JPH0135934B2 - - Google Patents
Info
- Publication number
- JPH0135934B2 JPH0135934B2 JP57213923A JP21392382A JPH0135934B2 JP H0135934 B2 JPH0135934 B2 JP H0135934B2 JP 57213923 A JP57213923 A JP 57213923A JP 21392382 A JP21392382 A JP 21392382A JP H0135934 B2 JPH0135934 B2 JP H0135934B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- fiber
- hardness
- binder
- acetate
- 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
- 239000000835 fiber Substances 0.000 claims description 63
- 238000004519 manufacturing process Methods 0.000 claims description 25
- -1 lactam compound Chemical class 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 18
- 229920006221 acetate fiber Polymers 0.000 claims description 15
- 239000007767 bonding agent Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 150000003950 cyclic amides Chemical group 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 6
- XUWHAWMETYGRKB-UHFFFAOYSA-N delta-valerolactam Natural products O=C1CCCCN1 XUWHAWMETYGRKB-UHFFFAOYSA-N 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 229920002301 cellulose acetate Polymers 0.000 description 4
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 150000003951 lactams Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 235000013773 glyceryl triacetate Nutrition 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 229960002622 triacetin Drugs 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 description 2
- 230000021736 acetylation Effects 0.000 description 2
- 238000006640 acetylation reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000001069 triethyl citrate Substances 0.000 description 2
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 description 2
- 235000013769 triethyl citrate Nutrition 0.000 description 2
- AWKXKNCCQLNZDB-UHFFFAOYSA-N 2-[2-(2-propanoyloxyethoxy)ethoxy]ethyl propanoate Chemical compound CCC(=O)OCCOCCOCCOC(=O)CC AWKXKNCCQLNZDB-UHFFFAOYSA-N 0.000 description 1
- OMQHDIHZSDEIFH-UHFFFAOYSA-N 3-Acetyldihydro-2(3H)-furanone Chemical compound CC(=O)C1CCOC1=O OMQHDIHZSDEIFH-UHFFFAOYSA-N 0.000 description 1
- MPAGVACEWQNVQO-UHFFFAOYSA-N 3-acetyloxybutyl acetate Chemical compound CC(=O)OC(C)CCOC(C)=O MPAGVACEWQNVQO-UHFFFAOYSA-N 0.000 description 1
- SNXDCFLRJXFUQY-UHFFFAOYSA-N CC(O)=O.CC(O)=O.CC(O)=O.OCCOCCOCCO Chemical compound CC(O)=O.CC(O)=O.CC(O)=O.OCCOCCOCCO SNXDCFLRJXFUQY-UHFFFAOYSA-N 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 208000002260 Keloid Diseases 0.000 description 1
- 206010023330 Keloid scar Diseases 0.000 description 1
- RMKYMNRQXYPJHL-UHFFFAOYSA-N bis(2-ethoxyethyl) benzene-1,2-dicarboxylate Chemical compound CCOCCOC(=O)C1=CC=CC=C1C(=O)OCCOCC RMKYMNRQXYPJHL-UHFFFAOYSA-N 0.000 description 1
- HSUIVCLOAAJSRE-UHFFFAOYSA-N bis(2-methoxyethyl) benzene-1,2-dicarboxylate Chemical compound COCCOC(=O)C1=CC=CC=C1C(=O)OCCOC HSUIVCLOAAJSRE-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/418—Cyclic amides, e.g. lactams; Amides of oxalic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
- D06M23/18—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Description
本発明は、アセテート繊維を成形体とする方法
に関する。詳しくは従来用いられていなかつた新
規な繊維接合剤で、繊維表層を溶解した状態で密
着せしめたまゝ乾燥固定することにより繊維をラ
ンダムに結合させて、三次元網状構造であり且つ
形状保持性を有する成形体を製造する方法に関す
るものである。
従来から、アセテート繊維成形体の製造に用い
る接合剤にはセルローズアセテートを可塑化し得
る可塑剤、たとえばポリオールエステル系化合
物、アルコキシアルキルフタレート系化合物ある
いはまたクエン酸トリエチル等が公知である。
しかしながら、前記可塑剤は夫々その特性を考
慮しつゝ、利用されてはいるものの、最近の製造
機械の進歩改良による高速度化、量産化における
厳しい製造条件に対し、不適当になりつゝある。
たとえば、たばこ煙フイルターの製造の場合以前
は200ｍ／min程度の巻上げ速度であつたが、現
在ほとんどが400ｍ／min以上で巻上げが行なわ
れている。此様な製造条件の変化によつてフイル
タープラグ切断面の陥没、真円性の欠如および次
の工程移行へのスムーズな対応あるいは不織布シ
ートの製造におけるシート厚みの減少等々の問題
がクローズアツプされ、高性能装置に適合できる
良好な可塑剤の出現が待たれる現状である。
本発明は高性能の製造機械に好適な性能のよい
可塑剤を探索し、繊維接合剤として利用する事に
より高速度製造装置で順調且つ品質のよい成形物
の製造を行なわんとするものである。発明者等は
この目的の為長期にわたる検討の結果接合剤とし
て極めて効果のある可塑剤を見出すことができ
た。すなわち、本発明はアセテート繊維表層を接
合剤によつて溶解し、溶解状態のまま繊維相互を
密着させながら乾燥する方法によつて得られる、
繊維相互がランダムに結合され、自己形状保持性
を有する成形体の製造において、繊維表層へ賦与
する接合剤が環状アミド構造
The present invention relates to a method of forming acetate fibers into molded articles. Specifically, it is a new fiber bonding agent that has not been used before, and it connects the fibers randomly by drying and fixing the surface layer of the fibers in a molten state while adhering them, creating a three-dimensional network structure and shape retention. The present invention relates to a method of manufacturing a molded article having the following. Conventionally, plasticizers capable of plasticizing cellulose acetate, such as polyol ester compounds, alkoxyalkyl phthalate compounds, or triethyl citrate, have been known as binders used in the production of acetate fiber molded bodies. However, although each of the above plasticizers is used while taking into account its characteristics, they are becoming unsuitable for the harsh manufacturing conditions of high speed and mass production due to recent advances and improvements in manufacturing machinery. .
For example, in the case of manufacturing cigarette smoke filters, the winding speed used to be about 200 m/min, but now most winding speeds are 400 m/min or more. These changes in manufacturing conditions have brought to light problems such as depression of the cut surface of the filter plug, lack of roundness, smooth transition to the next process, and reduction in sheet thickness in the production of nonwoven fabric sheets. At present, we are waiting for the emergence of a good plasticizer that can be used in high-performance equipment. The present invention seeks to find a plasticizer with good performance suitable for high-performance manufacturing machinery, and uses it as a fiber binder to smoothly manufacture molded products with high quality using high-speed manufacturing equipment. . As a result of long-term studies for this purpose, the inventors were able to discover a plasticizer that is extremely effective as a bonding agent. That is, the present invention can be obtained by a method in which the surface layer of acetate fibers is dissolved with a binder, and the fibers are dried while being brought into close contact with each other in the dissolved state.
In the production of a molded product in which fibers are randomly bonded to each other and have self-shape retention, the bonding agent applied to the fiber surface layer has a cyclic amide structure.
【式】を有し、
環を構成する炭素数が５および５以上であつて、
置換基（Ｒ）を有するかもしくは有しないラクタ
ム系化合物を含有する液体である事を特徴とする
アセテート繊維成形体の製造方法である。
以下に本発明を詳しく説明する。本発明のアセ
テート繊維はセルロースジアセテートであつて、
アセチル化度38乃至40.6％もしくは結合酢酸量53
乃至56.5％の酢化度を有する酢酸繊維素繊維で実
質的に長いフイラメントか短繊維のいづれかであ
る。繊度は通常１乃至16デニール程度であり、全
繊度は通常3000〜300000デニール程度であり、捲
縮は適度に与えられている方がよく、通常25mm長
さに10乃至30個程度の捲縮が付されている。しか
し特に之等の範囲に拘わるものではない。従来ア
セテート繊維の接合剤として利用されてきた可塑
剤には前記ポリオールエステル系化合物、アルコ
キシアルキルフタレート系化合物およびクエン酸
トリエチル等がある。具体的に例えばポリオール
エステル系化合物ではグリセロール、トリアセテ
ート、トリエチレングリコールトリアセテート、
トリエチレングリコールジプロパノエートおよび
1.3−ブチレングリコールジアセテートなどがあ
る。またアルコキシアルキルフタレート系化合物
にはジメトキシエチルフタレート、ジエトキシエ
チルフタレートなどがある。
前記可塑剤を接合剤として用いて製造するアセ
テート繊維成形物は、たばこ煙の過用繊維ロツ
ド、香気成分含有の液体含浸用繊維板あるいは繊
維ロツド、その他サインペンインキ含浸用繊維ロ
ツドなど多岐に亘る用途に多量に使用されている
極めて有用なものである。
アセテート繊維へ接合剤を賦与する方法として
は、公知のウイツクによつてトウの上下両面に付
着させる方法が用いられる。またその他スプレー
ガン等による方法も可能である。要は、繊維上へ
均一に付着させることができればよい。接合剤が
保有すべき性質としては、繊維に賦与された接合
剤は、たゞちに非粘着性であることが望ましく、
粘着性をしめす接着剤の如き物質では、接合剤使
用後に通過するガイド及び装置部分へ繊維が附着
する原因となり好ましくない。もつとも重要なこ
とは繊維表層を速やかに溶解することと、早く乾
燥し繊維を融着固定せしめ得る性質である。
次に繊維成形品を製造する製造機械の進歩改良
による高速度化、量産化に追随し得る適切な可塑
剤を必要とする理由に付、繊維ロツドの製造を例
に、より詳細、具体的に説明する。
アセテート繊維トウから繊維ロツドを製造する
場合において、紙で繊維束を巻いた繊維ロツドを
短かい長さに切断するが、この際切断が一様な整
然とした切断であり、しかもその切断された端面
は、繊維の移動のために惹起される毛羽立ちおよ
び陥没が全く伴なつてこない事が望ましい。毛羽
立ちは繊維ロツド切断用カツターの切れ味の劣化
や、刃先に糊剤が附着した場合に生ずる事が多
く、陥没はセルロースアセテート繊維トウを捲上
げる際に、強い牽引力でトウを引張つて繊維ロツ
ドを巻上げる場合、巻上がつたロツドにおいてト
ウの巻縮戻りのためにロツド端面が部分的に陥没
することによつて起こる。これらのほかトウの開
繊が不充分であつた場合にも可塑剤の塗布が充分
に行なわれないので、三次元化されなかつた比較
的自由な繊維の巻縮戻りのためにロツド端面の陥
没が生じ易くなる。前記の様な毛羽立ちと陥没を
おさえるには繊維同志をむらなく多数の点で接合
し三次元化を高める事によつて、繊維の移動を抑
制すれば、これら諸問題を解決することができ
る。しかしながら高速度で巻上げられる繊維ロツ
ド内部の繊条を速やかに固定するには、それに即
した速い硬化を可能にする秀れた可塑剤を必要と
する。
繊維ロツドはまた適度の硬さを持つことを要求
される。硬化が遅い場合は保存中に真円性を低下
せしめる事がある。尚可塑剤を用いない繊維ロツ
ドは非常に柔らかいものである。
たばこ煙フイルターに使用する繊維ロツドは特
に適度の硬度を示すものが好まれる。繊維ロツド
を製造するために添加される可塑剤は、添加量が
少ないと充分な硬度が与えられず、一方多過ぎる
と余りに多くのフイラメントを溶解してその為に
実質上非多孔性の繊維ロツドを作るから、ある限
度内に調節しなければならない。従つて高速度で
巻上げられる繊維ロツドへ添加する可塑剤は、速
やかに硬度を示すのみならず、最終的に与える硬
度も大きいことが要求される。
また、繊維を接合剤によつて積重ねて不繊布シ
ートを製造する場合においても、速やかな硬化を
しめす可塑剤を用いることによつて積重による厚
味損失を防ぎ且つ、シートがより硬くなり寸法安
定を向上せしめるばかりでなく、移送、切断等の
作業性も向上する。
本発明接合剤は環状アミド構造を有し、環を構
成する炭素数が５および５以上であつて置換基を
有するかもしくは有しないラクタム系化合物を含
有する液体である。本発明のラクタム系化合物と
して主なる化合物はδ−ラクタム系化合物、ε−
ラクタム系化合物、ζ−ラクタム系化合物などで
ある。之等の化合物の内置換基を持たないもの
は、δ−バレロラクタム、ε−カプロラクタム、
ζ−ヘプトラクタムであり、置換基を有する場合
には、置換基としてメチル−、エチル−、ｎ−プ
ロピル−、ｉ−プロピル−、tert−ブチル−、シ
クロヘキシル基などがあり、、之等の置換基を有
するラクタムが利用可能である。之等のラクタム
の内δ−バレロラクタムおよびε−カプロラクタ
ムが特に有効である。
本発明におけるラクタムを含有せしめる液体と
してはセルロースアセテートの可塑剤、たとえば
ポリオールエステル類がある。ポリオールエステ
ル類にはたとえば、グリセロールトリアセテー
ト、1.3−ブチレングリコールジアセテート等が
ある。またその他に環状エステル（特願昭57−
115885号）も用い得る。環状エステルの一例とし
てアセチルブチロラクトン、ε−カプロラクトン
等がある。之等の液体は、ラクタムを混合して溶
液とすることによつて本発明目的に効果的に利用
することができる。
本発明において使用する接合剤量は、繊維重量
に対し、１〜20重量％、好ましくは３〜15重量％
である。接合剤の使用量が少ないと繊維同志の結
合点から少なくなるため、形状保持性が劣り、成
形された品質が柔難で扱い難い欠点を持つ、また
反対に接合剤添加量が多い場合は、結合点が過度
に多くなり繊維を溶解して網目構造の破壊を生
じ、所謂ケロイド状の閉塞状態を生じる。
次に実施例により本発明の繊維成形体の製造態
様をしめす。本発明は前記の如く繊維成形体製造
の高速度化対応策として接合剤の検討を実施した
のであつて、接合剤の追否の判定は、いかに早く
成形体の硬度が表われるかを基準としている、し
たがつてはじめに成形体の硬度測定方法について
記す。
成形体硬度測定方法
(1) 繊維ロツド状成形体の場合
繊維ロツドの硬さを示す尺度として、水平に
置いた繊維ロツド上に直径12mmφの円板を介し
て300グラムの荷重を10秒間静置する際に生ず
る繊維ロツドの変形量を0.1mm単位で読みとつ
た数値をもつて、繊維ロツドの見掛けの硬度と
している。また製造直後のロツドが示す硬度か
ら時系列的変化を追跡することによつて最終的
に到達し得る硬度も知る事ができるこのため、
24時間後の硬度を測定し可塑剤の優劣の判断材
料とした。この様にロツド状成形体において示
される硬度値は小なるほど硬度が大きく、大な
る程硬化は少ない。
(2) 繊維シート状成形体の場合
繊維シートの硬さを示す尺度として、試験片
を水平の台上に置き、試験片上にそれを同寸法
の厚紙（重量約0.1ｇ／cm2）を置き、シートの
厚みH0を測定する。次に１cm2当り５ｇの荷重
を厚紙上にのせた後、１分後のシートの厚み
H1を求め次式によつて硬度（％）を算出し、
繊維シートの見掛けの硬度としている。この様
にして測定したシートの硬度値（％）は大なる
程硬度が大きく小なる程硬度は少ない。
硬度（％）＝H1／H0×100
H0：無負荷時のシート厚み
H1：負荷１分後のシート厚み
実施例を表−１および表−２に示す。
表−１に示した実施例は、繊維ロツドを公知の
方法、たとえば特公昭38−15945記載の如き方法
で製造したもので、使用したアセテート繊維は、
フイラメント繊度４デニール、全繊度43000デニ
ール、捲縮数約26個（25mm当り）である。該繊維
トウを拡巾開繊し、接合剤添加装置により表記載
の接合剤を所定重量添加し、ついで集束して紙巻
装置に送りロツド長90mmの繊維ロツドを成形し、
該繊維ロツド成形体を20℃、65％の相対湿度下で
巻上げ直後と24時間放置後の硬度を測定した。測
定の結果、製造直後の硬度は実施例１から実施例
７の結果が比較例１から比較例４の結果より優れ
ていることを明らかに示していて、各実施例いづ
れも作業性をしめす硬度10以下の値を与える。但
し比較例には接合剤として最も多用されていると
考えられるグリセロールトリアセテートについて
行なつた。
表−２に示した実施例はアセテート繊維をシー
ト状に成形する場合の例である。本発明例におけ
る繊維シートの成形材料は防止された繊維を捲縮
加工したのち、一定長に切断せしめた短繊維を用
いる。本発明の実施例８、実施例９および比較例
５に用いたシートの製造方法はフイラメント繊維
８デニール、捲縮数20（25mm当り）、カツト長51mm
のアセテート繊維をローラーカードで均一に開繊
し、ドツフアーから巻き取りドラムに至る途中
で、スプレーガンにより繊維100重量に対し、表
−２記載の接合剤を所定重量添加し、巻取りドラ
ムに巻取つて約50mm厚みに積層された時に取外し
て、厚みが20mm（見掛けの蒿密度が約0.030ｇ／
cm3）になるように押さえて、温度110℃の加熱乾
燥機に入れ、30分間加熱し繊維シートを作成し
た。かくして得られた硬化マツトを20℃65％の相
対湿度下で10分放置後シートの硬さを測定した。
測定の結果、本発明になるラクタム化合物を含有
する接合剤によつて製造されたシートの硬度は、
現在アセテート繊維に多用されているグリセロー
ルトリアセテートによつて製造されたシートの硬
度より大きい硬度を与える。It has [Formula], and the number of carbon atoms constituting the ring is 5 or 5 or more,
This is a method for producing an acetate fiber molded article, characterized in that the liquid contains a lactam compound with or without a substituent (R). The present invention will be explained in detail below. The acetate fiber of the present invention is cellulose diacetate, and
Acetylation degree 38 to 40.6% or bound acetic acid amount 53
Cellulose acetate fibers having a degree of acetylation of 56.5% to 56.5%, substantially either long filaments or short fibers. The fineness is usually about 1 to 16 deniers, and the total fineness is usually about 3,000 to 300,000 deniers, and it is better to have a moderate amount of crimp, usually about 10 to 30 crimp in a 25 mm length. It is attached. However, the scope is not particularly limited. Plasticizers conventionally used as binders for acetate fibers include the aforementioned polyol ester compounds, alkoxyalkyl phthalate compounds, and triethyl citrate. Specifically, for example, polyol ester compounds include glycerol, triacetate, triethylene glycol triacetate,
Triethylene glycol dipropanoate and
Examples include 1.3-butylene glycol diacetate. Furthermore, alkoxyalkyl phthalate compounds include dimethoxyethyl phthalate and diethoxyethyl phthalate. Acetate fiber molded products produced using the above plasticizer as a binder can be used in a wide variety of applications, including fiber rods for use in tobacco smoke, fiberboards or fiber rods for impregnating liquids containing aroma components, and fiber rods for impregnating other felt-tip pen inks. It is extremely useful and is used in large quantities. As a method of applying the binder to the acetate fibers, a method of applying the binder to both the upper and lower surfaces of the tow using a known wick is used. Other methods such as a spray gun are also possible. What is important is that it can be applied uniformly onto the fibers. As for the properties that the binder should have, it is desirable that the binder imparted to the fibers be immediately non-adhesive;
A substance exhibiting tackiness, such as an adhesive, is undesirable because it causes fibers to adhere to the guide and device parts through which the adhesive passes after use. The most important things are the ability to quickly dissolve the surface layer of fibers and the ability to quickly dry and fuse and fix fibers. Next, we will explain in more detail and specifically why we need an appropriate plasticizer that can keep up with the high speed and mass production of fiber molded products due to advancements and improvements in manufacturing machinery, using the production of fiber rod as an example. explain. When manufacturing fiber rods from acetate fiber tows, the fiber rods are wrapped in paper and cut into short lengths, and the cuts are uniform and orderly, and the cut end surfaces are smooth. It is desirable that the fibers are completely free from fluffing and depression caused by movement of the fibers. Fuzzing often occurs when the sharpness of the cutter for cutting fiber rods deteriorates or glue adheres to the cutting edge, and sagging occurs when the tow is pulled with strong traction force when winding up the cellulose acetate fiber tow to wind the fiber rod. When the rod is raised, the rod end surface partially collapses due to the uncurling of the tow in the rod that has been hoisted up. In addition to these, when the tow is insufficiently opened, the plasticizer is not applied sufficiently, which causes the rod end face to collapse due to uncurling of the relatively free fibers that have not been made three-dimensional. becomes more likely to occur. In order to suppress the above-mentioned fluffing and depression, these problems can be solved by joining the fibers evenly at many points to increase three-dimensionality and suppress the movement of the fibers. However, in order to rapidly fix the fibers inside a fiber rod that is wound at high speeds, a superior plasticizer is required which allows for correspondingly rapid curing. The fiber rod is also required to have a suitable degree of hardness. If curing is slow, roundness may decrease during storage. Fiber rods without plasticizers are very soft. Fiber rods used in tobacco smoke filters are particularly preferred to have moderate hardness. Plasticizers added to produce fiber rods may not be added in sufficient amounts to provide sufficient hardness, while too many may dissolve too many filaments and thus produce a virtually non-porous fiber rod. , so it must be adjusted within a certain limit. Therefore, the plasticizer added to the fiber rod that is wound up at high speed is required not only to exhibit hardness quickly, but also to have a high final hardness. In addition, when manufacturing a nonwoven sheet by stacking fibers with a binder, using a plasticizer that hardens quickly prevents loss of thickness due to stacking, and makes the sheet harder and dimensional. This not only improves stability, but also improves workability in transporting, cutting, etc. The bonding agent of the present invention is a liquid containing a lactam compound having a cyclic amide structure, having 5 or more carbon atoms in the ring, and having or not having a substituent. The main lactam compounds of the present invention are δ-lactam compounds and ε-lactam compounds.
These include lactam compounds, ζ-lactam compounds, and the like. Compounds without substituents such as these include δ-valerolactam, ε-caprolactam,
When it is ζ-heptolactam and has a substituent, the substituent includes methyl-, ethyl-, n-propyl-, i-propyl-, tert-butyl-, cyclohexyl group, etc. Lactams with . Of these lactams, δ-valerolactam and ε-caprolactam are particularly effective. The lactam-containing liquid in the present invention includes cellulose acetate plasticizers, such as polyol esters. Examples of polyol esters include glycerol triacetate and 1,3-butylene glycol diacetate. In addition, cyclic esters (patent application 1987-
115885) may also be used. Examples of cyclic esters include acetyl butyrolactone and ε-caprolactone. These liquids can be effectively used for the purpose of the present invention by mixing a lactam to form a solution. The amount of binder used in the present invention is 1 to 20% by weight, preferably 3 to 15% by weight, based on the weight of the fibers.
It is. If the amount of binder used is small, the bonding points between the fibers will be reduced, resulting in poor shape retention and the quality of the molded product will be soft and difficult to handle.On the other hand, if the amount of binder added is large, The number of bonding points becomes excessively large, dissolving the fibers and causing destruction of the network structure, resulting in a so-called keloid-like occlusion state. Next, the production mode of the fiber molded article of the present invention will be illustrated by Examples. As mentioned above, the present invention has investigated the use of a bonding agent as a measure to speed up the production of fiber molded bodies, and the determination of whether or not to use a binder is based on how quickly the hardness of the molded body appears. Therefore, we will first describe the method for measuring the hardness of molded bodies. Method for measuring the hardness of a molded object (1) In the case of a fiber rod-shaped molded object As a measure of the hardness of the fiber rod, a load of 300 grams is placed on the horizontally placed fiber rod via a disk with a diameter of 12 mm for 10 seconds. The apparent hardness of the fiber rod is determined by reading the amount of deformation of the fiber rod in 0.1 mm units. In addition, by tracking the changes in hardness over time from the hardness of the rod immediately after manufacture, we can determine the final hardness that the rod will reach.
The hardness was measured after 24 hours and used as a basis for determining the superiority of the plasticizer. As described above, the smaller the hardness value shown in the rod-shaped molded article, the greater the hardness, and the larger the hardness value, the less hardening. (2) In the case of fibrous sheet-like molded products As a measure of the hardness of the fibrous sheet, place a test piece on a horizontal table, and place a piece of cardboard of the same size (weight approximately 0.1 g/cm 2 ) on top of the test piece. , measure the thickness H 0 of the sheet. Next, after placing a load of 5 g per 1 cm2 on the cardboard, the thickness of the sheet after 1 minute
Find H 1 and calculate the hardness (%) using the following formula,
This is the apparent hardness of the fiber sheet. The hardness value (%) of the sheet measured in this way is such that the larger the hardness, the lower the hardness. Hardness (%) = H 1 /H 0 ×100 H 0 : Sheet thickness at no load H 1 : Sheet thickness 1 minute after loading Examples are shown in Table-1 and Table-2. In the examples shown in Table 1, fiber rods were manufactured by a known method, for example, the method described in Japanese Patent Publication No. 38-15945, and the acetate fibers used were
The filament fineness is 4 denier, the total fineness is 43000 denier, and the number of crimps is approximately 26 (per 25 mm). The fiber tow is widened, a predetermined weight of the binder listed in the table is added using a binder adding device, and then the fiber tow is bundled and sent to a paper wrapping device to form a fiber rod with a rod length of 90 mm.
The hardness of the fiber rod molded article was measured at 20° C. and 65% relative humidity immediately after being rolled up and after being left for 24 hours. The measurement results clearly show that the hardness of Examples 1 to 7 is superior to that of Comparative Examples 1 to 4 in terms of hardness immediately after production, and each example has a hardness that indicates workability. Give a value of 10 or less. However, in the comparative example, glycerol triacetate, which is considered to be the most commonly used bonding agent, was used. The examples shown in Table 2 are examples in which acetate fibers are molded into sheet shapes. The molding material for the fiber sheet in the example of the present invention uses short fibers that are crimped and then cut into a certain length. The manufacturing method of the sheets used in Example 8, Example 9 and Comparative Example 5 of the present invention was as follows: filament fiber 8 denier, number of crimps 20 (per 25 mm), cut length 51 mm.
The acetate fibers were uniformly opened with a roller card, and on the way from the dot to the winding drum, a specified weight of the binder listed in Table 2 was added to 100 weight fibers using a spray gun, and the fibers were wound on the winding drum. When it is removed and laminated to a thickness of approximately 50mm, it is removed to a thickness of 20mm (apparent density of approximately 0.030g/
cm 3 ), placed in a heating dryer at a temperature of 110°C, and heated for 30 minutes to create a fiber sheet. The hardened mat thus obtained was left for 10 minutes at 20° C. and 65% relative humidity, and then the hardness of the sheet was measured.
As a result of the measurement, the hardness of the sheet manufactured using the bonding agent containing the lactam compound of the present invention is as follows:
It provides a hardness greater than that of sheets made with glycerol triacetate, which is currently commonly used in acetate fibers.
【表】【table】
Claims (1)
し、溶解状態のまま繊維相互を密着させながら乾
燥する方法によつて得られる繊維相互がランダム
に結合され自己形状保持性を有する成形体の製造
において繊維表層へ賦与する接合剤が環状アミド
構造を有し、環を構成する炭素数が５および５以
上であつて、置換基を有するか、もしくは有しな
いラクタム系化合物１〜20重量％を含有する液体
である事を特徴とするアセテート繊維成形体の製
造方法。1 In the production of a molded article having self-shape retention properties in which the fibers are randomly bonded together, the fibers obtained by dissolving the surface layer of acetate fibers with a binder and drying the fibers while adhering them to each other in the dissolved state. A liquid in which the bonding agent applied to the surface layer has a cyclic amide structure, has 5 or more carbon atoms in the ring, and contains 1 to 20% by weight of a lactam compound with or without a substituent. A method for producing an acetate fiber molded article.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57213923A JPS59106553A (en) | 1982-12-08 | 1982-12-08 | Production of acetate fiber molded body |
| GB08332762A GB2134554B (en) | 1982-12-08 | 1983-12-08 | Method for manufacture of shaped article of acetate fibers |
| AU22208/83A AU551864B2 (en) | 1982-12-08 | 1983-12-08 | Method of manufacturing shaped article of acetate fibres |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57213923A JPS59106553A (en) | 1982-12-08 | 1982-12-08 | Production of acetate fiber molded body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59106553A JPS59106553A (en) | 1984-06-20 |
| JPH0135934B2 true JPH0135934B2 (en) | 1989-07-27 |
Family
ID=16647278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57213923A Granted JPS59106553A (en) | 1982-12-08 | 1982-12-08 | Production of acetate fiber molded body |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS59106553A (en) |
| AU (1) | AU551864B2 (en) |
| GB (1) | GB2134554B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63183289U (en) * | 1987-05-19 | 1988-11-25 | ||
| WO2003020060A1 (en) * | 2001-08-30 | 2003-03-13 | Japan Tobacco Inc. | Cigarette filter |
-
1982
- 1982-12-08 JP JP57213923A patent/JPS59106553A/en active Granted
-
1983
- 1983-12-08 GB GB08332762A patent/GB2134554B/en not_active Expired
- 1983-12-08 AU AU22208/83A patent/AU551864B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| GB2134554A (en) | 1984-08-15 |
| JPS59106553A (en) | 1984-06-20 |
| GB8332762D0 (en) | 1984-01-18 |
| GB2134554B (en) | 1986-01-02 |
| AU2220883A (en) | 1984-06-14 |
| AU551864B2 (en) | 1986-05-15 |
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