JPH02127593A - Laminate base paper and production thereof - Google Patents
Laminate base paper and production thereofInfo
- Publication number
- JPH02127593A JPH02127593A JP27935588A JP27935588A JPH02127593A JP H02127593 A JPH02127593 A JP H02127593A JP 27935588 A JP27935588 A JP 27935588A JP 27935588 A JP27935588 A JP 27935588A JP H02127593 A JPH02127593 A JP H02127593A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- base paper
- fibers
- wet
- aromatic polyamide
- 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 11
- 239000000835 fiber Substances 0.000 claims abstract description 46
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000004760 aramid Substances 0.000 claims abstract description 14
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 239000000839 emulsion Substances 0.000 claims abstract description 13
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 13
- 229910000077 silane Inorganic materials 0.000 claims abstract description 9
- -1 silane compound Chemical class 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 235000013311 vegetables Nutrition 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 150000004756 silanes Chemical class 0.000 claims description 2
- 238000004080 punching Methods 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 229920006231 aramid fiber Polymers 0.000 abstract 1
- 239000003623 enhancer Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 24
- 238000002156 mixing Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002655 kraft paper Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229920006321 anionic cellulose Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はフェノール樹脂やエポキシ樹脂および不飽和ポ
リエステル樹脂などの熱硬化性樹脂を塗工或いは含浸し
、熱圧成形を行なって得られる積層板の製造に用いられ
る積層板原紙およびその製造方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a laminate obtained by coating or impregnating a thermosetting resin such as a phenol resin, an epoxy resin, or an unsaturated polyester resin, and then performing hot pressure molding. The present invention relates to a laminated board base paper used in the production of a laminate board and a method for producing the same.
更に詳しくは、特定の性質を有するセルロース系繊維を
主体とし、之に特定割合の芳香族ポリアミド繊維を湿式
法にて混抄すること、更にウレタン系樹脂エマルジョン
、湿潤強度向上剤、シラン化合物の３種の薬品の組合わ
せで処理することを特徴とする機械的強度、熱寸法安定
性、および打ち抜き加工性に優れた積層板を得るための
積層板原紙およびその製造方法に関するものである。More specifically, the paper is made mainly of cellulose fibers having specific properties, mixed with a specific proportion of aromatic polyamide fibers by a wet method, and further includes three types of urethane resin emulsion, wet strength improver, and silane compound. The present invention relates to a laminate base paper for obtaining a laminate with excellent mechanical strength, thermal dimensional stability, and punching workability, which is treated with a combination of chemicals, and a method for manufacturing the same.
近年の半導体技術の進歩に伴い、テレビ、ラジオ、ビデ
オ、パーソナルワープロなどの民生用機器も小型軽量化
及び高性能化が要求され、之に使用される積層板にも薄
く、強く、高性能であることが要求される様になって来
た。With recent advances in semiconductor technology, consumer devices such as televisions, radios, videos, and personal word processors are required to be smaller, lighter, and have higher performance. It has come to be that certain things are required.
それに伴って民生用機器に使用されている積層板の大半
を占めている紙フエノール積層板は、安価で且つ打ち抜
き加工が容易などの特徴を有する上に、之等の軽薄短小
化に対応して、熱寸法安定性１機械的強度の向上が強く
求められる様になって来ている。特に強度に就いては他
の基材を用いた積層板に比べ大きく劣るため、テレビ、
ビデオに使用する場合、特殊な設計或いは補強材の使用
が必要とされている。Along with this, paper phenol laminates, which account for the majority of laminates used in consumer devices, have the characteristics of being inexpensive and easy to punch out. , Thermal dimensional stability 1 There is a strong demand for improvement in mechanical strength. Especially in terms of strength, it is significantly inferior to laminates made of other base materials, so TVs,
For video use, special designs or the use of stiffeners are required.
之等の分野に利用される他の基材としてはガラス繊維や
各種有機合成繊維の湿式不織布或いは織布を基材に用い
た積層板などがある。しかし之等の材料は性能には優れ
ているが非常に高価であり、その製造には特殊な不織布
製造装置或いは織機を必要とするため製造コストも高く
、また品質上では高強度である反面パンチングなどの加
工性に劣る欠点を有しており、安価で且つ性能及び加工
性が優れた積層板は未だ作られていないのが現状である
。Other substrates used in these fields include laminates using wet nonwoven or woven fabrics of glass fiber and various organic synthetic fibers as the substrate. However, although these materials have excellent performance, they are very expensive, and their production requires special nonwoven fabric manufacturing equipment or looms, resulting in high manufacturing costs. However, at present, a laminate that is inexpensive and has excellent performance and workability has not yet been produced.
之迄の紙基材の積層板は機械的強度が弱く脆く割れ易く
、熱線膨張率が大きいなどの問題点があったため、軽薄
短小化などに対応する機能性を付与したものが作れなか
った。Until now, paper-based laminates had problems such as weak mechanical strength, being brittle and easily broken, and a high coefficient of linear thermal expansion, so it was not possible to create products with functionality that would allow them to be made lighter, thinner, shorter, and smaller.
本発明は紙基材積層板の安価で且つ打ち抜き加工性が良
いなどの特徴を維持した侭で機械的強度および熱寸法安
定性を大きく向上させることの出来る積層板原紙を提供
するものである。The present invention provides a laminate base paper that can greatly improve mechanical strength and thermal dimensional stability while maintaining the characteristics of paper-based laminates, such as low cost and good punching workability.
本発明者等は之等の問題点を解決すべく鋭意検討した結
果、炉水度４０〇−以上のセルロース繊維を主体とし、
之に５％以上５０％未満の芳香族ポリアミド繊維を混合
して均一なスラリーとし、湿式法で抄紙した原紙を使用
することで高強度積層板が得られることを見出したもの
である。As a result of intensive studies to solve these problems, the inventors of the present invention found that the main material is cellulose fiber with a reactor water level of 400- or higher.
It has been discovered that a high-strength laminate can be obtained by mixing 5% or more and less than 50% aromatic polyamide fiber with this material to form a uniform slurry, and using a base paper made by a wet method.
また本発明者等は、
１、そのスラリーにウレタン系樹脂エマルジョンを添加
し、続いて湿潤強度向上剤を添加し湿式法にてシート化
し、更にシラン化合物によって処理する。The present inventors also: 1. Add a urethane resin emulsion to the slurry, then add a wet strength improver, form it into a sheet by a wet method, and further treat it with a silane compound.
２、そのスラリーに湿潤強度向上剤を添加し湿式法にて
シート化し、更にウレタン系樹脂エマルジョンとシラン
化合物との混合液で処理する。2. A wet strength improver is added to the slurry, formed into a sheet by a wet method, and further treated with a mixed solution of a urethane resin emulsion and a silane compound.
という３種薬品処理を併せ行なうことにより更に好適な
積層板原紙が得られることを見出して本発明に到達した
。The present invention was achieved by discovering that a more suitable base paper for laminated board could be obtained by performing the three types of chemical treatment.
紙基材積層板の機械的強度および熱寸法安定性が劣る要
因は、紙基材の原料となるセルロース繊維が強度および
熱寸法安定性に劣るためであると考えられる。The reason why the paper base laminate has poor mechanical strength and thermal dimensional stability is thought to be because cellulose fibers, which are the raw material for the paper base, have poor strength and thermal dimensional stability.
之に対して芳香族ポリアミド繊維などの有機合成繊維は
よく知られている様に非常に強度が高く線膨張率がマイ
ナスを示すものがある。但し之等の高強度繊維は非常に
高価、であり、また強度に優れる反面、打ち抜き加工性
に劣る欠点を有する。On the other hand, as is well known, some organic synthetic fibers such as aromatic polyamide fibers have extremely high strength and exhibit a negative coefficient of linear expansion. However, such high-strength fibers are very expensive, and although they have excellent strength, they have the disadvantage of poor punching workability.
そこで、安価で打ち抜き加工性に優れた特定のセルロー
ス繊維に、この高強度繊維を適度に混合抄紙すること、
更に之にウレタン系樹脂エマルジョン、湿潤強度向上剤
、シラン化合物の３種の薬品の組合わせで処理しセルロ
ース系繊維と高強度繊維との親和性を向上させ、且つ後
から含浸或いは塗工する熱硬化樹脂との親和性を向上さ
せることによりそれ等の問題を解決出来ることを見出し
た。Therefore, it is necessary to make paper by appropriately mixing this high-strength fiber with a specific cellulose fiber that is inexpensive and has excellent punching processability.
Furthermore, it is treated with a combination of three types of chemicals: a urethane resin emulsion, a wet strength improver, and a silane compound to improve the affinity between the cellulose fiber and the high-strength fiber. It has been found that these problems can be solved by improving the affinity with the cured resin.
次に本発明を更に詳しく説明する。Next, the present invention will be explained in more detail.
本発明に用いる主原料であるセルロース系繊維としては
、リンターなどの植物系パルプや各種木材パルプを用い
ることが出来る。木材パルプとしてはクラフトパルプ、
サルファイドパルプ、ｆ４解バルブなどを用いることが
出来、特に限定するものではないが、炉水度に就いては
高強度繊維を混合することで基紙自体が低密度化出来る
ため樹脂の浸透性の面から可成り叩解することが出来る
。As the cellulose fiber which is the main raw material used in the present invention, vegetable pulp such as linter and various wood pulps can be used. Craft pulp as wood pulp,
Sulfide pulp, F4 decomposition valve, etc. can be used, and although there are no particular limitations, the density of the base paper itself can be reduced by mixing high-strength fibers, which can reduce the permeability of the resin. It can be beaten considerably from the surface.
しかし積層板にしたときの強度の面からは、枦水度の低
下と共に強度が低下するため高枦水度が必要となるので
４００ｍ１ｌ１以上の物を使用する必要がある。However, in terms of strength when made into a laminate, the strength decreases as the water permeability decreases, so a high water permeability is required, so it is necessary to use a material of 400 ml or more.
本発明に用いる高強度繊維としては高強度で且つ線膨張
率がマイナス或いは非常に小さいことを特徴とするもの
であり、本発明では特に芳香族ポリアミド繊維（メタ型
アラミド繊維、パラ型アラミド（ＰＰＴＡ）、ＰＰＴＡ
に第三成分としてエール結合を含むジアミンを導入した
化学構造を有する繊維）が用いられる。The high-strength fiber used in the present invention is characterized by high strength and a negative or very small coefficient of linear expansion. ), PPTA
A fiber with a chemical structure in which a diamine containing an Ale bond is introduced as a third component is used.
この繊維を木材パルプとの配合率を５％以上５０％未満
で混合し均一なスラリーにし抄紙することにより本発明
の目的とする好適な原紙を得ることが出来る。また高強
度繊維としては芳香族ポリエステル繊維なども用いるこ
とが出来る。A suitable base paper for the purpose of the present invention can be obtained by mixing these fibers with wood pulp at a blending ratio of 5% or more and less than 50%, making a uniform slurry, and making paper. Furthermore, aromatic polyester fibers can also be used as high-strength fibers.
また更に対繊維２％以上２０％以下で好ましくは３％以
上１０％以下のウレタン系樹脂エマルジョンと、対繊維
０．０３％以上１．０％以下で好ましくは０．１％以上
０．５％以下の湿潤強度向上剤および、対繊維Ｏ，ＯＳ
％以上２．０％以下好ましくは０．１％以上１．５％以
下のシラン化合物の３種薬品で処理することにより更に
好適な原紙を得ることが出来る。Furthermore, a urethane resin emulsion of 2% to 20%, preferably 3% to 10%, based on the fiber, and 0.03% to 1.0%, preferably 0.1% to 0.5%, based on the fiber. The following wet strength improvers and fiber O, OS
A more suitable base paper can be obtained by treating with three types of silane compounds in an amount of % or more and 2.0% or less, preferably 0.1% or more and 1.5% or less.
本発明に用いるウレタン系樹脂エマルジョンは架橋構造
体であるために耐水性、耐溶剤性、耐熱性などの物性に
優れてをり、また強靭な皮膜を形成するのでセルロース
繊維と高強度繊維との密着性を向上させる。本発明に用
いる湿潤強度向上剤は湿潤時の紙力を向上させるためだ
けではなく、アニオン性であるセルロース繊維表面にウ
レタン系樹脂エマルジョンの定着を援けるためにカチオ
ン性であることを必要とする。その組成に就いてはメラ
ミン、ポリアクリルアミド系などを用いることが出来、
特に限定するものではない。本発明の使用シラン化合物
は、有機樹脂と有機繊維との接着向上を図るものであり
、使用熱硬化性樹脂と化学共有結合を生じ反応するもの
であれば特に限定はしない。Since the urethane resin emulsion used in the present invention is a crosslinked structure, it has excellent physical properties such as water resistance, solvent resistance, and heat resistance.It also forms a tough film, which allows it to combine cellulose fibers and high-strength fibers. Improves adhesion. The wet strength improver used in the present invention needs to be cationic not only to improve the paper strength when wet, but also to help fix the urethane resin emulsion on the anionic cellulose fiber surface. . Regarding its composition, melamine, polyacrylamide, etc. can be used.
It is not particularly limited. The silane compound used in the present invention is intended to improve the adhesion between an organic resin and an organic fiber, and is not particularly limited as long as it forms a chemical covalent bond and reacts with the thermosetting resin used.
斯くして得られる木材パルプと高強度繊維混合スラリー
より得られる混抄紙から成るＭＭ板は、高強度繊維を含
有するために機械的強度および熱寸法安定性に優れ且つ
電気特性、耐熱性にも優れており、セルロース系繊維が
主体であるために安価で且つ打ち抜き加工性が容易であ
る。また、３種の薬品で処理した混抄紙から成る積層板
はセルロース系繊維と高強度繊維の親和性および之等の
繊維と熱硬化性樹脂との親和性に優れているため之等の
繊維の特性を充分に発揮し、また電気絶縁用基材として
の電気特性、耐熱性などの特性も更に向上している・
尚、高強度繊維の配合率を５％以上５０％未満にした理
由は、５％未濶では強度が低く、また５０％以上の配合
率では打ち抜き加工が困難と成るためである。The MM board made of mixed paper obtained from the wood pulp and high-strength fiber mixed slurry thus obtained has excellent mechanical strength and thermal dimensional stability because it contains high-strength fibers, and also has excellent electrical properties and heat resistance. Since it is mainly composed of cellulose fibers, it is inexpensive and easy to punch out. In addition, the laminate made of mixed paper treated with three types of chemicals has excellent affinity for cellulose fibers and high-strength fibers, and for these fibers and thermosetting resins. It fully demonstrates its characteristics, and further improves its electrical properties and heat resistance as a base material for electrical insulation.The reason for setting the blending ratio of high-strength fibers to 5% or more and less than 50% is as follows. This is because if the content is 5%, the strength is low, and if the content is 50% or more, punching becomes difficult.
以下、本発明の効果を実施例によって示す。尚、実施例
、比較例の％は重量％である。Hereinafter, the effects of the present invention will be illustrated by examples. Note that % in Examples and Comparative Examples is % by weight.
実施例Ｉ
Ｉ水度４５０−のクラフトパルプと芳香族ポリアミドの
配合率が、夫々７０％と３０％の混合物スラリ−を講製
した後、湿式法によりシート化乾燥させ坪］１３５ｇ／
イ、密度０．５ｇ／ａｊの原紙を得た。Example I After preparing a slurry of a mixture of kraft pulp with a water content of 450 and aromatic polyamide at a blending ratio of 70% and 30%, respectively, it was formed into a sheet by a wet method and dried to produce a sheet of 135 g/
A. A base paper with a density of 0.5 g/aj was obtained.
この原紙に市販アルコール溶性フェノール樹脂（商品名
Ｂ Ｌ Ｓ −３１２２：昭和高分子■製）を含浸させ
乾燥させて樹脂含有率×が５０％のプリプレグを作成し
た。This base paper was impregnated with a commercially available alcohol-soluble phenol resin (trade name: BL S-3122, manufactured by Showa Kobunshi ■) and dried to prepare a prepreg with a resin content of 50%.
このプリプレグを８枚重ね、１５５℃、 １００ｋｇ／
ａｄ。Stack 8 sheets of this prepreg at 155℃, 100kg/
ad.
６０分間の条件で熱圧成形し、加圧状態の４１１３０分
間冷却後、板厚１．６ｍｍの積層板を得た。After hot-pressing for 60 minutes and cooling under pressure for 41130 minutes, a laminate with a thickness of 1.6 mm was obtained.
実施例２
炉水度４５０成のクラフトパルプと芳香族ポリアミド繊
維との配合率が、夫々７０％と３０％の混合物スラリー
に、ウレタン系樹脂エマルジョン（商品名スーパーフレ
ックス：第一工業製薬＠製）を対繊維５％添加し、続い
て湿潤強度向上剤（商品名スミレンツ６０フ：住友化学
工業（４１製）を対繊維０．２％添加し、このスラリー
を湿式法によりシート化し乾燥後、シランカップリング
剤（商品名５Ｈ６０２０：東しシリコン■製）を対繊維
０．２％付着させ乾燥し１坪竜１３５ｇ／イ、密度０．
５ｇ／ｆｆｌの原紙を得た。 更に実施例１と同様にし
てプリプレグ、更に続いて積層板を得た。Example 2 A urethane resin emulsion (trade name: Superflex: manufactured by Daiichi Kogyo Seiyaku@) was added to a slurry of a mixture of kraft pulp with a furnace water temperature of 450 and aromatic polyamide fibers at a blending ratio of 70% and 30%, respectively. Next, 0.2% of a wet strength improver (trade name Sumirenz 60F, manufactured by Sumitomo Chemical Industries, Ltd. (41)) was added to the fibers, this slurry was formed into a sheet by a wet method, and after drying, silane was added. Coupling agent (product name 5H6020: manufactured by Toshi Silicon ■) was applied at 0.2% to the fibers and dried to give a density of 0.
A base paper of 5 g/ffl was obtained. Furthermore, a prepreg and a laminate were obtained in the same manner as in Example 1.
実施例３
炉水度４５０ｍ１２のクラフトパルプと芳香族ポリアミ
ド繊維との配合率が、６０％、４０％の混合物スラリー
に、湿潤強度向上剤（商品名スミレンツ６０フ：住友化
学工業■製）を対繊維０．２％添加し、このスラリーを
湿式法によりシート化し乾燥後、ウレタン系樹脂エマル
ジョン（商品名スーパーフレックス：第−工業製薬味製
）と、シランカップリング剤（商品名Ｓ Ｈ６０２０：
東しシリコン■製）との混合液で、夫々対繊維に５％、
０．２％付着させ乾燥し９坪４１ｔ１３５ ｇ ／ ｒ
ｎ’、密度０．５ｇ／ａｌｌの原紙を得た。Example 3 A wet strength improver (trade name: Sumirenz 60F, manufactured by Sumitomo Chemical Co., Ltd.) was added to a slurry of a mixture of kraft pulp and aromatic polyamide fiber at a furnace water level of 450 m12 with a blending ratio of 60% and 40%. After adding 0.2% fiber and forming this slurry into a sheet using a wet method and drying, a urethane resin emulsion (trade name: Superflex, manufactured by Dai-Kogyo Seiyaku Aji) and a silane coupling agent (trade name: SH6020:
Mixed liquid with Toshi Silicon ■), 5% to fiber, respectively.
0.2% deposited and dried 9 tsubo 41t135 g/r
A base paper having a density of 0.5 g/all was obtained.
更に実施例１と同様にしてプリプレグ、更に続いて積層
板を得た。Furthermore, a prepreg and a laminate were obtained in the same manner as in Example 1.
比較例１
炉水度４５０ｍ１のクラフトパルプを用い、湿式法によ
り坪量１３５ｇ／ｒｎ’、密度０．５ｇ／ａＪの原紙を
得た。Comparative Example 1 A base paper having a basis weight of 135 g/rn' and a density of 0.5 g/aJ was obtained by a wet method using kraft pulp with a furnace water level of 450 ml.
以下、実施例１と同様にしてプリプレグ、更に続いて積
層板を得た。Thereafter, a prepreg and a laminate were obtained in the same manner as in Example 1.
比較例２
芳香族ポリアミド繊維１００％を用いた以外は、比較例
１と同様にして積層板を得た６
実施例１から３、比較例１，２により得られた積層板に
就いてその特性を試験した結果を第１表に示した。Comparative Example 2 A laminate was obtained in the same manner as in Comparative Example 1 except that 100% aromatic polyamide fiber was used6 Characteristics of the laminates obtained in Examples 1 to 3 and Comparative Examples 1 and 2 The results of the tests are shown in Table 1.
以下余白
第１表
ＪＩＳ−Ｃ６／１８１およびＪＩＳ−に６９１１による
。The following margins are based on Table 1: JIS-C6/181 and JIS-6911.
ダイスの孔壁間隔力℃、８．１．０．１，２．１．６＋
ｎｍである直径１．０．１．２．１．７゜２．１ｎａの
角孔の対を備え、ポンチとダイスとの片側のクリアラン
スが０．０５ｍａ＋である試験金型を用いて打ち抜きを
行ない、打ち抜き後の表面。Die hole wall spacing force °C, 8.1.0.1, 2.1.6+
Punching was performed using a test die equipped with a pair of square holes with a diameter of 1.0.1.2.1.7°2.1 nm and a clearance of 0.05 ma+ on one side between the punch and die. , surface after punching.
孔、切り口の状態に就いてＡＳＴＭ Ｄ ６１７に準じ
て判定し、優、良、可、不可の４段階に評価した。The condition of holes and cut edges was judged according to ASTM D 617 and evaluated in four stages: excellent, good, fair, and poor.
押棒式熱膨張計を用い荷重５ｇ、昇温速度５℃／分（冷
却は放冷）の条件下で膨張を５０℃から１５０℃、冷却
を１５０℃から５０℃の温度範囲で実施し〔発明の効果
〕
第１表に示す様に実施例１は、比較例１のクラフトパル
プ１００％のものに比べ、曲げ強度で２倍。Using a push rod type thermal dilatometer, expansion was carried out in the temperature range of 50 to 150 °C and cooling was carried out in the temperature range of 150 to 50 °C under the conditions of a load of 5 g and a temperature increase rate of 5 °C/min (cooling was left to cool) [Invention [Effect] As shown in Table 1, Example 1 has twice the bending strength of Comparative Example 1, which is made of 100% kraft pulp.
落球衝撃強度では１０倍の強度を持ち、熱線膨張率は２
分の１となり、更には比較例２の様に打ち抜き加工が不
可能ではなく、寧ろ比較例１に比べても打ち抜き加工性
に優れたものであった。また実施例２，３に就いては実
施例１より曲げ強度、落球衝撃強度、熱寸法安定性共に
向上しており、曲げ強度で２倍以上、落球衝撃強度で１
２倍以上、熱寸法安定性では２分の１以下となり、打ち
抜き加工性に就いても僅れたものであった。It has 10 times the impact strength of a falling ball and has a coefficient of linear thermal expansion of 2.
Furthermore, unlike Comparative Example 2, it was not impossible to punch out, and in fact, it was superior in punching workability compared to Comparative Example 1. In addition, Examples 2 and 3 have improved bending strength, falling ball impact strength, and thermal dimensional stability compared to Example 1, with the bending strength being more than double and the falling ball impact strength being 1.
The thermal dimensional stability was more than double, the thermal dimensional stability was less than half, and the punching workability was also poor.
以上の様に本発明の積層板原紙は、安価であり且つ積層
板にした時の打ち抜き加工性が良好であるだけでなく機
械的強度、熱寸法安定性に優れたものであり、その工業
的価値は極めて大きい。As described above, the laminated board base paper of the present invention is not only inexpensive and has good punching workability when made into a laminate, but also has excellent mechanical strength and thermal dimensional stability. The value is extremely large.
特許出願人 山陽国策パルプ株式会社Patent applicant: Sanyo Kokusaku Pulp Co., Ltd.
Claims (1)
し、５％以上５０％未満の芳香族ポリアミド繊維を含む
積層板原紙。 ２ ろ水度４００ｍｌ以上のセルロース系繊維を主体と
し５％以上５０％未満の芳香族ポリアミド繊維を含むス
ラリーを湿式法によりシート化し乾燥することを特徴と
する請求項１記載の積層板原紙の製造方法。 ３ ろ水度４００ｍｌ以上のセルロース系繊維を主体と
し、５％以上５０％未満の芳香族ポリアミド繊維を含み
更に、ウレタン系樹脂エマルジョン、湿潤紙力向上剤、
シラン化合物の３種薬品処理を施された積層板原紙。 ４ ５％以上５０％未満の芳香族ポリアミド繊維を含む
、ろ水度４００ｍｌ以上のセルロース系繊維を主体とし
たスラリーに、対繊維２％以上２０％以下のウレタン系
樹脂エマルジョンを添加し、続いて対繊維０．０３％以
上２．０％以下の湿潤紙力向上剤を添加し湿式法により
シート化し乾燥後、対繊維０．０５％以上２．０％以下
のシラン化合物で処理することを特徴とする請求項３記
載の積層板原紙の製造方法。 ５ ５％以上５０％未満の芳香族ポリアミド繊維を含む
ろ水度４００ｍｌ以上のセルロース系繊維を主体とした
スラリーに、対繊維０．０３％以上２．０％以下の湿潤
強度向上剤を添加し、湿式法によりシート化し乾燥後、
対繊維２％以上２０％以下のウレタン系樹脂エマルジョ
ンと対繊維０．０５％以上２．０％以下のシラン化合物
の混合液で処理して得られることを特徴とする請求項３
記載の積層板原紙の製造方法。 ６ セルロース系繊維が木材パルプ単独或いはリンター
などの植物系パルプまたはそれ等の混合物である請求項
１〜５中の何れかの項に記載の積層板原紙。 ７ セルロース系繊維が木材パルプ単独或いはリンター
などの植物系パルプまたはそれ等の混合物であることを
特徴とする請求項１〜５中の何れか１項に記載の積層板
原紙の製造方法。[Scope of Claims] 1. Laminated board base paper mainly composed of cellulose fibers with a freeness of 400 ml or more and containing 5% or more and less than 50% aromatic polyamide fibers. 2. The production of the base paper for laminate board according to claim 1, characterized in that a slurry mainly composed of cellulose fibers with a freeness of 400 ml or more and containing aromatic polyamide fibers of 5% or more and less than 50% is formed into a sheet by a wet process and dried. Method. 3 Mainly composed of cellulose fibers with a freeness of 400 ml or more, containing aromatic polyamide fibers of 5% or more and less than 50%, and further containing a urethane resin emulsion, a wet paper strength improver,
Laminated board base paper treated with three types of silane compounds. 4 Add a urethane resin emulsion of 2% to 20% based on the fibers to a slurry mainly composed of cellulose fibers with a freeness of 400 ml or more and containing 5% or more and less than 50% aromatic polyamide fibers, and then It is characterized by adding a wet paper strength improver of 0.03% to 2.0% to the fiber, forming it into a sheet by a wet method, and after drying, treating it with a silane compound of 0.05% to 2.0% to the fiber. The method for producing a laminated board base paper according to claim 3. 5 Adding a wet strength improver of 0.03% to 2.0% based on the fibers to a slurry mainly composed of cellulose fibers with a freeness of 400 ml or more and containing aromatic polyamide fibers of 5% or more and less than 50%. , After forming into a sheet by wet method and drying,
Claim 3 characterized in that it is obtained by processing with a mixed solution of a urethane resin emulsion containing 2% to 20% of fiber and a silane compound containing 0.05% to 2.0% of fiber.
A method for producing the described laminated board base paper. 6. The laminated board base paper according to any one of claims 1 to 5, wherein the cellulose fiber is wood pulp alone, a vegetable pulp such as linter, or a mixture thereof. 7. The method for producing a laminated board base paper according to any one of claims 1 to 5, wherein the cellulose fiber is wood pulp alone, a vegetable pulp such as linter, or a mixture thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27935588A JPH02127593A (en) | 1988-11-07 | 1988-11-07 | Laminate base paper and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27935588A JPH02127593A (en) | 1988-11-07 | 1988-11-07 | Laminate base paper and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02127593A true JPH02127593A (en) | 1990-05-16 |
| JPH0447079B2 JPH0447079B2 (en) | 1992-07-31 |
Family
ID=17610018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27935588A Granted JPH02127593A (en) | 1988-11-07 | 1988-11-07 | Laminate base paper and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02127593A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214633B2 (en) * | 2001-12-18 | 2007-05-08 | Kimberly-Clark Worldwide, Inc. | Polyvinylamine treatments to improve dyeing of cellulosic materials |
| JP2012116905A (en) * | 2010-11-30 | 2012-06-21 | Oji Paper Co Ltd | Method for producing composite porous sheet of microfibrous cellulose |
| WO2017170781A1 (en) * | 2016-03-30 | 2017-10-05 | 旭化成株式会社 | Resin composite film including cellulose microfiber layer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838007A (en) * | 1971-09-16 | 1973-06-05 | ||
| JPS5545885A (en) * | 1978-07-25 | 1980-03-31 | Uk Nauchinoopuroizubuodozubuen | Method and apparatus for producing synthetic fiber pulp |
| JPS6028434A (en) * | 1983-07-26 | 1985-02-13 | Shin Kobe Electric Mach Co Ltd | Preparation of laminate |
-
1988
- 1988-11-07 JP JP27935588A patent/JPH02127593A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838007A (en) * | 1971-09-16 | 1973-06-05 | ||
| JPS5545885A (en) * | 1978-07-25 | 1980-03-31 | Uk Nauchinoopuroizubuodozubuen | Method and apparatus for producing synthetic fiber pulp |
| JPS6028434A (en) * | 1983-07-26 | 1985-02-13 | Shin Kobe Electric Mach Co Ltd | Preparation of laminate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214633B2 (en) * | 2001-12-18 | 2007-05-08 | Kimberly-Clark Worldwide, Inc. | Polyvinylamine treatments to improve dyeing of cellulosic materials |
| JP2012116905A (en) * | 2010-11-30 | 2012-06-21 | Oji Paper Co Ltd | Method for producing composite porous sheet of microfibrous cellulose |
| WO2017170781A1 (en) * | 2016-03-30 | 2017-10-05 | 旭化成株式会社 | Resin composite film including cellulose microfiber layer |
| JPWO2017170781A1 (en) * | 2016-03-30 | 2018-11-29 | 旭化成株式会社 | Resin composite film including cellulose fine fiber layer |
| JP2020045496A (en) * | 2016-03-30 | 2020-03-26 | 旭化成株式会社 | Resin composite film including cellulose microfiber layer |
| US10703070B2 (en) | 2016-03-30 | 2020-07-07 | Asahi Kasei Kabushiki Kaisha | Resin composite film including cellulose microfiber layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447079B2 (en) | 1992-07-31 |
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