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US 2003/0170438 A1Published application
Method of producing ribbed board and product thereof
OwnerSteven K. Lynch, Bei-Hong Liang +3inventors
InventorsSteven K. Lynch, Bei-Hong Liang, Frederick Frein, Karine A. Luetgert, Dennis J. Farrell
Life of this patent
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Abstract
A method for the production of ribbed board product, such as fiberboard, flakeboard, or waferboard, which resists fracturing during manufacture. The ribbed board product made according to the invention can be used as decking and in packaging and shipping components.
Claims59
A method of producing a ribbed board product, said method comprising the steps of:
- a) forming a mat comprising a material selected from the group consisting of wood-based materials, agricultural fibers, and synthetic fibers;
- b) providing the mat in a die, said die having a ribbed configuration with at least two outer zones and at least two angled zones;
- c) closing the die to form a die gap, wherein the die gap at at least two of the outer zones differs from the die gap at at least two of the angled zones;
- and
- d) consolidating said mat under pressure and heat to form the ribbed board product wherein the density of the ribbed board product differs in at least two locations.
2 more elements
A ribbed board product comprising:
- at least two longitudinally extending outer zones having a first caliper;
- at least one longitudinally extending angled zone having a second caliper, wherein said angled zone is disposed between and contiguous with said outer zones;
- wherein said first caliper and said second caliper differ;
- and
- wherein the density of the ribbed board product differs in at least two locations.
2 more elements
A method of producing a ribbed board product, said method comprising the steps of:
- a) forming a mat comprising a material selected from the group consisting of wood-based materials, agricultural fibers, and synthetic fibers;
- b) providing the mat in a die, said die having a ribbed configuration with at least two outer zones and at least two angled zones;
- c) closing the die to form a die gap, wherein the die gap at at least two of the outer zones differs from the die gap at at least two of the angled zones;
- and
- d) consolidating said mat under pressure and heat to form the ribbed board product wherein the density of the angled zones is less than the density of the outer zones.
2 more elements
A ribbed board product comprising:
- at least two longitudinally extending outer zones having a first caliper;
- at least one longitudinally extending angled zones having a second caliper, wherein said angled zone is disposed between and contiguous with said outer zones;
- wherein the said first caliper and said second caliper differ;
- and wherein the density of the angled zones is less than the density of the outer zones.
1 more element
Dependencies are inferred from the claim text.