JPH04176311A - Production of vessel-shaped filter - Google Patents
Production of vessel-shaped filterInfo
- Publication number
- JPH04176311A JPH04176311A JP2301633A JP30163390A JPH04176311A JP H04176311 A JPH04176311 A JP H04176311A JP 2301633 A JP2301633 A JP 2301633A JP 30163390 A JP30163390 A JP 30163390A JP H04176311 A JPH04176311 A JP H04176311A
- Authority
- JP
- Japan
- Prior art keywords
- container
- nonwoven fabric
- shaped filter
- sheet
- fabric sheet
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 18
- 239000004743 Polypropylene Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 230000014759 maintenance of location Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000035699 permeability Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、例えば成分抽出用、気体浄化用等として使用
可能な容器状フィルターの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing a container-shaped filter that can be used, for example, for component extraction, gas purification, etc.
［背景技術］
従来、コーヒー、紅茶等のフィルターとして、紙、織布
、不織布等より成るシート状又は袋状のフィルターか使
用されているか、フィルターの小形化、自動充填による
省力化等のため、容器状フィルターか求められている。[Background Art] Conventionally, sheet-like or bag-like filters made of paper, woven fabric, non-woven fabric, etc. have been used as filters for coffee, tea, etc.; A container-shaped filter is required.
従来ても、紙製の容器状フィルターは製造されている。Conventionally, paper container-shaped filters have been manufactured.
しかし、このようなフィルター材料として一般的に使用
されている紙、織布、不織布を容器のような立体形状に
成形した場合、次のような問題点かあった。However, when paper, woven fabric, or nonwoven fabric, which is commonly used as such filter material, is formed into a three-dimensional shape such as a container, the following problems arise.
即ち、■深絞りのような変形の度合いが大きい場合、成
形か困難である、゛■成形に伴って繊維の配置かずれて
繊維か切れたり、隙間が生じたりする、■成形品の物性
や保型性に難点がある、等である。In other words, ■ If the degree of deformation is large, such as in deep drawing, it is difficult to form, ■ The alignment of the fibers may shift during molding, resulting in fiber breaks or gaps, and ■ The physical properties of the molded product may be affected. There are problems with shape retention, etc.
そこで、このような問題点を解決するため、近年、これ
らの材料の代わりに、ポリエステル系長繊維より成る不
織シートを使用した容器状フィルター及びその製造方法
が提案されている（例えば、特開昭６２−１４４７２３
号公報参照）。Therefore, in order to solve these problems, in recent years, container-shaped filters and methods for manufacturing the same have been proposed that use nonwoven sheets made of polyester long fibers instead of these materials (for example, Showa 62-144723
(see publication).
［発明か解決しようとする課題］
上述した特開昭６２−１４４７２３号公報に係る容器状
フィルターの製造方法によれば、ポリエステルは耐薬品
性か不充分であるため、フィルターの用途が限られ、ま
た製造の際に原反シートの熱処理等の二次的な加工が必
要となって生産性に劣っている。[Problems to be Solved by the Invention] According to the method for manufacturing a container-shaped filter according to the above-mentioned Japanese Patent Application Laid-Open No. 62-144723, the use of the filter is limited because polyester has insufficient chemical resistance. Further, during production, secondary processing such as heat treatment of the original sheet is required, resulting in poor productivity.
本発明は、熱成形性を向上させることかできる容器状フ
ィルターの製造方法を提供することを目的とする。An object of the present invention is to provide a method for manufacturing a container-shaped filter that can improve thermoformability.
［課題を解決するための手段及び作用］本発明に係る容
器状フィルターの製造方法は、複屈折率（Δｎ）か０．
００５〜０．０１９のポリプロピレン系長繊維を使用し
て縦横方向の強度比（ＭＤ／ＴＤ）か１〜２であり、か
つ破断伸度が縦横方向いずれも８０％以上の不織布シー
トを熱圧着て製造した後、この不織布シートを９０〜１
６５℃に加熱しながら不織布ソートを容器形状にプレス
成形することを特徴とする。[Means and effects for solving the problem] The method for manufacturing a container-shaped filter according to the present invention is characterized in that the birefringence (Δn) is 0.
Using polypropylene long fibers of 0.005 to 0.019, a nonwoven fabric sheet with a strength ratio (MD/TD) of 1 to 2 in the longitudinal and lateral directions and a breaking elongation of 80% or more in both the longitudinal and lateral directions is bonded by thermocompression. After manufacturing, this nonwoven fabric sheet is
The method is characterized in that the nonwoven fabric sort is press-molded into a container shape while being heated to 65°C.
前記ポリプロピレン系長繊維の材料は、ホモポリプロピ
レンか好ましいか、これに限られず、プロピレンと他の
オレフィンとの共重合体であってもよい。また、この材
料中には、ポリエステル、ポリアミド、ポリカポネート
等の異種ポリマーか少量添加されていてもよい。更に、
必要により、難燃剤、顔料、帯電防止剤等の添加剤を混
合しておいてもよい。The material of the polypropylene long fibers is preferably homopolypropylene, but is not limited thereto, and may be a copolymer of propylene and another olefin. Further, a small amount of a different type of polymer such as polyester, polyamide, polycarbonate, etc. may be added to this material. Furthermore,
If necessary, additives such as flame retardants, pigments, and antistatic agents may be mixed.
ポリプロピレン系材料の分子量は任意であるか、メルト
インデクス（ＭＩ）についてはｌＯ〜１００とするのか
好ましい。Ｍｌか１０より小さい場合には繊維の紡出性
か悪くなり、また１００より大きい場合には成形品の強
度か不充分になる虞れがある。The molecular weight of the polypropylene material is arbitrary, and the melt index (MI) is preferably 10 to 100. If Ml is smaller than 10, the spinnability of the fiber will be poor, and if it is larger than 100, the strength of the molded product may be insufficient.
前記長繊維の太さも任意であり、通常０．１〜２０デニ
ール（ｄ）、好ましくは１〜１０ｄとする。この長繊維
の太さは、延伸条件により調整することかできる。The thickness of the long fibers is also arbitrary, and is usually 0.1 to 20 denier (d), preferably 1 to 10 denier (d). The thickness of the long fibers can be adjusted by adjusting the stretching conditions.
長繊維の複屈折率（Δｎ）は、熱成形適性、特に熟成形
時の糸切れ（破れ）に影響を与え、前記０、００５より
小さい場合には成形は可能たか、製品の強度と保型性が
劣り、また前記０．０１９より大きい場合には繊維の伸
びか足りず、成形時に破れる虞れがある。The birefringence index (Δn) of long fibers affects thermoformability, especially thread breakage (breakage) during aging molding, and if it is smaller than 0.005, it may be difficult to mold, or the strength and shape retention of the product will be affected. In addition, if it is larger than 0.019, the fibers will not have enough elongation, and there is a risk of tearing during molding.
この複屈折率（△ｎ）は、紡糸時において速度、温度、
押出量を刺部したり、熱処理（ヒートセット）すること
により調整することかできる。This birefringence (△n) is determined by speed, temperature,
The amount of extrusion can be adjusted by cutting or heat-setting.
例えば、紡糸時において速度を増加させて延伸による配
向度を向上させると複屈折率か増加し、また温度やノズ
ル当たりの押出量を低下させて延伸応力を増加させると
複屈折率か増加する。なお、本発明では不要であるが、
熱処理を施した場合にも結晶化度か増加して複屈折率の
増加につながる。For example, increasing the speed during spinning to improve the degree of orientation due to stretching will increase the birefringence, and increasing the stretching stress by decreasing the temperature or the amount of extrusion per nozzle will increase the birefringence. Although not necessary in the present invention,
Heat treatment also increases the crystallinity, leading to an increase in birefringence.
不織布シートは、前記長繊維を公知のスパンポンド法に
よりエンボス加工等による熱圧着て製造する。The nonwoven fabric sheet is manufactured by thermocompression-bonding the long fibers by embossing or the like using a known spun-pond method.
この熱圧着の際の圧着率は任意であるか、３％より下の
場合には繊維の脱落か起きる可能性があり、また２０％
、より大きい場合には透液性と通気性か低下する虞れか
ある。The compression bonding rate during this thermocompression bonding is arbitrary, or if it is less than 3%, there is a possibility that fibers may fall off, and if it is less than 3%,
, if it is larger, there is a risk that liquid permeability and air permeability will decrease.
また、目付量も任意であるか、１００ｇ／ｒｒ？以上か
よい。１００ｇ／ｒｒ（より少ない場合、剛性か不充分
であり、保型性に劣る。Also, is the basis weight arbitrary, 100g/rr? That's all. 100g/rr (If it is less than 100g/rr, the rigidity is insufficient and the shape retention is poor.
シートの厚さも任意であり、通常、０．２〜１．２−と
する。The thickness of the sheet is also arbitrary, and is usually 0.2 to 1.2-.
一般的に、不織布シートの場合、縦横方向の強度比（Ｍ
Ｄ／ＴＤ）は１より大きくなるか、２より大きい場合に
は成形時の変形に対して縦横方向のバランスか保てなく
なり、原反シートか裂けて成形できなくなる。In general, in the case of nonwoven fabric sheets, the strength ratio in the longitudinal and lateral directions (M
D/TD) is greater than 1, or if it is greater than 2, the balance in the longitudinal and lateral directions cannot be maintained against deformation during molding, and the raw sheet will tear, making it impossible to mold.
この不織布シートの破断伸度は、縦方向（ＭＤ）と横方
向（ＴＤ）のいずれも８０％以上とするか、８０％より
小さい場合には成形時の変形に原反シートか追従できな
いため、穴か生じる。The elongation at break of this nonwoven fabric sheet should be 80% or more in both the machine direction (MD) and the transverse direction (TD), or if it is less than 80%, the original fabric sheet will not be able to follow the deformation during molding. A hole will form.
不織布シートを容器形状にプレス成形する際、シートの
加熱温度か９０℃より低い場合には成形か不可能になり
、また１６５℃より高い場合には繊維が溶融して、透液
性と通気性か劣化する。When press-molding a nonwoven fabric sheet into a container shape, if the heating temperature of the sheet is lower than 90°C, it will not be possible to form the sheet, and if it is higher than 165°C, the fibers will melt, resulting in poor liquid permeability and air permeability. or deteriorate.
このプレス成形で使用する金型の形状は任意てあるか、
絞り込み深さと絞り込み面の最小長さとの比は、最大で
１．５とする。Is the shape of the mold used for this press molding arbitrary?
The ratio of the drawing depth to the minimum length of the drawing surface is 1.5 at maximum.
［実施例］
実施例１〜３
図面を参照して各実施例に係る容器状フィルターの製造
方法を説明する。[Example] Examples 1 to 3 A method for manufacturing a container-shaped filter according to each example will be described with reference to the drawings.
第１図に示すように、先ず、エンボス加工か施された厚
さ０．７８ｍｍ、目付量２００ｇ／ｒｒｒ、圧着率５゜
６％のポリプロピレン製不織布シート１１を用意し、こ
の不織布シー）１１か巻回されたロール１２よりガイド
ロールＩ３を介して不織布シート１１を上下一対のヒー
タ１４Ａ、 １４Ｂ間に送り、ここで不織布シート１１
を間接的に所定温度に加熱した。As shown in FIG. 1, first, an embossed polypropylene nonwoven sheet 11 with a thickness of 0.78 mm, a basis weight of 200 g/rrr, and a crimping rate of 5.6% is prepared. The nonwoven fabric sheet 11 is sent from the wound roll 12 via the guide roll I3 between a pair of upper and lower heaters 14A and 14B, where the nonwoven fabric sheet 11
was indirectly heated to a predetermined temperature.
各実施例における不織布シート１１の成形時のシート温
度を表−１に示す。また、各実施例で使用した不織布シ
ート１１の具体的性状、即ち繊維の太さ（ｄ）、複屈折
率、シートの縦横方向強度比（ＭＤ／ＴＤ） 、縦横方
向の破断伸度を表−１に示す。なお、複屈折率は、偏光
顕微鏡で測定した。Table 1 shows the sheet temperature during molding of the nonwoven fabric sheet 11 in each example. In addition, the specific properties of the nonwoven fabric sheet 11 used in each example, namely the fiber thickness (d), birefringence, strength ratio in the longitudinal and lateral directions (MD/TD) of the sheet, and elongation at break in the longitudinal and lateral directions are shown in the table. Shown in 1. Note that the birefringence was measured using a polarizing microscope.
不織布シーＨ１の縦横方向強度比と破断伸度は、ＪＩＳ
Ｌ １０９６に準拠して、インストロン引張り試験機
を使用して測定した。The strength ratio in the longitudinal and lateral directions and the elongation at break of the nonwoven fabric sheet H1 are as per JIS
Measured using an Instron tensile tester according to L 1096.
次に、加熱された不織布シート１１をプレス成形装置１
５に送り、ここで金型の上型１６Ａと下型１６Ｂ間に不
織布シート１１を挟んて容器形状にプレス成形した。Next, the heated nonwoven fabric sheet 11 is molded into a press molding device 1.
5, and here the nonwoven fabric sheet 11 was sandwiched between the upper mold 16A and the lower mold 16B of the mold, and press-molded into a container shape.
次に、連続して成形された容器状フィルター１７を打抜
き装置１８に送り、ここで１個ずつフランジ部１７Ａで
打抜いた。Next, the continuously molded container-shaped filters 17 were sent to a punching device 18, where they were punched out one by one using the flange portion 17A.
第２図に、このようにして得られた本実施例の容器状フ
ィルター１７を示す。この容器状フィルター１７の具体
的寸法を例示すると、円形の口部１７Ｂの直径り、か７
０−１底部１７Ｃの直径り、か６０皿、高さＨが５０口
である。FIG. 2 shows the container-shaped filter 17 of this example obtained in this manner. To illustrate the specific dimensions of this container-shaped filter 17, the diameter of the circular mouth portion 17B is
The diameter of the 0-1 bottom 17C is 60 plates, and the height H is 50 pieces.
上記各実施例に係る容器状フィルター１７について、成
形時における熱成形性（ドローダウン性、型再現性、偏
肉精度）及び容器性能を評価した。Regarding the container-shaped filter 17 according to each of the above examples, thermoformability (drawdown property, mold reproducibility, thickness unevenness accuracy) and container performance during molding were evaluated.
その結果を下記の表−１に示す。The results are shown in Table 1 below.
各特性の評価基準は、次の通りである。The evaluation criteria for each characteristic are as follows.
ドローダウン性
○・・・ドローダウンは、殆と起こらず、成形に支障な
し。Drawdown property: Drawdown hardly occurs and there is no problem with molding.
△・・・ドローダウンは、中程度で成形に僅かに支障あ
り。△...Drawdown is moderate and slightly hinders molding.
×・・・ドローダウンが大きく、金型への付着、ブリッ
ジの発生か起こるため、成形に支障か生じる。×: Drawdown is large, adhesion to the mold and bridging occur, causing problems in molding.
型再現性
○・・・底部の角部か金型形状通り、良好に型再現され
ている。Mold reproducibility ○: The mold is well reproduced according to the shape of the mold, such as the bottom corner.
△・・・底部の角部か丸みを帯び、型再現性か僅かに劣
る。△...The bottom corner is rounded, and the mold reproducibility is slightly inferior.
×・・・底部の角部が完全に金型形状から離れ、型再現
性か不良である。×: The bottom corner is completely separated from the mold shape, and the mold reproducibility is poor.
偏肉精度
○・・・側面部の偏肉化が殆ど起こらず、偏肉精度が良
好である。Thickness unevenness accuracy ○: Thickness unevenness on the side surface hardly occurs, and the thickness unevenness accuracy is good.
△・・・側面部の偏肉化か一部生じて偏肉精度が僅かに
劣る。△: Thickness unevenness occurs partially on the side surface, and thickness unevenness accuracy is slightly inferior.
×・・・部分的に極端な偏肉化か生じ、その部分が破れ
る。×...Extreme thickness unevenness occurs in some parts, and that part is torn.
容器性能
容器性能は、保型性に関して評価した。この保型性は、
第３図（Ａ）に示すように、各実施例の容器状フィルタ
ー１７の口部１７Ｂに板材１９を介して５００ｇの重り
２０を載せた後、第３図（Ｂ）に示すように、１分以内
に変形座屈した場合を×、変形しない場合をＯとして評
価した。Container Performance Container performance was evaluated in terms of shape retention. This shape retention is
As shown in FIG. 3(A), after placing a weight 20 of 500 g on the opening 17B of the container-shaped filter 17 of each example via the plate material 19, as shown in FIG. 3(B), 1 The evaluation was rated as ``x'' if deformation buckling occurred within minutes, and ``O'' if no deformation occurred.
比較例１〜５
上記実施例と同様にして、各比較例に係る容器状フィル
ター１７を製造し、熱成形性と容器性能を評価した。そ
の結果を表−１に併せて示す。また、各比較例における
使用した不織布シートｔｔの具体的性状と成形時の不織
布シート１１の加熱温度も表−１に示す。Comparative Examples 1 to 5 Container-shaped filters 17 according to each comparative example were manufactured in the same manner as in the above examples, and thermoformability and container performance were evaluated. The results are also shown in Table-1. Table 1 also shows the specific properties of the nonwoven fabric sheet tt used in each comparative example and the heating temperature of the nonwoven fabric sheet 11 during molding.
表−１より、実施例１〜３に係る容器状フィルター１７
の製造方法によれば、複屈折率（Δｎ）か０．０１２〜
０．０１６のポリプロピレン長繊維より成り、熱圧着で
製造された縦横方向の強度比（ＭＤ／ＴＤ）か１．１〜
１．４、かつ縦横方向の破断伸度かいずれも１００〜１
５０％の不織布シート１１を使用し、この不織布シート
１１を１４５〜１５０℃に加熱しながら不織布シート１
１を容器状フィルター１７にプレス成形したので、熱成
形時においてドローダウン性、型再現性及び偏肉精度に
関して全く問題がなく、また保型性に優れた容器状フィ
ルター１７か得られることがわかる。From Table-1, container-shaped filter 17 according to Examples 1 to 3
According to the manufacturing method, the birefringence (Δn) is 0.012~
Made of polypropylene long fibers with a strength ratio of 0.016 and manufactured by thermocompression bonding, the strength ratio in the longitudinal and lateral directions (MD/TD) is 1.1 ~
1.4, and elongation at break in the vertical and horizontal directions are both 100-1
Using a 50% non-woven fabric sheet 11, the non-woven fabric sheet 1 is heated while heating this non-woven fabric sheet 11 to 145-150°C.
1 was press-molded into a container-shaped filter 17, there were no problems with drawdown performance, mold reproducibility, and uneven thickness accuracy during thermoforming, and it was found that a container-shaped filter 17 with excellent shape retention was obtained. .
これに対して、比較例１によれば、ポリプロピレン長繊
維の複屈折率が本発明に係る範囲（０，００５〜０．０
１９ ）より小さいため、得られた容器状フィルター１
７の保型性に問題かあることがわかる。On the other hand, according to Comparative Example 1, the birefringence of the polypropylene long fibers was within the range according to the present invention (0,005 to 0.0
19) Because it is smaller, the obtained container-shaped filter 1
It can be seen that there is a problem with the shape retention of 7.
また、比較例２と３によれば、ポリプロピレン長繊維の
複屈折率が本発明に係る範囲より大きいいため、成形時
の型再現性と偏肉精度に問題か生じ、容器状フィルター
が得られなかった。In addition, according to Comparative Examples 2 and 3, since the birefringence of the polypropylene long fibers was higher than the range according to the present invention, problems occurred in mold reproducibility and thickness unevenness accuracy during molding, and a container-shaped filter could not be obtained. Ta.
比較例４によれば、縦横方向の破断伸度かいずれも８０
％以下であるため、成形時の変形にシートか追従できず
、型再現性と偏肉精度に問題か生し、容器状フィルター
か得られなかった。According to Comparative Example 4, both the elongation at break in the longitudinal and lateral directions were 80.
% or less, the sheet could not follow the deformation during molding, causing problems in mold reproducibility and thickness unevenness accuracy, making it impossible to obtain a container-shaped filter.
比較例５によれば、シート加熱温度か本発明に係る範囲
（９０〜１６５℃）より低いため、成形時のドローダウ
ン性、型再現性及び偏肉精度に問題か生して容器状フィ
ルターか得られなかった。According to Comparative Example 5, since the sheet heating temperature is lower than the range according to the present invention (90 to 165°C), there may be problems with drawdown performance, mold reproducibility, and thickness unevenness accuracy during molding, and it is difficult to use a container-shaped filter. I couldn't get it.
［発明の効果］
本発明に係る容器状フィルターの製造方法によれば、熱
成形性を向上させることかできる。[Effects of the Invention] According to the method for manufacturing a container-shaped filter according to the present invention, thermoformability can be improved.
第１図は本発明の一実施例に係る容器状フィルターの製
造方法を示す概略図、第２図は実施例により得られた容
器状フィルターの断面図、第３図（Ａ）、（Ｂ）は保型
性の評価方法を示す断面図′Ｃある。
１１・・・不織布シート、１４Ａ、 １４Ｂ・・・ヒー
タ、１５・・・ブレス成形装置、１７・・・容器状フィ
ルター。
出願人 出光石油化学株式会社FIG. 1 is a schematic diagram showing a method for manufacturing a container-shaped filter according to an example of the present invention, FIG. 2 is a cross-sectional view of the container-shaped filter obtained in the example, and FIGS. 3 (A) and (B) There is a cross-sectional view 'C' showing a method for evaluating shape retention. DESCRIPTION OF SYMBOLS 11... Nonwoven fabric sheet, 14A, 14B... Heater, 15... Breath molding device, 17... Container-shaped filter. Applicant Idemitsu Petrochemical Co., Ltd.
Claims (1)
リプロピレン系長繊維を使用して縦横方向の強度比（Ｍ
Ｄ／ＴＤ）が１〜２であり、かつ破断伸度が縦横方向い
ずれも８０％以上の不織布シートを熱圧着で製造した後
、この不織布シートを９０〜１６５℃に加熱しながら不
織布シートを容器形状にプレス成形することを特徴とす
る容器状フィルターの製造方法。(1) Using polypropylene long fibers with a birefringence index (Δn) of 0.005 to 0.019, the longitudinal and lateral strength ratio (M
After producing a nonwoven fabric sheet with a D/TD) of 1 to 2 and a breaking elongation of 80% or more in both the longitudinal and lateral directions by thermocompression bonding, the nonwoven fabric sheet is heated to 90 to 165°C and placed in a container. A method for producing a container-shaped filter, characterized by press-molding it into a shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2301633A JPH0796088B2 (en) | 1990-11-07 | 1990-11-07 | Method for manufacturing container filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2301633A JPH0796088B2 (en) | 1990-11-07 | 1990-11-07 | Method for manufacturing container filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04176311A true JPH04176311A (en) | 1992-06-24 |
| JPH0796088B2 JPH0796088B2 (en) | 1995-10-18 |
Family
ID=17899296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2301633A Expired - Fee Related JPH0796088B2 (en) | 1990-11-07 | 1990-11-07 | Method for manufacturing container filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0796088B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000096417A (en) * | 1998-09-11 | 2000-04-04 | Unitika Ltd | Filament nonwoven fabric for forming, its production and container-shaped article using the nonwoven fabric |
| JP2010119998A (en) * | 2008-11-21 | 2010-06-03 | Ambic Co Ltd | Electret filtrating cloth |
| CN104411600A (en) * | 2012-06-18 | 2015-03-11 | K-Fee系统股份有限公司 | Portion capsule and method for producing a beverage by means of a portion capsule |
| CN107253577A (en) * | 2009-09-29 | 2017-10-17 | Lbp制造有限责任公司 | Disposable beverage packaging |
| WO2018225671A1 (en) * | 2017-06-09 | 2018-12-13 | 東洋紡株式会社 | Long-fiber nonwoven fabric and filter reinforcement material using same |
| WO2019181827A1 (en) * | 2018-03-23 | 2019-09-26 | 東洋紡株式会社 | Long-fiber nonwoven fabric and filter reinforcing material using same |
| US10472165B2 (en) | 2012-12-14 | 2019-11-12 | K-Fee System Gmbh | Portion capsule and method for producing a beverage by means of a portion capsule |
| US10669093B2 (en) | 2015-02-27 | 2020-06-02 | K-Fee System Gmbh | Single serve capsule comprising a filter element connected thereto by sealing |
| US10737876B2 (en) | 2015-07-13 | 2020-08-11 | K-Fee System Gmbh | Filter element having a cut-out |
| US10858177B2 (en) | 2010-07-22 | 2020-12-08 | K-Fee System Gmbh | Portion capsule having an identifier |
| US11045035B2 (en) | 2015-09-18 | 2021-06-29 | K-Fee System Gmbh | Adapter for a single serve capsule |
| US11084650B2 (en) | 2015-06-10 | 2021-08-10 | K-Fee System Gmbh | Portion capsule with a three-ply nonwoven fabric |
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| JPS62144723A (en) * | 1985-12-20 | 1987-06-27 | Asahi Chem Ind Co Ltd | Vessel-like filter and producing process thereof |
| JPH0232912U (en) * | 1988-08-26 | 1990-03-01 |
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| JPH0232912U (en) * | 1988-08-26 | 1990-03-01 |
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|---|---|---|---|---|
| JP2000096417A (en) * | 1998-09-11 | 2000-04-04 | Unitika Ltd | Filament nonwoven fabric for forming, its production and container-shaped article using the nonwoven fabric |
| JP2010119998A (en) * | 2008-11-21 | 2010-06-03 | Ambic Co Ltd | Electret filtrating cloth |
| CN107253577A (en) * | 2009-09-29 | 2017-10-17 | Lbp制造有限责任公司 | Disposable beverage packaging |
| US11465829B2 (en) | 2010-07-22 | 2022-10-11 | K-Fee System Gmbh | Portion capsule having an identifier |
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| US10472165B2 (en) | 2012-12-14 | 2019-11-12 | K-Fee System Gmbh | Portion capsule and method for producing a beverage by means of a portion capsule |
| US10669093B2 (en) | 2015-02-27 | 2020-06-02 | K-Fee System Gmbh | Single serve capsule comprising a filter element connected thereto by sealing |
| US11084650B2 (en) | 2015-06-10 | 2021-08-10 | K-Fee System Gmbh | Portion capsule with a three-ply nonwoven fabric |
| US11498750B2 (en) | 2015-07-13 | 2022-11-15 | Gcs German Capsule Solution Gmbh | Filter element having a cut-out |
| US10737876B2 (en) | 2015-07-13 | 2020-08-11 | K-Fee System Gmbh | Filter element having a cut-out |
| US11045035B2 (en) | 2015-09-18 | 2021-06-29 | K-Fee System Gmbh | Adapter for a single serve capsule |
| US11225738B2 (en) | 2017-06-09 | 2022-01-18 | Toyobo Co., Ltd. | Long-fiber nonwoven fabric and filter reinforcement material using the same |
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| Publication number | Publication date |
|---|---|
| JPH0796088B2 (en) | 1995-10-18 |
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