market trends and demands for roofing materials in japan.
Saturated non-woven or paper cloth, widely used in roof reinforced concrete buildings and wooden houses.
It is estimated that 0. 129 billion of roof plate production in Japan is 1997 m².
The base cloth saturated with asphalt is mainly made of non-woven fabric or paper. Mesh-
In some cases, the formation of woven fabric can also be used as a basic cloth, but this application is not common.
The paper cloth is large in size and does not weigh less than 400g persquare meter per unit, made of such a low
By way of paper making, the materials priced such as waste paper, pulp and fiber gather.
There are three kinds of non-woven base cloth: non-woven by spinning method, non-woven by resin bonding method or non-woven by wet paving method.
The raw materials of the roof base cloth are polyester textile non-woven fabric and polyester-
Slurry combination for resin bonding and wet paving non-woven fabric.
For specific roof applications, fiberglass non-woven fabrics are used at a lower frequency and are selected for their quality and functionality.
Table 1 shows the consumption of roof sheet base cloth;
The \"other\" category in the table is mostly paper.
The production of 0. 129 billion square meters of roof plates actually exceeds the total base consumption of 0. 15 billion square meters.
This is because, although most roof panels are made of a single type of base cloth (
Paper or a non-woven fabric)
Some are made of different kinds of bottom cloth (
Such as the combination of paper and polyester textile non-woven fabric).
In terms of non-woven fabrics, polyester textile bonding is the main technology for roof base cloth applications, consuming 51 million square meters, accounting for 34% of the total consumption, accounting for the total consumption of roof base cloth applications, accounting for the totalseeTable 1).
The consumption of polyester textile bonding is followed by a 18 million resin bonded non-woven fabric and a 12 million wet paved non-woven fabric.
The amount of fiberglass non-woven fabric in 2 million square meters is significantly reduced.
Trend roofing for non-woven suppliers polyester spun-glued non-woven fabrics are sold by Toyo Bo, Unitika, Asahi Chemical, Dongli and latville, Japan.
Toyobo and unitika are leading suppliers in the field;
The shares of the two companies totaled nearly 70%.
Non-woven fabrics bonded with resin for roof are produced by tajimarooying, and non-woven fabrics with wet shop are produced by Nisshin Kogyo.
These two companies, which are the manufacturers of roof panels, specialize in the production of non-woven fabrics on roof panels.
Polyester spun-adhesive non-woven fabric is purchased externally from other non-woven manufacturers.
Two other companies.
Tajimarooying and Industrial Co. , Ltd-
They are the leading and second largest manufacturers of roofing plates, who produce resin bonding and wet-spread non-woven fabrics for their own use.
Therefore, for other non-woven manufacturers, it is difficult to extend the field of roofing plates with reglued or wet laid base cloth.
Kin Ohmura is the president of the Osaka chemical marketing center, which specializes in non-woven fabrics, synthetic fibers and industrial textiles.
His Far East report is published every other month in Novo.
He can\'t be reached. 13-7, 1-
Sishi, USO Bohong town
Ku 550, Osaka, Japan; 81-6-441-1845; Fax: 81-6-445-8850.