[go: up one dir, main page]

US3028282A - Method for smoothing and evening out the surfaces of pre-moulded parts consisting ofinorganic or organic fibers and resulting product - Google Patents

Method for smoothing and evening out the surfaces of pre-moulded parts consisting ofinorganic or organic fibers and resulting product Download PDF

Info

Publication number
US3028282A
US3028282A US699846A US69984657A US3028282A US 3028282 A US3028282 A US 3028282A US 699846 A US699846 A US 699846A US 69984657 A US69984657 A US 69984657A US 3028282 A US3028282 A US 3028282A
Authority
US
United States
Prior art keywords
fibers
glass
moulded parts
smoothing
stream
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 - Lifetime
Application number
US699846A
Inventor
Schuller Wolfgang
Goerden Leonhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3028282A publication Critical patent/US3028282A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • 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
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/67—Multiple nonwoven fabric layers composed of the same inorganic strand or fiber material

Definitions

  • the present invention relates to a method for smoothing and evening out the surfaces of pre-moulded parts consisting of inorganic or organic fibers. Such parts are used as reinforcing material in preparing moulded bodies of synthetic materials, e.g. polyester resins.
  • Such pre-moulded parts may for example consist of cotton or of cellulose fibers, linen fibers or synthetic organic fibers. As especially well suited have proved inorganic fibers, preferably glass fiber products.
  • the pre-moulded parts may be prepared e.g. of mats made of chopped glass fiber strands. However, the premoulded parts most frequently used are made of chopped rovings. These rovings consist of numerous untwisted adjacently lying glass fiber strands each of which contains a. great number, mostly 102 or 204, filaments, joined by a binding agent. The rovings are mostly cut into lengths of about 25-50 mm. (about /22), the chopped strands thus provided are conveyed by air to a sievelike mould, generally exposed to a sub-atmospheric pressure, and are by this means deposited on the mould. The body thus provided is sprayed with a binding agent and then removed from the mould. After the solvent of the binder has been evaporated and/ or cured in an oven, the pro-moulded part is ready for further treatment with plastic material.
  • pre-moulded parts made according to this method from mats or rovings have the disadvantage of an unsmooth and uneven surface. These often transfer themselves on to the finished articles which have been reinforced by those pre-moulded parts.
  • pre-moulded parts are prepared of rovings in such a way that at the beginning and/or at the end of the pre-moulding step, the chopped strands are subjected to a separating process before being deposited on the sieve mould.
  • This proved successful only to a limited extent, since, to achieve high strength, in the case of glass fiber reinforced plastics, there can only be used glass fibre strands which filaments have been firmly bonded and which have a low volume.
  • These when cut to short lengths, on the other hand cannot be split or separated into single fibers for covering the surfaces to any desired degree.
  • this procedure is tedious and expensive, since the action of covering the surfaces should only take a comparably short time, while changing from cutting of the rovingT'o separating the strands into single fibers takes a certain switchover time.
  • FIGURE 1 is an isometric view of one form of the invention with parts shown in section;
  • FIGURE 2 is a view similar to FIGURE 1 but shows a modification involving a separation of the cutting apparatus; and
  • FIGURE 3 "ice is a view similar to that shown in FIGURE 1, but shows a modification involving the production of large molded parts.
  • This invention shown in the accompanying drawing consists in three stages of operation in FIGS. 1-3, respectively, of uniformly distributing on the surfaces single staple fibers completely separated to smooth out the surfaces of pro-moulded parts of fiber mats or rovings.
  • Organic'fibers of the kind mentioned above preferably however, inorganic fibers, especially glass fibers, are suitable for this purpose.
  • the individual staple fibers to be used according to the invention are suitably produced by separating staple fiber slivers, for example glass staple fiber slivers of 500- 10,000 yds./lb.
  • staple fiber slivers for example glass staple fiber slivers of 500- 10,000 yds./lb.
  • Such slivers which as defined in Websters New Unabridged International Dictionary consist of fibers in a loose untwisted state, have the advantage that the fibers are not in the form of a bonded strand but are contained in the sliver mostly in the form of single fibres in loose unbonded connection.
  • the further separation of the sliver can be achieved by cutting, chopping or tearing.
  • other separating procedures may be used as well, e.g. blowing or stretch mg.
  • the cutting or chopping means already available on the pre-moulding machine for the preparation of the pro-mould can be used, as shown in FIG. 2.
  • a pre-moulding machine it could be equipped with two cutters 3, 3, and corresponding guide bar 2, 2' feeding the rovings needed for the body to the first one and glass staple fiber sliver to cover the surfaces to the second one from spools 1 and 1 respectively.
  • the procedure may be carried out with only one cutter 3 which is equipped with two separate feeding means as shown in FIG. 1.
  • the cut short lengths of glass fiber material are transferred from the cutter 3, or cutters 3, 3' to a molding chamber 7.
  • a blower 5 blows air into the chamber 7 through a duct 6 and thus creates suction in a tube 4, or tubes 4, 4', one end of which communicates with the duct 6 whereas the other end is connected to the output end of the cutter or cutters.
  • the fiber material thus blown into the chamber 7 is drawn with the air stream toward a male mold 8 of air-permeable material the interior of which communicates with a suction fan 9.
  • the procedure according to the invention is, however, not confined to the application in connection with premoulding machines. As shown in FIG. 3, it may also advantageously be used, for example, in the production of big moulded parts.
  • the deposition onto the surface of the big moulded part may be carried out by creating a stream of glass fibers in conveying air in the same manner as shown in FIG. 1.
  • a movable hose 7' provided with a discharge nozzle 7 for the stream of fibers is directed toward the mold 8' of a large molded part, in this case the hull of a boat.
  • the big moulded part may be moved.
  • a method of forming on a preformed reinforcing body consisting essentially of haphazardly arranged multi-filament glass staple fibers, a smooth and even surface the steps of suspending short lengths of mono filament glass staple fiber slivers in a stream of conveying fluid so as to distribute untwisted short monofilament glass staple fibers in said stream of conveying fluid; and directing said stream onto a surface of said preformed body consisting essentially of haphazardly arranged chopped multifilarnent glass staple strands so as to deposit on and entirely cover said surface with a layer consisting solely of said short monofilament glass fibers, whereby a smooth and even surface is formed on said preformed reinforcing body.
  • a method of forming a reinforcing body for a plastic molded article said reinforcing body having a smooth and even surface the steps of suspending short lengths of monofilament glass staple fiber slivers in a stream of conveying fluid; directing said short lengths of monofilament glass staple fibers-containing stream onto a matrix so as to deposit said short lengths of monofilament fibers thereon, forming on said matrix a thin layer consisting solely of said short lengths of monofilament glass fibers; covering said thin layer with haphazardly arranged, chopped, multifilament glass fiber strands; directing onto the free surface of said covering of multifilament glass fiber strands a further stream of said short lengths of monofilament glass staple fibers-containing fluid so as to deposit and entirely cover said free surface with a thin layer consisting solely of said short monofilament glass fibers, whereby a composite reinforcing body is formed having a smooth and even surface formed of said thin layers of short untwisted
  • a method according to claim 2 and including the step of spraying a binder onto said composite body prior to removal of the same from said matrix.
  • a preformed reinforcing body comprising, in combination, a core portion consisting essentially of haphazardly arranged chopped multifilarnent glass fiber strands; and a cover layer covering said core portion, said cover layer having a smooth and even free surface and consisting solely of untwisted length cut slivers of monofilament glass staple fibers, said body having a smooth surface due to said cover layer of monofilament fibers and great mechanical strength due to said multifilament fibers of said core portion.
  • a preformed reinforcing body for plastic molded articles comprising, in combination, a core portion of relatively large thickness consisting essentially of haphazardly arranged chopped multifilarnent glass fiber strands and of a binder binding said strands together; and a relatively thin cover layer completely covering said core portion, said cover layer having a smooth and even free surface and consisting solely of cut slivers forming short lengths of untwisted monofilament glass staple fibers and of a binder biding said monofilament glass fibers to each other and said cover layer to said core portion, said body having a smooth surface due to said cover layer of mono filament fibers and great mechanical strength due to said multifilament fibers of said core portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Reinforced Plastic Materials (AREA)
  • Nonwoven Fabrics (AREA)

Description

Aprll 1962 w. SCHULLER ET AL 3,028,282
METHOD FOR SMOOTHING AND EVENING OUT THE SURFACES OF PRE-MOULDED PARTS CONSISTING OF INORGANIC oR ORGANIC FIBERS AND RESULTING PRODUCT Filed Nov. 29. 1957 III NI r m INVENTORS 3 5 4M 4,. MM.
BY 424246 N United States Patent 3,028,282 METHOD FOR SMOOTHING AND EVENING OUT THE SURFACES OF PRE-MOULDED PARTS CON- SISTING F INORGANIC OR ORGANIC FIBERS AND RESULTING PRODUCT Wolfgang Schuiler, Hans Bardonstrasse 36, Wertheim (Main), Germany, and Leonhard Goerden, Muhlengasse 5, Oedt, Rhineland, Germany Filed Nov. 29, 1957, Ser. No. 699,846 Claims priority, application Germany Dec. 1, 1956 6 Claims. (Cl. 15443) The present invention relates to a method for smoothing and evening out the surfaces of pre-moulded parts consisting of inorganic or organic fibers. Such parts are used as reinforcing material in preparing moulded bodies of synthetic materials, e.g. polyester resins.
Such pre-moulded parts may for example consist of cotton or of cellulose fibers, linen fibers or synthetic organic fibers. As especially well suited have proved inorganic fibers, preferably glass fiber products.
The pre-moulded parts may be prepared e.g. of mats made of chopped glass fiber strands. However, the premoulded parts most frequently used are made of chopped rovings. These rovings consist of numerous untwisted adjacently lying glass fiber strands each of which contains a. great number, mostly 102 or 204, filaments, joined by a binding agent. The rovings are mostly cut into lengths of about 25-50 mm. (about /22), the chopped strands thus provided are conveyed by air to a sievelike mould, generally exposed to a sub-atmospheric pressure, and are by this means deposited on the mould. The body thus provided is sprayed with a binding agent and then removed from the mould. After the solvent of the binder has been evaporated and/ or cured in an oven, the pro-moulded part is ready for further treatment with plastic material.
The pre-moulded parts made according to this method from mats or rovings, however, have the disadvantage of an unsmooth and uneven surface. These often transfer themselves on to the finished articles which have been reinforced by those pre-moulded parts.
To overcome this disadvantage the surfaces of the premoulded parts have already been covered by thin surfacing mats consisting of single glass fibers. This, however, leads to difiiculties on irregular or bent surfaces, encountered on helmets or in motorcar-bodies for example. To avoid the formation of creases to the surfacing mats, it is necessary to cut these to the special shape of the pre-moulded part which method requires much time and is expensive.
According to another known method, pre-moulded parts are prepared of rovings in such a way that at the beginning and/or at the end of the pre-moulding step, the chopped strands are subjected to a separating process before being deposited on the sieve mould. This, however, proved successful only to a limited extent, since, to achieve high strength, in the case of glass fiber reinforced plastics, there can only be used glass fibre strands which filaments have been firmly bonded and which have a low volume. These, however, when cut to short lengths, on the other hand cannot be split or separated into single fibers for covering the surfaces to any desired degree. Furthermore this procedure is tedious and expensive, since the action of covering the surfaces should only take a comparably short time, while changing from cutting of the rovingT'o separating the strands into single fibers takes a certain switchover time.
FIGURE 1 is an isometric view of one form of the invention with parts shown in section; FIGURE 2 is a view similar to FIGURE 1 but shows a modification involving a separation of the cutting apparatus; and FIGURE 3 "ice is a view similar to that shown in FIGURE 1, but shows a modification involving the production of large molded parts.
This invention shown in the accompanying drawing, consists in three stages of operation in FIGS. 1-3, respectively, of uniformly distributing on the surfaces single staple fibers completely separated to smooth out the surfaces of pro-moulded parts of fiber mats or rovings.
Organic'fibers of the kind mentioned above, preferably however, inorganic fibers, especially glass fibers, are suitable for this purpose.
The individual staple fibers to be used according to the invention are suitably produced by separating staple fiber slivers, for example glass staple fiber slivers of 500- 10,000 yds./lb. Such slivers which as defined in Websters New Unabridged International Dictionary consist of fibers in a loose untwisted state, have the advantage that the fibers are not in the form of a bonded strand but are contained in the sliver mostly in the form of single fibres in loose unbonded connection.
The further separation of the sliver can be achieved by cutting, chopping or tearing. However, other separating procedures may be used as well, e.g. blowing or stretch mg.
For preparation of the separated fibers special separation means may be used. Alternatively the cutting or chopping means already available on the pre-moulding machine for the preparation of the pro-mould can be used, as shown in FIG. 2. To adapt a pre-moulding machine for this purpose it could be equipped with two cutters 3, 3, and corresponding guide bar 2, 2' feeding the rovings needed for the body to the first one and glass staple fiber sliver to cover the surfaces to the second one from spools 1 and 1 respectively. Alternatively the procedure may be carried out with only one cutter 3 which is equipped with two separate feeding means as shown in FIG. 1.
The cut short lengths of glass fiber material are transferred from the cutter 3, or cutters 3, 3' to a molding chamber 7. For this purpose, a blower 5 blows air into the chamber 7 through a duct 6 and thus creates suction in a tube 4, or tubes 4, 4', one end of which communicates with the duct 6 whereas the other end is connected to the output end of the cutter or cutters. The fiber material thus blown into the chamber 7 is drawn with the air stream toward a male mold 8 of air-permeable material the interior of which communicates with a suction fan 9.
With particular advantage the procedure according to the invention is carried out fully automatically, e.g. in connecting two cutting machines by a control arrangement which starts and stops automatically.
If for example a pre-mould with a smooth surface on both sides has to be made for a motorcyclists or a miners helmet this can be done as follow:
(1) Starting the cutting means 3' and depositing onto the mould 8 a layer of single staple fibers, e.g. of glass staple fiber slivers up to a certain thickness.
(2) Stopping the cutting means 3, starting the cutting means 3 and depositing chopped glass fiber strands onto the mould 8 in the well known manner.
(3) Stopping the cutting means 3, restarting the cutting means 3' and depositing again individual staple fibers onto the pre-moulded part as in (1).
(4) Spraying a binder onto the pre-moulded part, removing the part from the mould, and drying it in an oven.
The procedure according to the invention is, however, not confined to the application in connection with premoulding machines. As shown in FIG. 3, it may also advantageously be used, for example, in the production of big moulded parts. The deposition onto the surface of the big moulded part may be carried out by creating a stream of glass fibers in conveying air in the same manner as shown in FIG. 1. A movable hose 7' provided with a discharge nozzle 7 for the stream of fibers is directed toward the mold 8' of a large molded part, in this case the hull of a boat. Vice versa, with the nozzle being fixed, the big moulded part may be moved. In this connection it is advantageous, although not necessary, to mount the big part on a support 10, which is permeable to air and, if necessary, exposed to a sub-atmospheric pressure.
What We claim is:
1. In a method of forming on a preformed reinforcing body consisting essentially of haphazardly arranged multi-filament glass staple fibers, a smooth and even surface, the steps of suspending short lengths of mono filament glass staple fiber slivers in a stream of conveying fluid so as to distribute untwisted short monofilament glass staple fibers in said stream of conveying fluid; and directing said stream onto a surface of said preformed body consisting essentially of haphazardly arranged chopped multifilarnent glass staple strands so as to deposit on and entirely cover said surface with a layer consisting solely of said short monofilament glass fibers, whereby a smooth and even surface is formed on said preformed reinforcing body.
2. In a method of forming a reinforcing body for a plastic molded article said reinforcing body having a smooth and even surface, the steps of suspending short lengths of monofilament glass staple fiber slivers in a stream of conveying fluid; directing said short lengths of monofilament glass staple fibers-containing stream onto a matrix so as to deposit said short lengths of monofilament fibers thereon, forming on said matrix a thin layer consisting solely of said short lengths of monofilament glass fibers; covering said thin layer with haphazardly arranged, chopped, multifilament glass fiber strands; directing onto the free surface of said covering of multifilament glass fiber strands a further stream of said short lengths of monofilament glass staple fibers-containing fluid so as to deposit and entirely cover said free surface with a thin layer consisting solely of said short monofilament glass fibers, whereby a composite reinforcing body is formed having a smooth and even surface formed of said thin layers of short untwisted monofilament glass fibers and great mechanical strength due to said chopped multifilament glass fiber strands; and removing said composite body from said matrix.
3. A method according to claim 1, and including the step of spraying a binder onto said smooth surfaced reinforcing body so as to adhere the glass fibers thereof to each other.
4. A method according to claim 2, and including the step of spraying a binder onto said composite body prior to removal of the same from said matrix.
5. A preformed reinforcing body, comprising, in combination, a core portion consisting essentially of haphazardly arranged chopped multifilarnent glass fiber strands; and a cover layer covering said core portion, said cover layer having a smooth and even free surface and consisting solely of untwisted length cut slivers of monofilament glass staple fibers, said body having a smooth surface due to said cover layer of monofilament fibers and great mechanical strength due to said multifilament fibers of said core portion.
6. A preformed reinforcing body for plastic molded articles, comprising, in combination, a core portion of relatively large thickness consisting essentially of haphazardly arranged chopped multifilarnent glass fiber strands and of a binder binding said strands together; and a relatively thin cover layer completely covering said core portion, said cover layer having a smooth and even free surface and consisting solely of cut slivers forming short lengths of untwisted monofilament glass staple fibers and of a binder biding said monofilament glass fibers to each other and said cover layer to said core portion, said body having a smooth surface due to said cover layer of mono filament fibers and great mechanical strength due to said multifilament fibers of said core portion.
References Cited in the file of this patent UNITED STATES PATENTS Labino Sept. 15,

Claims (1)

1. IN A METHOD OF FORMING ON A PREFORMED REINFORCING BODY CONSISTING ESSENTIALLY OF HAPHAZARDLY ARRANGED MULTI-FILAMENT GLASS STAPLE FIBERS, A SMOOTH AND EVEN SURFACE, THE STEPS OF SUSPENDING SHORT LENGTHS OF MONOFILAMENT GLASS STAPLE FIBER SLIVERS IN A STREAM OF CONVEYING FLUID SO AS TO DISTRIBUTE UNTWISTED SHORT MONOFILAMENT GLASS STAPLE FIBERS IN SAID STREAM OF CONVEYING FLUID; AND DIRECTING SAID STREAM ONTO A SURFACE OF SAID PREFORMED
US699846A 1956-12-01 1957-11-29 Method for smoothing and evening out the surfaces of pre-moulded parts consisting ofinorganic or organic fibers and resulting product Expired - Lifetime US3028282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3028282X 1956-12-01

Publications (1)

Publication Number Publication Date
US3028282A true US3028282A (en) 1962-04-03

Family

ID=8084712

Family Applications (1)

Application Number Title Priority Date Filing Date
US699846A Expired - Lifetime US3028282A (en) 1956-12-01 1957-11-29 Method for smoothing and evening out the surfaces of pre-moulded parts consisting ofinorganic or organic fibers and resulting product

Country Status (1)

Country Link
US (1) US3028282A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036488A3 (en) * 1980-03-21 1983-01-05 Asahi Fiber Glass Company Limited Reinforcing mat for fiber reinforced plastic material
US4468122A (en) * 1981-09-01 1984-08-28 Vysshee Voennoe Tekhnicheskoe Uchilische Imeni N.E. Baumana Interferometer for checking the shape of convex surfaces of optical components
US6030575A (en) * 1991-10-21 2000-02-29 The Dow Chemical Company Method for making preforms
US20070080481A1 (en) * 2005-10-12 2007-04-12 The Boeing Company Apparatus and methods for fabrication of composite components

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152901A (en) * 1936-09-05 1939-04-04 F W Manning Company Ltd Method of making filter fabric
US2160001A (en) * 1937-03-13 1939-05-30 Owens Corning Fiberglass Corp Glass wool packing
US2189840A (en) * 1936-06-22 1940-02-13 Owens-Corning Fiberglass Corp. Method for applying coatings to fibers in mat form
US2231324A (en) * 1938-05-04 1941-02-11 Behr Manning Corp Apparatus for and method of making hat bats
US2552124A (en) * 1945-12-12 1951-05-08 Owens Corning Fiberglass Corp Fibrous glass fabric
US2662044A (en) * 1949-07-28 1953-12-08 Owens Corning Fiberglass Corp Coated fabrics
US2702261A (en) * 1950-08-30 1955-02-15 Owens Corning Fiberglass Corp Method for processing mineral fibers
US2719336A (en) * 1950-11-22 1955-10-04 Owens Corning Fiberglass Corp Method and apparatus for conveying and severing mineral fibers
US2725601A (en) * 1952-03-04 1955-12-06 Ivan G Brenner Preform machine
US2790741A (en) * 1952-09-30 1957-04-30 Owens Coraing Fiberglas Corp Bonded fibrous products and method of manufacture
US2801673A (en) * 1954-01-04 1957-08-06 Owens Corning Fiberglass Corp Fibrous glass mats and manufacture thereof
US2811769A (en) * 1954-08-10 1957-11-05 Lubrizol Corp Process for preparing an asphalt-bonded glass fiber mat
US2904453A (en) * 1954-12-30 1959-09-15 Lof Glass Fibers Co Pipe wrap material and method of producing the same

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189840A (en) * 1936-06-22 1940-02-13 Owens-Corning Fiberglass Corp. Method for applying coatings to fibers in mat form
US2152901A (en) * 1936-09-05 1939-04-04 F W Manning Company Ltd Method of making filter fabric
US2160001A (en) * 1937-03-13 1939-05-30 Owens Corning Fiberglass Corp Glass wool packing
US2231324A (en) * 1938-05-04 1941-02-11 Behr Manning Corp Apparatus for and method of making hat bats
US2552124A (en) * 1945-12-12 1951-05-08 Owens Corning Fiberglass Corp Fibrous glass fabric
US2662044A (en) * 1949-07-28 1953-12-08 Owens Corning Fiberglass Corp Coated fabrics
US2702261A (en) * 1950-08-30 1955-02-15 Owens Corning Fiberglass Corp Method for processing mineral fibers
US2719336A (en) * 1950-11-22 1955-10-04 Owens Corning Fiberglass Corp Method and apparatus for conveying and severing mineral fibers
US2725601A (en) * 1952-03-04 1955-12-06 Ivan G Brenner Preform machine
US2790741A (en) * 1952-09-30 1957-04-30 Owens Coraing Fiberglas Corp Bonded fibrous products and method of manufacture
US2801673A (en) * 1954-01-04 1957-08-06 Owens Corning Fiberglass Corp Fibrous glass mats and manufacture thereof
US2811769A (en) * 1954-08-10 1957-11-05 Lubrizol Corp Process for preparing an asphalt-bonded glass fiber mat
US2904453A (en) * 1954-12-30 1959-09-15 Lof Glass Fibers Co Pipe wrap material and method of producing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036488A3 (en) * 1980-03-21 1983-01-05 Asahi Fiber Glass Company Limited Reinforcing mat for fiber reinforced plastic material
US4468122A (en) * 1981-09-01 1984-08-28 Vysshee Voennoe Tekhnicheskoe Uchilische Imeni N.E. Baumana Interferometer for checking the shape of convex surfaces of optical components
US6030575A (en) * 1991-10-21 2000-02-29 The Dow Chemical Company Method for making preforms
US20070080481A1 (en) * 2005-10-12 2007-04-12 The Boeing Company Apparatus and methods for fabrication of composite components

Similar Documents

Publication Publication Date Title
US2639759A (en) Method of forming glass fiber mats
JP2520903B2 (en) Fiber-reinforced composite material product and manufacturing method thereof
US2794759A (en) Method of making a resin impregnated fiber glass mat and product
US2577205A (en) Method of producing a fabric construction for reinforcing plastics and product
US2731066A (en) Reinforced fibrous products, method and apparatus for making same
CN104768725B (en) Method for making fiber preforms
US3170197A (en) Apparatus for producing a fibrous glass preform
US6767851B1 (en) Chopped strand non-woven mat production
US2552124A (en) Fibrous glass fabric
US2732885A (en) Method and apparatus for producing
US2577214A (en) Glass mat for reinforcing plastics
CN87101781A (en) Method for manufacturing shaped articles
US5695848A (en) Panel formed from molded fiberglass strands
US2528091A (en) Resilient glass fiber mat
US5413750A (en) Method of fabricating a preform
US3301930A (en) Method of production of fiber reinforced resin articles
US5819614A (en) Method for dispensing reinforcement fibers
CA2050200A1 (en) Method and apparatus for producing mold charge blanks for molding processes
US3028282A (en) Method for smoothing and evening out the surfaces of pre-moulded parts consisting ofinorganic or organic fibers and resulting product
CN102482820A (en) Fabric core with continuous glass fibers
US2794238A (en) Fiber glass mat
US2653355A (en) Method for processing mineral fibers
CN104768724B (en) Deposition equipment for controlled placement of reinforcing fiber bundles
CN103158323A (en) Method for producing honeycomb core with textile waste material
US2931421A (en) Apparatus for the production of a thin sheet or mat from glass fibres