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US 9,174,247 B2Granted
Cleaning implement comprising elastic compressed foam
AssigneeThe Procter & Gamble Company
InventorsDenis Alfred Gonzales, Geert Andre Deleersnyder, Peter Nessel, Tobias Heinz Steinke
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Abstract
The present invention relates to a cleaning implement comprising elastic compressed foam and to a method of cleaning a hard surface with said cleaning implement.
Claims10
A method of making a cleaning implement based on melamine-formaldehyde foam, wherein said foam comprises elastic compressed foam based on melamine-formaldehyde resins obtained by a process comprising the steps of:
- a) Providing a melamine-formaldehyde precondensate and expanding the precondensate to a soft, not finally-cured melamine-formaldehyde foamed material;
- b) Compressing the soft, not finally cured melamine-formaldehyde foamed material of step a), in the range of about 1 to about 90% to yield an elastic compressed melamine-formaldehyde material;
- c) Drying the elastic compressed melamine-formaldehyde material of step b) to form at least two elastic compressed foam layers having a density in the range of about 5 to about 100 g/l;
- d) Providing a third layer of melamine-formaldehyde material comprising a foam material which is not compressed;
- and
- d) Joining three layers of melamine-formaldehyde material, to yield a cleaning implement comprising two outer layers of said elastic compressed foam and an inner layer of melamine-formaldehyde material.
3 more elements
Dependencies are inferred from the claim text.