MX2010013990A - Recipiente moldeado que tiene capa de espuma. - Google Patents
Recipiente moldeado que tiene capa de espuma.Info
- Publication number
- MX2010013990A MX2010013990A MX2010013990A MX2010013990A MX2010013990A MX 2010013990 A MX2010013990 A MX 2010013990A MX 2010013990 A MX2010013990 A MX 2010013990A MX 2010013990 A MX2010013990 A MX 2010013990A MX 2010013990 A MX2010013990 A MX 2010013990A
- Authority
- MX
- Mexico
- Prior art keywords
- plastic
- preform
- polymer
- blow molded
- foam
- Prior art date
Links
- 239000006260 foam Substances 0.000 title claims description 17
- 239000007789 gas Substances 0.000 claims description 29
- 239000004033 plastic Substances 0.000 claims description 22
- 229920003023 plastic Polymers 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 11
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 11
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000071 blow moulding Methods 0.000 claims description 5
- 210000000497 foam cell Anatomy 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims 1
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- BLCTWBJQROOONQ-UHFFFAOYSA-N ethenyl prop-2-enoate Chemical class C=COC(=O)C=C BLCTWBJQROOONQ-UHFFFAOYSA-N 0.000 claims 1
- 238000005187 foaming Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 238000003303 reheating Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229930182558 Sterol Natural products 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 241000153282 Theope Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 1
- 235000018417 cysteine Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000003432 sterols Chemical class 0.000 description 1
- 235000003702 sterols Nutrition 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
-
- 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
- B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1684—Injecting parison-like articles
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- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
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- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
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- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
- B65D81/3837—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container in the form of a bottle, jar or like container
- B65D81/3846—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container in the form of a bottle, jar or like container formed of different materials, e.g. laminated or foam filling between walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/08—Injection moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C2045/1722—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles injecting fluids containing plastic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
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- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
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- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
- B29C2949/0772—Closure retaining means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/30—Preforms or parisons made of several components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Landscapes
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Abstract
Se revela una preforma moldeada y un recipiente moldeado por soplado a partir de la misma, en donde la preforma moldeada y el recipiente moldeado incluyen una capa de espuma externa.
Description
RECIPIENTE MOLDEADO QUE TIENE CAPA DE ESPUMA
CAMPO DE LA INVENCION
La presente invención es concerniente en g cipiente de plástico que tiene una capa de espu cular, la invención es concerniente con un rec ico en multicapas moldeado que incluye por lo de espuma, en donde las celdas de espuma contien rbono o nitrógeno.
ANTECEDENTES DE LA INVENCIÓN
Las botellas en multicapas orientadas bi n ser manufacturadas a partir de materiales d como por ejemplo tereftalato de polietil zando un proceso de preforma en caliente, en ' rma en multicapas es calentada a su tempe tación deseada y estirada y soplada en conformid
Las varias capas de plástico en los recip capas del arte previo están en general en conta sí, facilitando mediante esto la conducción ea a través de las paredes de los recipien te que el contenido enfriado del recipiente s amente a la temperatura ambiente. Así, tales r envueltos frecuentemente en, por ejemplo una c stireno alveolar para impartir propiedades de a co al recipiente.
Sería deseable preparar un recipiente en i iene propiedades de aislamiento térmico mejorada
BREVE DESCRIPCIÓN DE LAS FIGURAS
Las anteriores, también como otras venta nte invención, se harán más fácilmente evide llos experimentados en el arte a partir de la íente moldeado formado a partir de la preforma m gura 1 de acuerdo con una modalidad de la invenci
La Figura 4 es una ilustración esquemáti so para la preparación de la preforma moldea a 1 y el recipiente moldeado de la Figura 3 de a modalidad de la invención.
BREVE DESCRIPCIÓN DE LA INVENCIÓN
Concordante y congruente con la presente a descubierto un recipiente moldeado que e edades resumidas anteriormente .
El recipiente moldeado comprende: una prime ico y una segunda capa de plástico que se pone e la primera capa, la segunda capa de plástico fo spuma .
Una modalidad de la invención es concerníe íente que comprende una primera capa de plást da capa de plástico que se pone en contacto con la segunda capa de plástico formada como una las celdas de espuma contienen dióxido de geno .
. Las primeras y segundas capas de plástico mismas o diferentes en composición, espesor, or Además, la invención contempla un recipiente qu uier número (por ejemplo, mayor de 1) de ico, en tanto que por lo menos una de las ico comprenda una espuma. Además, la invención so de una capa de plástico de espuma celular en s de espuma contienen no solamente dióxido de ca én uno o más de otros gases .
Plásticos apropiados a partir de los c car estructuras de espuma celulares, en lo yen nitrógeno, argón y los semejantes. Preferibl dad de dióxido de carbono presente en las celdas de aproximadamente 4% a aproximadamente 8% lemente hasta 10% en peso. La capa de espuma nte térmico efectivo para retardar la cond ia térmica de la atmósfera a la bebida enfriada íente.
El recipiente de multicapas puede ser pr r de una preforma en multicapas mediante té o por soplado convencionales. La capa de pi a celular puede ser preparada co-extensamente c de plástico mediante por ejemplo un proces sión o la primera capa de plástico puede ser ap ida por la capa de plástico de espuma en un o por inyección de multi-etapas .
de hojuelas poliméricas usadas, la energía su ornillo del extrusor, etc. Como ejemplo, PET es ncionalmente a una temperatura de aproximadament imadamente 290°C. Un gas no reactivo es inyec ón a la zona de mezcla del extrusor, para mente el atrapamiento del gas como huecos micro o del material polimérico. El término "gas no es usado en la presente significa un ga 'ancialmente inerte frente al polímero. Gases no ridos comprenden dióxido de carbono, nitrógeno én como mezclas de estos gases entre sí o con ot
Es bien conocido que la densidad de PET am gramos por centímetro cúbico .. También es conoc dad de PE en la fase fundido es aproximadame s por centímetro cúbico. Así, si la cavidad de preforma es llenada completamente con PET fundi de presión de empaque del ciclo de moldeo por el fin de asegurar que la preforma fabricada o por inyección esté llenada apropiadamente y da. La fase de presión de empaque de la ope o por inyección . es así mismo usada para éricos diferentes a PET.
De acuerdo con la presente invención, sin e rma polimérica es moldeada por inyección y simul ada utilizando un gas no reactivo. El gas es arr aterial durante la fase de inyección. Contrario oldeo por inyección del arte previo, en donde érico adicional es inyectado durante la fase d esente invención utiliza mínima presión de empaq aterial polimérico está todavía en estado fu ón parcial del gas no reactivo es suficiente par iberación del gas disuelto del polímero a la fase Así, el gas no reactivo atrapado es . retenido paredes de la preforma . polimérica. Esta amiento es crítica para el proceso de la invenci ciona el polímero y conserva sus propiedades la preparación exitosa de un recipiente mol do. Esta etapa de enfriamiento es también necesa plean polímeros tales como poliésteres, que no ados por soplado directamente de un parison extr de enfriamiento puede ser efectuada mediante so convencional usado en el arte de formación de como por ejemplo al hacer pasar una corriente enfriamiento sobre las superficies de la p amiento de la preforma en tanto que está en nte enfriamiento del molde de formación.
La preforma es después de esto recalent ratura mayor que la temperatura de reblandeci
temperatura de transición «vitrea o mantenid ratura mayor que su temperatura de reblandecimie do de tiempo excesivo, el PET indeseablemente c alizar y volverse blanco. Asi mismo, si la p tada a una temperatura por encima de la edades mecánicas del material son excedidas por mentada del gas no reactivo en las micro-ce -celdas indeseablemente comenzarán a rsionando asi la preforma.
Finalmente, la preforma es moldeada por sop rar un recipiente, que consiste esencialmen ero espumado micro-celular que tiene un gas n enido dentro de las celdas de espuma micro- os y aparatos para el moldeo por soplado de un tir de una preforma polimerica son bien conocido
Aquel de habilidad ordinaria en el arte La Figura 2 es una preforma moldeada 18 una modalidad de la invención. Para formar la ada 18, una preforma 14 apta para ser mo sta, como se muestra en la Figura 1, la prefo cada mediante moldeo por inyección de un ma ico tal como por ejemplo tereftalato de polieti zando procesos y equipo conocidos en el arte.
La preforma 14 es luego moldeada con un lar 16 para formar la preforma moldeada 18. L ada 18 incluye una capa interna formada a par rma 14 y una capa de espuma externa formada de ar 16. Plásticos apropiados a partir de los ial alveolar 16 puede ser preparado incluyen per ados necesariamente a poliésteres, ésteres onitrilo, cloruro de vinilo, poliolefinas , pol semejantes, también como derivados, combinació
ción de multi-etapas . La preforma moldeada 18 da en el mismo molde en el cual la prefo cada al utilizar el proceso de moldeo por iny -etapas o la ^preforma 14 puede ser transfer do molde para la etapa de moldeo al usar un p o por inserción. El espesor y área superf ial alveolar 16 moldeado sobre la preforma 14 v a las consideraciones de diseño tales como encia deseada del recipiente moldeado 20.
En seguida, la preforma moldeada 18 es mol do para formar el recipiente moldeado 20 que alveolar externa y una capa no alveolar interna ra en la Figura 3. El recipiente moldeado 20 do mediante técnicas de moldeo por soplado conve como moldeo por soplado de estiram entamiento .
sor. Comúnmente, la temperatura de la corriente érico descargada del extrusor fluctúa de aprox a aproximadamente .325°C. El experimentado e iará que la temperatura de la corriente d érico será determinada por varios factores, en yen la clase de hojuelas poliméricas usadas, 1 istrada al +++ del extrusor, etc. Como ejemplo, ido convencionalmente a una temperatura de aprox a aproximadamente 290°C. Un gas no reactivo es presión a la zona de mezcla del extrusor, par mente el atrapamiento del gas como huecos micro o del material polimérico. El término wgas no es usado en la presente significa un ga ancialmente inerte frente al polímero. Gases no ridos comprenden dióxido de carbono, nitrógen én como mezclas de estos gases entre sí o con ot s por centímetro cúbico. Así, si la cavidad de preforma es llenada completamente con PET fundi te enfriar, la preforma resultante no exhibirí iado y tendría muchas deficiencias serias, t s de hundimiento. La literatura de moldeo por arte previo enseña que, con el fin de- des encia en densidades del PET amorfo y fundido,, u dad de material polimérico debe ser agregada a és que la cavidad ha sido llenada y a medi ial. se enfría. Esta es llamada la presión de emp imadamente 10% más material debe ser agregado de presión de empaque del ciclo de moldeo por el fin de asegurar que una preforma fabricada o por inyección sea llenada apropiadamente menté. La fase de presión de empaque de la op o por inyección es así mismo usada para estado fundido, la presión parcial del gas no r íente para permitir la liberación del gas dis ero a la fase de gas en donde forma la estr a micro-celular. Así, la preforma moldeada 18 el proceso de la invención pesa menos que, pero forma y geometría como, las preformas p cidas por las operaciones de moldeo por ncionales que emplean el proceso de empaque.
Después de la consumación de la etapa de ción, la preforma moldeada 18 es emplead eratura menor que la temperatura de reblandeci ero. Por ejemplo, la temperatura de reblandecim es aproximadamente 70°C. Así, el gas no reactiv etenido dentro de las paredes de la preforma mo etapa de enfriamiento es crítica para el proc ción, ya que acondiciona el polímero y con rma moldeada 18 en tanto que está en el molde amiento del molde de formación.
La preforma moldeada 18 es después entada a una temperatura mayor que la tempe ndecimiento del polímero. Esta etapa puede ser nte medios bien conocidos, tales como por ejempl ición de la preforma moldeada 18 a una corrient nte, mediante choque de flama, mediante exp ía infrarroja, al hacer pasar la preforma mold s de un horno convencional o los semejantes. El al recalentado a una temperatura de 20 a 25 a de su temperatura de reblandecimiento para la oldeo por soplado subsecuente. Si el PET es r nte por encima de su temperatura de transición nido a una temperatura mayor que su tempe ndecimiento por un periodo de tiempo excesiv lar micro-celular que tiene un gas no reactivo o de las capas de espuma micro-celulares. tos para el moldeo por soplado de un recipiente a preforma polimérica son bien conocidos.
Además de los gases preferidos, las mi n contener otros gases usados comúnmente en pro car estructuras de espuma micro-celulares. A a micro-celular actúa como aislante térmico efec dar la conducción de energía térmica de la atmós a carbonatada enfriada dentro del recipiente.
A partir de la descripción anterior, el exp l arte puede indagar fácilmente las carac íales de la invención y sin desviarse de su e ce, puede efectuar varios cambios y modificaci ar la invención a varios usos y condiciones.
Claims (1)
- REIVINDICACIONES 1. Un recipiente moldeado por soplado car e comprende: una capa interna de plástico apropiada p oplado y una capa externa de plástico apropiada para soplado que se pone en contacto con la capa i externa de plástico formada como una espuma, en ias de espuma contienen uno de dióxido de geno . 2. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque la ca lástico comprende un plástico seleccionado del iste de poliésteres, ésteres ácidos de acri ros de vinilo, polioleofinas , poliamidas y inaciones y co-polímeros de los mismos. 5. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque la ca ástico comprende un poliéster. 6. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque la ca ástico comprende tereftalato de polietileno. 7. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque la ca ástico y la capa interna de plástico son las mis 8. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque la ca ástico y la capa interna de plástico son diféren 9. El recipiente moldeado por soplado de c la reivindicación 1, caracterizado porque las a contienen un gas que comprende un gas selecc I que consiste de dióxido de carbono, nitrógen la capa interna, la capa externa de plástico fo spuma, en donde las celdas de espuma contienen u 12. Un proceso para la preparación de un recipient ared alveolar, caracterizado porque comprende las etapas moldeo por inyección de una preforma polimérica; moldeo de la preforma polimérica con un polímero o reactivo atrapado dentro de las paredes de la misma; enfriamiento de la preforma a una temperatura m ratura de reblandecimiento del polímero; recalentamiento de la preforma a una temperatura ratura de reblandecimiento del polímero y moldeo por soplado de la preforma para preparar u consiste esencialinente de un polímero alveolar micro- una capa de espuma externa con un gas no reactivo cont s celdas de espuma micro-celulares. 13. El proceso para la preparación del rec ivo conprende dióxido de carbono, nitrógeno, argón o un ismos. 16. El proceso para la preparación del re rmidad con la reivindicación 12, caracterizado porque ivo comprende dióxido de carbono. 17. El proceso para la preparación del rec rmidad con la reivindicación 12, caracterizado porque ivo comprende dióxido de carbono a una concentración de 18. El proceso para la preparación del re rmidad con la reivindicación 12, caracterizado porque érica es moldeada por el polímero que tiene un gas ado dentro de las paredes . del mismo en un proceso de ción de multi-etapas . 19. El proceso para la preparación del re rmidad con la reivindicación 12, caracterizado porque
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JP2003220641A (ja) | 2002-01-29 | 2003-08-05 | Yoshino Kogyosho Co Ltd | 二軸延伸ブロー成形壜体及びその一次成形品 |
US20080251487A1 (en) * | 2002-10-30 | 2008-10-16 | Semersky Frank E | Overmolded container having a foam layer |
US9694515B2 (en) * | 2002-10-30 | 2017-07-04 | Plastic Technologies, Inc. | Overmolded container having an inner foamed layer |
US20100264052A1 (en) * | 2006-03-20 | 2010-10-21 | Semersky Frank E | Foamed-wall container with foamed and unfoamed regions |
US9648969B2 (en) * | 2006-04-03 | 2017-05-16 | Lbp Manufacturing Llc | Insulating packaging |
US9522772B2 (en) | 2006-04-03 | 2016-12-20 | Lbp Manufacturing Llc | Insulating packaging |
WO2007126783A1 (en) | 2006-04-03 | 2007-11-08 | Lbp Manufacturing, Inc. | Thermally activatable insulating packaging |
US20130303351A1 (en) | 2006-04-03 | 2013-11-14 | Lbp Manufacturing, Inc. | Microwave heating of heat-expandable materials for making packaging substrates and products |
US7959844B1 (en) * | 2007-08-16 | 2011-06-14 | Maxi-Life, Inc. | Plastic injection molding process |
GB0914702D0 (en) | 2009-08-22 | 2009-09-30 | Reckitt Benckiser Nv | Method |
EP2420373A3 (de) * | 2010-08-20 | 2012-06-06 | Rundpack AG | Verfahren zur Herstellung eines opaken Formteils |
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-
2008
- 2008-06-24 US US12/144,885 patent/US20080251487A1/en not_active Abandoned
-
2009
- 2009-06-24 KR KR1020117001633A patent/KR20110033843A/ko not_active Application Discontinuation
- 2009-06-24 CN CN2009801241318A patent/CN102119107A/zh active Pending
- 2009-06-24 WO PCT/US2009/048436 patent/WO2009158397A1/en active Application Filing
- 2009-06-24 RU RU2010150987/12A patent/RU2010150987A/ru not_active Application Discontinuation
- 2009-06-24 AU AU2009262245A patent/AU2009262245A1/en not_active Abandoned
- 2009-06-24 CA CA2728359A patent/CA2728359A1/en not_active Abandoned
- 2009-06-24 MX MX2010013990A patent/MX2010013990A/es not_active Application Discontinuation
- 2009-06-24 BR BRPI0924570A patent/BRPI0924570A2/pt not_active IP Right Cessation
- 2009-06-24 JP JP2011516579A patent/JP2011525880A/ja active Pending
- 2009-06-24 EP EP09770930A patent/EP2318282A1/en not_active Withdrawn
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2011
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WO2009158397A1 (en) | 2009-12-30 |
CN102119107A (zh) | 2011-07-06 |
ZA201100509B (en) | 2011-10-26 |
RU2010150987A (ru) | 2012-07-27 |
AU2009262245A1 (en) | 2009-12-30 |
JP2011525880A (ja) | 2011-09-29 |
EP2318282A1 (en) | 2011-05-11 |
CA2728359A1 (en) | 2009-12-30 |
KR20110033843A (ko) | 2011-03-31 |
US20080251487A1 (en) | 2008-10-16 |
BRPI0924570A2 (pt) | 2016-05-24 |
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