Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1989-07-05
1990-10-16
Simmons, David
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162123, 162125, 162132, 162133, 162146, 47 73, 47 74, 47 77, D21F 1100
Patent
active
049632302
ABSTRACT:
Disclosed herein is agricultural paper to be made into pots for raising seedlings. It is made up of a first layer made chiefly of natural pulp and a second layer made of synthetic fibers having a basis weight of 3-15 g/m.sup.2, said first layer and second layer being joined to each other by the wet papermaking process which intertwines the fibers of the two layers at their joining interface. The second layer is formed by fusion bonding composite synthetic fibers of polymers having different plasticizing temperatures.
REFERENCES:
patent: 3953642 (1976-04-01), Forbess et al.
patent: 4096313 (1978-06-01), Fujita et al.
patent: 4231186 (1980-11-01), Ruuska
patent: 4477516 (1984-10-01), Sugihara et al.
Testing Method for Tensile Strength of Paper and Paperboard JIS-P-8113-1976, 1980 Tappi International Symposium on Synthetic Pulps and Papers.
Higashimori Shosuke
Kawase Mitsuru
Matsuki Hiroshi
Matsumoto Hisashi
Nagano Takayuki
Dang Thi
Kuraray Co. Ltd.
Nihon Tensaiseito Kabushiki Kaisha
Oji Paper Company Ltd.
Simmons David
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