Question 1

Polyreflex enhanced plastic corrugated sheet, honeycomb board and X-shaped board can be used outdoors without fading and brittle.

Accepted Answer

Outdoor used material --- plastic corrugated sheet, plastic honeycomb panel and X type twin wall hollow sheet. Outdoor used, that means the material must be UV resistance, and it is used for a long time and age-resistant under the weather of sunning and raining. But how to make UV resistance? Firstly, we have to know the local outdoor used conditions for PP hollow sheets. 1. Intensity of sunlight (annual average UV exposure, continuous data for at least 10 years) .2. Moisture and annual precipitation.3. The lowest temperature. Secondly, what is the service life of PP plastic hollow board? Generally speaking, PP hollow sheet is used for advertising, truck body, construction, and other areas, the life span depends on the conditions of outdoor used and product application.Under the condition of strong ultraviolet rays, heavy precipitation, humid and the lower temperature, the aging speed of PP hollow sheet will be faster. PP hollow sheet will lose its original properties by light, heat, moisture, and other factors. We did a two-years outdoor test on regular honeycomb panels and anti-ultraviolet honeycomb panels.  The sample on the left is the original sample, and the sample on the right has been exposed to sunlight and rain for 24 months.As for the UV-resistant sample, it has not changed much after two years of testing. However, the test results of ordinary samples are not so good. Therefore, to slow down the aging speed of PP hollow sheet, the production formula can be adjusted according to different applications, here are the details how Polyreflex do. * Adding few UV resistant or antioxidant material in product, can effectively improve the atmospheric aging resistance.* To maintain the color durability, it is necessary to add weather-resistant pigments to adjust the color of the color palette, such as iron oxide red, phthalocyanine blue, carbon black, phthalocyanine green, and titanium dioxide pigments, can improve its weather resistance.* Adding appropriate amount of titanium dioxide in PP hollow sheet, not only it will not affect the original properties of the sheet, but also it can improve the atmospheric aging resistance of PP hollow sheet.* Adding appropriate antimony stabilizer to replace lead salt stabilizer in PP hollow sheet, it can improve the impact toughness and atmospheric aging resistance. For Polyreflex lightweight plastic sheets, different product has different life spans:1. PP corrugated sheet can be used outdoors for 2 years.2. PP honeycomb panel and X type twin wall hollow sheet, standard products can be used outdoors for 3 years.If the service life of 2~3 years is not enough for your application, it can be adjusted by adding high-quality UV resistance enhancer for a service life that more than 5 years.Welcome to contact us for more information.

Question 2

Polypropylene corrugated sheet (coroplast sheet, correx sheet, corflute sheet) and PP honeycomb panel (triple wall board) have common advantages and application industries.

Accepted Answer

Both corrugated plastic sheet and polypropylene honeycomb guard are high technology hollow structure materials, with features such as lightweight, non-toxic, waterproof, anti-termite, vibration damping, anti-aging and corrosion resistant, etc. Comparison with other materials * Compared with cardboard products, fluted board and honeycomb board have the advantages of moisture-proof, waterproof, corrosion resistance, recycling, etc..* Compared with wood products, fluted sheet and honeycomb sheet have the advantages of moth-proof, moisture-proof, pollution-free and environmental protection, etc.* Compared with injection moulded products, corflute and cellular panels have the advantages of shock resistance, flexible design and no need to open injection moulds, etc. Performance enhancement lightweight board By adjusting formula or through chemical treatment of the surface, Polyreflex plastic corrugated sheets and pp honeycomb boards have excellent performance on properties such as easy printing, UV resistance, flame retardant,electrical conduction and anti-static.The surface resistivity of antistatic plate can be controlled between 106 and 1010 ohm/sq.The surface resistivity of conducting electrostatic plate can be controlled between 103 and 105 ohm/sq. If you are interested in our products, please feel free to contact us.

Question 3

Some precautions when using corona treated PP corrugated sheet.

Accepted Answer

1) Keep the pp corrugated sheet clean The corona-treated sheet has a strong adsorption force for dust. We recommend that the PP corrugated sheet used for printing should be wrapped by PE film and stored in a clean, dust-free warehouse. Check the following PP corrugated board wrapped by PE film. 2) Try not to paste a sticker on corona-treated panels Try not to paste a temporarily used sticker on the corona-treated PP corrugated sheets because it has a strong adsorption to the glue. The glue will penetrate into the surface of the sheet and is difficult to remove. 3) The best service life of corona-treated panels is six months After six months, the corona effect will diminish. Therefore, it is recommended to print and use polypropylene corrugated board within half a year to ensure the best results. Related Products Polypropylene corrugated sheet coroplast sheet / correx sheet / corflute sheet

Question 4

Corona treatment is an electric shock treatment that gives the surface of the substrate a stronger adhesion.

Accepted Answer

What is corona treatment? Corona treatment is an electric shock treatment that gives the surface of the substrate a stronger adhesion. Under what circumstances should the lightweight plastic sheet be treated with corona? Polypropylene is an inert material, the adsorption effect of ink is not good.For printing on Polypropylene meterials, such as PP corrugated sheet / coroplast sheet / correx sheet / corflute sheet, PP honeycomb panels, pp film, if you want the ink to absorb firmly and not easily fall off, corona treatment will be very helpful. How does corona treatment help the printing effect of the lightweight plastic sheet? Its principle is to use high frequency high voltage to corona discharge on its surface, to produce out low temperature plasma. The plasma  penetrate into the surface of the printed body by electric shocks to destroy its molecular structure, and further polarity and oxidate the board surface, so as to increase the adhesion ability of the board. How to judge whether the corona treatment is qualified? Dyne test pens (≥38 mN/m) can be used as a quick test tool for surface energy after corona treatment, but are not suitable for tests for printed or coated surfaces. If the test pen draws a continuous line on the corona treated surface, we can say the surface energy of the material is not less than 38 mN/m. If the line is intermittent, the surface energy of the material is less than 38mN/m, indicating it is insufficient or even untreated, and thus does not meet the printing requirements. What thickness of lightweight plastic sheet can be corona treated? The thickness of the sheets is usually 2-6mm.Generally speaking, the power required for corona treatment of thin sheets (2-6 mm) is small, but the power required for corona treatment of thick sheets (8-10 mm) is double more. If the power of the corona treatment machine is can be adjustable, then the machine can operate the corona treatment on either thick pp sheet or thin ones. Related Products Polypropylene corrugated sheet coroplast sheet / correx sheet / corflute sheet Polypropylene honeycomb panel PP bubble board

PP Corrugated Sheet