US4781773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing containers from multilayered material
Assignee: Individual
•
Filing: 1987-08-11
•
Granted: 1988-11-01
•
Expires: 2007-08-11
Abstract
Abstract A method of manufacturing containers, the method comprising the steps of (a) extruding an elongate tube of plastics material, the tube having a rectangular outer cross-section and an elongate central cylindrical cavity; (b) cutting the tube transversely into a plurality of container body portions; (c) sealing a base to one end of each body portion; and (d) sealing a top to the other end of each body portion. The invention also provides apparatus for manufacturing containers, comprising an extrusion device for extruding an elongate tube of plastics material, the tube having a rectangular cross-section and an elongate central cylindrical cavity, a cutting device for cutting the tube transversely into a plurality of container body portions, a first sealing means for sealing a base to one end of each body portion and a second sealing means for sealing a top to the other end of each body portion.
Inventors
- 👤 David J. Instance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:04
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/003; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/322; B29C44/324; B29C44/334; B29C48/00; B29C48/15; B29C48/151; B29C48/001; B29C48/0011; B29C48/0017; B29C48/0018; B29C48/0021; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/12; B29L; B29L2031/00; B29L2031/712; Y; Y10; Y10S; Y10S206/00; Y10S206/822; Y10S220/00; Y10S220/13; Y10S220/902; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A method of manufacturing containers, the method comprising the steps of: (a) extruding an elongate tube of plastics material, the tube having a rectangular outer cross-section and an elongate central cylindrical cavity; (b) cutting the tube transversely into a plurality of container body portions; (c) sealing a base to one end of each body portion; and (d) sealing a top to the other end of each body portion.
Claim 2
Independent Claim
68 words
A method of manufacturing containers, the method comprising the steps of: (a) extruding an elongate tube of plastics material, the tube having a rectangular outer cross-section and an elongate central cylindrical cavity; (b) cutting the tube transversely into a plurality of container body portions; (c) sealing a base to one end of each body portion; and (d) sealing a top to the other end of each body portion.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein the diameter of the elongate central cylindrical cavity is a selected one of a plurality of diameters.
Claim 4
Dependent Claim
48 words
A method according to claim 1, wherein after the base as been sealed to the said one end of each body portion the cavity in the body portion is filled with a product and then the top is sealed to the said other end of the end portion.
Claim 5
Dependent Claim
14 words
A method according to claim 1, wherein the plastics material is a foamed material.
Claim 6
Dependent Claim
26 words
A method according to claim 1, wherein a tubular sleeve of plastics material which lines the elongate central cylindrical cavity is co-extruded with the elongate tube.
Claim 7
Dependent Claim
38 words
A method according to claim 1, wherein the elongate tube is extruded around a tubular sleeve of plastics material, the tubular sleeve having been formed by welding together two longitudinal edges of a sheet of the plastics material.
Claim 8
Dependent Claim
16 words
A method according to claim 1, wherein the top includes a removable closure for the container.
Claim 9
Dependent Claim
13 words
A method according to claim 1, wherein the top comprises a plastics sheet.
Claim 10
Dependent Claim
27 words
A method according to claim 1, wherein the top or the base is provided with a strip of magnetic material for recording information relating to the container.
Claim 11
Dependent Claim
75 words
Apparatus for manufacturing containers, comprising an extrusion device for extruding an elongate tube of plastics material, the tube having a rectangular cross-section and an elongate central cylindrical cavity, a cutting device for cutting the tube transversely into a plurality of container body portions, a first sealing means for sealing a base to one end of each body portion and a second sealing means for sealing a top to the other end of each body portion.
Claim 12
Dependent Claim
75 words
Apparatus for manufacturing containers, comprising an extrusion device for extruding an elongate tube of plastics material, the tube having a rectangular cross-section and an elongate central cylindrical cavity, a cutting device for cutting the tube transversely into a plurality of container body portions, a first sealing means for sealing a base to one end of each body portion and a second sealing means for sealing a top to the other end of each body portion.
Claim 13
Dependent Claim
29 words
Apparatus according to claim 10, wherein the extrusion device is adjustable whereby the diameter of the cylindrical elongate central cavity is a selected one of a plurality of diameters.
Claim 14
Dependent Claim
30 words
Apparatus according to claim 10, further comprising means for filling the cavity with a product after the base has been sealed to the said one end of each body portion.
Claim 15
Dependent Claim
30 words
Apparatus according to claim 10, wherein the extrusion device is adapted to co-extrude with the elongate tube a tubular sleeve of plastics material which lines the elongate central cylindrical cavity.
Claim 16
Dependent Claim
47 words
Apparatus according to claim 10, wherein the extrusion device comprises means for forming a tubular sleeve from a sheet of plastics material by welding together the two longitudinal edges of the sheet and the extrusion device is adapted to extrude the elongate tube around the tubular sleeve.
References Cited (Backward Citations)
US3403714A
Cited
US3810839A
Cited
US4221621A
Cited
US4093414A
Cited
US4310366A
Cited
US4533050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |