EP0619775A1 - Verfahren zum Herstellen eines geradlinigen Elements - Google Patents

Verfahren zum Herstellen eines geradlinigen Elements

Info

Publication number
EP0619775A1
EP0619775A1 EP93922427A EP93922427A EP0619775A1 EP 0619775 A1 EP0619775 A1 EP 0619775A1 EP 93922427 A EP93922427 A EP 93922427A EP 93922427 A EP93922427 A EP 93922427A EP 0619775 A1 EP0619775 A1 EP 0619775A1
Authority
EP
European Patent Office
Prior art keywords
resin
lineal
curing
encased
die
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.)
Withdrawn
Application number
EP93922427A
Other languages
English (en)
French (fr)
Inventor
Terry R. Beaver
Arthur Blinkhorn
George R. Smith
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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 Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Publication of EP0619775A1 publication Critical patent/EP0619775A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/28Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0277Apparatus with continuous transport of the material to be cured
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/50Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/523Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04Wing frames not characterised by the manner of movement
    • E06B3/06Single frames
    • E06B3/08Constructions depending on the use of specified materials
    • E06B3/20Constructions depending on the use of specified materials of plastics
    • E06B3/205Constructions depending on the use of specified materials of plastics moulded or extruded around a core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0012Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154Coating solid articles, i.e. non-hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/001Profiled members, e.g. beams, sections
    • B29L2031/003Profiled members, e.g. beams, sections having a profiled transverse cross-section

Definitions

  • This invention pertains to making building components, particularly structural members having relatively low thermal conductivity.
  • reinforcement fibers are dipped into a liquid resinous bath and pulled through a die to produce the desired cross-sectional shape.
  • the compressed fibers and resin are then passed through a curing die during which the temperature of the resin is raised to a temperature sufficient to initiate the cure of the resin.
  • Pultrusion of lineal members having a porous glass wool core is different from traditional pultrusion processes.
  • the glass wool core is not dipped into a liquid bath of resin because of the need to limit the resin to the outer edges of the glass wool core.
  • the glass wool core is pulled through a die in which resin is injected at a relatively low pressure in order to apply resin only in the outer portion of the glass wool core.
  • the coated lineal member is passed through a curing die which initiates curing of the resin.
  • the resin is a polyester resin.
  • porous core lineal material In the case of a porous core lineal material, however, the relatively dense resinous area of the lineal is merely in the periphery of the cross-sectional area, and there is not enough residual heat in the pultruded lineal member to continue the curing process to completion in the ambient conditions of the manufacturing facility. Therefore, a problem in the manufacture of porous core, resin coated lineal material is that the materials are not completely cured as they are manufactured.
  • the resin material which is typically a polyester material, produces styrene gas.
  • the styrene is offgassed during the curing process.
  • the problem with an undercured lineal member is that when it is heated up for subsequent process steps, the styrene will continue to offgas, thereby potentially affecting later processes.
  • a method for making a lineal member having a porous core comprising feeding a shaped, elongated porous core, through a resin-encasing die wherein resin is injected under pressure to encase the core, through a curing die having a cross-sectional shape coinciding with and in contact with the resin-encased lineal member, with the curing die imparting sufficient heat to the lineal member to initiate cure of the resin, and through a curing chamber which is maintained at a temperature sufficient to complete the cure of the resin without substantial contact with the lineal member.
  • the present invention solves the problem of incomplete cure of the pultruded, porous core lineal member by providing a curing chamber which immediately follows the curing die and in which the lineal member is maintained at a temperature sufficient to complete the cure of the resin without substantial contact with the lineal member.
  • the fact that there is no substantial contact with the lineal member means that the curing chamber does not apply significant additional drag force onto the lineal member, thereby subjecting the lineal member to breaking due to forces exceeding the tensile strength of the lineal member.
  • the porous core has density less than about 320 kg/m 3 (20 lbs./ft 3 ) .
  • the porous core has a density within the range of from about 96 kg/m 3 (6 lbs./ft 3 ) to about 192 kg/m 3 (12 lbs./ft 3 ) .
  • the encased lineal is subjected to an additional coating step, preferably a painting step, which includes heating the encased lineal to temperature of at least 60°C (140°F) after the encased lineal is coated.
  • an additional coating step preferably a painting step, which includes heating the encased lineal to temperature of at least 60°C (140°F) after the encased lineal is coated.
  • the resin is injected under pressure lower than about 207 kPa (30 psi) to encase the core.
  • the curing chamber applies a drag force of less than about 2.27 kg (5 lbs.) on the lineal member.
  • the drag force applied by the curing chamber is less than about 0.91 kg (2 lbs.).
  • FIG. 2 is a schematic cross-sectional view in elevation of the curing die, taken along line 2-2.
  • FIG. 3 is a schematic cross-sectional view in elevation of the curing chamber taken along lines 3-3.
  • FIG. 4 is a schematic elevational view of the lineal painting process.
  • porous core 10 is pulled through various coating and curing equipment by puller 12 to form lineal member 14.
  • the puller can be any mechanical device, commonly known in the art, for pulling materials in a pultrusion process.
  • the porous core is preferably of mineral fibers, and most preferably is comprised of glass wool containing a resinous binder of urea phenol formaldehyde.
  • the porous core is preferably less than about 320 kg/m 3 (20 lbs./ft 3 ) , and more preferably has a density within the range of from about 96 kg/m 3 (6 lbs./ft 3 ) to about 192 kg/m 3 (12 lbs./ft 3 ) .
  • the density of the glass wool porous core is approximately 160 kg/m 3 (10 lbs./ft 3 ) .
  • the resin coating process is generally carried out as a two stage process.
  • the primer resin coat is applied first to the outer periphery of the porous core.
  • Resin impregnating die 16 connected with primer resin supply 18 can be used to apply a primer coat to the porous core.
  • Primer curing oven 20 can be positioned next in line in order to cure the primer resin.
  • the resin impregnated porous core is then passed through the coating apparatus which is comprised of coating resin supply 22 and resin encasing die 24. In this way, the porous core is first treated with a primer resin and then treated with an outer coating resin. It is to be understood that the invention could be used with a single resin application rather than a double resin application.
  • the curing die 26 Immediately following the resin encasing die is the curing die 26.
  • the curing die as shown in FIG. 2, has an inner surface with a cross-sectional shape coinciding with and in contact with the resin encased lineal member.
  • Curing dies are well known in the art. Typically, they are heated with a heating means, such as electric heaters 30. In a typical use of the invention, the curing die imparts sufficient heat to the lineal member to initiate cure of the resin.
  • the cure initiation temperature for a polyester resin is approximately 110°C (230 ⁇ F) . Since the curing die is in close contact with the lineal member passing through it, a significant amount of drag force is applied to the lineal member.
  • the lineal member As shown in FIG. 3, after the lineal member is passed through the curing die, it travels through curing chamber 32 which is maintained at a temperature substantially equal to or greater than the temperature of the resin at the exit end of the curing die.
  • the heat applied to the lineal member in the curing chamber is primarily accomplished through hot air convection heat transfer.
  • the hot air is supplied by any suitable heating means, such as heater 34, and driven by fan 36. It is to be understood that any other means for maintaining the temperature of the lineal member at a temperature sufficient to complete the cure can be used.
  • the curing chamber must be long enough and hot enough to enable the resin to be either completely cured or sufficiently advanced in cure so that the cure will be completed in the ambient plant conditions shortly after the lineal member exits the curing chamber.
  • the lineal member is supported in the curing chamber by a series of rollers, such as support rollers 38. It can be seen that the support rollers provide little, if any, substantial contact with the lineal member so that the drag force is not substantially increased. Any other suitable means for supporting the lineal member within the curing chamber can be used. It can be seen in FIG. 3 that the cross-sectional view of the lineal member shows that a substantial portion of the area is the porous core, and only a minor portion of the area is resin coating 40. Preferably, the porous portion of the cross-sectional area is at least 75% of the total cross-sectional area of the lineal member.
  • the porous core portion of the lineal member is at least 85% of the total cross-sectional area of the lineal member.
  • the density of the resin coating is in excess of 800 kg/m 3 (50 lbs./ft 3 ) .
  • the temperature of the resin will increase while the resin passes through the curing die from a entry temperature of about 93.3 ⁇ C (200 ⁇ F) to an exit temperature of about 154°C (310°F) .
  • the temperature of the hot gases in the curing chamber is preferably maintained within the range of from about 148.9"C (300 ⁇ F) to about 162.78"C (325 ⁇ F).
  • Porous-cored, resin-encased lineal members are often subjected to additional process steps which involve heating the lineal to temperatures as high as 60°C (140°F) and possibly as high as 82"C (180"F) or higher.
  • a subsequent process step for the lineal member is the painting process.
  • the lineal member is fed through paint die 42 and subsequently passes through paint oven 44 to produce painted lineal 46.
  • These processes are conventional in painting of glass fiber cored window lineals, for example. While in the paint oven, the lineal member will experience temperatures of approximately 93.3°C (200°F).
  • lineal member passing through the paint oven has uncured polyester resin in the resin coating, then the resin may offgas styrene, thereby creating bubbles and other surface defects in the surface of the lineal.
  • lineal members passing through a curing chamber according to the invention will have completely cured resin, and will not be subject to offgasing of styrene during a subsequent step, such as a painting process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP93922427A 1992-10-05 1993-09-29 Verfahren zum Herstellen eines geradlinigen Elements Withdrawn EP0619775A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95652492A 1992-10-05 1992-10-05
US956524 1992-10-05
PCT/US1993/009239 WO1994007682A1 (en) 1992-10-05 1993-09-29 Method for making a lineal member

Publications (1)

Publication Number Publication Date
EP0619775A1 true EP0619775A1 (de) 1994-10-19

Family

ID=25498332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93922427A Withdrawn EP0619775A1 (de) 1992-10-05 1993-09-29 Verfahren zum Herstellen eines geradlinigen Elements

Country Status (3)

Country Link
EP (1) EP0619775A1 (de)
JP (1) JPH07501996A (de)
WO (1) WO1994007682A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2299536A (en) * 1995-04-07 1996-10-09 Arnold Guettler Forming building products by continuously moulding about a travelling soft polymer core

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455807A (en) * 1945-09-11 1948-12-07 American Cyanamid Co Preparation of substituted cyanoguanidine
FR2541629B1 (fr) * 1983-02-24 1985-09-13 Singer Edouard Procede de stratification en continu et filiere pour la mise en oeuvre de ce procede
JPS61223023A (ja) * 1985-03-28 1986-10-03 Nitto Electric Ind Co Ltd エポキシ樹脂用硬化剤組成物
CA1247317A (en) * 1985-10-07 1988-12-28 Ronald R. Harris Structural member and method of making
ES2028359T3 (es) * 1987-09-02 1992-07-01 Ciba-Geigy Ag Procedimiento para la obtencion de cianoguanidinas oligomeras.
CA2000572A1 (en) * 1988-10-13 1990-04-13 Frank C. Beall Pultrusion system for condensation resin injection
GB9015149D0 (en) * 1990-07-10 1990-08-29 Shaw John Ltd Fibre reinforced plastic composites

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9407682A1 *

Also Published As

Publication number Publication date
JPH07501996A (ja) 1995-03-02
WO1994007682A1 (en) 1994-04-14

Similar Documents

Publication Publication Date Title
CA1324867C (en) Pultrusion/extrusion method and related articles
AU688203B2 (en) Pultrusion method and apparatus
US5492583A (en) Apparatus and method for in-line coating of pultrusion profiles
DE60110937T2 (de) Nicht isothermisches verfahren zum herstellen von hohlen verbundteilen
US5626700A (en) Method for forming reinforcing structural rebar by pultruding a core and molding thereover
US5876553A (en) Apparatus for forming reinforcing structural rebar
US5476627A (en) Composite molding process utilizing tackified fabric material
US6033510A (en) Method for fabricating composite structures using pultrusion processing
US4305449A (en) Method of and apparatus for fabricating filament reinforced metal matrix structures
EP0408161A2 (de) Verfahren zur Herstellung eines Hohlkörpers
US5384085A (en) Method of making graphite composite shafts
JPH05220745A (ja) 繊維に樹脂を含浸させた複合材料の製造方法、その装置及び製造された複合材料
EP0619775A1 (de) Verfahren zum Herstellen eines geradlinigen Elements
US20060045980A1 (en) Method and apparatus for application of a finish to a lineal product
GB2186833A (en) Pultrusion method
GB2245893A (en) Fibre reinforced plastic composites
RU2210501C1 (ru) Способ изготовления длинномерных профильных изделий из композиционных материалов и устройство для его осуществления
JPS6055296B2 (ja) 繊維強化樹脂構造体の製造法
JPH0137259B2 (de)
JPS5948120A (ja) 耐熱frp管の連続引抜成形方法
KR100359579B1 (ko) 세멘트재 압출성형의 창문틀의 표면쉬이트 래핑 성형장치및 그 창문틀
DE4300208A1 (de) Verfahren zur Herstellung von Hohlkörpern aus faserverstärkten Kunststoffen
EP2150396B1 (de) Verfahren zur umformung von profilen aus unidirektional faserverstärkten compositmaterialien während des fertigungsprozesses
JPH04312805A (ja) 不燃性材料を被覆した複合管の製造方法
DE2117042A1 (en) Vulcanising reinforced rubber tube - using electrically heated mandrel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19940803

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19950616