JPH03180318A - Polyvinyl chloride-based resin sheet for vacuum forming - Google Patents
Polyvinyl chloride-based resin sheet for vacuum formingInfo
- Publication number
- JPH03180318A JPH03180318A JP31959289A JP31959289A JPH03180318A JP H03180318 A JPH03180318 A JP H03180318A JP 31959289 A JP31959289 A JP 31959289A JP 31959289 A JP31959289 A JP 31959289A JP H03180318 A JPH03180318 A JP H03180318A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- layer
- polyvinyl chloride
- based 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 89
- 239000011347 resin Substances 0.000 title claims abstract description 89
- 238000007666 vacuum forming Methods 0.000 title claims abstract description 28
- 229920000915 polyvinyl chloride Polymers 0.000 title abstract description 15
- 239000004800 polyvinyl chloride Substances 0.000 title abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 50
- 229920001944 Plastisol Polymers 0.000 claims abstract description 33
- 239000004999 plastisol Substances 0.000 claims abstract description 33
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 23
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 69
- 239000006260 foam Substances 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 abstract description 3
- 239000002356 single layer Substances 0.000 abstract description 2
- 239000004014 plasticizer Substances 0.000 description 10
- -1 ethylene, propylene Chemical group 0.000 description 8
- 239000003381 stabilizer Substances 0.000 description 7
- IRIAEXORFWYRCZ-UHFFFAOYSA-N Butylbenzyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCC1=CC=CC=C1 IRIAEXORFWYRCZ-UHFFFAOYSA-N 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000003981 vehicle Substances 0.000 description 3
- 239000004135 Bone phosphate Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 2
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 2
- XWVQUJDBOICHGH-UHFFFAOYSA-N dioctyl nonanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCC(=O)OCCCCCCCC XWVQUJDBOICHGH-UHFFFAOYSA-N 0.000 description 2
- QQVHEQUEHCEAKS-UHFFFAOYSA-N diundecyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCCC QQVHEQUEHCEAKS-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- GGSRTHRSSCWGGK-UHFFFAOYSA-L 2,2-dibutyl-5-hydroxy-1,3,2-dioxastannepane-4,7-dione Chemical compound CCCC[Sn]1(CCCC)OC(=O)CC(O)C(=O)O1 GGSRTHRSSCWGGK-UHFFFAOYSA-L 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004803 Di-2ethylhexylphthalate Substances 0.000 description 1
- ZVFDTKUVRCTHQE-UHFFFAOYSA-N Diisodecyl phthalate Chemical compound CC(C)CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC(C)C ZVFDTKUVRCTHQE-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229940024545 aluminum hydroxide Drugs 0.000 description 1
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- QEZIKGQWAWNWIR-UHFFFAOYSA-N antimony(3+) antimony(5+) oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[Sb+3].[Sb+5] QEZIKGQWAWNWIR-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- GWOWVOYJLHSRJJ-UHFFFAOYSA-L cadmium stearate Chemical compound [Cd+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O GWOWVOYJLHSRJJ-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229960003563 calcium carbonate Drugs 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 description 1
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229940031958 magnesium carbonate hydroxide Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003456 sulfonamides Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229940033134 talc Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
〔産業上の利用分野］
本発明は真空成形用の塩化ビニル系樹脂シートに関し、
特に真空成形後のシートの収縮の少ない真空成形用塩化
ビニル系樹脂シートに係るものである。
〔従来技術〕
従来、真空成形用ポリ塩化ビニル系樹脂シートとして、
成形品のソフト化から塩化ビニル系樹脂プラスチゾルを
使用したシートが使用されてきた。
塩化ビニル系樹脂プラスチゾルを使用して絞模様を有す
るシートを形成するには、凹凸模様を有する離型紙に塩
化ビニル系樹脂プラスチゾル組成物威物を塗布しこれを
ゲル化して離型紙から剥離するので、得られる塩化ビニ
ル系樹脂シートには離型紙の凹凸模様が明確に転写され
、絞の凹凸が微細なものまで含めて充分に表現でき、自
動車等の車輌用内装材用としては好適なものである。
〔発明が解決しようとする問題点〕
塩化ヒビニル系樹脂プラスチゾルら形成したシートは上
述したように、真空成形してもソフト感があり、自動車
等の内装材に好適ではあるが、従来使用されていた真空
成形用の塩化ビニル系樹脂プラスチゾルは平均重合度が
１４００以上で、特に平均重合度２０００程度のものが
多く使用されてきたが、これら高重合度塩化ビニル系樹
脂のプラスチゾルから形成されたシートは、真空成形後
のシートの収縮が大きいという問題点を有しており、特
に自動車等の内装品として真空成形品を別の型にセット
して合成樹脂を注入成形する場合などには、真空成形品
の２次収縮により、注入型へのセットが困難になるとい
う大きな問題点があった。
本発明は、このような従来技術を背景になされたもので
、真空成形後の２次収縮が極めて少ない真空成形用塩化
ビニル系樹脂シートを提供するものである。
〔課題を解決するための手段〕
すなわち本発明は、
（１）平均重合度１４００未満の塩化ビニル系樹脂のプ
ラスチゾル＆ＩＩ或物からなる塩化ビニル系樹脂層を少
なくとも１層有する真空成形用塩化ビニル系樹脂シート
。
（２）少なくとも表皮層が、平均重合度１４００未満の
塩化ビニル系樹脂のプラスチゾル＆Ｆｌ戒物からなる塩
化ビニル系樹脂層からなり、皮膜層が塩化ビニル系樹脂
プラスチゾル組成物からなる１層以上の塩化ビニル系樹
脂層である真空成形用塩化ビニル系樹脂シート。
（３）皮膜層が非発泡層である請求項２記載の真空成形
用塩化ビニル系樹脂シート。
（４）皮膜層が発泡層である請求項２記載の真空成形用
塩化ビニル系樹脂シート。
（５）表皮層の表面に平均重合度１４００以上の塩化ビ
ニル系樹脂プラスチゾル＆１ＩｒＩｉ、物からなる表面
層が形成された請求項２〜４のいづれかに記載の真空酸
形用塩化ビニル系樹脂シート。
を要旨とするものである。
本発明で使用する塩化ビニル系樹脂としては、塩化ビニ
ル単独、または塩化ビニルと他のビニルモノマー、例え
ば酢酸ビニル、エチレン、プロピレン、マレイン酸エス
テル、メタクリル酸メチル、メタクリル酸エステル、ア
クリル酸エステル、高級ビニルエーテルなどとをエマル
ジョン重合またはマイクロサスペンション重合で得られ
る重合体または共重合体が挙げられるが、これらは単独
で使用してもよいし、複数を併用して使用してもよい。
ただし、使用する塩化ビニル系樹脂の平均重合度は１４
００以下のものとしなければならない。
使用する塩化ビニル系樹脂の平均重合度は好ましくは８
００−１２００である。平均重合度が８００より小さく
なると、真空成形時の加熱によりシートがドローダウン
する（噴量がある。
もちろん、平均重合度１４００以上の塩化ビニル系樹脂
を併用することもでき、併用したものの平均重合度が１
４００以下であれば良い。
塩化ビニル系樹脂からプラスチゾルを形成するのに使用
できる液状可塑剤としては、例えばフタル酸ジ〜２−エ
チルへキシルエステル（ＤＯＰ）、フタル酸ジイソノニ
ルエステル（ＤＩＮＰ）、フタル酸ブチルベンジルエス
テル（ＢＢＰ）、フタル酸ジイソデシルエステル（ＤＩ
ＤＰ’）、フタル酸ジウンデシルエステル（ＤＵＰ）な
どに代表される一般のフタル酸エステル系可塑剤、アジ
ピン酸ジオクチルエステル（ＤＯＡ） 、セバシン酸ジ
オクチルエステル（ＤＯ３）、アゼライン酸ジオクチル
エステル（ＤＯＺ）に代表される一般の脂肪酸エステル
系可塑剤、トリメリット酸トリオクチルエステル（ＴＯ
ＴＭ）に代表されるトリメリット酸エステル系可塑剤、
トリクレジルフォスフェート（ＴＣＰ）、トリキシリル
フォスフェート（ＴＸＰ）などに代表されるトリアリー
ルフォスフェート系可塑剤のほか、エポキシ化大豆油な
どに代表されるエポキシ系可塑剤、ポリプロピレンアジ
ペート等に代表されるポリエステル系可塑剤などの高分
子系可塑剤、塩素化パラフィンなどの一般の可塑剤が使
用できるが、これらの可塑剤は単独で使用しても良いし
、２種以上を併用して使用してもよい。
これらの可塑剤は、目的とする種々の用途に合わせて、
塩化ビニル系樹脂に適宜量添加される。
一般に添加される量は、塩化ビニル系樹脂１００重１部
に対して３０〜１５０重量部程度であるが、本発明にお
いてはこれに限定されるものではない。
また、本発明の塩化ビニル系樹脂には、安定剤として、
例えばステアリン酸鉛、ステアリン酸バリウム、ステア
リン酸亜鉛、ステアリン酸カドミウム、ステアリン酸カ
ルシウム等の金属石鹸、ジプチル錫ジラウレート、ジブ
チル錫マレート、有機錫メルカプチド、有機錫スルホン
アミド等の錫系安定剤、三塩基性硫酸鉛、三塩基性亜燐
酸鉛、三塩基性マレイン酸鉛などが用いられ、これらの
安定剤は単独でまたは２種以上を併用して使用でき、特
に安定剤を制限するものではない。
この安定剤の添加量は、塩化ビニル系樹脂１００重量部
に対して０．５から１０重量部、好ましくは１〜５重量
部程度である。
また、この塩化ビニル系樹脂には、発泡剤を添加して発
泡シートを得ることもできる。発泡させる場合、発泡剤
として例えば塩化ビニル系樹脂の発泡剤であるアゾジカ
ルボンアミド、ジニトロソペンクテトラミン、オキシビ
スヘンゼンヒドラジドなどを用いることにより発泡させ
ることができ、また必要に応して発泡促進剤または発泡
抑制剤を添加してもよい。
さらに、本発明の真空成形用塩化ビニル系樹脂シートを
得るための塩化ビニル系樹脂プラスチゾルを機械発泡さ
せて発泡シートを得ることもできるものである。この場
合には、整泡剤としてアルキルベンゼンスルホン酸ナト
リウム、アルキルヘンゼンスルホン酸カリウム等の有機
界面活性剤やポリジメチルシロキサン、ポリメチルフェ
ニルシロキサンなどのシリコーン油を用いるのが好まし
い。整泡剤の添加量は塩化ビニル系樹脂プラスチゾル１
００重量部に対して０．１〜５重量部である。
上記以外に、必要に応して二酸化アンチモン、トリアル
コキシアルキルフォスフェートなとの難燃剤、炭酸カル
シウム、タルク、ハイドロタルサイト、炭酸マグネシウ
ム、水酸化アルミニウム等の充填剤等の他に、加工助剤
、顔料、紫外線吸収剤、帯電防止剤、老化防止剤なども
添加することができる。
本発明においては、平均重合度１４００未満の塩化ビニ
ル系樹脂のプラスチゾル組成物からなる塩化ビニル系樹
脂層を少なくとも１１１１有していればよく、単層であ
っても複層であってもよい、複層の場合、平均重合度１
４００未満の塩化ビニル系樹脂層は表面側に露出して表
皮層を形成してもよいし、裏面側に位置して皮膜層を形
成してもよい。平均重合度１４００未満の塩化ビニル系
樹脂層が表面層を形成する場合には、塩化ビニル系樹脂
のプラスチゾル組成物から得られる塩化ビニル系樹脂シ
ートの皮膜層をＩＮ以上形成した複層構造の真空成形用
ポリ塩化ビニル系樹脂シートとしてもよい、この場合皮
膜層は非発泡層であっても、発泡層であってもよい、ま
た、表皮層上に更に平均重合度１４００以上の塩化ビニ
ル系樹脂のプラスチゾル＆［ｌ放物からなる表面層を形
成してもよい。
表皮層上に更に平均重合度１４００以上の塩化ビニル系
樹脂のプラスチゾル組成物威物からなる表面層を形成し
たものは、真空成形して得られる真空成形品の表面の絞
消え、艶変化が極めて少なく、しかも２次収縮が小さい
ので好ましい。
〔作用］
本発明においては、真空底形用ポリ塩化ビニル系樹脂シ
ートが平均重合度１４００未満の塩化ビニル系樹脂を主
成分とするプラスチゾル組成物からなる塩化ビニル系樹
脂層を少なくともｌＮ有するものであるので、平均重合
度１４００以上の塩化ビニル系樹脂を主成分とするプラ
スチゾル組成物から形成された塩化ビニル系樹脂層だけ
からなるシートのように、真空成形後の２次収縮を起こ
すことがなく、また少なくとも表皮層もしくは皮膜層が
平均重合度１４００未満の塩化ビニル系樹脂を主成分と
するプラスチゾル組成物から形成されていれば、平均重
合度１４００以上の塩化ビニル系樹脂を主成分とするプ
ラスチゾル組成物威物から形成された塩化ビニル系樹脂
層が存在していても２次収縮は極めて少なく、自動車等
の車輌や、船舶等の乗物の内装に使用されるインナーパ
ネル、セイフティバッド、リント、コンソールボックス
、アシストグリップ等に好適である。
〔実施例］
以下、本発明の実施例を具体的に説明するが、本発明は
これら実施例に限定されるものではない。
実施例１
第１表に示す配合例１の塩化ビニル樹脂プラスチゾルを
ライカイ機で２０分混練後、革絞状の凹凸模様を有する
離型紙に厚み０．５ｍになるように塗布し、これを２０
０°Ｃで２分間加熱ゲル化して真空成形用ポリ塩化ビニ
ル樹脂シートを得た。
得られた真空成形用ポリ塩化ビニル樹脂シートは離型紙
に形成された凹凸模様が明確に転写されおり、皮蓋調の
良好な外観を有するものであった。
この真空成形用ポリ塩化ビニル樹脂シートを遠赤外線ヒ
ーターで加熱し、表面温度１６０°Ｃにて真空成形した
ところ良好な真空成形品が得られた。
得られた真空成形品について収縮率（２次収縮率）を測
定した。その結果を第２表に示す。[Industrial Application Field] The present invention relates to a vinyl chloride resin sheet for vacuum forming,
In particular, the present invention relates to a vinyl chloride resin sheet for vacuum forming, which exhibits less shrinkage after vacuum forming. [Prior art] Conventionally, as a polyvinyl chloride resin sheet for vacuum forming,
Sheets using vinyl chloride resin plastisol have been used to make molded products softer. To form a sheet with a squeeze pattern using vinyl chloride resin plastisol, a vinyl chloride resin plastisol composition is applied to a release paper with an uneven pattern, and this is gelled and peeled off from the release paper. The uneven pattern of the release paper is clearly transferred to the resulting vinyl chloride resin sheet, and the unevenness of the aperture, even minute ones, can be sufficiently expressed, making it suitable for use as interior materials for vehicles such as automobiles. be. [Problems to be solved by the invention] As mentioned above, sheets formed from hibinyl chloride resin plastisol have a soft feel even when vacuum formed, and are suitable for interior materials for automobiles, etc., but they are not conventionally used. PVC resin plastisols for vacuum forming have an average degree of polymerization of 1,400 or more, and those with an average polymerization degree of about 2,000 have often been used. However, there is a problem in that the sheet shrinks significantly after vacuum forming.Especially when a vacuum formed product is set in a separate mold and injection molded with synthetic resin for interior parts of automobiles, etc., vacuum forming is difficult. There was a major problem in that secondary shrinkage of the molded product made it difficult to set it in an injection mold. The present invention was made against the background of such conventional technology, and provides a vinyl chloride resin sheet for vacuum forming that exhibits extremely little secondary shrinkage after vacuum forming. [Means for Solving the Problems] That is, the present invention provides: (1) a vinyl chloride-based resin for vacuum forming having at least one vinyl chloride-based resin layer consisting of plastisol & II of a vinyl chloride-based resin having an average degree of polymerization of less than 1400; resin sheet. (2) At least the skin layer is made of a vinyl chloride resin layer made of vinyl chloride resin plastisol and Fl material with an average degree of polymerization of less than 1400, and the skin layer is one or more layers made of a vinyl chloride resin plastisol composition. A vinyl chloride resin sheet for vacuum forming that is a vinyl resin layer. (3) The vinyl chloride resin sheet for vacuum forming according to claim 2, wherein the film layer is a non-foamed layer. (4) The vinyl chloride resin sheet for vacuum forming according to claim 2, wherein the film layer is a foam layer. (5) The vinyl chloride resin sheet for vacuum acid form according to any one of claims 2 to 4, wherein a surface layer made of vinyl chloride resin plastisol &lIrIi having an average degree of polymerization of 1400 or more is formed on the surface of the skin layer. The main points are as follows. The vinyl chloride resin used in the present invention includes vinyl chloride alone, vinyl chloride and other vinyl monomers, such as vinyl acetate, ethylene, propylene, maleic ester, methyl methacrylate, methacrylic ester, acrylic ester, high grade Examples include polymers or copolymers obtained by emulsion polymerization or microsuspension polymerization with vinyl ether, etc., and these may be used alone or in combination. However, the average degree of polymerization of the vinyl chloride resin used is 14
Must be less than 00. The average degree of polymerization of the vinyl chloride resin used is preferably 8.
It is 00-1200. If the average degree of polymerization is less than 800, the sheet will draw down due to heating during vacuum forming (there is a spray amount). Of course, a vinyl chloride resin with an average degree of polymerization of 1400 or more can also be used, degree is 1
It is sufficient if it is 400 or less. Liquid plasticizers that can be used to form plastisols from vinyl chloride resins include, for example, di-2-ethylhexyl phthalate (DOP), diisononyl phthalate (DINP), and butyl benzyl phthalate (BBP). , phthalic acid diisodecyl ester (DI
DP'), general phthalate ester plasticizers such as diundecyl phthalate (DUP), dioctyl adipate (DOA), dioctyl sebacate (DO3), and dioctyl azelate (DOZ). Trioctyl trimellitate (TO
trimellitic acid ester plasticizers represented by TM),
In addition to triaryl phosphate plasticizers, such as tricresyl phosphate (TCP) and tricylyl phosphate (TXP), epoxy plasticizers, such as epoxidized soybean oil, and polypropylene adipate, etc. Polymer plasticizers such as polyester plasticizers and general plasticizers such as chlorinated paraffin can be used, but these plasticizers may be used alone or in combination of two or more. You may. These plasticizers can be used for various purposes,
An appropriate amount is added to the vinyl chloride resin. Generally, the amount added is about 30 to 150 parts by weight per 100 parts by weight of the vinyl chloride resin, but the present invention is not limited to this. In addition, the vinyl chloride resin of the present invention includes, as a stabilizer,
For example, metal soaps such as lead stearate, barium stearate, zinc stearate, cadmium stearate, calcium stearate, tin stabilizers such as diptyltin dilaurate, dibutyltin malate, organotin mercaptide, organotin sulfonamide, tribasic Lead sulfate, tribasic lead phosphite, tribasic lead maleate, etc. are used, and these stabilizers can be used alone or in combination of two or more, and there are no particular restrictions on the stabilizers. The amount of the stabilizer added is about 0.5 to 10 parts by weight, preferably about 1 to 5 parts by weight, per 100 parts by weight of the vinyl chloride resin. A foamed sheet can also be obtained by adding a foaming agent to this vinyl chloride resin. In the case of foaming, foaming can be carried out by using a foaming agent such as azodicarbonamide, dinitrosopenctetramine, oxybishenzene hydrazide, etc., which are foaming agents for vinyl chloride resin, and foaming can be accelerated if necessary. Agents or foam suppressants may also be added. Furthermore, a foamed sheet can also be obtained by mechanically foaming the vinyl chloride resin plastisol for obtaining the vinyl chloride resin sheet for vacuum forming of the present invention. In this case, it is preferable to use an organic surfactant such as sodium alkylbenzenesulfonate or potassium alkylbenzenesulfonate, or a silicone oil such as polydimethylsiloxane or polymethylphenylsiloxane as the foam stabilizer. The amount of foam stabilizer added is 1 part vinyl chloride resin plastisol
The amount is 0.1 to 5 parts by weight per 00 parts by weight. In addition to the above, flame retardants such as antimony dioxide and trialkoxyalkyl phosphate, fillers such as calcium carbonate, talc, hydrotalcite, magnesium carbonate, and aluminum hydroxide, as well as processing aids, as necessary. , pigments, ultraviolet absorbers, antistatic agents, antiaging agents, etc. can also be added. In the present invention, it is sufficient to have at least 1111 vinyl chloride resin layers made of a plastisol composition of vinyl chloride resin having an average degree of polymerization of less than 1400, and may be a single layer or a multilayer. In case of multilayer, average degree of polymerization 1
The vinyl chloride resin layer having a molecular weight of less than 400 may be exposed on the front side to form a skin layer, or may be located on the back side to form a film layer. When a vinyl chloride resin layer with an average degree of polymerization of less than 1400 forms the surface layer, a vacuum with a multilayer structure in which a film layer of a vinyl chloride resin sheet obtained from a plastisol composition of vinyl chloride resin is formed with IN or more is used. It may also be a polyvinyl chloride resin sheet for molding. In this case, the coating layer may be a non-foamed layer or a foamed layer. Furthermore, a vinyl chloride resin with an average degree of polymerization of 1400 or more is added on the skin layer. A surface layer consisting of plastisol & [l paraboloid may be formed. If a surface layer made of a plastisol composition of vinyl chloride resin with an average degree of polymerization of 1,400 or more is formed on the skin layer, the surface of the vacuum formed product obtained by vacuum forming will be extremely susceptible to fading and gloss changes. It is preferable because it has a small amount of secondary shrinkage. [Function] In the present invention, the polyvinyl chloride resin sheet for vacuum bottom type has at least 1N of a vinyl chloride resin layer made of a plastisol composition whose main component is a vinyl chloride resin having an average degree of polymerization of less than 1400. As a result, secondary shrinkage does not occur after vacuum forming, unlike sheets made of only a vinyl chloride resin layer formed from a plastisol composition whose main component is vinyl chloride resin with an average degree of polymerization of 1400 or more. In addition, if at least the skin layer or the film layer is formed from a plastisol composition whose main component is a vinyl chloride resin with an average degree of polymerization of less than 1,400, plastisol whose main component is a vinyl chloride resin with an average degree of polymerization of 1,400 or more. Even if a vinyl chloride resin layer formed from the composition is present, secondary shrinkage is extremely small, making it suitable for inner panels, safety pads, lint, and the like used for the interior of vehicles such as automobiles and vehicles such as ships. Suitable for console boxes, assist grips, etc. [Examples] Examples of the present invention will be specifically described below, but the present invention is not limited to these Examples. Example 1 After kneading the vinyl chloride resin plastisol of Formulation Example 1 shown in Table 1 for 20 minutes in a Raikai machine, it was applied to a release paper having a leather-like uneven pattern to a thickness of 0.5 m.
The mixture was gelatinized by heating at 0°C for 2 minutes to obtain a polyvinyl chloride resin sheet for vacuum forming. The obtained polyvinyl chloride resin sheet for vacuum forming had a good appearance similar to that of a leather cover, with the uneven pattern formed on the release paper being clearly transferred. When this polyvinyl chloride resin sheet for vacuum forming was heated with a far infrared heater and vacuum formed at a surface temperature of 160°C, a good vacuum formed product was obtained. The shrinkage rate (secondary shrinkage rate) of the obtained vacuum-formed product was measured. The results are shown in Table 2.
本発明は、このように平均重合度１４００未満の塩化ビ
ニル系樹脂のプラスチゾル組成物からなる塩化ビニル系
樹脂層を少なくとも１層有するものであるので、平均重
合度１４００以上の塩化ビニル系樹脂を主成分とするプ
ラスチゾル組成物戒物から形成された塩化ビニル系樹脂
層だけからなるシートのように、真空成形後の２次収縮
を起こすことがなく、また少なくとも表皮層もしくは皮
膜層が平均重合度１４００未満の塩化ビニル系樹脂を主
成分とするプラスチゾル組成物から形成されているので
、平均重合度１４００以上の塩化ビニル系樹脂を主成分
とするプラスチゾル組成物から形成された塩化ビニル系
樹脂層が存在していても２次収縮は極めて少なく、ソフ
トで手触り感の優れた真空成形品を得ることができるも
のである。Since the present invention has at least one vinyl chloride resin layer made of a plastisol composition of vinyl chloride resin with an average degree of polymerization of less than 1,400, the present invention mainly contains vinyl chloride resin with an average degree of polymerization of 1,400 or more. Unlike a sheet consisting only of a vinyl chloride resin layer formed from the plastisol composition Kaito, it does not undergo secondary shrinkage after vacuum forming, and at least the skin layer or film layer has an average degree of polymerization of 1400. Since it is formed from a plastisol composition whose main component is a vinyl chloride resin with an average degree of polymerization of 1400 or more, there is a vinyl chloride resin layer formed from a plastisol composition whose main component is a vinyl chloride resin with an average degree of polymerization of 1400 or more. However, secondary shrinkage is extremely small, and a vacuum-formed product that is soft and has an excellent feel to the touch can be obtained.
Claims (5)
ラスチゾル組成物からなる塩化ビニル系樹脂層を少なく
とも１層有する真空成形用塩化ビニル系樹脂シート。(1) A vinyl chloride resin sheet for vacuum forming, having at least one vinyl chloride resin layer made of a plastisol composition of vinyl chloride resin having an average degree of polymerization of less than 1400.
塩化ビニル系樹脂のプラスチゾル組成物からなる塩化ビ
ニル系樹脂層からなり、皮膜層が塩化ビニル系樹脂プラ
スチゾル組成物からなる１層以上の塩化ビニル系樹脂層
である真空成形用塩化ビニル系樹脂シート。(2) At least the skin layer is made of a vinyl chloride resin layer made of a plastisol composition of vinyl chloride resin with an average degree of polymerization of less than 1400, and the skin layer is made of one or more layers of vinyl chloride resin made of a plastisol composition of vinyl chloride resin. A vinyl chloride resin sheet for vacuum forming, which is a resin layer.
用塩化ビニル系樹脂シート。(3) The vinyl chloride resin sheet for vacuum forming according to claim 2, wherein the film layer is a non-foamed layer.
塩化ビニル系樹脂シート。(4) The vinyl chloride resin sheet for vacuum forming according to claim 2, wherein the film layer is a foam layer.
ニル系樹脂プラスチゾル組成物からなる表面層が形成さ
れた請求項２〜４のいづれかに記載の真空成形用塩化ビ
ニル系樹脂シート。(5) The vinyl chloride resin sheet for vacuum forming according to any one of claims 2 to 4, wherein a surface layer made of a vinyl chloride resin plastisol composition having an average degree of polymerization of 1400 or more is formed on the surface of the skin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31959289A JPH03180318A (en) | 1989-12-09 | 1989-12-09 | Polyvinyl chloride-based resin sheet for vacuum forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31959289A JPH03180318A (en) | 1989-12-09 | 1989-12-09 | Polyvinyl chloride-based resin sheet for vacuum forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03180318A true JPH03180318A (en) | 1991-08-06 |
Family
ID=18111990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31959289A Pending JPH03180318A (en) | 1989-12-09 | 1989-12-09 | Polyvinyl chloride-based resin sheet for vacuum forming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03180318A (en) |
-
1989
- 1989-12-09 JP JP31959289A patent/JPH03180318A/en active Pending
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