Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
News
Home > News
FLAME RETARDANT INITIATIVES UNDERWAY TO ADVANCE A CIRCULAR ECONOMY
2022 / 08 / 20
In a circular economy, it is important to keep resources in use for as long as possible and recover them at the end of their service life, and to be reused as raw material for new products. The flame retardant industry is committed to seeking ways to advance the circularity of flame retardant chemistries. A recently conducted pilot program shows that it is readily possible to use unique markers to represent specific flame retardants (e.g., brominated flame retardants) for rapid identification even when the brominated flame retardants are formulated into plastics. The project demonstrates that unique marker systems can be deployed to help whole value chains improve traceability and circularity of flame retardants throughout the life cycle of plastic used in consumer products. Waste and Electronic and Electrical Equipment (WEEE) Plastics and Circularity: In December 2018, the European Commission launched the Circular Plastic Alliance with the aim of boosting the EU market for recycled plastic with an initial pledge of 10 million tonnes by 2025 and with more than 230 signatories to date. The recycle of flame retardant containing plastics can aid in reaching this important objective. A report by SOFIES, a leading sustainability consultancy, provides a comprehensive analysis regarding WEEE plastics flows and recycling efforts in Europe. The report presents the successes and overarching challenges in making WEEE plastic streams more circular. Among the findings in the report is that the presence of brominated flame retardants (BFRs) in WEEE plastics does not reduce recycling yields more than other flame retardants in WEEE plastics.
2022 / 08 / 13
Fullerene (C60, aka. buckybull) is a carbon allotrope, which has a spheroidal-shaped structure. Combination of magnificent thermal stability and unique physical and electrical properties of fullerene with popular advantages of polymers has attracted a lot of research interests.101-103 However, only a few studies have focused on fullerene flame retardancy effect of polymers. Fullerene has a high reactivity against free radicals. It can act as a free radical scavenger to trap radicals produced during combustion in the gas and/or condensed phase and delay thermo-oxidative degradation of polymers.104-108 Fullerene nanoparticles have a tendency to agglomerate due to their strong Van der Waals forces and significant specific surface area. This, in turn, can result in poor fire performance of the polymer composite. To this extent, it is important to assure uniform dispersion of fullerene nanoparticles in polymer matrix. Song et al reported successful incorporation of pristine fullerene nanoparticles in PP matrix via melt compoun
Cellulose nanofibers flame retardant
2022 / 08 / 13
Cellulose is the most abundant organic polymer, which is found in cell wall of plants as well as in fungi, bacteria, and algae. Cellulose has numerous glucose units with high degree of polymerization based on its extraction method. Figure 4 represents a cellulose fiber organization in a plant cell wall, which is consisted of many cellobiose repeating units.13, 73 Char formation mechanism is very complicated in cellulosic materials. During thermal decomposition, cellulose can produce an insulating char layer under certain specifications, depending on its extraction method and surface treatment. Degradation condition and existing species in the combustion environment govern the amount of produced char and its thermal stability. In low temperatures, degradation of cellulose leads to the formation of anhydrocellulose. As temperature goes up, the remaining cellulose unzips into tar and further anhydrocellulose components and finally proceeds to char and gas formation. Many researches were carried out to improve fire retardancy of cellulose by chemical surface modifications or incorporation of other fire retardants (e.g. phosphorous FRs). These attemp
Metallic and non-metallic particles flame retardant
2022 / 08 / 13
Metallic nanoparticles have received considerable attention for their applications as flame retardants in different polymer matrices. Metallic nanoparticles exhibit different reaction mechanisms against fire according to their structure; some metal nanoparticles (metal hydroxide particles) utilize hydrated minerals and release water molecules as they decompose in the presence of fire and provide an endothermic reaction. In this case, the cooling effect would increase the self-extinguishing ability in nanocomposites. Aluminum tri-hydroxide (ATH) and magnesium hydroxide (MH) are two non-halogen fire retardant additives that undergo endothermic reaction and interfere with the combustion process when exposed to heat (Equation 6 and Equation Incorporation of the metal hydroxide nanoparticles in polymer composites would result in a noticeable increase in limiting oxygen index (LOI). This phenomenon is due to yielding a barrier on the polymer surface, which in turn can lower the heat flux provided by flame and improve the fire retardancy. The formation of char is another mechanism in some fire retardant materials, such as, alumina trihydrate (ATH) that delays ignition and fire development.41 In addition, some metal hydroxide FRs release water when de
2022 / 08 / 12
Polyvinyl Chloride (PVC) is one of the most widely used polymers in the world. Due to its versatile nature, PVC is used extensively across a broad range of industrial, technical and everyday applications including widespread use in building, transport, packaging, electrical/electronic and healthcare applications.PVC is a very durable and long lasting material which can be used in a variety of applications, either rigid or flexible, white or black and a wide range of colours in between.The first patent for a polymerisation process to manufacture PVC was granted to German inventor Friedrich Klatte in 1913 and PVC has been in commercial production since 1933. The material now accounts for about 20% of all plastic manufactured world-wide, second only to polyethlene.1 ProductionThe essential raw materials for PVC are derived from salt and oil. The electrolysis of salt water produces chlorine, which is combined with ethylene (obtained from oil) to form vinyl chloride monomer (VCM). Molecules of VCM are polymerised to form PVC resin, to which appropriate additives are incorporated to make a customised PVC compound .How is PVC Made.jpgThe PVC production process consists of 5 steps:- The extraction of salt and hydrocarbon resources- The production of ethylene and chlorine from these resources- The combination of chlorine and ethylene to make the vinyl chloride monomer (VCM)- The polymerisation of VCM to make poly-vinyl-chloride (PVC)- The blending of PVC polymer with other materials to produce different formulations providing a wide range of physical properties.1.1 Raw Materials PVC takes less non-renewable fossil fuel to make than any other commodity plastic because unlike other thermoplastics which are entirely derived from oil, PVC is manufactured from two starting m
2022 / 08 / 12
1.2 Bi-ProductsProducts and bi-products of PVC manufacture include Chlorine and Caustic Soda, two of perhaps the most important manufacturing "ingredients" not only for PVC manufacture, but many other applications. Chlorine is used in the manufacture of life-saving medication, indeed 85% of all pharmaceuticals. Caustic Soda too has many key, everyday applications, including the following applications: pulp and paper manufacture, soap and surfactant manufacture, detergents and cleaners, aluminia extraction, textiles and in the food industry2 Physical PropertiesType ProductTensile Strength 2.60 N/mm²Notched Impact Strength 2.0 - 45 Kj/m²Thermal Coefficient of expansion 80 x 10-6Max Cont Use Temp 60 oCDensity 1.38 g/cm32.1 Resistance to ChemicalsType ProductDilute Acid Very GoodDilute Alkalis Very GoodOils and Greases Good (variable)Aliphatic Hydrocarbons Very GoodAromatic Hydrocarbons PoorHalogenated Hydrocarbons Moderate (variable)Alcohols Good (variable)3 PVC and AdditivesBefore PVC can be made into products, it has to be combined with a range of special additives. These additives can influence or determine a number of the products properties, namely; its mechanical properties, weather fastness, its colour and clarity and indeed whether it is to be used in a flexible application. This process is called compounding. PVC's compatibility with many different kinds of additives is one of the materials many strengths and is what makes it such a highly versatile polymer. PVC can be plasticised to make it flexible for use in flooring and medical products. Rigid PVC, also known as PVC-U (The U stands for "unplasticised") is used extensively in building applications such as window frames. The fun
2022 / 08 / 12
3.2 Optional AdditivesThese optional additives are not strictly necessary for the integrity of the plastic but are used to draw-upon other properties. Optional additives include processing aids, impact modifiers, fillers, nitrile rubbers, pigments and colorants and Flame Retardants.4 Benefits of PVCPVC has excellent electrical insulation properties, making it ideal for cabling applications. Its good impact strength and weatherproof attributes make it ideal for construction products.PVC has extensive European food contact and medical approvalsPVC is easy to process, long lasting, tough and lightPVC consumes less primary energy during production than any of the other commodity plasticsPVC uses less primary energySource: Software GaBi 4 Database - PE EuropeWith high clarity and excellent organoleptic properties (no transfer of taint to food) it is equally suited for use in short term applications such as specialised packaging.PVC has a relatively small carbon footrpint, the below infographic indicates the CO2 impact PVC compared to other productsCarbon Footprint of PVCPVC windows help to cut energy bills and PVC-based windows account for most BFRC `A` Rated Energy Efficient WindowsPVC is fully recyclable. Due to its properties it reprocesses well and can be recycled into second (or third life) applications with ease.5 ApplicationsPVC is a versatile material that offers many possible applications, these include; window frames, drainage pipe, water service pipe, medical devices, blood storage bags, cable and wire insulation, resilient flooring, roofing membranes, stationary, automotive interiors and seat coverings, fashion and footwear, packaging, cling film, credit cards, vinyl records, synthetic leather and other coated fabrics. Examples of PVC Use5.1 Constr
2022 / 08 / 12
5.2 HealthcarePVC in HealthcarePVC has been used for hundreds of life-saving and healthcare products for almost 50 years being used in surgery, pharmaceuticals, drug delivery and medical packaging due to its unrivalled performance characteristics and cost-efficiency.Typical examples of PVC healthcare products include:"Artificial skin" in emergency burns treatmentBlood and plasma transfusion setsBlood vessels for artificial kidneysCatheters and cannulaeBlood bagsContainers for intravenous solution giving setsContainer for urine continence and ostomy productsEndotracheal tubingInflatable splintsSurgical and examination glovesShatter-proof bottles and jarsOvershoesProtective sheeting and tailored coversMattress and bedding coversWall and floor coveringsBlister and dosage packs for pharmaceuticals and medicinesFlexible PVC is used to make blood storage bags, and in fact is the only material approved by the European Pharmacopoeia for this purpose. The nature of the material means that blood can be stored safely for longer.PVC Pharmaceutical PackagingPVC packaging is also widely used in the packaging of pharmaceutical products.Other examples of PVC healthcare products: "Artificial skin" in emergency burns treatment, blood and plasma transfusion sets, blood vessels for artificial kidneys, catheters, blood bags, containers for intravenous solution giving sets, container for urine continence and ostomy products, endotracheal tubing, feeding and pressure monitoring tubing, inhalation masks, surgical and examination gloves, shatter-proof bottles and jars, mattress and bedding covers and blister and dosage packs for pharmaceuticals and medicines5.3 Electronics
2022 / 08 / 12
6 PVC and SustainabilityPVC's contribution is by no means limited to its products. The PVC industry is also setting a unique example in the process of working together as a supply chain in driving forward sustainable development.There are many definitions of Sustainability and Sustainable Development, but it can best be defined by the three main pillars of sustainability; social, economic and environmental."Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs."Economic SustainabilityThe PVC industry has enduring pre-war origins and employs huge numbers of people worldwide across the supply chain, which is spread between large multinationals and SME's making a significant contributing to the growth of the global economy .Social Sustainability:Companies offer rewarding, long-term employment opportunities (including training opportunities), with safe working environments and whose products contribute to good quality homes, through energy efficient windows to the safe transportation of drinking water. Generally, PVC products are light-weight to install - thus a potential for fewer accidents, but far from just providing the windows and pipes for your property, cabling, ducting, roofline products are usually PVC. Environmental SustainabilityIn terms of environmental sustainability there are common elements in all studies (on PVC and other materials) consistent with reducing human impact on eco-systems:With world population over over 7 Billion and growing we need to conserve scarce resources and we should minimise `human` land-usage in order to protect biodiversity by giving priority to essential uses (e.g. food crops). To achieve this, we need to minimise or eliminate waste by ef
2022 / 08 / 12
6.3 Eco-profiles & Life Cycle AssessmentOn behalf of the European Commission, and as part of a full review of PVC, PE Europe Consulting Group together with the University of Stuttgart undertook a Life Cycle Assessment of PVC and of Principal Competing Materials. The report, published June 2004, showed PVC products to be comparable to alternatives in their environmental impact. The report can be downloaded from the Europa website.Eco-profiles provide environmental analysis for a product from 'cradle-to-gate' (as opposed to the 'cradle-to-grave' approach of Life Cycle Assessment). Eco-profiles of PVC were updated in 2006 and can be downloaded from the PlasticsEurope Eco-profiles webpages.6.4 Total Cost of Ownership StudyIn 2011, the European Council of Vinyl Manufacturers (ECVM) commissioned an independent company to undertake a study on the Total Cost of Ownership (TCO) of PVC products. A Total Cost of Ownership study takes into account all costs associated with a product over its entire life cycle.The study focussed on three particular applications; windows, flooring and outdoor pipes, utilising data from Germany and Italy (judged to be a fair representation of conditions in north and south European countries).The study concluds that not only does PVC provide decisive cost advantages due to its low initial purchase price but also in its low cost of ownership throughout the life of the product.(THE END)
2022 / 08 / 06
What is impact modifier?Impact modifier is a chemical that can improve the low temperature embrittlement of polymermaterials and gives them higher toughness.Pure PVC resin is a hard and brittle material with poor impact strength, its generally only 3-5 kJ/m. Especially, it has poor impact performance at low temperature and poor weather resistance, whichlimits its application in many fields. Therefore, it is necessary to add impact modifier to improve thetoughness and weatherability of PVC. The technology of blending impact modifier in PVC polymercan effectively toughen brittle rigid PVC. This impact modifier is a kind of polymer elastomer with certain compatibility with PVC. It can not only keep the high modulus and rigidity of UPVC, but alsogreatly improve its notch impact strength and obviously improve its low temperature impact strength. Because the mixing process of blending modification method is simple and flexible.At present, common UPVC impact modifiers are chlorinated polyethylene (CPE), polyacrylate (ACR), ethylene-vinyl acetate copolymer (EVA), methyl methacrylate-butadiene-styrene terpolymer (MBS) and acrylonitrile-butadiene-styrene copolymer (ABS), which belong to rubber elastomer impact modifier.
common foaming agents for rubber and plastics
2022 / 08 / 06
1. Azodicarbonate, AC blowing agent,ADC foaming agent Usage: suitable for PE, PVC, PS, PP, ABS, etc. The decomposition temperature of AC blowing agent is high, and the bubbles produced are uniform and compact. It is suitable for all kinds of foaming products, such as closed cell foam, atmospheric or pressurized foaming body, thick or thin foamed body, etc. Such as PVC and plasticized paste foam, polyolefin calendering and moulding foam, foamed artificial leather, etc. 2.Foamer H,Blowing agent H,Foaming agent H,N, N'-dinitrosopentamethylene tetramine; It is mainly used for manufacturing sponge rubber and polyvinyl chloride in plastics. Large amount of gas and high foaming efficiency. 3. p-toluene sulfonyl hydrazide, Foaming agent TSH, Usage: This product is a low-temperature foaming agent, suitable for PVC and other plastics and rubber. It is especially suitable for manufacturing closed-cell foam plastics and sponge rubber. This product can not be used with blowing agent H, because the reaction of these two blowing agents produces a lot of heat, which can lead to internal burning of the product. This product should not be used with lead salt to avoid the precipitation of black lead sulfide.
2022 / 08 / 06
Introduce of raw materials for SPC floor production SPC(stone plastic compound)floor is a new type of environmental protection floor, with zero formaldehyde, mildew-proof, moisture-proof, fire-proof, insect-proof, simple installation and other characteristics. Widely used in offices, hotels, business, home and other indoor places. The raw materials be needed to produce SPC flooring are as follows
2022 / 08 / 06
In addition to inorganic fire retardants, certain plants have developed a defense mechanism against fire invasions due to their specific molecular structure. Bio based compounds in these plants owe their intrinsic fire retardancy to the formation of a thermally stable char layer when exposed to fire. A review of bio based flame retardants has been previously published by Costes et al.13 Briefly, char formation mechanism is initiated as the stored water in wood starts to be liberated during thermal decomposition of wood components (lignin, cellulose, etc.). This barrier char layer insulates the underlying wood from further burning by hindering the heat exposure. Biomass is the largest resource for bio-based materials and a massive range of chemicals and biofuels are produced based on biomass derivatives, thanks to their abundant resources and reasonable pricing. The inherent char formation ability of biomass and the resulting fire retardancy makes it desirable for FR applications.61 Up to 75% of biomass is composed of saccharide-based products (e.g. cellulose, hemicellulose, and lignin), while the rest is mostly energy storage components (e.g. starch), proteins, and vegetable oils. Lignin is one of the most abundant bio-based
Carbon nanotube flame retardant
2022 / 08 / 06
A wide range of studies have shown that carbon nanotubes (CNTs) either single-walled (SWCNTs) or multi-walled (MWCNTs) are among the most promising alternatives for traditional flame retardants to be used in different polymers, such as, PP, PE, PLA, lignocellulose, epoxy resin.84-88 These studies have demonstrated that adding a small amount of well-dispersed CNTs (<5 wt%) to polymer composites can significantly improve the fire behavior due to their fascinating chemical and physical properties. CNTs have a highly elongated structure with a large aspect ratio. Their specific geometry enables them to create a strong protective network in the condensed phase to protect the underlying polymer from heat. This behavior could result in suppression of heat release rate (pHRR reduction in cone calorimetry) and weight loss rate during the combustion.85, 90 Moreover, low flame spread rate, smoke-suppression, and anti-dripping properties have been reported while incorporating CNTs in differen
2022 / 08 / 06
Geographer is a two-dimensional carbon nano material with outstanding physical properties, such as, electrical properties and excellent thermal conductivity due to its large surface area.93, 94 Recently, graphene flame retardants have shown promising impact on thermal stability of different polymers, mostly because of their insulator barrier effect.95-98 Graphene is mostly prepared by removal of oxygen groups from the surface of graphene oxide (GO) or reduced graphene oxide (rGO).99 The challenge involving the application of graphene nanosheets in the polymer matrix is to achieve a good dispersion. Graphene layers have a high tendency to restack because of their strong Van der Waals forces and π-π interactions.95,
How to solve the problem of bending deformation in the extrusion of u-PVC profile?
2022 / 07 / 30
How to solve the problem of bending deformation in the extrusion of u-PVC profile? Bending deformation of PVC profiles is a common problem in the extrusion process, and its causes are mainly: uneven discharge of material from the mouth die; inadequate cooling of materials and inconsistent post-shrinkage when cooling and shaping; equipment and other factors. 1. Ensure the concentricity and level of the whole line of the extruder, and correct the concentricity and level of the extruder, mouth die, sizing die and water tank at each die change. 2. Assemble the mouth die carefully before starting the machine to make the gap of each part consistent. If the uneven material discharge from the mouth die is found when starting the machine, adjust the temperature of the mouth die according to the bending and deformation direction of the billet to ensure the uniform material discharge from the mouth die, if adjusting the temperature of the mouth die is not effective, the plasticization degree of the material can be increased appropriately. 3. Adjust the cooling system of the shaping mold and increase the cooling water on the side of the profile bearing tensile stress. 4. Adjust the method of mechanical offset center, that is, while producing, adjust the positioning bolt in the middle of the shaping mold, and make reverse micro adjustment according to the direction of profile bending (the method should be adopte
2022 / 07 / 30
Profile extrusion is a process by which various plastic materials are used to develop quality plastic products. These products have a continuous cross-section such as pipe, drinking straws, decorative molding, eavestroughing, window trimming and many others. The basic procedure of profile extrusion is that the polymer is melted into a hollow mold cavity, under the influence of high pressure.Process of Profile ExtrusionA wide range of special profile extrusion equipment are used to carry out this process effectively. In this process, first the plastic (pellet form) is fed into the machine hopper / extruder. Along with this, the material is constantly conveyed in the forward direction by the way of rotating screw which is placed inside the heated barrel that is being regularly softened by friction as well as heat.Then, the softened plastic is thrown out via a die, straight in the cool water that solidifies the product. From this point, it is conveyed to take-off rollers that actually pull the softened plastic from the die. The die is basically a metal plate which is placed at the extruders' end with a section that is cut out of its interior. This cutout along with the speed of take-off rollers are the two major factors that determine the final cross-section of manufactured product.
2022 / 07 / 30
With the advent of nanotechnology in the past few decades, the prospects of nano scale fillers in polymer-based composites in the flame retardancy applications have progressed rapidly. Although nanofillers do not show excellent fire retardance inherently, incorporation of low amount of them in polymer composites tend to provide drastic improvement in thermal stability, smoke release amount, peak heat release rate and the speed at which flames spread throughout the nanocomposites. The main mechanism of fire retardancy for nanocomposites, which happens in the condensed phase, depends on different factors including structure and chemical composition of the nanofiller. In general, the presence of nanofillers in polymer matrix can alter the overall response of nanocomposites during exposure to flame. A list of most commonly used nanofillers in nanocomposites with the aim of fire retardant is summarized in Table 2. TABLE 2. List of common nano flame retardants in polymer composites
2022 / 07 / 30
Zinc oxide (ZnO) is one of the most popular photocatalyst metallic compounds because of its advantages, such as, cost efficiency, numerous active sites, high surface reactivity, and low environmental impacts. In fact, it is listed as safe by the US Food and Drug Administration given that zinc is an essential trace element. ZnO particles have high thermal conductivity as well as great heat capacity. Therefore, incorporating them into polymeric compounds will result in absorbing the heat transmitted from the surroundings and retarding the direct thermal impact to the polymer backbone. In other terms, they act as an inhibitor to slow down the flame spread rate. With recent advancements in nanotechnology, nano-sized zinc oxides are among the emerging high-value inorganic products with significant features, (such as, high catalyst effect, effective antibacterial properties, high UV absorption, high thermal and physical stability, and high heat capacity) that have many applications in different industries, such as, cosmetics, plastics, sensors, and semiconductors. It is common to use high concentration of inorganic mineral fillers, such as, Al(OH)3 up to 20 wt% to modify flame retardancy of polyvinyl chloride (PVC). However, it is reported that the addition of only 0.635 wt% of ZnO and 9 wt% of Al(OH)3 combination into PVC can significantly increase the LOI value of PVC nanocomposite (up to 30%). This observation was more likely due to the formation of crosslinked surface modified ZnO in polymer matrix, which accelerate the nucleation process and improve the heterogeneous nucleating ability in the cr
2022 / 07 / 30
Nanoclays are ubiquitous nanofillers that are isolated from naturally occurring clays through energetic stirring, followed by centrifugation and freeze-drying, centrifugation and cross-flow filtration, or ultracentrifugation. Nanoclays are composed of stacked mineral silicates layers, forming complex clay crystallites. Three main mechanisms have been reported for fire retardancy in composite materials containing clay particles, including migration, barrier, and paramagnetic mechanisms. In the combustion process of the composites containing clay particles, the bubbles that are formed during polymer degradation push the clay nanoparticles from interior layers to the surface of the composites. The clay migration to the outer surface could be attributed to different factors; the difference in surface free energy between polymer and polymer-clay blend, the temperature and viscosity gradient during directional heating, and the formation of rising gasses during combustion process. The aggregation of clay particles results in more hydrophilicity (i.e. less compatible with common hydrophobic matrices) due to the degradation of the organic treatment on the clay interlayers. Consequently, a clay-rich barrier layer will form and reduce the rate of weight loss in the composite combustion. Barrier mechanism during the condensed phase suggests the formation of a char layer in composites containing clay particles while exposing to fire. The insulating char barrier prevents the mass transfer of degradation products to the combusting polymer surface. This, in turn, would limit further exposure to heat and oxyge
Plastic Extrusions: What Are They?
2022 / 07 / 30
Plastic extrusions, sometimes referred to as plastic profiles or sections, are used widely and across a range of sectors including construction, manufacturing, transport, retail and events. However little is known about what a plastic extrusion actually is or how it's made. In broad terms, extrusion implies a pushing out action. In this context it refers to the process of that is involved in creating the plastic tube, angle or edge trim through combining raw plastic with a die through a melting process in order to achieve the desired shape. What is the extrusion process? The process behind a plastic extrusion can be broken down into three steps. 1. Mixing 2. Melting and extrusion 3. Shaping and cooling Stage 1: Mixing The first step is to mix all raw ingredients for a plastic extrusion. Raw plastic, typically in the form of compound, is first fed into a long barrel-shaped extruder. At this stage, any additives for the plastic extrusion, such as colourants, can be added according to the required specifications. Stage 2: Melting and Extrusion The second step of plastic extrusion is to melt the ingredients together. Along the barrel there are heating zones strategically positioned to melt the plastic material gradually, reducing the risk of overheating and degrading the polymer. Further heat is then generated through friction from a rotating screw. The molten plastic emerges at the end of the barrel and is subject to filtration to ensure that no contaminants are present in the final product. After this the plastic extrusion will take its final shape (last stage) Stage 3: Shaping and Cooling The last step of plastic extrusion is shaping and cooling. The molten polymer is then forced into a die, which attributes the
PVC and uPVC - What's the Difference?
2022 / 07 / 30
Polyvinyl chloride or PVC plastic is one of the most used plastics in the world. It is incredibly versatile and found in an endless array of products that impact our everyday lives, and is suitable for recycling. PVC is particularly used for building and construction but also plays an important role in health, transport, packaging as well as art and fashion. Rigid and flexible PVC plastic PVC plastic comes in two main forms: rigid and flexible. To attribute it a flexible nature, plasticisers are added to PVC. In this way, the 'u' in 'uPVC' stands for unplasticised and uPVC plastic retains rigidity. Unplasticised polyvinyl chloride (uPVC plastic) Rigid uPVC is often used externally as it is more resistant to weathering and isn't susceptible to biological decomposition. In addition, it retains its shape at normal temperatures, though it can be reshaped under intense heat. It features prominently in construction, particularly in windows. However in the double-glazing and windows industries, additional stabilisers are often added to the uPVC, which are not used on our uPVC products. uPVC can also be used internally. For example, it provides a durable edge protection to boards, panels and other applications. Flexible polyvinyl chloride (flexible PVC plastic) On the other hand, flexible plasticised polyvinyl chloride is durable and used for a number of internal applications. Our flexible profiles are often used for domestic applications such as edge protection and cover strips for boards, panels, furniture and worktops amongst others.
2022 / 07 / 30
Profile ExtrusionTypical Raw Materials For Plastic Profiles:- HDPE (High Density Polyethylene)- LDPE (Low Density Polyethylene)- LLDPE (Linear Low Density Polyethylene)- PETG- Flexible PVC- Butyrate- Polypropylene- Polystyrene- ABSAdvantages And Disadvantages of Profile ExtrusionThe only main disadvantage of the profile extrusion is the limitations in the design possibilities, which is due to the linear nature of the process. It has various advantages as well that are as follows:- Equipment widely available in all geographical areas- Relatively low tooling costs- Inexpensive process- Product combinations possible- Design freedomTypical Applications & Design PossibilitiesThere are number of applications where the process of profile extrusion is extremely useful. Also, there are many design possibilities with the use of this process. Typical applications and design possibilities of the profile extrusion process are as follows:- Windows profile- Sealing sections- Modular drawer profiles- Decorative trim
Send Inquiry
Mr. Ron Han
Tel:86-536-8206760
Fax:86-536-8206750
Mobile Phone:+8615336365800
Email:manager.han@novistagroup.com
Address:RM1232-1233,#4 Building No.4778 Shengli East Street, Weifang, Shandong
Related Products List
Mobile Site
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.