JPH09170200A - Sheet having continuous gradient function in flow direction and its production - Google Patents
Sheet having continuous gradient function in flow direction and its productionInfo
- Publication number
- JPH09170200A JPH09170200A JP35459395A JP35459395A JPH09170200A JP H09170200 A JPH09170200 A JP H09170200A JP 35459395 A JP35459395 A JP 35459395A JP 35459395 A JP35459395 A JP 35459395A JP H09170200 A JPH09170200 A JP H09170200A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- paper
- flow direction
- supplied
- materials
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 5
- 239000000123 paper Substances 0.000 abstract description 37
- 241000721671 Ludwigia Species 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 210000000038 chest Anatomy 0.000 abstract description 10
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 239000002655 kraft paper Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 23
- 240000007594 Oryza sativa Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000002964 rayon Substances 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241000272814 Anser sp. Species 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- -1 or heat resistance Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】製造工程におけるシートの流れ方
向に連続的に組成が変化する傾斜機能シート、このシー
トの製造方法およびこのシートの製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a functionally graded sheet whose composition continuously changes in the sheet flow direction in a manufacturing process, a method for manufacturing the sheet, and a device for manufacturing the sheet.
【０００２】[0002]
【従来の技術】従来、単一のシート状物において輻方向
に原料組成が変化しているシートとしては、特開昭６２
−３３５１４に開示されているように抄紙機のヘッドボ
ックスにおいて幅方向に隔壁を設けることによって製造
した密度勾配シートがあった。2. Description of the Related Art Conventionally, as a sheet in which a raw material composition is changed in a radial direction in a single sheet-like material, Japanese Patent Application Laid-Open No. 62-62160
There was a density gradient sheet manufactured by providing partition walls in the width direction in the head box of a paper machine as disclosed in US Pat.
【０００３】[0003]
【発明が解決しようとする課題】しかし、この方法によ
り製造したシートは、原料組成の変化が隔壁を設けた箇
所で起きているため、段階的な組成変化となっており、
連続的な組成変化ではない。また、密度勾配の長さも抄
紙機の抄紙幅の範囲内の変化であり最大で１０ｍ程度の
ものしか製造できない。However, the sheet produced by this method has a gradual compositional change because the composition of the raw material changes at the location where the partition wall is provided.
It is not a continuous composition change. Further, the length of the density gradient also varies within the range of the papermaking width of the papermaking machine, and only a maximum of about 10 m can be produced.
【０００４】本発明は、抄紙機のヘッドボックスに供給
する紙料の配合割合を比例的に連続して変化させること
で、抄紙工程における紙の流れ方向に原料組成が連続的
に変化する傾斜機能シートを製造するものである。ま
た、シートの長さも巻き取りの長さの範囲で組成変化が
可能であるため２、３ｍのものから数千ｍのものまで製
造可能である。The present invention is a gradient function in which the raw material composition continuously changes in the paper flow direction in the papermaking process by continuously and proportionally changing the blending ratio of the stock supplied to the head box of the paper machine. A sheet is manufactured. Also, the composition of the sheet can be changed within the range of the length of winding, so that it is possible to manufacture from a few meters to a few thousand meters.
【０００５】[0005]
【課題を解決するための手段】このような傾斜機能シー
トは、抄紙機への紙料供給システムとして図１のような
装置を用いることで製造できる。２基のチェスト、ある
決められた時間内で供給量を最大能力の０％から１００
％までの間で、比例的に増加あるいは減少させることが
できるポンプ２基、２種類の紙料が集合する種箱及び白
水に均一に混合されるヘッドタンクから構成される。Such a functionally gradient sheet can be manufactured by using a device as shown in FIG. 1 as a stock material supply system for a paper machine. 2 chests, 0% to 100% of maximum capacity in a fixed time
It consists of two pumps that can be proportionally increased or decreased up to%, a seed box for collecting two types of stock, and a head tank that is uniformly mixed with white water.
【０００６】傾斜機能紙の製造は、次のように行う。２
基のチェストに、それぞれ違う原料の入った紙料を用意
する。片方の紙料をポンプの供給量を、最大供給量の０
％から１００％まで比例的かつ連続的に増加させつつ種
箱に供給する。同時に、もう片方の紙料を、供給量が１
００％から０％に減少させながら供給する。２種類の紙
料は、種箱にて混合された後、ヘッドタンクにおいて均
一に白水に混合され公知の抄紙機のヘッドボックスに供
給する。その紙料は、ヘッドボックスからワイヤー部に
供給され抄き上げられドライヤーにて乾燥後、リールに
連続的に巻き取り傾斜機能紙となる。なお、紙料の供給
量は双方のポンプについて最大供給量の０から１００％
の間で連続的に変化させる場合に限らず、例えば０から
５０％の場合や２０％から８０％のような場合でもよ
い。また、一方のポンプの供給量を一定にし、もう一方
のポンプの供給量のみ変化させてもよい。[0006] The functionally graded paper is manufactured as follows. 2
Prepare stocks containing different ingredients in the base chest. Supply one of the stocks to the pump at the maximum supply of 0
The seed box is fed with a proportional and continuous increase from 100% to 100%. At the same time, the amount of supply of the other stock is 1
Supply while reducing from 00% to 0%. The two types of stock are mixed in a seed box, then uniformly mixed with white water in a head tank, and the mixture is supplied to a head box of a known paper machine. The paper material is supplied from the head box to the wire portion, is made up, is dried by a dryer, and is continuously wound on a reel to be functionally graded paper. The supply of stock is 0 to 100% of the maximum supply for both pumps.
It is not limited to the case where it is continuously changed between 0% and 50%, or may be 20% to 80%. Further, the supply amount of one pump may be fixed and only the supply amount of the other pump may be changed.
【０００７】本発明に用いられる原料は、紙および湿式
不織布の製造に用いられている原料であればとくに制限
されない。針葉樹パルプ、広葉樹パルプ等の木材繊維、
楮、三椏、雁皮、マニラ麻、リンター等の非木材繊維、
レーヨン繊維、ポリエステル繊維、アクリル繊維、ポリ
オレフィン繊維、ポリビニルアルコール繊維等の化学・
合成繊維、炭素繊維、ガラス繊維、ステンレス繊維、ア
ルミナ繊維等の無機・金属繊維、あるいはこれらの繊維
に耐熱性、吸水性、吸油性、耐水性、撥水性、導電性、
クロミック性、エレクトレット性等の特殊な機能が与え
られた機能繊維など、いずれの繊維も利用できる。The raw material used in the present invention is not particularly limited as long as it is a raw material used in the production of paper and wet nonwoven fabric. Wood fibers such as softwood pulp and hardwood pulp,
Non-wood fibers such as mulberry, san tsubaki, goose bark, Manila hemp, linter
Chemistry of rayon fiber, polyester fiber, acrylic fiber, polyolefin fiber, polyvinyl alcohol fiber, etc.
Inorganic / metal fibers such as synthetic fibers, carbon fibers, glass fibers, stainless fibers, and alumina fibers, or heat resistance, water absorption, oil absorption, water resistance, water repellency, electrical conductivity,
Any fiber such as a functional fiber provided with a special function such as chromic property or electret property can be used.
【０００８】原料繊維の組成が同じ場合は、繊維長の違
うものの組合せや、繊維径の違うものの組合せでもよ
い。径の異なるものの組み合わせにより製造されたもの
は、円筒状に巻き取った状態で使用することで密度勾配
型のフィルターとして使用できる。When the raw material fibers have the same composition, a combination of fibers having different fiber lengths or a combination of fibers having different fiber diameters may be used. Those produced by combining those having different diameters can be used as a density gradient type filter by being used in a state of being rolled up in a cylindrical shape.
【０００９】また、原料は繊維に限らず填料、染料、機
能性無機粉体、機能性有機材料等通常の紙および湿式不
織布に添加されるものであればいずれのものも利用でき
る。Further, the raw material is not limited to fiber, and any filler such as filler, dye, functional inorganic powder, functional organic material, etc. can be used as long as it is added to ordinary paper and wet non-woven fabric.
【００１０】原料の組合せの数も２種類に限るものでは
なく３種類でもよいし、あるいはそれ以上でもよい。そ
の場合、片方あるいは双方の紙料に数種類の原料を配合
したものを用いることにより製造できる。The number of combinations of raw materials is not limited to two and may be three or more. In that case, it can be produced by using one or both of the paper materials mixed with several kinds of raw materials.
【００１１】その他、チェスト、ポンプ、配管等の紙料
供給ラインは図１に記載のように２系統にする場合に限
らず、３系統や４系統あるいはそれ以上にして、そのラ
インに原料を供給することもできる。In addition, the stock feed line for chests, pumps, pipes, etc. is not limited to the case of having two lines as shown in FIG. 1, but three lines, four lines or more may be used to supply raw materials to the line. You can also do it.
【００１２】本発明に用いられる原料供給ポンプの種類
は特に制限されない。ダイヤフラム式、プランジャー
式、チューブ式等いかなる方式のポンプでもその回転数
のインバータ制御等により連続的に供給量を変化させる
ことができるものであればよい。The type of the raw material supply pump used in the present invention is not particularly limited. Any type of pump such as a diaphragm type, a plunger type and a tube type may be used as long as the supply amount can be continuously changed by inverter control of the rotation speed.
【００１３】製造に用いられる種箱、ヘッドボックスの
構造も特に制限されるものではない。種箱は、２種類以
上の原料供給ラインが１箇所に集まる構造であればよい
し、ヘッドボックスも種箱にて集合した原料が、均一に
白水に混合されればよい。The structure of the seed box and head box used for manufacturing is not particularly limited. The seed box may have a structure in which two or more kinds of raw material supply lines are gathered at one place, and the head box may be such that the raw materials gathered in the seed box are uniformly mixed with white water.
【００１４】抄紙機の型式も通常の紙および湿式不織布
の製造に用いられているものであれば特に制限されな
い。円網抄紙機、フォーマー型抄紙機、傾斜短網抄紙
機、懸垂短網抄紙機、長網抄紙機などいずれのものも利
用できる。The type of paper machine is not particularly limited as long as it is used in the production of ordinary paper and wet non-woven fabric. Any one of a cylinder paper machine, a former type paper machine, an inclined short-mesh paper machine, a suspended short-mesh paper machine, and a fourdrinier paper machine can be used.
【００１５】傾斜機能シートの長さは特に制限されるも
のではく、数ｍ程度のものから数万ｍ以上のものまで自
由に設定できる。米坪量も１０ｇ／ｍ２のものから２０
０ｇ／ｍ２程度のものまでいずれの場合も製造できる。The length of the functionally gradient sheet is not particularly limited, and can be freely set from several meters to several tens of thousands or more. The basis weight of rice is 20 g from 10 g / m 2
It can be manufactured in any case up to about 0 g / m 2 .
【００１６】[0016]
【実施例】米坪量の測定はＪＩＳ−Ｐ−８１１８紙の米
坪量測定方法により行った。流れ方向への繊維組成の変
化の評価は、抄き始めから終わりにかけての所定の位置
の繊維組成をＪＩＳ−Ｐ−８１２０紙の繊維組成試験方
法により分析した。[Example] The basis weight of rice was measured by the method for measuring the basis weight of JIS-P-8118 paper. In the evaluation of the change in the fiber composition in the machine direction, the fiber composition at a predetermined position from the beginning to the end of paper making was analyzed by the fiber composition test method of JIS-P-8120 paper.
【００１７】実施例１ ０．８％濃度の針葉樹未晒しクラフトパルプ（ＮＵＫ
Ｐ）を紙料１とし、０．８％濃度の針葉樹晒しクラフト
パルプ（ＮＢＫＰ）を紙料２とし、チェスト１及びチェ
スト２に用意した。最初供給量が０リットル／ｍｉｎの
状態の紙料１を川機械工業（株）製チューブポンプＫＢ
Ａ−８５Ｎ型 ＭＨ−５Ｋ式（定トルクモーター仕様）
を用い、そのポンプのトルクをインバータ制御により比
例的に増加させることにで供給量を７０リットル／ｍｉ
ｎまで４分間かけ比例的に増加させつつ種箱に供給し
た。それと同時に、紙料２を同型ポンプにて同様に、供
給量が７０リットル／ｍｉｎから０リットル／ｍｉｎに
比例的に減少させながら種箱に供給した。２種類の紙料
を種箱にて混合後、ヘッドタンクにて白水に均一に混合
させ、紙料濃度０．０７％にて傾斜短網抄紙機のヘッド
ボックスへ供給した。抄紙速度２０ｍ／ｍｉｎで８０メ
ッシュのプラスチックワイヤーにて抄紙し、ドライヤー
にて乾燥後リールに巻き取り米坪量が４８．５ｇ／ｍ２
で抄幅５００ｍｍ、長さ８０ｍの傾斜機能紙を製造し
た。このようにして得られた傾斜機能紙の評価結果を表
１に示す。Example 1 Unbleached kraft pulp of a softwood of 0.8% concentration (NUK
P) was used as the stock 1, and 0.8% concentration of the bleached softwood kraft pulp (NBKP) was used as the stock 2 for the chest 1 and the chest 2. Tube material KB manufactured by Kawa Kikai Kogyo Co., Ltd. with a stock amount of 1 at a supply rate of 0 liter / min.
A-85N type MH-5K type (constant torque motor specification)
And the pump torque is proportionally increased by inverter control to increase the supply volume to 70 liters / mi.
n was fed to the seed box with a proportional increase over 4 minutes. At the same time, the stock material 2 was supplied to the seed box by the same type pump while the supply amount was proportionally reduced from 70 liters / min to 0 liters / min. After mixing two types of paper materials in a seed box, they were uniformly mixed with white water in a head tank and supplied to a head box of a slanted dash paper machine at a paper material concentration of 0.07%. Paper is made with an 80-mesh plastic wire at a papermaking speed of 20 m / min, dried with a dryer, and wound on a reel. The basis weight of rice is 48.5 g / m 2.
Thus, a functionally gradient paper having a papermaking width of 500 mm and a length of 80 m was produced. Table 1 shows the evaluation results of the functionally graded paper thus obtained.
【００１８】[0018]
【表１】 [Table 1]
【００１９】実施例２ ０．６％濃度の３ｄ−５ｍｍレーヨン繊維を紙料１と
し、０．６％濃度の０．７ｄ−５ｍｍレーヨン繊維を紙
料２とし、さらにバインダー繊維として１ｄ−３ｍｍの
ポリビニルアルコール繊維を双方に対原料１０％添加し
て、チェスト１および２に用意した。最初供給量が０リ
ットル／ｍｉｎの状態の紙料１を川機械工業（株）製
チューブポンプＫＢＡ−８５Ｎ型 ＭＨ−５Ｋ式（定ト
ルクモーター仕様）を用い、そのポンプのトルクをイン
バータ制御により比例的に増加させることで供給量を６
３リットル／ｍｉｎまで４分間かけ比例的に増加させつ
つ種箱に供給すると同時に、紙料２を同型ポンプにて同
様に、供給量が６３リットル／ｍｉｎから０リットル／
ｍｉｎに比例的に減少させながら種箱に供給した。２種
類の紙料を種箱にて混合後、ヘッドタンクにて白水に均
一に混合させ、紙料濃度０．０５％にて傾斜短網抄紙機
のヘッドボックスへ供給した。抄紙速度１５ｍ／ｍｉｎ
で８０メッシュのプラスチックワイヤーにて抄紙し、ド
ライヤーにて乾燥後リールに巻き取り米坪量が５５．４
ｇ／ｍ２で抄幅５００ｍｍ、長さ６０ｍの傾斜機能紙を
製造した。このようにして得られた傾斜機能紙の評価結
果を表２に示す。EXAMPLE 2 3d-5mm rayon fiber having a concentration of 0.6% was used as a stock 1, and 0.7d-5mm rayon fiber having a concentration of 0.6% was used as a stock 2, and 1d-3mm was used as a binder fiber. Polyvinyl alcohol fibers were added to both of them to prepare 10% and 2% of raw materials. Initially, stock 1 with a supply rate of 0 liters / min manufactured by Kawa Kikai Kogyo Co., Ltd.
A tube pump KBA-85N type MH-5K type (constant torque motor specification) is used, and the torque of the pump is proportionally increased by inverter control so that the supply amount is 6
At the same time as supplying to the seed box while proportionally increasing to 3 liters / min over 4 minutes, the stock material 2 is similarly fed from 63 liters / min to 0 liters / min by the same type pump.
It was supplied to the seed box while being decreased in proportion to min. After mixing two kinds of paper materials in a seed box, they were uniformly mixed with white water in a head tank, and were supplied to a head box of a slanted braid paper machine at a paper material concentration of 0.05%. Papermaking speed 15m / min
With 80 mesh plastic wire, paper is dried with a dryer and then wound on a reel and the basis weight of rice is 55.4.
A functionally graded paper having a papermaking width of 500 mm and a length of 60 m at g / m 2 was produced. Table 2 shows the evaluation results of the functionally graded paper thus obtained.
【００２０】[0020]
【表２】 [Table 2]
【００２１】[0021]
【発明の効果】原料組成がシートの流れ方向で連続的に
変化しているため、径の異なる繊維を用いて製造したも
のは、巻き取りの状態すなわち円筒状の状態で使用する
ことにより、密度勾配フィルターが製造可能である。EFFECTS OF THE INVENTION Since the raw material composition changes continuously in the flow direction of the sheet, the product manufactured using fibers having different diameters has a Gradient filters can be manufactured.
【００２２】また、製造工程におけるシートの巻き取り
の方向に原料組成が変化するため、２、３ｍのものから
数千ｍの傾斜機能シートが製造可能であり、さらに、巻
き取りの状態で使用するときの径の長さも自由に設定で
きる。Further, since the raw material composition changes in the winding direction of the sheet in the manufacturing process, it is possible to manufacture a functionally gradient sheet having a length of a few meters to a few thousand meters, and used in a wound state. The length of the diameter can be set freely.
【図１】製造工程におけるシートの流れ方向に傾斜機能
を有するシート製造用の紙料供給システムの概略図であ
る。FIG. 1 is a schematic diagram of a sheet stock supply system for sheet production having a tilt function in the sheet flow direction in a production process.
１ チェスト１ ２ チェスト２ ３ インバータ付チューブポンプ１ ４ インバータ付チューブポンプ２ ５ 種箱 ６ ヘッドタンク ７ 抄紙機 ８ 白水循環ポンプ ９ 紙料配管 １０ 白水配管 1 Chest 1 2 Chest 2 3 Tube Pump with Inverter 1 4 Tube Pump with Inverter 2 5 Type Box 6 Head Tank 7 Paper Machine 8 White Water Circulation Pump 9 Paper Pipe 10 White Water Pipe
フロントページの続き (72)発明者 藤原 勝壽 愛媛県川之江市川之江町字広坪281番地の ２ 愛媛県製紙試験場内Continuation of front page (72) Inventor Katsuhiro Fujiwara 2 Ehime Prefectural Paper Mill at 281 Hirotsubo, Kawanoe Town, Kawanoe City, Ehime Prefecture
Claims (2)
おけるシートの流れ方向に原料の組成が連続的に変化す
ることを特徴とする傾斜機能シート状物。1. A functionally-graded sheet-like material, which is made of two or more kinds of raw materials and in which the composition of the raw materials continuously changes in the sheet flow direction in the manufacturing process.
スに連続的に変化させながら供給することによる請求項
１に記載の傾斜機能シートの製造方法及びその装置。2. The method and apparatus for producing a functionally graded sheet according to claim 1, wherein two or more types of stock are supplied to a head box of a paper machine while being continuously changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35459395A JPH09170200A (en) | 1995-12-20 | 1995-12-20 | Sheet having continuous gradient function in flow direction and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35459395A JPH09170200A (en) | 1995-12-20 | 1995-12-20 | Sheet having continuous gradient function in flow direction and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09170200A true JPH09170200A (en) | 1997-06-30 |
Family
ID=18438608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35459395A Pending JPH09170200A (en) | 1995-12-20 | 1995-12-20 | Sheet having continuous gradient function in flow direction and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09170200A (en) |
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| CN106245415A (en) * | 2016-08-26 | 2016-12-21 | 岳阳林纸股份有限公司 | A kind of manufacture method of glassine paper |
| US11612845B2 (en) | 2007-02-02 | 2023-03-28 | Donaldson Company, Inc. | Air filtration media pack, filter element, air filtration media, and methods |
| US12017177B2 (en) | 2007-06-26 | 2024-06-25 | Donaldson Company, Inc. | Filtration media pack, filter element, and methods |
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1995
- 1995-12-20 JP JP35459395A patent/JPH09170200A/en active Pending
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|---|---|---|---|---|
| US11612845B2 (en) | 2007-02-02 | 2023-03-28 | Donaldson Company, Inc. | Air filtration media pack, filter element, air filtration media, and methods |
| US12017177B2 (en) | 2007-06-26 | 2024-06-25 | Donaldson Company, Inc. | Filtration media pack, filter element, and methods |
| US12048888B2 (en) | 2008-07-25 | 2024-07-30 | Donaldson Company, Inc. | Pleated filtration media, media packs, filter elements, and methods for filtering fluids |
| JP2015044200A (en) * | 2009-01-28 | 2015-03-12 | ドナルドソン カンパニー，インコーポレイティド | Fiber medium and method and device for forming the same |
| US9353481B2 (en) | 2009-01-28 | 2016-05-31 | Donldson Company, Inc. | Method and apparatus for forming a fibrous media |
| US9885154B2 (en) | 2009-01-28 | 2018-02-06 | Donaldson Company, Inc. | Fibrous media |
| JP2018150671A (en) * | 2009-01-28 | 2018-09-27 | ドナルドソン カンパニー，インコーポレイティド | Fiber media and forming method and device thereof |
| US10316468B2 (en) | 2009-01-28 | 2019-06-11 | Donaldson Company, Inc. | Fibrous media |
| EP3862474A1 (en) * | 2009-01-28 | 2021-08-11 | Donaldson Company, Inc. | Fibrous media and method and apparatus for forming same |
| US9303339B2 (en) | 2011-01-28 | 2016-04-05 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
| CN106245415A (en) * | 2016-08-26 | 2016-12-21 | 岳阳林纸股份有限公司 | A kind of manufacture method of glassine paper |
| CN106245415B (en) * | 2016-08-26 | 2018-01-23 | 岳阳林纸股份有限公司 | A kind of manufacture method of glassine paper |
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