JPH0796088B2 - Method for manufacturing container filter - Google Patents
Method for manufacturing container filterInfo
- Publication number
- JPH0796088B2 JPH0796088B2 JP2301633A JP30163390A JPH0796088B2 JP H0796088 B2 JPH0796088 B2 JP H0796088B2 JP 2301633 A JP2301633 A JP 2301633A JP 30163390 A JP30163390 A JP 30163390A JP H0796088 B2 JPH0796088 B2 JP H0796088B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- sheet
- shaped filter
- filter
- mold
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title description 6
- 238000000465 moulding Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 16
- 239000004745 nonwoven fabric Substances 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000002788 crimping Methods 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
- 238000003856 thermoforming Methods 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
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002657 fibrous material 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
- 230000010287 polarization Effects 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
- 238000009751 slip forming Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Nonwoven Fabrics (AREA)
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。TECHNICAL FIELD The present invention relates to a method for producing a container-shaped filter that can be used, for example, for component extraction and gas purification.
［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が
使用されているが、フィルターの小形化、自動充填によ
る省力化等のため、容器状フィルターが求められてい
る。BACKGROUND ART Conventionally, a sheet-shaped or bag-shaped filter made of paper, woven fabric, non-woven fabric, etc. has been used as a filter for coffee, tea, etc., but for the purpose of downsizing the filter, labor saving by automatic filling, etc. There is a demand for container filters.
従来でも、紙製の容器状フィルターは製造されている。
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、次のような問題点があった。Conventionally, container filters made of paper have been manufactured.
However, when paper, woven fabric, or non-woven fabric generally used as such a filter material is formed into a three-dimensional shape like a container, there are the following problems.
即ち、深絞りのような変形の度合いが大きい場合、成
形が困難である、成形に伴って繊維の配置がずれて繊
維が切れたり、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。That is, when the degree of deformation such as deep drawing is large, it is difficult to mold, the fibers are dislocated due to molding and the fibers are cut, or gaps are generated, and the physical properties and shape retention of the molded product are improved. There are difficulties, 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 such a problem, in recent years, a container-like filter using a non-woven sheet made of polyester-based long fibers instead of these materials and a method for producing the same have been proposed (for example, Japanese Patent Laid-Open No. 2000-242242). (See JP 62-144723).
［発明が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が不充
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 producing a container-shaped filter according to the above-mentioned JP-A-62-144723, polyester has insufficient chemical resistance, so that the use of the filter is limited, In addition, a secondary processing such as heat treatment of the raw sheet is required during the production, resulting in poor productivity.
本発明は、熱成形性を向上させることができる容器状フ
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 producing 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）が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）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90〜155℃
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。[Means and Actions for Solving the Problems] In the method for manufacturing a container-shaped filter according to the present invention, a polypropylene-based continuous fiber having a birefringence (Δn) of 0.005 to 0.019 is used, and the strength ratio (MD / TD) is 1 to 2 and the elongation at break is 80% or more in both the longitudinal and transverse directions, and a non-woven fabric sheet is manufactured by thermocompression bonding, and then the non-woven fabric sheet is heated to 90 to 155 ° C.
The non-woven sheet is press-formed into a container shape while being heated.
前記ポリプロピレン系長繊維の材料は、ホモポリプロピ
レンが好ましいが、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、ポリカボネート
等の異種ポリマーが小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 polypropylene long-fiber material is preferably homopolypropylene, but is not limited to this, and may be a copolymer of propylene and another olefin. In addition, a small amount of a different polymer such as polyester, polyamide, or polycarbonate 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が、メルト
インデクス（MI）については10〜100とするのが好まし
い。MIが10より小さい場合には繊維の紡出性が悪くな
り、また100より大きい場合には成形品の強度が不充分
になる虞れがある。Although the molecular weight of the polypropylene material is arbitrary, the melt index (MI) is preferably 10 to 100. If MI is less than 10, the spinnability of the fiber may be poor, and if it is more 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ができる。The thickness of the long fibers is also arbitrary and is usually 0.1 to 20 denier (d), preferably 1 to 10 d. The thickness of this long fiber can be adjusted by drawing conditions.
長繊維の複屈折率（Δｎ）は、熱成形適性、特に熱成形
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だが、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が足
りず、成形時に破れる虞れがある。The birefringence index (Δn) of long fibers affects thermoformability, especially yarn breakage (breakage) during thermoforming, and when it is less than 0.005, molding is possible, but product strength and shape retention are If it is inferior, and if it is larger than 0.019, the elongation of the fiber is insufficient and there is a risk of breaking during molding.
この複屈折率（Δｎ）は、紡糸時において速度、温度、
押出量を制御したり、熱処理（ヒートセット）すること
により調整することができる。This birefringence (Δn) is defined by the speed, temperature,
It can be adjusted by controlling the extrusion rate or by heat treatment (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が増加し、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
複屈折率が増加する。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が増加して複屈折率の
増加につながる。For example, when the spinning speed is increased to improve the orientation degree by stretching, the birefringence increases, and when the temperature or the extrusion amount per nozzle is decreased to increase the stretching stress, the birefringence increases. Although not required in the present invention,
Even when the heat treatment is performed, the crystallinity increases and the birefringence increases.
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で製造する。The non-woven sheet is produced by thermocompression bonding the long fibers by a known spun-ponding method such as embossing.
この熱圧着の際の圧着率は任意であるが、３％より下の
場合には繊維の脱落が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が低下する虞れがあ
る。The crimping rate at the time of this thermo-compression bonding is arbitrary, but if it is less than 3%, fibers may fall off, and if it is more than 20%, liquid permeability and air permeability may be reduced. There is
また、目付量も任意であるが、100g/m2以上がよい。100
g/m2より少ない場合、剛性が不充分であり、保型性に劣
る。Further, the weight per unit area is arbitrary, but 100 g / m 2 or more is preferable. 100
If it is less than g / m 2 , the rigidity is insufficient and the shape retention is poor.
シートの厚さも任意であり、通常、0.2〜1.2mmとする。The thickness of the sheet is also arbitrary and is usually 0.2 to 1.2 mm.
一般的に、不織布シートの場合、縦横方向の強度比（MD
/TD）は１より大きくなるが、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が保てなくな
り、原反シートが裂けて成形できなくなる。Generally, in the case of a non-woven sheet, the strength ratio in the longitudinal and lateral directions (MD
/ TD) is larger than 1, but if it is larger than 2, the longitudinal and lateral balance cannot be maintained against deformation during molding, and the original sheet tears, 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％以上とするが、80％より小さい場
合には成形時の変形に原反シートが追従できないため、
穴が生じる。The breaking elongation of this nonwoven sheet is 80% or more in both the machine direction (MD) and the transverse direction (TD), but if it is less than 80%, the original sheet cannot follow the deformation during molding,
There is a hole.
不織布シートを容器形状にプレス成形する際、シートの
加熱温度が90℃より低い場合には成形が不可能になり、
また155℃より高い場合には繊維が溶融して、透液性と
通気性が劣化する。When press-forming a non-woven sheet into a container shape, if the heating temperature of the sheet is lower than 90 ° C, the forming becomes impossible,
On the other hand, when the temperature is higher than 155 ° C, the fibers are melted and the liquid permeability and air permeability are deteriorated.
このプレス成形で使用する金型の形状は任意であるが、
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。The shape of the mold used in this press molding is arbitrary,
The ratio between the depth of the drawing and the minimum length of the drawing surface is maximum.
Set to 1.5.
［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。[Examples] 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、エンボス加工が施された厚
さ0.78mm、目付量200g/m2、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、この不織布シート11が巻
回されたロール12よりガイドロール13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, a polypropylene non-woven sheet 11 having an embossed thickness of 0.78 mm, a basis weight of 200 g / m 2 and a crimping rate of 5.6% is prepared, and the non-woven sheet 11 is wound. The non-woven sheet 11 was sent from the roll 12 through the guide roll 13 between the pair of upper and lower heaters 14A and 14B, and the non-woven sheet 11 was indirectly heated to a predetermined temperature there.
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。不織布シート11の縦横方向強度比と破断伸度
は、JISL1096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。Table 1 shows the sheet temperature at the time of forming the nonwoven fabric sheet 11 in each example. In addition, specific properties of the nonwoven fabric sheet 11 used in each example, that is, fiber thickness (d), birefringence,
Table 1 shows the strength ratio (MD / TD) in the longitudinal and transverse directions and the breaking elongation in the longitudinal and transverse directions. The birefringence was measured with a polarization microscope. The longitudinal-lateral strength ratio and breaking elongation of the nonwoven fabric sheet 11 were measured using an Instron tensile tester in accordance with JIS L1096.
次に、加熱された不織布シート11をプレス成形装置15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を挟んで容器形状にプレス成形した。Next, the heated non-woven sheet 11 is sent to the press molding apparatus 15, where the non-woven sheet is placed between the upper mold 16A and the lower mold 16B of the mold.
11 was sandwiched and press-formed 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-formed container-shaped filters 17 were sent to the punching device 18, where they were punched one by one at 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D1が70mm、底部1
7Cの直径D2が60mm、高さＨが50mmである。FIG. 2 shows the container-like filter 17 of this embodiment obtained in this way. To illustrate the specific dimensions of this container-shaped filter 17, the diameter D 1 of the circular mouth 17B is 70 mm, and the bottom 1
The diameter D 2 of 7C is 60 mm and the height H is 50 mm.
〔特性の評価〕 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。その結果を下記の表−
１に示す。[Evaluation of Characteristics] With respect to the container-like filter 17 according to each of the above-mentioned examples, thermoformability (drawdown property, mold reproducibility, uneven thickness accuracy) and container performance during molding were evaluated. The results are shown in the table below.
Shown in 1.
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、殆ど起こらず、成形に支障なし。Drawdown property ○: Drawdown hardly occurs and molding is not hindered.
△…ドローダウンは、中程度で成形に僅かに支障あり。Δ: Drawdown is medium 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
発生が起こるため、成形に支障が生じる。X: The drawdown is large, adhesion to the mold and the occurrence of bridges occur, which hinders molding.
型再現性 ○…底部の角部が金型形状通り、良好に型再現されてい
る。Mold reproducibility ○: Good mold reproduction with the bottom corners conforming to the mold shape.
△…底部の角部が丸みを帯び、型再現性が僅かに劣る。Δ: The corners of the bottom are 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、型再現性が
不良である。C: The bottom corners are completely separated from the shape of the mold, 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 deviation accuracy ○: The thickness deviation of the side surface hardly occurs, and the thickness deviation accuracy is good.
△…側面部の偏肉化が一部生じて偏肉精度が僅かに劣
る。Δ: The uneven thickness accuracy is slightly inferior because the uneven thickness of the side surface partly occurs.
×…部分的に極端な偏肉化が生じ、その部分が破れる。×: Extremely uneven thickness is partially generated and the portion is broken.
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○として評価した。Container performance Container performance was evaluated with respect to shape retention. This shape retention is
As shown in FIG. 3 (A), after a weight 20 of 500 g is placed on the mouth 17B of the container-shaped filter 17 of each embodiment via the plate member 19, as shown in FIG. 3 (B), 1 The case of deformation and buckling within minutes was evaluated as x, and the case of no deformation was evaluated as o.
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11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 In the same manner as in the above Examples, the container-shaped filter 17 according to each Comparative Example was manufactured, and thermoformability and container performance were evaluated. The results are also shown in Table 1. Table 1 also shows the specific properties of the non-woven fabric sheet 11 used in each comparative example and the heating temperature of the non-woven 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）が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）が1.1〜1.4、かつ縦横方向の
破断伸度がいずれも100〜150％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11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が得られることがわかる。 From Table 1, according to the method for manufacturing the container-shaped filter 17 according to Examples 1 to 3, the birefringence (Δn) is made of polypropylene long fibers having a refractive index of 0.012 to 0.016, and the strength in the longitudinal and transverse directions manufactured by thermocompression bonding. A non-woven sheet 11 having a ratio (MD / TD) of 1.1 to 1.4 and a breaking elongation in the longitudinal and lateral directions of 100 to 150% is used. While heating the non-woven sheet 11 to 145 to 150 ° C. It can be seen that since the container-shaped filter 17 was press-molded, there were no problems in draw-down property, mold reproducibility and uneven thickness accuracy during thermoforming, and the container-shaped filter 17 having 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（0.005〜0.019）より
小さいため、得られた容器状フィルター17の保型性に問
題があることがわかる。On the other hand, according to Comparative Example 1, since the birefringence of polypropylene filaments is smaller than the range (0.005 to 0.019) according to the present invention, there is a problem in the shape retention of the obtained container-shaped filter 17. I understand.
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ため、成形時の
型再現性と偏肉精度に問題が生じ、容器状フィルターが
得られなかった。Further, according to Comparative Examples 2 and 3, since the birefringence of the polypropylene long fibers is larger than the range according to the present invention, problems occur in mold reproducibility and uneven thickness accuracy during molding, and a container-shaped filter cannot be obtained. It was
比較例４によれば、縦横方向の破断伸度がいずれも80％
以下であるため、成形時の変形にシートが追従できず、
型再現性と偏肉精度に問題が生じ、容器状フィルターが
得られなかった。According to Comparative Example 4, the breaking elongations in the vertical and horizontal directions are both 80%.
Since it is below, the sheet cannot follow the deformation during molding,
There was a problem with mold reproducibility and uneven thickness accuracy, and a container filter could not be obtained.
比較例５によれば、シート加熱温度が本発明に係る範囲
（90〜155℃）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が生じて容器状フィル
ターが得られなかった。According to Comparative Example 5, since the sheet heating temperature is lower than the range (90 to 155 ° C.) according to the present invention, problems occur in the drawdown property during molding, mold reproducibility, and uneven thickness accuracy, and a container-shaped filter is obtained. I couldn't do 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ができる。EFFECTS OF THE INVENTION According to the method for manufacturing a container-shaped filter of 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である。 11…不織布シート、14A,14B…ヒータ、15…プレス成形
装置、17…容器状フィルター。FIG. 1 is a schematic view showing a method of manufacturing a container-shaped filter according to an embodiment of the present invention, FIG. 2 is a sectional view of the container-shaped filter obtained by the embodiment, and FIGS. 3 (A) and 3 (B). FIG. 4 is a cross-sectional view showing an evaluation method of shape retention. 11 ... Nonwoven sheet, 14A, 14B ... Heater, 15 ... Press molding device, 17 ... Container filter.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 土井 正人 東京都中央区銀座４丁目12番18号 出光石 油化学株式会社内 (56)参考文献 特開 昭62−144723（ＪＰ，Ａ) 実開 昭62−66714（ＪＰ，Ｕ) 実開 平２−32912（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masato Doi 4-12-18 Ginza, Chuo-ku, Tokyo Idemitsu Petrochemical Co., Ltd. (56) Reference JP 62-144723 (JP, A) Showa 62-66714 (JP, U) Actual flat 2-32912 (JP, U)
Claims (1)
ロピレン系長繊維を使用して縦横方向の強度比（MD/T
D）が１〜２であり、かつ破断伸度が縦横方向いずれも8
0％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90〜155℃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. A polypropylene-based long fiber having a birefringence (Δn) of 0.005 to 0.019 is used to measure the strength ratio (MD / T) in the longitudinal and transverse directions.
D) is 1 to 2 and the breaking elongation is 8 in both the longitudinal and lateral directions.
A method for producing a container-shaped filter, comprising producing a nonwoven fabric sheet of 0% or more by thermocompression bonding, and then press-molding the nonwoven fabric sheet into a container shape while heating the nonwoven fabric sheet at 90 to 155 ° C.
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 JPH04176311A (en) | 1992-06-24 |
| JPH0796088B2 true 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) |
Families Citing this family (14)
| 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 |
| US9527661B2 (en) * | 2009-09-29 | 2016-12-27 | Lbp Manufacturing Llc | Disposable single use beverage package |
| DK3521210T3 (en) | 2010-07-22 | 2020-04-14 | K Fee System Gmbh | BOTTLE COOKING COVER |
| DE102012105282A1 (en) | 2012-06-18 | 2013-12-19 | K-Fee System Gmbh | Portion capsule and method of making a beverage with a portion capsule |
| DE102012223291A1 (en) | 2012-12-14 | 2014-06-18 | K-Fee System Gmbh | Portion capsule and method of making a beverage with a portion capsule |
| RU2017133486A (en) | 2015-02-27 | 2019-03-27 | К-Фее Зюстем Гмбх | PORTION CAPSULE WITH ATTACHED THERMOSWELDING FILTER ELEMENT |
| JP6580714B2 (en) | 2015-06-10 | 2019-09-25 | ケイ‐フィー システム ゲーエムベーハー | Potion capsule using 3-layer nonwoven fabric |
| CN107848699A (en) | 2015-07-13 | 2018-03-27 | K-Fee系统股份有限公司 | Filter element with otch |
| MX2018002991A (en) | 2015-09-18 | 2018-05-02 | K Fee System Gmbh | Adapter for a single serve capsule. |
| JP7092124B2 (en) * | 2017-06-09 | 2022-06-28 | 東洋紡株式会社 | Long-fiber non-woven fabric and filter reinforcement using it |
| US20210008477A1 (en) * | 2018-03-23 | 2021-01-14 | Toyobo Co., Ltd. | Long-fiber nonwoven fabric and filter reinforcement material using the same |
| US12227323B2 (en) | 2018-07-27 | 2025-02-18 | Gcs German Capsule Solution Gmbh | Method for producing a portion capsule |
| US12459728B2 (en) | 2018-11-22 | 2025-11-04 | Gcs German Capsule Solution Gmbh | Seal for a single serve capsule |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6266714U (en) * | 1985-10-16 | 1987-04-25 | ||
| JPH0673607B2 (en) * | 1985-12-20 | 1994-09-21 | 旭化成工業株式会社 | Method for manufacturing container filter |
| JPH0232912U (en) * | 1988-08-26 | 1990-03-01 |
-
1990
- 1990-11-07 JP JP2301633A patent/JPH0796088B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04176311A (en) | 1992-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0796088B2 (en) | Method for manufacturing container filter | |
| EP1553224B1 (en) | Nonwoven fabric and tea bag | |
| JP2022046702A (en) | Laminate manufacturing method and laminate | |
| EP1620254B1 (en) | Three-dimensional deep molded structures with enhanced properties | |
| JP5609334B2 (en) | Spunbond nonwoven fabric and filter using the same | |
| WO2007088824A1 (en) | Nonwoven fabric for filters and process for production of the same | |
| CN116867938B (en) | Method for producing biodegradable nonwoven fabric and molded article | |
| JP7745639B2 (en) | Biodegradable nonwoven fabric and its uses | |
| WO1988010330A1 (en) | Reticulate polypropylene fibers, process for their production, and reticulate fiber nonwoven fabric | |
| WO2020116569A1 (en) | Long-fiber nonwoven fabric and filter reinforcing material using same | |
| JP6936615B2 (en) | Polyphenylene sulfide non-woven fabric | |
| JP3816828B2 (en) | Non-woven fabric for three-dimensional molding capable of high temperature thermoforming and sound absorbing material | |
| WO2007040104A1 (en) | Nonwoven fabric for filters | |
| JP3201168B2 (en) | Filter substrate and method for producing the same | |
| JP2009167570A (en) | Reinforcement base fabric for urethane foam molding | |
| JP5213558B2 (en) | Non-woven fabric for thermoforming and thermoforming method using the same | |
| WO2018225671A1 (en) | Long-fiber nonwoven fabric and filter reinforcement material using same | |
| JP7287385B2 (en) | Long fiber nonwoven fabric and filter reinforcing material using the same | |
| JP3560262B2 (en) | Container-like liquid filter and method for manufacturing the same | |
| JPH0673607B2 (en) | Method for manufacturing container filter | |
| EP4253037B1 (en) | Non-woven-fabric layered body for sound-absorbing material, and sound-absorbing material | |
| JP3219800B2 (en) | Manufacturing method of battery separator | |
| JP2586125B2 (en) | Long-fiber nonwoven fabric and its manufacturing method | |
| JPH0429776B2 (en) | ||
| KR100490515B1 (en) | High-tenacity high-modulus drainage filter and preparation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |