CA1319234C - Production method relating to a lining part integrally with its fire-proof barrier and amenity items equipped with lining parts thus obtained - Google Patents
Production method relating to a lining part integrally with its fire-proof barrier and amenity items equipped with lining parts thus obtainedInfo
- Publication number
- CA1319234C CA1319234C CA000576869A CA576869A CA1319234C CA 1319234 C CA1319234 C CA 1319234C CA 000576869 A CA000576869 A CA 000576869A CA 576869 A CA576869 A CA 576869A CA 1319234 C CA1319234 C CA 1319234C
- Authority
- CA
- Canada
- Prior art keywords
- lining
- fire
- mould
- elastic cloth
- constituted
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14155—Positioning or centering articles in the mould using vacuum or suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0809—Fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2713/00—Use of textile products or fabrics for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
- B29K2995/0016—Non-flammable or resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0046—Elastic
Abstract
ABSTRACT OF THE DISCLOSURE
This invention relates to a method for producing a lining part (16) integrally with a fire-proof barrier which envelops it, the said lining part being made of inflammable polymeric foam and is obtained by moulding.
The method as claimed in the invention is characterized in that it comprises the following stages :
i) embodiment of two thin ductile and impervious sheets by coating the internal side with a shirred fabric highly-resistant to fire by means of an elastic polymeric compound (15), especially an elastomer, which comprises a filler designed to make it flame-resistant and which is compatible with the material from which the lining part is made of, ii) coating of the walls of the mould (1) used for moulding the lining part (16) by means of thin ductile impervious sheets (11, 12) thus coated, iii) plating of these impervious coating sheets against the corresponding walls of the mould by means of suction, iv) injection of the polymeric material (17) comprising the lining inside the mould.
To be applied to the embodiment of industrial transport amenity articles, especially in the aircraft industry.
This invention relates to a method for producing a lining part (16) integrally with a fire-proof barrier which envelops it, the said lining part being made of inflammable polymeric foam and is obtained by moulding.
The method as claimed in the invention is characterized in that it comprises the following stages :
i) embodiment of two thin ductile and impervious sheets by coating the internal side with a shirred fabric highly-resistant to fire by means of an elastic polymeric compound (15), especially an elastomer, which comprises a filler designed to make it flame-resistant and which is compatible with the material from which the lining part is made of, ii) coating of the walls of the mould (1) used for moulding the lining part (16) by means of thin ductile impervious sheets (11, 12) thus coated, iii) plating of these impervious coating sheets against the corresponding walls of the mould by means of suction, iv) injection of the polymeric material (17) comprising the lining inside the mould.
To be applied to the embodiment of industrial transport amenity articles, especially in the aircraft industry.
Description
FIELD OF ~HE INVENTION
The present invention relates to a method for producing fire-proof lining parts and designed for amenity items, such as seats for public transport vehicles and more particularly for planes, armrests, head rests, seating units, damping terminals or analogous devices and items equipped with the lining parts thus obtained.
o BACKGROUND OF THE INVENTION
It is already known how to provide the frame of vehicle seats with a shock absorber lining part whose shape is adapted to that of the seat and which is made of foams comprising a grille cloth external coating.
Moreover, it is now customary for this purpose to use polyurethane foams which, from amongst the shock absorber polymers currently used in industry, are probably the most suitable materials as regards their mechanical properties and the cost price.
However, given the fact that unfortunately 2s polyurethane foams are very sensitive to temperature (because their urethane groups easily suffer pyrolysis and their aliphatic bonds are thermally oxidizable, the decomposition of these foams already occurs at about 250 C), it is common practice to protect against fire by providing a polyurethane lining part by means of a fireproof barrier constituted by a flame-retardant, and thus fireproof, lining or cover, inserted between the lining part and the grille 2 13~9234 cloth.
Up until now, two types of the following linkages are known to be used between the fireproof layer and the grille cloth :
s 1. - loose or flaccid linkage, without any mutual adherence, which firstly requires an additional construction for the seat coverer who needs to separately secure the fire-proof lining or cover to the lininq 0 part and frame and then to fix the covering and ,secondly, the relative displacement or movement between the lining and the coating with the formation of unaesthetic folds ;
in addition, the presence of seams in the fireproof lining is another negative aspect of this solution. ;
2. - intimate bonding by means of bonding agents (glues), which, apart from reducing the flexibility of the entire unit, exhibit fire-resistance properties which are unsatisfactory and which seriously compromise the protective function of the fire-proof lining.
However, even if solution 2 is preferable to 25 the first in that it ellminates the aforesaid drawbacks due to loose bonding of the lining with regard to the qrille cloth, the second sol~tion presents drawbacks identical to those of the first solution as regards the lining.
The present invention is therefore seeking to provide a method enabling an intimate bonding to be obtained between the fire-proof lining and the lining part, so that the latter and its fire-proof protection are like a monolithic structure, 1319~3~
obtained without any glue or seam.
SUMMARY OF THE INVENTION
The aim of the present invention is to provide a production method relating to a lining part integrally with a fire-proof barrier surrounding it, the said lining part being made of an inflammable polymer foam and is obtained by moulding and is intended for any amenity item, such as a seat, armrest, headrest, seating unit, shock absorber terminal or an analogous device, the said method being characterized in that it comprises the following stages :
i) embodiment of thin ductile impervious sheets by coating the internal side with a shirred fabric exhibiting a high degree of resistance to flames means of an elastic polymer material, especially elastomer, which includes a filler designed to render it fire-retardant and is compatible with the material constituted by the lining part, ii) covering of the walls of the mould used for moulding the lining part by means of the ductile impervlous sheets thus coated, iii) cladding these lmpervious coating sheets against the corresponding walls of the mould, by means of suction, lv) injection of the polymer material constituted by the lining part inside the mould.
As regards the garnishing material used within the scope of the present invention, this preferably consists of polyurethane foam whose expansion occurs inside the mould following the 4 ~3~3~
aforesaid injection operation at iv).
The fact that the fire-proof barrier (namely, the aforesaid shirred fabric) is integrally embodied with the lining part offers the advantage of eliminating wear and tear of the barrier, this being due to the relative displacement occurring in embodiments of the previous Art, and which does not occur with the articles embodied as claimed in the invention 0 because the intimate bonding between the fire-proof barrier and the polyurethane foam results in the coated fire-proof fabric undergoing the same deformations as those of the lining part.
According to one mode of embodiment favorable to the invention, the said shirred fabric consists of polyaramid fibers and preoxidized fibers which are woven together, specially by knitting, so that they provide the fabric with a multidirectional elasticity.
According to another mode of embodiment favorable to the method as claimed in the invention, the fire-protected lining part thus obtained comprlses a grille cloth which is preferably made of the said multidirectional elastic protectlve fabrlc.
Apart from the preceding dispositions, the invention still includes other dispositions~
which will be specified in the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be more readily understood by referring to the following 131923~
additlonal description, which relates to the annexed drawings in which :
figure 1 is a diagrammatic view illustrating the working principle of the mould used for implementing the method as claimed in the invention ;
figures 2, 3 and 4 are also diagrammatic views of the various stages of this method ; and figure 5 is again another diagrammatic 0 view of an amenity article (cushion) obtained by means of the method as claimed in the invention.
However, it should be properly understood that these drawings and the corresponding descriptive parts are given solely as an example illustrating the aim of the invention and consequently in no way limit the possibilities of this invention.
DETAILED DE~CRIPTION OF THE PREFERRED EM~ODIMENT~
The working principle of a mould likely to be used within the context of the present invention can be more readily understood by referring to figure 1 where a mould 1 is shown in two parts defined by the numerical references 2 and 3. In each part of the mould, a large number of suction pipes are provided, uniformly distributed such as 4'a to 4'_ and 4"a 4"S, connected to a main pipe S and 6 respectively, which are connected to a suction pump 7 and 8 respectively.
Each of these pumps 7 and 8 is intended to clad, against the internal side of the corresponding mould portion 2 and 3,a shee~ 11 6 13~923~
and 12 ~visible on figure 2) by means of the suction produced by the aforesaid pumps (cf. also figure 3).
The sheets 11 and 12 are thin compound impervious ductile sheets, each of which is obtained from a thin fire-proof shirred fabric 13 and 14, respectively, which is coated on one side - namely the internal side intended to come into intimate contact with the lining part, by becoming integral with the latter - by means of an elastic polymer compound, preferably an elastomer, which is firstly rendered fireproof by incorporating a suitable filler (recognised by technicians) and which is stretched over each thin sheet of fabric 13 and 14, in the form also of a thin layer 15.
Once this preliminary stage for preparing the thin ductile impervious sheets 11 and 12 is ended, this involves :
- positioning them in each of the portions 2 and 3 of the mould 1, as shown on fiqure 2, - cladding them against the internal face 9 and 10 of the corresponding mould portion 2 and 3, respectively ,by activating the suction pumps 7 and 8 ~cf. figure 3), - closlng the mould 1 by superimposing the portion 2 onto the portion 3 of the mould whilst maintaining the suction produced by the pumps so that the composite sheets 11 and 12 are always intimately cladded against the aforesaid internal faces 9 and 10 ~cf. figure 4), - injecting a suitable polymer material inside 7 13~3l~
the previously prepared rnould 1 in order to receive this material with the aid of an injection device (shown diagrammatically on figure l):the chosen lining polymer material may consist of polyurethane (PU) which is sucked in its liquid state from a vessel 17 by a pump 18 cooperating with a blending device 19 disposed downstream of the pump 18 immediately before the injection nozzle 20 (cf. also figure 0 4) : the blending device 19 has two inputs 21 and 22, the first being for the polyurethane and the second for additives, especially consisting of accelerators, intended to favor cross-linkage of the polyurethane derived from lS the vessel 17;
- extracting the moulded product - after expansion of the polyurethane (cf. the numerical reference on figure 4), which is naturally linked to the composite sheets 11 and 12 by virtue of the compatlbility between the polyurethane and the flame-retarded elastomer coated on each thin shirred fabric sheet 13 and 14 - such as the cushion 23 shown diagrammatically on figure 5, in order to carry out the required finishlng operations, such as the cutting of the portions of the composite sheets exceeding the spatial requirement limits of the moulded product and welding of this sheets along the circumference of the cut.
By means of the method as claimed in the invention, it is thus possible to obtain amenity items, such as seats, headrests, armrests, seating units, damping terminals or other items, the lining of these items being embodied integrally 8 ~ 3~ ~23~
~intimately llnked) with the fireproof barrler constltuted by the aforesald composlte sheet whose supporting shirred fabrlc of the coated elastomer can preferably also play the role of an appearance cover, itself also thus belnq lntegrated w}th the llnlng.
Of course, it is possible to provide the product obtained by means of the method as claimed in the invention with a separate appearance cover o without, however, departing from the context of the lnvention.
By way of example in no way restrictive, here are some of the materlals which can be used I to implement the method as claimed in the inventlon :
- as regards the ductlle shlrred fabric, it would be an advantage for this to be made of a "PANOTEX"* jersey fabric comprised of "PANOX P
505"*fibers and aramid, - as regards the impervious linking coating lntended to be coated on one face of the sald ductile fabric, it would be an advantage for thls to be a flame-retarding polyurethane based mixture (flame-retardlng agents possibly 2s includlng, amongst other elements, a halogen compound) ; the thickness of the impervious film is preferably between l and 8/lOO mm, half of which ls retrleved - after absorptlon - on the coated slde of the fabric ;
- as regards the cellular polyurethane, this ls a bi-constituent llquid, the polyalcohol of which is formularized ln partlcular with an agent swelllng at low temperatures and organo-metallic flame-retarding agents.
* trademark 9 131923~
The working temperature ls between 30 and 40 C ~preferably, the mould is also slightly heated).
Finlshing of the product obtalned via the method described earller concerns the cuttlng of burrs and especially the weld seam of the two coated fabrlcs 13 and 14 by means of meltlng the coating polyurethane.
In one variant, the fireproof barrier is 0 embodied as claimed in the invention with the aid of a fabric having a high degree of resistance to fire with at least one of its faces being coated impervlously wlth a dissolution of a flame-I retarded silicon/elastomer mixture. Preferably, s this fahric consists of a glass fabric, especially of the "STEVENS-GENIN T 235"*type whose weight is about 90 grams per square metre. The fabric thus coated and the polyurethane foam cushion conform to the standard ATS 1000.
Even if, such a coated fabric may also be glued onto a polyurethane foam lining by means of a glue consisting of a cold cross-linkable silicon diluted inside a solvent (of course, the viscosity needs to be adjusted in order to facilitate the coating which, preferably, is carried out on the two sides to be glued), the method according to the present invention gives better results as it allows to obtain the fire~proof barrier integrally with the lining.
The fabric is in the form of a linen cloth or, preferably, a jersey cloth.
Thus, the present inventlon makes it possible to embody extremely light fireproof barriers, whilst being highly fire-resistant in an exceptional fire.
* trademark lo 131~234 It is also possible to use other fabrics having a high degree of resistance to fire and, in particular, a fabric with preoxidized fibers, especially the fabric known under the trade ~ark "FIROTEX".
The present invention relates to a method for producing fire-proof lining parts and designed for amenity items, such as seats for public transport vehicles and more particularly for planes, armrests, head rests, seating units, damping terminals or analogous devices and items equipped with the lining parts thus obtained.
o BACKGROUND OF THE INVENTION
It is already known how to provide the frame of vehicle seats with a shock absorber lining part whose shape is adapted to that of the seat and which is made of foams comprising a grille cloth external coating.
Moreover, it is now customary for this purpose to use polyurethane foams which, from amongst the shock absorber polymers currently used in industry, are probably the most suitable materials as regards their mechanical properties and the cost price.
However, given the fact that unfortunately 2s polyurethane foams are very sensitive to temperature (because their urethane groups easily suffer pyrolysis and their aliphatic bonds are thermally oxidizable, the decomposition of these foams already occurs at about 250 C), it is common practice to protect against fire by providing a polyurethane lining part by means of a fireproof barrier constituted by a flame-retardant, and thus fireproof, lining or cover, inserted between the lining part and the grille 2 13~9234 cloth.
Up until now, two types of the following linkages are known to be used between the fireproof layer and the grille cloth :
s 1. - loose or flaccid linkage, without any mutual adherence, which firstly requires an additional construction for the seat coverer who needs to separately secure the fire-proof lining or cover to the lininq 0 part and frame and then to fix the covering and ,secondly, the relative displacement or movement between the lining and the coating with the formation of unaesthetic folds ;
in addition, the presence of seams in the fireproof lining is another negative aspect of this solution. ;
2. - intimate bonding by means of bonding agents (glues), which, apart from reducing the flexibility of the entire unit, exhibit fire-resistance properties which are unsatisfactory and which seriously compromise the protective function of the fire-proof lining.
However, even if solution 2 is preferable to 25 the first in that it ellminates the aforesaid drawbacks due to loose bonding of the lining with regard to the qrille cloth, the second sol~tion presents drawbacks identical to those of the first solution as regards the lining.
The present invention is therefore seeking to provide a method enabling an intimate bonding to be obtained between the fire-proof lining and the lining part, so that the latter and its fire-proof protection are like a monolithic structure, 1319~3~
obtained without any glue or seam.
SUMMARY OF THE INVENTION
The aim of the present invention is to provide a production method relating to a lining part integrally with a fire-proof barrier surrounding it, the said lining part being made of an inflammable polymer foam and is obtained by moulding and is intended for any amenity item, such as a seat, armrest, headrest, seating unit, shock absorber terminal or an analogous device, the said method being characterized in that it comprises the following stages :
i) embodiment of thin ductile impervious sheets by coating the internal side with a shirred fabric exhibiting a high degree of resistance to flames means of an elastic polymer material, especially elastomer, which includes a filler designed to render it fire-retardant and is compatible with the material constituted by the lining part, ii) covering of the walls of the mould used for moulding the lining part by means of the ductile impervlous sheets thus coated, iii) cladding these lmpervious coating sheets against the corresponding walls of the mould, by means of suction, lv) injection of the polymer material constituted by the lining part inside the mould.
As regards the garnishing material used within the scope of the present invention, this preferably consists of polyurethane foam whose expansion occurs inside the mould following the 4 ~3~3~
aforesaid injection operation at iv).
The fact that the fire-proof barrier (namely, the aforesaid shirred fabric) is integrally embodied with the lining part offers the advantage of eliminating wear and tear of the barrier, this being due to the relative displacement occurring in embodiments of the previous Art, and which does not occur with the articles embodied as claimed in the invention 0 because the intimate bonding between the fire-proof barrier and the polyurethane foam results in the coated fire-proof fabric undergoing the same deformations as those of the lining part.
According to one mode of embodiment favorable to the invention, the said shirred fabric consists of polyaramid fibers and preoxidized fibers which are woven together, specially by knitting, so that they provide the fabric with a multidirectional elasticity.
According to another mode of embodiment favorable to the method as claimed in the invention, the fire-protected lining part thus obtained comprlses a grille cloth which is preferably made of the said multidirectional elastic protectlve fabrlc.
Apart from the preceding dispositions, the invention still includes other dispositions~
which will be specified in the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be more readily understood by referring to the following 131923~
additlonal description, which relates to the annexed drawings in which :
figure 1 is a diagrammatic view illustrating the working principle of the mould used for implementing the method as claimed in the invention ;
figures 2, 3 and 4 are also diagrammatic views of the various stages of this method ; and figure 5 is again another diagrammatic 0 view of an amenity article (cushion) obtained by means of the method as claimed in the invention.
However, it should be properly understood that these drawings and the corresponding descriptive parts are given solely as an example illustrating the aim of the invention and consequently in no way limit the possibilities of this invention.
DETAILED DE~CRIPTION OF THE PREFERRED EM~ODIMENT~
The working principle of a mould likely to be used within the context of the present invention can be more readily understood by referring to figure 1 where a mould 1 is shown in two parts defined by the numerical references 2 and 3. In each part of the mould, a large number of suction pipes are provided, uniformly distributed such as 4'a to 4'_ and 4"a 4"S, connected to a main pipe S and 6 respectively, which are connected to a suction pump 7 and 8 respectively.
Each of these pumps 7 and 8 is intended to clad, against the internal side of the corresponding mould portion 2 and 3,a shee~ 11 6 13~923~
and 12 ~visible on figure 2) by means of the suction produced by the aforesaid pumps (cf. also figure 3).
The sheets 11 and 12 are thin compound impervious ductile sheets, each of which is obtained from a thin fire-proof shirred fabric 13 and 14, respectively, which is coated on one side - namely the internal side intended to come into intimate contact with the lining part, by becoming integral with the latter - by means of an elastic polymer compound, preferably an elastomer, which is firstly rendered fireproof by incorporating a suitable filler (recognised by technicians) and which is stretched over each thin sheet of fabric 13 and 14, in the form also of a thin layer 15.
Once this preliminary stage for preparing the thin ductile impervious sheets 11 and 12 is ended, this involves :
- positioning them in each of the portions 2 and 3 of the mould 1, as shown on fiqure 2, - cladding them against the internal face 9 and 10 of the corresponding mould portion 2 and 3, respectively ,by activating the suction pumps 7 and 8 ~cf. figure 3), - closlng the mould 1 by superimposing the portion 2 onto the portion 3 of the mould whilst maintaining the suction produced by the pumps so that the composite sheets 11 and 12 are always intimately cladded against the aforesaid internal faces 9 and 10 ~cf. figure 4), - injecting a suitable polymer material inside 7 13~3l~
the previously prepared rnould 1 in order to receive this material with the aid of an injection device (shown diagrammatically on figure l):the chosen lining polymer material may consist of polyurethane (PU) which is sucked in its liquid state from a vessel 17 by a pump 18 cooperating with a blending device 19 disposed downstream of the pump 18 immediately before the injection nozzle 20 (cf. also figure 0 4) : the blending device 19 has two inputs 21 and 22, the first being for the polyurethane and the second for additives, especially consisting of accelerators, intended to favor cross-linkage of the polyurethane derived from lS the vessel 17;
- extracting the moulded product - after expansion of the polyurethane (cf. the numerical reference on figure 4), which is naturally linked to the composite sheets 11 and 12 by virtue of the compatlbility between the polyurethane and the flame-retarded elastomer coated on each thin shirred fabric sheet 13 and 14 - such as the cushion 23 shown diagrammatically on figure 5, in order to carry out the required finishlng operations, such as the cutting of the portions of the composite sheets exceeding the spatial requirement limits of the moulded product and welding of this sheets along the circumference of the cut.
By means of the method as claimed in the invention, it is thus possible to obtain amenity items, such as seats, headrests, armrests, seating units, damping terminals or other items, the lining of these items being embodied integrally 8 ~ 3~ ~23~
~intimately llnked) with the fireproof barrler constltuted by the aforesald composlte sheet whose supporting shirred fabrlc of the coated elastomer can preferably also play the role of an appearance cover, itself also thus belnq lntegrated w}th the llnlng.
Of course, it is possible to provide the product obtained by means of the method as claimed in the invention with a separate appearance cover o without, however, departing from the context of the lnvention.
By way of example in no way restrictive, here are some of the materlals which can be used I to implement the method as claimed in the inventlon :
- as regards the ductlle shlrred fabric, it would be an advantage for this to be made of a "PANOTEX"* jersey fabric comprised of "PANOX P
505"*fibers and aramid, - as regards the impervious linking coating lntended to be coated on one face of the sald ductile fabric, it would be an advantage for thls to be a flame-retarding polyurethane based mixture (flame-retardlng agents possibly 2s includlng, amongst other elements, a halogen compound) ; the thickness of the impervious film is preferably between l and 8/lOO mm, half of which ls retrleved - after absorptlon - on the coated slde of the fabric ;
- as regards the cellular polyurethane, this ls a bi-constituent llquid, the polyalcohol of which is formularized ln partlcular with an agent swelllng at low temperatures and organo-metallic flame-retarding agents.
* trademark 9 131923~
The working temperature ls between 30 and 40 C ~preferably, the mould is also slightly heated).
Finlshing of the product obtalned via the method described earller concerns the cuttlng of burrs and especially the weld seam of the two coated fabrlcs 13 and 14 by means of meltlng the coating polyurethane.
In one variant, the fireproof barrier is 0 embodied as claimed in the invention with the aid of a fabric having a high degree of resistance to fire with at least one of its faces being coated impervlously wlth a dissolution of a flame-I retarded silicon/elastomer mixture. Preferably, s this fahric consists of a glass fabric, especially of the "STEVENS-GENIN T 235"*type whose weight is about 90 grams per square metre. The fabric thus coated and the polyurethane foam cushion conform to the standard ATS 1000.
Even if, such a coated fabric may also be glued onto a polyurethane foam lining by means of a glue consisting of a cold cross-linkable silicon diluted inside a solvent (of course, the viscosity needs to be adjusted in order to facilitate the coating which, preferably, is carried out on the two sides to be glued), the method according to the present invention gives better results as it allows to obtain the fire~proof barrier integrally with the lining.
The fabric is in the form of a linen cloth or, preferably, a jersey cloth.
Thus, the present inventlon makes it possible to embody extremely light fireproof barriers, whilst being highly fire-resistant in an exceptional fire.
* trademark lo 131~234 It is also possible to use other fabrics having a high degree of resistance to fire and, in particular, a fabric with preoxidized fibers, especially the fabric known under the trade ~ark "FIROTEX".
Claims (13)
1. A method of producing a lining member of a foaming polymer material provided with a sealing-tight casing and intended for any comfort article such as a seat, armrest, headrest, bench seat or shock absorber, comprising the following operations:
covering the inside walls of a mould by means of the casing;
the use of vacuum to apply the casing lining to the walls of the mould flush against the said walls;
direct injection of the foaming polymer material used for providing the lining, on the inside of the casing which is thus applied flush against the walls of the mould, the said method being characterised in that it likewise comprises the following stages:
- prior provision of the sealing-tight casing forming a fire check barrier and constituted by thin and deformable composite sheets by induction of the inside surface of an elastic cloth, offering a high degree of flame-resistance, by means of a composition of a particularly elastomeric elastic polymer material, comprising a filling intended to render it fireproof and compatible with the foaming polymer material;
- extraction of the moulded lining member which is provided with its fire check barrier constituted by the aforesaid composite sheets and the performance of finishing operations such as the cutting of the portions of the said composite sheets which extend beyond the overall limits of the said member and welding of these sheets according to the cutting contours.
covering the inside walls of a mould by means of the casing;
the use of vacuum to apply the casing lining to the walls of the mould flush against the said walls;
direct injection of the foaming polymer material used for providing the lining, on the inside of the casing which is thus applied flush against the walls of the mould, the said method being characterised in that it likewise comprises the following stages:
- prior provision of the sealing-tight casing forming a fire check barrier and constituted by thin and deformable composite sheets by induction of the inside surface of an elastic cloth, offering a high degree of flame-resistance, by means of a composition of a particularly elastomeric elastic polymer material, comprising a filling intended to render it fireproof and compatible with the foaming polymer material;
- extraction of the moulded lining member which is provided with its fire check barrier constituted by the aforesaid composite sheets and the performance of finishing operations such as the cutting of the portions of the said composite sheets which extend beyond the overall limits of the said member and welding of these sheets according to the cutting contours.
2. A method according to claim 1, characterised in that the said elastic cloth is constituted by polyaramide fibres and pre-oxidised fibres which are woven together, especially by a knitting process, so that they impart multi-directional elasticity to the woven fabric.
3. A method according to claim 1 or 2, characterised in that the fireproof lining member which is thus obtained comprises a decorative covering.
4. A method according to claim 3, characterised in that the said decorative covering is constituted by the flexible fabric which itself offers a high degree of flame-resistance.
5. A method according to claim 1, 2 or 4, characterised in that the elastic cloth is, on its face which is in contact with the lining, coated with a dissolution of a fire-proofed silicone-elastomer mixture.
6. A method according to claim 5, characterised in that the elastic cloth is a jersey-type glass cloth.
7. Comfort article, such as a seat, armrest, headrest, bench seat, or shock absorber, wherein these are equipped with at least one fireproof lining member and embodied with its fire check barrier by the method as claimed in claim 1 or 2.
8. Comfort article as claimed in claim 7, wherein the said elastic cloth is made from polyaramide fibres and pre-oxidized fibres, or glass fibres which are woven together, especially by a knitting process, so that they impart multi-directional elasticity to the woven fabric.
9. Comfort article as claimed in claim 7, wherein the fireproof lining member which is thus obtained comprises a decorative covering.
10. Comfort article as claimed in claim 8, wherein the fireproof lining member which is thus obtained comprises a decorative covering.
11. Comfort article as claimed in claim 9 or 10, wherein the said decorative covering is constituted by the flexible fabric which itself offers a high degree of flame-resistance.
12. Comfort article as claimed in claim 7, wherein the elastic cloth is, on its face which is in contact with the lining, coated with a dissolution of a fireproofed silicone-elastomer mixture.
13. Comfort article as claimed in claim 8, wherein the elastic cloth is, on its face which is in contact with the lining, coated with a dissolution of a fireproofed silicone-elastomer mixture.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712494 | 1987-09-09 | ||
| FR8712494A FR2620080B1 (en) | 1987-09-09 | 1987-09-09 | METHOD OF MANUFACTURING A TRIM PIECE IN FULL WITH ITS FIRE-RESISTANT BARRIER AND COMFORT ARTICLES EQUIPPED WITH TRIM PIECES THUS OBTAINED |
| FR8712678A FR2620343B1 (en) | 1987-09-14 | 1987-09-14 | COMFORT ARTICLES WITH FIRE PROTECTION |
| FR8712678 | 1987-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1319234C true CA1319234C (en) | 1993-06-22 |
Family
ID=26226202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000576869A Expired - Fee Related CA1319234C (en) | 1987-09-09 | 1988-09-09 | Production method relating to a lining part integrally with its fire-proof barrier and amenity items equipped with lining parts thus obtained |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0307290B1 (en) |
| JP (1) | JPH01108011A (en) |
| AT (1) | ATE75659T1 (en) |
| CA (1) | CA1319234C (en) |
| DE (2) | DE3870776D1 (en) |
| ES (1) | ES2008648T3 (en) |
| GR (2) | GR890300112T1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914082A (en) | 1995-11-30 | 1999-06-22 | Harrison; Donald G. | Method and apparatus for molding thermosetting polymers onto substrates |
| US5928593A (en) | 1995-11-30 | 1999-07-27 | Harrison; Donald G. | Method and apparatus for molding thermosetting polymers onto substrates |
| US5939004A (en) | 1995-11-30 | 1999-08-17 | Harrison; Donald G. | Molding thermosetting polymers onto substrates |
| US6139787A (en) | 1996-10-24 | 2000-10-31 | Ubertech Texas, Inc. | Method for applying molded silicone design elements onto substrates |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5002293A (en) * | 1992-08-17 | 1994-03-15 | E.I. Du Pont De Nemours And Company | Fire-resistant material comprising a fiberfill batt |
| GB9307256D0 (en) * | 1993-04-07 | 1993-06-02 | Baines Bernard D | Fire dampers |
| DE19917677A1 (en) * | 1999-04-19 | 2000-11-02 | Calenberg Ingenieure Planmaesi | Elastomeric molded article, useful for support or cushioning of at least part of human body comprises casing filled with elastomeric material that is at least partially bonded to casing |
| US6331028B1 (en) | 2000-10-17 | 2001-12-18 | Advance Usa, Inc. | Fiber-reinforced composite structure |
| DE10327711B4 (en) | 2003-06-17 | 2022-03-17 | Volkswagen Ag | Arrangement of vibration dampers on motor vehicle seats |
| DE102012204486A1 (en) * | 2012-03-21 | 2013-09-26 | Robert Bosch Gmbh | Process for producing flameproof plastic workpieces |
| CN105627383B (en) * | 2016-03-17 | 2017-10-24 | 米永峰 | A kind of gas kitchen ranges |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2391334A1 (en) * | 1977-05-16 | 1978-12-15 | Rhone Poulenc Ind | Light fireproof, phenolic resin foam construction material - contg. nonwoven synthetic fibrous material |
| US4423102A (en) * | 1979-02-27 | 1983-12-27 | Etablissements M. Duret & Fils | Covering structure for seating or the like |
| US4247347A (en) * | 1979-03-19 | 1981-01-27 | Lischer James F | Process for molding cloth including a fabric layer by heating to at least the greater of the set or softening temperature the stitches thereof having never been set, and molding a cloth covered foam filled product |
| US4283457A (en) * | 1979-11-05 | 1981-08-11 | Huyck Corporation | Laminate structures for acoustical applications and method of making them |
| JPS5822154A (en) * | 1981-07-31 | 1983-02-09 | 株式会社イノアックコ−ポレ−ション | Flexible foamed shape and its manufacture |
| US4529639A (en) * | 1984-06-27 | 1985-07-16 | Collins & Aikman Corporation | Molded foam-backed carpet assembly and method of producing same |
| FR2578189B1 (en) * | 1985-03-01 | 1987-04-17 | Roth Sa Freres | METHOD FOR MANUFACTURING CUSHIONS WITH INTEGRATED FILLING WITH SEWED, SEALED AND PARTIALLY DESOLIDARIZED COVER OF POLYURETHANE FOAM |
| GB2179067A (en) * | 1985-08-12 | 1987-02-25 | Firth Furnishings Ltd | Fire resistant fabric |
| GB2179068A (en) * | 1985-08-12 | 1987-02-25 | Firth Furnishings Ltd | Fire resistant fabric |
-
1988
- 1988-09-02 DE DE8888402212T patent/DE3870776D1/en not_active Expired - Fee Related
- 1988-09-02 ES ES198888402212T patent/ES2008648T3/en not_active Expired - Lifetime
- 1988-09-02 DE DE198888402212T patent/DE307290T1/en active Pending
- 1988-09-02 EP EP88402212A patent/EP0307290B1/en not_active Expired - Lifetime
- 1988-09-02 AT AT88402212T patent/ATE75659T1/en not_active IP Right Cessation
- 1988-09-08 JP JP63227359A patent/JPH01108011A/en active Pending
- 1988-09-09 CA CA000576869A patent/CA1319234C/en not_active Expired - Fee Related
-
1990
- 1990-01-19 GR GR89300112T patent/GR890300112T1/en unknown
-
1992
- 1992-06-29 GR GR920401378T patent/GR3005050T3/el unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914082A (en) | 1995-11-30 | 1999-06-22 | Harrison; Donald G. | Method and apparatus for molding thermosetting polymers onto substrates |
| US5928593A (en) | 1995-11-30 | 1999-07-27 | Harrison; Donald G. | Method and apparatus for molding thermosetting polymers onto substrates |
| US5939004A (en) | 1995-11-30 | 1999-08-17 | Harrison; Donald G. | Molding thermosetting polymers onto substrates |
| US6139787A (en) | 1996-10-24 | 2000-10-31 | Ubertech Texas, Inc. | Method for applying molded silicone design elements onto substrates |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0307290A1 (en) | 1989-03-15 |
| JPH01108011A (en) | 1989-04-25 |
| GR3005050T3 (en) | 1993-05-24 |
| EP0307290B1 (en) | 1992-05-06 |
| ES2008648A4 (en) | 1989-08-01 |
| ES2008648T3 (en) | 1993-03-01 |
| GR890300112T1 (en) | 1990-01-19 |
| DE307290T1 (en) | 1989-09-14 |
| DE3870776D1 (en) | 1992-06-11 |
| ATE75659T1 (en) | 1992-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 19970623 |