CN1134386A - Closed container and its producing method - Google Patents
Closed container and its producing method Download PDFInfo
- Publication number
- CN1134386A CN1134386A CN 96101910 CN96101910A CN1134386A CN 1134386 A CN1134386 A CN 1134386A CN 96101910 CN96101910 CN 96101910 CN 96101910 A CN96101910 A CN 96101910A CN 1134386 A CN1134386 A CN 1134386A
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- vessel
- elastic component
- lid
- container
- leakproof tank
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- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
The invention relates to a closed container and a manufacturing method for the container. The container consists of a container body and a cover which are formed by hard material. An elastic component formed by a thermoplastic elastomer is integrally formed near the top part of a side wall of the container body and /or a portion of a cover jointed near the top part and the elastic component is formed by adopting inserting forming or twice forming mode, thereby providing a closed container with excellent anti-pollution performance and the manufacturing method of the container, which avoid the trouble of needing to embed an annular gasket when in use for each time.
Description
The present invention relates to leakproof tank, exactly relate to the no leaks such as liquid that can make vessel and cover driving fit, hold, leakproof tank that stain resistance is good and manufacture method thereof.
In the past, as a kind of plastics of synthetic resin, because of its low price, easily be shaped, reason such as no burn into colour is good, often be used to make various containers.Class at these containers is called in the casing shape containers such as making things convenient for box or lunch box, has the lid that cooperates with vessel usually, and will make the installation of lid and unload easily, and people have done many effort for this reason.
For example, for lunch box, as described later shown in Fig. 4 a, the b, for holding the food of fluents such as containing soup juice, flavoring, make it become complete closed, embed the ring spacer 5 that constitutes by silaatic etc. at the junction surface of vessel 1 and lid 2, in addition, on lid 2, be provided with and can be on demand tighten up member 3, tighten up the junction surface driving fit that member 3 makes vessel 1 and lid 2, prevent that contained object from leaking with this with what lid 2 and vessel 1 tightened up.
In addition, in such as leakproof tanks such as water drum, kettle, thermal bottle, pots,, be set to keep the leak free flexible sealing component usually between the two for making vessel and lid driving fit.
In above-mentioned traditional leakproof tank, because of ring spacer 5 is required to have suitable elasticity, and make by rubber, but owing to be difficult to rubber and thermoplastic base resin are formed one, thereby relative vessel 1 or cover 2 shaping, need be shaped in addition and add sulphur it and make, in addition, need to carry out the shaping of vessel 1 on the top side wall of vessel 1, and need when existing in each use container above-mentioned packing ring 5 is embedded loaded down with trivial details problem in the use in the above-mentioned groove 6 according to the groove 6 that above-mentioned packing ring 5 is embedded is set.
In addition, also exist, rest in the groove 6 thereby contain food debris owing to needing diameter formation littler than the diameter of groove 6 with above-mentioned packing ring 5, very unhygienic, and the very difficult problem that contaminated groove inside is cleaned up fully.
Therefore, the object of the present invention is to provide the trouble that needs in the time of saving each the use the packing ring embedding, and the good leakproof tank of stain resistance.
According to leakproof tank of the present invention and manufacture method thereof for achieving the above object, this leakproof tank comprises vessel and the lid that is made of hard material, it is characterized in that, near the vessel top side wall, or with this top near on the cover that engages, or form the elastic component that constitutes by thermoplastic elastomer on these two parts.
According to the present invention, by according near the vessel top side wall, or with this top near on the cover that engages, or form the elastic component that constitutes by thermoplastic elastomer with vessel or lid on these two parts, thereby the trouble that needs when saving each the use the packing ring embedding is provided, and the good leakproof tank of stain resistance.
Especially, by vessel and/or lid are used the acrylic resin moulding, and, elastic component fills up thermoplastic elastic or styrene series thermoplastic elastomer moulding with polyene system, thereby make vessel or lid and elastic component have good adaptation, and these elastic components hold thing for liquid state and have good leakproofness and stain resistance.
Simple declaration to accompanying drawing.
Fig. 1 is the figure of graphic representation leakproof tank embodiment of the present invention,
Fig. 2 is the figure of graphic representation leakproof tank embodiment of the present invention,
Fig. 3 is the diagrammatic sketch of explanation manufacture method of the present invention,
Fig. 4 is the figure of graphic representation tradition leakproof tank,
Accompanying drawing referring now to expression an embodiment of the present invention further specifies the present invention.
Fig. 1 a for expression as the lunch box of airtight container one embodiment formula of the present invention, Fig. 1 b～g represents the some different embodiment that dissect along the A-A method.
The utility model lunch box is at vessel 1, lid 2 and be provided with between the two as required and tighten up member 3, these are the same substantially with traditional lunch box, but present embodiment is not limited to the lunch box of shape shown, the present invention only limit to the elastic component that constitutes by thermoplastic elastomer be formed near the part vessel top side wall or with this top near on the cover that engages, or be formed on these two parts, but being not limited to lunch box, also can be container for example kettle, kettle, thermal bottle, the pot etc. with Any shape.
The vessel 1 of above-mentioned lunch box, lid 2 and tighten up member 3 and be suitable for rigid plastic and adopt injection moulding to form.
Shown in the feature of this form of implementation and Fig. 1 b～g, be that elastic component 4 is formed on engaging on the part of vessel 1 and lid 2.Fig. 1 b is expression with on the integrally formed top side wall face of imbedding vessel 1 of elastic component 4, Fig. 1 c is that expression is formed on elastic component 4 on the top side wall of vessel 1, Fig. 1 d is that expression is embedded in elastic component 4 on the top side wall of vessel 1 respectively and on lid 2 parts that engage with this top side wall in one piece, Fig. 1 e represents elastic component 4 is imbedded in one piece the inboard of the top side wall of vessel 1, Fig. 1 f represents respectively elastic component 4 to be on the top side wall that invaginated type is embedded in vessel 1 in one piece, elastic component 4 is on the part that convex shape is embedded in the lid 2 that engages with this elastic component 4 in one piece, above Fig. 1 g represents to be formed on 4 one-tenth convex shapes of elastic component near the top side wall of vessel 1, make and cover 2 side and engage with elastic component 4.In a word, above-mentioned each example overlaps on the vessel 1 will covering 2, makes both engage the all-in-one-piece occasion with tightening up member 3 as required, can make both contact parts sealings with the elastic force of elastic component 4, contains fraction in preventing fully and leaks.
Form of implementation shown in Figure 2 is that expression is applicable to the example that covers tea caddy shape container with the present invention, and the vessel 21 of this container is the metallic cylinder, will be bent to the protuberance 22 that section is an annular arrangement by this cylinder top of metal sheet system to the inside.In addition, the lid body 24 that constitutes by rigid plastic of lid 23 and formed by the elastic component 25 that constitutes by thermoplastic elastomer that is formed on this lid body lower inside.When above-mentioned lid 23 is fashionable to vessel 21 inner caps, elastic component 25 is pressed into the inside of vessel 21, make with the protuberance 22 that on vessel 21 tops, forms to contact, with the elasticity of elastic component 25 container is sealed fully.
Above-mentioned example is a cylindrical container, yet, even at for example thermal bottle, screw in the container of lid formula, for with the sealing of thermal bottle body, also be in the bottom of screw-in lid, embed and the same O shape rubber system packing ring shown in Figure 4, but by the present invention being applicable to such thermal bottle, can be with above-mentioned the same with packing ring and lid body formation one.
The hard material that uses among the present invention for example also can be metal, chinaware, pottery, stupalith etc., constitute by rigid plastic but preferably make at least with the vessel of elastic component formation one and one of them in the lid, can use general rigid plastic such as polyethylene, polypropylene, polystyrene, polyester, polyamide as such rigid plastic, the rigid plastic of particularly suitable is an acrylic resin.Employed acrylic resin is based on propylene monomer among the present invention, can contain the polymer that a small amount of other combined polymerization alkene forms as the combined polymerization composition, in the past, be extensive use of the raw material of various fibers as various shaping things, these known acrylic resins can be directly used in the present invention.
In addition, the thermoplastic elastomer that uses among the present invention has the elasticity the same with rubber at normal temperatures, and because of thermoplastic has flowing power, promptly be shown as thermoplastic material, the polyene that for example can enumerate polyene by the film form and be rubber (being mainly EPR-EPDM) and hard sheet form is both crosslinked configuration bodies of forming through chemical bond of resin (being mainly PP), polyene based thermoplastic elastic bodys such as polypropylene/ethylene acrylic rubber compound, the polymeric fast shape polymer of styrene polymerization body and poly-butadiene (or polyisoprene), the polymeric hydrogen additive of these little bulks, as polystyrene, the polystyrene thermoplastic elastomer of the poly-block little polymer of (ethene-butylene)-polystyrene (SEBS), polyester system, polyester is a fritter shape polymer etc., and these materials all are the materials that can obtain from the market.
In the combination of aforesaid thermoplastic elastomer and rigid plastic, the combination of particularly suitable, as rigid plastic is acrylic resin, as thermoplastic elastomer is polyene based thermoplastic elastic body, in addition, the polystyrene thermoplastic elastomer for example is composites such as polystyrene, poly-butadiene, polystyrene fritter shape aggressiveness and SEBS (the Japanese trade mark of above article and the name of manufacturer thereof are omitted).
Aforesaid leakproof tank of the present invention can be shaped and twice manufacturing process manufacturing with known insertion in the past.About molding condition, for example, can be identical with traditional general insertion shaping or twice molding condition that " up-to-date injection molding technology and practical application thereof " (three smooth press) upward puts down in writing.
Leakproof tank of the present invention is being inserted moulding or twice moulding occasion, thermoplastic elastomer is shaped earlier, then carrying out rigid plastic and be shaped, yet rigid plastic is shaped earlier, then carrying out thermoplastic elastomer and be shaped.In inserting shaping, be suitable at first with the rigid plastic of fusion to for example have do not contain just like the metal die of the 4 shape cavitys of elastic component shown in Fig. 1～g in injection moulding, and formation vessel and lid, then this shaped object is inserted in the metal die with shown in Fig. 1 b～g container or lid global shape cavity, then the thermoplastic elastomer of fusion is vacated part (forming the part of elastic component 4) injection moulding to this, thereby form elastic component 4.
Twice shaping occasion, for example, carry out global formation as shown in Figure 3, Fig. 3 a institute example has the 1st metal paattern 31 and the 2nd metal paattern 32, makes it releasably keep intimate engagement with die joint 33.On the 1st metal paattern 31, has the recess of representing with curved surface 34, in addition, below the 2nd metal paattern 32, have the protuberance of representing with curved surface 35, have the cavity 36 identical with the formed body profile by described the 1st metal paattern 31 and the 2nd metal paattern 32 being harmonious face-to-face forming.In addition, on the 2nd metal paattern 32, resin inlet 37 is set.At this state, the rigid plastic with fusion shown in Fig. 3 b injects cavity 36 and forms vessel 38 from inlet 37.
Behind such formation vessel 38, make the 1st metal paattern 31 revolutions shown in Fig. 3 a, the b, shown in Fig. 3 c, d, make the 1st metal paattern 31 and other the 2nd metal paattern 32 ' intimate engagement.Between the commutation period that carries out this 2nd metal paattern, make the shaped object that constitutes by above-mentioned rigid plastic be cooled to a certain degree solidify, generally do not have problems making on this metal paattern length of swap time.
At state shown in Fig. 3 c, on the sidewall upper face of the vessel 38 that constitutes by rigid plastic, form space 39, shown in Fig. 3 d, thermal plastic elastomer's fused mass is injected in space 39 from inlet 40, thereby form elastic component 41, and form integrated with vessel 38.Then, after forming metal mould is cooled to necessary temp, be carried out to the body demoulding, thereby on the sidewall upper face of vessel 38, obtain the elastic component 41 of the required form of formation one.
Above-mentioned example is an example of center steering mode, in addition, also has the center to send the commentaries on classics mode back to, and much less, twice molding mode in addition is all applicable to the present invention.In addition, in above-mentioned example, be that the order by rigid plastic one thermoplastic elastomer forms.Yet also can make the shaping order in contrast.
Below, further the present invention is specified with specific embodiment.
Now use twice shaping machine of DC100-200 type (day smart resin industry strain commercial firm system) as injection machine, the acrylic resin that melts to 200 ℃～230 ℃ of temperature to having the regulation cavity shape, being heated to (combination of the 1st metal paattern 31 and the 2nd metal paattern 32 shown in Fig. 3 a) injection in the metal paattern A of 50 ℃ of temperature.In view of the above, can form lunch box vessel 38 by acrylic resin system.
Next, in the vessel that makes shaping equal state when keeping and inject metal paattern 31 revolutions are moved, make move and and additional metals mould 32 ' intimate engagement, form the metal paattern B of state shown in Fig. 3 c, SEBS (at the styrene polymerization body and the at random little polymeric fritter shape polymer of ethene-butylene of 180 ℃ of temperature～240 ℃ of following fusions) from metal paattern 32 ' inlet 40 be injected in the cavity 39 of top side wall of lunch box vessel 38, form elastic component 41.Then make be cooled to set point of temperature in the metal paattern B after, open metal paattern, obtain to have the lunch box vessel 1 of sidewall structure shown in Fig. 1 c.
In this plastic container body, owing to, both material fusions are engaged be completed into one, and can not make it to peel off in acrylic resin partial sum SEBS boundary portion partly.
In addition, fish etc. is boiled food put into the lunch box body of making as described above, the lid that closes, and tighten up airtight with tightening up member.The phenomenon of leakage does not take place all the time at this state.In addition, the elastic component part of vessel is soaked about week back taking-up in boiling the soup juice of thing,, stain can be removed fully, even also be difficult to recognize the stain of soup juice at the boundary of side-wall material and elastomeric material with wet tissue wiping place.
Inserting the shaping occasion, use general injection machine (the KC-140 type A that the ironworker of Kawaguchi is made), as metal paattern A, is the melt polypropylene resin operation rigid plastic injection pressure under 180 ℃～250 ℃ of temperature 40～100kg/ with the 1st metal paattern 31 shown in Fig. 3 a and metal paattern 32
2, injection forms vessel 38 in remaining on the cavity 36 that temperature is 50 ℃ of metal paattern A.When being cured to the shaped object taking-up, after the indeformable temperature, open metal paattern A, shaped object 38 is taken out from metal paattern A, thus the shaping of end vessel 38.
Next, on the general injection machine of ready metal paattern 31 and 32 ' be placed on use shown in Fig. 3 c (the KC-140 type B that the ironworker of Kawaguchi is made), the above-mentioned vessel that has been shaped 38 is inserted in the recess of metal paattern 31, make then and metal paattern 32 ' combination, metal paattern B is sealed, the SEBS (Sumitomo TPE-SB) that is the fusion under 180 ℃～250 ℃, be 30～80kg/cm in temperature with injection pressure
2Be injected in the cavity 39 from inlet 40, thereby form elastic component 41.After the shaped object that forms one solidifies in metal paattern B, open metal paattern B, take out the shaped object of one.
In this plastic container body and lid, because in the boundary portion of acrylic resin partial sum SEBS part, the common fusion of both materials is engaged and be completed into integratedly, thereby can not make it to peel off.Therefore, the also the same advantage of this lunch box with excellent sealing and stain resistance with the foregoing description.
In addition, even in above-mentioned two embodiment, use polyene based thermoplastic elasticity to replace above-mentioned SEBS, also can obtain equifinality.
According to the present invention as mentioned above, by near the part vessel top side wall or with this top near on the cover that joins, or formation and vessel or lid constitute the elastic component that is made of thermoplastic elastomer of one on above-mentioned two parts, and the trouble and the good leakproof tank of stain resistance of embedding packing ring when avoiding at every turn using just can be provided.
Especially, when passing through to form vessel, lid and elastic component with acrylic resin, polyene based thermoplastic elastic body or styrene series thermoplastic elastomer respectively, can make the adaptation of vessel or lid and elastic component good, and it is also very good to make these elastic component phase liquid towardses hold the leak tightness and the stain resistance of thing.
Claims (5)
1. leakproof tank, form by vessel and lid that hard material constitutes, it is characterized in that, near the vessel top side wall or with this top side wall near form the elastic component that constitutes by thermoplastic elastomer on the cover that engages or this two parts.
2. leakproof tank according to claim 1 is characterized in that, forms described elastic component with inserting shaping or twice shaping.
3. leakproof tank according to claim 1 is characterized in that, described vessel and or the lid constitute by acrylic resin, described elastic component is made of polyene based thermoplastic elastic body or styrene series thermoplastic elastomer.
4. leakproof tank according to claim 1 is characterized in that, described container is the container that holds food.
5. according to the manufacture method of the described leakproof tank of claim 1, described container is made up of vessel and lid that hard material constitutes, carry out the shaping of vessel and/or lid with injection moulding method by rigid plastic, it is characterized in that, on the junction surface of described vessel and/or lid, form elastic component with inserting shaping or twice forming mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2577995 | 1995-01-23 | ||
| JP25779/1995 | 1995-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1134386A true CN1134386A (en) | 1996-10-30 |
| CN1077539C CN1077539C (en) | 2002-01-09 |
Family
ID=12175330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96101910A Expired - Fee Related CN1077539C (en) | 1995-01-23 | 1996-01-23 | Closed container and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1077539C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106413898A (en) * | 2014-12-10 | 2017-02-15 | 神户仿生机械株式会社 | Sample housing/storage container |
| CN114889976A (en) * | 2022-07-14 | 2022-08-12 | 苏州雷贝德精密模具有限公司 | Bottle cap and forming method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204972U (en) * | 1987-03-24 | 1988-01-27 | 韩英斌 | Sealed lunch-box |
| CN2129743Y (en) * | 1992-09-23 | 1993-04-14 | 张志强 | Vacuum fresh keeping box |
-
1996
- 1996-01-23 CN CN96101910A patent/CN1077539C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106413898A (en) * | 2014-12-10 | 2017-02-15 | 神户仿生机械株式会社 | Sample housing/storage container |
| US10549280B2 (en) | 2014-12-10 | 2020-02-04 | Kobe Bio Robotix Co, Ltd. | Sample storage tube |
| CN114889976A (en) * | 2022-07-14 | 2022-08-12 | 苏州雷贝德精密模具有限公司 | Bottle cap and forming method thereof |
| CN114889976B (en) * | 2022-07-14 | 2022-10-11 | 苏州雷贝德精密模具有限公司 | Bottle cap and forming method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1077539C (en) | 2002-01-09 |
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