GB2111907A - Substrate for vehicle trim - Google Patents
Substrate for vehicle trim Download PDFInfo
- Publication number
- GB2111907A GB2111907A GB08229256A GB8229256A GB2111907A GB 2111907 A GB2111907 A GB 2111907A GB 08229256 A GB08229256 A GB 08229256A GB 8229256 A GB8229256 A GB 8229256A GB 2111907 A GB2111907 A GB 2111907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- substrate
- vehicle trim
- curing agent
- heat curing
- surface paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 44
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 239000011162 core material Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 238000013007 heat curing Methods 0.000 claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000005871 repellent Substances 0.000 abstract description 3
- 230000002940 repellent Effects 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0892—Insulating elements, e.g. for sound insulation for humidity insulation
Landscapes
- Laminated Bodies (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
A substrate for vehicle trim comprises surface paper sheets and a core material bonded to each other by thermoplastic adhesives impregnated with a heat curing agent comprising a urethane type prepolymer which cures at a temperature lower than the melting point of the thermoplastic adhesives. Impregnation of the heat curing agent can improve the mechanical strength of the substrate, prevent the deformation of the substrate even in long use and, particularly, render the substrate water- repellent thus being free from softening due to water or moisture content.
Description
SPECIFICATION
Substrate for vehicle trim
A substrate for vehicle trim is known wherein two flat surface paper sheets have a paper sheet material core interposed between them and bonded to each other by thermoplastic adhesive to form a substrate.
Upon using such a substrate for vehicle trim for vehicle ceilings, a cover material, for example, made of cloth or polyvinyl chloride resin is attached by means of a heat fusible adhesive sheet on the side of the substrate that corresponds to the inner side of the vehicle coachwork.
However, such a substrate for vehicle trim is not satisfactory in that it results in deformation during long use since it lacks shape retaining performance and has only insufficient bending strength, as well as the fact that it readily softens to deform when placed under damp conditions since it is made of paper.
An object of this invention is to provide a substrate for vehicle trim which has no deformation and retains the initial shape even after long use.
Another object to this invention is to provide a substrate for vehicle trim which is water or moisture repellent.
According to the present invention a substrate for vehicle trim comprises surface paper sheets and a core material bonded to each other by thermoplastic adhesives, the substrate being impregnated with a heat curing agent that cures at a temperature lower than the melting temperature of the adhesives.
The invention will now be described further, by way of example, with reference to the accompanying drawings, in which:
Figure lisa cross-section of a substrate for vehicle trim according to the invention; and
Figure 2 is a cross-section of another embodiment of substrate.
As shown in Figure 1, a substrate 6 for vehicle trim comprises surface paper sheets 1 and 2 and a core material 3 bonded thereto by thermoplastic adhesives P; a heat curing agent, for example, of urethane type prepolymer which softens when heated at a temperature lower than the melting point of the thermoplastic adhesives P is impregnated into the surface paper sheets 1 and 2, the core material 3 or all of them, subsequently being heated. The urethane prepolymer thus impregnated cures at the heating temperature and thereby improves the mechanical strength of the substrate 6 drastically, whereby the substrate can be kept from deformation. In addition, since the substrate 6 is rendered water-repellent, it can be free from deformation due to water or moisture content.
Furthermore, since the curing temperature of the urethane prepolymer is lower than the melting point of the thermoplastic adhesives P, the adhesives P do not melt under the heating for the cure of the urethane prepolymer, whereby the initial shape of the substrate can be retained, neither with the positional displacement between the surface paper sheets 1 and 2 and the core material 3 nor the deformation in the corrugated shape of the core material 3.
Another embodiment of the substrate for vehicle trim is shown in Figure 2 wherein the substrate 6 is bonded at the surface thereof with a cover material such as of cloth and then heat-molded into a predetermined shape. The substrate 6 comprises two opposing surface paper sheets 7 and 8 and a core material 9 made of paper bonded to them by thermoplastic adhesives P. A urethane type prepolymer A as the constituent of heat curing agent is uniformly impregnated from the surface of the surface paper sheet 7 of the substrate 6 by a well-known step, for example, dipping or spraying.
A cover material 10 is laid over the surface paper sheet 7. The substrate 6 and the cover material 10 are put between upper and lower dies 11 and 12 for molding the substrate 6 in their overlaid state. The upper and lower dies 11, 12 are formed with a plurality of steam vent apertures 13, 14, through which steams are passed upon pressing of the substrate 6 and the cover material 10 to exert heating on the urethane prepolymer A. The urethane prepolymer A is heat-cured by the steam heating and thereby causes the cover material 10 to be bonded with the surface paper sheet 7. The urethane prepolymer A used herein essentially consists, for instance, of 70% - 90% by weight of M.D.I. (dipheny Imethane diisocyanate) and 30% - 10% by weight of polyether and has a viscosity of 8000 - 10000 c.p.s.
The urethane prepolymer is applied in an amount of 100 - 150 g/cm2 and heated for 3 - 5 min.
In the embodiment of the substrate formed as above, since the urethane prepolymer A is heatcured at a temperature lower than the melting point of the adhesives for the surface paper sheets 7 and 8 and the core material 9, the substrate 6 for vehicle trim can be press-molded into a predetermined shape with no displacement in each of the corrugating pitches of the core material 9. Further, since the substrate 6 is cured in the state where the urethane prepolymer A is impregnated therein, it has a water repellency and a strong shape-retaining nature.
Furthermore, since the cover material 10 is bonded to the surface paper sheet 7 by the urethane prepolymer A it can be press-fitted thereto at the time of molding the substrate 6 without using additional adhesives to thereby enable efficient work for manufacture.
In the above embodiment, the urethane prepolymer A can be impreganted uniformly to the entire portion of the surface paper sheets 7 and 8 and the core material 9 of the substrate 6, as well as it may be deposited on the surface paper sheet 7 by spraying and then impregnated spontaneously with the elapse of time. A water-soluble urethane material essentially consisting of polyether or polyester, X.D.I. (Xylene diisocyanate), non-ionic emulsifier or the like can be applied to the cover material 10 in this embodiment.
As stated above, since a heat curing agent that cures at a temperature lower than the melting point of the adhesives used for the surface paper sheets and the core material of the substrate for vehicle trim is impregnated into the substrate, the substrate can be heat-molded into a predetermined shape while maintaining the desired strength and the light weight set to the substrate. Furthermore, quite novel advantages such as provision of water repellency and the tough shape-retention to the substrate for vehicle interior material can be obtained additionally by the presence of the heat curing agent.
Claims (4)
1. A substrate for vehicle trim comprising surface paper sheets and a core material bonded to each other by thermoplastic adhesives, the substrate being impregnated with a heat curing agent that cures at a temperature lower than the melting temperature of the adhesives.
2. A substrate as claimed in claim 1, in which the heat curing agent comprises an urethane type prepolymer.
3. A substrate as claimed in claim 1, in which the heat curing agent comprises an urethane type prepolymer essentially consisting of M.D.I. and polyether.
4. A substrate for vehicle trim constructed and arranged substantially as herein described with reference to and as illustrated in either of the Figures of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56198196A JPS5898240A (en) | 1981-12-09 | 1981-12-09 | Corrugated cardboard material for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2111907A true GB2111907A (en) | 1983-07-13 |
| GB2111907B GB2111907B (en) | 1985-04-11 |
Family
ID=16387063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08229256A Expired GB2111907B (en) | 1981-12-09 | 1982-10-13 | Substrate for vehicle trim |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5898240A (en) |
| AU (1) | AU558253B2 (en) |
| DE (1) | DE3239849A1 (en) |
| GB (1) | GB2111907B (en) |
| MX (1) | MX163994B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391593A2 (en) * | 1989-04-05 | 1990-10-10 | Honshu Seishi Kabushiki Kaisha | Method of producing corrugated fiberboard article |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1021701B (en) * | 1953-09-14 | 1957-12-27 | Badisch Wuertt Wellpappen Fabr | Process for the production of corrugated cardboard impermeable to water vapor and / or aroma |
| DE2212097A1 (en) * | 1972-03-13 | 1973-10-04 | Champion Paper Co Ltd | Paper overlaid panel - in which polyisocyanate impregnated kraft paper is laminated to a substrate |
| DE2747739A1 (en) * | 1977-10-25 | 1979-04-26 | Ernst Pelz | Laminated shaped cladding component - has intermediate layers enclosing hollow chambers between thin supporting layers |
| FR2470679A1 (en) * | 1979-11-30 | 1981-06-12 | Matec Holding | Self supporting structural panel - with open celled carrier layer enclosed in fibre mats with resin binder |
-
1981
- 1981-12-09 JP JP56198196A patent/JPS5898240A/en active Pending
-
1982
- 1982-10-13 GB GB08229256A patent/GB2111907B/en not_active Expired
- 1982-10-22 AU AU89688/82A patent/AU558253B2/en not_active Ceased
- 1982-10-27 DE DE19823239849 patent/DE3239849A1/en active Granted
- 1982-12-09 MX MX195535A patent/MX163994B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391593A2 (en) * | 1989-04-05 | 1990-10-10 | Honshu Seishi Kabushiki Kaisha | Method of producing corrugated fiberboard article |
| EP0391593A3 (en) * | 1989-04-05 | 1991-12-18 | Honshu Seishi Kabushiki Kaisha | Method of producing corrugated fiberboard article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5898240A (en) | 1983-06-11 |
| GB2111907B (en) | 1985-04-11 |
| AU8968882A (en) | 1983-06-16 |
| AU558253B2 (en) | 1987-01-22 |
| DE3239849A1 (en) | 1983-06-16 |
| DE3239849C2 (en) | 1992-11-26 |
| MX163994B (en) | 1992-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19931013 |