the vertical force acting on one of the surfaces. It is related to the roughness of the surface, but not to the size of the contact area. According to the nature of the movement, it can be divided into the dynamic friction coefficient and the static friction coefficient. Sliding friction is generated when two objects contact each other and slide relative to each other.   The [...]

2024-10-18 By News , Read more...
Electronic universal testing machine

How to Solve Positive and Negative Errors in an Electronic Universal Testing Machine

The electronic universal testing machine is an important device for the mechanical research of non-metallic materials. However, there are various models of electronic tensile testing machines, each capable of meeting different measurement needs. Regardless of the type of non-metallic tensile testing machine, errors are bound to occur during measurement. Therefore, people often conduct multiple experiments to finally determine accurate values. By using the method of multiple experiments, the error rate of the measured values can be avoided, thereby reducing the [...]

2024-09-02 By News , Read more...
EMC Testing Equipment,10 KV Surge Simulator

Basic Principles and Applications of Surge Tester

Basic Principles of the Surge TesterA surge tester is an advanced high-voltage power supply and measurement unit, involving complex electrical and electronic engineering knowledge. Specifically, the surge tester operates through the following steps: Power Conversion: The surge tester uses a standard 115V or 220V AC power supply and converts it to a higher voltage required for surge testing. Voltage Rectification and Charging: The higher voltage is rectified into a direct current (DC) voltage, which charges a large discharge capacitor. One end of [...]

2024-08-01 By News Read more...
High Speed Tensile Impact Testing Machine

ASTM F2634 − 15 And ISO 13953 Testing Polyethylene (Pe) Butt-Fused Joints Methods Different Parts

High Speed Tensile Impact Testing Machine is deign for ASTM F2634 − 15 Polyethylene (PE) Butt Fusion Joints using Tensile-Impact Method, High Speed Tensile Impact Testing Machine The main difference between the ASTM F2634 − 15 High and ISO 13953 – Determination of the tensile strength and failure mode of test pieces from a butt-fused joint are Four main point   1 The testing speed   ASTM F2634 − 15 Testing speed need 152mm/s for testing the wall thickness less than 1.25 inches, and 102mm/s for testing the wall thickness over [...]

2024-07-25 By News , , Read more...
Single Yarn Strength Tester

Maintenance Tips for Single Yarn Strength Tester

Single Yarn Strength Tester is an instrument used to measure the tension and strength of yarn. Single Yarn Strength Tester Maintaining it can ensure its accuracy and long-term reliability. Here are some maintenance tips for single yarn strength Tester:Regular cleaning: Clean the external and internal parts of the single yarn strength Testerr regularly. Use a soft cloth or brush to remove dust, dirt and yarn residue. Avoid using corrosive cleaning agents to avoid damaging the instrument. Keep dry: The single yarn strength meter [...]

2024-07-18 By News Read more...