Nonwovens News

Freudenberg Introduces Binder-Free PLA/Pulp Wetlaid Material

Material addresses needs of horticulture, packaging, filtration, apparel and healthcare markets

Freudenberg Performance Materials has created a 100% bio-based PLA/wood pulp material made via a wetlaid process without the use of chemical binders. These materials combine the benefits of both PLA and wood pulp to address the needs of specific segments within plant propagation systems, packaging, filtration, apparel and healthcare.

Freudenberg’s innovation lies in the ability to come the water absorption and biodegradability characteristics of wood pulp with the high strength and hot sealability of PLA. The entire product is 100% bio-based and binder-free.

The use of  the wetlaid process also represents a technological breakthrough compared to conventional PLA nonwovens, which are made using spunlaid technology. While spunlaid nonwovens can only be produced from polymeric raw materials, wetlaid nonwovens can be manufactured with a mix of polymeric and non-polymeric materials.

PLA-based wetlaid nonwovens have potential in a variety of applications in markets such as horticulture, packaging, filtration and healthcare. In horticulture, PLA/wood pulp wetlaid materials achieve the ideal balance between good water absorption, good rooting and degradation properties due to wood pulp and the high strength provided by PLA on the other. These properties are required by short-, medium- and long-term plant propagation systems, e.g. for vegetable growing, flower cultivation and forestry. The new PLA-based product line complements the current range of plant propagation wetlaid materials offered by Freudenberg, based on different component mixes including wood pulp, polypropylene, polyester and viscose.

For packaging, PLA/wood pulp wetlaidsopen up new sustainable opportunities by replacing plastic-based packaging, e.g. bio-based desiccant bags to replace traditional synthetic desiccant bags.

Other applications of PLA-based wetlaid materials  include embroidery backings and interlinings for apparel, and wound dressings for the healthcare market.

The two-component mix is flexible, therefore allowing for a wide range of products to fulfill the requirements of the various applications.

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