JPH07186285A - Production of polyurethane foam sheet - Google Patents

Production of polyurethane foam sheet

Info

Publication number
JPH07186285A
JPH07186285A JP5332081A JP33208193A JPH07186285A JP H07186285 A JPH07186285 A JP H07186285A JP 5332081 A JP5332081 A JP 5332081A JP 33208193 A JP33208193 A JP 33208193A JP H07186285 A JPH07186285 A JP H07186285A
Authority
JP
Japan
Prior art keywords
polyurethane foam
foam sheet
sheet
foaming
polyol
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
Application number
JP5332081A
Other languages
Japanese (ja)
Inventor
Hitoshi Koshizuka
仁志 腰塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOYO KUORITEI ONE KK
Original Assignee
TOYO KUORITEI ONE KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TOYO KUORITEI ONE KK filed Critical TOYO KUORITEI ONE KK
Priority to JP5332081A priority Critical patent/JPH07186285A/en
Publication of JPH07186285A publication Critical patent/JPH07186285A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE:To produce a polyurethane foam sheet having waterproofness by the reduced number of processes by foaming and crosslinking a foamable raw soln. prepared by adding wax or metal soap and an amine catalyst to a polyurethane prepolymer obtained by adding org. isocyanate to polyol containing a specific ratio of difunctional polyether polyol. CONSTITUTION:1.5 pts.wt. of either one of wax and metal soap and an amine catalyst, a tin catalyst, silicone oil and, if necessary, pigment and an oxidation inhibitor are added to and mixed with 100 pts.wt. of a polyurethane prepolymer prepared by adding org. isocyanate to polyol containing 30 wt.% of difunctional polyether polyol to mix the same with polyol under heating and adjusted to 5-13% in free isocyanate content to prepare a foamable raw soln. 16. This soln. is emitted to a releasable base material 15 by the emission nozzle 17 above an endless belt 11 to be formed into a sheet by a doctor knife 18 and this sheet is further crosslinked in a heating oven 13. Next, the sheet is lightly compressed by compression rolls 19a, 19b and cured in a heating oven 14.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明はポリウレタンフォーム
シートの製造方法に関し、特に粘着テープ用基材,屋
内,屋外,車両用スピーカーエッヂ素材,緩衝材,工業
用材料に有用なポリウレタンフォームシートを製造する
方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polyurethane foam sheet, and particularly to produce a polyurethane foam sheet useful as a base material for adhesive tapes, indoor / outdoor, speaker edge materials for vehicles, cushioning materials, and industrial materials. Regarding the method.

【0002】[0002]

【従来の技術】周知の如く、ポリウレタンフォームシー
トは、通常離型基材上に連続して発泡原液を吐出してド
クターナイフなどにより所定の厚さにシーティングして
発泡,架橋して所定の厚さのシートを得るか、又はスラ
ブより所定の厚さにカットして得られる。これらの用途
の一部は、粘着テープ用基材,スピーカーエッヂ用基
材,緩衝材等に使用されている。最近、これらの製品が
屋外で使用されたり、また多湿の環境で使用されること
が多くなり、防水性を付与する必要となってきた。
2. Description of the Related Art As is well known, a polyurethane foam sheet is usually formed by continuously discharging a foaming undiluted solution onto a release base material and then sheeting it with a doctor knife to a predetermined thickness to foam and crosslink it to a predetermined thickness. The sheet is obtained by cutting the slab into a predetermined thickness. Some of these applications are used as adhesive tape base materials, speaker edge base materials, cushioning materials, and the like. Recently, these products are often used outdoors or in humid environments, and it has become necessary to impart waterproofness.

【0003】[0003]

【発明が解決しようとする課題】この場合、上記ポリウ
レタンフォームシートにフッ素樹脂エマルジョン等の撥
水性のある原料にて表面処理を行う等により防水性をも
たせるが、二次加工なので工数とコストがかかるという
問題があった。
In this case, the polyurethane foam sheet is made waterproof by surface-treating it with a water-repellent raw material such as a fluororesin emulsion, but the secondary processing requires man-hours and costs. There was a problem.

【0004】この発明はこうした事情を考慮してなされ
たもので、一般物性が変わることなく防水性を有し、ま
た工数,コストが余分にかかることがないポリウレタン
フォームシートの製造方法を提供することを目的とす
る。
The present invention has been made in view of these circumstances, and provides a method for producing a polyurethane foam sheet which has waterproof properties without changing general physical properties and does not require extra man-hours and costs. With the goal.

【0005】[0005]

【課題を解決するための手段】この発明は、ポリオール
の30重量%を2官能のポリエーテルポリオールとしこ
れに有機イソシアネートを添加,加熱,混合して遊離イ
ソシアネート率を5〜13%に調整したポリウレタンン
プレポリマー100重量部に対し、ワックス又は金属石
鹸の少なくともいずれか一方を1.5重量部とアミン触
媒,錫触媒,シリコーン油、あるいはこれらに顔料,酸
化防止剤を添加,混合した発泡原液を離型基材上に吐出
した後、一定厚さにシーティングし、更に発泡,架橋さ
せることを特徴とするポリウレタンフォームシートの製
造方法である。
According to the present invention, 30% by weight of a polyol is a bifunctional polyether polyol, and an organic isocyanate is added thereto, heated and mixed to adjust the free isocyanate rate to 5 to 13%. 1.5 parts by weight of at least one of wax and metal soap and amine catalyst, tin catalyst, silicone oil, or a foaming stock solution obtained by adding and mixing pigments and antioxidants to 100 parts by weight of the prepolymer. It is a method for producing a polyurethane foam sheet, which comprises discharging on a release base material, followed by sheeting to a constant thickness, and further foaming and crosslinking.

【0006】この発明において、2官能のポリエーテル
ポリオールは、全体のポリオール分のうち40%以上好
ましくは60%以上が良い。ここで、40%未満のとき
は効果が少ない。また、分子構造内に疎水性基をもつも
のが好ましい。
In the present invention, the content of the bifunctional polyether polyol is 40% or more, preferably 60% or more of the total polyol content. Here, if it is less than 40%, the effect is small. Further, those having a hydrophobic group in the molecular structure are preferable.

【0007】この発明において、金属石鹸としては、例
えばステアリン酸アエン,ステアリン酸カルシウムが挙
げられる。ここで、金属石鹸の添加量は、ポリウレタン
プレポリマー100重量部に対して1.5重量部以上、
好ましくは2.0〜5.0重量部が良い。また、ワック
スの添加量も金属石鹸と同等であり、更に金属石鹸とワ
ックスの両者の混合もこの添加量が良い。
In the present invention, examples of the metallic soap include aene stearate and calcium stearate. Here, the addition amount of the metal soap is 1.5 parts by weight or more based on 100 parts by weight of the polyurethane prepolymer,
It is preferably 2.0 to 5.0 parts by weight. The amount of wax added is the same as that of metal soap, and the amount of wax added is also good.

【0008】この発明において、遊離イソシアネート率
を5〜13%としたのは、5%未満では発泡に支障があ
り、13%を越えるとガスが多くですぎて効果が低下す
るからである。
In the present invention, the free isocyanate rate is set to 5 to 13% because if it is less than 5%, the foaming is hindered, and if it exceeds 13%, the amount of gas is too much and the effect is lowered.

【0009】[0009]

【作用】この発明においては、2官能のポリエーテルポ
リオールを使用することにより発泡時に発生するガスの
逃げ道である表面の小孔を極力抑えると共に、金属石鹸
又はワックス又はその両者の混合を加えて表面のぬれ性
を小さくして防水性をもたせることができる。
In the present invention, the use of a bifunctional polyether polyol minimizes the small holes on the surface, which are the escape paths for the gas generated during foaming, and at the same time adds a metallic soap or wax or a mixture of both to the surface. The wettability of the can be reduced to provide waterproofness.

【0010】[0010]

【実施例】以下、この発明の一実施例について説明す
る。まず、この発明に用いられるポリウレタンフォーム
シートを製造する装置について図1(A),(B)を参
照して説明する。ここで、図1(A)は前記装置の全体
図、図1(B)は図1(A)の要部の拡大図である。図
中の符番11,12は、一方向に配置されたエンドレスベル
トである。一方のエンドレスベルト11の所定の位置には
加熱オーブン(又は水蒸気槽)13が配置され、他方のエ
ンドレスベルト12の所定の位置には加熱オーブン14が配
置されている。また、前記エンドレスベルト11上には一
端側から離型紙15が送られ、多端側で巻き取られるよう
になっている。前記エンドレスベルト11の一端側の上方
には、発泡原液16を前記離型紙15上に流す吐出ノズル1
7、及び前記発泡原液16を掻き取るドクターナイフ18が
配置されている。前記エンドレスベルト11,12間には、
加熱したポリウレタンフォームシートを軽圧縮する圧縮
ロール19a,19bが配置されている。なお、図中の符番
20は、前記加熱オーブン14を経てた後、巻き取られるポ
リウレタンフォームシートである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. First, an apparatus for producing a polyurethane foam sheet used in the present invention will be described with reference to FIGS. 1 (A) and 1 (B). Here, FIG. 1 (A) is an overall view of the apparatus, and FIG. 1 (B) is an enlarged view of a main part of FIG. 1 (A). Reference numerals 11 and 12 in the figure are endless belts arranged in one direction. A heating oven (or a steam tank) 13 is arranged at a predetermined position of one endless belt 11, and a heating oven 14 is arranged at a predetermined position of the other endless belt 12. Further, the release paper 15 is fed onto the endless belt 11 from one end side and is wound on the multi-end side. Above the one end side of the endless belt 11, the discharge nozzle 1 for flowing the foaming stock solution 16 onto the release paper 15 is provided.
7 and a doctor knife 18 for scraping off the foaming stock solution 16 are arranged. Between the endless belts 11 and 12,
The compression rolls 19a and 19b which lightly compress the heated polyurethane foam sheet are arranged. Note that the reference numbers in the figure
Reference numeral 20 denotes a polyurethane foam sheet that is wound up after passing through the heating oven 14.

【0011】次に、上記装置を用いてポリウレタンフォ
ームシートを製造する方法につて説明する。 (実施例1) A.ウレタンプレポリマーの製造: 商品名:PTG−1100(2官能,分子量1000のポリエーテルポリオ ール、保土ヶ谷化学社製) …100重量部 トリレンジイソシアネート … 43重量部 上記の原料を混合し、80℃にて150分間加熱撹拌し
てNCO%:8.2%のウレタンプレポリマーを得た。
Next, a method for producing a polyurethane foam sheet using the above apparatus will be described. (Example 1) A. Production of urethane prepolymer: Product name: PTG-1100 (bifunctional, polyetherpolyol having a molecular weight of 1000, manufactured by Hodogaya Chemical Co., Ltd.) ... 100 parts by weight Tolylene diisocyanate ... 43 parts by weight The above raw materials are mixed and mixed at 80 ° C. The mixture was heated and stirred for 150 minutes to obtain a urethane prepolymer having an NCO% of 8.2%.

【0012】 B.ポリウレタンフォームシートの製造: ウレタンプレポリマー …100重量部 シリコーンオイル …2.0重量部 トリエチレンジアミン …0.3重量部 オクチルサン第一錫 …0.8重量部 顔料(黒) …1.5重量部 カルナウバワックスNo.1(野田ワックス社製) …3.0重量部 上記原料を混合した後、離型紙上に吐出し、ドクターナ
イフにて厚0.5mm,重さ260g/m2 になる様にシ
ーテイングした。この後、70℃の加熱オーブン13に導
入し発泡させた後、90℃に加熱したプレスロールにて
軽圧縮し、続いて70℃の加熱オーブン14に導入しキュ
アーを完了させ巻き取り製品とした。得られたシートは
厚さ1.21mm,引張強さ1.7Kg/cm2 ,伸び28
0%の表面平滑なシートであり、上面に10mmの水を張
った結果、24時間漏水はなかった。
B. Production of polyurethane foam sheet: Urethane prepolymer: 100 parts by weight Silicone oil: 2.0 parts by weight Triethylenediamine: 0.3 parts by weight Octyl sun stannous tin: 0.8 parts by weight Pigment (black): 1.5 parts by weight Carnauba wax No. 1 (manufactured by Noda Wax Co., Ltd.) 3.0 parts by weight After mixing the above raw materials, they were discharged onto a release paper and sheeted with a doctor knife to a thickness of 0.5 mm and a weight of 260 g / m 2 . Then, after introducing into a heating oven 13 at 70 ° C. for foaming, it is lightly compressed by a press roll heated to 90 ° C., and subsequently introduced into a heating oven 14 at 70 ° C. to complete curing and be a rolled product. . The obtained sheet has a thickness of 1.21 mm, a tensile strength of 1.7 Kg / cm 2 , and an elongation of 28.
The sheet was a 0% smooth surface, and as a result of pouring 10 mm of water on the upper surface, there was no water leakage for 24 hours.

【0013】(実施例2)実施例1の配合原料のなかで
カルナウバワックスの代わりにステアリン酸アエンを
3.0重量部使用し、他は実施例1と同一としてポリウ
レタンフォームシートを製造した。その結果、厚さ1.
23mm、引張強さ1.7Kg/cm2 ,伸び260%の表
面平滑なシートが得られた。
Example 2 A polyurethane foam sheet was produced in the same manner as in Example 1 except that 3.0 parts by weight of aene stearate was used instead of carnauba wax in the compounded raw materials of Example 1. As a result, the thickness 1.
A sheet having a surface of 23 mm, a tensile strength of 1.7 Kg / cm 2 , and an elongation of 260% was obtained.

【0014】[0014]

【発明の効果】以上詳述したようにこの発明によれば、
一般物性が変わることなく防水性を有し、また工数,コ
ストが余分にかかることがないポリウレタンフォームシ
ートの製造方法を提供できる。
As described above in detail, according to the present invention,
It is possible to provide a method for producing a polyurethane foam sheet, which has water resistance without changing general physical properties and does not require extra man-hours and costs.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の一実施例に係るポリウレタンフォー
ムシートを製造するための装置の説明図、図1(A)は
全体図、図1(B)は図1(A)の要部の拡大図。
FIG. 1 is an explanatory view of an apparatus for manufacturing a polyurethane foam sheet according to an embodiment of the present invention, FIG. 1 (A) is an overall view, and FIG. 1 (B) is an enlarged main part of FIG. 1 (A). Fig.

【符号の説明】[Explanation of symbols]

11,12…エンドレスベルト、13,14…加熱オーブン、
15…離型紙、16…発泡原液、 17…吐出ノズ
ル、 18…ドクターナイフ、19a,19b…圧縮ロ
ール、 20…ポリウレタンフォームシート。
11,12 ... Endless belt, 13,14 ... Heating oven,
15 ... Release paper, 16 ... Foaming stock solution, 17 ... Discharge nozzle, 18 ... Doctor knife, 19a, 19b ... Compression roll, 20 ... Polyurethane foam sheet.

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 B29K 75:00 105:24 C08L 75:04 Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display area B29K 75:00 105: 24 C08L 75:04

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ポリオールの30重量%を2官能のポリ
エーテルポリオールとしこれに有機イソシアネートを添
加,加熱,混合して遊離イソシアネート率を5〜13%
に調整したポリウレタンンプレポリマー100重量部に
対し、ワックス又は金属石鹸の少なくともいずれか一方
を1.5重量部とアミン触媒,錫触媒,シリコーン油、
あるいはこれらに顔料,酸化防止剤を添加,混合した発
泡原液を離型基材上に吐出した後、一定厚さにシーティ
ングし、更に発泡,架橋させることを特徴とするポリウ
レタンフォームシートの製造方法。
1. A difunctional polyether polyol is obtained by using 30% by weight of a polyol, and an organic isocyanate is added thereto, heated and mixed to obtain a free isocyanate ratio of 5 to 13%.
1.5 parts by weight of at least one of wax and metal soap, and 100 parts by weight of the polyurethane prepolymer prepared as above, amine catalyst, tin catalyst, silicone oil,
Alternatively, a method for producing a polyurethane foam sheet, characterized in that a foaming undiluted solution obtained by adding and mixing a pigment and an antioxidant to these is discharged onto a release substrate, followed by sheeting to a predetermined thickness, and further foaming and crosslinking.
【請求項2】 発泡,架橋を加熱のみあるいは水蒸気雰
囲気中で行なうことを特徴とする請求項1記載のポリウ
レタンフォームシートの製造方法。
2. The method for producing a polyurethane foam sheet according to claim 1, wherein the foaming and cross-linking are performed only by heating or in a steam atmosphere.
【請求項3】 発泡完了後まだ架橋が終了していない時
点で表面を圧縮して表面を平滑にすることを特徴とする
請求項1記載のポリウレタンフォームシートの製造方
法。
3. The method for producing a polyurethane foam sheet according to claim 1, wherein the surface is compressed to make the surface smooth at the time when the cross-linking is not yet completed after the foaming is completed.
JP5332081A 1993-12-27 1993-12-27 Production of polyurethane foam sheet Pending JPH07186285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5332081A JPH07186285A (en) 1993-12-27 1993-12-27 Production of polyurethane foam sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5332081A JPH07186285A (en) 1993-12-27 1993-12-27 Production of polyurethane foam sheet

Publications (1)

Publication Number Publication Date
JPH07186285A true JPH07186285A (en) 1995-07-25

Family

ID=18250940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5332081A Pending JPH07186285A (en) 1993-12-27 1993-12-27 Production of polyurethane foam sheet

Country Status (1)

Country Link
JP (1) JPH07186285A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7119218B2 (en) 2003-03-31 2006-10-10 Nof Corporation Low melting point tin salt of carboxylic acid and method for producing the same
CN108102136A (en) * 2017-12-21 2018-06-01 江苏华艺泡棉科技有限公司 Fire-proof sponge and preparation method thereof and the sponge impregnating liquid used

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7119218B2 (en) 2003-03-31 2006-10-10 Nof Corporation Low melting point tin salt of carboxylic acid and method for producing the same
CN108102136A (en) * 2017-12-21 2018-06-01 江苏华艺泡棉科技有限公司 Fire-proof sponge and preparation method thereof and the sponge impregnating liquid used

Similar Documents

Publication Publication Date Title
EP0098752B1 (en) Process for producing aqueous dispersions of polyurethanes
DE69623936T2 (en) Floor covering, or pre-painted wallpaper, which are coated with radiation-curable coating materials
DE10132141B4 (en) Polyurethane foam composition and process for its preparation
US3061885A (en) Treatment of polyurethane foams
EP0361418A2 (en) Shape memory polymer foam
DE1620777A1 (en) Process for the production of compositions containing cork and optionally foam particles
KR960702852A (en) PROCESS FOR PRODUCING RAPIDLY COLD-CURABLE POLYURETHANE COATING WATERPROOFING MATERIAL
GB1592926A (en) Process for making coated covering material
US3595732A (en) Process and microporous product
US4363686A (en) Process for the production of imitation suedes by the reversal process
DE3005718A1 (en) POLY-1,2-PROPYLENE ETHERURETHANE AND A METHOD FOR THE PRODUCTION THEREOF
US3752695A (en) Coated polyurethane foam having an integral skin
GB1579412A (en) Surface treatment of polyvinyl fluoride
US4102719A (en) Process for producing artificial leather
JPH07186285A (en) Production of polyurethane foam sheet
NO832545L (en) POLYMER COMPOSITION
JP3094126B2 (en) Foam polyurethane elastomer sheet and method for producing the same
JPS55160018A (en) Modified polyurethane liquid polymer composition
JPS5811518A (en) Preparation of polymeric polyol
DE4117649C1 (en)
DE4301584A1 (en)
JP2001002752A (en) Flame retardant polyurethane foamed sheet and synthetic leather using the same
JPH0680809A (en) Production of polyurethane foam sheet
JP2006045250A (en) Base film for marking sheet
JPH0880535A (en) Manufacture of polyurethane composite sheet

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040202

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040302

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20040629