CA2264159A1 - Method and apparatus for microcellular polymer extrusion - Google Patents
Method and apparatus for microcellular polymer extrusion Download PDFInfo
- Publication number
- CA2264159A1 CA2264159A1 CA002264159A CA2264159A CA2264159A1 CA 2264159 A1 CA2264159 A1 CA 2264159A1 CA 002264159 A CA002264159 A CA 002264159A CA 2264159 A CA2264159 A CA 2264159A CA 2264159 A1 CA2264159 A1 CA 2264159A1
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- microcellular
- rate
- polymeric material
- pathway
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 201
- 238000001125 extrusion Methods 0.000 title claims abstract description 112
- 229920000642 polymer Polymers 0.000 title claims description 175
- 239000000463 material Substances 0.000 claims abstract description 445
- 230000006911 nucleation Effects 0.000 claims abstract description 115
- 238000010899 nucleation Methods 0.000 claims abstract description 115
- 238000000576 coating method Methods 0.000 claims abstract description 68
- 238000007493 shaping process Methods 0.000 claims abstract description 63
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- 239000012530 fluid Substances 0.000 claims description 285
- 239000004604 Blowing Agent Substances 0.000 claims description 237
- 230000037361 pathway Effects 0.000 claims description 181
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 152
- 239000000243 solution Substances 0.000 claims description 125
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 77
- 238000002347 injection Methods 0.000 claims description 69
- 239000007924 injection Substances 0.000 claims description 69
- 238000001816 cooling Methods 0.000 claims description 31
- 230000007423 decrease Effects 0.000 claims description 26
- 238000005187 foaming Methods 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- 239000006260 foam Substances 0.000 claims description 24
- 239000002243 precursor Substances 0.000 claims description 24
- 238000011144 upstream manufacturing Methods 0.000 claims description 22
- 230000010261 cell growth Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 21
- 230000010006 flight Effects 0.000 claims description 21
- 230000001965 increasing effect Effects 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 15
- 239000002667 nucleating agent Substances 0.000 claims description 15
- 230000003247 decreasing effect Effects 0.000 claims description 12
- 229920000098 polyolefin Polymers 0.000 claims description 12
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003607 modifier Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000002666 chemical blowing agent Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000011437 continuous method Methods 0.000 claims description 3
- 239000012456 homogeneous solution Substances 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 156
- 239000000155 melt Substances 0.000 description 40
- 239000007789 gas Substances 0.000 description 39
- 238000001878 scanning electron micrograph Methods 0.000 description 34
- -1 polyethylene Polymers 0.000 description 33
- 238000002156 mixing Methods 0.000 description 23
- 238000004519 manufacturing process Methods 0.000 description 22
- 239000008188 pellet Substances 0.000 description 19
- 239000004698 Polyethylene Substances 0.000 description 16
- 239000000203 mixture Substances 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 16
- 239000004743 Polypropylene Substances 0.000 description 14
- 238000005755 formation reaction Methods 0.000 description 14
- 229920001155 polypropylene Polymers 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 239000004800 polyvinyl chloride Substances 0.000 description 12
- 238000012546 transfer Methods 0.000 description 11
- 239000003063 flame retardant Substances 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 230000009467 reduction Effects 0.000 description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 9
- 238000013461 design Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 7
- 239000000454 talc Substances 0.000 description 7
- 229910052623 talc Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000004793 Polystyrene Substances 0.000 description 6
- 229920006125 amorphous polymer Polymers 0.000 description 6
- 239000002178 crystalline material Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 230000012010 growth Effects 0.000 description 6
- 238000007373 indentation Methods 0.000 description 6
- 229920002223 polystyrene Polymers 0.000 description 6
- 239000011343 solid material Substances 0.000 description 6
- 239000011800 void material Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000004014 plasticizer Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 229920012485 Plasticized Polyvinyl chloride Polymers 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000000879 optical micrograph Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229920006126 semicrystalline polymer Polymers 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000004580 weight loss Effects 0.000 description 4
- 229920002020 Microcellular plastic Polymers 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 210000003850 cellular structure Anatomy 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000725101 Clea Species 0.000 description 1
- 101100353161 Drosophila melanogaster prel gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000048 melt cooling Methods 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 239000012704 polymeric precursor Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
- B29C44/3446—Feeding the blowing agent
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3469—Cell or pore nucleation
- B29C44/3473—Cell or pore nucleation by shearing forces
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3469—Cell or pore nucleation
- B29C44/348—Cell or pore nucleation by regulating the temperature and/or the pressure, e.g. suppression of foaming until the pressure is rapidly decreased
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/468—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length in a plurality of parallel streams which unite during the 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fillers or of fibrous materials, e.g. short-fibre reinforcements
-
- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Molding Of Porous Articles (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Artificial Filaments (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2462396P | 1996-08-27 | 1996-08-27 | |
| US60/024,623 | 1996-08-27 | ||
| US2688996P | 1996-09-23 | 1996-09-23 | |
| US60/026,889 | 1996-09-23 | ||
| US77770996A | 1996-12-20 | 1996-12-20 | |
| US08/777,709 | 1996-12-20 | ||
| PCT/US1997/015088 WO1998008667A2 (en) | 1996-08-27 | 1997-08-26 | Method and apparatus for microcellular polymer extrusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2264159A1 true CA2264159A1 (en) | 1998-03-05 |
Family
ID=27362362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002264159A Abandoned CA2264159A1 (en) | 1996-08-27 | 1997-08-26 | Method and apparatus for microcellular polymer extrusion |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US6284810B1 (enExample) |
| EP (2) | EP0923443B1 (enExample) |
| JP (2) | JP4240540B2 (enExample) |
| AT (2) | ATE228421T1 (enExample) |
| AU (1) | AU755441B2 (enExample) |
| CA (1) | CA2264159A1 (enExample) |
| DE (2) | DE69733286T2 (enExample) |
| WO (1) | WO1998008667A2 (enExample) |
Families Citing this family (145)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0556344B1 (en) * | 1991-01-08 | 2003-08-13 | Chiron Corporation | New insulin-like growth factor binding protein |
| US6884377B1 (en) | 1996-08-27 | 2005-04-26 | Trexel, Inc. | Method and apparatus for microcellular polymer extrusion |
| WO1998008667A2 (en) * | 1996-08-27 | 1998-03-05 | Trexel, Inc. | Method and apparatus for microcellular polymer extrusion |
| US6884823B1 (en) | 1997-01-16 | 2005-04-26 | Trexel, Inc. | Injection molding of polymeric material |
| CA2295022A1 (en) * | 1997-06-26 | 1999-01-07 | Trexel, Inc. | Microcellular food container and method for storing food in such a container |
| US6235380B1 (en) | 1997-07-24 | 2001-05-22 | Trexel, Inc. | Lamination of microcellular articles |
| US6706223B1 (en) * | 1997-12-19 | 2004-03-16 | Trexel, Inc. | Microcelluar extrusion/blow molding process and article made thereby |
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-
1997
- 1997-08-26 WO PCT/US1997/015088 patent/WO1998008667A2/en not_active Ceased
- 1997-08-26 DE DE69733286T patent/DE69733286T2/de not_active Expired - Lifetime
- 1997-08-26 CA CA002264159A patent/CA2264159A1/en not_active Abandoned
- 1997-08-26 EP EP97939596A patent/EP0923443B1/en not_active Expired - Lifetime
- 1997-08-26 AU AU41648/97A patent/AU755441B2/en not_active Ceased
- 1997-08-26 EP EP02019727A patent/EP1275485B1/en not_active Expired - Lifetime
- 1997-08-26 JP JP51188398A patent/JP4240540B2/ja not_active Expired - Fee Related
- 1997-08-26 DE DE69717465T patent/DE69717465T2/de not_active Expired - Lifetime
- 1997-08-26 AT AT97939596T patent/ATE228421T1/de not_active IP Right Cessation
- 1997-08-26 AT AT02019727T patent/ATE295254T1/de not_active IP Right Cessation
-
1999
- 1999-02-26 US US09/258,625 patent/US6284810B1/en not_active Expired - Lifetime
-
2004
- 2004-11-16 JP JP2004331856A patent/JP4563146B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-25 US US11/114,249 patent/US20050256215A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998008667A3 (en) | 1998-05-14 |
| DE69717465D1 (de) | 2003-01-09 |
| JP2002501443A (ja) | 2002-01-15 |
| AU755441B2 (en) | 2002-12-12 |
| US6284810B1 (en) | 2001-09-04 |
| ATE228421T1 (de) | 2002-12-15 |
| EP1275485A3 (en) | 2003-02-05 |
| DE69733286D1 (de) | 2005-06-16 |
| ATE295254T1 (de) | 2005-05-15 |
| JP2005178366A (ja) | 2005-07-07 |
| AU4164897A (en) | 1998-03-19 |
| US20050256215A1 (en) | 2005-11-17 |
| EP0923443B1 (en) | 2002-11-27 |
| JP4240540B2 (ja) | 2009-03-18 |
| JP4563146B2 (ja) | 2010-10-13 |
| DE69733286T2 (de) | 2006-01-19 |
| EP1275485A2 (en) | 2003-01-15 |
| WO1998008667A2 (en) | 1998-03-05 |
| DE69717465T2 (de) | 2003-07-10 |
| EP1275485B1 (en) | 2005-05-11 |
| EP0923443A2 (en) | 1999-06-23 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| FZDE | Discontinued |