Low density flexible resilient absorbent open-cell thermoplastic foam
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJeffrey Krueger, Renette Richard
Life of this patent
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Abstract
A low density, flexible, resilient, absorbent open-cell thermoplastic foam includes a combination of thermoplastic elastomer, ethylene ionomer, stiff polymer, and surfactant selected to provide various advantageous properties. The foam is useful in personal care absorbent articles, medical absorbent articles, absorbent wiping articles, and a variety of other applications.
Claims28
An open-cell, absorbent thermoplastic foam, including a foam formula which comprises:
- A) about 5 to about 70 parts by weight of a thermoplastic elastomer;
- B) about 5 to about 70 parts by weight of an ethylene ionomer;
- C) about 15 to about 60 parts by weight of a stiff polymer selected from the group consisting of polystyrene and combinations thereof;
- and
- D) about 0.5 to about 5 parts by weight of a surfactant.
(canceled)
A low density, open-cell, absorbent thermoplastic foam, including a foam formula which comprises:
- A) 10 to about 50 parts by weight thermoplastic elastomer;
- B) 10 to about 50 parts by weight ethylene ionomer;
- C) about 25 to about 60 parts by weight stiff polymer selected from the group consisting of polystyrene, high impact polystyrene, and combinations thereof;
- and
- D) about 0.5 to about 5 parts by weight of a surfactant.
A low density, open-cell thermoplastic foam including at least about 75% by weight of a foam formula and a balance of additional ingredients, the foam formula comprising:
- A) about 5 to about 70 parts by weight of a thermoplastic elastomer selected from the group consisting of styrene block copolymer elastomers and combinations thereof;
- B) about 5 to about 70 parts by weight of an ethylene ionomer;
- C) about 15 to about 60 parts by weight of a stiff polymer selected from the group consisting of polystyrene, high impact polystyrene, and combinations thereof;
- and
- D) about 0.5 to about 5 parts by weight of a surfactant.
Dependencies are inferred from the claim text.