JPS64203B2 - - Google Patents
Info
- Publication number
- JPS64203B2 JPS64203B2 JP14722882A JP14722882A JPS64203B2 JP S64203 B2 JPS64203 B2 JP S64203B2 JP 14722882 A JP14722882 A JP 14722882A JP 14722882 A JP14722882 A JP 14722882A JP S64203 B2 JPS64203 B2 JP S64203B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- preform
- screen
- spraying
- melt
- 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
Links
- 239000000853 adhesive Substances 0.000 claims description 25
- 230000001070 adhesive effect Effects 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 239000004831 Hot glue Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 3
- 239000012779 reinforcing material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 21
- 238000000465 moulding Methods 0.000 description 11
- 239000007921 spray Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/305—Spray-up of reinforcing fibres with or without matrix to form a non-coherent mat in or on a mould
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【発明の詳細な説明】
本発明は、合せ型を用いる強化プラスチツクス
成形に必要なプリフオームおよび一般成形用のマ
ツトの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a preform necessary for molding reinforced plastics using a mating mold and a mat for general molding.
合せ型成形法例えばマツチドダイ法、コールド
プレス法、レジンインジエクシヨン法等に用いら
れるプリフオームや一般成形に用いられるマツト
の製造において、従来は水性エマルジヨン接着
剤、水溶性接着剤または熱溶融型の粉末接着剤が
用いられており、ガラス繊維チヨツプドスランド
または連続ストランドをプリフオーム用スクリー
ン又はマツト製造用エンドレススクリーン上に堆
積させながら又は堆積した後に、これらの接着剤
をスプレー又は散布し、乾燥又は熱処理する方法
が行なわれている。 In the production of preforms used in mating molding methods such as the matte die method, cold press method, resin injecting method, etc., and mats used in general molding, conventionally water-based emulsion adhesives, water-soluble adhesives, or hot-melt powders have been used. Adhesives are used and these adhesives are sprayed or dispersed while or after the glass fiber chopped or continuous strands are deposited on a preform screen or an endless screen for mat production, and dried or A heat treatment method is used.
しかしながら、従来の方法においては、上記接
着剤を使用しているため、乾燥・熱処理炉が必要
であり、しかも乾燥、熱処理を確実ならしめ、作
業効率を上げるためには、多数のプリフオーム用
スクリーン又は長いエンドレススクリーンが必要
であり、設備費用が高価であつた。また上記接着
剤中の水の蒸発の他の炉自体やスクリーン、空気
を暖めるための熱ロスが多く、熱源費が高いとい
う問題があつた。 However, in the conventional method, since the above-mentioned adhesive is used, a drying and heat treatment oven is required, and in order to ensure drying and heat treatment and increase work efficiency, a large number of preform screens or A long endless screen was required and the equipment cost was high. In addition, there was a problem that there was a lot of heat loss due to the evaporation of the water in the adhesive and the heating of the furnace itself, the screen, and the air, and the cost of the heat source was high.
本発明は上記問題を解決するためのものであ
り、ポリオレフイン系、ポリエステル系等のホツ
トメルト型接着剤をガラス繊維等の補強材に溶融
吹付けし又は溶融散布後、冷却することを特徴と
し、乾燥・熱処理工程を排除して、省エネルギー
的かつ経済的なプリフオーム、マツトの製造方法
を提供することを目的とする。 The present invention is intended to solve the above problem, and is characterized by melt-spraying a polyolefin-based, polyester-based, etc. hot-melt adhesive onto a reinforcing material such as glass fiber, or cooling it after melting and spraying.・The purpose is to provide an energy-saving and economical method for manufacturing preforms and mats by eliminating the heat treatment process.
以下、本発明方法の実施例を図に従つて説明す
る。 Examples of the method of the present invention will be described below with reference to the drawings.
本発明方法の第１実施例の実施に使用されるプ
リフオーム用成形機を示す第１図において、１は
表面に孔加工が施されたプリフオーム用スクリー
ン、２はスクリーン上方に配設されたエア式スプ
レーノズル付ガン、３は接着剤の溶融装置、４は
スプレーエアーを加熱するための空気加熱器、５
はスクリーン１上方に位置しガラス繊維糸Ａを50
mm程度にカツトするためのカツター、６はガラス
繊維ロービング、７はチヤンバーである。なおス
プレーガン２の代りに、エアレス式スプレーノズ
ル付ガンを用いてもよいし、またガラスフレーム
溶射装置を用いてもよい。 In FIG. 1 showing a preform molding machine used for carrying out the first embodiment of the method of the present invention, 1 is a preform screen with holes processed on its surface, and 2 is an air type molding machine disposed above the screen. A gun with a spray nozzle, 3 an adhesive melting device, 4 an air heater for heating spray air, 5
is located above screen 1 and has 50 glass fiber threads A.
A cutter is used to cut into pieces of about mm, 6 is a glass fiber roving, and 7 is a chamber. Note that instead of the spray gun 2, a gun with an airless spray nozzle may be used, or a glass frame thermal spraying device may be used.
本発明方法で用いられる接着剤は、ホツトメル
ト型接着剤すなわち熱溶融可能な有機高分子系接
着剤例えばポリオレフイン系、ポリエテル系、ポ
リアミド系、合成ゴム系接着剤であつて、完全熱
可塑性でも適用後重合するタイプでも可能なもの
が使用できる。この接着剤は、特に限定されない
が例えば180℃での粘度が200〜50000C.P好まし
くは1000〜10000C.Pで使用するとよい。これは
粘度が低すぎるとスプレーガン等で噴射したとき
の粒滴の粒径が小さくなり過ぎて、ガラス繊維に
付着せずに吸引側へ通過してしまうし、また逆に
粘度が大き過ぎると、接着剤を送り出すポンプの
必要圧力が非常に大きくなつて実用性に乏しいか
らである。 The adhesive used in the method of the present invention is a hot melt adhesive, that is, a heat-meltable organic polymer adhesive, such as a polyolefin adhesive, a polyether adhesive, a polyamide adhesive, or a synthetic rubber adhesive, and even if it is completely thermoplastic, it can be used after application. Any polymerizable type can be used. This adhesive is preferably used with a viscosity of 200 to 50,000 C.P, preferably 1,000 to 10,000 C.P at 180° C., although it is not particularly limited. This is because if the viscosity is too low, the particle size of droplets when sprayed with a spray gun etc. will be too small and will pass through to the suction side without adhering to the glass fibers.On the other hand, if the viscosity is too high This is because the required pressure of the pump that pumps out the adhesive becomes extremely large, making it impractical.
次に上記プリフオーム成形機を用いて実施され
る本発明方法を述べると、第１図において、スク
リーン１の下方から矢印Ａ方向に吸引し、カツタ
ー５で所定長さにカツトされたストランドＢを吹
付けてスクリーン１上に吸引堆積させながら、溶
融装置３で溶融されたホツトメルト型接着剤Ｃを
スプレーガン２からスプレーエアーを送りながら
粒滴状または、くもの巣状（粘度および種類によ
るが）に吹付け、そして自然冷却する。この操作
によつて、所望のプリフオームが得られる。 Next, the method of the present invention carried out using the above-mentioned preform molding machine will be described. In FIG. The hot-melt adhesive C melted in the melting device 3 is applied and deposited on the screen 1 by suction, while sending spray air from the spray gun 2 into the shape of droplets or spider webs (depending on the viscosity and type). Spray and let cool naturally. A desired preform can be obtained by this operation.
なお、接着剤はカツトされたストランドの堆積
させるのと交互に吹付けることのできる。また接
着剤の溶融は、スプレー化に必要な流動性を与え
かつ熱分解、重合、炭化などを生じない温度で行
なう。 Note that the adhesive can be applied alternately with the deposition of the cut strands. The adhesive is melted at a temperature that provides the fluidity necessary for spraying and does not cause thermal decomposition, polymerization, carbonization, etc.
第２図に、ガラス繊維をカツトせずに長いまま
の連続ストランドで吹付け、プリフオームを成形
する例を示す。図中、８は、ストランドの連続送
り装置である。この成形方法では連続ストランド
B′が渦巻状にスクリーン１上に堆積し、そこに
上記ホツトメルト型接着剤Ｃが吹付けられ、自然
冷却することによつて所望のプリフオームを得る
ことができる。 FIG. 2 shows an example in which a long continuous strand of glass fiber is sprayed without being cut to form a preform. In the figure, 8 is a continuous strand feeding device. This forming method produces continuous strands
B' is deposited in a spiral shape on the screen 1, onto which the hot melt adhesive C is sprayed, and by cooling naturally, a desired preform can be obtained.
この連続ストランド方式によれば、カツトされ
たガラス繊維に比べて堆積されたガラス繊維層が
カサ高いため、全体（厚み方向）に均一に分散し
たりして成形品の強度、弾性率が向上し、またカ
ツトされたストランドを吹付ける場合のようにス
クリーン外へのストランドの飛びだしロスがなく
なるので、材料当りの製品歩留が顕著に向上する
という効果を奏する。 According to this continuous strand method, the deposited glass fiber layer is bulkier than cut glass fibers, so it is uniformly dispersed throughout (thickness direction), improving the strength and elastic modulus of the molded product. Furthermore, since there is no loss of strands flying out of the screen as in the case of spraying cut strands, the product yield per material is significantly improved.
さらに本発明においては、マツト製造時におい
ても上記プリフオーム製造法と同じく、カツトさ
れたストランドまたは連続ストランドをエンドレ
ススクリーン上に堆積させながら、または堆積さ
せた後、さらには堆積させるのと交互にホツトメ
ルト型接着剤を溶融スプレーし、自然冷却または
冷却ロールを用いて冷却圧着することによつて所
望のマツトを得ることができる。 Furthermore, in the present invention, when manufacturing the pine, similarly to the above-mentioned preform manufacturing method, the cut strands or continuous strands are deposited on the endless screen, or after being deposited, and then alternately with the deposition. A desired mat can be obtained by melt-spraying the adhesive and cooling and pressing it by natural cooling or by using a cooling roll.
以上説明したように本発明方法によれば、合せ
型成形法に用いるプリフオームや一般成形に用い
るマツトの製造において、従来使用されていた水
性エマルジヨン接着剤、水溶性接着剤または熱溶
融型の粉末接着剤の代りに、溶融状態のホツトメ
ルト型接着剤を使用するので、従来法を実施する
際に要した乾燥・熱処理工程を排除でき、従つて
乾燥・熱処理炉を不要にでき、さらに冷却するこ
とによつて直ちに接着するためプリフオーム用ス
クリーンの数を少なくでき、あるいはマツト製造
用のエンドレススクリーンを短かくでき、製造設
備の簡素を図ることができるので設備費も安価に
できる。さらに熱源費は、ホツトメルト型接着剤
の溶融、保温に要する熱源費だけですみ、従来法
に比べて熱ロスを少なくして省エネルギー化が図
れる。 As explained above, according to the method of the present invention, water-based emulsion adhesives, water-soluble adhesives, or hot-melt powder adhesives that have been conventionally used in the production of preforms used in laminated molding methods and mats used in general molding methods can be used. Since a hot-melt adhesive in a molten state is used instead of a hot melt adhesive, the drying and heat treatment steps required when implementing the conventional method can be eliminated, and a drying and heat treatment oven can be eliminated. Therefore, since bonding is immediate, the number of preform screens can be reduced, or the length of an endless screen for mat production can be shortened, and manufacturing equipment can be simplified, resulting in lower equipment costs. Furthermore, the heat source cost is only that required for melting the hot-melt adhesive and keeping it warm, which reduces heat loss and saves energy compared to conventional methods.
第１図はプリフオーム成形機を用いて実施され
る本発明方法の第１実施例を示す工程図、第２図
は第１図とは異なるプリフオーム成形機を用いて
実施される本発明方法の第２実施例を示す工程図
である。
１…プリフオーム用スクリーン、２…スプレー
ガン、５…カツター、６…ガラス繊維ロービン
グ、Ｂ…カツトされたストランド、Ｃ…接着剤。
FIG. 1 is a process diagram showing a first embodiment of the method of the present invention carried out using a preform molding machine, and FIG. 2 is a process diagram showing a first embodiment of the method of the present invention carried out using a preform molding machine different from that in It is a process diagram showing 2nd Example. 1... Screen for preform, 2... Spray gun, 5... Cutter, 6... Glass fiber roving, B... Cut strand, C... Adhesive.
Claims (1)
クリーンにガラス繊維等の補強材を堆積させなが
ら又は堆積した後に、接着剤を吹付け又は散布し
てプリフオーム、マツトを製造する方法におい
て、接着剤としてホツトメルト型接着剤を使用
し、該接着剤を溶融吹付けし又は溶融散布後、冷
却することを特徴とするプリフオーム、マツトの
製造方法。1. In a method of manufacturing a preform or mat by spraying or scattering an adhesive while or after depositing a reinforcing material such as glass fiber on a preform screen or an endless screen, a hot melt adhesive is used as the adhesive. A method for producing a preform or mat, which comprises melt-spraying the adhesive or cooling it after melt-spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14722882A JPS5935917A (en) | 1982-08-25 | 1982-08-25 | Preparation of preformed mat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14722882A JPS5935917A (en) | 1982-08-25 | 1982-08-25 | Preparation of preformed mat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5935917A JPS5935917A (en) | 1984-02-27 |
| JPS64203B2 true JPS64203B2 (en) | 1989-01-05 |
Family
ID=15425462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14722882A Granted JPS5935917A (en) | 1982-08-25 | 1982-08-25 | Preparation of preformed mat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935917A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6030575A (en) * | 1991-10-21 | 2000-02-29 | The Dow Chemical Company | Method for making preforms |
| US5413750A (en) * | 1992-04-08 | 1995-05-09 | Davidson Textron Inc. | Method of fabricating a preform |
| DE102011076150A1 (en) * | 2011-05-19 | 2012-11-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Method, apparatus and apparatus for applying a binder to at least one layer of a multilayer preform |
-
1982
- 1982-08-25 JP JP14722882A patent/JPS5935917A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5935917A (en) | 1984-02-27 |
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