CA1186929A - Low density nonwoven sheets - Google Patents
Low density nonwoven sheetsInfo
- Publication number
- CA1186929A CA1186929A CA000410156A CA410156A CA1186929A CA 1186929 A CA1186929 A CA 1186929A CA 000410156 A CA000410156 A CA 000410156A CA 410156 A CA410156 A CA 410156A CA 1186929 A CA1186929 A CA 1186929A
- Authority
- CA
- Canada
- Prior art keywords
- sheet
- expanded
- fibrids
- floc
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 229920001059 synthetic polymer Polymers 0.000 claims abstract description 10
- 230000001427 coherent effect Effects 0.000 claims abstract description 8
- 230000008016 vaporization Effects 0.000 claims abstract description 4
- 238000009834 vaporization Methods 0.000 claims abstract 3
- 238000002844 melting Methods 0.000 claims abstract 2
- 230000008018 melting Effects 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 15
- 229920003235 aromatic polyamide Polymers 0.000 claims description 14
- 239000004760 aramid Substances 0.000 claims description 13
- -1 poly(m-phenylene isophthalamide) Polymers 0.000 claims description 12
- 230000001788 irregular Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 229920000889 poly(m-phenylene isophthalamide) Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 claims description 2
- 238000004049 embossing Methods 0.000 abstract description 23
- 239000000463 material Substances 0.000 description 18
- 239000000835 fiber Substances 0.000 description 17
- 229920000642 polymer Polymers 0.000 description 13
- 239000008399 tap water Substances 0.000 description 11
- 235000020679 tap water Nutrition 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000002002 slurry Substances 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 6
- YCGKJPVUGMBDDS-UHFFFAOYSA-N 3-(6-azabicyclo[3.1.1]hepta-1(7),2,4-triene-6-carbonyl)benzamide Chemical compound NC(=O)C1=CC=CC(C(=O)N2C=3C=C2C=CC=3)=C1 YCGKJPVUGMBDDS-UHFFFAOYSA-N 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 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 2
- TYIOVYZMKITKRO-UHFFFAOYSA-N 2-[hexadecyl(dimethyl)azaniumyl]acetate Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)CC([O-])=O TYIOVYZMKITKRO-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical group FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 description 1
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- HRNGDAQBEIFYGL-UHFFFAOYSA-N 3,4-dihydroxy-4-tetradeca-3,6-dienoyloxybutanoic acid Chemical compound CCCCCCCC=CCC=CCC(=O)OC(O)C(O)CC(O)=O HRNGDAQBEIFYGL-UHFFFAOYSA-N 0.000 description 1
- HYYVCACCUFXMMU-UHFFFAOYSA-N 3-(7-azabicyclo[4.1.0]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound NC(=O)C1=CC=CC(C(=O)N2C3=CC=CC=C32)=C1 HYYVCACCUFXMMU-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001634830 Geometridae Species 0.000 description 1
- 241001024304 Mino Species 0.000 description 1
- 101100046790 Mus musculus Trappc2 gene Proteins 0.000 description 1
- XDXHAEQXIBQUEZ-UHFFFAOYSA-N Ropinirole hydrochloride Chemical compound Cl.CCCN(CCC)CCC1=CC=CC2=C1CC(=O)N2 XDXHAEQXIBQUEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000002803 maceration Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001007 puffing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/006—Making patterned paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
Landscapes
- Paper (AREA)
- Nonwoven Fabrics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29727181A | 1981-08-28 | 1981-08-28 | |
| US297,271 | 1981-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1186929A true CA1186929A (en) | 1985-05-14 |
Family
ID=23145591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000410156A Expired CA1186929A (en) | 1981-08-28 | 1982-08-26 | Low density nonwoven sheets |
Country Status (13)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59192795A (ja) * | 1983-04-15 | 1984-11-01 | 三菱製紙株式会社 | 成形プレス用耐熱クツシヨン材 |
| BR8402613A (pt) * | 1983-06-02 | 1985-04-30 | Du Pont | Estrutura em folha de falso tecido de baixa densidade e processo aperfeicoado para sua preparacao |
| US4472241A (en) * | 1983-06-15 | 1984-09-18 | E. I. Du Pont De Nemours And Company | Co-refining of aramid fibrids and floc |
| JPS61167070A (ja) * | 1985-01-15 | 1986-07-28 | 呉羽センイ株式会社 | 樹脂含浸基材用不織布 |
| JPH0751334B2 (ja) * | 1991-10-07 | 1995-06-05 | 孝夫 高橋 | 段ボール紙の加工機 |
| US8168039B2 (en) | 2005-05-26 | 2012-05-01 | E. I. Du Pont De Nemours And Company | Electroconductive aramid paper and tape made therefrom |
| US20060266486A1 (en) * | 2005-05-26 | 2006-11-30 | Levit Mikhail R | Electroconductive aramid paper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1957913A (en) * | 1932-11-18 | 1934-05-08 | Charles W Smith | Process for making paper |
| NL246230A (enrdf_load_stackoverflow) * | 1958-12-09 | |||
| USRE30061E (en) * | 1966-07-26 | 1979-07-31 | Johnson & Johnson | Nonwoven fibrous product and method of making the same |
| US3756908A (en) * | 1971-02-26 | 1973-09-04 | Du Pont | Synthetic paper structures of aromatic polyamides |
| JPS5052304A (enrdf_load_stackoverflow) * | 1973-09-13 | 1975-05-09 | ||
| JPS5540878A (en) * | 1978-09-19 | 1980-03-22 | Takasaki Paper Mfg | Method and apparatus for producing porous thick fibrous composite material |
-
1982
- 1982-08-24 BR BR8204930A patent/BR8204930A/pt unknown
- 1982-08-24 AR AR290428A patent/AR231006A1/es active
- 1982-08-25 JP JP57146287A patent/JPS5842000A/ja active Pending
- 1982-08-25 AU AU87706/82A patent/AU563916B2/en not_active Ceased
- 1982-08-25 IE IE2046/82A patent/IE53194B1/en not_active IP Right Cessation
- 1982-08-26 CA CA000410156A patent/CA1186929A/en not_active Expired
- 1982-08-27 AT AT82304543T patent/ATE19113T1/de not_active IP Right Cessation
- 1982-08-27 DE DE8282304543T patent/DE3270424D1/de not_active Expired
- 1982-08-27 DK DK385182A patent/DK385182A/da not_active Application Discontinuation
- 1982-08-27 GR GR69136A patent/GR77245B/el unknown
- 1982-08-27 EP EP82304543A patent/EP0073668B1/en not_active Expired
- 1982-08-27 MX MX194189A patent/MX158026A/es unknown
- 1982-08-27 ES ES515329A patent/ES515329A0/es active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EP0073668B1 (en) | 1986-04-09 |
| DE3270424D1 (en) | 1986-05-15 |
| ES8308374A1 (es) | 1983-08-16 |
| ATE19113T1 (de) | 1986-04-15 |
| AU563916B2 (en) | 1987-07-30 |
| JPS5842000A (ja) | 1983-03-11 |
| MX158026A (es) | 1988-12-29 |
| AR231006A1 (es) | 1984-08-31 |
| BR8204930A (pt) | 1983-08-02 |
| IE822046L (en) | 1983-02-28 |
| GR77245B (enrdf_load_stackoverflow) | 1984-09-11 |
| ES515329A0 (es) | 1983-08-16 |
| EP0073668A1 (en) | 1983-03-09 |
| DK385182A (da) | 1983-03-01 |
| IE53194B1 (en) | 1988-08-17 |
| AU8770682A (en) | 1983-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |