JPH0235652B2 - - Google Patents
Info
- Publication number
- JPH0235652B2 JPH0235652B2 JP56166244A JP16624481A JPH0235652B2 JP H0235652 B2 JPH0235652 B2 JP H0235652B2 JP 56166244 A JP56166244 A JP 56166244A JP 16624481 A JP16624481 A JP 16624481A JP H0235652 B2 JPH0235652 B2 JP H0235652B2
- Authority
- JP
- Japan
- Prior art keywords
- urethane foam
- outer box
- spacer
- foam
- molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000006260 foam Substances 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 16
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1228—Joining preformed parts by the expanding material
- B29C44/1233—Joining preformed parts by the expanding material the preformed parts being supported during expanding
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- 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
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は硬質ウレタンフオームを断熱材として
利用した発泡断熱容器の断熱加工用の成形装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molding apparatus for heat-insulating processing of foamed heat-insulating containers using hard urethane foam as a heat-insulating material.
硬質ウレタンフオームは遮熱性能の良い断熱壁
を現場発泡によつて形成でき、かつ、該ウレタン
フオームが各種の内箱や外箱壁材と比較的良い接
着能力を有しているため、冷蔵庫やシヨーケース
等の断熱材として広く使用されている。 Rigid urethane foam can be used to form insulating walls with good heat shielding performance by on-site foaming, and has relatively good adhesion ability to various inner and outer box wall materials, making it ideal for refrigerators and other products. Widely used as a heat insulator for housing cases, etc.
しかし、材料の如何を問わず比較的良い接着性
を有しているというウレタンフオームの性質は該
ウレタンフオームの成形時に、後加工のための空
間を確保するような場合には欠点ともなるもので
ある。 However, the property of urethane foam, which has relatively good adhesion to any material, also has a drawback when it is necessary to secure space for post-processing when molding the urethane foam. be.
例えば、図に示すような水タンクを製造する場
合に、まず、ポリエチレンやポリプロピレン等の
樹脂を用いてブロー成形された小容器１を作り、
該小容器１と上部外箱２とを組み合わせ、これに
よつてできる空間及び小容器１の下部と成形型３
空間にウレタン原液と発泡剤とを注入して発泡さ
せ、これらの空間部に硬質ウレタンフオームの断
熱壁４を形成し、次いで、別途に成形された下部
外箱５を、該外箱の上縁６が上部外箱の下縁７と
断熱壁４との間に挿入されるようにして組み合わ
せている。 For example, when manufacturing a water tank as shown in the figure, first, a small container 1 is made by blow molding using resin such as polyethylene or polypropylene.
The small container 1 and the upper outer box 2 are combined, and the space created thereby, the lower part of the small container 1, and the mold 3
A urethane stock solution and a foaming agent are injected into the space and foamed to form a heat insulating wall 4 of hard urethane foam in these spaces, and then a separately molded lower outer box 5 is attached to the upper edge of the outer box. 6 is inserted between the lower edge 7 of the upper outer box and the heat insulating wall 4.
而して、外箱の上縁６が挿入される隙間を上述
したような発泡断熱加工時に作るには、第２図の
ように、発泡成形型８，８′，８″内にスペーサー
９，９′を挿入し、発泡原液注入機１０から発泡
剤及びウレタン原液を注入して発泡硬化させた
後、成形型８，８′…を図の仮想線のように外し、
更にスペーサ９，９′を外して隙間を確保しなけ
ればならない。 Therefore, in order to create a gap into which the upper edge 6 of the outer box is inserted during the foam insulation processing as described above, spacers 9, 9' is inserted, and the foaming agent and urethane stock solution are injected from the foaming stock injection machine 10 to foam and harden, and then the molds 8, 8'... are removed as shown by the imaginary lines in the figure.
Furthermore, it is necessary to remove the spacers 9 and 9' to ensure a gap.
しかし、発泡し、硬化した後の硬質ウレタンフ
オームは小容器１や外箱２と密着して良好な断熱
壁を形成するのみならず。成形型８，８…やスペ
ーサ９，９′とも密着しているため、例えば、上
述したような下部外箱挿入用の隙間を二次加工な
して恒常的に確保するのは容易でない。 However, after foaming and hardening, the hard urethane foam not only adheres closely to the small container 1 and the outer box 2 to form a good heat insulating wall. Since the molds 8, 8, . . . and the spacers 9, 9' are in close contact with each other, it is not easy to permanently secure a gap for inserting the lower outer box as described above without secondary processing, for example.
成形型３は、第２図の仮想線に示すように硬質
ウレタンフオームの壁面に対し引張方向の力をか
ければ剥離されるのであるが、スペーサ９，９′
は成形硬化後の壁面に対してせん断方向の力をか
けつつ取り外す必要があるからである。 The mold 3 is peeled off by applying a tensile force to the wall surface of the hard urethane foam as shown by the imaginary line in FIG. 2, but the spacers 9, 9'
This is because it is necessary to remove the molded and hardened wall while applying a force in the shearing direction to the wall surface.
このような点に鑑み成された本発明では、ニト
リブタジエンゴム（以下NBRと記す）とクロロ
プレンゴム（以下CRと記す）とを混合した素材
を硬質ウレタンフオームの成形用スペーサとし、
これにより、硬質ウレタンフオームの加工現場で
の成型装置として良い成果を収めたものである。 In the present invention, which was created in view of these points, a spacer for molding a hard urethane foam is made of a material made of a mixture of nitributadiene rubber (hereinafter referred to as NBR) and chloroprene rubber (hereinafter referred to as CR),
This has achieved good results as a molding device for hard urethane foam processing sites.
すなわち、スペーサは、ウレタン発泡時の液圧
による漏れを防ぐために、或程度の弾性を有し、
シール機能を持つことが必要であると同時に、発
泡後はこの弾性を利用してせん断方向の取り外し
を行なえるようにするばかりでなく、発泡後の壁
面とスペーサとの剥離を容易にする離形剤に対す
る耐性も有しなければならない。 That is, the spacer has a certain degree of elasticity to prevent leakage due to the hydraulic pressure during urethane foaming.
It is necessary to have a sealing function, and at the same time, after foaming, it is necessary to utilize this elasticity to not only make it possible to remove the spacer in the shear direction, but also to make it easier to separate the wall surface and spacer after foaming. It must also be resistant to chemicals.
而して、本発明のように、NBRとCRとを配合
比１対１で混合して作つた素材を元にしたスペー
サは炭化水素系の離型剤を塗布して発泡成形型に
使用しても、シリコンゴムを用いて作つたスペー
サのような膨潤や変形は発生せず、又、ポリエチ
レンやポリプロピレンを用いたスペーサのように
弾性を欠如することもないので発泡加工時の圧力
に抗して充分なシール性を確保できるものであ
る。 Therefore, as in the present invention, a spacer made from a material made by mixing NBR and CR at a ratio of 1:1 is coated with a hydrocarbon-based mold release agent and used in a foam mold. However, unlike spacers made from silicone rubber, they do not swell or deform, nor do they lack elasticity like spacers made from polyethylene or polypropylene, so they can withstand pressure during foam processing. This ensures sufficient sealing performance.
尚、スペーサ９，９′には、例えば、第２図に
示すように、上側外箱の下縁７と係合する溝１
１，１１′が形成され、かつ、成形型８，８′には
スペーサ９，９′の嵌合部１２，１２′が設けられ
ている。 Incidentally, the spacers 9, 9' have, for example, grooves 1 that engage with the lower edge 7 of the upper outer box, as shown in FIG.
1 and 11' are formed, and fitting portions 12 and 12' for spacers 9 and 9' are provided in the molds 8 and 8'.
このように、本発明の発泡断熱容器の成形装置
は、硬質ウレタンフオームの成形用型と組み合わ
せ使用するスペーサをNBRとCRとの混合物で構
成することにより、発泡加工時のシール性、発泡
加工後の取り外しを容易にすると共に、離型剤に
対する耐性も確保して発泡断熱容器の成形加工現
場において効率の良い製造作業を可能にしたもの
である。 As described above, the foam insulation container molding device of the present invention uses a spacer made of a mixture of NBR and CR to be used in combination with a rigid urethane foam mold. In addition to making it easy to remove the mold, it also ensures resistance to mold release agents, making it possible to perform efficient manufacturing operations at molding and processing sites for foam insulation containers.
第１図は本発明による発泡断熱容器の完成品の
一例を示す縦断面図、第２図は同じく成型加工装
置の使用状態を示す縦断面図である。
３，８，８′，８″……成形型、９，９′……ス
ペーサ。
FIG. 1 is a longitudinal cross-sectional view showing an example of a completed foamed heat-insulating container according to the present invention, and FIG. 2 is a longitudinal cross-sectional view showing a state in which the molding apparatus is used. 3, 8, 8', 8''...Mold, 9, 9'...Spacer.
Claims (1)
ニトリルブタジエンゴムとクロロプレンゴムとを
混合したゴムを用いて形成されていることを特徴
とする発抱断熱容器の成形装置。1 The spacer for molding of hard urethane foam is
1. A molding device for a thermally insulated container, characterized in that it is formed using a rubber mixture of nitrile butadiene rubber and chloroprene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166244A JPS5867425A (en) | 1981-10-16 | 1981-10-16 | Molding device for expanded heat insulating container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166244A JPS5867425A (en) | 1981-10-16 | 1981-10-16 | Molding device for expanded heat insulating container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5867425A JPS5867425A (en) | 1983-04-22 |
| JPH0235652B2 true JPH0235652B2 (en) | 1990-08-13 |
Family
ID=15827779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56166244A Granted JPS5867425A (en) | 1981-10-16 | 1981-10-16 | Molding device for expanded heat insulating container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5867425A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6147604U (en) * | 1984-08-31 | 1986-03-31 | 東海ゴム工業株式会社 | Molding mold |
| US20060202380A1 (en) * | 2005-03-11 | 2006-09-14 | Rachelle Bentley | Method of making absorbent core structures with undulations |
-
1981
- 1981-10-16 JP JP56166244A patent/JPS5867425A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5867425A (en) | 1983-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3132382A (en) | Resin foam insulated cabinet | |
| US2357513A (en) | Sealing strip and method of making same | |
| KR20010073363A (en) | Refrigerator door equipped with vacuum insulating material panel | |
| JPH11201382A (en) | Pipe joint with heat insulating layer and method of manufacturing the same | |
| JPH0235652B2 (en) | ||
| JPH05329849A (en) | Sealing method for foam mold | |
| CA1110151A (en) | Foam in place breaker strip seal | |
| JP2001050466A (en) | Pipe fitting with built-in foam layer | |
| JP4284858B2 (en) | Manufacturing method of heat insulation box | |
| JP2587767Y2 (en) | Backup material for sealing hollow molded plates | |
| JP2514127Y2 (en) | Concrete block with waterproof joint | |
| JPS6362368B2 (en) | ||
| JPS58163865A (en) | Method of sealing grooved type flange | |
| JPS6114920A (en) | Molding method of fiber reinforced plastic flanged socket by resin injection method | |
| JPH0228448B2 (en) | ||
| JPS6215334B2 (en) | ||
| JPH0431241Y2 (en) | ||
| JP2572808Y2 (en) | Anticorrosion pipe fittings | |
| JPS6115648B2 (en) | ||
| JPS6042105Y2 (en) | Joint water stop material | |
| JPH01135965A (en) | Foaming sealer | |
| JPH04110590A (en) | Thermal insulating box | |
| JPS5913590Y2 (en) | insulation door | |
| JPS5818427Y2 (en) | Water stop jig | |
| JPS60166414A (en) | Manufacture of rubber board with space in surface |