The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 10, 1981

Filed:

Jan. 12, 1979
Applicant:
Inventors:

Seishiro Akaura, Settsu, JP;

Yasushi Nagamune, Settsu, JP;

Takeshi Nakamura, Settsu, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
425111 ; 9 8 / ; 264 469 ; 264251 ; 2643287 ; 264D / ; 425116 ; 425121 ; 425572 ; 425588 ; 4258 / ;
Abstract

A process for producing cork lines which comprises holding a leader or leaders with a pair of metal molds having at the junctional surfaces thereof one or more cavities for forming a float or floats and one or more furrows formed so as to pass through said cavity or cavities for holding said leader or leaders, injecting a molten synthetic resin mixed with a foaming agent into said cavity or cavities to effect molding and foaming of said resin, cooling said metal molds and taking out a float or floats integrally fixed to said leader or leaders from said metal molds. An apparatus for producing cork lines which comprises an injection molding machine having a pair of metal molds with a cavity or cavities to form a float or floats and with furrows formed so as to pass through said cavity or cavities for holding a leader or leaders on the junctional surfaces of said metal molds, a device for maintaining said leader or leaders in stretched state between said metal molds and a device for intermittently conveying said leader or leaders in stretched state for a given distance in the longitudinal direction. A cork line thus produced can be used in various fields of industry, especially for fisheries.


Find Patent Forward Citations

Loading…