Biodegradable disposable diaper

• US 4,964,857 A
• Filed: 10/23/1989
• Issued: 10/23/1990
• Est. Priority Date: 10/23/1989
• Status: Expired due to Term

• Current Assignee: Charles Osborn
• Original Assignee: Charles Osborn
• Inventors: Osborn, Charles
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): CLARKE, ROBERT A
• Application Number:
  US07/425,130
• Time in Patent Office: 365 Days
• Field of Search: 604/395, 604/397, 604/358, 604/393
• US Class Current: 604/395
• CPC Class Codes: A61F 13/15211 soluble or disintegratable in liquid
• CPC Class Codes: A61F 13/15252 compostable or biodegradable
• CPC Class Codes: A61F 2013/15219 by mechanical separation of water resistant parts
• CPC Class Codes: A61F 2013/49076 as "I"-shaped
• CPC Class Codes: A61F 2013/53481 being biodegradable
• CPC Class Codes: A61F 2013/8455 being lubricants

Abstract

The present invention relates to an improved disposable diaper that is biodegradable, sanitary and environmentally safe. In general, the improved diaper has a removable inner sheet of material disposed of by flushing in a toilet or water closet. The remainder of the diaper is made of a biodegradable material that is disposed of in a conventional landfill.

Claims

1. Improved biodegradable disposable diaper comprising:

a removable inner sheet having a layer of liquid permeable material, an interior first layer of absorbant material and a first layer of moisture repellant material;

a removal means attached to the inner sheet for easy removal of the inner sheet;

a second layer of absorbant material associated with the inner sheet;

a second layer of moisture repellant material associated with the second layer of absorbant material and extending beyond the inner sheet along both longitudinal and transverse planes;

a plurality of perforations in the inner sheet located at the peripheral coterminous points of the inner sheet and second layer of moisture repellant material; and

a plurality of fastening tabs attached to the second layer of moisture repellant material.

2. An improved biodegradable disposable diaper in accordance with claim 1 wherein the first layer of absorbant material is absorbant cotton.

3. An improved biodegradable disposable diaper in accordance with claim 1 wherein the first layer of moisture repellent material is a coated paper.

4. An improved biodegradable disposable diaper in accordance with claim 3 wherein the coating on the coated paper is a natural wax.

5. An improved biodegradable disposable diaper in accordance with claim 1 wherein the second layer of moisture repellant material is a coated paper.

6. An improved biodegradable disposable diaper in accordance with claim 5 wherein the coating on the coated paper is a natural wax.

7. An improved biodegradable disposable diaper in accordance with claim 1 wherein the second layer of absorbant material is absorbant cotton.

8. An improved biodegradable disposable diaper in accordance with claim 1 wherein the removal means is a drawstring.

9. An improved biodegradable disposable diaper in accordance with claim 8 wherein the drawstring is twisted paper.

10. An improved biodegradable disposable diaper comprising:

a removable inner sheet having a layer of liquid permeable material, an interior first layer of absorbant material and a first layer of coated paper attached to the absorbant material;

a drawstring attached to the inner sheet along its Periphery for easy removal of the inner sheet;

a second layer of absorbant material associated with the coated paper of the inner sheet;

a second layer of coated paper associated with the second layer of absorbant material and extending beyond the inner sheet along both longitudinal and transverse planes;

a plurality of perforations in the inner sheet located at the peripheral coterminous points of the inner sheet and second layer of coated paper; and

a plurality of fastening tabs attached to the extended portion of the second layer of coated paper.

11. An improved biodegradable disposable diaper in accordance with claim 10 wherein the first layer of coated paper is coated with a natural wax.

12. An improved biodegradable disposable diaper in accordance with claim 10 wherein the second layer of coated paper is coated with a natural wax.

13. An improved biodegradable disposable diaper in accordance with claim 10 wherein the second layer of absorbant material is absorbant cotton.

14. An improved biodegradable disposable diaper in accordance with claim 10 wherein the drawstring is twisted paper.

15. An improved biodegradable disposable diaper comprising:

a removable inner sheet having a layer of liquid permeable material, a first layer of absorbant cotton;

a first layer of paper coated with a natural wax attached to the first layer of absorbant cotton and having hollow channels along its periphery;

a twisted paper drawstring attached to the inner sheet along its periphery through the hollow channels therein for easy removal of the inner sheet;

a second layer of absorbant cotton associated with the first layer of paper coated with a natural wax;

a second layer of paper coated with a natural wax associated with the second layer of absorbant cotton and extending beyond the inner sheet along both longitudinal and transverse planes;

a plurality of perforations in the inner sheet located at the peripheral coterminous points of the inner sheet and second layer of paper coated with a natural wax for easy detachment of the inner sheet; and

a plurality of fastening tabs attached to the extended portion of the second layer of paper coated with a natural wax.