JPH0529549B2 - - Google Patents
Info
- Publication number
- JPH0529549B2 JPH0529549B2 JP1098453A JP9845389A JPH0529549B2 JP H0529549 B2 JPH0529549 B2 JP H0529549B2 JP 1098453 A JP1098453 A JP 1098453A JP 9845389 A JP9845389 A JP 9845389A JP H0529549 B2 JPH0529549 B2 JP H0529549B2
- Authority
- JP
- Japan
- Prior art keywords
- thermosetting resin
- impregnated paper
- sheets
- impregnated
- resin
- 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 - Lifetime
Links
- 229920001187 thermosetting polymer Polymers 0.000 claims description 30
- 239000011120 plywood Substances 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000123 paper Substances 0.000 description 41
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- 238000000465 moulding Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 238000007731 hot pressing Methods 0.000 description 6
- 238000010030 laminating Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 241000758789 Juglans Species 0.000 description 2
- 235000009496 Juglans regia Nutrition 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 235000020234 walnut Nutrition 0.000 description 2
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 244000086363 Pterocarpus indicus Species 0.000 description 1
- 235000009984 Pterocarpus indicus Nutrition 0.000 description 1
- 241000219492 Quercus Species 0.000 description 1
- 240000002871 Tectona grandis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011101 paper laminate Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- -1 vinyl butyral-modified phenolic resin Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、化粧合板、特に車輌内装用の化粧合
板の製造法に関し、広範囲の温度変動等に対して
も高い形状安定性が維持でき、かつ成形加工性を
向上させるものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing decorative plywood, especially decorative plywood for vehicle interiors, which can maintain high shape stability even under wide temperature fluctuations, etc. It also improves moldability.
［従来の技術］
従来、車輌内装用化粧合板の一例として、第２
図に示したような、熱硬化性樹脂含浸紙１ａ，１
ａ……を積層した積層物の表面に化粧単板３が配
されてなるものがある。[Prior art] Conventionally, as an example of decorative plywood for vehicle interiors,
Thermosetting resin impregnated paper 1a, 1 as shown in the figure
There is one in which a decorative veneer 3 is arranged on the surface of a laminate made of laminated materials such as a.
そしてこのような化粧合板の製造は、まず目的
枚数の熱硬化性樹脂含浸紙１ａ，１ａ……を積層
し、この積層物の表面に化粧単板３を重ね合わせ
た後、この重ね合わせ物を一体的に熱圧して硬
化、接着する方法などによつて行つていた。 To manufacture such decorative plywood, first, a desired number of sheets of thermosetting resin-impregnated paper 1a, 1a... are laminated, and after overlaying the decorative veneer 3 on the surface of this laminate, this laminated product is This was done by heat-pressing, curing, and bonding the material in one piece.
［発明が解決しようとする課題］
ところがこのような化粧合板の製造法にあつて
は、上述のように目的枚数の総ての熱硬化性樹脂
含浸紙１ａ，１ａ……を一体的に熱圧して硬化、
接着するので、熱圧時に樹脂液中の水分を揮散さ
せることが難しく、熱圧後の熱硬化性樹脂含浸紙
積層物中に水分が残つてしまうことが多かつた。
そのため、このものを長時間高温条件下で放置す
ると、水分あるいは温度変化等に起因して、寸法
変化や形状変化が生じる不都合があり、温度変化
の激しい車輌内装用途には適さない問題があつ
た。またこの方法によつては化粧合板の成形加工
性が悪く、曲率半径の比較的小さな曲面形状に成
形することが難しかつた。また曲面成形を行つた
場合にも、成形加工後の形状安定性が低く、高温
下で長時間放置すると、やはり反りなどの形状変
化を生じる不都合が生じた。[Problems to be Solved by the Invention] However, in the method of manufacturing such decorative plywood, as mentioned above, all the thermosetting resin-impregnated papers 1a, 1a, . . . of the target number are integrally heat-pressed. harden,
Because of the adhesion, it was difficult to volatilize the moisture in the resin liquid during hot pressing, and moisture often remained in the thermosetting resin-impregnated paper laminate after hot pressing.
Therefore, if this product is left under high-temperature conditions for a long period of time, there is a problem that the dimensions and shape will change due to moisture or temperature changes, making it unsuitable for vehicle interior applications where temperature changes are large. . Furthermore, with this method, the decorative plywood had poor moldability, and it was difficult to mold the decorative plywood into a curved shape with a relatively small radius of curvature. Further, even when curved surface molding was performed, the shape stability after the molding process was low, and if left for a long time at high temperatures, there was also the disadvantage that shape changes such as warping occurred.
そこで本発明は、温度変化などの環境条件の大
きな変動によつても高い寸法安定性および形状安
定性を維持でき、かつ成形加工性の良好な車輌内
装用途に好適な化粧合板を得ることのできる車輌
内装用化粧合板の製造法を提供することを目的と
する。 Therefore, the present invention makes it possible to obtain a decorative plywood suitable for vehicle interior applications that can maintain high dimensional stability and shape stability even under large fluctuations in environmental conditions such as temperature changes, and has good moldability. The purpose of this invention is to provide a method for manufacturing decorative plywood for vehicle interiors.
［課題を解決するための手段］
本発明は、熱硬化性樹脂含浸紙を、最終的に必
要とする枚数を幾組かに分割してなる比較的少な
い枚数毎に積層し、それぞれを熱圧して熱硬化性
樹脂含浸紙積層硬化シートを作成する第１工程
と、さらにこれらの熱硬化性樹脂含浸紙積層硬化
シートと、接着剤含浸紙とを交互に重ね合わせ、
この重ね合わせ物の表面に化粧単板を配し、再び
熱圧する第２工程とに分けて行うことにより、上
記課題を解決するようにした。[Means for Solving the Problems] The present invention involves dividing thermosetting resin-impregnated paper into several groups, stacking them into relatively small numbers of sheets, and applying heat pressure to each layer. a first step of creating a thermosetting resin-impregnated paper laminated cured sheet; further, alternately stacking these thermosetting resin-impregnated paper laminated cured sheets and adhesive-impregnated paper;
The above-mentioned problem was solved by separately performing the second step of disposing a decorative veneer on the surface of this stacked product and heat-pressing it again.
［作用］
このように、目的の化粧合板を、第１工程と第
２工程を有する方法により製造するので、目的枚
数の総ての熱硬化性樹脂含浸紙を一体的に熱圧す
る従来の化粧合板の製造法に比べ、第１工程の熱
圧過程で樹脂中に含有されている水分を揮散させ
易くなるうえ、第２工程の熱圧過程で、さらに残
つた水分が揮散されるので、得られた化粧合板中
に含まれる水分量は非常に少ないものとなる。し
たがつて、たとえ高温下で長時間放置しても、水
分や温度変化を起因とする寸法変化や形状変化が
防止される利点があり、温度変化の激しい車輌内
装用の化粧合板として好適に使用することができ
る。また各熱硬化性樹脂含浸紙積層硬化シートの
接着には、接着剤含浸紙を用いるので、液状接着
剤による接着に比べて、水分の混入を避けること
ができるうえに、補強効果もあり、層間剥離を生
じない利点もある。またこの方法によれば、成形
加工性が良好で、曲面成形も容易となり、曲面成
形後の形状安定性も優れている。[Function] In this way, the desired decorative plywood is manufactured by the method having the first step and the second step, so the conventional decorative plywood is manufactured by integrally heat-pressing all the desired number of sheets of thermosetting resin-impregnated paper. Compared to the manufacturing method of The amount of water contained in the decorative plywood is extremely small. Therefore, it has the advantage of preventing dimensional and shape changes caused by moisture and temperature changes even if it is left at high temperatures for long periods of time, making it suitable for use as decorative plywood for vehicle interiors, which are subject to rapid temperature changes. can do. In addition, since adhesive-impregnated paper is used to adhere each thermosetting resin-impregnated paper laminated cured sheet, it is possible to avoid moisture contamination compared to adhesion using liquid adhesive, and it also has a reinforcing effect, allowing It also has the advantage of not causing peeling. Further, according to this method, the molding processability is good, curved surface molding is easy, and the shape stability after curved surface molding is also excellent.
以下、本発明を図面を参照して工程順に詳しく
説明する。 Hereinafter, the present invention will be explained in detail in the order of steps with reference to the drawings.
第１図に、本発明の車輌内装用化粧合板の製造
法の一例を示す。 FIG. 1 shows an example of the method for producing decorative plywood for vehicle interiors according to the present invention.
まず第１工程として、熱硬化性樹脂含浸紙積層
硬化シート１を作成する。この熱硬化性樹脂含浸
紙積層硬化シート１は、厚さ0.1〜0.3mm程度のク
ラフト紙やレーヨン紙等の原紙あるいはビニロン
繊維、アクリル繊維等からなる不織布（坪量40〜
200ｇ／m2程度）などに、フエノール樹脂、ジア
リルフタレート樹脂、グアナミン樹脂、エポキシ
樹脂、不飽和ポリエステル樹脂などの熱硬化性樹
脂の未硬化液を含浸させてなる樹脂含浸紙１ａ，
１ａ……を複数枚積層し、熱圧して硬化、接着さ
せて作成する。この時の上記樹脂含浸紙１ａ，１
ａ……の積層枚数は、目的の化粧合板に最終的に
使用される熱硬化性樹脂含浸紙１ａ，１ａ……の
枚数を幾組かに分割した枚数であればよいが、形
状安定性改善効果および成形加工性改善効果が充
分得られる点から２〜７枚程度が好ましい。また
上記樹脂液の含浸量は、先の原紙あるいは不織布
の重量が、含浸後の乾燥重量で0.3〜1.0倍となる
程度が好ましい。またこの熱硬化性樹脂液中に
は、必要に応じて適宜の充填剤、着色剤等の添加
剤が添加されてもよい。 First, as a first step, a thermosetting resin-impregnated paper laminated cured sheet 1 is created. This thermosetting resin-impregnated paper laminated cured sheet 1 is made of base paper such as kraft paper or rayon paper with a thickness of about 0.1 to 0.3 mm, or a nonwoven fabric (basis weight 40 to
Resin-impregnated paper 1a , which is made by impregnating uncured liquid of thermosetting resin such as phenol resin, diallyl phthalate resin, guanamine resin, epoxy resin, unsaturated polyester resin, etc.
It is made by laminating multiple sheets of 1a, heat-pressing them, curing them, and adhering them. At this time, the above resin-impregnated paper 1a, 1
The number of laminated sheets of a... may be the number divided into several sets of the number of sheets of thermosetting resin impregnated paper 1a, 1a... that will ultimately be used for the intended decorative plywood, but it is sufficient to improve the shape stability. The number of sheets is preferably about 2 to 7, since the effect and molding processability improvement effect can be sufficiently obtained. The amount of the resin liquid impregnated is preferably such that the dry weight after impregnation is 0.3 to 1.0 times the weight of the base paper or nonwoven fabric. Further, appropriate additives such as fillers and colorants may be added to this thermosetting resin liquid as necessary.
このような熱硬化性樹脂含浸紙１ａ，１ａ……
を複数枚積層した後、温度80〜180℃、好ましく
は140〜160℃程度、圧力４〜15MPa、好ましく
は8MPa程度の条件で、平坦な圧締板に挟持して
熱圧し、硬化、接着して上記の熱硬化性樹脂含浸
紙積層硬化シート１，１……を得る。 Such thermosetting resin impregnated papers 1a, 1a...
After laminating multiple sheets, they are sandwiched between flat pressing plates and heat-pressed to harden and bond at a temperature of 80 to 180℃, preferably about 140 to 160℃, and a pressure of 4 to 15MPa, preferably about 8MPa. The above-mentioned thermosetting resin-impregnated paper laminated cured sheets 1, 1... are obtained.
次いで、第２工程として、この熱硬化性樹脂含
浸紙積層硬化シート１，１……と、接着剤含浸紙
２，２……とを交互に重ね合わせ、さらにこの重
ね合わせ物の両面あるいは片面に化粧単板３を配
して、熱圧する。接着剤含浸紙２，２……は、厚
さ0.02〜0.08mm程度のクラフト紙やレーヨン紙等
の原紙やビニロン繊維、アクリル繊維等からなる
不織布（坪量20〜80ｇ／m2程度）などにフエノー
ル樹脂、エポキシ樹脂、ビニルブチラール変性フ
エノール樹脂、ニトリル変性フエノール樹脂など
の熱硬化性樹脂製接着剤を含浸させ、乾燥あるい
は半乾燥状態としたものである。この接着剤含浸
紙２，２……と上記熱硬化性樹脂含浸紙積層硬化
シート１，１……とを交互に重ね合わせるに際
し、この接着剤含浸紙２，２……をシート１，１
……間にのみ挟んでもよいが、シート１と化粧単
板３との間にも挟み込むことが好ましく、これに
よつて化粧単板３を強固に接着することができ
る。また化粧単板３には、ナラ、チーク、ウオル
ナツト、ローズウツドなどの厚さ0.15〜0.5mm程
度の化粧単板が好適に使用される。 Next, as a second step, the thermosetting resin-impregnated paper laminated cured sheets 1, 1... and the adhesive-impregnated papers 2, 2... are stacked alternately, and then both or one side of this stack is coated. The decorative veneer 3 is placed and hot pressed. Adhesive-impregnated paper 2, 2... is a base paper such as kraft paper or rayon paper with a thickness of about 0.02 to 0.08 mm, or a nonwoven fabric (basis weight about 20 to 80 g/ m2 ) made of vinylon fiber, acrylic fiber, etc. It is impregnated with a thermosetting resin adhesive such as phenolic resin, epoxy resin, vinyl butyral-modified phenolic resin, or nitrile-modified phenolic resin, and left in a dry or semi-dry state. When these adhesive-impregnated papers 2, 2... and the thermosetting resin-impregnated paper laminated cured sheets 1, 1... are stacked alternately, the adhesive-impregnated papers 2, 2... are stacked on sheets 1, 1...
Although it may be sandwiched only between the sheet 1 and the decorative veneer 3, it is preferable to sandwich it also between the sheet 1 and the decorative veneer 3, so that the decorative veneer 3 can be firmly bonded. Further, as the decorative veneer 3, a decorative veneer of about 0.15 to 0.5 mm in thickness, such as oak, teak, walnut, or rosewood, is suitably used.
この際の熱圧は、通常温度80〜150℃、好まし
くは120〜140℃程度、圧力0.5〜2MPa程度の条件
で行い、各熱硬化性樹脂含浸紙積層硬化シート
１，１……および化粧単板２を接着一体化させる
が、加圧条件が比較的低いので、この時同時に曲
面成形を行うこともできる。曲面成形は、雄型と
雌型とからなる所望の形状の成形型を用いて熱圧
を行えばよく、これによつて所望の形状に成形さ
れた積層物が得られる。 The heat pressure at this time is usually carried out at a temperature of 80 to 150°C, preferably about 120 to 140°C, and a pressure of about 0.5 to 2 MPa. Although the plates 2 are bonded and integrated, since the pressure conditions are relatively low, curved surface forming can also be performed at the same time. Curved surface molding may be carried out by hot pressing using a mold having a desired shape consisting of a male mold and a female mold, thereby obtaining a laminate molded into a desired shape.
またさらに、この化粧単板３の表面には、適宜
塗装を施すこともできる。塗装方法は特に限定さ
れないが、通常メラミン樹脂塗料、エポキシ樹脂
塗料、不飽和ポリエステル樹脂塗料、ポリウレタ
ン樹脂塗料、アクリル樹脂塗料などの透明塗料を
刷毛塗り、スプレー塗りなどの常法によつて塗布
し、乾燥して、厚さ0.2〜0.8mm程度の無色透明あ
るいは着色透明の塗膜を形成する。 Furthermore, the surface of this decorative veneer 3 can be coated as appropriate. The coating method is not particularly limited, but usually a transparent paint such as melamine resin paint, epoxy resin paint, unsaturated polyester resin paint, polyurethane resin paint, or acrylic resin paint is applied by a conventional method such as brushing or spraying. When dried, it forms a colorless transparent or colored transparent coating film with a thickness of about 0.2 to 0.8 mm.
このような方法によれば、第１工程で比較的少
ない枚数の熱硬化性樹脂含浸紙１ａ，１ａ……を
積層して熱圧を行うので、この段階において樹脂
中の水分が揮散され易くなる。また第２工程で、
熱硬化性樹脂含浸紙積層硬化シート１，１……
を、接着剤含浸紙を挾んだ状態で、再び積層して
熱圧するので、残つた水分を充分に揮散させるこ
とができる。これによつて目的の化粧合板中には
含有水分量が極めて少なくなるので、たとえ高温
下で長時間放置された場合にも、水分や温度変化
等に起因する寸法変化や形状変化が生じず、品質
低下を招かない。したがつて温度変化の激しい車
輌内装用途として好適である。また各シート１，
１……の接着には、接着剤含浸紙２，２……を用
いるので、液状接着剤による接着に比べ、水分の
混入を避けることができるうえに、補強効果もあ
り、層間剥離を生じない利点もある。またこの方
法によれば、成形加工性が良好で、曲面成形も容
易に行うことができる。また曲面成形後の形状安
定性も優れており、温度変化や外力に対しても形
状を安定に維持することができる。 According to this method, in the first step, a relatively small number of sheets of thermosetting resin-impregnated paper 1a, 1a... are laminated and hot-pressed, so that the moisture in the resin is easily volatilized at this stage. . Also, in the second step,
Thermosetting resin-impregnated paper laminated cured sheet 1, 1...
are laminated again with the adhesive-impregnated paper sandwiched between them and hot-pressed, so that the remaining moisture can be sufficiently volatilized. As a result, the moisture content in the target decorative plywood is extremely low, so even if it is left for a long time at high temperatures, there will be no dimensional or shape changes due to moisture or temperature changes. Does not cause quality deterioration. Therefore, it is suitable for use in vehicle interiors where temperature changes are severe. Also, each sheet 1,
Adhesive-impregnated paper 2, 2... is used to bond 1..., so compared to bonding with liquid adhesive, it is possible to avoid moisture contamination, and it also has a reinforcing effect and does not cause delamination. There are also advantages. Moreover, according to this method, moldability is good and curved surface molding can be easily performed. It also has excellent shape stability after curved surface molding, and can maintain its shape stably even against temperature changes and external forces.
［実施例］
フエノール樹脂液を含浸したクラフト紙を３枚
積層し、温度150℃、圧力8MPaで熱圧により硬
化、接着させてなる熱硬化性樹脂含浸紙積層硬化
シートを３層用意した。これらの各シートと、エ
ポキシ樹脂含浸ビニロン紙とを交互に重ね合わ
せ、この重ね合わせ物の片面にウオールナツト化
粧単板を配した状態で、曲率半径200mmの半円筒
状の成形型を用いて、温度100℃、圧力1MPaで
15分間熱圧して、硬化、接着し、半円筒状の積層
物を得た。この積層物の化粧単板の表面に不飽和
ポリエステル樹脂塗料を塗布して厚さ0.5mmの透
明塗膜を形成し、目的の化粧合板を得た。[Example] Three layers of thermosetting resin-impregnated paper laminated cured sheets were prepared by laminating three sheets of kraft paper impregnated with a phenol resin liquid and curing and bonding them by heat and pressure at a temperature of 150° C. and a pressure of 8 MPa. Each of these sheets and epoxy resin-impregnated vinylon paper were layered alternately, and a walnut decorative veneer was placed on one side of the layered material, using a semi-cylindrical mold with a radius of curvature of 200 mm. At a temperature of 100℃ and a pressure of 1MPa
The mixture was cured and bonded by hot pressing for 15 minutes to obtain a semi-cylindrical laminate. An unsaturated polyester resin paint was applied to the surface of the decorative veneer of this laminate to form a transparent coating film with a thickness of 0.5 mm to obtain the desired decorative plywood.
〔試験例〕
この化粧合板を温度50℃、相対湿度95％の環境
下に400時間放置し、その変形状態を目視により
評価したところ、寸法変化や形状変化は何ら認め
られなかつた。[Test Example] This decorative plywood was left in an environment with a temperature of 50°C and a relative humidity of 95% for 400 hours, and its deformation state was visually evaluated, and no dimensional or shape changes were observed.
また、化粧合板を温度80℃まで昇温し80℃の環
境下に８時間放置した後、再び−30℃に降温し−
30℃で16時間放置するという温度サイクルを10回
繰り返し行い、その寸法変化を測定したところ、
変形量は、１〜２mm／200mmと極めて小さな値を
示した。この結果より、実施例の化粧合板の温度
変化に対する寸法安定性が優れていることが明ら
かとなつた。 In addition, after heating the decorative plywood to 80℃ and leaving it in an 80℃ environment for 8 hours, the temperature was lowered to -30℃ again.
When we repeated the temperature cycle of leaving it at 30℃ for 16 hours 10 times and measured the dimensional changes, we found that
The amount of deformation showed an extremely small value of 1 to 2 mm/200 mm. The results revealed that the decorative plywood of the example had excellent dimensional stability against temperature changes.
［発明の効果］
以上説明したように、本発明の車輌内装用化粧
合板の製造法は、複数枚の熱硬化性樹脂含浸紙を
積層し、熱圧して熱硬化性樹脂含浸紙積層硬化シ
ートを作り、次いで複数の熱硬化性樹脂含浸紙積
層硬化シートと、接着剤含浸紙とを交互に重ね合
わせ、この重ね合わせ物の表面に化粧単板を配
し、熱圧して硬化、接着するので、上記熱圧過程
において、樹脂中の水分が揮散され易く、得られ
た化粧合板中に含有される水分量が極めて少なく
なるので、温度変化等の環境条件に広い変動に対
しても、寸法安定性や形状安定性を維持すること
ができ、品質低下を招かない利点がある。したが
つて、温度変化の激しい車輌内装用化粧合板とし
て好適に使用することができる。また成形加工性
も良好で、上記熱圧と同時に曲面成形等の成形加
工も容易に行うことができる。また成形加工後の
化粧合板にあつても形状安定性が良好で、温度変
化や外力によつても安定に形状を維持できる。[Effects of the Invention] As explained above, the method for manufacturing decorative plywood for vehicle interiors of the present invention involves laminating a plurality of sheets of thermosetting resin-impregnated paper and hot pressing to form a thermosetting resin-impregnated paper laminated cured sheet. Then, a plurality of thermosetting resin-impregnated paper laminated cured sheets and adhesive-impregnated paper are layered alternately, a decorative veneer is placed on the surface of this layered material, and it is cured and bonded by heat pressing. In the heat-pressing process mentioned above, the moisture in the resin is easily volatilized, and the amount of moisture contained in the resulting decorative plywood is extremely small, so it maintains dimensional stability even under wide fluctuations in environmental conditions such as temperature changes. It has the advantage of being able to maintain shape stability and not causing quality deterioration. Therefore, it can be suitably used as decorative plywood for vehicle interiors, which are subject to severe temperature changes. Further, the molding processability is good, and molding processes such as curved surface molding can be easily performed simultaneously with the above-mentioned hot pressing. Furthermore, even after forming, the decorative plywood has good shape stability and can maintain its shape stably even under temperature changes and external forces.
第１図は、本発明の車輌内装用化粧合板の製造
法の一実施例を示す概略断面図であり、第２図
は、従来の製造法により得られた車輌内装用化粧
合板の一例を示す概略断面図である。
１……熱硬化性樹脂含浸紙積層硬化シート、１
ａ……熱硬化性樹脂含浸紙、２……接着剤含浸
紙、３……化粧単板。
FIG. 1 is a schematic cross-sectional view showing an embodiment of the method for producing decorative plywood for vehicle interiors according to the present invention, and FIG. 2 shows an example of decorative plywood for vehicle interiors obtained by a conventional manufacturing method. It is a schematic sectional view. 1...Thermosetting resin impregnated paper laminated cured sheet, 1
a...Thermosetting resin impregnated paper, 2...Adhesive impregnated paper, 3...Decorative veneer.
Claims (1)
して熱硬化性樹脂含浸紙積層硬化シートを作り、 次いで、複数の熱硬化性樹脂含浸紙積層硬化シ
ートと、接着剤含浸紙とを交互に重ね合わせ、こ
の重ね合わせ物の表面に化粧単板を配し、熱圧し
て硬化、接着することを特徴とする車輌内装用化
粧合板の製造法。[Claims] 1. A plurality of sheets of thermosetting resin-impregnated paper are laminated and hot-pressed to produce a thermosetting resin-impregnated paper laminated cured sheet, and then a plurality of thermosetting resin-impregnated paper laminated cured sheets, A method for producing decorative plywood for vehicle interiors, which comprises alternately layering sheets of paper impregnated with an adhesive, placing a decorative veneer on the surface of the layered material, and hardening and adhering it by heat pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1098453A JPH02276632A (en) | 1989-04-18 | 1989-04-18 | Manufacture of decorative plywood for interior finish of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1098453A JPH02276632A (en) | 1989-04-18 | 1989-04-18 | Manufacture of decorative plywood for interior finish of car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02276632A JPH02276632A (en) | 1990-11-13 |
| JPH0529549B2 true JPH0529549B2 (en) | 1993-04-30 |
Family
ID=14220133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1098453A Granted JPH02276632A (en) | 1989-04-18 | 1989-04-18 | Manufacture of decorative plywood for interior finish of car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02276632A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2712910A1 (en) * | 1993-09-20 | 1995-06-02 | Ober Ste Ind | Support for floors or floor coverings comprising layers of paper |
-
1989
- 1989-04-18 JP JP1098453A patent/JPH02276632A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02276632A (en) | 1990-11-13 |
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