EP0263798A2
Expired / Lapsed
EP
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Method for the manufacture of a padded element, particularly a seat cushion
Assignee: Sepi SpA
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Filing: 1987-10-06
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Granted: —
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Expires: 2007-10-06
Abstract
Abstract In the manufacture of a padded element, such as a seat cushion for motor vehicles, the cushion cover (3) (of cloth, leather, synthetic material or the like) is applied to the padding (2) (usually of expanded plastics material) after having been formed to the shape of the surface of the padding (2) by means of pressing in a metal die and the simultaneous application of steam. The flow of steam reaches the cover by passing through the lower part (12) of the die and emerging from passages (17) provided in the wall which is in contact with the material. The steam used during the operation of pressing of the material is drawn from a reservoir (24) of pressurised steam, whose chamber is not in direct communication with the passages and whose body is in a thermally conducting relationship with the wall of the die.
Inventors
- 👤 Roberto Bracesco
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/02; B29C33/04; B29C33/048; B29C51/00; B29C51/26; B29C51/42; B29C63/00; B29C63/02; B29C63/025; B29C65/00; B29C65/02; B29C65/10; B29C65/48; B29C65/4805; B29C65/483; B29C65/485; B29C65/52; B29C65/522; B29C65/78; B29C65/7841; B29C65/7847; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/301; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5326; B29C66/70; B29C66/72; B29C66/727; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B68; B68G; B68G7/00; B68G7/05; B29L; B29L2031/00; B29L2031/58; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
154 words
A method for the manufacture of a padded element, particularly a seat cushion, in which a cover (3) is applied to a padding (2) after having been formed into the shape of the surface of the padding (2) by means of pressing in a die and the simultaneous application of a flow of steam which passes through the lower part (12) of the die and reaches the cover through passages (17) arranged in the upper wall (16) of the lower part (12) of the die, characterised in that the steam used during the stage of pressing of the cover is brought to the passages (17) formed in the upper wall (16) by being drawn from a reservoir (24) of pressurised steam whose chamber (25) is not in direct communication with the passages and whose body is in a thermally conducting relationship with the upper wall (16) of the lower part (12) of the die.
Claim 2
Independent Claim
154 words
A method for the manufacture of a padded element, particularly a seat cushion, in which a cover (3) is applied to a padding (2) after having been formed into the shape of the surface of the padding (2) by means of pressing in a die and the simultaneous application of a flow of steam which passes through the lower part (12) of the die and reaches the cover through passages (17) arranged in the upper wall (16) of the lower part (12) of the die, characterised in that the steam used during the stage of pressing of the cover is brought to the passages (17) formed in the upper wall (16) by being drawn from a reservoir (24) of pressurised steam whose chamber (25) is not in direct communication with the passages and whose body is in a thermally conducting relationship with the upper wall (16) of the lower part (12) of the die.
Claim 3
Dependent Claim
101 words
A method according to Claim 1, in which the formed cover (3) is applied to the padding (2) by gluing with a two-component adhesive and by pressing the padding (2) against the cover and against the upper wall (16) of the lower part (12) of the die, characterised in that the first component of the adhesive is deposited on the padding before it is pressed onto the cover, and in that the second component of the adhesive is applied during the pressing stage by being brought to the padding (2) through the passages (17) and through the pores of the cover.
Claim 4
Dependent Claim
68 words
A method according to Claim 2, in which the second component is constituted by a mixture of water and a catalyst, characterised in that it is applied by drawing a flow of steam from the pressurised steam reservoir (24) and introducing the catalyst into the flow in a region upstream of the passages (17) formed in the upper wall (16) of the lower part (12) of the die.
Claim 5
Dependent Claim
166 words
Apparatus for use in the manufacture of a padded element, particularly a seat cushion, comprising a die (11) for pressure forming a cover (3) intended to be applied to a padding (2) into the shape of the surface of the padding, the die having an upper part (13) and a lower part (12), at least the lower part (12) of the die having passages (17) formed in the wall (16) intended to come into contact with the cover, and means being provided for the supply of a flow of steam to the passages (17) during the stage of pressing of the cover, so as to enable the cover to be formed into the required shape, characterised in that the means for supplying the steam comprise a reservoir of pressurised steam (24) whose chamber (25) is not in direct communication with the passages (17) formed in the wall of the die and whose body is in a thermally conducting relationship with the wall (16) of the die.
Claim 6
Dependent Claim
166 words
Apparatus for use in the manufacture of a padded element, particularly a seat cushion, comprising a die (11) for pressure forming a cover (3) intended to be applied to a padding (2) into the shape of the surface of the padding, the die having an upper part (13) and a lower part (12), at least the lower part (12) of the die having passages (17) formed in the wall (16) intended to come into contact with the cover, and means being provided for the supply of a flow of steam to the passages (17) during the stage of pressing of the cover, so as to enable the cover to be formed into the required shape, characterised in that the means for supplying the steam comprise a reservoir of pressurised steam (24) whose chamber (25) is not in direct communication with the passages (17) formed in the wall of the die and whose body is in a thermally conducting relationship with the wall (16) of the die.
Claim 7
Dependent Claim
41 words
Apparatus according to Claim 4, characterised in that the wall of the die defines an auxiliary chamber (18) which is connected to the chamber (25) of the pressurised steam reservoir through a duct (27, 19) provided with a shut-off valve (28).
Claim 8
Dependent Claim
33 words
A method according to Claim 5, characterised in that the auxiliary chamber (18) communicates with a vacuum source (21) through a duct (19, 20) in which a further shut-off valve (22) is interposed.
Claim 9
Dependent Claim
58 words
Apparatus according to Claim 4, characterised in that the pressurised steam reservoir (24) has an inlet (31) connected to a source of pressurised steam (32) through a duct (33), the upper part (13) of the die having an internal passage (34) which is interposed in the connection between the source of pressurised steam (32) and the duct (33).
Claim 10
Dependent Claim
79 words
Apparatus according to Claim 4, characterised in that the upper wall (16) and the body of the pressurised steam reservoir (24) are in one piece, the upper wall (26) of the reservoir (24) being arranged below and spaced from the upper wall (16), and the chamber (25) of the reservoir being in the form of an annular chamber surrounding a central passage (19) which in turn communicates with the duct (27) in which the shut-off valve (28) is interposed.
Claim 11
Dependent Claim
64 words
Apparatus according to Claim 5, characterised is that a container (37) is provided for the catalyst of the adhesive which is used for gluing the padding (2) to the inside of the material (3), the container (37) communicating with the duct (27) connecting the reservoir (24) to the auxiliary chamber (18) through a further duct (38) in which a supply pump (39) is interposed.
Claim 12
Dependent Claim
33 words
Apparatus according to claim 9, characterised in that a non-return valve (40) is interposed in the duct (38), downstream of the pump (39), to prevent the steam from flowing towards the container (37).
References Cited (Backward Citations)
No citation records indexed.
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