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/ 不同的纸浆模塑生产原料,到底有什么区别呢?
不同的纸浆模塑生产原料,到底有什么区别呢?
华工环源
2022-12-03
纸浆模塑制品作为一种新兴的环保型绿色产品,从原材料、生产工艺到最后的废弃物的处理方式可循环再生利用。纸浆模塑的生产工艺目前主要有 2 种 :
一是湿压工艺
;
二是常见的传统工艺 (即干压工艺 )
。
生产一次性餐具用品和高档工业包装制品所采用的原料一般为甘蔗渣浆、竹浆、麦秆浆、稻草浆、芦苇浆等纸浆。那么不同的浆料之间有什么区别呢?下面一起来看看。
纸浆模塑原料之1:蔗渣浆
蔗渣浆是很好的纸浆模塑制品的原料。生产
纸浆模塑餐盒餐具
类产品多使用甘蔗渣纤维。
蔗渣浆是以甘蔗渣为原料,经过化学或生物制浆,制成甘蔗渣浆。甘蔗渣纤维是中长纤维,具有强度适中、韧性适中的优点,目前来说是最合适纸浆模塑制品的原料,因此甘蔗渣浆制品是目前适用范围最为广泛的。目前餐盒
餐具
类产品多使用甘蔗渣纤维,还有一些高端的手机托、化妆品包装也有用这个原料。
蔗渣浆的产地遍布世界各地,东南亚如泰国,美洲如哥伦比亚、墨西哥、巴西,中东如伊朗,中国的广西、云南等地。这些地区大量种植甘蔗,有很多蔗糖工厂,甘蔗是蔗糖厂的原料,而蔗渣本来是蔗糖工厂的废弃物,但许多蔗糖工厂都建立了蔗渣浆厂采用蔗渣制造纸浆供应给造纸厂和纸浆模塑厂。随着纸浆模塑技术和市场的发展,许多蔗渣浆厂的产业链开始向纸浆模塑制品延伸。
纸浆模塑原料之2:竹浆
竹浆是一种很好的
纸浆模塑
(植物纤维模)制品原材料。竹纤维属于中长纤维,性能介于针叶木与阔叶木之间,主要生产
精品工包
产品,餐具产品有少量添加。利用竹浆生产的产品韧性较强,生产深制品时不容易出现裂纹,表面光滑细腻且白度较高。但是制品表面进行摩擦以后容易出现毛绒状的绒毛纤维。使用竹浆时应该进行磨浆处理,以消除制品表面出现绒毛纤维现象。竹浆多用于制造高档的手机包装内托、化妆品包装,也用于制造餐具,是一种很好的纸浆模塑原材料。生产形状复杂、斜度和R角较小的产品一般都需要加入一定比例的竹浆。由于竹浆资源比较宝贵、价格相对蔗渣浆稍高,所以目前多用于与蔗渣纤维按一定的比例调配使用,以增加性能而又降低成本。中国的北方、四川、江西都有竹浆生产厂。
纸浆模塑原料之3:小麦秸秆浆
小麦秸秆浆,分为机制纤维麦草浆、化学机械麦草浆和化学麦草浆,主要生产餐具产品。
麦草浆纤维短,麦草浆纸浆模塑制品表面光滑细腻,挺度好,产品很脆,柔韧性差,大部分纸浆模塑餐具制品可以100%采用小麦秸秆浆作为原料。本色麦草秸秆浆制品外观光洁漂亮。但对于形状复杂、深度较深的麦草浆制品,一般生产过程中需要加入长纤维纸浆进行调配,增加其产品的韧性。
小麦秸秆浆多为原色浆。漂白的小麦秸秆浆在市场上较少见到。小麦秸秆浆多出现在中国山东省及中国北方。由于世界上特别是中国的北方,小麦种植面积非常大,大量小麦秸秆无法处理,所以小麦秸秆浆的生产具有广阔的前景,但小麦秸秆浆的得率比较低。
纸浆模塑原料之4:芦苇浆
芦苇浆纤维短,芦苇浆纸浆模塑制品表面光滑度不如蔗渣浆、竹浆、麦草浆的制品,挺度一般,也不如蔗渣浆、竹浆、麦草浆;芦苇浆纸浆模塑制品比较脆,柔韧性差;芦苇浆含杂质较多。大部分纸浆模塑
餐具制品
可以采用100%芦苇浆作为原料。芦苇浆制品外观不太光洁漂亮且杂质较多。
但对于形状复杂、深度较深的芦苇浆制品,一般生产过程中需要加入长纤维纸浆进行调配,增加其产品的韧性和表面可观赏性。
芦苇浆多出现在中国江苏、浙江、山东省及中国新疆等省份。特别是中国的长江入海口附近有大量芦苇产出,所以芦苇的生产具有丰富的资源,芦苇的得率也比较低。
纸浆模塑原料之5:棕榈浆
棕榈浆也是一种很好的纸浆模塑制品的原料。棕榈浆多为本色(原色)浆,主要生产餐具产品。
棕榈油厂在棕榈果榨油以后,把剩下的棕榈果纤维提取出来生产棕榈浆,再利用棕榈浆生产纸浆模塑(植物纤维)制品。棕榈浆模塑制品外观漂亮、挺度较好且有自然植物纤维色彩。棕榈纤维长度与麦草浆纤维接近,但得率比麦草浆高。虽然棕榈浆的杂质比较多,但这些杂质也是植物纤维,所以棕榈浆制品看上去很美观、很自然、很环保。是一种非常好的环保产品。
棕榈油厂在东南亚一带非常多。早在2000年前,马来西亚政府出台了棕榈纤维综合利用奖励政策,鼓励企业进一步开发利用棕榈果纤维。
纸浆模塑原料之6:木浆
木浆也是一种生产纸浆模塑制品的原料,主要用于生产高端工业工包类产品。
木浆主要分为针叶木浆和阔叶木浆, 用来生产纸浆模塑制品的木浆一般都是针叶木浆和阔叶木浆配合使用,各占一定比例。
针叶木浆纤维长且细,木浆比较纯净,杂质少。阔叶木浆纤维粗且短,且含有较多的杂质,成品强度相对低,成品比较疏松,吸收性能强,不透明度高。针叶木浆制造出来的纸浆模塑制品柔韧性好,耐折度高,抗张强度较好。阔叶木浆造出来的纸浆模塑制品松厚度高,挺度高,包装性能好。因此不同木浆所生产的产品厚度、密度会有所不同。
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不断扩大的千亿级美妆市场,可持续已是美妆包装的潮流
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