JPS5924639A - Continuous molding of phenolic resin foam - Google Patents
Continuous molding of phenolic resin foamInfo
- Publication number
- JPS5924639A JPS5924639A JP57133752A JP13375282A JPS5924639A JP S5924639 A JPS5924639 A JP S5924639A JP 57133752 A JP57133752 A JP 57133752A JP 13375282 A JP13375282 A JP 13375282A JP S5924639 A JPS5924639 A JP S5924639A
- Authority
- JP
- Japan
- Prior art keywords
- support
- phenolic resin
- stock solution
- air permeable
- supports
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
- B29K2061/04—Phenoplasts
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はフェノール樹脂発泡体成形品の連続方法に関し
、発泡体に不均一なボイドが生゛じる虞のないフェノー
ル樹脂発泡体の連続成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously molding a phenolic resin foam product, and more particularly, to a method for continuously molding a phenolic resin foam product without the risk of producing non-uniform voids in the foam product.
従来〜フェノール便脂発泡体の製造に当っては、金型や
注型装置に原液を注入するとき原液にまき込まれる空気
及び発泡時に発生するガスが局部的に集合して、大きな
ボイドとして発泡体中に残っていた。このような不均一
なボイドを有するフェノール樹脂発泡体は、機械的強度
が低下したり、熱がかかったとき成形品が膨張したりす
る問題がある。本発明は均一な発泡層を有するフェノー
ル樹脂発泡体を提供することを目的とし、その要旨は通
気性のシートを重着してなる液不漏性で通気性のシート
からなる支持体ａ上に、レゾール型フェノール樹脂と発
泡剤及び酸性硬化剤とからなる発泡性樹脂の原液を流延
すると共に支持体ａと同一構成の支持体すを支持体ａと
平行に供給し、更に支持体ａ、ｂ及び発泡性樹脂の原液
を何型装置内を横切って連続移動させ該何型装置内で発
泡硬化を行い、その後支持体ａ及びｂを構成する通気性
のシートを分離してなることを特徴とするフェノール樹
脂発泡体の連続成形方法である。Conventionally, in the production of phenolic stool foam, when the stock solution is injected into a mold or casting device, the air that is mixed into the stock solution and the gas generated during foaming collect locally and form large voids. It remained in my body. Phenolic resin foams having such non-uniform voids have problems such as reduced mechanical strength and expansion of molded products when heated. The purpose of the present invention is to provide a phenolic resin foam having a uniform foam layer, and the gist thereof is to provide a phenolic resin foam having a uniform foam layer, and the gist thereof is to provide a support a made of a liquid-tight and breathable sheet, which is formed by overlaying a breathable sheet. , a stock solution of a foamable resin consisting of a resol-type phenolic resin, a blowing agent, and an acidic curing agent is cast, and a support having the same structure as support a is supplied in parallel with support a, and further supports a, b and a stock solution of foamable resin are continuously moved across an apparatus of any type, foaming and curing is performed in the apparatus of any type, and then the breathable sheets constituting supports a and b are separated. This is a continuous molding method for phenolic resin foam.
以下図面を参照にしながら本発明の詳細な説明する
支持体ａは通気性のシート２を重着してなる液不漏性で
通気性のシート１からなる。シート２は発泡硬化時に発
生するガスや水蒸気を通過させるものであれば良く、具
体的には合成繊維や天然繊維からなる織布や不織布ある
いは編布、更には厚紙等が例示できる。シート１は発泡
体成形品の摩損防止や取扱い性向上あるいは離型性向上
のために用いられるもので、液不漏性で通気性のシート
であり、たとえば目付５乃至３ｏｏｇ／’、好ましくは
１００乃至２００ ｇ／ｍ２の紙が例示できる。目付が
この範囲外のものを用いると発泡体の保護層とし・て役
に立たないか、燃焼時初期の排気温度が高くなるという
問題が生じる。The present invention will be described in detail below with reference to the drawings.The support a is comprised of a liquid-tight and air permeable sheet 1 overlaid with an air permeable sheet 2. The sheet 2 may be any material as long as it allows gas and water vapor generated during foaming and curing to pass therethrough, and specific examples thereof include woven fabrics, nonwoven fabrics, or knitted fabrics made of synthetic fibers or natural fibers, and even cardboard. The sheet 1 is used to prevent wear and tear of foam molded products, improve handling properties, and improve mold release properties, and is a liquid-tight and breathable sheet, for example, with a basis weight of 5 to 300 g/', preferably 100 g/'. An example is paper with a weight of 200 g/m2 to 200 g/m2. If a material with a basis weight outside this range is used, the problem arises that it is not useful as a protective layer for the foam, or that the temperature of the exhaust gas at the initial stage of combustion becomes high.
またこのほかに液不漏性で通気性のある高分子重合体シ
ートが例示でき、具体的にはポリエチレン−ポリプロピ
レン等のポリオレフィン、ポリエステル、ポリアミド、
ポリ弗化物等よりなるシート又はフィルム状のものであ
って多孔質のものが挙げられる。シートやフィルムに設
けられる孔の、大きさ等は、前述のように液不漏性だが
通気性のある大きさなら良く、例えば直径が１００μ以
下で１（７）２当り１個乃至画数個設けられていれば、
このような性質を付与することができる。またこれらの
シート又はフィルムには、レゾール型フェノール樹脂発
泡体生成時に発生する水蒸気の通気を良くするため親木
処理を施しておくのが望ましい。In addition, other examples include liquid-tight and breathable polymer sheets, such as polyolefins such as polyethylene-polypropylene, polyesters, polyamides,
Examples include porous sheets or films made of polyfluoride or the like. The size of the holes provided in the sheet or film should be as long as they are liquid-tight but breathable as described above, for example, the diameter is 100μ or less and one to several holes are provided per 1 (7) 2. If it was,
Such properties can be imparted. Further, it is desirable that these sheets or films be subjected to parent wood treatment in order to improve ventilation of water vapor generated during production of the resol type phenolic resin foam.
支持体ａが構成されると、レゾール型フェノール樹脂と
発泡剤及び酸性硬化剤とからなる発泡性樹脂の原液６を
混合攪拌器５で均一に混合したのち、該支持体上に供給
し流延する。この時用いる発泡剤としては炭酸アルカリ
金属塩、炭酸アルカリ土類金属塩、低級パラフィン、ア
ルコール、エーテル、塩化フッ化炭化水素等通常フェノ
ール樹脂発泡体で用いることのできる発泡剤が利用でき
る。また酸性硬化剤としては、塩酸、硫酸、リン酸、ピ
ロリン酸、ポリリン酸等の無機酸、ベンゼンスルフォン
酸、トルエンスルフォン酸、メタクレゾールスルフォン
酸、レゾルシノールスルフォン酸、ブチルスルフォン酸
、プロピルスルフォン酸等の有機酸あるいはこれらの混
合酸を用いることができる。これら発泡剤及び酸性硬化
剤の使用量０１種類によっても異なるが、レゾール型フ
ェノール樹脂１００重量部に対し発泡剤は概ね３乃至３
０重量部、酸性硬化剤は概ね６乃至５０重量部である。Once the support a is constructed, a foamable resin stock solution 6 consisting of a resol-type phenolic resin, a blowing agent, and an acidic curing agent is uniformly mixed with a mixer 5, and then supplied onto the support and cast. do. As the blowing agent used at this time, there can be used blowing agents that can be used in ordinary phenolic resin foams, such as alkali metal carbonates, alkaline earth metal carbonates, lower paraffins, alcohols, ethers, and chlorofluorinated hydrocarbons. Examples of acidic curing agents include inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, pyrophosphoric acid, and polyphosphoric acid; benzenesulfonic acid, toluenesulfonic acid, metacresolsulfonic acid, resorcinolsulfonic acid, butylsulfonic acid, and propylsulfonic acid; Organic acids or mixed acids thereof can be used. The amount of blowing agent and acid curing agent used varies depending on the type, but the amount of blowing agent used is approximately 3 to 3 parts per 100 parts by weight of resol type phenolic resin.
0 parts by weight, and the acidic curing agent is approximately 6 to 50 parts by weight.
レゾール型フェノール樹脂とこの発泡剤及び酸性硬化剤
は前述のように混合攪拌器５で混練されて均一に分散さ
せるが、混合攪拌器５に供給する前にそれらを２種類以
上予備混合しておいてもよい。The resol type phenolic resin, its blowing agent, and the acidic curing agent are kneaded and uniformly dispersed in the mixing agitator 5 as described above, but two or more of them must be premixed before being supplied to the mixing agitator 5. You can stay there.
また発泡性樹脂の原液３には必要に応じて難燃剤、充填
剤、整泡剤等を混合してもよいが、これらも混合攪拌器
５に直接供給してもよいし予備混合して供給してもよい
。Further, flame retardants, fillers, foam stabilizers, etc. may be mixed with the foamable resin stock solution 3 as necessary, but these may also be supplied directly to the mixer 5 or after being premixed. You may.
発泡性樹脂の原液３を支持体ａ上に流延すると、次に支
持体ａと同じように通気性のシート２を重着してなる液
不漏性で通気性のシート１からなる支持体すを支持体ａ
と平行に供給する。When the stock solution 3 of the foamable resin is cast onto the support a, a support consisting of a liquid-tight and breathable sheet 1 is formed by layering the breathable sheet 2 in the same manner as the support a. support a
Supplied parallel to.
支持体ａ及び支持体す及び支持体ａ上に流延された発泡
性樹脂の原液６は、連続的に何型装置６内を横切るよう
に移動させ、該打型装置内で発泡及び硬化反応を行わし
め成形する。この打型装置内での発泡及び硬化反応は、
レゾール型フェノール樹脂と酸性硬化剤が硬化反応を起
こし、その際発生する反応熱により発泡剤が揮発して発
泡を行うことよりなる。発泡及び硬化反応の進んでいる
レゾール型フェノール樹脂は支持体ａ、ｂにより規制さ
れると共に支持体ａ、ｂを構成するシート１が紙である
場合は原紙と強固に一体化する。また発泡ガスあるいは
水蒸気は、第２図に示すようにシート１を通過し、通気
性のシー）２の中を伝わって外部へ放出される。このた
めガスや水蒸気の滞溜による不均一なボイドは発生せず
に均一な発泡層が得られる。The support a and the foamable resin stock solution 6 cast onto the support a are continuously moved across the mold device 6 to undergo foaming and curing reactions within the mold device. and tighten and form. The foaming and curing reactions within this molding device are
The resol type phenolic resin and the acidic curing agent cause a curing reaction, and the foaming agent volatilizes due to the reaction heat generated at that time, resulting in foaming. The resol type phenolic resin, which has undergone foaming and curing reactions, is regulated by the supports a and b, and when the sheet 1 constituting the supports a and b is paper, it is firmly integrated with the base paper. Further, as shown in FIG. 2, the foaming gas or water vapor passes through the sheet 1, travels through the air-permeable sheet 2, and is discharged to the outside. Therefore, a uniform foam layer can be obtained without generating uneven voids due to accumulation of gas or water vapor.
Claims (1)
のシートからなる支持体ａ上に、レゾール型フェノール
樹脂と発泡剤及び酸性硬化剤とからなる発泡性樹脂の原
液を流延すると共に支持体ａと同一構成の支持体すを支
持体ａと平行に供給し、更に支持体ａ１ｂ及び発泡性猫
脂の原液を何型装置内を横切って連続移動させ該何型装
置内で発泡硬化を行い、その後支持体ａ及びｂを構成す
る通気性のシートを分離してなることを特徴とするフェ
ノール樹脂発泡体の連続成形方法。(1) A stock solution of a foamable resin consisting of a resol-type phenolic resin, a foaming agent, and an acidic curing agent is placed on a support a made of a liquid-tight and breathable sheet layered with a breathable sheet. At the same time, a support having the same structure as support a is supplied in parallel with support a, and the support a1b and the stock solution of foaming cat fat are continuously moved across the inside of the equipment. 1. A continuous molding method for a phenolic resin foam, which comprises carrying out foaming and curing within a mold, and then separating breathable sheets constituting supports a and b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57133752A JPS5924639A (en) | 1982-08-02 | 1982-08-02 | Continuous molding of phenolic resin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57133752A JPS5924639A (en) | 1982-08-02 | 1982-08-02 | Continuous molding of phenolic resin foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5924639A true JPS5924639A (en) | 1984-02-08 |
| JPH035973B2 JPH035973B2 (en) | 1991-01-28 |
Family
ID=15112105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57133752A Granted JPS5924639A (en) | 1982-08-02 | 1982-08-02 | Continuous molding of phenolic resin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924639A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8877106B2 (en) | 2009-04-28 | 2014-11-04 | Asahi Kasei Construction Materials Corporation | Device for forming thermosetting resin foam plate and method of manufacturing thermosetting resin foam plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133149A (en) * | 1979-11-12 | 1981-10-19 | Rhone Poulenc Ind | Continuous manufacture of phenol resin foam board |
-
1982
- 1982-08-02 JP JP57133752A patent/JPS5924639A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133149A (en) * | 1979-11-12 | 1981-10-19 | Rhone Poulenc Ind | Continuous manufacture of phenol resin foam board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH035973B2 (en) | 1991-01-28 |
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