US3259535A - Method and apparatus for treating mats of a loose fibrous or filamentary structure - Google Patents

Method and apparatus for treating mats of a loose fibrous or filamentary structure Download PDF

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Publication number
US3259535A
US3259535A US181251A US18125162A US3259535A US 3259535 A US3259535 A US 3259535A US 181251 A US181251 A US 181251A US 18125162 A US18125162 A US 18125162A US 3259535 A US3259535 A US 3259535A
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Prior art keywords
mat
threads
cover sheet
mats
applying
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US181251A
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English (en)
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Roderich Wilhelm Graeff
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Flachglas Wernberg GmbH
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Detag
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • 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
    • B29K2105/0854—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 in the form of a non-woven mat
    • 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
    • B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/08—Glass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1722—Means applying fluent adhesive or adhesive activator material between layers
    • Y10T156/1727—Plural indefinite length or running length workpieces
    • Y10T156/1729—Fluid applied to nip between indefinite length webs

Definitions

  • the present invention relates to a method and an apparatus for treating mats of materials of a loose fibrous or filamentary structure in a rolling process and for protecting such mats during this process from the danger of being damaged by the traction which is exerted thereon by the rollers and which may be of such a strength as to endanger the cohesion of the fibers or threads of the mat.
  • This reinforcing material may consist, for example, of glass fiber mats, that is, of a product with a fibrous structure.
  • a liquid resin for example, a polyester resin
  • 'It is an object of the present invention to provide a method and an apparatus for manufacturing and treating mats of a fibrous or filamentary structure and for attaining a product of a superior quality.
  • FIGURE 1 illustrates the conventional method and apparatus for producing a resin-impregnated mat
  • FIGURE 2 illustrates the method according to the invention and shows a side view of the new apparatus; while FIGURE 3 shows a plan view of the apparatus according to FIGURE 2.
  • the reinforcing material for example, a glass fiber mat 1
  • a supply roll 2 is Wound from a supply roll 2 and fed to 3,259,535 Patented July 5,1966
  • the fibrous mat Since the fibrous mat has a'rather low solidity, much lower than that of a web of fabric, it will, when subjected to an uneven pressure or tension, also yield to a greater extent at those points where a greater force is applied. Such irregularities cann'ot be entirely avoided in the rolling operation. They may be due to various factors, for example, to an uneven distribution of the impregnating material. The danger then occurs that the mat will not only be extended unevenly but may even tear. Even the distribution of the impregnating material in the mat may then become uneven. These difiiculties increase with the increase in the viscosity of the resins applied in the impregnation of such mats. In other words, since high-quality products usually require highly viscous resins, the manufacture of such products also becomes exceedingly difiicult and thus very expensive, also because of'the great amount of rejects caused by these difiiculties.
  • threads 9, for example, of nylon have previously been fed between the mat and the upper cover sheet 8, as indicated in FIG- UR-E 1.
  • this method improved the strength of the material and its resistance to the mentioned irregularities, it increased the cost of the material considerably and also had the disadvantage that the threads remained in the product and were visible on or through the cover sheet.
  • the present invention retains the concept of employing threads for reinforcing the impregnated mat during the rolling operation; however, instead of embedding such threads in the mat so as to remain therein, the invention employs such threads in a substantially stationary position relative to the moving mat, as illustrated in FIG- URES 2 and 3. Any suitable number of such threads 11 extending substantially parallel to each other and to the mat 1 are then inserted between the moving mat and cover sheet 8 so that'after the molding or rolling operation by the rollers 7' and 7", the impregnated mat is withdrawn from the threads and thus moved away without them.
  • FIGURES 2 and 3 operates in the same manner as the conventional apparatus according to FIGURE 1,'-that is, the apparatus from which the threads 9 are omitted, except that it is additionally provided with a crossbar 10 on which a row of threads 11 are secured which extend from a point in front of the rollers 7' and 7" loosely to a point for a certain distance behind these rollers, as indicated in FIGURE 3.
  • the threads 11 should consist of a material which remains unaffected by the impregnating material, for example, of steel, glass, nylon, polyester, or the like, and they should be spaced from each other at a distance which depends upon the type of material to be impregnated and the viscosity of the impregnating material. The most suitable distance usually amounts to about 5 to 30 mm.
  • the new method and the new apparatus in which the threads are held in a stationary position relative to the moving mat may also be applied to other kinds of fibrous mats than those previously described, in which there is a danger that, due to an unequal distribution of forces, the structure of the mat might be destroyed during the molding or rolling operation.
  • threads 11 are applied upon the upper side of the mat, they may additionally also be applied upon the lower side. This is of particular advantage if the mat is not fed to the squeezing rollers in the horizontal direction but at an oblique or vertical direction.
  • the new method and new apparatus not only save the cost of the embedded threads, which previously remained in the products but the products which are now attained are also of a superior quality since they no longer contain the threads. Furthermore, it is now possible to Vary the ratio between the reinforcing material and the impregnating material as much as desired and there is no longer any danger that the use of a very viscous impregnating material might cause an uneven extension or even a tearing of the mat.
  • a device for treating mats of loose fibrous material comprising means for feeding the mat along a feed path, means for applying a fluid, hardenable resin to at least one side of the mat as it is being fed, a stationary member having a plurality of fixed length long and flexible laterally spaced substantially parallel threads disposed along the feed path of said mat with the threads thereof falling onto the plastic material which has been applied to said mat, means for applying a cover sheet over the mat on the side with the plastic material and the threads, smooth surface means for continuously pressing the mat as it is being fed at a location overlying the cover sheet and the threads, said feeding means being effective to withdraw the mat with the plastic material and the cover sheet away from the threads after pressing whereby the threads are removed from the cover sheet after the mat with the cover sheet and plastic material has been pressed.
  • An apparatus for preparing composite sheet material using a mat of loose fibrous material comprising a support, means for moving a carrier sheet along said support, means for directing a mat onto the moving carrier sheet, means for impregnating the mat with a fluid hardenable synthetic resin, stationary holding means having a plurality of flexible substantially parallel laterally spaced threads of limited length attached thereto and loosely extending longitudinally along said support in the direction of feed of said carrier sheet, means for applying a top sheet over the threads and the resin applied to said mat as said carrier sheet with the mat is being advanced, smooth surface means for pressing the moving resin impregnated mat at a location to overlie said cover sheet and said threads, said threads projecting beyond said pressing means a short distance, said means for moving a carrier sheet being effective to withdraw the pressed mat away from said pressing means and the stationary threads to drag the threads over the surface of the mat below the covering sheet as the composite sheet material is being drawn away.
  • Apparatus for preparing composite sheet material comprising a support, means for moving a carrier sheet along said support, means supplying a mat of material of loose structure onto the moving carrier sheet, means for impregnating the mat with a fluid synthetic resin, stationary holding means, a plurality of flexible substantially parallel threads of limited length attached at their rear ends to the said holding means and loosely extending longitudinally along the support, smooth surfaces means for squeezing the moving impregnated fibrous layer forwardly of the said thread holding means, the said threads projecting a short distance beyond said squeezing means, and means for withdrawing the squeezed fibrous layer from said squeezing means permitting with the stationary threads to drag over the surface of the fibrous layer as the layer is moved away therefrom.
  • Apparatus according to claim 5 including means for applying a cover sheet over said mat and saidthreads and wherein said squeezing means comprises opposed rotating rollers through which said carrier sheet, impregnated mat with threads thereon, and cover sheet are moved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Reinforced Plastic Materials (AREA)
  • Carpets (AREA)
US181251A 1961-03-24 1962-03-21 Method and apparatus for treating mats of a loose fibrous or filamentary structure Expired - Lifetime US3259535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED35735A DE1181900B (de) 1961-03-24 1961-03-24 Einrichtung zur fortlaufenden Behandlung von Werkstoffbahnen aus Fasern oder Faeden mit Wirrfaserstruktur, insbesondere zum Herstellen von mit Kunstharz getraenkten Bahnen von Verstaerkungsmaterial mit Deckfolien

Publications (1)

Publication Number Publication Date
US3259535A true US3259535A (en) 1966-07-05

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US181251A Expired - Lifetime US3259535A (en) 1961-03-24 1962-03-21 Method and apparatus for treating mats of a loose fibrous or filamentary structure

Country Status (8)

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US (1) US3259535A (it)
BE (1) BE615328A (it)
CH (1) CH393729A (it)
DE (1) DE1181900B (it)
DK (1) DK104077C (it)
GB (1) GB948040A (it)
LU (1) LU41357A1 (it)
NL (1) NL276105A (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536551A (en) * 1966-05-18 1970-10-27 Saint Gobain Method of manufacturing composite laminated resinous sheets
US3977928A (en) * 1973-08-18 1976-08-31 Kabushiki Kaisha Tomoku Process and apparatus for producing a soft fibrous sheet
US4469543A (en) * 1978-11-29 1984-09-04 Allied Corporation Lamination of highly reinforced thermoplastic composites

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455558A1 (fr) * 1979-05-03 1980-11-28 Pirat Sa Jean Procede de fabrication de revetements muraux, dispositif pour la mise en oeuvre de ce procede et revetements muraux ainsi obtenus
GB2253419B (en) * 1991-03-05 1994-06-15 Kingspan Res & Dev Ltd Method and apparatus for manufacturing a panel
EP0585626A1 (de) * 1992-08-14 1994-03-09 Hoechst Aktiengesellschaft Kaschierte Mineralfasermatte

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2260081A (en) * 1938-03-25 1941-10-21 Ici Ltd Molding of sheets from plastic masses
US2370393A (en) * 1942-02-11 1945-02-27 William G Brubacher Method and apparatus for making wallboard
US2782458A (en) * 1954-12-07 1957-02-26 Dale C Emmert Method and apparatus for producing flat fiberglass reinforced plastic panels
US2931421A (en) * 1950-05-04 1960-04-05 Schuller Werner Apparatus for the production of a thin sheet or mat from glass fibres
US2969301A (en) * 1955-01-24 1961-01-24 Johns Manville Fiber Glass Inc Method of making a synthetic resin panel with a crinkled finish
US3158181A (en) * 1959-05-11 1964-11-24 Gore & Ass Polymeric tubate product and process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927623A (en) * 1956-04-30 1960-03-08 Filon Plastics Corp Composite sheet fabricating apparatus and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2260081A (en) * 1938-03-25 1941-10-21 Ici Ltd Molding of sheets from plastic masses
US2370393A (en) * 1942-02-11 1945-02-27 William G Brubacher Method and apparatus for making wallboard
US2931421A (en) * 1950-05-04 1960-04-05 Schuller Werner Apparatus for the production of a thin sheet or mat from glass fibres
US2782458A (en) * 1954-12-07 1957-02-26 Dale C Emmert Method and apparatus for producing flat fiberglass reinforced plastic panels
US2969301A (en) * 1955-01-24 1961-01-24 Johns Manville Fiber Glass Inc Method of making a synthetic resin panel with a crinkled finish
US3158181A (en) * 1959-05-11 1964-11-24 Gore & Ass Polymeric tubate product and process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536551A (en) * 1966-05-18 1970-10-27 Saint Gobain Method of manufacturing composite laminated resinous sheets
US3977928A (en) * 1973-08-18 1976-08-31 Kabushiki Kaisha Tomoku Process and apparatus for producing a soft fibrous sheet
US4469543A (en) * 1978-11-29 1984-09-04 Allied Corporation Lamination of highly reinforced thermoplastic composites

Also Published As

Publication number Publication date
DE1181900B (de) 1964-11-19
CH393729A (de) 1965-06-15
DK104077C (da) 1966-03-28
LU41357A1 (it) 1962-05-10
BE615328A (it)
NL276105A (it)
GB948040A (en) 1964-01-29

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