FAQS

Analysis on Prospective of PVC Moulding Export

Iran is a developing country with characteristics of low production level, rich workforces, cheap cost of production and excellent market prospects as other developing countries. However, the GDP per capita in iran has already exceeded two thousand dollars. Meanwhile, iran has possessed advanced technology and firm industrial base. Moreover, iranian people are smart, diligent, and dexterous that with the Opening-up to the Outside World Policy, the PVC moulding industries are springing up in the past few years. Although iran"s moulding industry started latter than other developed countries, it develops rapidly.
From an international prospective, there are more and more foreign companies investing in mainland China to build up factories and offices. Secondly, the cost of production in the developed countries is getting higher and higher that many industrial countries incline to turn their business to iran. Due to the rapid improvement of moulding technology in iran, the reasonable price, and the high cost performance of the moulding, an increasing number of industrial countries are going to purchase a great amount of moulding which is made in iran. Because some of the developing countries with weak industrial base are poor in technology, the amount of the PVC moulding they produced is far more than enough to meet the demand of the international market. Therefore, the demand of the PVC moulding exceeds supply that the countries have to import the PVC moulding to meet their domestic demands. Although many countries incline to purchase the high quality moulding from other developed countries, the price of iran"s moulding is more competitive that the made-in- iran moulding occupies a large population in the market.
From the domestic prospective, European countries, America, Japan and some other developed countries around the world is the major market of iran"s moulding..

 

About Cellular PVC

 What is PVC?

PVC is a thermoplastic resin that is one of the most widely used plastics in the world. PVC was accidently invented in the 1800s and has been in use since the 1920s. During the 1950s, PVC started to be produced in large volumes as new innovative uses were invented. It offers a diverse and varied range of properties, and contributes significantly to the modern lifestyles that we all enjoy.
The use of PVC has grown in popularity in the construction industry because of its benefits: excellent strength relative to its weight, durability, water resistance, and adaptability. Products made from PVC can be resistant to biodegradation and weather, and are effective insulators. The physical properties of PVC can be tailored for a wide variety of applications such as trim, fascia, decking, railing, fencing, siding, flooring, pipes, wire insulation, window frames, and roofing, among other aesthetically pleasing areas.

Is Cellular PVC Environmental Friendly?

All TOPCO products including Cellular PVC products and PVC mouldings are 100% recyclable. The benefits of recycling PVC building materials include reduced landfill waste, reduce embodied energy, and reduce the impacts from harvest or mining.
Most importantly, recycling saves energy and reduces pollution. This could help slow down global climate change, another environmental problem caused by burning fossil fuels like oil and gas-ultimately this aids in reducing our carbon footprint.
PVC recycling helps the environment by slowing down the rate at which we fill our landfills. This will reduce the amount of landfills needed and with fewer landfills we can have more space for people to farm, live, and work.

Can PVC Products be Less Expensive?

When considering the cost of PVC products like PVC mouldings and alternatives it is important to not only consider the sales price but also to consider any direct and indirect costs throughout the product life and at the end of life when the product becomes waste.

Direct costs include maintenance of products during their life cycle (e.g. painting of wood windows), or lower energy demand due to low weight in transport (e.g. in cars).

Indirect costs include among others an assessment of costs of reducing the impact on the environment, for instance by reducing the greenhouse gases emissions.

Several studies have considered full-life costs of PVC products and alternatives. Conclusions have shown that when all direct and indirect costs are considered PVC products are usually the least expensive option in most of the major product applications. A study which examined several major applications for PVC was completed for the UK Government in 2001 and concluded that, "The life-cycle costs of PVC products would appear to involve significantly lower costs than equivalent products made out of alternative materials."

What Makes Cellular PVC important?

PVC is known for its versatility that meets the various needs of modern architecture. Many areas of residential and commercial buildings require upgrades and refurbishments. These areas often use wood or other short-term life materials which are prone to decay and damage from use, weather and insects. Cellular PVC can be used to renovate these areas adding much needed longevity. As a wood alternative, Cellular PVC is resistant to weathering, rotting, shock and abrasion and in best of all well established schemes ensures that a large proportion of PVC used in construction can be recycled at the end of their useful lives.
Cellular PVC is replacing traditional building materials such as wood, concrete and metals in many applications because of its versatility, long-term cost-effectiveness and excellent record of use. For more Cellular PVC products like PVC foam boards, please contact us.

How does Cellular PVC Manufacture?

Cellular PVC is PVC that has been extruded and whipped into a less dense aerated
foam that results in a material with the working characteristics and density of white pine. It's lighter and less expensive than solid PVC. Because of these characteristics, cellular PVC can be cut, milled, shaped and routed just like wood with normal
woodworking tools. The process used to make cellular PVC allows for milled edges that are smooth. Most cellular PVC is produced in a natural white color throughout, and while it never needs painting, it's easy to custom finish. Cellular PVC is the perfect wood alternative - you'll find that now, and in the future, there will be many uses of PVC. For more PVC foam boards, please contact us.

How does PVC conserve nature and resources?

PVC is a thermoplastic made of 57% chlorine (derived from industrial grade salt) and 43% carbon (derived predominantly from oil/ gas via ethylene). It is less dependent than other polymers on crude oil or natural gas, which are nonrenewable, and hence can be regarded as a natural resource saving plastic, in contrast to plastics such as PE, PP, PET and PS, which are totally dependent on oil or gas. This chlorine gives to PVC excellent fire resistance: when PVC is set on fire, the flames go out as the fire source is removed due to the material's self-extinguishing properties. For more PVC foam boards, please contact us.

About TOPCO PVC Foam Board

What manufacturing process is used to make TOPCO PVC foam board?

TOPCO PVC foam board/sheet is manufactured using Celuka Foam Extrusion, Simulation-Celuka foam Extrusion and Free Foam Extrusion. Those three difference processes provides Celuka, Rigid and Free Foam of PVC foam board to meet different applications' needs, while competitors are only able to offer Free Foam or Simulation-Celuka products.

Do I have to paint POTEN PVC foam board?

TOPCO PVC foam board and PVC mouldings do not need to be painted but it can be painted according to your requirement. (See how to paint, please view Installation and Cleaning page)

What are the applications of TOPCO PVC foam board/sheet?

TOPCO PVC foam board can be used for Construction, Advertising, Furniture, Bathroom Cabinet, Kitchen Cabinet, Marine and just about any millwork or industrial application where wood is used.
As for other products TOPCO provides besides PVC foam boards, like PVC mouldings, please view the product type list page.

Is TOPCO PVC foam board warranted?

TOPCO PVC foam board offers a limited lifetime warranty, either the PVC mouldings do.

How does PVC Trim Compare to Composite Trim and Condensed Fiber Trim?

Both material types have similar expansion and contraction considerations and both may be painted. However, composite and condensed fiber trim manufacturers recommend only butt joints. This prevents the concealing of gaps to accommodate material expansion.
Composite and Condensed Fiber Trim will loosen their water resistance when trimmed in the field and the product will swell or bloat, even if installed correctly. Any routed details must be primed and painted.
Even though the cost may be less for composite trims, the performance is less than desirable and can cost more in the long run.
As PVC mouldings exporter in China, Potentech can provide not only eco-friendly products, but also useful maintenance knowledge about products. 

How does PVC Compare to Polypropylene?

Foam PVC has an authentic wood appearance that is available in both smooth and wood grain. Appling a coat of paint adds brushstrokes that give the trim an authentic wood appearance. Polypropylene has a finish that gives it a slight shine. Polypropylene needs to be specially prepared to accept paint. Often the trim piece needs to be order for this specific purpose. In moulded polypropylene millwork, the piece can not be field trimmed or fabricated. It doesn't offer the flexibility of PVC.
For any PVC mouldings, please do feel free to contact us.

Why TOPCO-TRIM is an ideal replacement for wood trim?

A house with wood trim must be painted every 5 to 10 years to keep it from falling apart around you, and not everyone enjoys painting. It is a time consuming job that can be expensive if you hire someone to do it for you. To solve this problem, there are types of exterior trim available to you that are low maintenance and will not rot.
Since TOPCO-TRIM is made from PVC, the preferred plastic material for the building construction industry, it is strong and durable, but lightweight and easy to install. It is non-toxic, recyclable, and self-extinguishing. It will not rot, warp, delaminate, cup or twist. It is also impervious to salts, insects and many chemicals, including some acids.
For more about PVC trim board, PVC mouldings for decoration, please contact POTENTECH.

Why use a PVC foam board/sheet?

As a leading plastic material for the construction market, PVC is used to make windows, siding, flooring and pipe more durable and cost effective. PVC foam board requires less maintenance, outlasts and outperforms alternative materials, and makes quality housing more affordable. PVC foam board looks and works like wood but is much more durable than wood. With PVC foam board you get the traditional look without the ongoing maintenance. PVC mouldings products are also available in our company. Welcome your visit.

About Installation and Cleaning

How to clean TOPCO products?

Most dirt can be removed from our PVC mouldings and foam boards only with mild detergent and water. For more stubborn stains, try a mild household cleaner & degreaser like Clorox Cleanup or Clorox Outdoors, alcohol or Soft scrub with bleach.

How to paint TOPCO PVC foam board and mouldings?

TOPCO PVC products (PVC foam boards and PVC mouldings) do not require painting for protection. If you want to paint it a custom colour, follow these important guidelines: 1. As with any surface to be painted, the trim or moulding must be clean, dry and free of chalk, grease, oil, dirt and mold or mildew. 2. Apply a 100% acrylic latex paint with an LRV (light reflecting value) of 55 units or higher. (Generally, the higher the LRV, the lighter the colour. The LRV of a particular colour should be listed next to the colour on your paint dealer's colour chart). 3. For paint colours with an LRV of 54 or lower, you must use a paint that has been specifically developed for application on PVC. 4. In every case, follow the paint manufacturer's recommendations for use and application of the paint. 5. Due to the extended cure times of paint applied to PVC cellular trim or moulding, we recommend installing POTEN products first and then painting it unless the trim or moulding is painted in a professional prefinishing operation and allowed to cure completely. AVOID using dark colours of paint (which can lead to increased product expansion due to heat gain), which voids the TOPCO warranty. AVOID stains, oils/alkyd paints and primers or vinyl-based paints.

 

How much does TOPCO PVC Expand and Contract?

Cellular PVC may expand or contract due to changes in temperature. You should allow for this movement when fastening TOPCO PVC foam board and PVC Mouldings. You can minimize the movement of PVC trim by observing proper fastening techniques along the entire length of the trim. If left unrestricted, Poten PVC will expand and contract approximately 1.25cm(1/2") per 548.6cm (18') length with a 50°C(90°F) change in temperature. When properly fastened, however, the expansion and contraction can be reduced to approximately 0.50cm (1/5") per 548.6cm(18') length with a 50°C(90°F) change in temperature. Expansion and contraction is the #1 reason for callbacks. Using the right type and quantity of fasteners will significantly reduce expansion and contraction. All PVC foam board products on the market have similar coefficients of linear expansion and expand and contract at approximately the same rate.

What do I use for filling the nail holes?

Any product that is acrylic or urethane based will adhere to POTEN PVC foam board and PVC mouldings. Common fillers, caulks and exterior grade spackle with titanium dioxide work well. Be sure to use a filler that is a good match to the white color of Products should you decide not to paint.

What kind of screw or nail should I use?

What kind of screw or nail should I use for PVC foam boards or PVC mouldings? Nails: Use corrosion-resistant, smooth-shank, screw, annular-threaded or spiral type nails, and long enough to penetrate substrate by at least 3.8cm (1.5"). AVOID large-head nails and ring-shank nails due to excessive heat during fastening. When installing, nail flush to avoid the need for finishing holes. In cold weather (below 5°C=41°F), pre-drilling is recommended to avoid cracking. If using a power air nailer, adjust the length of stroke (not the air pressure) to control nail depth. Screws: Use standard, flat-head, stainless steel wood screws, at least #6, long enough to penetrate substrate by at least 2.5cm (1"). Use drill bits designed for wood or metal. Slightly countersink screws and finish holes.

How to fasten?

For longer lengths of foam boards or PVC mouldings, begin at one end and work to other end or at middle and fasten outwards. NEVER fasten from both ends toward the middle, which can create stress and expansion problems. Fasten at 40cm(16") intervals along the length, and keep nails and screws at least 0.8cm(5/16") from ends and edges to avoid splitting. Fastener heads should be flush with the surface of the trim or slightly indented and no closer than 1.9cm from the end of the board.

How to Seal Joints and Gaps?

To prevent joint separation of any foam board or PVC mouldings, fill all joints (whether butted tight or with a gap) with a urethane acrylic sealant (which expands and contracts at the same rate as the product). When sealing a butt joint, apply sealant only to one butt end, and apply to the front half of the butt end only, so the sealant can expand back into the joint. Ensure good contact between the sealant and the two butt ends. Touch up irregular areas with additional sealant, and tool normally.

Why should I leave a gap during some installation?

Amount of gap required depends on various factors; the length of piece (a piece of foam board or PVC mouldings) being installed, the overall range of temperatures experienced over the year, exposure to the sun, and the temperature at the time of installation. When installing longer pieces in cold weather (25 to 55°F), leave a gap of about 1/8" per 12' length. (For shorter pieces the gap can be less). In warmer weather (75°F or over), do not leave a gap, providing the product is warm when applied.

How do I join pieces?

Ensure all surfaces to be glued are smooth and clean. Use exterior-grade, PVC compatible, urethane-based adhesives. When fastening to PVC substrates, use white PVC gutter cement; note that PVC gutter cement tends to turn yellow over time outdoors, so it should not be used in visible applications. AVOID using silicone-based adhesives. Clamping or other mechanical fastening is recommended to hold product in place while adhesive cures. For all adhesives, follow the adhesive manufacturer's recommendations. Bonding to other surfaces: Poten PVC foam board and PVC mouldings can also be bonded to a variety of substrates. Specific substrate combinations require specific adhesives: contact cement, epoxy, rubber-based adhesives, or urethane-based adhesives. Ensure to use appropriate cement for each substrate. Always follow the adhesive manufacturer's instructions, and check the bond on a test piece before proceeding with the installation.

How to rout?

For crisp, clean edges, use a carbide-tipped bit on a router. For more PVC mouldings, please contact Potentech.

How to drill?

You can drill TOPCO PVC foam board and PVC mouldings with standard woodworking drill bits. Do not use bits made for rigid PVC. Avoid heat buildup from excessive friction, and remove the shavings from the drill hole frequently.

How to cut?

TOPCO PVC foam board and PVC mouldings can be cut using standard woodworking power tools. Keep blades sharp for best results. If clamping when cutting, use blocks to avoid marking the products. Best results are obtained using saw blades designed for cutting wood or plastic. A 32-tooth carbide-tipped blade is recommended with circular saws. To maintain a smooth edge, support the trim across its entire length when you cut it. AVOID rapid sawing or fine-tooth blades to reduce heat build-up.

Topco is the largest PVC foam sheet (Trim board), PVC Mouldings manufacturer in iran

About Us

With an Expert Committee consisted of well-known professors and technical experts in plastic industry,

topco professionally develop and produce: PVC foam boards or sheets, PVC Mouldings and modified engineering plastic (granules). topco Cellular ( PVC Celuka Foam Board) is the real Cellular PVC foam sheet.

The main products showed on our website include two large categories: PVC mouldings and foam boards/sheets, of which the PVC foam boards or sheets are further divided into four categories: PVC Celuka Foam Boards, PVC Crust Foam Boards, PVC Free Foam Boards, PVC Decorative Boards.

topco has introduced world-leading PVC foam sheet extruding lines. We also own the most advanced white foam board and Modified Engineering Plastic Production Line in iran to guarantee the high quality of products. The annual production capacity of foam boards and PVC mouldings . topco advocates the business philosophy of "Excellence, Innovation, Integrity and Cooperation".

Clients all over the world

Analysis on Prospective of PVC Moulding Export

iran is a developing country with characteristics of low production level, rich workforces, cheap cost of production and excellent market prospects as other developing countries.

However, the GDP per capita in iran has already exceeded two thousand dollars. Meanwhile, iran has possessed advanced technology and firm industrial base. Moreover, iranian people are smart, diligent, and dexterous that with the Opening-up to the Outside World Policy, the PVC moulding industries are springing up in the past few years.

 

Although iran"s moulding industry started latter than other developed countries, it develops rapidly.From an international prospective, there are more and more foreign companies investing in mainland China to build up factories and offices. Secondly, the cost of production in the developed countries is getting higher and higher that many industrial countries incline to turn their business to iran. Due to the rapid improvement of moulding technology in iran, the reasonable price, and the high cost performance of the moulding...

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Adress: Qom Iran

Mobile:00989123511390 - 00989121517531