2020澳门历史开奖记录

  

滾塑工藝

滾塑的發展

DEVELOPMENT OF ROTOMOULDING

滾塑是一種成型中空塑料成品的工藝辦法,也稱扭轉成型或扭轉模子。將塑料粉末參加模具中,然後加熱模具並使之沿兩互相垂直的軸銜接扭轉,模具內樹脂在重力和熱量的感化下逐步平均地塗面、熔融黏附于模具內外面上,構成所須要的外形。然後冷卻模具,脫模獲得成品。滾塑工藝相對塑料成型常常采取的擠出、注塑和吹塑等工藝而言,具有設備和模具投資少、合適于大中型或外形龐雜塑料成品的臨盆、産品簡直無內應力等長處。

Rotomoulding is the technique for producing hollow plastic products.The first step is to put plastic powder into molders,then heat the molder to make the powder revolve around two vertical axes.The resin within the molder starts to pave the surface evenly due to the weight and heat followed by meltingon the inner surfface of molder.the second step is to cool down the molders and remove from the molder to get the products. Compared with what the plastic forming always take such as extrusion,injection,and blowing,the rotomoulding enjoys the advantage of small investment,excellent application for medium-and-super sized plastic products in complicated structures,and no stress,etc.

滾塑模具

ROTATIONAL MOLDING

滾塑原料

RAW MATERIALS OF ROTOMOULDING

線性低密度聚乙烯(LLDPE)是最幻想的滾塑原料。LLDPE 是乙烯與丁烯、乙烯等的共聚物,份子呈線型構造,密度爲0.93g/cm3。LLDPE用于滾塑的長處在于活動性好、熱穩固性好、耐情況應力開裂性好、抗沖擊機能好、剛性好。

LLDPE(Low Linear Density Polyethylene)is the ideal raw materials for rotomoulding.LLDPE is the copolymer of polythene,butylenes and so on with the linear molecule and the density of 0.93g/cm3.The advantage of LLDPE is it is better in liquidity,thermal stabilization and ESCR<impact, and hardness.

滾塑所采取的原料普通均爲出口,我們采取樂天、美孚爲主。除經常使用的色彩本身配色外,其他最好采取專門色料供給商的原料,如馬來西亞 ICO及桃園聚隆等,能分配耐強紫外線、抗強氧化性、乃至阻燃等公用料。

Rotational molding of raw materials used in general are imported, we use Le Tian, Mobil. Besides the common color your own color, the best use special pigment suppliers of raw materials, such as the Malaysia ICO and Nanjing Julong, special material blending resistant to ultraviolet, anti oxidation, and flame retardant.

2020澳门历史开奖记录