DOST-FPRDI finds a new use for invasive ‘lapnis’
The Department of Science and Technology-Forest Products Research and Development Institute (DOST-FPRDI) is now exploring the possibility of using lapnis bast fibers for paper conservation.
Lapnis or paper mulberry [Broussonetia papyrifera (L.) L’Herit ex Vent] is a type of shrub introduced in the Philippines in 1935 as a reforestation species and a source of fiber. Over the years, however, it has come to be known as a pest – thriving uncontrollably and invading vast tracks of idle lands in the country.
“Our initial research showed that lapnis’ strength and long fibers make it a good substitute for imported conservation paper,” said project leader Cesar O. Austria.
Paper conservation is the process of restoring and preserving all kinds of important paper-based objects such as archival documents and artworks. Made by hand or machine, paper for conservation is used to repair tears, consolidate and give support to strengthen weak and brittle paper artifacts.
Generally, these papers should be strong, insect- and tear-resistant, acid-free, and translucent. According to Austria, the country mostly imports these papers from Thailand and Japan.
The lapnis handmade paper (thin sheet) is being tested on brittle and damaged paper artifacts by a paper conservator.
“The DOST-FPRDI produced at least five different kinds of lapnis handmade papers that were evaluated by a paper conservator. Thin lapnis handmade paper is particularly good as backing material for supporting artwork on paper; as pre-coated lining papers for mending tears; and as hinges for framing art on paper, among others.”
1.jpg)
