PVC Foamed Slat

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The technical description of our foam slat:
1. MATERIAL: PVC material for 2” foam slat, valance, and bottom rail is used by Nan Ya Plastics Corporation which is largest plastic company in the world. Its quality is better than other PVC companies, so the price is higher than other PVC companies. The following illustration is 100% PVC powder has how many percentage of stone powder (calcium carbonate powder).
Raw Material Rate Nan Ya Plastics Corporation other PVC companies
PVC powder 90% 50-30%
Stone powder 10% 50-70%
The price of stone powder is about USD$0.5 per kg.
The price of PVC powder is about USD$2 per kg.


The stone powder is calcium carbonate, plastic is very soft so people will add some stone powder to increase hardness. However, some people will add too much stone powder in the PVC slat because stone powder is very cheap and manufacturer can reduce the cost, but too much stone powder will be easily embrittlement, and also the powder will run out on the surface of PVC slat when people use for a while.


2. PRODUCTION: the process of making foamed slat/blind is using two twin screws extruders to make slats together ( that called CO-EXTRUSION ). The color inside is as same as the color outside, so it looks natural like a wood. The advantage is we can add special material in another extruder to make our slat have additional functions. To let our slat is better than general slats ( which usually made by single screw extruder ). Even if to scrape the surface of slats by your fingernail, it does not easy to have a mark. Plus, we special manufacture on the surface of our slat/blind system, it can keep clear automatically. Even we process our slat by special water to prevent dirty stuff adhered.

3. QUALITY: Usually, manufacturers only use one extruder to produce PVC slats because of the cost down. We use second extruder to cover the PVC slat because we can add special material to resist UV, so our slat can prevent discoloration, bowing, deformation and increasing surface hardness. Also, our special water to prevent the dirty stuff to adhere on the surface of PVC slat. You can see our pictures as follow; the centre extruder produces PVC slat, and we have one more extruder on the left to cover.
Test Item SINGLE EXTRUCSION CO-EXTRUCSION
To resist UV NO YES
To prevent discoloration NO YES
To prevent bowing NO YES
To prevent deformation NO YES
To increase the surface hardness for foam PVC NO YES
To prevent dirty stuff adhered NO YES