Pencil sheath compositions, method for making pencils

Details Pencil sheath compositions, method for making pencils Pencil sheath compositions, method for making pencils

1974-10-29

1976-09-28

Lieberman, Allan

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 459, 264 469, 264149, 264174, 264237, 264271, 264DIG5, 264DIG14, B29D 2700, B29F 310, B43K 1914

Patent

active

039831957

ABSTRACT:
Pencils made with a resin-based sheath to replace wood sheaths. A sheath material consisting essentially of a resin binder, a fibrous filler and a metallic soap is extruded around a marking core. The resulting extrudate is immediately chilled after leaving the die, and cut into pencil lengths. The apparatus includes core feeding and transport means, core preheating means and chilling means. The resulting pencils possess the physical qualities associated with wood-sheathed pencils due to the fine, closed cell structure of the sheath material. The surface of the sheath is smooth and may be coated with a pigmented resin or painted.

REFERENCES:
patent: 1937104 (1933-11-01), Thomsen
patent: 2408398 (1946-10-01), Johnson
patent: 2790202 (1957-04-01), Lorenian
patent: 2988784 (1961-06-01), Lorenian
patent: 3704071 (1972-11-01), Muller et al.

Affiliated with

Also associated with

Rating

Pencil sheath compositions, method for making pencils does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pencil sheath compositions, method for making pencils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pencil sheath compositions, method for making pencils will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2080795