US4061702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a plastic container
Assignee: Individual
•
Filing: 1976-09-27
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Granted: 1977-12-06
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Expires: 1996-09-27
Abstract
Abstract The method of coating a form such as a core or mold to make a thin walled thermoplastic container shell wherein excess plastic is provided in the wall of the shell where required in a predetermined material increasing configuration. The excess plastic is then molded under heat and pressure to provide a localized thickened wall portion of the container.
Inventors
- 👤 Milton Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:19
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/20; B29C; B29C41/00; B29C41/02; B29C41/08; B29C57/00; B29D1/00; B29L; B29L2001/00; B29L2016/00; B29L2023/00; B29L2023/20; B29L2031/00; B29L2031/712
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
117 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thicker walled portion comprising the steps of: a. forming a core having a plurality of surface increasing extensions thereon; b. applying a thermoplastic coating to said core to form a thin walled container shell; c. curing said coating; d. removing said container shell from said core; e. placing said container shell on a shell supporting mandrel; f. heating the portion of said container shell formed over said core surface increasing extensions to its plastic flow temperature; and, g. compressing the said portion of said container shell formed over said core surface increasing extensions into a thickened wall portion of said container.
Claim 2
Independent Claim
117 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thicker walled portion comprising the steps of: a. forming a core having a plurality of surface increasing extensions thereon; b. applying a thermoplastic coating to said core to form a thin walled container shell; c. curing said coating; d. removing said container shell from said core; e. placing said container shell on a shell supporting mandrel; f. heating the portion of said container shell formed over said core surface increasing extensions to its plastic flow temperature; and, g. compressing the said portion of said container shell formed over said core surface increasing extensions into a thickened wall portion of said container.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein said thickened wall portion is formed into a nozzle.
Claim 4
Dependent Claim
14 words
The method of claim 2, wherein closure engaging means are formed on said nozzle.
Claim 5
Dependent Claim
15 words
The method of claim 3, wherein said closure engaging means are formed into screw threads.
Claim 6
Dependent Claim
19 words
The method of claim 2, wherein said closure engaging means are formed into means to secure a snap-on cap.
Claim 7
Dependent Claim
29 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions acquires a mating configuration with said core surface increasing extensions.
Claim 8
Dependent Claim
33 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a plurality of pleats concentric to the longitudinal axis of said container shell.
Claim 9
Dependent Claim
33 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a plurality of pleats extending transversely to the longitudinal axis of said core.
Claim 10
Dependent Claim
34 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a plurality of pleats extending parallel to the longitudinal axis of said container shell.
Claim 11
Dependent Claim
23 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a conical portion.
Claim 12
Dependent Claim
13 words
The method of claim 10, wherein said conical portion is formed into pleats.
Claim 13
Dependent Claim
24 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a plurality of fins.
Claim 14
Dependent Claim
23 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a geometrical honeycomb.
Claim 15
Dependent Claim
23 words
The method of claim 1, wherein the portion of said container shell formed over said core surface increasing extensions provides a polysided configuration.
Claim 16
Independent Claim
106 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thick walled portion comprising the steps of: a. forming a container core having a plurality of surface increasing extensions in the vicinity of the thick walled portion of said container; b. electrostatically applying a thermoplastic coating to said core to form a container shell with material increasing extensions; c. removing said shell from said core; d. placing said shell on a shell supporting mandrel; e. heating said material increasing extensions to their plastic flow temperature; and, f. compressing said material increasing extensions into a thickened wall portion of said container.
Claim 17
Independent Claim
106 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thick walled portion comprising the steps of: a. forming a container core having a plurality of surface increasing extensions in the vicinity of the thick walled portion of said container; b. electrostatically applying a thermoplastic coating to said core to form a container shell with material increasing extensions; c. removing said shell from said core; d. placing said shell on a shell supporting mandrel; e. heating said material increasing extensions to their plastic flow temperature; and, f. compressing said material increasing extensions into a thickened wall portion of said container.
Claim 18
Dependent Claim
15 words
The method of claim 15, wherein said thermoplastic material is comprised of finely divided particulates.
Claim 19
Dependent Claim
14 words
The method of claim 15, wherein said thermoplastic material is applied in liquid form.
Claim 20
Independent Claim
113 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thick walled portion comprising the steps of: a. forming a container core having a plurality of surface increasing extensions in the vicinity of the thick walled portion of said container; b. electrostatically applying, fusing and cooling a finely divided thermoplastic coating material to said core to form a container shell with material increasing extensions; c. removing said shell from said core; d. placing said shell on a shell reinforcing mandrel; e. heating said material increasing extensions to their plastic flow temperature; and, f. compressing said material increasing extensions into a thickened wall portion of said container shell.
Claim 21
Independent Claim
113 words
The method of forming a unitary thermoplastic container shell having a thin walled portion and a thick walled portion comprising the steps of: a. forming a container core having a plurality of surface increasing extensions in the vicinity of the thick walled portion of said container; b. electrostatically applying, fusing and cooling a finely divided thermoplastic coating material to said core to form a container shell with material increasing extensions; c. removing said shell from said core; d. placing said shell on a shell reinforcing mandrel; e. heating said material increasing extensions to their plastic flow temperature; and, f. compressing said material increasing extensions into a thickened wall portion of said container shell.
Claim 22
Independent Claim
158 words
The method of forming a unitary thermoplastic container shell having a thin walled tubular body portion and a thicker walled dispensing nozzle portion at one end of said thin walled body portion with closure engaging means formed on said nozzle comprising the steps of: a. forming a cylindrical core having a plurality of surface increasing extensions thereon; b. electrostatically applying a thermoplastic coating, fusing, and cooling a finely divided thermoplastic material to said core to form a thin walled container shell and an end portion of said container shell; c. curing said coating; d. removing said container shell from said core; e. placing said container shell on a shell supporting mandrel; f. heating the portion of said container shell formed over said core surface increasing extensions to its plastic flow temperature; and, g. compressing the said portion of said container shell formed over said core surfaces increasing extensions into a nozzle configuration; g. forming thereon closure fastening means.
Claim 23
Independent Claim
158 words
The method of forming a unitary thermoplastic container shell having a thin walled tubular body portion and a thicker walled dispensing nozzle portion at one end of said thin walled body portion with closure engaging means formed on said nozzle comprising the steps of: a. forming a cylindrical core having a plurality of surface increasing extensions thereon; b. electrostatically applying a thermoplastic coating, fusing, and cooling a finely divided thermoplastic material to said core to form a thin walled container shell and an end portion of said container shell; c. curing said coating; d. removing said container shell from said core; e. placing said container shell on a shell supporting mandrel; f. heating the portion of said container shell formed over said core surface increasing extensions to its plastic flow temperature; and, g. compressing the said portion of said container shell formed over said core surfaces increasing extensions into a nozzle configuration; g. forming thereon closure fastening means.
Claim 24
Dependent Claim
29 words
The method of claim 19, wherein said core is formed to include means to establish a passage from the interior of said body shell portion through said end portion.
Claim 25
Dependent Claim
12 words
The method of claim 19, wherein said end portion is formed imperforate.
Claim 26
Dependent Claim
31 words
The method of claim 19, including the step of piercing said tube end shell portion to establish a passage from the interior of said body shell portion through said end portion.
Claim 27
Dependent Claim
21 words
The method of claim 19, including the step of sealing the other end of said container shell to form a container.
Claim 28
Dependent Claim
32 words
The method of claim 19, including the steps of: a. filling said container shell with a dispensable substance; and b. sealing the other end of said container shell to package said substance.
Claim 29
Dependent Claim
41 words
The method of claim 19, including the steps of: a. engaging a closure with said closure fastening means; b. filling said container shell with a dispensable substance; and, c. sealing the other end of said container shell to package said substance.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |