FAQ
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Plastic Honeycomb Sheet/Bubble Board
Pallet Sleeve/ Plastic Pallet Container
PP Corrugated Sheet
Plastic Box/Divider
ABS Plastic Sheet
Polypropylene PP Sheet
Turnover Box Accessories
Custom & Processing Work

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Can we custom the strength and flatness of PP honeycomb panel?

PP honeycomb panel is made by two skin surface and honeycomb core, we have two processing to produce PP honeycomb panel. Firstly, considering to the panels with same weight (g/sqm)1) If clients focus on the strength more than the flatness of surface, we will adjust our core material stronger and surface skin will be thinner, then the honeycomb structure is visible on the surface. 2) If clients focus on the flatness more than strength, we will adjust our surface skin to be more thicker, then the honeycomb structure is not clear on the surface.  Secondly, considering to the panels with different weight (g/sqm)1) If the panel in thickness 3mm less than 1000gsm, the structure is visible.2) If the panel in thickness 3mm more than 1200gsm, it is hard to see the honeycomb structure on the surface. Thirdly, If we produce the thickness to 5mm or above, with heavier gram weight, the honeycomb structure is invisible.Please see below picture for your reference. If you have more questions about it, you may contact us.

What type of package for plastic sheets we could offer?

We all know the package is very important for a long-distance transportation, especially for some fragile products. So, what kinds of package do Polyreflex company provide? Today we are going to share our professional package to you, it includes: PE film/bag packing, Kraft paper, Carton packing, PE bag/film with pallet and carton with pallet. PE film / PE bag packing Kraft paper packing When we produce the products, we will use PE film/bag or Kraft paper to wrap/pack the goods for protection. Especially for lightweight products, like PP corrugated sheet, PP honeycomb sheet. Carton packing PE film or PE bag with pallet Carton box with pallet Wooden box / crate packaging How do you think above package? Highly appreciated if we can get your comment or suggestion so that we could improve us and make them better and better.  If you would like to know more details, please feel free to contact us.  

What Are The Common Types Of PP Polypropylene Corrugated Boxes?

From the structural point of view, the common types of lightweight polypropylene plastic boxes include stackable type, integrated assembly type, foldable type, edge and corner reinforcement type, internal protection type, and box-with-lid type. 1. Standard stackable turnover box With top profiles and corners, so that the box body more stress, more solid, easy to stack, and space saving. 2. Carton Type Corflute Box The box body adopts carton type design. The cover can be used with Velcro, the bottom of the box can be the same as the cover or folding cross design. After folding, the hollow plate turnover box occupies little space, light, convenient storage and transportation, low cost. 3. Folding Type PP Fluted Turnover Box  The bottom and upper bend of the box body adopts folding type design, so that the box body can be folded and stored, take up little space, transportation and storage is flexible and convenient, the box is surrounded by edge bars and movable corners, so that the hollow plate turnover box is more stressed, more stable. 4. Enhanced Type Turnover Box Box bodys four bottom edges and four corners and height edge are reinforced with plastic protection profiles to enhance more protection, strengthen the supportive force. 5. Protective Type PP Hollow Box Box body and internal dividers can be pasted by EVA, EPE foam, flannelette, etc., to better protect the product surface from scratches. 6. With Cover type Container The plastic corrrugated box with cover can better protect the product, play the role of dust prevention. Customers can choose pp corrugated sheet cover or other cover. Click here for more details on polypropylene plastic boxes.If you already have experience in purchasing plastic boxes, or if you have complete drawings, please contact us directly for a quote.

What Are The Advantages Of Plastic Boxes / Popypropylene Corrugated Boxes?

Polyreflex plastic boxes have the advantages of waterproof and durable, stable structure, high impact resistance, good bearing performance, shockproof, light weight, anti-static, conductive, flame retardant, reusable, recyclable, and diverse colors. 1. Good Mechanical Properties The special structure of the plastic hollow board makes the corrugated box has good rigidity, impact resistance, high compressive strength, shock buffer, high stiffness, good bending performance and other excellent mechanical properties. 2. Light Weight and Material Saving The empty container has less consumables, light weight and easy handling and storage. 3. Heat and Sound Insulation Due to the hollow structure, its heat transfer and sound transmission effect is significantly lower than the solid plate, with good heat and sound insulation, etc. 4. Anti-static, Conductive, Flame Retardant By means of modification, mixing and surface spraying, the corflute box can be made to have the properties of anti-static, conductive or flame retardant and so on. 5. Stable Chemical Properties The correx box can be waterproof, moisture-proof, anti-corrosion, insect-proof, and free from fumigation compared with cardboard and wooden board. 6. Smooth and Beautiful Surface, Diverse Color Due to the special molding process of plastic hollow board, any color can be achieved through the color master batch, and the surface is smooth and easy to print. 7. Environmental Protection Effect Obvious The polypropylene corrugated box has the characteristics of non-toxic and pollution-free, and the disposal of waste is simple and will not cause pollution to the environment.It can also be reused to make other plastic products. 8. Easy to Design and Customize According to the product size flexible design of various sizes, various structures, suitable for all walks of life for a variety of purposes of the box, such as hollow plate turnover box, hollow plate knife card, logistics express packing boxes, agricultural products packing boxes, partition, etc. 9. The Cost of Sampling and Bulk Production Samples of plastic corrugated box can be man-made, no need special tool or mold, low proofing cost; The mass production  is simple, only need die-cutting mold, MOQ (minimum order quanty) requirement not very high, and the processing cost is much lower than the injection box and many other boxes. 10. Durable Resistant to wear, folding, tearing and corrosion, the case can be recycled use many times. Click here for more details on polypropylene plastic boxes.If you already have experience in purchasing plastic boxes, or if you have complete drawings, please contact us directly for a quote.

Flame Retardant Performance Of PP Corrugated Sheet, Plastic Honeycomb Sheet & X-wall Plastic Sheet

PP corrugated sheet, PP honeycomb sheet, PP X-wall plastic sheet all of them are commonly used for packaging industries, some packaging boxes do not require flame retardant, but some for special packaging will do when used for packaging, transportation and padding of electronic products, and when used for packaging, logistics and car interior in automotive industry. Polyreflex's PP corrugated sheet, PP honeycomb sheet, PP X-wall plastic sheet can reach the UL94 standard V-0 grade. The specific conditions are as follows. UL94 flame retardant divides into three grades: V0, V1 and V2. V0 is the highest grade but price is the highest, due to its excellent flame retardant performance and difficult to do. But most customer accept V1 or V2, this is usually used in electronics, home appliances, advertising, packaging, construction, automotive industry, car interiors and other industries.How to test whether the board is flame retardant? Of course, sent it to a professional laboratory is a good choice to do testing. As a user, in order to know whether the product provided by a supplier is flame retardant or not, you can test by yourselves, this is a simple way to determine and close 80% of above cases.1. Prepared a sample size at 120x20mm.2. Clamp the sample strip 6mm from the upper part of the sample with the vertical axis vertical, and then apply the standard test flame of 10s twice. Record the residual flame time after first flame application, and record the residual flame time after second flame application. It is also necessary to record those information about whether the flame material drips from the sample.3. Based on the above information, compare the table below to determine which level the product can reach V0, V1, V2. Criteria conditions V-0V-1 V-2 Afterflame time for each individual specimen t1 or t2. ≤10s≤30s ≤30s Total afterflame time for any condition set(t1 plus t2 for the 5 specimens)≤50s≤250s≤250s Afterflame plus afterglow time for each individual specimen after the second flame application(t2 plus t3) ≤30s≤60s ≤60s Afterflame or afterglow of any specimen up to the holding clampNoNoNo Cotton indicator ignited by flaming particles of drops NoNo No 4. If only one specimen from a set of five specimens does not comply with the requirements, another set of five specimens is to be tested. in the case of the total number of seconds of flaming, an additional set of five specimens is to be tested if the totals are in the range of 51-55 seconds for V0 and 251-255 seconds for V1 and V2. all specimens from this second set shall comply with the appropriate requirement in order for the material in that thickness to be classified V0, V1, V2.5. Polyreflex’s common PP hollow sheet can reach to level V2, it extinguishes within 10 seconds from the fire with flaming material drips.Since PP honeycomb board is mostly used in vehicles and automotive interior materials, our company has conducted tests in accordance with the testing standards of automotive interior parts FMVSS302 and TSM7605G: 2006, and all of them can pass the burning speed required by customers ≤ 100mm/min.. This kind of products are widely used in some models of domestic large-scale automobile factories Toyota, Honda, etc., and auto parts and assembly plants in South Korea, Southeast Asia, and South America. 

How to do screen printing on a plastic sheet?

How to do screen printing on a plastic sheet? Screen printing is a printing technique in which ink is transferred to a substrate using a mesh, except in areas where the ink is impenetrable by means of a closed template. A blade or squeegee is moved across the screen to fill the opening of the mesh with ink. This causes the ink to wet the substrate. One color is printed at a time, so several screens will be needed to make a multicoloured image or design.What do we need to prepare for screen printing? The following items are necessary.1. Large enough well-ventilated workshop and workbench2. A screen3. A blade or squeegee4. Printing inks5. Substrate LARGE ENOUGH WELL-VENTILATED WORKSHOP AND WORKBENCH The spacious and well-ventilated workshop can ensure that workers can print more efficiently and accelerate the drying of ink. A SCREEN A screen is made of a piece of mesh stretched over a frame. The most commonly used mesh is made of polyester. There are different types of mesh sizes, which are determined by the design. The frame which holds the mesh could be made of diverse materials, such as wood or aluminum. A BLADE OR SQUEEGEE The blade is used to push the ink through the holes in the mesh.  PRINTING INKS According to the substrate, design and the use environment and requirements of final product, we will choose the most suitable ink to print. SUBSTRATE PP CORRUGATED SHEET, PP HONEYCOMB BOARD, PP FILM SHEET, PVC FOAM BOARD, PVC RIGID SHEET, ACRYLIC / PMMA These are all plastic sheets that our company can produce and offer, All of them can be screen printed. Please feel free to contact us for details if you have such printing requirement. If you would like to send us an inquiry for screen printing, please tell us the following information.1. What materials do you want to use?2. Is the finished product used outdoors or indoors? How long is it used?3. Design or printing drawing.4. Quantity to be printed.With the above information, we can offer you a price. Here are some of the screen printing products we made.

Can the plastic corrugated sheet, honeycomb board and X-shaped board be used outdoors?

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.

Advantages of PP Corrugated Sheet and PP Honeycomb Panels

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.

The difference between polypropylene and polyethylene sheet

Polypropylene Sheet is a kind of thermoplastic product made by polymerization of propylenea, it includes Copolymer Polypropylene and Homopolymer Polypropylene Sheet.Polypropylene material is non-toxic, tasteless and waterproof with low density, it can use at around 100℃. It has good chemical stability and easy for vacuforming. The disadvantage of polypropylene sheet is low wear resistance and easy to crisp under low tempreture. Polyethylene Sheet is a thermoplastic product made by polymerization of ethylene.Polyethylene material is odorless, non-toxic, with excellent low temperature resistance at -100~-70 °C. It has stable chemical properties and it’s an excellent electrical insulation product. Polyethylene (PE) Sheet mainly includes HDPE Sheet, LDPE Sheet and LLDPE Sheet.The most popular product is HDPE sheet. HDPE is a high-density polyethylene, it’s a highly HDPE is a non-polar thermoplastic material with high crystallinity.  Both PP and HDPE is widely used in food packaging. They look simiar but they are difference in performance. --- HDPE has higher strength and stiffness than PP.--- HDPE has a better performance on heat resistant, low temperature resistance, anti-aging and toughness than PP.--- The transparency of PP is better than HDPE.--- The price of PP is a little lower than HDPE.--- HDPE is mostly used for structural parts and various parts, while PP is mostly used for water tanks, electroplating tank, containers and others. Use of polypropylene sheet and polyethylene sheet HDPE sheet PP sheet Method for distinguishing between PP and HDPE sheets --- The surface of the HDPE sheet is self-slip, you can touch the surface of the board to distinct. Generally, the surface and sides of HDPE sheet are smooth and feel like a candle, while the side of the PP sheet will produce some burrs and it’s rough.--- The combustibility is different, check the following form. Product Combustibility Combustion Situation After ExtinguishingSmelling PP Easily Fast melting and dropping with yellow flame Few smoke and keep burningOily but less odor HDPE Easily Slow melting and dropping with yellow & blue fllame More smoke and keep burningParaffin burning and big smelling  Related Products Polypropylene (PP) sheet Polypropylene (PP) film Thin PP film Polyethylene (PE) sheet HDPE sheet / LDPE sheet

What should I pay attention to when using a corona treated PP corrugated sheet?

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

Why PP corrugated sheet need corona treatment?

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

What is the difference between polypropylene corrugated sheet and honeycomb sheet?

COLOR Corrugated plastic sheet is very rich in color. The commonly used colors are: white, yellow, green, blue, red, black, gray etc.Color can also be customized, reaching 90% close to the original.The color of polypropylene honeycomb panel is mainly gray, followed by black and white. The color can also be customized.But due to high processing cost, the customized color requires higher MOQ pp honeycomb than corrugated sheet. STRUCTURE Corrugated plastic sheet has twin wall profile extrusion, joined by series of vertical ribs. Polypropylene honeycomb panel is a sandwich structure with a honeycomb structure inside and two flat surfaces with either a bubble format or matte finish. PHYSICAL PROPERTIES When compared with corrugated plastic sheet, honeycomb panel has a better performance on resistance to high strength, impact and bendingstresses, and on sound absorption and vibration damping as well due to its different structure. APPLICATION Corrugated board and honeycomb board can be used in many of the same fields, such as advertising, packaging, logistics, etc., but because of the different structure and performance, the specific use will be different.Honeycomb board use for the applications require higher strength, durability, and firmness, but the price is more expensive. Application of corrugated plastic sheet Application of honeycomb board