Patents
US 11926929 B2: Melt blown nonwoven materials and fibers including starch-based polymeric materials
- Granted
- 2024-03-12
- Filed
- 2021-05-21 application 17327577
- Type
- Utility · 23 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are very high molecular weight (e.g., over 2 million, such as 3-20 million g/mol) starch-based materials, and formulations including such, which can be spun in spunbond, melt blown, yarn, or similar processes. Even with such very high molecular weights, the formulations can be processed at commercial line speeds, with spinneret shear viscosities of 1000 sec−1, without onset of melt flow instability. The starch-based material can be blended with one or more thermoplastic materials having higher melt flow index value(s), which serve as a diluent and plasticizer, allowing the very viscous starch-based component to be spun under such conditions. The particular melt flow index characteristics of the thermoplastic diluent material can be selected based on what type of process is being used (e.g., spunbond, melt blown, yarn, etc.). The starch-based material may exhibit high shear sensitivity, strain hardening behavior, and/or very high critical shear stress (e.g., at least 125 kPa).
Source: PVGPATDIS, file of 2026-04-10 (ipg240312.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ABSOLOGY Co., Ltd. 194 patents | Foreign company or organization | Idaho Falls, ID | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Donald R. Allen | Idaho Falls, ID | 43 | PVGPATDIS, file of 2026-04-10 | |
| Leopoldo V. Cancio | Vero Beach, FL | 17 | PVGPATDIS, file of 2026-04-10 | |
| Fehime Vatansever Ozaltun | Idaho Falls, ID | 3 | PVGPATDIS, file of 2026-04-10 | |
| Bradford LaPray | Idaho Falls, ID | 17 | PVGPATDIS, file of 2026-04-10 | |
| Bruno R. Pereira | Houston, TX | 22 | PVGPATDIS, file of 2026-04-10 | |
| Kenneth L. Kramer | Columbus, IN | 3 | PVGPATDIS, file of 2026-04-10 | |
| Steven P. Sherman | Cedar Hills, UT | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C08J | Working-up; general processes of compounding; after-treatment not covered by subclasses c08b, c08c, c08f, c08g or c08h | C08J3/005 | PVGPATDIS, file of 2026-04-10 |
| D01D | Mechanical methods or apparatus in the manufacture of artificial filaments, threads, fibres, bristles or ribbons | D01D5/0985 | PVGPATDIS, file of 2026-04-10 |
| D01F | Chemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons; apparatus specially adapted for the manufacture of carbon filaments | D01F9/00 | PVGPATDIS, file of 2026-04-10 |
| D04H | Making textile fabrics, e.g. from fibres or filamentary material ; fabrics made by such processes or apparatus, e.g. felts, non-woven fabrics; cotton-wool; wadding ; ; non-woven fabrics from staple fibres, filaments or yarns, bonded with at least one web-like material during their consolidation | D04H1/565 | PVGPATDIS, file of 2026-04-10 |
| D10B | Indexing scheme associated with sublasses of section d, relating to textiles | D10B2401/022 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2021-05-21 | Assignment Assignment of assignor's interest | ALLEN, DONALD R. signed 2021-05-18 CANCIO, LEOPOLDO V. signed 2021-05-18 KRAMER, KENNETH L. signed 2021-05-18 LAPRAY, BRADFORD signed 2021-05-18 OZALTUN, FEHIME VATANSEVER signed 2021-05-18 PEREIRA, BRUNO R. signed 2021-05-18 SHERMAN, STEVEN P. signed 2021-05-18 | BIOLOGIQ, INC. IDAHO FALLS, ID | 56319/130 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.