JPH02187435A - Preparation of synthetic resin foamed product requiring no aging period - Google Patents
Preparation of synthetic resin foamed product requiring no aging periodInfo
- Publication number
- JPH02187435A JPH02187435A JP1007283A JP728389A JPH02187435A JP H02187435 A JPH02187435 A JP H02187435A JP 1007283 A JP1007283 A JP 1007283A JP 728389 A JP728389 A JP 728389A JP H02187435 A JPH02187435 A JP H02187435A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- synthetic resin
- raw material
- crystallizing agent
- agent
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 17
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 17
- 230000032683 aging Effects 0.000 title abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002667 nucleating agent Substances 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 29
- 239000012188 paraffin wax Substances 0.000 claims description 15
- 238000005187 foaming Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 20
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 238000010924 continuous production Methods 0.000 abstract 1
- 239000003063 flame retardant Substances 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000001273 butane Substances 0.000 description 6
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000005070 ripening Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001293 FEMA 3089 Substances 0.000 description 1
- 241001137350 Fratercula Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Molding Of Porous Articles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は製品形成後の養生又は熟成期間が不要で、かつ
折曲可能なる合成樹脂発泡体の製造法に間するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a method for producing a synthetic resin foam that does not require a curing or aging period after product formation and is bendable.
熱可塑性合成樹脂、例えば低密度ポリエチレン（ＬＤＰ
Ｅン、一般ボリスチレン（ＧＰＰＳ”）その他を用い、
これを所要倍率に発泡させてシート状又は管状に成形し
、断熱効果、クツション性を有する発泡保温管０発泡シ
ート、丸棒ロッド、発泡ネット等としている。Thermoplastic synthetic resins, such as low density polyethylene (LDP)
Using E-en, general polystyrene (GPPS) and others,
This is foamed to a required ratio and molded into a sheet or tube shape to produce a foamed insulation tube zero foamed sheet, a round bar rod, a foamed net, etc. that have heat insulating effects and cushioning properties.
熱可塑性合成樹脂を発泡させるには前記合成樹脂の素材
に予め定められた所要量の造核剤。In order to foam the thermoplastic synthetic resin, a predetermined amount of nucleating agent is added to the synthetic resin material.
滑剤を混合し、この原料を押出機に供給し、押出機のス
クリュ一部分を移送されるとき溶融させ、この溶融原料
中に発泡助剤のガス体を正大混合する。このガス体とし
てはフレオンガス。A lubricant is mixed, this raw material is fed to an extruder, and is melted as it is transferred through a portion of the screw of the extruder, and a gaseous foaming agent is thoroughly mixed into the molten raw material. This gas is Freon gas.
ブダンガス、ＬＰＧ、 二塩化エチルガス等が使用さ
れる。モして押出機よりシート状、管状。Boudan gas, LPG, ethyl dichloride gas, etc. are used. It is made into sheets and tubes using an extruder.
棒状など所要形状に成形された発泡製品は押し出し直後
、すなわち金型より吐出された直後、収縮現象が生じ発
泡助剤として使用されたガス体の約７０％が大気中に放
出され、３日〜３ヶ月閑をかけて放出ガス量とほぼ同量
の空気を自然吸入して製品は押出直後の形状に復帰する
。Immediately after extrusion of a foamed product molded into a desired shape such as a rod, that is, immediately after it is discharged from a mold, a shrinkage phenomenon occurs, and about 70% of the gas used as a foaming aid is released into the atmosphere, and it lasts for 3 days or more. After 3 months of rest, the product will naturally inhale almost the same amount of air as the amount of released gas, and the product will return to its shape immediately after extrusion.
従ってこのガス置換現象が行なわれる一定期閏を製品の
養生又は熟成期間を経過した後、製品として出荷してい
る。Therefore, the product is shipped after a certain period of time during which this gas replacement phenomenon takes place, during which time the product is cured or matured.
熱可塑性合成樹脂の発泡体製品は発泡助剤として使用さ
れるガス量により発泡倍率が５〜５０倍あるいはそれ以
上となり極めて嵩高いものとなる。しかし製造後ガス置
換が行なわれる３日〜３ケ月程度の養生又は熟成期間が
要し、この期間中製品として出荷することができないの
で、工場内もしくは倉庫内で保管する必要がある。この
ため養生又は熟成期間として保管する倉庫等を要し、か
つコスト高となる欠点がある。Thermoplastic synthetic resin foam products have a foaming ratio of 5 to 50 times or more depending on the amount of gas used as a foaming aid, making them extremely bulky. However, after production, a curing or ripening period of about 3 days to 3 months is required during which gas replacement is performed, and the product cannot be shipped during this period, so it must be stored in a factory or warehouse. For this reason, a warehouse or the like is required for storage during the curing or ripening period, and the cost is high.
さらに−酸ポリスチレン系発泡シートはその性質上折曲
げが不可能であり、従フてその用途も限定されたもので
あった。Furthermore, acid polystyrene foam sheets cannot be bent due to their nature, and therefore their uses have been limited.
本発明は上述のような発泡製品のガス置換を行なう養生
又は熟成期間を要さず、かつ折曲自在な発泡体製品を得
ることを目的とする。An object of the present invention is to obtain a foam product that does not require a curing or aging period for gas replacement as described above and is bendable.
熱可塑性合成樹脂の索材に所要の造核剤、滑剤を混合し
、これを加熱溶融加圧下にて移送し、かつその移送途上
にて発泡助剤としての瓦斯を注入して連続的に合成樹脂
発泡体を製造する工程に於て、前記素材等の溶融移送下
で、かつ瓦斯注入前にパラフィン系結晶剤を圧入して混
合撹拌し、この結晶剤にて発泡被膜を形成させ、発泡助
剤のガスを密封する。The required nucleating agent and lubricant are mixed with the thermoplastic synthetic resin rope material, and the mixture is transferred under heat, melting, and pressure, and during the transfer, gas is injected as a foaming aid for continuous synthesis. In the process of manufacturing a resin foam, a paraffin-based crystallizing agent is press-injected and mixed and stirred while the above-mentioned materials are being melted and transferred, and before the gas is injected, a foaming film is formed with this crystallizing agent, and a foaming agent is used. Seal the agent gas.
以下本発明を実施例にもとづき説明する。 The present invention will be explained below based on examples.
図面は熱可塑性合成樹脂の発泡体を製造する再に使用さ
れる押出機の概略説明図で、所要の径と長さを有するシ
リンダー１内にスクリュー２を貫通させ、このスクリュ
ー２の一端、すなわち基ｆＪ＃側を駆動機（図示せず）
にて駆動させ、スクリュー先端側より発泡体製品を押出
吐出する。The drawing is a schematic illustration of an extruder used to produce thermoplastic synthetic resin foam. A screw 2 is passed through a cylinder 1 having the required diameter and length, and one end of the screw 2, i.e. Drive machine (not shown) on the base fJ# side
The foam product is extruded and discharged from the tip of the screw.
シリンダー１はその基端側に原料供給口３を設け、この
供給口３より熱可塑性合成樹脂に無機質の微細な造核剤
（０，３〜０．４％）及び滑剤（０，０３％）を混合し
た原料を供給し、スクリュー２にてシリンダー内をその
基端側より先端吐出側へ移送する。このシリンダーｌに
は供給原料が溶融するようヒータ（図示せず）が備えら
れ、原料は加熱溶融してシリンダー内を移送されるよう
になす。The cylinder 1 is provided with a raw material supply port 3 on its base end side, and a fine inorganic nucleating agent (0.3 to 0.4%) and a lubricant (0.03%) are supplied to the thermoplastic synthetic resin from this supply port 3. A mixed raw material is supplied, and the screw 2 transfers the inside of the cylinder from the base end to the distal end discharge side. This cylinder 1 is equipped with a heater (not shown) to melt the raw material to be supplied, so that the raw material is heated and melted and transferred within the cylinder.
また前記スクリュー２はその基端側より順次フィードゾ
ーン２１． コンプレッションゾーン２２、メタリン
グゾーン２３．ミキシングゾーン２４と区分され、供給
口３より供給された原料はこのスクリューの各ゾーンを
経る時に、移送、加圧移送、調整移送、撹拌移送される
。またシリンダーｌにはスクリュー２にて移送される溶
融原料がコンプレッションゾーン２２の終端部にきたと
き、すなわちメタリングゾーン２３の直前位置で結晶剤
供給口４よリバラフィン系結晶剤を溶融して供給され、
原料に混合される。Further, the screw 2 has feed zones 21 and 21 sequentially from its base end side. Compression zone 22, metering zone 23. It is divided into a mixing zone 24, and the raw material supplied from the supply port 3 is transferred, pressurized transfer, adjustment transfer, and stirred transfer when passing through each zone of this screw. In addition, when the molten raw material transferred by the screw 2 reaches the end of the compression zone 22, that is, just before the metering zone 23, the cylinder 1 is supplied with melted ribafin-based crystallizing agent through the crystallizing agent supply port 4. ,
Mixed with raw materials.
このパラフィン系結晶剤としては６ｏから７６℃の融点
、比重０．８〜０．９５ 、 化学成分中性で、ガソ
リン、テレピン油、二硫化炭素系にて溶融し、かつ電気
絶縁性に富み、引火点１５０度以上、水への親和性が無
く、無公害性を有するものが使用される。This paraffin-based crystallizing agent has a melting point of 6°C to 76°C, a specific gravity of 0.8 to 0.95, is chemically neutral, melts in gasoline, turpentine oil, and carbon disulfide, and is highly electrically insulating. Those with a flash point of 150 degrees or higher, no affinity for water, and non-polluting properties are used.
溶融原料にパラフィン系結晶剤を添加混合した後、シリ
ンダー１のメタリングゾーンとミキシングゾーンとの中
間点又はその近傍位置にてガス供給口δを設け、これよ
り発泡助剤としてのガスもしくは液化ガスを供給し、前
記原料に混合撹拌させ、吐出口より吐出される時、所望
倍率に発泡して製品とするものである。After adding and mixing the paraffin-based crystallizing agent to the molten raw material, a gas supply port δ is provided at or near the midpoint between the metering zone and the mixing zone of the cylinder 1, and the gas or liquefied gas as a foaming aid is supplied through the gas supply port δ. is supplied, the raw materials are mixed and stirred, and when discharged from the discharge port, the product is foamed to a desired ratio.
この発泡助剤として使用されるガスはフレオンガスＮａ
１２． 同Ｎａ １１４． ブタンガス、 ＬＰ
Ｇその他である。また使用した原料はＬＤＰＥＭｌｌ〜
１２及びＧＰＰＳ ＭＩ３から７で、使用押出機はタ
ンデム型Ｌ／Ｄ３２、スクリュー径５５ｍと、同Ｌ ／
Ｄ ２５． スクリュー径７６−の２台である。The gas used as this foaming aid is Freon gas Na
12. Same Na 114. Butane gas, LP
G and others. Also, the raw materials used were LDPEMll~
12 and GPPS MI3 to 7, the extruder used is a tandem type L/D32, screw diameter 55m, and the same L/D32.
D25. There are two screws with a diameter of 76 mm.
結晶剤供給口４にはパフイン系結晶剤を溶融せしめる温
度制御付ヒータを埋設したタンクを設け、このタンク内
にてパラフィン系結晶剤を７０〜９０℃に加熱して溶融
液状とし２００〜３５０ ｋｇ ／ ｃｄの高圧で高圧
ポンプにてシリンダーのコンプレッションゾーン部へ原
料１００部に対し、１〜１．５部の割合で注入し、さら
にコンプレッションゾーン通過後のメタリングゾーン部
にフレオンガスＮａ １２を原料ＩＯ２部に対して２４
％注入した。その結果、獲られた発泡製品の形状は２種
類で、その一つは肉厚１０−の発泡保温管（チューブ）
、もう一つは同上金型を交換し厚み４ＩＩＩＩｌ×幅１
０００−の発泡シートである。The crystallizing agent supply port 4 is provided with a tank embedded with a temperature-controlled heater for melting the puffin-based crystallizing agent, and in this tank, the paraffin-based crystallizing agent is heated to 70 to 90°C to form a molten liquid with a weight of 200 to 350 kg. Inject 1 to 1.5 parts per 100 parts of the raw material into the compression zone of the cylinder using a high-pressure pump at a high pressure of / cd, and then add Freon gas Na 12 to the metering zone after passing through the compression zone. 24 for part
% injected. As a result, there were two types of foamed products, one of which was a foamed heat-retaining tube with a wall thickness of 10 mm.
, the other one replaces the same mold as above and has a thickness of 4IIIl x width of 1
000- foam sheet.
何れも発泡倍率は３０倍であった。パラフィン剤注入時
の内部圧力は２３０〜２５０ｋｇ／ｌ！ｌＩ／であり、
又、ガス注入時のシリンダー内部の圧力は１３０〜１８
０ｋｇ／ｃ＋／であった。In both cases, the expansion ratio was 30 times. The internal pressure when injecting paraffin agent is 230-250 kg/l! lI/,
Also, the pressure inside the cylinder when gas is injected is 130 to 18
It was 0 kg/c+/.
この実験で判明したことは、パラフィン系結晶剤を注入
しない場合、同じフレオンガスＮＱＩ２を使用した場合
の発泡倍率は約３０％低下することが判った。What was found in this experiment was that when the paraffinic crystallizing agent was not injected, the foaming ratio was reduced by about 30% when the same Freon gas NQI2 was used.
更に、得られた発泡体を比較してみると、パラフィン系
結晶剤を注入しない場合の発泡体は、３〜１０日を経過
しなくては所定の発泡倍率にならないのに対し、パラフ
ィン系結晶剤を注入して獲られた発泡体は発泡直後、倍
率を計量しても一切の収量現象が起こらず熟成又は養生
期間が発生しないことが判った。Furthermore, when comparing the obtained foams, it was found that the foams without paraffin crystallization agent did not reach the desired expansion ratio for 3 to 10 days, whereas the foams with paraffin crystals It was found that the foam obtained by injecting the agent showed no yield phenomenon even when the magnification was measured immediately after foaming, and no ripening or curing period occurred.
又、同じフロン系のＮａ１１４を使用しパラフィン系結
晶剤と混合して押し出しても、Ｎａ１２を使用した場合
と発泡倍率は全く同一であった。Furthermore, even when the same Freon-based Na114 was mixed with a paraffin-based crystallizing agent and extruded, the expansion ratio was exactly the same as when Na12 was used.
他方パラフィン系結晶剤を除去して同一処方で生産した
ところフロンガスＮα１２と比べＮａ１１４は約３０％
増加した発泡体を得ることができた。On the other hand, when the paraffin-based crystallizing agent was removed and the product was produced using the same recipe, Na114 was about 30% compared to fluorocarbon gas Na12.
It was possible to obtain an increased foam.
また、ちなみにフレオンＮａ１２及びブタンガスを使用
の場合、従来の方法では収縮現象が完全に復元するのに
７日〜１ケ月を必要とする。Furthermore, in the case of using Freon Na12 and butane gas, it takes 7 days to 1 month for the shrinkage phenomenon to completely recover in the conventional method.
この実験で明らかになったことは、パラフィン系結晶剤
に含有している分子が分散剤の役目を果たしていること
、更に、被膜効果を保っていることである。This experiment revealed that the molecules contained in the paraffin-based crystallizing agent functioned as a dispersant and also maintained the coating effect.
即ち、溶融された樹Ｎ（主原料）に完全にガスと共に溶
融分散された後、ポリマー現象となり、発泡助剤注入後
は完全に発泡共重合体を形成し、空気の峻入現象を必要
とせず完全な無架橋の発泡体どなることが判明した。That is, after being completely melted and dispersed with gas into the molten wood N (main raw material), it becomes a polymer phenomenon, and after injection of the foaming aid, it completely forms a foamed copolymer, requiring the phenomenon of air intrusion. It was found that the foam was completely non-crosslinked.
従来の方法で完全な発泡体を得るためには、大気圏の空
気温度次第で養生期間の不均一を招き、春夏秋冬、午前
、午後と晴れ、曇、雨等の温度変化に相乗し養生期間（
発泡体が完全復元すること）が異なっているのが常識で
あったが、パラフィン系結晶剤をガスと混合注入するこ
とにより、温度変化、空気入換現象も発生せず、指示通
りの発泡体が得られることがテスト結果に現われた。In order to obtain a perfect foam using the conventional method, the curing period becomes uneven depending on the atmospheric air temperature, and the curing period increases due to temperature changes such as spring, summer, fall, winter, morning, afternoon, sunny, cloudy, rainy etc. (
It was common knowledge that the foam would completely recover, but by injecting the paraffin-based crystallizing agent mixed with gas, there would be no temperature change or air exchange phenomenon, and the foam would be able to be produced as instructed. The test results showed that this could be obtained.
上記実験は、フレオンＮａ１２、Ｎ１１１１４を主とし
て得られた数値であるが、近来フレオンガスの大気汚染
が世論上論議されていることを考慮し、オゾン層の破壊
の無い揮発系ガス、この場合ブタンガスを用いてテスト
したところ、フロンガス同様金型より吐出された発泡体
からはブタンガスの大気への放出結果は皆無であった。In the above experiment, the values obtained were mainly for Freon Na12 and N11114, but considering that air pollution caused by Freon gas has recently been discussed in public opinion, a volatile gas that does not destroy the ozone layer, in this case butane gas, was used. When tested, no butane gas was released into the atmosphere from the foam discharged from the mold, as was the case with fluorocarbon gas.
この時の実験は、２０Ｑのガラスビンに金型吐出後のＬ
ＤＰＥ発泡シート厚み４ ｍ Ｘ幅５０制×長１００閤
を切断し、水道水と共に投下し蓋をしガス漏れ状態をテ
ストした結果、泡発ガス発生の有無をテストしたところ
、−切アブク現象を見出さなかった。In this experiment, the L after discharging the mold into a 20Q glass bottle was
A DPE foam sheet 4 m thick x 50 m wide x 100 m long was cut, dropped with tap water, covered with a lid, and tested for gas leakage. When we tested the presence or absence of bubbling gas, we found that - cut-off phenomenon was detected. I didn't find it.
又、ブタン入りＧＰＰＳシートは静電気等で発火するが
、本パラフィン系結晶剤を混入した発泡製品は摩擦テス
トにより静電気の発生を促しても発火現象が見られなか
フた。In addition, butane-containing GPPS sheets can catch fire due to static electricity, etc., but foamed products mixed with this paraffin-based crystallizing agent showed no ignition phenomenon even when static electricity was generated in a friction test.
更に、養生期間持続効果を確かめるため１ケ年以上自然
放置して発泡体を計重したところ、倍率は生産した時と
変化が無いことが判明した。Furthermore, in order to confirm the sustained effect during the curing period, we weighed the foam after leaving it for more than a year, and it was found that the magnification was unchanged from when it was produced.
更に、ＧＰＰＳ系樹脂ＭＩ＝３〜７の原料１００部に副
原料として造核剤０．３〜４、滑剤０．０３を混入し、
上述した押出機で、パラフィン系結晶剤１．２％、ブタ
ンガス７％を注入したところ、発泡シート厚み２醜×幅
１Ｏ００ＩＩＩＩＩｌのｐｓ発泡体で約１０倍の発泡倍
率が得られた。Furthermore, nucleating agent 0.3 to 4 and lubricant 0.03 were mixed as auxiliary raw materials to 100 parts of raw material of GPPS resin MI = 3 to 7,
When 1.2% of a paraffin crystallizing agent and 7% of butane gas were injected into the extruder described above, a foaming ratio of about 10 times was obtained with a PS foam having a foam sheet thickness of 2mm x width of 1000IIII.
このテストの主目的は、パラフィン系結晶剤を無注入の
場合でも同一発泡体が得られるのは周知の事実であるが
、無注入の場合で得られた発泡体は跪く、折曲げ作業が
不可能であったが、パラフィン系結晶剤を注入して得ら
れたＰＳ発泡体は、折曲げ作業をしても破壊現象が見ら
れず産業上の有効利用として様々な市場性あることが判
明した。The main purpose of this test is that it is a well-known fact that the same foam can be obtained even without injection of paraffinic crystallizing agent, but the foam obtained without injection does not require kneeling or bending. However, the PS foam obtained by injecting a paraffin-based crystallizing agent showed no breakage even after bending, and it was found that it has various marketability as an effective industrial use. .
本発明は次の如き効果を奏する。 The present invention has the following effects.
養生期間不要のため、生産後、即用性でき貯蔵倉庫の必
要がなく流通性に優れている。又折曲げ作業をしても破
壊現象が生じないので段ボール箱に代えて包装箱を形成
することもでき、段ボール箱、酒・牛乳・果汁箱のパッ
ク用齋材となり、従来の紙カートンと比べ、断熱・保冷
効果が顕著となり、流通過程に大幅な効果を果たす、即
ち、熱シール性、印刷性も良くなり美麗性、化粧性を発
揮させる場合、ラミネート加工したＯＰＳ印刷フィルム
等を施せば、更に華麗な化粧箱が生産される。Since it does not require a curing period, it can be used immediately after production, and there is no need for storage warehouses, making it excellent in distribution. In addition, since no breakage occurs even during bending operations, packaging boxes can be formed in place of cardboard boxes, and can be used as fillers for packaging cardboard boxes, alcohol, milk, and fruit juice boxes, and are more durable than traditional paper cartons. If the heat insulation and cold preservation effects are noticeable and have a significant effect on the distribution process, that is, the heat sealability and printability are improved, and the beauty and cosmetic properties are exhibited, if laminated OPS printing film etc. is applied, Even more gorgeous presentation boxes are produced.
特に、厚み２〜４舖シート、発泡倍率１０〜１２倍は軽
化粧箱として食品包装、食品包装箱、又、前述のあらゆ
るカートンバック全般の索材として多様化される。In particular, sheets with a thickness of 2 to 4 mm and a foaming ratio of 10 to 12 times can be used as light decorative boxes for food packaging, food packaging boxes, and as a cording material for all of the above-mentioned carton bags.
又、厚み４から６１１Ｉｌｌ厚のＧＰＰＳ発泡体は段ボ
ール箱に流用でき、ガスバリヤ−性はもちろん断熱・保
冷効果があり、生鮮野菜箱・流通箱として使用可能であ
り、その加工の容易性（Ｉ！缶機にて加工可能）でわか
る通り流通に多大な用途が間かれる。In addition, GPPS foam with a thickness of 4 to 611 Ill can be used for cardboard boxes, and has not only gas barrier properties but also insulation and cold storage effects, and can be used as fresh vegetable boxes and distribution boxes, and is easy to process (I! As you can see, it has many uses in distribution.
図面は本発明養生期間不要の合成樹脂発泡体の製造法の
一実施例図を示す。
ｌはシリンダー ２はスクリュー ３は原料供給口、４
は結晶側供給口、５はガス供給口、２２はコンプレッシ
ョンゾーン、２３メタリングゾーン。The drawing shows an embodiment of the method for producing a synthetic resin foam that does not require a curing period according to the present invention. l is cylinder, 2 is screw, 3 is raw material supply port, 4
is the crystal side supply port, 5 is the gas supply port, 22 is the compression zone, and 23 is the metal ring zone.
Claims (1)
混合し、これを加熱溶融加圧下にて移送し、かつその移
送途上にて発泡助剤としての瓦斯を注入して連続的に合
成樹脂発泡体を製造する工程に於て、前記素材等の溶融
移送下で、かつ瓦斯注入前にパラフィン系結晶剤を圧入
して混合撹拌し、この結晶剤にて発泡被膜を形成させ、
発泡助剤のガスを密封することを特徴とする養生期間不
要の合成樹脂発泡体の製造法。(1) Mix the necessary nucleating agent and lubricant with the thermoplastic synthetic resin material, transfer it under heat and melting pressure, and continuously inject gas as a foaming aid during the transfer. In the process of manufacturing a synthetic resin foam, a paraffin-based crystallizing agent is press-injected and mixed and stirred while the materials are melt-transferred and before gas injection, and a foamed film is formed with this crystallizing agent,
A method for producing a synthetic resin foam that does not require a curing period and is characterized by sealing the gas of a foaming aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1007283A JPH02187435A (en) | 1989-01-13 | 1989-01-13 | Preparation of synthetic resin foamed product requiring no aging period |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1007283A JPH02187435A (en) | 1989-01-13 | 1989-01-13 | Preparation of synthetic resin foamed product requiring no aging period |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02187435A true JPH02187435A (en) | 1990-07-23 |
Family
ID=11661708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1007283A Pending JPH02187435A (en) | 1989-01-13 | 1989-01-13 | Preparation of synthetic resin foamed product requiring no aging period |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02187435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04225041A (en) * | 1990-12-27 | 1992-08-14 | Sekisui Plastics Co Ltd | Production of polystyrene resin foamed product |
-
1989
- 1989-01-13 JP JP1007283A patent/JPH02187435A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04225041A (en) * | 1990-12-27 | 1992-08-14 | Sekisui Plastics Co Ltd | Production of polystyrene resin foamed product |
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