Compostable, biodegradable foam core board

Details Compostable, biodegradable foam core board Compostable, biodegradable foam core board

1993-07-08

1995-08-01

Zirker, Daniel R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283044, 4283084, 4283191, 521 56, 521 79, 521141, 521916, B32B 326, B32B 514

Patent

active

054379245

ABSTRACT:
A compostable, biodegradable foam core board has a facing sheet adhered to a foam core sheet made of a foamable biodegradable material selected from a polyvinyl alcohol polymer, a starch-based thermoplastic polymer, a polylactic acid polymer, and other foamable, biodegradable polymers having structural rigidity when foamed. The foam core sheet has selected structural properties including a foam core weight in a preferred range of 30 to 50 lbs/msf, a foam density in a preferred range of 1.5 to 9 lbs/ft.sup.3, and a foam cell size in a preferred range of 0.30 to 0.70 mm. In one example, the foam core material is composed of a mixture of a polyvinyl alcohol polymer and high-melt-index polystyrene as a structural polymer additive. In another preferred example, the foam core material contains a blend of destructurized starch, polyethylene, polyvinyl alcohol, polyvinyl acetate, and glycerol as a plasticizer.

REFERENCES:
patent: 3415714 (1968-12-01), Hider
patent: 3551243 (1970-12-01), Schuur et al.
patent: 3673125 (1972-06-01), Takahashi et al.
patent: 3778390 (1973-12-01), Ulrich
patent: 4049592 (1977-09-01), Maans et al.
patent: 4132839 (1979-01-01), Marans et al.
patent: 4276339 (1981-06-01), Stoveken
patent: 4591475 (1986-05-01), Tomka et al.
patent: 4655840 (1987-04-01), Wittwer et al.
patent: 4673438 (1987-06-01), Wittwer et al.
patent: 4790881 (1988-12-01), Wittwer et al.
patent: 4863655 (1989-09-01), Lacourse et al.
patent: 4900361 (1990-02-01), Sachetto et al.
patent: 5052578 (1991-10-01), Goodwin
patent: 5089535 (1992-02-01), Malwitz et al.
patent: 5095054 (1992-03-01), Malwitz et al.
patent: 5110838 (1992-05-01), Tokiwa et al.
patent: 5116550 (1992-05-01), Perkins
patent: 5116880 (1992-05-01), Tokiwa et al.
patent: 5134171 (1992-07-01), Hammel et al.
patent: 5252271 (1993-10-01), Jeffs
patent: 5272181 (1993-12-01), Boehmer et al.
Reedy International Corporation, "SAFOAM-The Chemical Nucleating and Blowing Agent of the Future- Product Range", 1 page.
Reedy International Corporation, "SAFOAM RIC-50 Specification Sheet", 1 page.
Reedy, Michael E., "Material Safety Data Sheet", pp. 1-4, Jan. 4, 1991, Keyport, N.J.
Karen F. Lindsay, "`Truly Degradable` Resins are Truly Commercial", Modern Plastics, Feb. 1992.
Laurie McCarthy-Bates, "Biodegradables Blossom into Field of Dreams for Packages", Plastic World, pp. 22-27, Mar. 1993.
Reedy International Corporation, "Suggested Running Procedures For SAFOAM Polyethylene Masterbatches in Extrusion", 1 page.

Affiliated with

Also associated with

Rating

Compostable, biodegradable foam core board does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compostable, biodegradable foam core board, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compostable, biodegradable foam core board will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-733057