US4080416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making multi-layer molded padded products
Assignee: International Fabric Molders Inc
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Filing: 1976-05-03
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Granted: 1978-03-21
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Expires: 1996-05-03
Abstract
Abstract A apparatus and method for making multiple layer molded padded products comprising at least three layers, the intermediate layer comprising padding. All of the layers are formed on male molds which are cast from a single master mold, thereby reducing mold costs and assuring perfect matching of the layers. The entire area of the female mold on which the intermediate layer of padding is formed is either completely cut away or is spaced away from the male mold so that the thickness of the pad is not substantially reduced during the molding operation. The female mold is heated and acts as an oven to draw back compressed fiberfill padding and/or to cure polyurethane foam padding.
Inventors
- 👤 Jack E. Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:37
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/426; A; A41; A41C; A41C5/00; A41C5/005; B29C51/08; B29C51/082; B29C51/14; B29C51/145; B29C51/421; B29C51/425; B29L; B29L2031/00; B29L2031/48; B29L2031/4871; B29L2031/4885
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
249 words
The method of forming a breast pad having a substantially thick layer of padding disposed adjacent to a relatively thin layer of fabric, said method comprising molding said layers simultaneously on a three dimensional male mold and a female mold, the entire inner area of said female mold being spaced away from the adjacent inner area of said male mold a distance at least equal to the thickness of the molded layer of padding, so that the portions of said padding forming the inner area of said pad are not compressed during said molding by engagement with said female mold, said female mold having a peripheral portion which engages the peripheral portion of said male mold around the entire periphery of said molds, thereby compressing and deforming said layers between the engaging peripheral portions of said molds simultaneously with the molding of the inner portions of said layers to form a precise cutting edge defined by the peripheral portions of said molds, said cutting edge extending around the entire periphery of each layer of said pad, said male mold being unheated and said female mold being heated and facing upwardly to form a heated enclosure which surrounds said male mold during the molding of said layers, said layer of fabric being heated to a temperature between 300° F. and 400° F., said padding being heated to a temperature between 100° F. and 200° F., and said female mold being heated to a temperature between 150° F. and 200° F.
Claim 2
Independent Claim
249 words
The method of forming a breast pad having a substantially thick layer of padding disposed adjacent to a relatively thin layer of fabric, said method comprising molding said layers simultaneously on a three dimensional male mold and a female mold, the entire inner area of said female mold being spaced away from the adjacent inner area of said male mold a distance at least equal to the thickness of the molded layer of padding, so that the portions of said padding forming the inner area of said pad are not compressed during said molding by engagement with said female mold, said female mold having a peripheral portion which engages the peripheral portion of said male mold around the entire periphery of said molds, thereby compressing and deforming said layers between the engaging peripheral portions of said molds simultaneously with the molding of the inner portions of said layers to form a precise cutting edge defined by the peripheral portions of said molds, said cutting edge extending around the entire periphery of each layer of said pad, said male mold being unheated and said female mold being heated and facing upwardly to form a heated enclosure which surrounds said male mold during the molding of said layers, said layer of fabric being heated to a temperature between 300° F. and 400° F., said padding being heated to a temperature between 100° F. and 200° F., and said female mold being heated to a temperature between 150° F. and 200° F.
Claim 3
Dependent Claim
61 words
The method described in claim 1, in which the peripheral portion of said male and female molds are in engagement with each other across an area adjacent to said cutting edge to form a flat sewing portion of reduced thickness which extends continuously around substantially the entire periphery of the molded pad to facilitate sewing of said pad into a brassiere.
Claim 4
Dependent Claim
57 words
The method described in claim 2, in which portions of said male and female molds are in engagement with each other to form a flat shoulder portion of reduced thickness which is integral with said flat sewing portion, said shoulder portion being adapted to prevent undesirable bulk in the shoulder area of a brassiere incorporating said pad.
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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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |