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Industry info Wiki Q&A
Q what is pvc free plastisol ink
ColbertTate
WinifredCrane Release Time: August 4, 2024, 10:32 AM
PVC-free plastisol ink is a type of screen printing ink that omits the use of Polyvinyl Chloride (PVC) in its formulation. Traditionally, plastisol inks, known for their durability and vibrancy, have relied on PVC for their desirable properties. However, environmental and health concerns associated with PVC, such as the release of toxic chlorine gas when burned and the presence of phthalates (which can be harmful to human health), have led to the development of PVC-free alternatives. These inks aim to provide the same quality and performance as conventional plastisol inks but in a more environmentally friendly and safer manner. They are particularly appealing for use in the apparel industry, where sustainable manufacturing practices are increasingly prioritized.
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Q how much room should be left in electrical pvc conduit
ColbertTate
OlgaFlynn Release Time: July 30, 2024, 12:13 PM
When installing electrical PVC conduit, it is essential to adhere to the National Electrical Code (NEC) guidelines to ensure safety and functionality. The NEC specifies that a conduit should not be filled more than 40% of its internal area with conductors or cables. This limitation considers both heat dissipation and the ease of pulling wires through the conduit without damage. For conduits containing more than 2 wires, the fill ratio further decreases to 40%. It’s crucial to calculate the correct conduit size needed based on the number and size of wires to maintain this fill percentage, ensuring adequate space for airflow and preventing overheating. Utilizing conduit fill capacity charts, which factor in the outer diameter of the wires and the inner diameter of the conduit, can simplify this process. Planning with these regulations in mind will result in a safe and efficient electrical installation.
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Q are pvc caps permitted on ul-2085 tank
ChristianBilly
ColbertTate Release Time: July 30, 2024, 9:10 AM
PVC caps are generally not recommended for use on UL-2085 tanks, which are designed for flammable and combustible liquids. UL-2085 standards specify requirements for protected aboveground tanks, focusing on fire resistance, secondary containment, and physical protection. These standards are stringent regarding materials and construction methods to ensure safety and prevent leaks or fires. PVC, being a type of plastic, might not withstand the temperatures or physical conditions associated with these tanks, especially in fire scenarios. It is advisable to use materials and components explicitly rated and approved for use with UL-2085 tanks to maintain compliance and ensure safety. When in doubt, consulting the manufacturer or a licensed professional for guidance on compliant materials for tank modifications or repairs is essential.
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Q how to unglue pvc joint
ColbertTate
PollyChaucer Release Time: July 29, 2024, 9:58 PM
Ungluing a PVC joint is generally considered challenging since the solvent used for bonding essentially fuses the pieces together at a molecular level. However, if disassembly is necessary, one can try heating the joint with a heat gun or hairdryer to soften the adhesive, allowing some room for manipulation. Care must be taken not to overheat and damage the PVC. If heating doesn’t work, the most reliable alternative is to cut out the glued section and replace it with a new piece, using a coupler for reconnection. Always wear protective gear when dealing with heated materials and sharp tools.
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Q is pvc board uv resistant
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ClydeNora Release Time: July 26, 2024, 12:29 AM
PVC (Polyvinyl Chloride) boards inherently possess some level of UV resistance due to the nature of the PVC material, which is less susceptible to UV damage compared to other plastics. However, untreated PVC can still degrade over time when exposed to significant amounts of UV light, leading to discoloration and brittleness. To enhance UV resistance, PVC boards are often treated with UV stabilizers or coated with UV-resistant materials during the manufacturing process. These treatments can significantly extend the lifespan of PVC boards in outdoor applications, making them a more durable choice for signage, construction, and outdoor fixtures. The effectiveness of the UV protection can vary based on the quality of the treatment and the specific product, so it’s important to verify the UV resistance of a PVC board for outdoor use.
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Q what size pvc piping for splash pads
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WalkerNorton Release Time: July 25, 2024, 2:10 PM
The ideal size of PVC piping for splash pads largely depends on the overall size of the pad and the flow rate requirements of the splash pad features. Generally, 1.5 to 2-inch diameter PVC pipes are commonly used for residential splash pads. These sizes are sufficient for handling the water volume and pressure needed for a small to medium-sized splash pad. For commercial or larger splash pads with multiple features or high water flow rates, larger pipes, such as 2.5 to 4-inch diameters, might be necessary to ensure adequate water supply and pressure to all elements of the splash pad. It’s essential to calculate the total flow rate needed for your specific splash pad design and consult with a hydraulic engineer or a professional plumber to select the appropriate pipe size. This assures that your splash pad operates efficiently without overburdening the system, ensuring longevity and reducing maintenance issues.
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Q how to heat resistant pvc
JoCotton
ColbertTate Release Time: July 24, 2024, 9:40 PM
Heating resistance in PVC (Polyvinyl Chloride) can be enhanced through several methods. One common approach is the addition of heat stabilizers during the manufacturing process, which can reduce degradation when exposed to high temperatures. Examples include metallic soaps, organotin compounds, and certain minerals. Another method involves blending PVC with other materials that have higher heat resistance, such as ABS (Acrylonitrile Butadiene Styrene), to improve its thermal properties. Additionally, using CPVC (Chlorinated Polyvinyl Chloride), a version of PVC that has been chlorinated, offers higher temperature resistance compared to regular PVC. This makes CPVC more suitable for applications requiring exposure to higher temperatures. However, it’s essential to note that while these methods can enhance PVC’s heat resistance, its performance and suitability should be carefully evaluated for specific applications, considering the environmental and mechanical stresses involv...
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Q how to fix leaking pvc joint without cutting
ColbertTate
HobartWat Release Time: April 13, 2024, 7:07 AM
To fix a leaking PVC joint without cutting, you can use PVC repair epoxy or specialized sealant. First, shut off the water supply and dry the leaking area. Apply the epoxy or sealant around the leaky joint, ensuring it completely covers the affected area. For better adhesion, roughen the surface with sandpaper before applying. Let it cure according to the product’s instructions. This method is a temporary fix and may not be as durable as replacing the joint. Monitoring the repair for any future leaks is recommended.
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