Patent US1814910A successfully refreshed from Google Patents.
Patent US4952358A successfully refreshed from Google Patents.
US4952358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing an interior member for vehicles
Assignee: Inoac Corp
•
Filing: 1989-05-02
•
Granted: 1990-08-28
•
Expires: 2009-05-02
Abstract
Abstract A method for manufacturing an interior member for vehicles comprises the steps of laying a surface layer in a cavity of a mold, placing a reinforcing fiber mat onto the surface layer, compressing the surface layer and the reinforcing fiber mat in the mold, injecting raw material for obtaining a polyisocyanurate and demolding an integrally-molded interior member from the mold after the completion of a reaction of the raw material. The raw material comprises a trimerization catalyst, a polyol and a polyisocyanate. The amount of raw material is determined so that the density of the obtained polyisocyanurate is 1.2 to 1.9 times as much as the density of the same polyisocyanurate in its free foaming state.
Inventors
- 👤 Toyohiko Okina
- 👤 Hiroshi Goto
- 👤 Fumio Kousaka
- 👤 Akinori Teranishi
- 👤 Satoshi Kawabata
- 👤 Tetsuo Ohyama
- 👤 Makoto Ohya
- 👤 Norio Kozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:42
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/04; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1209; B29C44/34; B29C44/36; B29C44/38; B29C44/42; B29C44/14; B29C67/00; B29C67/24; B29C67/246; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B60R13/00; B60R13/02; B60R13/0256; Y; Y10; Y10S; Y10S521/00; Y10S521/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31547; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/335; Y10T442/3358; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/623; Y10T442/647; Y10T442/652
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
145 words
A method for manufacturing an interior member for vehicles, comprising steps of: (a) laying a surface layer in a cavity of a mold; (b) placing a reinforcing fiber mat onto said surface layer; (c) compressing said surface layer and said reinforcing fiber mat in the mold; (d) injecting raw material for obtaining a polyisocyanurate into the cavity of the mold, said raw material comprising a trimerization catalyst, a polyol and a polyisocyanate, the amount of said raw material being so determined that the density of the obtained polyisocyanurate is 1.2 to 1.9 times as much as the density of the same polyisocyanurate in its free foaming state, the amount of polyisocyanate used for obtaining said polyisocyanurate being from 250 to 3,000 on the isocyanate index; and (e) demolding an integrally-molded interior member from the mold after the completion of the reaction of the raw material.
Claim 2
Independent Claim
145 words
A method for manufacturing an interior member for vehicles, comprising steps of: (a) laying a surface layer in a cavity of a mold; (b) placing a reinforcing fiber mat onto said surface layer; (c) compressing said surface layer and said reinforcing fiber mat in the mold; (d) injecting raw material for obtaining a polyisocyanurate into the cavity of the mold, said raw material comprising a trimerization catalyst, a polyol and a polyisocyanate, the amount of said raw material being so determined that the density of the obtained polyisocyanurate is 1.2 to 1.9 times as much as the density of the same polyisocyanurate in its free foaming state, the amount of polyisocyanate used for obtaining said polyisocyanurate being from 250 to 3,000 on the isocyanate index; and (e) demolding an integrally-molded interior member from the mold after the completion of the reaction of the raw material.
Claim 3
Dependent Claim
31 words
A method as claimed in claim 1, wherein said reinforcing fiber mat used in step (b) comprises glass-fibers averaging 15 through 20 microns in diameter and over 50 mm in length.
Claim 4
Dependent Claim
41 words
A method as claimed in claim 1 wherein said trimerization catalyst used in step (d) is at least one compound selected from the group consisting of a carboxylate, a tertiary amine, an inorganic salt, a phosphine and a quaternary ammonium salt.
Claim 5
Dependent Claim
26 words
A method as claimed in claim 3, wherein said trimerization catalyst is an alkali metal salt of a carboxylic acid containing 1 to 18 carbon atoms.
Claim 6
Dependent Claim
19 words
A method as claimed in claim 1, wherein dibutyltin dilaurate is used in step (d) as a subsidiary catalyst.
Claim 7
Dependent Claim
38 words
A method as claimed in claim 1, wherein said polyol used in step (d) is at least one compound selected from the group consisting of ethylene glycol, diethylene glycol, neopentyl glycol, 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, glycerol, trimethylolpropane and pentaerythritol.
Claim 8
Dependent Claim
22 words
A method as claimed in claim 1, wherein said polyol is selected from the group consisting of polyester polyol and polyether polyol.
Claim 9
Dependent Claim
35 words
A method as claimed in claim 1, wherein said polyisocyanate used in step (d) is at least one compound selected from the group consisting of an aliphatic polyisocyanate, an alicyclic polyisocyanate and an aromatic polyisocyanate.
Claim 10
Dependent Claim
13 words
A method as claimed in claim 8, wherein said aliphatic polyisocyanate is hexamethylenediisocyanate.
Claim 11
Dependent Claim
13 words
A method as claimed in claim 8, wherein said alicyclic polyisocyanate is isophoronediisocyanate.
Claim 12
Dependent Claim
23 words
A method as claimed in claim 8, wherein said aromatic polyisocyanate is selected from the group consisting of tolylenediisocyanate, diphenylmethanedisocyanate, naphthylenediisocyanate and xylilenediisocyanate.
Claim 13
Dependent Claim
20 words
A method, as claimed in claim 1, wherein said mold is pre-heated to between 60° and 80° C. step (a).
Claim 14
Dependent Claim
41 words
A method as claimed in claim 1, wherein said polyol and said polyisocyanate used in step (d) are separately led and are shot into each other under high pressure at an inlet of said mold so as to be injected simultaneously.
Claim 15
Dependent Claim
41 words
A method as claimed in claim 1, wherein said mold is a closed mold and the pressure of said closed mold is maintained within the range of from 250 to 350 mmHg during injection of said polyisocyanurate material in step (d).
Claim 16
Dependent Claim
19 words
A method as claimed in claim 1, wherein an adhesive is applied on said surface layer in step (a).
Claim 17
Dependent Claim
80 words
A method as claimed in claim 1, wherein said mold comprises a lower mold half having a lower mold half cavity face and an upper mold half having an upper mold half cavity face, said lower mold half is sealed with said upper mold half cavity face to form a cavity in which said interior member is shaped after the injection of said polyisocyanurate material in step (d) so as to complete the reaction of said material in step (e).
References Cited (Backward Citations)
US2959511A
Cited
US2978376A
Cited
US3137750A
Cited
US3446686A
Cited
US3989781A
Cited
US3817806A
Cited
US3993608A
Cited
US4073997A
Cited
US4052241A
Cited
US4123488A
Cited
US4201823A
Cited
US4201612A
Cited
US4270944A
Cited
US4374229A
Cited
US4692291A
Cited
FR2486872A1
Cited
JPS5729422A
Cited
JPS5729436A
Cited
US4477405A
Cited
US4435349A
Cited
FR2545039A1
Cited
US4666544A
Cited
US4610835A
Cited
US4584325A
Cited
US4810444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |