CN1038758C - Rigid polyvinyl chloride foam material and manufacturing method thereof - Google Patents
Rigid polyvinyl chloride foam material and manufacturing method thereof Download PDFInfo
- Publication number
- CN1038758C CN1038758C CN 92110481 CN92110481A CN1038758C CN 1038758 C CN1038758 C CN 1038758C CN 92110481 CN92110481 CN 92110481 CN 92110481 A CN92110481 A CN 92110481A CN 1038758 C CN1038758 C CN 1038758C
- Authority
- CN
- China
- Prior art keywords
- weight
- part weight
- vinyl acetate
- agent
- vinylchlorid
- 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.)
- Expired - Fee Related
Links
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 29
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 27
- 239000006261 foam material Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 22
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 22
- 238000005187 foaming Methods 0.000 claims abstract description 14
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 13
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 10
- 229920002681 hypalon Polymers 0.000 claims abstract description 10
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 10
- 229920001194 natural rubber Polymers 0.000 claims abstract description 10
- 239000004615 ingredient Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000004132 cross linking Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 7
- HOCVBLVNCCMUAT-UHFFFAOYSA-N acetic acid;chloroethene;ethene Chemical group C=C.ClC=C.CC(O)=O HOCVBLVNCCMUAT-UHFFFAOYSA-N 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 229920001038 ethylene copolymer Polymers 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 2
- 229920003049 isoprene rubber Polymers 0.000 abstract 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 abstract 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 abstract 1
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 239000006082 mold release agent Substances 0.000 abstract 1
- 229920013716 polyethylene resin Polymers 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 6
- 229940029284 trichlorofluoromethane Drugs 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- -1 alkyl methacrylate Chemical compound 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229940063557 methacrylate Drugs 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- FZIPCQLKPTZZIM-UHFFFAOYSA-N 2-oxidanylpropane-1,2,3-tricarboxylic acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O.OC(=O)CC(O)(C(O)=O)CC(O)=O FZIPCQLKPTZZIM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- MYPDDNAJRRJUCE-UHFFFAOYSA-N buta-1,3-diene;2-methylprop-2-enenitrile;styrene Chemical compound C=CC=C.CC(=C)C#N.C=CC1=CC=CC=C1 MYPDDNAJRRJUCE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000754 repressing effect Effects 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A rigid PVC foam material is prepared by blending 5-50 parts by weight of acrylonitrile-butadiene rubber (NBR) or acrylonitrile-styrene-butadiene rubber (ABS) or Isoprene Rubber (IR) or Natural Rubber (NR) with one hundred parts by weight of polyvinyl chloride (PVC) or vinyl chloride-vinyl acetate copolymer as a main material; 5-50 parts by weight of ethylene vinyl acetate copolymer (EVA) or ionized polyethylene resin or chlorosulfonated polyethylene (CSPE); 1-5 parts by weight of a stabilizer; 1-30 parts by weight of a chemical foaming agent; 0.2-5 parts by weight of a crosslinking agent; 1-5 parts by weight of a mold release agent; the ingredients are mixed and discharged by a roller machine at the temperature of 100-150 ℃, then are put into a die to be pressurized and heated to 120-170 ℃, and the foaming crosslinking reaction is completed in about 10-60 minutes.
Description
The invention relates to a kind of polyvinyl chloride (PVC) foam material, be meant a kind of hard PVC foam composite material of cfc that need not to use especially as auxiliary agent.
PVC since when crosslinked difficulty and high-temperature fusion viscosity still low so be not suitable for foaming, for overcoming this point, known way is to add cfc (CFC), absorb heat in a large number when utilizing the cfc volatilization, make the PVC viscosity increased, about this kind method for making case before the European patent 0039117A1 patent is arranged, it is the alkyl methacrylate (alkyl methac rylate) that adds 0.1～15 part of weight in the PVC of 100 parts of weight, its alkyl is between 1 to 10 carbon atom, and add compound such as PMMA, after mixing, insert a twin screw extruder and granulate, and will make particle and in excessive trichlorofluoromethane (trichloro fluro methane), stir 22 hours, make particle be full of trichlorofluoromethane, citric acid (citric acid) powder of a weight of remix, and insert extrusion foaming in the single screw extrusion machine.
Case before the above-mentioned patent has not met environmental requirement owing to must use trichlorofluoromethane as pneumatogen, probably is banned usefulness.Moreover it need use twin screw extruder and single screw extrusion machine respectively, and cost of equipment is higher.It needs to stir 22 hours in trichlorofluoromethane again, could supply extrusion foaming, and processing procedure is long, and uneconomical.
The present invention's main purpose is to provide a kind of hard PVC foam material, and this material need not use cfc, but compliance with environmental protection requirements person.
Another object of the present invention is to provide a kind of hard PVC foam material, and the EVA foaming machine that it can be existing is produced the hard PVC foam material, can significantly save equipment cost.
The present invention's another purpose is to provide a kind of hard PVC foam material, and its processing procedure is comparatively simple and easy fast.
For reaching above-mentioned purpose, according to a kind of hard PVC foam material provided by the present invention, its technological thought mainly is: fusion in the polyvinyl chloride (PVC) of each hundred parts of weight or vinylchlorid acetate ethylene copolymer major ingredient: the acrylonitrile-butadiene rubber (NBR) of 5-50 part weight or acrylonitrile-styrene-divinyl rubber (ABS) or synthetic polyisoprene (IR) or natural rubber rubber such as (NR) are that material is with tackify, make its crosslinkable, be compatible bad because of PVC and rubber again, connect medium so add the ethylene vinyl acetate copolymer (EVA) of 5～50 parts of weight or ionization polyvinyl resin or chlorosulfonated polyethylene materials such as (CSPE) again as the centre, add the stablizer of 1～5 part of weight in addition again; The whipping agent of 1～30 part of weight (this whipping agent is a chemical foaming agent, the pneumatogen of classes such as non-trichlorofluoromethane); 0.2 the linking agent of～5 parts of weight; The releasing agent of 1～5 part of weight; With above-mentioned batching under 100～150 ℃ of temperature with the running roller machine mix, discharging; Insert pressurized, heated to 120 in the mould～170 ℃ again, finished the foaming crosslinking reaction approximately through 10～60 minutes.
The present invention's first preferable enforcement processing procedure includes the following step:
(a) batching: vinylchlorid (VC) vinyl acetate between to for plastic (Vac) multipolymer, ethylene vinyl acetate copolymer (EVA), acrylonitrile-butadiene rubber (NBR), stablizer, whipping agent, linking agent, flame-proofing agent, hollow glass ball (Q Cell), releasing agent, weighting agent are cooperated according to following ratio:
Fusion ethylene vinyl acetate copolymer (EVA) 5-50 part part by weight is preferable with 5-30 part part by weight in the vinylchlorid acetate ethylene copolymer of each hundred parts of weight; 5～50 parts of part by weight of acrylonitrile-butadiene rubber, preferable with 5-30 part part by weight; Stablizer 1-5 part part by weight; Chemical foaming agent (pneumatogen of class such as non-trichlorofluoromethane) 1-30 part part by weight, preferable with 3-20 part part by weight; Linking agent 0.2-5 part part by weight, preferable with organo-peroxide 0.5-3 part part by weight; Flame-proofing agent 5-40 part part by weight; Hollow glass ball (Q CELL) or hollow phenol-formaldehyde resin ball (PF) 10-100 part part by weight; Releasing agent 1-5 part part by weight, preferable with the Zinic stearas releasing agent; Weighting agent can add according to actual needs.
Wherein the vinylchlorid of major ingredient (VC) content is between 50-95%, and preferable with 70-95%, vinyl acetate between to for plastic (Vac) content is between 5-50%, and is preferable with 5-30%; The vinyl acetate content of ethylene vinyl acetate copolymer (EVA) is between 5-75%, and is preferable with the 5-40% ratio.
(b) with above-mentioned batching under 100-150 ℃ of temperature with running roller machine roll-in mixing, discharging.
(c) above-mentioned compound (Compound) is inserted in the mould with 4.9 * 10
6-1.6 * 10
7Pa pressure mold closing, to 120-170 ℃, it is crosslinked that compound is foamed in mould with mold heated.
(d) after 10-60 minute (looking the thick decision of mould), take out, promptly form the high foam composite material of hard PVC of a high magnification (about 5-10 doubly).
Above-mentioned (b), (c), (d) three steps are similar to known EVA foaming step, institute's use equipment is also identical, that is, the present invention's prescription can directly be produced the hard PVC foam material on traditional E VA production unit, do not need to establish separately the money production unit fully, and need not to use raw materials such as cfc, and can produce fast in a large number, have the utility value on the industry.
The present invention's the second preferred embodiment step and first embodiment are similar, also comprise (a) identical batching, (b) mix step such as discharging (c) foamable, after step (C), be die sinking through ten minutes approximately only, take out the one step foaming body it is inserted in the big mould, or insert baking in the baking box, be heated to 120-200 ℃, the one step foaming body is heated carries out 2 foaming, after 10-60 minute, take out.This two-part foaming can be made about 10-20 foam doubly.
In addition, the present invention's major ingredient can change simple substance polyvinyl chloride (PVC) into by the vinylchlorid acetate ethylene copolymer and also can.
Ethylene vinyl acetate copolymer (EVA) can ionization polyvinyl resin or chlorinatedpolyethylene (CPE) or the replacement of chlorosulfonated polyethylene ethene systems such as (CSPE).
Acrylonitrile-butadiene rubber (BNR) can acrylonitrile-styrene-divinyl rubber (ABS) or methacrylonitrile-styrene butadiene rubbers (MBS) or synthetic polyisoprene (IR) or natural rubber (NR) replace, wherein the acrylonitrile content of NBR or ABS or MBS is preferable with 5-40%.
The buoyancy of the present invention's hard PVC foam material can doubly (improve hollow glass ball or hollow phenolic resin balls component) up to 30-40, generally can be between 5-15 times, its swimming property is splendid, and toughness is good, be difficult for wrecking, Yin Qinei has empty airtight air bag (Close Cell) among the high-density again, so light weight, shock-resistant, shock absorption is also good, no matter in insulation, sound insulation or the equal tool good characteristic in aspect such as heat insulation, but this material is the hot repressing moulding after foaming, because it belongs to mechanically resistant material, the anchorage force that tool is suitable, so be particularly suitable for making kickboard, surfboard or small-sized sampan, boats and ships also can be used for boats and ships, the sound insulation that vehicle or buildings are used, heat insulation, purposes such as insulation or decoration.
Claims (6)
1. a rigid polyvinyl chloride (PVC) foam material, it be batching is pressed with the running roller machine under 100～150 ℃ of temperature mix, discharging, insert pressurized, heated to 120 in the mould～170 ℃ again, finished the foaming crosslinking reaction, and it is characterized in that in 10～60 minutes:
This batching is fusion in polyvinyl chloride of each hundred parts of weight (PVC) or vinylchlorid vinyl acetate copolymer major ingredient;
The ethylene vinyl acetate copolymer (EVA) of 5-50 part weight or ionization polyvinyl resin or chlorosulfonated polyethylene (CSPE);
The acrylonitrile-butadiene rubber (NBR) of 5-50 part weight or acrylonitrile-styrene-divinyl rubber (ABS) or synthetic polyisoprene (IR) or natural rubber (NR);
The stablizer of 1-5 part weight;
The chemical foaming agent of 1-30 part weight;
0.2-5 the linking agent of part weight;
The releasing agent of 1-5 part weight; Wherein: in the vinylchlorid acetate ethylene copolymer
Vinylchlorid (Vc) content between 50-95% and
Vinyl acetate between to for plastic (Vac) content is between 50-5%;
Vinyl acetate content is between 5-75% in the ethylene vinyl acetate copolymer (EVA).
2. the hard PVC foam material according to claim 1 wherein adds the flame-proofing agent of 5-40 part weight.
3. according to claim 1 or 2 described hard PVC foam materials, wherein add the hollow glass ball (Q cell) or the hollow phenolic resin balls (PF) of 10-100 part weight.
4. method of making the hard PVC foam material, this method are included in the polyvinyl chloride (PVC) of each hundred parts of weight or the vinylchlorid acetate ethylene copolymer major ingredient the following component of fusion to form batching:
The ethylene vinyl acetate copolymer (EVA) of 5-50 part weight or ionization polyvinyl resin or chlorosulfonated polyethylene (CSPE);
The acrylonitrile-butadiene rubber (NBR) of 5-50 part weight or acrylonitrile-styrene-divinyl rubber (ABS) or synthetic polyisoprene (IR) or natural rubber (NR);
The stablizer of 1-5 part weight;
The chemical foaming agent of 1-30 part weight;
0.2-5 the linking agent of part weight;
The releasing agent of 1-5 part weight; Wherein: in the vinylchlorid acetate ethylene copolymer
Vinylchlorid (Vc) content between 50-95% and
Vinyl acetate between to for plastic (Vac) content is between 50-5%;
Vinyl acetate content is between 5-75% in the ethylene vinyl acetate copolymer (EVA);
To prepare burden under 100～150 ℃ of temperature press with the running roller machine mix, discharging, insert pressurized, heated to 120 in the mould～170 ℃ again, finished the foaming crosslinking reaction in 10～60 minutes.
5. according to the method for the described manufacturing hard PVC of claim 4 foam material, wherein add the flame-proofing agent of 5-40 part weight in the batching.
6. according to the method for claim 4 or 5 described manufacturing hard PVC foam materials, wherein add the hollow glass ball (Q cell) or the hollow phenolic resin balls (PF) of 10-100 part weight in the batching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110481 CN1038758C (en) | 1992-09-18 | 1992-09-18 | Rigid polyvinyl chloride foam material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110481 CN1038758C (en) | 1992-09-18 | 1992-09-18 | Rigid polyvinyl chloride foam material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1084188A CN1084188A (en) | 1994-03-23 |
| CN1038758C true CN1038758C (en) | 1998-06-17 |
Family
ID=4944826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110481 Expired - Fee Related CN1038758C (en) | 1992-09-18 | 1992-09-18 | Rigid polyvinyl chloride foam material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038758C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604255A (en) * | 2012-01-17 | 2012-07-25 | 易宝(福建)高分子材料有限公司 | Novel decorative plate and preparation method thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7868701A (en) * | 2000-08-08 | 2002-02-18 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| CN100455610C (en) * | 2002-09-03 | 2009-01-28 | 沈阳化工股份有限公司 | A kind of copolymerization paste resin and preparation method thereof |
| CN101293386B (en) * | 2007-04-27 | 2011-05-25 | 镕利兴业股份有限公司 | Manufacturing method of shock-absorbing foam |
| CN102702642B (en) * | 2012-05-29 | 2013-12-25 | 晋江市诚长鞋材有限公司 | EVA (Ethylene-Vinyl Acetate Copolymer) foaming and damping material and preparation method thereof |
| CN103265770B (en) * | 2013-05-23 | 2015-10-14 | 江苏华信新材料股份有限公司 | Be applicable to white sheet material and the preparation method of double-interface card |
| CN103265776B (en) * | 2013-06-08 | 2016-04-13 | 易宝（福建）高分子材料股份公司 | A kind of ecological wooden and preparation method thereof |
| CN103788430B (en) * | 2014-01-15 | 2016-04-20 | 杜肯(武汉)绝热材料有限公司 | A kind of low temperature resistant rubber-plastic foamed lagging material |
| DK3006491T3 (en) * | 2014-10-08 | 2017-02-27 | Armacell Entpr Gmbh & Co Kg | Flexible insulation foam with low smoke generation |
| CN106273086A (en) * | 2016-08-30 | 2017-01-04 | 闽侯宏鑫塑胶有限公司 | A kind of boats and ships make mould and Ship production post-cure setting process |
| CN108215381B (en) * | 2017-12-31 | 2020-02-18 | 湖南长丰汽车内装饰有限公司 | Automotive interior coating materials and coating technology for automotive interiors |
-
1992
- 1992-09-18 CN CN 92110481 patent/CN1038758C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604255A (en) * | 2012-01-17 | 2012-07-25 | 易宝(福建)高分子材料有限公司 | Novel decorative plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084188A (en) | 1994-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1038758C (en) | Rigid polyvinyl chloride foam material and manufacturing method thereof | |
| US20100047520A1 (en) | Plastics composite moulding with a three-layer structure | |
| CA1181209A (en) | Process for skin foam | |
| US6391233B1 (en) | Method of producing a porous product | |
| CN112029173B (en) | Polyethylene breathable film and preparation method thereof | |
| CN112895642B (en) | Micro-foaming PVC floor without plasticizer and preparation method thereof | |
| CA2352095A1 (en) | Thermally conductive composite material | |
| CN112745681B (en) | TPV material capable of being foamed by injection molding and preparation method and application thereof | |
| WO2003047853A1 (en) | Layered film and process for producing layered film | |
| CN112759857B (en) | ASA (acrylonitrile styrene acrylate) resin co-extrusion PVC (polyvinyl chloride) -based wood-plastic composite material as well as preparation method and application thereof | |
| CN108819402A (en) | A kind of multilayer light anti-impact polycarbonate base microporous foam composite board and preparation method thereof | |
| GB2048893A (en) | Method for the preparation of a foamed body of a vinyl chloride-based resin | |
| CA1125944A (en) | Process for manufacturing thermoplastic compositions and containers made of such compositions | |
| US5238622A (en) | Resinous foam formulation for self-skinning cover material | |
| CN110439219A (en) | Micro-foamed plastic floor and its production process | |
| CN115384161A (en) | Recyclable and environmentally friendly thermoplastic TPU foamed artificial leather and its preparation process | |
| CN109666215A (en) | A kind of high-intensity hollow composite material building mould board and its processing method and recovery method | |
| CN104746354A (en) | Method for processing double-sided polyvinyl chloride water-based artificial leather | |
| WO1988001934A1 (en) | A method for producing cellular pvc plastic | |
| CN109501197A (en) | A kind of good hollow composite material building template of anti-flammability and its processing method and recovery method | |
| CN106905586B (en) | Micro-foaming functional master batch composition, preparation method thereof and refrigerator foaming plate | |
| EP1054033A4 (en) | Extrusion-foamed board of resin blend comprising modified polypropylene resin and polystyrene resin | |
| CN212796137U (en) | High-toughness PVC (polyvinyl chloride) film | |
| JP3814091B2 (en) | Woodgrain-like low-foaming resin composition and woodgrain pattern-forming building material | |
| EP0672510A1 (en) | Formed article of resin and method of production thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |