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Adding nucleating agent (transparent agent) toلفة ورقة PP is an effective way to improve the transparency ofلفة ورقة PPand its products.After the nucleating agent is added, a large number of fine crystals will be produced in the production ofلفة ورقة PP, which will reduce or even avoid the production of large spherulites. The reduction or elimination of large spherulites will obviously improve the transparency ofورقة PP. At the same time, due to the action of nucleating agent, the formation of a large number of fine crystals, so that the cleanliness ofورقة PP.The rigidity ofورقة PPwas improved while the transparency ofورقة PP لفافةwas improved.
C. Improve the heat resistance and rigidity ofلفة ورقة PP
The heat resistance and rigidity of PP sheet can be improved obviously by means of filling modification.The most widely used fillers are talc powder, calcium carbonate, etc.By adding 30% ~ 40% talc powder, the rigidity ofلفة ورقة PPcan be improved obviously, and the temperature can be raised to over 140℃. Meanwhile, the excellent sanitary performance and better oil resistance of pure PP sheet can be maintained, and the price is relatively low.Its molding products can be used for microwave heating.
According to the requirements of لفة ورقة PPto the forming conditions, the Angle of mold release: punch 2 o ~ 3 o(5 o optimally), die 1o ~ 3 o(5 o optimally);Molding temperature: sheet temperature 150 ~ 180℃, mold temperature 70℃ ~ 90℃;Molding shrinkage: punch 0.02 ~ 0.03mm/mm, die 0.03 ~ 0.04mm /mm.BecausePP sheet material sheetmaterial has the characteristics of abundant material source, low price, non-toxic, tasteless, good transparency, high mechanical strength, soورقة PPmaterial sheet material for vacuum molding processing, made of various packaging products are widely used in food, medicine, mechanical parts, daily necessities and other packaging.At present, PP packaging products appear on the market, in addition to simple lunch box, water, spoon, bowl, pickles box, a variety of local special products packaging box, yogurt pot, tray, etc. Also widely into the market.PP sheet products can be heated in microwave oven and sterilized at 125℃, so it is widely used in ready-to-eat food packaging.In addition, PP sheet vacuum blister molding products have been gradually applied in agricultural production in recent years, such as seedling tray, breeding cup, etc.
In the vacuum blister molding process, the best molding performance of modified لفة ورقة PP with (20% ~ 30%) low density polyethylene (PE) is obtained.
The bonding problem is the same as PE, which can be bonded after pretreatment.Welding with heating plate and friction welding was very successful.
Post-processing: when stamping by punching die and trimming die, the cutting gap needs 5mm, the material temperature is too high, the cutting burr. There should be corresponding measures to keep the minimum deformation amount during sealing. The heat sealing with coating layer, the temperature is 150 ~ 180℃, and the sealing time is 1s.
| غرض | صفقة PP polypropylene لفة | ||
| لون | أي لون | طلب | التغليف الكهربائي عبوات الغذاء التجميلية&الهدايا. |
| عرض | 300 ~ 900mm | شهادة | SGS ، Rohs |
| سماكة | 0.3 ~ 2mm | ضمان | سنتان |
| فئة | الطباعة مُجَمَّع درجة الغذاء نظافة عالية موصلة بوليمر مكافحة أنيستاتيكي دائم شائع مضاد للحيوان. ، إلخ. |
لون البضائع النهائية | غير لامع/لامع شفاف الألوان المشتركة. |
| مقاومة | 10^3 ~ 10^8O | مو | 1 طن متري |
| التصفيح | ON ، CPP ، OPS ، إلخ. | سعر | بناءً على مواصفات مفصلة |
| التغليف | البليت | ميناء | شنغهاي |
تابعنا
معلومات الاتصال:
رقم 32 طريق لوبين، منطقة لاكي الصناعية، شنغهاي، شنغهاي، الصين هاتف:0086-15221762039 بريد إلكتروني:[email protected]انقر للدردشة على الواتساب
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