US3387427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a carton enclosed package from a preformed foldable blank
Assignee: WR Grace and Co
•
Filing: 1963-05-10
•
Granted: 1968-06-11
•
Expires: 1983-05-10
Abstract
No abstract record available.
Inventors
- 👤 Richard R Perdue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:33
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B29; B29C; B29C51/00; B29C51/16; B29C51/165; B65B; B65B11/00; B65B11/50; B65B11/52; B65D5/00; B65D5/20; B65D5/28; B65D5/42; B65D5/56; B65D75/00; B65D75/26; B65D75/28; B65D75/30; B65D75/32; B65D75/36; B65D75/366; B65D75/52; B65D75/522; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF FORMING A SEALED PACKAGE FROM A CARTON BLANK AND THERMOPLASTIC FILM COMPRISING THE STEPS OF: (A) PRESSING A FLAT, PRE-SCORED BLANK INTO CONFORMITY WITH A FEMALE MOLD SO THAT FLANGES ARE FORMED COMPLETELY AROUND THE UPPER PERIPHERY OF THE MOLD; (B) COATING THE FLANGES WITH A HEAT-ACTIVATABLE ADHESIVE; (C) HEATING A THERMOFORMABLE THERMOPLASTIC FILM TO FORMING TEMPERATURE; (D) COVERING THE MOUTH OF THE MOLD WITH THE HEATED FILM SO THAT THE FILM ADHERES TO THE ADHESIVE COMPLETELY AROUND THE PERIPHERY OF THE BLANK; (E) THERMOFORMING THE FILM INTO A SUBSTANTIALLY CONFORMING LINER FOR THE BLANK; (F) FILLING THE LINED BLANK WITH THE PRODUCT TO BE PACKAGED; (G) COVERING THE MOUTH OF THE FILLED BLANK WITH A HEAT SEALABLE COVER MATERIAL; AND, (H) SEALING THE COVER MATERIAL TO THE THERMOFORMABLE FILM.
Claim 2
Independent Claim
133 words
A METHOD OF FORMING A SEALED PACKAGE FROM A CARTON BLANK AND THERMOPLASTIC FILM COMPRISING THE STEPS OF: (A) PRESSING A FLAT, PRE-SCORED BLANK INTO CONFORMITY WITH A FEMALE MOLD SO THAT FLANGES ARE FORMED COMPLETELY AROUND THE UPPER PERIPHERY OF THE MOLD; (B) COATING THE FLANGES WITH A HEAT-ACTIVATABLE ADHESIVE; (C) HEATING A THERMOFORMABLE THERMOPLASTIC FILM TO FORMING TEMPERATURE; (D) COVERING THE MOUTH OF THE MOLD WITH THE HEATED FILM SO THAT THE FILM ADHERES TO THE ADHESIVE COMPLETELY AROUND THE PERIPHERY OF THE BLANK; (E) THERMOFORMING THE FILM INTO A SUBSTANTIALLY CONFORMING LINER FOR THE BLANK; (F) FILLING THE LINED BLANK WITH THE PRODUCT TO BE PACKAGED; (G) COVERING THE MOUTH OF THE FILLED BLANK WITH A HEAT SEALABLE COVER MATERIAL; AND, (H) SEALING THE COVER MATERIAL TO THE THERMOFORMABLE FILM.
References Cited (Backward Citations)
US3124915A
Cited
US2621129A
Cited
US2885840A
Cited
US2858013A
Cited
US2948390A
Cited
US3061984A
Cited
US3195425A
Cited
US3247643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |