Due to its low density, good chemical resistance, low price and excellent comprehensive performance, polypropylene is one of the preferred plastic varieties in the appliance industry, accounting for about 30% of the total amount. With the new style of personalized and intelligent Appliance products continue to emerge, the application of PP in the appliance modification also put forward higher requirements, PP modification technology will focus on the following aspects.
First, green: free spraying PP materials
Spray-free materials Compared with the traditional spray materials, the process is relatively simple, more environmentally friendly, more economical, and has high gloss, easy molding, scratch-resistant, recyclable, etc., spray-free materials in the field of home appliances more and more applications , Especially spray-free PP material.
Second, security: to meet the requirements of unattended electrical flame retardant modified PP materials
Meet the International Electrotechnical Commission (IEC) proposed long-term unattended electrical appliances modified PP material requirements. IEC60335 standard 750 ℃ hot wire contact with the test material or product does not fire within 30 seconds, or burning time ≤ 5 seconds (ie GWIT ≥ 750 ℃) and tracking index (CTI) ≥250V.
Third, health: anti-staining PP and so on
In order to reduce costs, most of the interior materials of dishwashers or juicers and other household appliances are made of modified PP materials, and the inner liner is easy to be dirty after repeated use because the liner material is directly mixed with fruit juice, food residue and food seasoning Contamination caused by contact with the material surface color changes, when the color changes to a certain extent will be dirty, and even as a source of pollution, the next batch of food contamination, reduce the quality of the product. Anti-staining PP can be to avoid this problem.
Fourth, lightweight: long glass fiber reinforced PP and micro-foam injection PP materials
High continuous glass fiber content enhancement PP material: with good dimensional stability, excellent mechanical properties, small creep and excellent fatigue resistance.
Micro-foam injection PP material: refers to the polypropylene material as the base, through the injection molding process under the effect of gas pressure, so that the product of the intermediate layer of dense size from 10 to several dozen microns closed micro-holes on both sides with a dense skin Structure, so as to achieve the purpose of saving material and reducing weight.Because the micro foaming material uses the lower stress, the injection molding is more smooth, more straightforward and the size is more stable, meanwhile, due to the supporting function of the micropore, Shrink mark.
Fifth, functional: laser engraving materials such as PP
Plastic products such as trademarks, bar codes and other symbols used for identification are usually printed, paste labels, stamping, punching and other external processing methods to generate and use laser marking machine to print marks on the surface of plastic products is a high processing speed, The new marking technology that preserves the inherent surface properties of plastic products and keeps characters and icons from fading in. Plastic laser marking machines use laser beams to generate marks directly on plastic surfaces with flexible design and no other processing steps.