US4911873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal-treated extrusion and the method of terminal treatment therefor
Assignee: Toyoda Gosei Co Ltd
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Filing: 1987-12-15
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Granted: 1990-03-27
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Expires: 2007-12-15
Abstract
Abstract A method of terminal treatment for an extrusion molding of the present invention including the steps of: applying double-sided adhesive tape to necessary positions of an extrusion molding; cutting the extrusion molding with the double-sided adhesive tape stuck thereon into a necessary length; cutting a release paper of the double-sided adhesive tape into a predetermined length less than the necessary length of the extrusion; and forming a terminal of the extrusion into a predetermined form by injection molding.
Inventors
- 👤 Yasuhisa Kuzuya
- 👤 Nobuyoshi Baba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:29
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; B29C45/14409; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C70/00; B29C70/68; B29C70/681; B29C70/683; B29C70/74; B29C70/76; B29C2793/00; B29C2793/0027; B29C48/001; B29C48/0018; B29C48/0019; B29C48/0021; B29C48/0022; B29C48/07; B29C48/12; B29C48/15; B29C48/16; B29C48/18; B29C48/22; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/302
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
235 words
A method of terminal treatment for an extrusion molding article, comprising the steps of: extrusion molding an article; applying a double-sided adhesive tape to a rear side of the extrusion molded article at a predetermined position; cutting the extrusion molded article into a predetermined length together with the adhesive tape stuck to the article; placing the extrusion molded article cut into the predetermined length in an injection molding mold, the injection molding mold including an adhesive tape accommodating groove and a projection for cutting the adhesive tape, the tape accommodating groove having a width and a depth equal to or larger than the width and the depth of the adhesive tape, respectively, and having a length a little smaller than that of the extrusion molded article, the projection being provided in the molding die at an end portion of the tape accommodating groove; cutting, with the projection, the adhesive tape stuck to the extrusion molded article and the extrusion molded article at a portion which is spaced by a small amount from the end portion of the extrusion molded article when the mold is closed to form a cavity of predetermined shape for molding a terminal for the extrusion molded article; and injecting resin into said cavity of the mold to injection mold a terminal of predetermined shape for the extrusion molded article whereby said projection prevents injected resin from flowing into the adhesive tape.
Claim 2
Independent Claim
235 words
A method of terminal treatment for an extrusion molding article, comprising the steps of: extrusion molding an article; applying a double-sided adhesive tape to a rear side of the extrusion molded article at a predetermined position; cutting the extrusion molded article into a predetermined length together with the adhesive tape stuck to the article; placing the extrusion molded article cut into the predetermined length in an injection molding mold, the injection molding mold including an adhesive tape accommodating groove and a projection for cutting the adhesive tape, the tape accommodating groove having a width and a depth equal to or larger than the width and the depth of the adhesive tape, respectively, and having a length a little smaller than that of the extrusion molded article, the projection being provided in the molding die at an end portion of the tape accommodating groove; cutting, with the projection, the adhesive tape stuck to the extrusion molded article and the extrusion molded article at a portion which is spaced by a small amount from the end portion of the extrusion molded article when the mold is closed to form a cavity of predetermined shape for molding a terminal for the extrusion molded article; and injecting resin into said cavity of the mold to injection mold a terminal of predetermined shape for the extrusion molded article whereby said projection prevents injected resin from flowing into the adhesive tape.
Claim 3
Dependent Claim
25 words
A method of terminal treatment for an extrusion, according to claim 1, in which said extrusion formed by extrusion molding is not in hollow shape.
Claim 4
Dependent Claim
24 words
A method of terminal treatment for an extrusion, according to claim 1, in which said extrusion formed by extrusion molding is in hollow shape.
Claim 5
Dependent Claim
54 words
A method of terminal treatment for an extrusion molded article according to claim 1, wherein the injection molding mold includes a correction groove having a depth smaller than that of the tape accommodating groove and a predetermined length, the correction groove extending from the projection in a direction apart from the tape accommodating groove.
Claim 6
Dependent Claim
57 words
A method of terminal treatment for an extrusion molding article according to claim 4, wherein the correction groove has a depth equal to or smaller than a value obtained by subtracting from the thickness of the adhesive agent the change in thickness of the adhesive agent of the adhesive tape which is caused by the adhesion pressure.
References Cited (Backward Citations)
US3959538A
Cited
JPS59215843A
Cited
US4619847A
Cited
US4719067A
Cited
GB2165164A
Cited
JPS6241253A
Cited
JPS62214919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |