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德国ADVANSA的湿法无纺布超短纤维
- 2020-03-09-

The wetlaid process is a core process at nonwoven producers that focus on uniformity, light-weight and strength. Wetlaid products are suitable for many different technical applications such as automotive, filtration, medical, hygiene, wallpaper, packaging, embroidery, construction material, etc.

湿法成网工艺是无纺布生产商的核心工艺,专注于均匀性,轻量和强度。 湿法工艺产品适用于许多不同的技术应用,例如汽车,过滤,医疗,卫生,墙纸,包装,刺绣,建筑材料等各个领域。

 

Wherever more demanding nonwoven products and papers with an outstanding uniformity and without any kind of defects are required, the wetlaid process is a good option for which fibers with good dispersion in water are essential. The dispersion of the short cut is mainly dependent on fiber type, diameters, cut length, cross section and surface characteristics.

当要求无纺布产品和纸张具有优异的均匀性并且没有任何缺陷的时候,那湿法成网工艺是个很不错的选择。因为必须保证纤维在水中的良好分散性。纤维的类型、纤维的直径、纤维的长度、纤维的横截面、纤维的表面特性等是影响短纤维分散性的主要因素。

 

Polyester short cut improves the wet and dry strength, tear and burst strength and the wet dimensional stability when partially replacing wood pulp in papers and wet laid nonwovens. Depending on the end use of the final sheet, the polyester fiber percentage in the recipe can range from a few percent to almost 100%.

聚酯超短纤维在造纸和湿法无纺布中部分替代木浆时,可以提高它们的湿强度和干强度、撕裂和耐破强度以及潮湿环境下尺寸的稳定性。根据最后片材的最终用途,配方中的聚酯纤维百分比范围可以从百分之几到近百分之百不等。

 

ADVANSA is producing specially engineered short cut fibers, which fulfill all requirements needed for such applications. The fibers have a specially modified surface for a rapid and effective separation. Therefore, using moderate shear forces, the short cut fibers are evenly dispersed in water.

ADVANSA生产的是经过特殊设计的短纤维,它可以满足以上所述应用的所有要求。为了快速有效地使纤维分离,纤维的表面会有特殊处理。因此,利用适度的剪切力,可以让短纤维在水中均匀地分布。

 

ADVANSA fibers can be used for processing in horizontal wire (Fourdrinier) paper machines (cut length in the range of 3 to 6mm) as well as inclined wire machines with cut lengths up to 30 mm and even higher. ADVANSA’s portfolio includes customized polyester fibers with modified cross-sections, colored and binder fibers.

ADVANSA生产的纤维可以被用于长网造纸机上,切割的长度在3毫米到6毫米;当然也可应用于的斜网造纸机上,切割长度在30毫米甚至更长。ADVANSA的产品组合中包含定制的具有改性横切面的聚酯纤维,还有有色的粘合纤维。

 

The range of the linear density is between 0,3 dtex to 17,0 dtex. Various grades are compliant with the requirements for food contact articles as defined by EFSA, BfR and FDA guidelines. Current R&D works focus on further reduction of the linear density into direction of 0,2 dtex and even finer following the requirements of filter media producers.

纤维的线密度范围在0.3 分特17.0 分特之间。各种等级的纤维都符合EFSA(欧洲食品安全局),BfR(德国联邦风险评估所)和FDA(美国食品及药物管理局)准则对食品接触物品的要求。当前的研发工作集中在将线性密度降低至0.2 分特的这个方向,甚至根据玻纤滤纸生产商的要求进一步降低。

 

Further commercial types are bi-component fibers with polyethylene terephthalate core and lower melting sheath polymer. For end products that are designed for compostability ADVANSA offers dispersible poly lactonic acid (PLA) fibers. For sustainable end uses with particular low carbon footprint and non-renewable energy consumption figures, polyethylene terephthalate fibers from post-consumer recycled feedstock are also an available option.

更深一层次的商用类型是含有聚对苯二甲酸乙二醇酯(PET芯和低熔点聚合体绝缘层的双组分纤维。针对为可堆肥性设计的最终产品,ADVANSA提供可分散的聚乳酸(PLA)纤维。对于具有低碳足迹和不可再生能源消耗数据的可持续最终用途,来自消费后回收原料的聚对苯二甲酸乙二醇酯纤维(PET)来说也是一个可行有效的选择。

This environmentally friendly option is made by using an innovative recycling technology – out of raw material purchased from ADVANSA’s partner Reiling. These are PET bottle flakes from European Collection System. The traceability of the PET bottle flakes back to the bottle feed stock guarantees a high-level of quality control. As an external certification for the use of post-consumer recycled raw material in the relevant fiber products, ADVANSA’s operation has been awarded the GRS-label.

这种环境友好型的选择是利用一种创新的回收技术——这是从ADVANSA的合作伙伴Reiling那里购买原材料。这些PET涤纶树脂的瓶片来自于欧洲收集系统。变回瓶装原料的PET瓶片的可追溯性可以保证一个高水平的质量控制。在相关纤维产品中,作为使用循环再用原料的外部认证,ADVANSA的运营已获得GRS认证。

 

Using the state-of-the-art production technology at ADVANSA, this raw material is melted and pressed through super-fine filtration. In order to avoid any defects in fibers, the polymer is spun under strict process control.

In further steps, fibers obtain their final physical as well as their necessary surface properties.

Precise cutting length is ranging from 3mm to 38mm depending on the subsequent application.

利用ADVANSA的先进生产技术,将这种原料融化并通过超细过滤进行压榨。为了避免纤维有任何缺陷,聚合物的纺丝会有严格的过程控制。

在进一步处理过程中,纤维获得其最终物理特性以及必要的表面特性。

精确的纤维切割长度是从3毫米到38毫米,具体的情况取决于后续的应用。

 

Each intermediate step in the production process chain is strictly controlled, resulting in uniform product quality, which is proven by regular lab tests. Hence, the quality of recycled and non-recycled material is comparable.

Thanks to fully automatic packaging processes, the fibers are filled in bags or big bags on pallets, e.g., in 25 kg plastic bags, 150 kg to 400 kg big bags, or other packaging sizes upon request.

为了统一均匀的产品质量,因此生产过程链中每个中间步骤都会受到严格控制,其中产品的质量也已经通过常规的实验室测试。因此,回收材料和非回收材料的质量是可以相比的。

得益于采用的全自动包装工艺,它可以将纤维装入袋中或托盘上的大袋中,例如装入25千克塑料袋,150千克至400千克大袋中,或根据要求提供的其他包装尺寸。

 

With almost 50 years of experience – founded on its heritage of DuPont – ADVANSA is well recognized with its innovative fiber production based in Germany. The company focuses on the optimal development and production of innovative as well as technologically advanced fibers.

ADVANSA allows a high productivity within the supply chain and functionalizing of the final products. Thanks to its responsiveness, ADVANSA reacts to changing customer demands and supports developments in order to offer and implement competitive, customized products and individual solutions.

凭借将近50年的经验-基于杜邦的传统-ADVANSA在德国的创新纤维生产获得了广泛认可。该公司致力于创新纤维和技术先进纤维的研发和生产。

ADVANSA可以在供应链中凭借高生产率,并实现最终产品的功能化。为了给客户提供和执行具有竞争力的定制产品和个性化解决方案,ADVANSA得益于它的快速响应力,响应不断变化的客户需求,鼓励开发。

 

One of ADVANSA’s key values guiding the development of new products is sustainability while continually improving the safety, health and environmental performances. The company’s efforts and achievements and a wide range of fibers produced by ADVANSA have been recognized by international ecological certification and awards such as the EU Eco-label and the European Greenlight Program.

ADVANSA指导新产品开发的核心价值观之一是可持续性,同时不断提高安全性,健康性和环保特性。该公司的努力和成就以及ADVANSA生产的多种纤维已获得例如欧洲生态标志认证和欧洲绿灯计划等国际生态的认证和奖项

https://fiberjournal.com/advansas-wetlaid-fiber-engineering/


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