PROCESSO E APARELHO PARA FORMACAO DE ELEMENTOS DE FILTRO

PROCESSO E APARELHO PARA FORMACAO DE ELEMENTOS DE FILTRO

A ring-shaped corrugated filter element blank (10) having radially alternate peak and valley folds (12, 14) is placed on a first mold (16) having as many first concentric projections as the number of the peak folds of the ring-shaped blank and as many first concentric grooves as the number of the va...

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Bibliographische Detailangaben
Hauptverfasser: NAOHIKO KONDO, YOSHIAKI MIYAGAWA, MINEO HANAI, YUJI ITO, IKUO MOCHIZUKI, TALATOSHI IWASE
Format: Patent
Sprache:por
Schlagworte:
MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER
MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSESB31B OR B31C
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER
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Zusammenfassung:A ring-shaped corrugated filter element blank (10) having radially alternate peak and valley folds (12, 14) is placed on a first mold (16) having as many first concentric projections as the number of the peak folds of the ring-shaped blank and as many first concentric grooves as the number of the valley folds of the ring-shaped blank, with the peak folds fitted respectively over the first projections (18) and the valley folds fitted respectively in the first grooves (20). Then, the ring-shaped blank is pressed between the first mold and a second mold (28), the second mold having second projections lying along concentric lines fitting respectively in the first grooves with the valley folds received therein, and second concentric grooves receiving respectively the first projections with the peak folds fitted thereover. The ring-shaped blank is heated while it is being pressed between the first and second molds, thereby forming a ring-shaped filter element. Thereafter, the ring-shaped filter element (10A) is cooled.