GB2607025A - A mouldable oven proof article - Google Patents

A mouldable oven proof article Download PDF

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Publication number
GB2607025A
GB2607025A GB2107319.2A GB202107319A GB2607025A GB 2607025 A GB2607025 A GB 2607025A GB 202107319 A GB202107319 A GB 202107319A GB 2607025 A GB2607025 A GB 2607025A
Authority
GB
United Kingdom
Prior art keywords
mixture
article
moulded
unsaturated polyester
weight
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.)
Pending
Application number
GB2107319.2A
Other versions
GB202107319D0 (en
Inventor
Goodchild Richard
Lam Alex Chu Ying
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.)
Creative Retail Display Ltd
Original Assignee
Creative Retail Display Ltd
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 Creative Retail Display Ltd filed Critical Creative Retail Display Ltd
Priority to GB2107319.2A priority Critical patent/GB2607025A/en
Publication of GB202107319D0 publication Critical patent/GB202107319D0/en
Publication of GB2607025A publication Critical patent/GB2607025A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
    • A47J37/0664—Accessories
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/01—Vessels uniquely adapted for baking
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/10—Frying pans, e.g. frying pans with integrated lids or basting devices
    • A47J37/106—Integrated basting devices
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/40—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • 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
    • B29K2509/00—Use of inorganic materials not provided for in groups B29K2503/00 - B29K2507/00, as filler
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/06—Unsaturated polyesters

Abstract

A method for producing a polymer suitable for use as a mouldable oven proof polymer, comprising exposing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide to elevated temperature and pressure for a predetermined time. Also disclosed is a moulded ovenproof article comprising the polymer. Further disclosed is a moulded article which is compression moulded; and an apparatus for producing an oven proof article comprising use of the mouldable oven proof polymer.

Description

A MOULDABLE OVEN PROOF ARTICLE
The present invention relates to a method for producing a mouldable oven proof article, and a moulded oven proof article.
BACKGROUND OF INVENTION
Moulded polymers are used in a range of articles, for example kitchen articles such as plates, trays and utensils. Over time however, these products can lose their shape and become weak, There is a need for a moulded polymer product which can withstand much higher temperatures than conventional moulded polymers.
There is also a need for a moulded polymer which is more durable and able to retain its shape for longer.
SUMMARY OF INVENTION
According to a first aspect, there is provided a method for producing a moulded oven proof article, the method comprising: exposing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide to elevated temperature and pressure for a predetermined time period.
The term "oven proof' is used herein to refer to an article which is capable of withstanding temperature ranges of an oven.
The unsaturated polyester preferably comprises repeating units having the formula: [C6H5CHCH2]n.
Preferably, the mixture comprises particles composed of unsaturated polyester, calcium carbonate and silicone dioxide. The particles may have any suitable size.
Preferably, the particles have a particle size (an average particle size) of at least 1000 pm, preferably at least 2000 pm, preferably at least 5000 pm The mixture may be exposed to any suitable elevated predetermined temperature sufficient to produce the mouldable oven proof article In one embodiment, the elevated temperature is at least 100°C, preferably at least 120°C, for example at least 140°C. In one embodiment, the elevated temperature is no more than 200°C, preferably no more than 180°C, for example no more than 160°C.
In one embodiment, the elevated temperature is in the range of from 100°C to 200°C, preferably in the range of from 120°C to 180°C, preferably in the range of from 140°C to 160°C.
The mixture may be exposed to any suitable elevated pressure sufficient to produce the mouldable oven proof polymer.
In one embodiment, the elevated pressure is at least 10 MPa, preferably at least 50 MPa, preferably at least 100 MPa. In one embodiment, the elevated pressure is no more than 250 MPa, preferably no more than 200 MPa, for example no more than 150 MPa. In one embodiment, the elevated pressure is in the range of from 10 to 250 MPa, preferably in the range of from 50 to 200 MPa, preferably in the range of from 100 MPa to 150 MPa.
The elevated temperature and pressure are selected to cure the mixture to form a moulded oven proof article.
In one embodiment, the mixture of unsaturated polyester, calcium carbonate and silicone dioxide is exposed to elevated temperatures prior to being exposed to elevated pressure.
In one embodiment, the method comprises injection moulding or compression moulding of the mixture.
The method preferably comprises: depositing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide in a mould; and exposing the mixture to elevated predetermined temperature and pressure for a predetermined time period.
Preferably, the method comprises: exposing the mixture to an elevated predetermined temperature for a first predetermined time period; and subsequently exposing the mixture to an elevated pressure for a predetermined second time period The elevated temperature and the first predetermined time period are preferably sufficient to allow the mixture to soften and to become pliable. The softened mixture is preferably subsequently exposed to a predetermined pressure, for example in the form of a compression tool for compression moulding or by injection moulding, to shape the softened mixture into a predetermined shape, that is to conform to the shape of the mould.
The first and/or second predetermined time period may be any suitable time period. Preferably, the first and/or second predetermined time period is at least 10 minutes, preferably at least 30 minutes, preferably at least 1 hour. The first and second predetermined time periods may be equal.
The method preferably comprises: depositing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide in a reservoir; exposing the mixture to elevated predetermined temperature; and either: feeding the heated mixture into a mould under predetermined pressure; or introducing the heated mixture into a mould and subjecting the heated mixture to predetermined pressure.
The method may further comprise cooling the mould.
The silicone dioxide is preferably present within the mixture as glass fibres.
The silicone dioxide, for example glass fibre, is preferably uniformly distributed within the mixture and/or within the resultant moulded article.
According to a further aspect there is provided an apparatus for producing an oven proof article, the apparatus comprising: a reservoir comprising a mixture of unsaturated polyester, calcium carbonate and silicone dioxide; a mould for receiving the mixture from the reservoir; a heat source operable to provide heat to the mould or the reservoir; a compression tool operable to expose the mixture within the mould to elevated pressure The apparatus is preferably a compression moulding apparatus. The compression tool may for example be a clamping press.
According to a further aspect, there is provided an apparatus for producing an oven proof article, the apparatus comprising: a reservoir comprising a mixture of unsaturated polyester, calcium carbonate and silicone dioxide; a mould; a feed path extending between the reservoir and the mould; a heat source operable to provide heat to the feed path; and a pressure mechanism operable to subject heated mixture within the feed path to an elevated predetermined pressure and to drive the heated mixture into the mould.
Preferably, the apparatus is an injection moulding apparatus.
The mixture when exposed to elevated temperatures has been found to have good fluidity and operability.
The present invention provides a durable, oven proof article which is capable of withstanding higher temperatures than conventional polymer based articles.
The resultant article has been found to have excellent surface smooth properties and good surface brightness.
The mixture preferably comprises at least 1 % by weight, preferably at least 5% by weight, for example at least 10% by weight of silicone dioxide. The mixture preferably comprises no more than 50% by weight, preferably no more than 40% by weight, for example no more than 20% by weight of silicone dioxide. The mixture preferably comprises between 1 c./0 and 50% by weight, preferably between 5 c./0 and 40 % by weight, preferably between 10 % and 20 % by weight, for example about 15 % by weight of silicone dioxide.
The mixture preferably comprises no more than 99% by weight, preferably no more than 95% by weight, for example no more than 90% by weight of unsaturated polyester. The mixture preferably comprises at least 50% by weight, preferably at least 60% by weight, for example at least 70% by weight of unsaturated polyester. The mixture preferably comprises between 50 % and 99% by weight, preferably between 60 % and 95 % by weight, preferably between 70 % and 90 % by weight of unsaturated polyester.
The mixture preferably comprises at least 0.1 % by weight, preferably at least 1% by weight, for example at least 5% by weight of calcium carbonate. The mixture preferably comprises no more than 30% by weight, preferably no more than 20% by weight, for example no more than 10% by weight of calcium carbonate. The mixture preferably comprises between 0.1% and 30% by weight, preferably between 1% and 20 % by weight, preferably between 5% and 10% by weight of calcium carbonate.
In one embodiment, the mixture consists of unsaturated polyester, calcium carbonate and silicone dioxide.
According to a further aspect of the present invention, there is provided a moulded ovenproof article formed by the method as herein described.
According to a further aspect of the present invention, there is provided a moulded ovenproof article composed of moulded oven proof polymer formed from a mixture of unsaturated polyester, calcium carbonate and silicone dioxide.
The moulded ovenproof article preferably comprises glass fibre.
The article preferably comprises at least 1 % by weight, preferably at least 5% by weight, for example at least 10% by weight of glass fibre. The mixture preferably comprises no more than 50% by weight, preferably no more than 40% by weight, for example no more than 20% by weight of glass fibre. The mixture preferably comprises between 1 % and 50% by weight, preferably between 5 % and 40 % by weight, preferably between 10 % and 20 % by weight, for example about 15 % by weight of glass fibre The article is preferably compression moulded or injection moulded.
The article may be any suitable article such as, but not to be limited to, a tray, a dish, a bowl, kitchen utensils, container, polymeric cleaning products, coatings.
Embodiments of the present invention will now be described in further detail in relation to the accompanying Figures.
BRIEF DESCRIPTION OF FIGURES
Figure 1 is a perspective view from above of one embodiment of the moulded ovenproof article of the present invention; Figure 2 is a view from above and a side view of a further embodiment of the moulded ovenproof article of the present invention; Figure 3 is a view from above and a side view of a further embodiment of the moulded ovenproof article of the present invention; Figure 4 is a view from above and a side view of a further embodiment of the moulded ovenproof article of the present invention; Figure 5 is a view from above and a side view of a further embodiment of the moulded ovenproof article of the present invention; Figure 6 is a view from above and a side view of a further embodiment of the moulded ovenproof article of the present invention; Figure 7 is a view from above of a further embodiment of the moulded ovenproof article of the present invention; and Figure 8 is a flowchart of the method of producing the article of any one of Figures 1 to 7.
DETAILED DESCRIPTION
With reference to Figure 1 there is provided a moulded ovenproof dish 1. The dish 1 is substantially rectangular in shape. It is however to be understood that the dish 1 could have any suitable shape and dimensions as shown in Figures 2 to 6. It is also to be understood that the present invention can produce any suitable ovenproof articles and is not limited to dishes. For example, Figure 7 illustrates one embodiment of the present invention where the article is a lid.
With reference to Figure 8, the dish 1 is fon-ned from a mixture of unsaturated polyester, for example the unsaturated polyester has the formula: [C6H5CHCH2]n, calcium carbonate and silicone dioxide (101). The mixture may have any suitable ratios and/or % weight of each of the unsaturated polyester, calcium carbonate and silicone dioxide. Preferably, the mixture comprises at least 50% weight of the unsaturated polyester.
The mixture preferably comprises at least 1% weight of the silicone dioxide and at least 0.1 % weight of the calcium carbonate.
The mixture is heated to a predetermined elevated temperature (102), for example to a temperature of between 140°C and 160°C for a first predetermined time period. The time period is sufficient to allow the mixture to soften. The time period may for example between 1 minute and 1 hour. Once the mixture has softened and become pliable the heated mixture is transferred to a mould (103). A compression tool is guided into the mould operable to exert an elevated pressure to the mixture. Pressure is applied to the mixture for a second predetermined time period (104).
The compression tool is removed, and the resultant moulded ovenproof article has been produced. It has been found that the article has improved surface smooth properties and surface brightness compared to conventional ovenproof products formed from polymers. The lifespan of the article is also increased encouraging the user to reuse the article over and over and thereby reducing waste.
Ideally a powder coating is applied. This allows the moulding and painting of units in one single operation to provide high quality surfaces with an aesthetically attractive appearance. The powder coating therefore forms a chemical bond with the product surface. In addition, and importantly awkward corners, in-lays and indents receive an even coating.
Notably the pattern and texture of the mould are exactly transferred to the product with a new colour. This solves the so-called pinhole problem and serves as a super primer for various components. Surfaces coated with the powder coating are therefore protected from impact of external factors for the longest possible time.
Results of accelerated UV B-313 tests over 5,000 hours show that fibre blooming caused by UV rays and humidity in the air is prevented by the powder coating. It also offers an added value to products which allows them to be conductive, food contact safe, antibacterial, hygienic, fire retardant and with anti-graffiti properties.
The article has been found to display the following properties: Property Shrinkage -0.04±0.04% Thermal deformation temperature HDT 220°C Flexural strength 900 f/cm 2 Flexural module 110000 f/cm2 Water absorption < 0 1% Impact Strength 10 f cm/cm Curing time 65 ± 5 sec Arc Resistance 180 sec Resistance voltages 15.0 Kv/mm Volume resistance 1014 ocm Pasteurized hardness 40-50 The invention has been described by way of examples only and it will be appreciated that variation may be made to the aforementioned embodiments without departing form the protection as defined by the claims.

Claims (17)

  1. CLAIMSA method for producing a mouldable oven proof polymer, the method comprising: exposing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide to elevated temperature and pressure for a predetermined time period.
  2. 2. A method as claimed in claim 1, in which the unsaturated polyester has the formula: [C6H5CHCH2]n.
  3. 3. A method as claimed in either of claims 1 or 2, in which the mixture is exposed to a temperature of at least 140°C.
  4. 4. A method as claimed in any one of claims 1 to 3, in which the mixture is exposed to a temperature of no more than 160°C.
  5. 5. A method as claimed in any preceding claim, further comprising depositing a mixture of unsaturated polyester, calcium carbonate and silicone dioxide in a mould prior to exposing the mixture to elevated temperature and pressure.
  6. 6. A method as claimed in any one of claims 1 to 5, in which the mixture of unsaturated polyester, calcium carbonate and silicone dioxide is exposed to elevated temperatures prior to being exposed to elevated pressure.
  7. 7. A method as claimed in claim 6, comprising exposing the mixture to an elevated predetermined temperature for a first predetermined time period; and subsequently exposing the mixture to an elevated pressure for a predetermined second time period.
  8. 8. A method as claimed in any preceding claim, in which the method comprises compression moulding.
  9. 9. A method as claimed in any preceding claim, in which the pressure is at least 10 MPa.
  10. 10. A method as claimed in any preceding claim, in which the predetermined time period is at least 10 minutes.
  11. 11. A method as claimed in any preceding claim, in which the predetermined time period is at least 1 hour.12. A method as claimed in any preceding claim, in which the mixture comprises at least 5% by weight of silicone dioxide.11. A method as claimed in any preceding claim, in which the mixture comprises at least 50% unsaturated polyester.
  12. 12. A moulded ovenproof article formed by the method as claimed in any one of claims 1 to 11.
  13. 13. A moulded ovenproof article composed of moulded oven proof polymer formed from a mixture of unsaturated polyester, calcium carbonate and silicone dioxide.
  14. 14. A moulded ovenproof article as claimed in either of claims 12 or 13, comprising glass fibre.
  15. A moulded ovenproof article as claimed in claim 14, in which the article comprises at least 5% by weight glass fibre.
  16. 16. An article as claimed in either of claims 10 or 11, in which the article is compression moulded.
  17. 17. An apparatus for producing an oven proof article, the apparatus comprising: a reservoir comprising a mixture of unsaturated polyester, calcium carbonate and silicone dioxide; a mould for receiving the mixture from the reservoir; a heat source operable to provide heat to the mould or the reservoir; a compression tool is operable to expose the mixture within the mould to an elevated pressure.
GB2107319.2A 2021-05-21 2021-05-21 A mouldable oven proof article Pending GB2607025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2107319.2A GB2607025A (en) 2021-05-21 2021-05-21 A mouldable oven proof article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2107319.2A GB2607025A (en) 2021-05-21 2021-05-21 A mouldable oven proof article

Publications (2)

Publication Number Publication Date
GB202107319D0 GB202107319D0 (en) 2021-07-07
GB2607025A true GB2607025A (en) 2022-11-30

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ID=76637763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2107319.2A Pending GB2607025A (en) 2021-05-21 2021-05-21 A mouldable oven proof article

Country Status (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501829A (en) * 1975-10-30 1978-02-22 Sir Soc Italiana Resine Spa Moulding compositions including an unsaturated polyester
US4211686A (en) * 1976-02-12 1980-07-08 Hitachi, Ltd. Unsaturated polyester resin composition for use in pressure molding
US5447676A (en) * 1992-10-19 1995-09-05 Takeda Chemical Industries, Ltd. Low-pressure and low-temperature moldable composition and shaped article therefrom
US9695289B1 (en) * 2016-03-15 2017-07-04 Doskocil Manufacturing Company, Inc. Bulk molding compound-based pet bowl
CN110183788A (en) * 2019-06-26 2019-08-30 保定威尔达节能科技有限公司 A kind of fire prevention styrofoam and its production technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501829A (en) * 1975-10-30 1978-02-22 Sir Soc Italiana Resine Spa Moulding compositions including an unsaturated polyester
US4211686A (en) * 1976-02-12 1980-07-08 Hitachi, Ltd. Unsaturated polyester resin composition for use in pressure molding
US5447676A (en) * 1992-10-19 1995-09-05 Takeda Chemical Industries, Ltd. Low-pressure and low-temperature moldable composition and shaped article therefrom
US9695289B1 (en) * 2016-03-15 2017-07-04 Doskocil Manufacturing Company, Inc. Bulk molding compound-based pet bowl
CN110183788A (en) * 2019-06-26 2019-08-30 保定威尔达节能科技有限公司 A kind of fire prevention styrofoam and its production technology

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Publication number Publication date
GB202107319D0 (en) 2021-07-07

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