WO2005090041A2 - Moulage d'articles en plastique - Google Patents

Moulage d'articles en plastique Download PDF

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Publication number
WO2005090041A2
WO2005090041A2 PCT/GB2005/001129 GB2005001129W WO2005090041A2 WO 2005090041 A2 WO2005090041 A2 WO 2005090041A2 GB 2005001129 W GB2005001129 W GB 2005001129W WO 2005090041 A2 WO2005090041 A2 WO 2005090041A2
Authority
WO
WIPO (PCT)
Prior art keywords
moulds
process according
plastics
article
walled
Prior art date
Application number
PCT/GB2005/001129
Other languages
English (en)
Other versions
WO2005090041A3 (fr
Inventor
Peter Roger Aylmore
Simon Wiper
Original Assignee
3Dm Worldwide Plc
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
Priority claimed from GB0406216A external-priority patent/GB0406216D0/en
Application filed by 3Dm Worldwide Plc filed Critical 3Dm Worldwide Plc
Publication of WO2005090041A2 publication Critical patent/WO2005090041A2/fr
Publication of WO2005090041A3 publication Critical patent/WO2005090041A3/fr

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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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/18—Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • 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
    • B29C44/08—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 using several expanding or moulding steps
    • B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
    • B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity
    • 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
    • B29C44/146—Shaping the lining before foaming
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • B29C33/0016—Lost moulds, e.g. staying on the moulded object
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/34—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station
    • B29C33/36—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station continuously movable in one direction, e.g. in a closed circuit
    • 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
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules

Definitions

  • This invention relates to processes for the production of moulded plastics articles and mould apparatus for use in such processes, and to the products of such processes.
  • this invention relates to processes and apparatus for the moulding of plastic articles in which the finished product consists of two plastics skins spaced to either side of a core.
  • the finished product may comprise a composite element comprising a core of plastics material faced to one or both sides by a relatively thin walled material, which may not be plastics.
  • Reference is directed to WO2002/062550 which discloses processes in which complementary male and female moulds are contacted with a particulate plastics material which melts onto the surface of the mould to create a skin.
  • the male and female moulds are then brought together, after the skins have been made, to sandwich between the skins a core which may be of, for example, plastic filler or expandable foam, with or without various inserts and reinforcements.
  • a core which may be of, for example, plastic filler or expandable foam, with or without various inserts and reinforcements.
  • the processes described in WO2002/062550 enable the production of large size components with opposed moulded surfaces, and having selected structural, insulation etc. properties by virtue of suitable selection of the skins, the core material and the reinforcement or inserts.
  • Typical uses in the earlier document include the production of truck bodies, doors, table tops, boat hulls, aeroplane components, to name but a few. Particularly when dealing with large components, the size and weight of the moulds required can be relatively large; in a typical application, each mould part may weigh of the order of several hundred kilograms.
  • the mould According to conventional thinking, it is essential for the mould to be able to withstand high differential pressures during the moulding process, and so conventionally a relatively thick mould wall is used so that the mould wall is rigid, and typically provided with strengthening ribs for example by milling out of a suitable metal material.
  • the additional metal beyond the wall thickness this requires contributes to the mass which means that the walls have to be even thicker so as not to flex.
  • Such moulds are costly to produce.
  • the relatively high mass of the moulds creates difficulties, not only in terms of providing sufficient structural support, but also robotics and other conventional handling equipment needs to be rugged to cope with the high mass.
  • the mass of metal in the moulds means that they have a relatively high thermal capacity which means both that substantial amounts of heat need to be transferred into or out of the moulds to alter the temperature of the mould surface, but also heating and cooling of the mould takes a substantial amount of time.
  • the thermal and mass properties of the moulds mean that the temperature distribution at the moulding surfaces is significantly influenced by the mould structure rather than the heating pattern of the external mould heaters.
  • moulds include relatively thin-walled moulding portions.
  • the processes and apparatus described herein may be used in broader applications which comprise a single bulk plastics material, as will be evident.
  • this invention provides a process for the production of a moulded plastics article from a plastics particulate material having a melting point, said process comprising the steps of: i) providing first and second complementary moulds having moulding face portions for forming respective generally opposed surfaces of said plastics article, wherein at least one of said complementary moulds includes a relatively thin-walled region for defining at least part of the respective moulding face portion; ii) introducing plastics particulate material to contact at least one of said complementary moulds; iii) transmitting heat to the plastics particulate material via at least said relatively thin-walled region thereby causing said plastics material to melt to from a melted plastics material; iv) bringing together said first and second complementary moulds, and v) allowing said melted plastics material to cool to form said moulded plastics article.
  • the plastics particulate material may be in any suitable form such as for example powder, granules or pellets.
  • the term plastics material is to be understood broadly as meaning any material with a significant proportion thereof exhibiting at least in part properties associated with plastics materials and in particular thermoplastic materials. Thus the plastics material may be virgin or recycled and may be in a pure from or mixed with other materials.
  • this invention provides a process for the production of a moulded plastics article from a plastics particulate material having a melting point, said process comprising the steps of: i) providing first and second complementary moulds having moulding face portions for forming respective generally opposed surfaces of said moulded article, wherein at least one of said moulds includes a relatively thin-walled region generally of uniform thickness defining at least part of said face portion; ii) contacting the face portions with plastics particulate material; iii) transmitting heat to the contacting plastics particulate material in each of said moulds via at least said relatively thin-walled moulding regions, thereby to cause said plastics particulate material to melt to form a layer or skin, and iv) bringing together said first and second complementary moulds to allow formation of said moulded plastics article.
  • the process includes introducing a core material between the complementary moulds prior to bringing them together.
  • the core material may be a plastics material and/or filler material, reinforcing elements or reinforcing material etc.
  • the core material includes an expandable material, such as for example, a foamable plastics material, which foams to fill the enclosed space between the skins.
  • the core material could include recycled materials and in some instances mixed with other waste as a result of recycling or reclaiming.
  • the process may include a step of applying an external dimensional constraint to at least part of the external surfaces of said thin-walled moulding regions to resist the pressures generated during expansion of said expandable material.
  • the constraint may take various forms. It may comprise respective opposed support elements for applying external pressure to the or each thin- walled region.
  • the opposed support elements may comprise a series or run of rollers past which the first and second complementary moulds move.
  • the opposed support elements may comprise at least one endless conveyor belt.
  • the opposed support elements may comprise spaced upper and lower series of rollers or spaced upper and lower conveyor belts.
  • the constraint may be effected by causing the first and second complementary moulds to pass along respective generally parallel paths during expansion of said expandable material.
  • the first and second complementary moulds may each be one of a series of like moulds, each connected to respective first and second endless conveyor means.
  • one or both of the complementary moulds may include an integral or external reinforcement structure to resist local deformation of the associated moulding region.
  • one or both of the complementary moulds may include one or more reinforcing ribs.
  • the characteristics of the core material in the expansion phase such as its viscosity, the amount of the core material and associated foaming agent are selected such that, when fully expanded, little or no pressure is exerted on the complementary mould from within.
  • the moulds may be vented during at least part of the expansion phase to allow air and other gases to escape from the mould as the foamed material fills the space.
  • the heating of the moulds may take place before, during and/or after contacting with the plastics particulate material and the heating may be by various means such as infrared heaters and convection heaters.
  • the invention also extends to a mould for use in the above process, comprising a relatively thin-walled moulding portion.
  • the relatively thin-walled portion is of generally uniform thickness and may have a wall thickness of between 0.1 mm and 3 mm, and more preferably about 0.2 mm.
  • the thin-walled portion is capable of resilient flexing in use.
  • the relatively thin-walled portion may be made of a sheet material such as rolled steel or steel alloy sheet or it may be made of suitable refractory material.
  • the facing portions of the complementary moulds may be provided with a suitable mould-release coating.
  • the coating may be P.T.F.E.
  • the moulds may comprise a rigid outer frame or flange portion adapted for co-operation with the frame or flange portion on the other mould, with the frame or flange portions circumscribing a relatively thin-walled portion.
  • the moulded plastics article could be of the form comprising a core between two skins, or it could be a black of plastics material.
  • this invention provides a process for the production of a composite moulded plastics article from a plastics particulate material having a melting point, said process comprising the steps of: i) providing first and second complementary moulds having moulding face portions for forming respective generally opposed surfaces of said moulded article, wherein at least one of said moulds includes a relatively thin-walled region defining at least part of said face portion; ii) introducing plastics particulate material to at least one of said moulds; iii) transmitting heat to the plastics particulate material via at least said relatively thin-walled regions, thereby causing said plastics particulate material to melt to form a melted plastics material; v) bringing together said first and second complementary moulds; and allowing the melted plastics material and the relatively thin-walled regions to cool to form a moulded composite plastics
  • a composite moulded plastics article is produced in which said at least one thin walled region is bonded to the moulded plastics article.
  • Such composite moulded plastics articles have numerous applications where an integral bonded facing of sheet metal is required for structural, functional or decoration purposes, such as in construction, flooring or other industrial applications. Portions of the complementary moulds such as flange supports, may be removed after the moulding process is completed.
  • step (ii) comprises contacting the face portions with the plastics particulate material; step (iii) comprises transmitting heat to the contacting plastics particulate material in each of said moulds via at least said relatively thin-walled regions, thereby to cause said plastics particulate material to melt to form a layer or skin; step (iv) comprises bringing together said first and second complementary moulds to cause the respective skins to join together, and step (v) comprises allowing the skins and the relatively thin-walled moulding regions to cool to form a composite moulded plastics article in which at least one of said moulds is bonded to said composite plastics article.
  • the order of at least steps ii) and iii) is interchangeable.
  • the invention is not limited to embodiments in which a layer or skin is formed on the moulds.
  • a quantity of the plastics particulate material appropriate for the production of a solid moulded plastic article is added to one of the complementary moulds, and the first and second complementary moulds are brought together.
  • a sold, "bulk" moulded plastics article is produced.
  • step iv) would be performed before step iii) in such embodiments.
  • the composite article is partially encased in at least one of said thin-walled regions, and may be substantially fully encased between the opposed thin-walled regions. Whilst the invention has been described above, it extends to any inventive combination of the features set out above or in the following description.
  • Figure 1 is a general perspective view of one of a pair of complementary moulds in accordance with this invention for moulding a rectangular construction panel
  • Figure 2 is a cross-section taken on lines ll-ll of Figure 1
  • Figure 3 is a schematic view of the sequence of operation in a moulding processing in accordance with this invention, using the complementary moulds of Figure 1
  • Figure 4 is a schematic view of one form of dimensional constraint for the mould
  • Figure 5 is a schematic view of another form of dimensional constraint for the mould
  • Figure 6 is a schematic view of the upstream end of apparatus for implementing the processes of the invention
  • Figures 7(a) and (b) are schematic cross-sectional views through two different products in accordance with this invention.
  • the mould 10 in this example comprises a rigid outer rectangular structural frame 12 with locating pins 14.
  • the frame 12 supports and generally frames a thin-walled moulding portion 16 which is made of a pressed or drawn sheet metal such as steel.
  • the moulding portion 16 is capable of gentle resilient (i.e. plastic) deformation and is not rigid in its centre.
  • the metal sheet may typically be 0.1 mm to 3 mm thick.
  • the inner, moulding surface may in this example be coated with a suitable permanent release agent such as P.T.F.E.
  • the mould 10 is designed to be used with a complementary mould (not shown) to make up a pair.
  • a plastics particulate material 18 is then introduced into the mould cavity so as to contact the heated surfaces of the mould thereby to melt and form a continuous skin 20. After a dwell time of duration sufficient to create a skin 20 of the required thickness, excess particulate material is removed from the mould by any suitable method such as vacuuming, blowing or inversion, to leave each mould coated with molten plastic material to the required thickness.
  • a suitable foamable core material 22 is then loaded into one or both of the moulds, with the moulds then being closed fully to enclose the core material.
  • the material is heated to cause the foamable core material to expand to bond the skins in the complementary moulds both to each other and to the foamed core 24.
  • the air or gas originally in the space between the skins 20 is caused to vent out between the mating surfaces of the complementary moulds as the core material expands to fill the space.
  • the pressure that might otherwise build up within the mould and tend to distort the mould surfaces is allowed to dissipate. Not only does this reduce the tendency to distort the mould surfaces, but it also assists uniformity of the distribution of the core, avoiding a blow out when the sealed mould is opened, and also giving a visual indicator of the filling of the void.
  • a pin or other suitable duct or vent hole may be provided which allows the escape of gas as the core material expands.
  • the mould and its contents cool, which will usually involve active cooling by air, water, etc or process speed, the mould is opened to release the moulded product.
  • a substantial advantage of using a thin-walled mould is that the weight of the mould is considerably reduced, as is the thermal mass thereof and so the handling of the moulds as well as the energy and times required for raising or lowering the temperature in accordance with the required process temperatures is substantially reduced. For most products, depending on the nature of the core material, a pressure will be generated within the closed mould which tends to cause the thin-walls of the moulds to bow outwards.
  • an external dimensional constraint is applied to prevent, or at least reduce, the amount of bowing so that the moulded product can have generally flat sides if required.
  • the dimensional constraint is achieved by causing the closed mould to pass between an upper and a lower series of rollers 40,42 which maintain the upper and lower surfaces of the mould in the required alignment during the appropriate phases of the heating and cooling cycle, to achieve the required moulded product.
  • Figure 5 an alternative scheme is shown whereby the closed mould passes between opposed parallel runs of an upper and a lower conveyor 50,52. It will of course be appreciated that the thin-walled moulds may take many different shapes according to the nature of the required product.
  • the mould process may be used for complex three dimensional shaped products such as boat hulls, where a male and a female complementary mould define between them the required shape and variation in wall thickness of the intended item.
  • the thin-walled mould may include integral or external reinforcement in the form of one or more ribs, corrugations.
  • a conveyor device which may be in the form of a conveyor belt 60,62 or a conveyor chain designed to synchronise the movement of the mould halves.
  • the lower run of the conveyor 60 extends forwardly of the upper run 62 to provide heating 64 and filling stations 66 for the lower run of moulds.
  • the upper conveyor 62 also has heating, filling and removal stations 68,70,72. In use the conveyors are operated in synchronised fashion to heat, fill, remove excess material from the moulds to provide upper and lower skins on the complementary moulds which are then closed around a suitable core material 24.
  • Another major advantage is that the capital cost of the mould is considerably reduced, thereby allowing the cost of the production line to be reduced and/or a larger number of moulds to be used in the production line.
  • the moulded article after the moulded article has cooled sufficiently it is removed from the complementary moulds which are then re-used. However, in an important variation of this process, the mould is not opened to release a moulded product.
  • the mould is left in place during cooling to produce an article having a moulded plastics inner portion which is integrally bonded to the thin-walled portions 16, which function as outer facings. It is, however, within the scope of this example to remove a portion of the original mould.
  • the flange 12 can be advantageously removed from the article.
  • the process follows the general scheme shown in e.g. Figure 3 except that, at the final stage, instead of separating the complementary mould halves to release the product, only the rigid outer frame 12 is removed, leaving the thin-walled portions 14, as outer metal facings to the moulded product.
  • the thin-walled portions 14 and the plastics material may be suitably treated or coated to provide enhanced adhesive properties to resist delamination of the thin-walled portions.
  • Composite moulded plastics articles of the type described above have numerous applications. It is a particular advantage that relatively cheap plastics materials can be used to produce the bulk of the article, whilst the appearance of the article is defined by the external appearance of the moulds. Even relatively low quality plastics can be employed, especially as 'core material'. The use of recycled or reclaimed plastics is within the scope of the invention.
  • An example of an article of the invention is access flooring for offices and the like, enabling access to under floor cabling. Other examples will readily suggest themselves to the skilled reader.
  • Figure 7(a) is a cross section through an example of a moulded article made according to the first described process. It comprises a central foam core 70 sandwiched between outer skins 72.
  • Figure 7(b) is a cross section through an example of a moulded article made according to the second process. The inner part is similar to that of Figure 7(a), but there the retained thin-walled portions 14 are retained by bonding integrally to the adjacent plastics material during the melting/cooling cycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne le moulage d'articles en plastique au moyen d'un moule présentant des régions à parois relativement minces et définissant les surfaces du moule. L'invention concerne également les régions à parois minces en métal en feuille. Les moules peuvent être utilisés dans un procédé de moulage par impression électrique permettant de mouler des produits comprenant un noyau en plastique expansé pris en sandwich entre deux peaux de matériau plastique ou dans des procédés dans lesquels qu'il y a un matériau unique ou un mélange dans la section transversale. Dans un procédé, les articles moulés sont libérés des moules après le moulage mais dans un autre procédé les régions à parois minces sont retenues sur le produit fini, de manière à servir de faces liées d'une seule pièce au matériau plastique sous-jacent.
PCT/GB2005/001129 2004-03-19 2005-03-21 Moulage d'articles en plastique WO2005090041A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0406216.2 2004-03-19
GB0406216A GB0406216D0 (en) 2004-03-19 2004-03-19 Moulding plastics articles
US55578604P 2004-03-24 2004-03-24
US60/555,786 2004-03-24

Publications (2)

Publication Number Publication Date
WO2005090041A2 true WO2005090041A2 (fr) 2005-09-29
WO2005090041A3 WO2005090041A3 (fr) 2005-12-01

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PCT/GB2005/001129 WO2005090041A2 (fr) 2004-03-19 2005-03-21 Moulage d'articles en plastique

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8663515B2 (en) 2008-06-09 2014-03-04 Upcycle Holdings Limited Process for moulding plastic articles
US8801414B2 (en) 2010-03-25 2014-08-12 Simpet Holdings LLC Systems for forming aggregate materials from heat fusable powdered materials
US20150174626A1 (en) * 2012-06-13 2015-06-25 Rahul Nagpaul Product for waste electrical and electronic equipment re-utilization and process thereof
WO2017066238A1 (fr) * 2015-10-12 2017-04-20 Ppg Industries Ohio, Inc. Procédé et appareil de fabrication d'un vitrage d'aéronef polymère
GB2607352A (en) * 2021-06-04 2022-12-07 Avena Environmental Ltd Process for manufacturing a solid product

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Publication number Priority date Publication date Assignee Title
FR1462775A (fr) * 1965-02-06 1966-12-16 Ziemann G M B H A Récipient en matière synthétique et son procédé de fabrication
US3709650A (en) * 1970-11-05 1973-01-09 Electrohome Ltd Press for use in the molding of parts
US4574106A (en) * 1984-07-30 1986-03-04 Rogers Jimmy H Self molding fiberglas
US4755245A (en) * 1983-03-01 1988-07-05 Societe Nouvelle Raffinerie Meridionale De Ceresines Method for conditioning a permanent adhesive composition in the form of blocks or sections
US4773844A (en) * 1985-06-05 1988-09-27 Ymos Aktiengesellschaft Industrieprodukte Apparatus for producing a synthetic resin skin
WO2002062550A1 (fr) * 2001-02-05 2002-08-15 3Dm Technologies, Inc. Procedes pour former des plastiques, appareils pour former des plastiques et articles formes a partir de ces derniers
US20040007798A1 (en) * 2002-04-30 2004-01-15 Kreager Andrew S. Polymer blends for tip molding process and method of forming a plastic part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1462775A (fr) * 1965-02-06 1966-12-16 Ziemann G M B H A Récipient en matière synthétique et son procédé de fabrication
US3709650A (en) * 1970-11-05 1973-01-09 Electrohome Ltd Press for use in the molding of parts
US4755245A (en) * 1983-03-01 1988-07-05 Societe Nouvelle Raffinerie Meridionale De Ceresines Method for conditioning a permanent adhesive composition in the form of blocks or sections
US4574106A (en) * 1984-07-30 1986-03-04 Rogers Jimmy H Self molding fiberglas
US4773844A (en) * 1985-06-05 1988-09-27 Ymos Aktiengesellschaft Industrieprodukte Apparatus for producing a synthetic resin skin
WO2002062550A1 (fr) * 2001-02-05 2002-08-15 3Dm Technologies, Inc. Procedes pour former des plastiques, appareils pour former des plastiques et articles formes a partir de ces derniers
US20040007798A1 (en) * 2002-04-30 2004-01-15 Kreager Andrew S. Polymer blends for tip molding process and method of forming a plastic part

Cited By (10)

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US8663515B2 (en) 2008-06-09 2014-03-04 Upcycle Holdings Limited Process for moulding plastic articles
EP2285544B1 (fr) * 2008-06-09 2019-11-06 Upcycle Holdings Limited Procédé pour mouler des articles en matière plastique
US8801414B2 (en) 2010-03-25 2014-08-12 Simpet Holdings LLC Systems for forming aggregate materials from heat fusable powdered materials
US9522491B2 (en) 2010-03-25 2016-12-20 Simpet Holdings LLC Systems for forming aggregate materials from heat fusable powered materials
US20150174626A1 (en) * 2012-06-13 2015-06-25 Rahul Nagpaul Product for waste electrical and electronic equipment re-utilization and process thereof
WO2017066238A1 (fr) * 2015-10-12 2017-04-20 Ppg Industries Ohio, Inc. Procédé et appareil de fabrication d'un vitrage d'aéronef polymère
EP3659777A1 (fr) * 2015-10-12 2020-06-03 PPG Industries Ohio, Inc. Appareil de fabrication d'un panneau de fenêtre d'avion en polymère
US11110634B2 (en) 2015-10-12 2021-09-07 Ppg Industries Ohio, Inc. Method and apparatus for making a polymeric aircraft window panel
GB2607352A (en) * 2021-06-04 2022-12-07 Avena Environmental Ltd Process for manufacturing a solid product
GB2607352B (en) * 2021-06-04 2024-04-03 Avena Environmental Ltd Process for manufacturing a solid product

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