EP0137125A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of manufacturing mouldable self-supporting panels, in particular preformed panels for motorvehicle interior finishing, and product obtained thereby
Assignee: PIANFEI IPA SpA
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Filing: 1984-07-03
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Granted: —
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Expires: 2004-07-03
Abstract
Abstract A method is disclosed which consists of overlying a mat (M) of glass fibre with a sheet (F) of a very low density expanded polymeric material, such as Moltoprene, of spraying said sheet with an expansible two-component resin (E), isocyanate polyol, and of subjecting the whole to pressing in an embossed surface mould which forms the exposed surface of the finished product.
Inventors
- 👤 Attilio Gaggero
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 15:55
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0053; B29C44/00; B29C44/02; B29C44/10; B29C44/20; B29C44/32; B29C44/321; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29C70/48; B29K; B29K2071/00; B29K2075/00; B29K2105/00; B29K2105/04; B29K2105/045; B29K2105/25; B29K2105/253; B29K2105/256; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3055
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A method of manufacturing mouldable self-supporting panels, in particular preformed panels for motorvehicle interior finishing, characterised in that it comprises the steps of overlying a glass fibre mat with a sheet of a very low density expanded polymeric material of the open cell type, cutting the mat and sheet into pieces, depositing over said sheet pieces, as by spray application, a layer of a multi-component expansible resin, and subjecting the resulting product to a pressing step in a heated embossed surface mould to directly emboss and/or microemboss the expanded polymeric material sheet surface to be left exposed with a selected pattern.
Claim 2
Independent Claim
101 words
A method of manufacturing mouldable self-supporting panels, in particular preformed panels for motorvehicle interior finishing, characterised in that it comprises the steps of overlying a glass fibre mat with a sheet of a very low density expanded polymeric material of the open cell type, cutting the mat and sheet into pieces, depositing over said sheet pieces, as by spray application, a layer of a multi-component expansible resin, and subjecting the resulting product to a pressing step in a heated embossed surface mould to directly emboss and/or microemboss the expanded polymeric material sheet surface to be left exposed with a selected pattern.
Claim 3
Dependent Claim
24 words
A method according to Claim 1, wherein the pressing action results from the volume increase consequent to the expansion reaction of the two-component resin.
Claim 4
Independent Claim
22 words
A method according to Claims 1 and 2, wherein said very low density expanded material comprises a polyether sheet known as "Moltoprene".
Claim 5
Independent Claim
34 words
A method according to Claims 1 to 3, wherein the glass fibre mat is of the unifilar type and has a weight per unit .surface area in the 250 to 350 gJm 2 range.
Claim 6
Independent Claim
29 words
A method according to the preceding claims, wherein the sheet of expanded material overlaid to the glass fibre mat has a thickness in the 2 to 4 mm range.
Claim 7
Independent Claim
31 words
A method according to the preceding claims, wherein the expansible multi-component resin comprises a two-component polyurethane having a ratio by weight of polyol to isocyanate in the 100 to 120 range.
Claim 8
Independent Claim
27 words
A method according to the preceding claims, wherein at least one of the expansible resin components contains dyeing pigments dispersed therein for bulk dyeing the finished product.
Claim 9
Independent Claim
22 words
A method according to any of Claims 1-7, characterized in that at least one of said expansible resin components contains a retarder.
Claim 10
Dependent Claim
26 words
A method according to Claim 8, wherein the retarder additivated to the expansible resin components acts with retardation times in the 1 to 3 minutes range.
Claim 11
Independent Claim
16 words
A method according to the preceding claims, wherein the mould is heated to 80 0 .
Claim 12
Dependent Claim
48 words
A product obtained with the method according to Claims 1 to 10, characterized in that it comprises a glass fibre support wherethrough a very low density expanded material is dispersed to form a microporous exposed surface which is embossed and/or microembossed by direct moulding with any selected patterns.
Claim 13
Dependent Claim
25 words
A product according to Claim 11, characterized in that it has a weight per unit surface area in the 600 to 800 g/m 2 range.
Claim 14
Dependent Claim
25 words
A product according to Claims 11 and 12, characterized in that it forms a preformed panel, in particular a preformed panel for motorvehicle interior finishing.
References Cited (Backward Citations)
No citation records indexed.
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