High efficiency disposable cellulosic wiper
AssigneeGeorgia-Pacific Consumer Products LP
InventorsDaniel W. Sumnicht, Joseph H. Miller
Life of this patent
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Abstract
A high efficiency disposable cellulosic wiper includes (a) pulp-derived papermaking fiber; (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits a Laplace pore volume fraction at pore sizes less than 15 microns of at least 1.5 times that of a like wiper prepared without regenerated cellulose microfiber. The wipers of the invention exhibit remarkable residue removal efficiency.
Claims128
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber having a characteristic scattering coefficient of less than 50 m2/kg;
- (b) up to 75% by weight fibrillated regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg,
- with the proviso that the wiper has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight fibrillated regenerated cellulosic microfiber having a characteristic CSF value less than 175 ml, the microfiber being further characterized in that 40% by weight thereof is finer than 14 mesh,
- with the proviso that the wiper has more than 25% by weight of the regenerated cellulose microfiber.
A method of cleaning residue from a substrate comprising:
- (a) providing a cellulosic wiper comprising from about 90% by weight to about 25% by weight pulp-derived papermaking fiber and from about 10% to about 75% by weight fibrillated regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml;
- (b) applying the wiper to a residue-bearing surface with pressure and wiping the surface under pressure to remove residue therefrom.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits a relative wicking ratio of at least 1.5,
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits an average effective pore radius of less than 50 microns,
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits a Relative Bendtsen Smoothness @ 1 kg of pressure of at least 1.5 as compared with a like wiper prepared without microfiber,
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml,
- the microfiber being selected and present in amounts such that the wiper exhibits a relative water residue removal efficiency of at least 150% as compared with a like sheet without regenerated cellulosic microfiber.
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml,
- the microfiber being selected and present in amounts such that the wiper exhibits a relative oil residue removal efficiency of at least 150% as compared with a like sheet without regenerated cellulosic microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml,
- the microfiber being selected and present in amounts such that the wiper exhibits a Laplace pore volume fraction at pore sizes less than 15 microns of at least 1.5 times that of a like wiper prepared without regenerated cellulose microfiber,
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
A high efficiency disposable cellulosic wiper comprising:
- (a) 25% or more by weight pulp-derived papermaking fiber;
- (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml,
- the microfiber being selected and present in amounts such that the wiper exhibits a capillary pressure at 10% saturation by extrusion porisimetry of at least twice that of a like sheet prepared without regenerated cellulose microfiber,
- with the proviso that the sheet has more than 25% by weight of the regenerated cellulose microfiber.
Dependencies are inferred from the claim text.