JP2003311885A - Two-layered molded product - Google Patents
Two-layered molded productInfo
- Publication number
- JP2003311885A JP2003311885A JP2002124881A JP2002124881A JP2003311885A JP 2003311885 A JP2003311885 A JP 2003311885A JP 2002124881 A JP2002124881 A JP 2002124881A JP 2002124881 A JP2002124881 A JP 2002124881A JP 2003311885 A JP2003311885 A JP 2003311885A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- hole
- resin portion
- force
- molded product
- 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.)
- Abandoned
Links
Landscapes
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Closures For Containers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２つの異なる樹脂
部分を有する二層成形品に関する。TECHNICAL FIELD The present invention relates to a two-layer molded article having two different resin parts.
【０００２】[0002]
【発明が解決しようとする課題】この種の二層成形品と
して、容器などの開口に設けられるキャップがあり、こ
の一例を図８及び図９に示すと、キャップ101は、第１
の樹脂からなる蓋体102と、第２の樹脂であるエラスト
マーからなるシール材103とからなり、成形において
は、金型内のキャビティに一方の樹脂を充填して成形し
た後、キャビティに他方の樹脂を充填し、両樹脂を一体
化したものである。As a two-layer molded article of this type, there is a cap provided at an opening of a container or the like. When an example of this is shown in FIGS. 8 and 9, the cap 101 is the first
And a sealing material 103 made of an elastomer which is a second resin. In molding, one cavity is filled with one resin in the mold, and then the other cavity is filled in the cavity. Resin is filled and both resins are integrated.
【０００３】前記蓋体102は容器などの開口104を塞ぐた
めに用いられ、その開口104に前記シール材103を押し当
てて取り付けることにより開口104がシールされる。そ
して、上記のようなキャップ101では、開口104に押し当
てたシール材103が弾性変形することにより、シール性
を確保しているため、シール材103の開口104に当たる部
分の弾力性が低下し易い。The lid 102 is used to close an opening 104 of a container or the like, and the opening 104 is sealed by pressing the sealing material 103 against the opening 104 and attaching it. In the cap 101 as described above, the sealing property is secured by elastically deforming the sealing material 103 pressed against the opening 104, so that the elasticity of the portion of the sealing material 103 that contacts the opening 104 is likely to decrease. .
【０００４】また、シール材103の他側の面は蓋体102に
規制されているため、開口104が押す力をシール材３の
他側に逃げることができず、力が押された箇所に集中す
るから、この押された箇所の付近でシール材103の剥離
Ｈが発生し易く、剥離Ｈが発生すると、シール性を損ね
る問題があり、このように第２の樹脂部分に力が加わる
二層成形品では、第２の樹脂部分が第１の樹脂部分から
剥離し易いという問題がある。Further, since the other surface of the sealing material 103 is regulated by the lid body 102, the force pushed by the opening 104 cannot escape to the other side of the sealing material 3, so that the portion where the force is pushed cannot be escaped. Since the concentration is concentrated, the peeling H of the sealing material 103 is likely to occur in the vicinity of the pressed portion, and when the peeling H occurs, there is a problem that the sealing property is impaired. In this way, the force is applied to the second resin portion. The layer-formed product has a problem that the second resin portion is easily separated from the first resin portion.
【０００５】本発明は、このような問題点を解決しよう
とするもので、第２の樹脂部分に力が加わる二層成形品
において、第２の樹脂部分の部分的な弾力性の低下と剥
離を防止できる二層成形品を提供することを目的とす
る。The present invention is intended to solve such a problem, and in a two-layer molded product in which a force is applied to the second resin portion, the second resin portion is partially reduced in elasticity and peels off. It is an object of the present invention to provide a two-layer molded product capable of preventing the above phenomenon.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、第１
の樹脂と第２の樹脂とを順次金型内のキャビティにゲー
トから注入して充填することにより成形され、前記第１
の樹脂部分より第２の樹脂部分の弾性が大きい二層成形
品において、前記第１の樹脂部分は第２の樹脂部分との
重なり箇所に対応して貫通孔を有するものである。The invention according to claim 1 is the first
And the second resin are sequentially injected from the gate into the cavity in the mold to fill the cavity.
In the two-layer molded product in which the elasticity of the second resin portion is larger than that of the resin portion, the first resin portion has a through hole corresponding to the overlapping portion with the second resin portion.
【０００７】第２の樹脂部分に潰す力が加わり変形する
と、力が加わった側の反対側に貫通孔があるため、その
貫通孔が逃げとなって第２の樹脂部分の変形分を部分的
に吸収するため、前記力が加わった部分付近の弾力性の
低下及び第２の樹脂部分の剥離を防止できる。When a crushing force is applied to the second resin portion to deform it, there is a through hole on the side opposite to the side to which the force is applied. Therefore, the through hole serves as an escape for the deformation of the second resin portion. Therefore, it is possible to prevent the lowering of elasticity near the portion to which the force is applied and the peeling of the second resin portion.
【０００８】また、請求項２の発明は、請求項１の発明
において、前記貫通孔内に前記第２の樹脂部分が入り込
んでいるものである。According to a second aspect of the present invention, in the first aspect of the invention, the second resin portion is inserted into the through hole.
【０００９】貫通孔内の第２に樹脂部分は、貫通孔の開
口側が規制されないから、第２の樹脂部分の変形時の逃
げとなり、また、貫通孔部分においても第２の樹脂部分
が一体化される。The second resin portion in the through hole is a relief when the opening side of the through hole is not regulated, so that the second resin portion is also integrated in the through hole portion. To be done.
【００１０】また、請求項３の発明は、請求項１又は２
の発明において、前記貫通孔を複数有するものである。The invention of claim 3 is the same as claim 1 or 2.
In the above invention, a plurality of through holes are provided.
【００１１】第２の樹脂部分に加わる力の箇所に対応し
て、第１の樹脂部分に複数の貫通孔を形成することによ
り、力を受けた際の変形をそれら貫通孔により効果的に
吸収することができる。By forming a plurality of through holes in the first resin portion corresponding to the location of the force applied to the second resin portion, the through holes effectively absorb the deformation when receiving the force. can do.
【００１２】また、請求項４の発明は、請求項１又は２
の発明において、第１の樹脂部分には第２の樹脂部分と
の重なり箇所に溝部を有し、この溝部と同一形状の溝部
が前記第２の樹脂部分の前記重なり箇所の他側に設けら
れているものである。The invention of claim 4 is the same as claim 1 or 2.
In the invention described above, the first resin portion has a groove portion at an overlapping portion with the second resin portion, and a groove portion having the same shape as the groove portion is provided on the other side of the overlapping portion of the second resin portion. It is what
【００１３】第２の樹脂部分の他の部材が当たる箇所に
溝部を形成し、この溝部に対応して第１の樹脂部分にも
溝部が形成されているから、他の部材が溝部に当り、両
者の密着性に優れ、また、第２の樹脂部分は溝部も他の
箇所とほぼ同一厚さとなるから、成形時における樹脂の
流動性が良好となる。Since a groove is formed in a portion of the second resin portion where another member abuts, and the groove is also formed in the first resin portion corresponding to the groove, another member hits the groove. The adhesion between the two is excellent, and since the groove portion of the second resin portion has almost the same thickness as the other portions, the fluidity of the resin at the time of molding becomes good.
【００１４】また、請求項５の発明は、請求項１〜４の
発明において、前記第１の樹脂部分が蓋体であり、前記
第２の樹脂部分がエラストマーからなるシール材であ
る。A fifth aspect of the present invention is the sealing material according to any one of the first to fourth aspects, wherein the first resin portion is a lid and the second resin portion is an elastomer.
【００１５】シール材に力が加わっても、貫通孔が逃げ
となり、蓋体からシール材が剥離することを防止でき
る。Even if a force is applied to the sealing material, it is possible to prevent the sealing material from peeling off from the lid by escaping the through hole.
【００１６】[0016]
【発明の実施形態】以下、本発明の第１実施形態につい
て、図１〜図３を参照しながら説明する。同図は、プリ
ンタのインクタンク用の保護キャップ１を示し、この保
護キャップ１は、プラストマーからなる第１の樹脂とエ
ラストマーからなる第２の樹脂との二層成形品である。
第１の樹脂は橙色などの所定の色に着色されていて不透
明であり、第２の樹脂は透明ないし半透明（乳白色）で
ある。以下、第１の樹脂からなる部分を蓋体２という。
また、第２の樹脂からなる部分は、シール材３であり、
このシール材３は、インクタンク本体のインク出口111
を閉塞し、この例では、筒状をなすインク出口111の先
端縁112は先端に向って縮小する形状である断面略三角
形に形成されている。DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. The figure shows a protective cap 1 for an ink tank of a printer, which is a two-layer molded product of a first resin made of a plastomer and a second resin made of an elastomer.
The first resin is colored in a predetermined color such as orange and is opaque, and the second resin is transparent or translucent (milky white). Hereinafter, the portion made of the first resin is referred to as the lid 2.
Further, the portion made of the second resin is the sealing material 3,
This seal material 3 is used for the ink outlet 111 of the ink tank body.
Is closed, and in this example, the leading edge 112 of the cylindrical ink outlet 111 is formed in a substantially triangular cross-section that is reduced toward the tip.
【００１７】前記蓋体２は、円板状の蓋板部４と、この
蓋板部４の周囲で内面側に突出する周壁部５とを一体に
有し、また、シール材３は蓋体２の内面に一体に設けら
れている。前記蓋板部４の中心に内外面を貫通する貫通
孔６を形成し、シール材３には前記貫通孔６内に入り込
んだ嵌入部７が一体に設けられている。The lid body 2 integrally includes a disc-shaped lid plate portion 4 and a peripheral wall portion 5 projecting to the inner surface side around the lid plate portion 4, and the sealing material 3 is a lid body. It is integrally provided on the inner surface of 2. A through hole 6 is formed in the center of the lid plate portion 4 so as to penetrate the inner and outer surfaces thereof, and a fitting portion 7 that is inserted into the through hole 6 is integrally provided in the sealing material 3.
【００１８】前記キャップ１は、第１の樹脂と第２の樹
脂とを順次金型内のキャビティにゲートから注入して充
填することにより成形され、その成形方法の一例を図２
〜図３を用いて説明する。The cap 1 is molded by sequentially injecting a first resin and a second resin into a cavity in a mold by filling the cavity through a gate, and an example of the molding method is shown in FIG.
~ It demonstrates using FIG.
【００１９】金型は、固定型11と可動型12を有し、所謂
コアバック式のものであり、それらの間にキャビティ13
が形成される。固定型11と可動型12とのパーティーライ
ンにはランナー14が設けられ、このランナー14とキャビ
ティ13との間に、第１の樹脂を注入するトンネルゲート
15が設けられている。また、可動型12は、前記貫通孔６
を形成するピン体16と、このピン体16に型開閉方向に移
動可能に外嵌され蓋体２の内面及びシート材３の内面を
形成する移動型体17とを備える。また、固定型11には第
２の樹脂を注入するゲート18が設けられている。The mold has a fixed mold 11 and a movable mold 12, and is a so-called core back type, and a cavity 13 is provided between them.
Is formed. A runner 14 is provided on the party line between the fixed mold 11 and the movable mold 12, and a tunnel gate for injecting the first resin between the runner 14 and the cavity 13.
15 are provided. Further, the movable die 12 has the through hole 6
And a movable die body 17 that is fitted onto the pin body 16 so as to be movable in the mold opening / closing direction and that forms the inner surface of the lid body 2 and the inner surface of the sheet material 3. Further, the fixed mold 11 is provided with a gate 18 for injecting the second resin.
【００２０】そして、まず、蓋体２を形成するには、図
２に示すように、貫通孔６を形成するピン体16を固定型
11に突き当てると共に、ゲート18を塞ぎ、移動型体17の
先端面を蓋板部４の内面に対応した位置で固定し、蓋体
２に対応したキャビティ13を形成する。この後、トンネ
ルゲート15から第１の樹脂をキャビティ13に充填し、樹
脂が硬化した後、移動型体17及びピン体16を後退（図中
下側に移動）し、図３に示すように、移動型体17の先端
面をシート材３の内面に対応した位置で固定すると共
に、ピン体16の先端面をシート材３の内面に対応した位
置で固定する。これにより蓋体２の内面とピン体16及び
移動型体17との間にシート材３に対応したキャビティ13
を形成し、ゲート18から第２の樹脂を注入し、第２の樹
脂が硬化した後、型開きと離型を行い、型開きにより周
壁部５とランナー14とがトンネルゲート15にて切り離さ
れ、固定型11から図示しない突き出し機構により保護キ
ャップ１を離型すると、ゲート18にて第２の樹脂が切り
離される。First, in order to form the lid body 2, as shown in FIG. 2, the pin body 16 forming the through hole 6 is fixed.
While abutting against 11, the gate 18 is closed, and the front end surface of the movable die body 17 is fixed at a position corresponding to the inner surface of the lid plate portion 4 to form the cavity 13 corresponding to the lid body 2. Then, the cavity 13 is filled with the first resin from the tunnel gate 15, and after the resin is cured, the movable mold body 17 and the pin body 16 are retracted (moved to the lower side in the figure), and as shown in FIG. The tip surface of the movable die 17 is fixed at a position corresponding to the inner surface of the sheet material 3, and the tip surface of the pin body 16 is fixed at a position corresponding to the inner surface of the sheet material 3. As a result, a cavity 13 corresponding to the sheet material 3 is provided between the inner surface of the lid body 2 and the pin body 16 and the movable die body 17.
After injecting the second resin from the gate 18 and hardening the second resin, the mold opening and the mold releasing are performed, and the peripheral wall portion 5 and the runner 14 are separated by the tunnel gate 15 by the mold opening. When the protective cap 1 is released from the fixed mold 11 by a protrusion mechanism (not shown), the second resin is separated at the gate 18.
【００２１】このようにして得られた保護キャップ１に
おいては、図１に示すように、先端縁112が先鋭なイン
ク出口111にシート材３の内面を当てると、該先端縁112
に押された部分が弾性変形し、特に、先端縁112が断面
略三角形状をなすから、先端縁112の内側と外側にシー
ト材３を押す力が加わるが、シート材３の外面（蓋体２
の内面に当たる面）に貫通孔６が形成されているため、
変形分が貫通孔６内の嵌入部７に吸収され、押された部
分の弾力性の低下及び押された部分付近における第２の
樹脂の剥離が防止される。In the protective cap 1 thus obtained, as shown in FIG. 1, when the inner surface of the sheet material 3 is applied to the ink outlet 111 having a sharp edge 112, the edge 112 is sharpened.
The portion pressed by the elastically deforms, and in particular, since the leading edge 112 has a substantially triangular cross section, a force for pushing the sheet material 3 is applied to the inside and the outside of the leading edge 112. Two
Since the through hole 6 is formed on the inner surface of the
The deformed portion is absorbed by the fitting portion 7 in the through hole 6, so that the elasticity of the pressed portion is reduced and the peeling of the second resin in the vicinity of the pressed portion is prevented.
【００２２】このように本実施形態では、請求項１に対
応して、第１の樹脂と第２の樹脂とを順次金型内のキャ
ビティ13にゲート15，18から注入して充填することによ
り成形され、前記第１の樹脂部分である蓋体２より第２
の樹脂部分であるシール材３の弾性が大きい二層成形品
において、蓋体２はシール材３との重なり箇所に対応し
て貫通孔６を有するから、第２に樹脂部分に潰す力が加
わり変形すると、力が加わった側の反対側に貫通孔６が
あるため、その貫通孔６が逃げとなって第２の樹脂部分
の変形分を部分的に吸収するため、前記力が加わった部
分付近の弾力性の低下及び第２の樹脂の剥離を防止でき
る。As described above, in the present embodiment, according to claim 1, the first resin and the second resin are sequentially injected into the cavity 13 in the mold from the gates 15 and 18 to fill the cavity 13. It is molded, and the second from the lid 2 which is the first resin portion.
In the two-layer molded product having a large elasticity of the sealing material 3 which is the resin portion, since the lid body 2 has the through hole 6 corresponding to the overlapping portion with the sealing material 3, secondly, the crushing force is applied to the resin portion. When deformed, the through hole 6 is provided on the side opposite to the side to which the force is applied, and the through hole 6 escapes to partially absorb the deformation of the second resin portion. It is possible to prevent a decrease in elasticity in the vicinity and peeling of the second resin.
【００２３】また、このように本実施形態では、請求項
２に対応して、貫通孔６内に前記第２の樹脂部分たるシ
ール材３の嵌入部７が入り込んでいるから、貫通孔６の
開口側は規制されないため、シール材３の変形時の逃げ
となる。また、貫通孔６部分においても蓋体２にシール
材３が一体化される。Further, as described above, in this embodiment, since the fitting portion 7 of the seal material 3 as the second resin portion is inserted into the through hole 6 according to the second aspect, the through hole 6 Since the opening side is not regulated, it is a relief when the sealing material 3 is deformed. Further, the sealing material 3 is also integrated with the lid body 2 in the through hole 6 portion.
【００２４】また、このように本実施形態では、請求項
５に対応して、第１の樹脂部分が蓋体２であり、第２の
樹脂部分がエラストマーからなるシール材３であるか
ら、シール材３に力が加わっても、貫通孔６が逃げとな
り、蓋体２からシール材３が剥離することを防止でき、
シール性に優れた保護キャップ１を提供することができ
る。Further, as described above, in this embodiment, the first resin portion is the lid body 2 and the second resin portion is the sealing material 3 made of an elastomer, so that the sealing is performed. Even if a force is applied to the material 3, it is possible to prevent the through hole 6 from escaping, and prevent the seal material 3 from peeling from the lid body 2.
It is possible to provide the protective cap 1 having excellent sealing properties.
【００２５】図４は本発明の第２実施形態を示し、上記
第１実施形態と同一部分に同一符号を付し、その詳細な
説明を省略して詳述すると、この例では、インク出口11
1の先端縁112Ａが角型であり、先端縁112Ａに対応して
複数の貫通孔６を前記蓋体２に形成している。具体的に
は、先端縁112Ａは円形をなし、この円形に対応して３
つの貫通孔６を等間隔に配置している。FIG. 4 shows a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
One tip edge 112A is rectangular, and a plurality of through holes 6 are formed in the lid body 2 corresponding to the tip edge 112A. Specifically, the leading edge 112A has a circular shape, and the corresponding 3
One through hole 6 is arranged at equal intervals.
【００２６】そして、先端縁112Ａが角型で平面状をな
すため、シート材３に当たると、当たった部分には蓋板
部４に挟まれて圧縮される力が加わるが、先端縁112Ａ
に対応して複数の貫通孔６が形成されているため、圧縮
分を貫通孔６に逃がすことができる。Since the leading edge 112A is rectangular and has a planar shape, when it hits the sheet material 3, a force is applied to the hit portion so that it is sandwiched between the lid plate portions 4 and compressed.
Since a plurality of through holes 6 are formed corresponding to the above, the compressed amount can be released to the through holes 6.
【００２７】このように本実施形態では、請求項１，２
及び５に対応して、上記第１実施例と同様な作用・効果
を奏し、また、この例では、請求項３に対応して、貫通
孔６を複数有するから、シール材３に加わる力の箇所に
対応して、蓋体２に複数の貫通孔６を形成することによ
り、力を受けた際の変形をそれら貫通孔６により効果的
に吸収することができる。As described above, in this embodiment, the first and second aspects are set.
5 and 5, the same action and effect as those of the first embodiment can be obtained. Further, in this example, since a plurality of through holes 6 are provided corresponding to claim 3, the force applied to the sealing material 3 is By forming a plurality of through holes 6 in the lid body 2 corresponding to the locations, the deformation when a force is applied can be effectively absorbed by the through holes 6.
【００２８】図５〜図７は本発明の第３実施形態を示
し、上記各実施形態と同一部分に同一符号を付し、その
詳細な説明を省略して詳述すると、この例では、蓋体２
の内面に円形で断面略三角形の溝部21を形成し、この溝
部21と同一形状の溝部21Ａをシール材３の内面に形成し
ている。また、この例では、貫通孔６内に第２の樹脂部
分が入り込んでおらず、嵌入部７はない。FIGS. 5 to 7 show a third embodiment of the present invention, in which the same parts as those in the above-mentioned embodiments are designated by the same reference numerals, and detailed description thereof will be omitted. Body 2
A groove portion 21 having a circular shape and a substantially triangular cross section is formed on the inner surface of, and a groove portion 21A having the same shape as the groove portion 21 is formed on the inner surface of the seal material 3. Further, in this example, the second resin portion does not enter the through hole 6 and the fitting portion 7 does not exist.
【００２９】また、可動型12には移動型体22が型開閉方
向に移動可能に設けられ、この移動型体22は、蓋体２の
内面及びシール材３の内面を形成するものである。ま
た、移動型体22の先端面には、前記溝部21，21Ａを形成
する突起部23が形成されている。A movable die body 22 is provided on the movable die 12 so as to be movable in the die opening / closing direction, and the movable die body 22 forms the inner surface of the lid body 2 and the inner surface of the sealing material 3. Further, on the tip end surface of the movable die body 22, a projection portion 23 forming the groove portions 21 and 21A is formed.
【００３０】そして、まず、蓋体２を形成するには、図
６に示すように、移動型体22の先端面を蓋板部４の内面
に対応した位置で固定し、蓋体２に対応したキャビティ
13を形成する。この後、トンネルゲート15から第１の樹
脂をキャビティ13に充填し、樹脂が硬化した後、移動型
体22を後退（図中下側に移動）し、図７に示すように、
移動型体22の先端面をシート材３の内面に対応した位置
で固定する。これにより蓋体２の内面と移動型体22との
間にシート材３に対応したキャビティ13を形成し、ゲー
ト18から第２の樹脂を注入し、第２の樹脂が硬化した
後、型開きと離型を行い、型開きにより周壁部５とラン
ナー14とがトンネルゲート15にて切り離され、固定型11
から図示しない突き出し機構により保護キャップ１を離
型すると、ゲート18にて第２の樹脂が切り離される。First, in order to form the lid body 2, as shown in FIG. 6, the tip end surface of the movable die body 22 is fixed at a position corresponding to the inner surface of the lid plate portion 4, and the lid body 2 is supported. Cavity
Form 13. After this, the cavity 13 is filled with the first resin from the tunnel gate 15, and after the resin is cured, the movable mold body 22 is retracted (moved to the lower side in the drawing), and as shown in FIG.
The front end surface of the movable die body 22 is fixed at a position corresponding to the inner surface of the sheet material 3. As a result, a cavity 13 corresponding to the sheet material 3 is formed between the inner surface of the lid body 2 and the movable die body 22, a second resin is injected from the gate 18, and the second resin is cured, and then the mold is opened. Then, the peripheral wall 5 and the runner 14 are separated by the tunnel gate 15 by the mold opening, and the fixed mold 11
When the protective cap 1 is released from the mold by a protrusion mechanism (not shown), the second resin is separated at the gate 18.
【００３１】このように本実施形態では、請求項１に対
応して、上記第１実施例と同様な作用・効果を奏し、ま
た、このように本実施形態では、請求項４に対応して、
第１の樹脂部分たる蓋体２には第２の樹脂部分たるシー
ル材３との重なり箇所に溝部21を有し、この溝部21と同
一形状の溝部21Ａがシール材３の前記重なり箇所の他側
の面である内面に設けられているから、シール材３の他
の部材たる先端縁112が当たる箇所に溝部21Ａを形成
し、この溝部21Ａに対応して蓋体２にも溝部21が形成さ
れているから、インク出口111が溝部21に当り、両者の
密着性に優れ、また、シール材３は溝部21Ａも他の箇所
とほぼ同一厚さとなるから、成形時における樹脂の流動
性が良好となる。As described above, the present embodiment has the same function and effect as the first embodiment in accordance with claim 1, and thus, in this embodiment, in accordance with claim 4. ,
The lid 2 which is the first resin portion has a groove portion 21 at an overlapping portion with the seal material 3 which is the second resin portion, and the groove portion 21A having the same shape as the groove portion 21 has a groove portion 21A other than the overlapping portion where the seal material 3 overlaps. Since it is provided on the inner surface which is the side surface, the groove portion 21A is formed at a position where the other end of the sealing material 3, which is the leading edge 112, abuts, and the groove portion 21 is also formed on the lid body 2 corresponding to the groove portion 21A. Since the ink outlet 111 hits the groove portion 21 and the adhesion between them is excellent, and since the groove portion 21A of the sealing material 3 has almost the same thickness as other portions, the fluidity of the resin at the time of molding is good. Becomes
【００３２】なお、本発明は、前記実施例に限定される
ものではなく、種々の変形実施が可能である。例えば、
二層成形品は実施形態のものに限定されるものではな
く、各種の形状のものに適用可能である。また、金型は
実施形態に示したコアバック式以外でもキャビティバッ
ク式でもよい。The present invention is not limited to the above embodiment, but various modifications can be made. For example,
The two-layer molded product is not limited to that of the embodiment and can be applied to various shapes. Further, the mold may be of a cavity back type or a core back type other than that shown in the embodiment.
【００３３】[0033]
【発明の効果】請求項１の発明は、第１の樹脂と第２の
樹脂とを順次金型内のキャビティにゲートから注入して
充填することにより成形され、前記第１の樹脂部分より
第２の樹脂部分の弾性が大きい二層成形品において、前
記第１の樹脂部分は第２の樹脂部分との重なり箇所に対
応して貫通孔を有するものであり、第２の樹脂部分に力
が加わる二層成形品において、第２の樹脂部分の部分的
な弾力性の低下と剥離を防止できる。According to the first aspect of the present invention, the first resin and the second resin are molded by sequentially injecting the first resin and the second resin into the cavity in the mold from the gate to fill the cavity. In the two-layer molded article in which the second resin portion has a large elasticity, the first resin portion has a through hole corresponding to the overlapping portion with the second resin portion, and the force is exerted on the second resin portion. In the additional two-layer molded product, it is possible to prevent the partial decrease in elasticity and peeling of the second resin portion.
【００３４】また、請求項２の発明は、請求項１の効果
に加えて、前記貫通孔内に前記第２の樹脂部分が入り込
んでいるものであり、貫通孔の開口側が規制されないか
ら、第２の樹脂部分の変形時の逃げとなり、また、貫通
孔部分においても第２の樹脂部分が一体化される。In addition to the effect of claim 1, the invention of claim 2 is such that, in addition to the effect of claim 1, the second resin portion is inserted into the through hole, and the opening side of the through hole is not regulated. It becomes an escape when the second resin portion is deformed, and the second resin portion is also integrated in the through hole portion.
【００３５】また、請求項３の発明は、請求項１又は２
の効果に加えて、前記貫通孔を複数有するものであり、
第２の樹脂部分が力を受けた際の変形を複数の貫通孔に
より効果的に吸収することができる。The invention of claim 3 is the same as claim 1 or 2.
In addition to the effect of, having a plurality of the through holes,
The deformation when the second resin portion receives a force can be effectively absorbed by the plurality of through holes.
【００３６】また、請求項４の発明は、請求項１又は２
の効果に加えて、第１の樹脂部分には第２の樹脂部分と
の重なり箇所に溝部を有し、この溝部と同一形状の溝部
が前記第２の樹脂部分の前記重なり箇所の他側に設けら
れているものであり、第１と第２の樹脂の密着性に優
れ、また、第２の樹脂部分は溝部も他の箇所とほぼ同一
厚さとなるから、成形時における樹脂の流動性が良好と
なる。The invention of claim 4 is the same as claim 1 or 2.
In addition to the effect of the above, the first resin portion has a groove portion at an overlapping portion with the second resin portion, and the groove portion having the same shape as this groove portion is provided on the other side of the overlapping portion of the second resin portion. Since the first resin and the second resin have excellent adhesiveness, and the groove portion of the second resin portion has almost the same thickness as other portions, the fluidity of the resin during molding is improved. It will be good.
【００３７】また、請求項５の発明は、請求項１〜４の
効果に加えて、前記第１の樹脂部分が蓋体であり、前記
第２の樹脂部分がエラストマーからなるシール材である
から、シール材に力が加わっても、貫通孔が逃げとな
り、蓋体からシール材が剥離することを防止できる。Further, in addition to the effects of claims 1 to 4, the invention of claim 5 is such that the first resin portion is a lid and the second resin portion is a sealing material made of an elastomer. Even if a force is applied to the sealing material, it is possible to prevent the through hole from escaping and peeling the sealing material from the lid.
【図１】本発明の第１実施形態を示す二層成形品の断面
図である。FIG. 1 is a cross-sectional view of a two-layer molded product showing a first embodiment of the present invention.
【図２】同上、第１の樹脂部分の成形を説明する金型の
断面図である。FIG. 2 is a sectional view of a mold for explaining the molding of the first resin portion.
【図３】同上、第２の樹脂部分の成形を説明する金型の
断面図である。FIG. 3 is a sectional view of a mold for explaining the molding of the second resin portion of the above.
【図４】本発明の第２実施形態を示す二層成形品の図で
あり、図４（Ａ）は断面図、図４（Ｂ）は平面図であ
る。FIG. 4 is a diagram of a two-layer molded product showing a second embodiment of the present invention, FIG. 4 (A) is a sectional view, and FIG. 4 (B) is a plan view.
【図５】本発明の第３実施形態を示す二層成形品の断面
図である。FIG. 5 is a cross-sectional view of a two-layer molded product showing a third embodiment of the present invention.
【図６】同上、第１の樹脂部分の成形を説明する金型の
断面図である。FIG. 6 is a sectional view of a mold for explaining the molding of the first resin portion of the above.
【図７】同上、第２の樹脂部分の成形を説明する金型の
断面図である。FIG. 7 is a sectional view of a mold for explaining the molding of the second resin portion of the above.
【図８】従来の二層成形品の断面図である。FIG. 8 is a cross-sectional view of a conventional two-layer molded product.
【図９】同上、開口に取り付けた状態の二層成形品の断
面図である。FIG. 9 is a sectional view of the two-layer molded product attached to the opening of the same.
１ 保護キャップ（二層成形品） ２ 蓋体 ３ シール材 ６ 貫通孔 ７ 嵌入部 13 キャビティ 15 トンネルゲート（ゲート） 18 ゲート 21 溝部 21Ａ 溝部 111 インク出口 1 Protective cap (two-layer molded product) 2 lid 3 sealant 6 through holes 7 Fitting part 13 cavities 15 tunnel gate (gate) 18 gates 21 groove 21A groove 111 ink outlet
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｌ 31:56 Ｂ２９Ｌ 31:56 Ｆターム(参考） 3E084 AB01 BA01 CA01 CB10 CC03 DA01 DC03 FA09 HA02 HB03 HC03 HD01 4F100 AK01A AK01B AL09B BA02 DA03 DC11A DD05A DD05B EH362 GB18 JK06 JK07 JK07B JL11 4F206 AA45 AG03 AH57 JA07 JB28 JL02 JN12 JN14 JN22 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B29L 31:56 B29L 31:56 F term (reference) 3E084 AB01 BA01 CA01 CB10 CC03 DA01 DC03 FA09 HA02 HB03 HC03 HD01 4F100 AK01A AK01B AL09B BA02 DA03 DC11A DD05A DD05B EH362 GB18 JK06 JK07 JK07B JL11 4F206 AA45 AG03 AH57 JA07 JB28 JL02 JN12 JN14 JN22
Claims (5)
のキャビティにゲートから注入して充填することにより
成形され、前記第１の樹脂部分より第２の樹脂部分の弾
性が大きい二層成形品において、前記第１の樹脂部分は
第２の樹脂部分との重なり箇所に対応して貫通孔を有す
ることを特徴とする二層成形品。1. A first resin and a second resin are molded by sequentially injecting them into a cavity in a mold from a gate to fill the cavity, and the elasticity of the second resin portion is higher than that of the first resin portion. A large two-layer molded article, wherein the first resin portion has a through hole corresponding to the overlapping portion with the second resin portion.
り込んでいることを特徴とする請求項１記載の二層成形
品。2. The two-layer molded product according to claim 1, wherein the second resin portion is inserted into the through hole.
る請求項１又は２記載の二層成形品。3. The two-layer molded product according to claim 1, which has a plurality of the through holes.
重なり箇所に溝部を有し、この溝部と同一形状の溝部が
前記第２の樹脂部分の前記重なり箇所の他側に設けられ
ていることを特徴とする請求項１又は２記載の二層成形
品。4. The first resin portion has a groove portion at an overlapping portion with the second resin portion, and a groove portion having the same shape as the groove portion is provided on the other side of the overlapping portion of the second resin portion. The two-layer molded article according to claim 1 or 2, characterized in that
第２の樹脂部分がエラストマーからなるシール材である
ことを特徴とする請求項１〜４のいずれか１項に記載の
二層成形品。5. The two-component structure according to claim 1, wherein the first resin portion is a lid and the second resin portion is a sealing material made of an elastomer. Layer molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002124881A JP2003311885A (en) | 2002-04-25 | 2002-04-25 | Two-layered molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002124881A JP2003311885A (en) | 2002-04-25 | 2002-04-25 | Two-layered molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003311885A true JP2003311885A (en) | 2003-11-06 |
Family
ID=29539808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002124881A Abandoned JP2003311885A (en) | 2002-04-25 | 2002-04-25 | Two-layered molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003311885A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030330A (en) * | 2005-07-27 | 2007-02-08 | Pentel Corp | Mold device and gripping member molded by mold device |
| JP2008030802A (en) * | 2006-07-28 | 2008-02-14 | Key Tranding Co Ltd | Container having cap |
| JP2009029512A (en) * | 2007-07-26 | 2009-02-12 | Jaegu Moon | Container lid integrally formed with packing with wing |
| JP2016168731A (en) * | 2015-03-12 | 2016-09-23 | セイコーエプソン株式会社 | Plug member, and liquid storage body unit |
| JP2018103497A (en) * | 2016-12-27 | 2018-07-05 | ダイハツ工業株式会社 | Method for manufacturing multilayer member |
-
2002
- 2002-04-25 JP JP2002124881A patent/JP2003311885A/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030330A (en) * | 2005-07-27 | 2007-02-08 | Pentel Corp | Mold device and gripping member molded by mold device |
| JP4525512B2 (en) * | 2005-07-27 | 2010-08-18 | ぺんてる株式会社 | Mold apparatus for forming a gripping member |
| JP2008030802A (en) * | 2006-07-28 | 2008-02-14 | Key Tranding Co Ltd | Container having cap |
| JP2009029512A (en) * | 2007-07-26 | 2009-02-12 | Jaegu Moon | Container lid integrally formed with packing with wing |
| JP2016168731A (en) * | 2015-03-12 | 2016-09-23 | セイコーエプソン株式会社 | Plug member, and liquid storage body unit |
| JP2018103497A (en) * | 2016-12-27 | 2018-07-05 | ダイハツ工業株式会社 | Method for manufacturing multilayer member |
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