JPS6153021A - Manufacture of foamed container - Google Patents
Manufacture of foamed containerInfo
- Publication number
- JPS6153021A JPS6153021A JP59175373A JP17537384A JPS6153021A JP S6153021 A JPS6153021 A JP S6153021A JP 59175373 A JP59175373 A JP 59175373A JP 17537384 A JP17537384 A JP 17537384A JP S6153021 A JPS6153021 A JP S6153021A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- mold
- container
- foamed
- softened
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 7
- 238000000071 blow moulding Methods 0.000 abstract description 6
- 239000006260 foam Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 description 16
- -1 polyethylene terephthalate Polymers 0.000 description 8
- 239000004604 Blowing Agent Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 229920001519 homopolymer Polymers 0.000 description 5
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 239000004156 Azodicarbonamide Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 3
- 235000019399 azodicarbonamide Nutrition 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- PXGZQGDTEZPERC-UHFFFAOYSA-N 1,4-cyclohexanedicarboxylic acid Chemical compound OC(=O)C1CCC(C(O)=O)CC1 PXGZQGDTEZPERC-UHFFFAOYSA-N 0.000 description 1
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical compound O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- UUAGPGQUHZVJBQ-UHFFFAOYSA-N Bisphenol A bis(2-hydroxyethyl)ether Chemical compound C=1C=C(OCCO)C=CC=1C(C)(C)C1=CC=C(OCCO)C=C1 UUAGPGQUHZVJBQ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000004464 hydroxyphenyl group Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- 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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
【発明の詳細な説明】
皇呈上■剋■光国
本発明は、機械的強度、断熱性、剛性に優れ、保温用容
器、インスタント食品用容器等として適当な中空発泡容
器の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a hollow foam container that has excellent mechanical strength, heat insulation, and rigidity and is suitable as a heat-retaining container, a container for instant food, and the like.
従来の技術
従来より、発泡剤を含有する熱可塑性溶融樹脂をパイプ
状に押出し、これを金型内で気体圧力によりブロー成形
する、いわゆる押出ダイレクトブロー成形により中空容
器容器を得ることは可能であったが、この方法では、口
栓部も発泡しているため、口栓部のネジ状部に要求され
る強度及び寸法精度を得ることは出来ないばかりか、成
形温度が融点以上であるため、ブロー成形された発泡容
器に延伸がかからず、容器としての機械的強度も低いも
のとなっていた。Conventional Technology Conventionally, it has been possible to obtain hollow containers by extrusion direct blow molding, in which a molten thermoplastic resin containing a foaming agent is extruded into a pipe shape and then blow molded in a mold using gas pressure. However, with this method, since the spout is also foamed, it is not possible to obtain the strength and dimensional accuracy required for the threaded part of the spout, and the molding temperature is above the melting point. The blow-molded foamed container was not stretched, and the mechanical strength of the container was low.
発明が解゛ しようとする問題点
本発明らは、特に、口栓部の強度及び寸法精度に優れ、
且つ容器としての機械的強度の高い発泡容器として、口
栓部が実質的に無発泡で、且つ容器の肉薄部分が少なく
とも一方向を配向されてなる発泡容器を得る方法につい
て鋭意研究の結果、本発明に到達した。Problems to be Solved by the Invention The present invention particularly has excellent strength and dimensional accuracy of the spout,
As a result of intensive research into a method for obtaining a foam container with a spout that is substantially non-foamed and whose thin wall portion is oriented in at least one direction, the present invention was developed as a foam container with high mechanical strength. invention has been achieved.
朋１博Ｊ】りむしり１Δ災役
即ち本発明は、発泡剤を含有する熱可塑性溶融樹脂を射
出して成形した、実質的に無発泡のバリソンの、口栓部
を除く部分を加熱して発泡を起こさせ、次いで加熱部分
が軟化している内に、延伸ブロー成形することからなる
発泡容器の製造法である。[Tomo 1 Hiroshi J] Rimushiri 1Δ Disaster That is, the present invention is a substantially non-foamed balisong molded by injection of a thermoplastic molten resin containing a foaming agent, by heating the parts other than the spout part. This is a method for manufacturing a foamed container, which involves causing foaming and then stretch-blow molding while the heated portion is softened.
本発明をさらに具体的に説明すれば、例えば次の如くで
ある。The present invention will be described in more detail, for example, as follows.
先ず、射出成形機を用い、発泡剤を含有する熱可塑性溶
融樹脂を射出シリンダーより金型内に射出し、冷却固化
させた後、金型を開いてパリソンを取り出す。このパリ
ソンは、高圧状態で冷却固化されるため、少々の気泡の
発生はあるものの、実質的に発泡はしていないものであ
る。First, using an injection molding machine, a molten thermoplastic resin containing a foaming agent is injected into a mold from an injection cylinder, cooled and solidified, and then the mold is opened and the parison is taken out. Since this parison is cooled and solidified under high pressure, although some bubbles may be generated, there is substantially no foaming.
次ぎに、このパリソンの口栓部を除く部分をヒーターに
より加熱する。その方法としては、口栓部を遮蔽板で覆
ってヒーターの熱が伝わらないようにすると共に、パリ
ソンを回転させて均一に加熱される方法が適当である。Next, a portion of the parison except for the spout is heated by a heater. A suitable method for this is to cover the spout with a shielding plate to prevent heat from the heater from being transferred, and to rotate the parison to ensure uniform heating.
加熱によりパリソンが軟化するに従い、高圧にて樹脂中
に溶けこんでいた発泡剤により気泡が発生し、発泡が行
われる。As the parison softens due to heating, air bubbles are generated by the foaming agent dissolved in the resin under high pressure, resulting in foaming.
次ぎに、このパリソンが軟化している内に、パリソンを
ブロー金型内に移送し、内部に高圧ガスを導入して、賦
形と冷却を行い、その後発泡容器を金型内より取り出す
。Next, while the parison is softening, the parison is transferred into a blow mold, high-pressure gas is introduced into the interior to perform shaping and cooling, and then the foaming container is removed from the mold.
本発明で使用する熱可塑性樹脂としては、ポリエステル
樹脂、ポリアミド樹脂、ポリオレフィン系樹脂、ポリア
クリル系樹脂、ポリ塩化ビニル樹脂、ポリスチレン樹脂
等が挙げられる。Thermoplastic resins used in the present invention include polyester resins, polyamide resins, polyolefin resins, polyacrylic resins, polyvinyl chloride resins, polystyrene resins, and the like.
本発明で使用するポリエステル樹脂としては、例えば、
ポリエチレンテレフタレート、ポリブチレンテレフタレ
ート、ポリシクロヘキサンジメチレンテレフタレートの
如き単独重合体の他、テレフタル酸、イソフタル酸、ジ
フェニルエーテル−４，４−ジカルボン酸、ナフタレン
−１，４又は２，６−ジカルボン酸、アジピン酸、セバ
シン酸、デカン−１，１０−ジカルボン酸、ヘキサヒド
ロテレフタル酸等の１種以上と、エチレングリコール以
外にプロピレングリコール、１，４−ブタンジオール、
ネオペンチルグリコール、ジエチレングリコール、シク
ロヘキサンジメタツール、２，２−ビス（４−５ヒドロ
キシフエニル）プロパン、２．２−ビス（４−ヒドロキ
シエトキシフェニル）プロパン等の１種以上を４０モル
％、好ましくは２０モル％以下を含むグリコール成分と
の共重合体、更にはこれらの単独重合体又は共重合体の
混合物が挙げられる。Examples of the polyester resin used in the present invention include:
In addition to homopolymers such as polyethylene terephthalate, polybutylene terephthalate, and polycyclohexane dimethylene terephthalate, terephthalic acid, isophthalic acid, diphenyl ether-4,4-dicarboxylic acid, naphthalene-1,4 or 2,6-dicarboxylic acid, adipic acid , sebacic acid, decane-1,10-dicarboxylic acid, hexahydroterephthalic acid, etc., and in addition to ethylene glycol, propylene glycol, 1,4-butanediol,
40 mol% of one or more of neopentyl glycol, diethylene glycol, cyclohexane dimetatool, 2,2-bis(4-5 hydroxyphenyl) propane, 2,2-bis(4-hydroxyethoxyphenyl) propane, etc., preferably Examples include copolymers with glycol components containing 20 mol% or less, and mixtures of homopolymers or copolymers thereof.
本発明で使用するポリアミド樹脂としては、例えば、ポ
リカプラミド（ナイロン６）、ポリウンデカンアミド（
ナイロン１１）、ポリラウリンラクタム（ナイロン１２
）、ポリヘキサメチレンアジパミド（ナイロン６．６）
、ポリへキサメチレンセパカミド（ナイロン６．１２）
、カプロラクタム／ラウリンラクタム共重合体、カプロ
ラクタム／ヘキサメチレンジアンモニウムアジペート共
重合体、ラウリンラクタム／ヘキサメチレンジアンモニ
ウムアジペート共重合体の如き、脂肪族ポリアミド樹脂
、ポリメタキシリレンアジパミド、ポリメタキシリレン
アジパミド、ポリメタキシリレンアジパミド、メタキシ
リレン／パラキシリレンアジパミド共重合体、メタキシ
リレン／パラキシリレンアジパミド共重合体、メタキシ
リレン／パラキシリレンアジパミド共重合体のような芳
香族ポリアミド樹脂及びこれらの単独重合体又は共重合
体の混合物が挙げられる。Examples of the polyamide resin used in the present invention include polycapramide (nylon 6), polyundecaneamide (
Nylon 11), Polylaurinlactam (Nylon 12)
), polyhexamethylene adipamide (nylon 6.6)
, polyhexamethylene sepacamide (nylon 6.12)
, caprolactam/laurinlactam copolymer, caprolactam/hexamethylene diammonium adipate copolymer, laurinlactam/hexamethylene diammonium adipate copolymer, aliphatic polyamide resins, polymethaxylylene adipamide, polymethaxylylene adipamide, etc. Aromatics such as pamide, polymethaxylylene adipamide, metaxylylene/paraxylylene adipamide copolymer, metaxylylene/paraxylylene adipamide copolymer, metaxylylene/paraxylylene adipamide copolymer Mention may be made of polyamide resins and mixtures of homopolymers or copolymers thereof.
本発明で使用するポリオレフィン樹脂としては、エチレ
ン、プロピレン、ブチレン等のα−オレフィンの単独重
合体又はこれらのα−オレフィンを主成分とする、他の
ビニル化合物との共重合体、例えば、低密度ポリエチレ
ン、リニアー低密度ポリエチレン、高密度ポリエチレン
、ポリプロピレン、ポリイソブチレン、エチレン−プロ
ピレン共重合体、エチレンーフチレン共重合体、プロピ
レン−ブチレン共重合体、エチレン−酢酸ビニル共重合
体、プロピレン−酢酸ビニル共重合体等が挙げられる。The polyolefin resin used in the present invention is a homopolymer of α-olefins such as ethylene, propylene, butylene, or a copolymer containing these α-olefins as a main component with other vinyl compounds, such as a low-density polymer. Polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, polyisobutylene, ethylene-propylene copolymer, ethylene-phthylene copolymer, propylene-butylene copolymer, ethylene-vinyl acetate copolymer, propylene-vinyl acetate Examples include copolymers.
本発明で使用するポリアクリル系樹脂としては、メタク
リル酸エステル部分を６５％以上含む単独重合体又は共
重合体、例えば、ポリメタクリル酸メチル、ポリメタク
リル酸エチル、メタクリル酸メチルとスチレン、α−メ
チルスチレン等との共重合体、ゴム系物質にメタクリル
酸メチル、アクリル酸エチル等を共重合又はグラフト重
合させた重合体等が挙げられる。The polyacrylic resin used in the present invention is a homopolymer or copolymer containing 65% or more of methacrylic acid ester moiety, such as polymethyl methacrylate, polyethyl methacrylate, methyl methacrylate and styrene, α-methyl Examples include copolymers with styrene and the like, and polymers obtained by copolymerizing or graft-polymerizing methyl methacrylate, ethyl acrylate, etc. with rubber-based substances.
本発明で使用する発泡剤としては、例えば、アゾジカル
ボンアミド、重曹等の分解型発泡剤及びフロン系や炭化
水素系等の有機溶剤型発泡剤が挙げられる。Examples of the blowing agent used in the present invention include decomposition-type blowing agents such as azodicarbonamide and sodium bicarbonate, and organic solvent-type blowing agents such as fluorocarbon-based and hydrocarbon-based blowing agents.
本発明に於いては、必要に応じて、着色剤、紫外線吸収
剤、帯電防止剤、熱酸化劣化防止剤、滑剤、核剤を、本
発明の目的を損なわない範囲に於いて、原料熱可塑性樹
脂に添加することが出来る。In the present invention, colorants, ultraviolet absorbers, antistatic agents, thermal oxidative deterioration inhibitors, lubricants, and nucleating agents may be added to the thermoplastic raw material as necessary to the extent that the purpose of the present invention is not impaired. Can be added to resin.
作用及び発明の効果
本発明によれば、口栓部が実質的に無発泡で、且つ容器
の肉薄部分が少なくとも一方向を配向されてなる、特に
、口栓部の強度及び寸法精度に優れ、且つ容器としての
機械的強度、断熱性、剛性の高い発泡容器を得ることが
出来る。Effects of the Invention According to the present invention, the spout is substantially non-foamed, and the thin wall portion of the container is oriented in at least one direction, and the spout has particularly excellent strength and dimensional accuracy. In addition, a foamed container with high mechanical strength, heat insulation, and rigidity can be obtained.
尚、本発明に於いては、口栓部が射出成形して得られた
ままであるため、パリソンの金型にねし加工をしておけ
ば、得られる発泡容器はキャップシールが可能である。In the present invention, since the spout remains as obtained by injection molding, the foamed container obtained can be cap-sealed if the mold of the parison is machined.
実施例 以下実施例により、本発明を更に詳細に説明する。Example The present invention will be explained in more detail with reference to Examples below.
実施例１
発泡剤として０．５重量％のアゾジカルボンアミドラ含
む、固有粘度０．７８のポリエチレンテレフタレートを
射出成形機を用いて溶融し、金型内に射出して、外径２
６鰭、長さ１２３訃、肉厚３能のパリソンを成形した。Example 1 Polyethylene terephthalate containing 0.5% by weight of azodicarbonamide as a blowing agent and having an intrinsic viscosity of 0.78 was melted using an injection molding machine and injected into a mold to form a mold with an outer diameter of 2.
A parison with 6 fins, 123 fins in length, and 3 fins in thickness was molded.
次に、このパリソンの口栓部（長さ２３■）を除く部分
番ヒーターにて加熱して発泡を起こさせ、その後ブロー
成形機の金型内に移送して、高圧ガスを導入して延伸ブ
ロー成形を行い、外径２６顛、長さ２７５１ｍ、胴部分
の肉厚５３０μ、内容積１１のボトル形状をした発泡容
器を得た。Next, the part of the parison except for the spout (length 23cm) is heated with a heater to cause foaming, and then transferred to the mold of a blow molding machine and stretched by introducing high pressure gas. Blow molding was performed to obtain a bottle-shaped foam container with an outer diameter of 26 mm, a length of 2,751 m, a body wall thickness of 530 μm, and an internal volume of 11 mm.
尚、射出成形金型のパリソン口栓部にある部分にはねじ
状の加工がなされていた。Incidentally, the portion of the parison mouth plug of the injection mold was machined into a thread shape.
製造条件及び得られた発泡容器の容器性能は、第１表に
記載した如くであった。The manufacturing conditions and the container performance of the foamed container obtained were as listed in Table 1.
実施例２
アゾジカルボンアミドの使用量を、１．０ＩＴｆｉｔ％
とした他は、実施例１に準じて行った。Example 2 The amount of azodicarbonamide used was 1.0ITfit%
The same procedure as in Example 1 was carried out except for the following.
製造条件及び得られた発泡容器の容器性能は、第１表に
記載した如くであった。The manufacturing conditions and the container performance of the foamed container obtained were as listed in Table 1.
実施例３
熱可塑性樹脂として、固有粘度０．７５のポリエチレン
テレフタレート９０重量部と、相対粘度２゜１のポリメ
タキシリレンアジパミド１０重量部との混合物を使用し
た他は、実施例１に準じて行った。Example 3 The same procedure was followed as in Example 1, except that a mixture of 90 parts by weight of polyethylene terephthalate with an intrinsic viscosity of 0.75 and 10 parts by weight of polymethaxylylene adipamide with a relative viscosity of 2°1 was used as the thermoplastic resin. I went.
製造条件及び得られた発泡容器の容器性能は、第１表に
記載した如くであった。The manufacturing conditions and the container performance of the foamed container obtained were as listed in Table 1.
第１表
１１、単位はｃｃ／ｄａｙ −ａｔｍ ・本″：非接触
型赤外線温度計にて測定した。Table 1 11, unit: cc/day -atm * Book'': Measured with a non-contact infrared thermometer.
特許出願人 三菱瓦斯化学株式会社
代理人 弁理士 小 堀 貞 文
手続主甫正書（自発）
昭和６０年４月１１日
２、発明の名称
発泡容器の製造法
３、補正する者
事件との関係 特許出願人
住所（■１００）東京都千代田区丸の内二丁目５番２号
名称（４４６）三菱瓦斯化学株式会社
代表者 長 野 和 吉
４、代理人
５、補正の対象
明細書の「特許請求の範囲」の欄及び［発明の詳細「一
方向を」を「一方向に」に訂正する。Patent Applicant: Mitsubishi Gas Chemical Co., Ltd. Agent, Patent Attorney: Sadafumi Kobori Proceeding Principal Proposal (Spontaneous) April 11, 1985 2. Title of Invention: Process for Manufacturing Foam Containers 3. Relationship with the Amended Person's Case Patent Applicant Address (■100) 2-5-2 Marunouchi, Chiyoda-ku, Tokyo Name (446) Mitsubishi Gas Chemical Co., Ltd. Representative Kazuyoshi Nagano 4, Agent 5 ``Range'' column and [Details of the invention: ``In one direction'' is corrected to ``In one direction.''
■明細書第８真下から第７行目 「外径２６ｍＪを「外径８０ｍ＋＋Ｊに訂正する。■Line 7 from the bottom of No. 8 of the statement "Correct the outer diameter of 26mJ to 80m++J.
７、添付書類の目録
（１） 別紙（特許請求の範囲） １
通へ
別紙（特許請求の範囲）
（１）発泡剤を含有する熱可塑性溶融樹脂を射出して成
形した、実質的に無発泡のパリソンの、口栓部を除く部
分を加熱して発泡を起こさせ、次いで加熱部分が軟化し
ている内に、延伸ブロー成形することを特徴とするエロ
栓部が実質的に無発泡で、且つ容器の肉薄部分が少なく
とも一方向員配向されてなる発泡容器の製造法。7. List of attached documents (1) Attachment (Claims) 1
Appendix (Claims) (1) A substantially non-foamed parison molded by injection of a thermoplastic molten resin containing a foaming agent, except for the spout, is heated to cause foaming. and then stretch-blow molding while the heated part is softened.A foamed container characterized in that the elastic stopper part is substantially non-foamed and the thin part of the container is oriented in at least one direction. Manufacturing method.
Claims (1)
形した、実質的に無発泡のパリソンの、口栓部を除く部
分を加熱して発泡を起こさせ、次いで加熱部分が軟化し
ている内に、延伸ブロー成形することを特徴とする口栓
部が実質的に無発泡で、且つ容器の肉薄部分が少なくと
も一方向を配向されてなる発泡容器の製造法(1) A substantially non-foamed parison molded by injection of a thermoplastic molten resin containing a foaming agent is heated to cause foaming, excluding the spout, and then the heated portion is softened. A method for producing a foamed container in which the spout is substantially non-foamed and the thin walled portion of the container is oriented in at least one direction, the container being stretch-blow-molded during the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59175373A JPS6153021A (en) | 1984-08-23 | 1984-08-23 | Manufacture of foamed container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59175373A JPS6153021A (en) | 1984-08-23 | 1984-08-23 | Manufacture of foamed container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6153021A true JPS6153021A (en) | 1986-03-15 |
Family
ID=15994962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59175373A Pending JPS6153021A (en) | 1984-08-23 | 1984-08-23 | Manufacture of foamed container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6153021A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005081756A2 (en) | 2004-02-17 | 2005-09-09 | Plastic Technologies, Inc. | Container having a foamed wall |
| US7115309B2 (en) * | 2000-12-20 | 2006-10-03 | Yoshino Kogyosho Co., Ltd. | Synthetic resin preform to be biaxially stretched and blow molded into a bottle |
| WO2007007867A1 (en) | 2005-07-13 | 2007-01-18 | Toyo Seikan Kaisha, Ltd. | Plastic container having pearl-like appearance and process for producing the same |
| JP2007022554A (en) * | 2005-07-13 | 2007-02-01 | Toyo Seikan Kaisha Ltd | Plastic container having pearly appearance, and manufacturing method therefor |
| JP2007320082A (en) * | 2006-05-30 | 2007-12-13 | Toyo Seikan Kaisha Ltd | Method for producing resin-integrated molding |
| JP2007320068A (en) * | 2006-05-30 | 2007-12-13 | Toyo Seikan Kaisha Ltd | Resin-integrated molding and its production method |
| EP1999517A2 (en) * | 2006-03-20 | 2008-12-10 | Plastic Technologies, Inc. | Foamed-wall container having a silvery appearance |
| EP2185337A2 (en) * | 2007-09-12 | 2010-05-19 | University of Washington | Methods for blow molding solid-state cellular thermoplastic articles |
| JP2011168337A (en) * | 2011-02-16 | 2011-09-01 | Toyo Seikan Kaisha Ltd | Manufacturing method of plastic container having pearl-like appearance |
| US9694515B2 (en) | 2002-10-30 | 2017-07-04 | Plastic Technologies, Inc. | Overmolded container having an inner foamed layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413567A (en) * | 1977-07-01 | 1979-02-01 | Asahi Chem Ind Co Ltd | Molding of foamed article |
-
1984
- 1984-08-23 JP JP59175373A patent/JPS6153021A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413567A (en) * | 1977-07-01 | 1979-02-01 | Asahi Chem Ind Co Ltd | Molding of foamed article |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7115309B2 (en) * | 2000-12-20 | 2006-10-03 | Yoshino Kogyosho Co., Ltd. | Synthetic resin preform to be biaxially stretched and blow molded into a bottle |
| US7964257B2 (en) | 2000-12-20 | 2011-06-21 | Yoshino Kogyosho Co., Ltd. | Synthetic resin preform to be biaxially stretched and blow molded into a bottle |
| US9694515B2 (en) | 2002-10-30 | 2017-07-04 | Plastic Technologies, Inc. | Overmolded container having an inner foamed layer |
| EP1727658A4 (en) * | 2004-02-17 | 2009-09-09 | Plastic Techn Inc | Container having a foamed wall |
| JP4823076B2 (en) * | 2004-02-17 | 2011-11-24 | プラスティック テクノロジーズ インコーポレイテッド | Container with foam wall |
| JP2007527335A (en) * | 2004-02-17 | 2007-09-27 | プラスティック テクノロジーズ インコーポレイテッド | Container with foam wall |
| WO2005081756A2 (en) | 2004-02-17 | 2005-09-09 | Plastic Technologies, Inc. | Container having a foamed wall |
| EP2910483A1 (en) | 2005-07-13 | 2015-08-26 | Toyo Seikan Kaisha, Ltd. | Plastic container having pearl-like appearance and preform for producing the same |
| US10370139B2 (en) | 2005-07-13 | 2019-08-06 | Toyo Seikan Kaisha, Ltd. | Plastic container having pearl-like appearance and process for producing the same |
| JP2007022554A (en) * | 2005-07-13 | 2007-02-01 | Toyo Seikan Kaisha Ltd | Plastic container having pearly appearance, and manufacturing method therefor |
| US8397932B2 (en) | 2005-07-13 | 2013-03-19 | Toyo Seikan Kaisha, Ltd. | Plastic container having pearl-like appearance and process for producing the same |
| WO2007007867A1 (en) | 2005-07-13 | 2007-01-18 | Toyo Seikan Kaisha, Ltd. | Plastic container having pearl-like appearance and process for producing the same |
| KR101233002B1 (en) | 2005-07-13 | 2013-02-13 | 도요 세이칸 가부시키가이샤 | Plastic container having pearl-like appearance and process for producing the same |
| JP2009530205A (en) * | 2006-03-20 | 2009-08-27 | プラスティック テクノロジーズ インコーポレイテッド | Foamed wall container with silver appearance |
| EP1999517A2 (en) * | 2006-03-20 | 2008-12-10 | Plastic Technologies, Inc. | Foamed-wall container having a silvery appearance |
| EP1999517A4 (en) * | 2006-03-20 | 2012-07-18 | Plastic Techn Inc | Foamed-wall container having a silvery appearance |
| JP2007320082A (en) * | 2006-05-30 | 2007-12-13 | Toyo Seikan Kaisha Ltd | Method for producing resin-integrated molding |
| JP2007320068A (en) * | 2006-05-30 | 2007-12-13 | Toyo Seikan Kaisha Ltd | Resin-integrated molding and its production method |
| EP2185337A4 (en) * | 2007-09-12 | 2014-12-03 | Univ Washington | Methods for blow molding solid-state cellular thermoplastic articles |
| EP2185337A2 (en) * | 2007-09-12 | 2010-05-19 | University of Washington | Methods for blow molding solid-state cellular thermoplastic articles |
| JP2011168337A (en) * | 2011-02-16 | 2011-09-01 | Toyo Seikan Kaisha Ltd | Manufacturing method of plastic container having pearl-like appearance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1727658B1 (en) | Process for preparing a container having a foamed wall | |
| KR920000005B1 (en) | Biaxially oriented plastic container with excellent heat-resistance and gas barrier properties | |
| JP4839708B2 (en) | Plastic container with pearly appearance | |
| JP3814032B2 (en) | Molding | |
| US20080251487A1 (en) | Overmolded container having a foam layer | |
| US6746643B1 (en) | Molding method for blow molded product | |
| JPS6153021A (en) | Manufacture of foamed container | |
| RU2446945C2 (en) | Container with walls made of foam material having silver appearance | |
| JP5954105B2 (en) | Propylene-based resin foam stretch-molded body and method for producing the same | |
| JPH059259B2 (en) | ||
| JP3777338B2 (en) | Non-crosslinked biodegradable polyester resin pre-expanded particles, molded product thereof and method for producing the pre-expanded particles | |
| JP3688179B2 (en) | Thermoplastic polyester resin foamed particles for in-mold foam molding and method for producing in-mold foam molded article using the same | |
| JP3722727B2 (en) | In-mold foam molded article of thermoplastic polyester resin, its production method and its use | |
| CN1925969A (en) | Container having a foamed wall | |
| JP5929085B2 (en) | Foam stretch container and method for producing the same | |
| US20110189417A1 (en) | Process for preparing container having a foamed wall | |
| JP2001018283A (en) | Production of hollow foamed blow molded object | |
| JP2787214B2 (en) | Method for producing composite foam | |
| JPS6341733B2 (en) | ||
| JP3107569B2 (en) | Foamed polyester sheet and method for producing the same | |
| JP2016078922A (en) | Polyolefin foamable and stretched container | |
| JPH0124629B2 (en) | ||
| JPS6137091B2 (en) | ||
| MX2008011900A (en) | Foamed-wall container having a silvery appearance. | |
| JP2666235C (en) |