High stiffness cellular plastic siding

• US 4,274,236 A
• Filed: 08/28/1978
• Issued: 06/23/1981
• Est. Priority Date: 08/28/1978
• Status: Expired due to Term

• Current Assignee: Gerald Kessler
• Original Assignee: Gerald Kessler
• Inventors: Kessler, Gerald
• Primary Examiner(s): Faw, Jr., Price C.
• Assistant Examiner(s): Raduazo, Henry E.
• Application Number:
  US05/937,455
• Time in Patent Office: 1,030 Days
• Field of Search: 52/309.4, 52/309.8, 52/309.9, 52/318, 52/309.6, 52/309.7, 428/170, 428/218, 428/160, 428/159, 428/167
• US Class Current: 52/309.8
• CPC Class Codes: B29C 44/04 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
• CPC Class Codes: E04C 2/205 of foamed plastics, or of plastics and foamed plastics, optionally reinforced
• CPC Class Codes: E04F 13/18 of organic plastics with or without reinforcements or filling materials of plastic-bound fibres or chips E04F13/16 or with an outer layer of organic plastics with or without reinforcements or filling materials; plastic tiles E04F13/0864 takes precedence
• CPC Class Codes: Y10T 428/24504 Component comprises a polymer [e.g., rubber, etc.]
• CPC Class Codes: Y10T 428/2457 Parallel ribs and/or grooves
• CPC Class Codes: Y10T 428/24595 and varying density

Abstract

A high stiffness siding for use on the exterior surfaces of buildings, particularly houses, in an overlapping pattern, is formed of unitary structural foam plastic, preferably polyvinyl chloride, with integral reinforcing ribs on its internal surface. The thickness of the siding is about 55-85 mils, with the ribs being about 25-65 mils thick; the density of the foam is about 0.85 to 1.15, except in the vicinity of the ribs, the ribs having a density of about 0.75.

Claims

1. An insulated, stiff and tear-resistant siding panel of integral and unitary extruded foam plastic construction comprising a main body portion having an upper end and a lower end and a back and a front, a hook-like flange projecting outwardly from the front of said main body portion near the upper end thereof, and a second flange projecting outwardly from the back of said main body substantially at the lower end thereof, said siding panel having a backing skin surface and a facing skin surface, said main body portion having a thickness of about 55-85 mils, a plurality of integral crossing ribs extending from said backing surface and unitary therewith, said ribs having a thickness of about 25-65 mils, said facing surface being substantially flat, said foam plastic of said main body portion being on the order of about 1/3 by volume cells, and said foam plastic of said ribs being on the order of about 1/2 by volume cells.

2. An insulated siding in accordance with claim 1 of polyvinyl chloride having a specific gravity of about 1.5, wherein the density of said main body portion is about 0.85 to 1.15 and the density of said ribs is about 0.45 to 0.85.

3. An insulated siding in accordance with claim 2 wherein said ribs cross at substantially right angles.

4. An insulated siding in accordance with claim 3 wherein some of said ribs extend longitudinally of said siding and others extend laterally thereof.

5. An insulated siding in accordance with claim 2 wherein the substantially flat facing is embossed.

6. An insulated siding panel in accordance with claim 1 further comprising a third flange projecting upwardly from approximately the end of said second flange, said third flange being generally parallel to said main body portion.

7. An insulated, stiff and tear-resistant siding panel of integral and unitary extruded foam plastic construction comprising a main body portion having a backing skin surface and a facing skin surface, said main body portion having a thickness of about 55-85 mils, a plurality of integral crossing ribs extending from said backing surface and unitary therewith, said ribs having a thickness of about 25-65 mils, said facing surface being substantially flat, said foam plastic of said main body portion being on the order of about 1/3 by volume cells, and said foam plastic of said ribs being on the order of about 1/2 by volume cells, wherein some of said ribs extend longitudinally of said siding and are of a density greater than the ribs not extending longitudinally.