CN105793008B - 硬质热塑性泡沫致密化方法和并有所述致密化硬质热塑性泡沫的复合结构 - Google Patents

硬质热塑性泡沫致密化方法和并有所述致密化硬质热塑性泡沫的复合结构 Download PDF

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Publication number
CN105793008B
CN105793008B CN201480066453.2A CN201480066453A CN105793008B CN 105793008 B CN105793008 B CN 105793008B CN 201480066453 A CN201480066453 A CN 201480066453A CN 105793008 B CN105793008 B CN 105793008B
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China
Prior art keywords
foam
densified
thickness
core
foam body
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CN201480066453.2A
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English (en)
Chinese (zh)
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CN105793008A (zh
Inventor
F·多塔维亚诺
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Dow Chemical Co
DDP Specialty Electronic Materials US LLC
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Dow Global Technologies LLC
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/56After-treatment of articles, e.g. for altering the shape
    • B29C44/5627After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B29C44/5636After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/066Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of foam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/14Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/243Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 one at least of the material being insulating
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/246Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 combinations of materials fully covered by E04C2/16 and E04C2/20
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B29K2025/04Polymers of styrene
    • B29K2025/06PS, i.e. polystyrene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/10Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00Composition of foam
    • B32B2266/02Organic
    • B32B2266/0214Materials belonging to B32B27/00
    • B32B2266/0221Vinyl resin
    • B32B2266/0228Aromatic vinyl resin, e.g. styrenic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/304Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2509/00Household appliances
    • B32B2509/10Refrigerators or refrigerating equipment

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
CN201480066453.2A 2013-12-19 2014-12-12 硬质热塑性泡沫致密化方法和并有所述致密化硬质热塑性泡沫的复合结构 Active CN105793008B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361918500P 2013-12-19 2013-12-19
US61/918500 2013-12-19
PCT/US2014/070016 WO2015094967A1 (en) 2013-12-19 2014-12-12 Rigid thermoplastic foam densification process and composite structures incorporating the densified rigid thermoplastic foam

Publications (2)

Publication Number Publication Date
CN105793008A CN105793008A (zh) 2016-07-20
CN105793008B true CN105793008B (zh) 2018-10-19

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CN201480066453.2A Active CN105793008B (zh) 2013-12-19 2014-12-12 硬质热塑性泡沫致密化方法和并有所述致密化硬质热塑性泡沫的复合结构

Country Status (6)

Country Link
US (1) US10201951B2 (enExample)
EP (1) EP3083181A1 (enExample)
JP (1) JP6420344B2 (enExample)
CN (1) CN105793008B (enExample)
CA (1) CA2933690A1 (enExample)
WO (1) WO2015094967A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3112119A1 (de) * 2015-07-02 2017-01-04 Basf Se Verfahren zur herstellung strukturierter thermoplastischer schaumstoffplatten und thermoplastische schaumstoffplatte
US10112371B2 (en) * 2016-07-26 2018-10-30 Mp Global Products, L.L.C. Floor underlayment
US10525643B2 (en) * 2017-05-03 2020-01-07 Covestro Llc Methods for making foam laminates having a concave surface and laminates produced thereby
US20190010696A1 (en) * 2017-07-10 2019-01-10 Building Products of Canada Corp./La Cie Materiaux de Construction BP Canada Insulated Panel
CN115923218A (zh) * 2018-05-31 2023-04-07 耐克创新有限合伙公司 用于鞋类物品的缓冲构件及相关方法
CN111923312A (zh) * 2020-07-22 2020-11-13 湖北飞德慕体育用品有限公司 一种高强度高韧性瑜伽垫及其制造方法
CA3189288A1 (en) * 2020-08-12 2022-02-17 Selskabet Af 6. April 2010 Aps Suspension of electromagnetic receiver coil
DE102023200010A1 (de) * 2023-01-03 2024-07-04 Volkswagen Aktiengesellschaft Vorrichtung und Verfahren zur Herstellung von dreidimensional geformten Schaumbauteilen und Kraftfahrzeug
CN116674206A (zh) * 2023-03-01 2023-09-01 合肥联宝信息技术有限公司 一种新型epe材料及其制备方法

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863908A (en) * 1965-04-15 1975-02-04 Saint Gobain Cellular, resinous products and methods and apparatus for making them
GB1240733A (en) * 1968-06-29 1971-07-28 Dunlop Holdings Ltd Method of making flexible sheet material
JPS50141671A (enExample) * 1974-05-01 1975-11-14
US4268459A (en) 1976-06-29 1981-05-19 American Cyanamid Company Cyclic diphosphonates
US4086205A (en) 1976-09-03 1978-04-25 Monsanto Company Hydrogen phosphonates
US4070336A (en) 1976-09-03 1978-01-24 Monsanto Company Hydrogen phosphonates and polymer compositions containing them as flame retardants
JPS562134A (en) 1979-06-19 1981-01-10 Toshiba Corp Molding method for roll of bellows
JPS562138A (en) * 1979-06-19 1981-01-10 Uchiyama Mfg Corp Foaming styrol board having melted bark layer
US4278588A (en) 1979-09-24 1981-07-14 American Cyanamid Company Phosphine oxide flame retarded, rubber-modified, polyphenylene ether resin compositions
US4255324A (en) 1979-10-18 1981-03-10 American Cyanamid Company Synergistic flame retardant compositions for polyphenylene ether resins
JPS62271729A (ja) * 1986-05-21 1987-11-26 Mitsubishi Yuka Badische Co Ltd 発泡樹脂成形品の製造方法
JPS63209925A (ja) * 1987-02-27 1988-08-31 Meiwa Sangyo Kk 車輌用積層内装板の製造方法
JP3289079B2 (ja) * 1993-01-06 2002-06-04 鐘淵化学工業株式会社 改善された表面外観を有する発泡成形体の製造方法
JP2000117866A (ja) * 1998-10-15 2000-04-25 Jsp Corp ポリスチレン系樹脂多層発泡体
US6716379B2 (en) * 2000-02-03 2004-04-06 Pactiv Corporation Polymer foam plank with densified skin, method and apparatus for producing a densified skin on a foam plank
US7128561B2 (en) 2003-06-30 2006-10-31 Owens Corning Fiberglas Technology, Inc. Surface treatment for blanket of thermoplastic fibers
MX2008001408A (es) 2005-08-08 2008-03-27 Albemarle Corp Espumas polimericas estirenicas retardantes de la flama y precursores de espuma.
EP2054445B1 (en) 2006-08-16 2014-06-18 Dow Global Technologies LLC Process for brominating butadiene/vinyl aromatic copolymers
RU2010114598A (ru) 2007-09-13 2011-10-20 Дау Глобал Текнолоджиз, Инк. (Us) Вспененные стирольные полимеры, содержащие ароматические фосфонатные ап-добавки
WO2009035881A2 (en) 2007-09-13 2009-03-19 Dow Global Technologies, Inc. Phosphorus-sulfur fr additives and polymer systems containing same
US7820093B2 (en) * 2008-01-10 2010-10-26 Kin Sun Wong Method for processing stamp material
ES2436083T3 (es) 2008-02-26 2013-12-26 Dow Global Technologies Llc Polímeros bromados como aditivos retardantes de la llama y sistemas de polímeros que contienen los mismos
US20090246501A1 (en) * 2008-03-26 2009-10-01 Fina Technology, Inc. Reduced Weight Multilayer Polymeric Articles and Methods of Making and Using Same
US20110229693A1 (en) * 2008-12-17 2011-09-22 Myron Maurer Continuous process for manufacturing a shaped foam article
US8877106B2 (en) * 2009-04-28 2014-11-04 Asahi Kasei Construction Materials Corporation Device for forming thermosetting resin foam plate and method of manufacturing thermosetting resin foam plate
US8691896B2 (en) 2010-02-05 2014-04-08 Basf Se Halogen-free, phosphorus-containing flame-retardant polymer foams
JP5894188B2 (ja) 2010-12-17 2016-03-23 ダウ グローバル テクノロジーズ エルエルシー ポリスチレン溶融押出し法
EP3424667B1 (en) * 2012-03-02 2025-10-29 Orac Holding NV Process for manufacturing a plastic composite profile

Also Published As

Publication number Publication date
CA2933690A1 (en) 2015-06-25
WO2015094967A1 (en) 2015-06-25
US10201951B2 (en) 2019-02-12
EP3083181A1 (en) 2016-10-26
JP6420344B2 (ja) 2018-11-07
JP2017504679A (ja) 2017-02-09
CN105793008A (zh) 2016-07-20
US20160311196A1 (en) 2016-10-27

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