JPH0522151B2 - - Google Patents
Info
- Publication number
- JPH0522151B2 JPH0522151B2 JP57118609A JP11860982A JPH0522151B2 JP H0522151 B2 JPH0522151 B2 JP H0522151B2 JP 57118609 A JP57118609 A JP 57118609A JP 11860982 A JP11860982 A JP 11860982A JP H0522151 B2 JPH0522151 B2 JP H0522151B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- cap
- heat insulating
- insulating material
- box
- 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
- 238000002347 injection Methods 0.000 claims description 67
- 239000007924 injection Substances 0.000 claims description 67
- 239000011810 insulating material Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 8
- 238000005187 foaming Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims 1
- 239000012774 insulation material Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Refrigerator Housings (AREA)
Description
本発明は断熱箱体に係り、特に外箱と内箱との
間に形成された空間部に断熱材注入液を注入発泡
するための注入口をふたじめするのに好適なキヤ
ツプを具えた断熱箱体に関するものである。
従来の断熱箱体は、断熱箱体に断熱材注入液を
注入後に作業者が外箱に開口された注入口にキヤ
ツプを取付けるか、放射状すなわち＊状の切り込
みにより複数に分割されて自己復元力を有する弁
が形成されたプラスチツク成形品のセルフシール
キヤツプをあらかじめ注入口に取付けておき、断
熱材注入液を注入後に上記復元力によつて自動ふ
たじめされるものがある。しかし、上記セルフシ
ールキヤツプの弁は、断熱材注入液注入用の注入
ヘツドが出し入れされても変形することなく完全
に復元して注入口を密閉する大きな復元性を有す
る材質および精妙な形状肉厚の弁を必要としてい
た。さらに断熱材注入液が注入された後、断熱材
の発泡圧力により外箱に開口された注入口からキ
ヤツプが外れないようにするため、キヤツプの取
付け部が注入口の開口縁を表裏両面から挾み込む
複雑な形状の成形品となつていた。しかも、上記
複雑な形状の成形品であるため、取付け作業が容
易に行なえなかつた。また、上記断熱材注入液の
注入の際にキヤツプの注入側の面に断熱材が強固
に付着し、この断熱材をきれいに取り除くことが
困難であつた。
本発明の目的は、上記断熱材注入液が注入され
た後に、注入口をふたじめするための作業を必要
とせず、しかも注入側の面に付着した断熱材を容
易に取り除くことができるとともに構造簡単なセ
ルフシールキヤツプを具えた断熱箱体を提供する
ことにある。
上記目的を達成するため、断熱箱体の断熱材注
入口のふたじめは、注入口を充分被うことのでき
る大きさのフイルム状のキヤツプを、注入口を被
うように外箱の断熱材側の面に取付けた極めて簡
単な構造とした。上記フイルム状のキヤツプは、
断熱材注入液の注入後に断熱材の発泡圧力で押し
上げられ箱体の内側にぴつたり圧着され、これに
よつて注入口のふたじめをされるので、注入ヘツ
ドで押し下げたときに若干復元する程度の復元性
を有すればよい。上記断熱材注入液の注入の際に
キヤツプの注入側の面に付着した断熱材を剥離す
るためには、キヤツプの注入側の面は剥離特性の
良好な４ふつ化エチレン−６ふつ化プロピレン共
重合体のフイルムとし、反注入側の面は若干の復
元力を有する補強材とした。上記キヤツプの一端
を外箱の断熱材側に取付けて断熱材の注入口をふ
たじめした断熱箱体とすることにより、注入ヘツ
ドの出し入れ後に完全に復元するための大きな復
元性を有する材質および精妙な形状肉厚の弁を必
要とせず、また、取付け部の形状を複雑な成形品
とする必要もない。しかもキヤツプの注入側の面
を剥離特性良好な４ふつ化エチレン−６ふつ化プ
ロピレン共重合体のフイルムとしたので、キヤツ
プの注入側の面に残存付着した断熱材を小さな力
で容易に且つきれいに剥離できる。
以下本発明の一実施例を第１図、第２図、第３
図、第４図に従つて説明する。第１図は断熱材注
入状態断面図である。本発明の注入キヤツプ２は
断熱箱体の背面板１に注入キヤツプ２の背面とり
つけ部１０により図の如く貼り付けられる。注入
ヘツド３は、注入口９を介して断熱箱体内に進入
して注入キヤツプ２を押し下げて注入液４を注入
する。注入液４は注入された後、発泡して断熱材
５となり注入キヤツプを押し上げて背面板１にぴ
つたり付着する。しかし第１図に図示の注入ヘツ
ド３から注入された注入液４は、その一部が注入
キヤツプ２に付着して注入キヤツプ２を汚し、こ
の注入キヤツプ２に付着した注入液４が発泡硬化
して第２図に図示の断熱材５′となつて注入キヤ
ツプ上に残存する。その残存断熱材をきれいに除
去するために、第３図に示した構成の注入キヤツ
プ２を用いることである。すなわち、その構成
は、注入キヤツプ２の注入側の面に剥離特性の良
好な４ふつ化エチレン−６ふつ化プロピレン共重
合体の薄膜フイルム６を設け、反注入側の面に若
干復元性のある例えば厚紙などの補強材８をバイ
ンダー７でラミネートしたものである。
本実施例によれば、注入キヤツプ２を上記の如
き構成、材料にしたので、上記注入キヤツプ２
は、注入液４の注入後の発泡圧力で押し上げられ
て箱体の背面板１の内側にぴつたり圧着され、こ
れによつて注入口９のふたじめをするので、注入
ヘツド３で押し下げられた後に若干復元する程度
の小さな復元性を有する材料であれば良く、しか
も形状肉厚に格別の考慮をする必要もない。ま
た、注入キヤツプ２の注入側の面に剥離特性の良
好な４ふつ化エチレン−６ふつ化プロピレン共重
合体の薄膜フイルム６を設けたので、注入キヤツ
プ２の注入側の面に残存付着した断熱材５′を小
さな力で容易に且つきれいに剥離することがで
き、商品価値が低下するのを防止できる。上記４
ふつ化エチレン−６ふつ化プロピレン共重合体の
薄膜フイルム６と断熱材との剥離性は、各種材質
と断熱材との接着力（Kg／cm2）および剥離性の実
験結果を示す下表のとおり、他材質に較べて極め
て良好である。
下表中の接着力の実験方法は、50mm×50mmの大
きさのフイルム２枚の間に断熱材（ポリウレタン
フオーム）を発泡硬化させた後、上記両フイルム
の外側に治具を接着剤で貼付け、この治具を引つ
張り試験機で引つ張つて上記フイルムと断熱材と
が分離された接着力（Kg／cm2）を測定して行つ
た。但し、下表中の接着力の測定値において、接
着力1.3Kg／cm2および1.8Kg／cm2は、断熱材がスキ
ン層を残して破断し分離した値であり、フイルム
から剥離した値ではない。また、下表中の剥離性
は、フイルムの表面に付着した断熱材を手で撫ぜ
る程度の小さな力で断熱材がきれいに剥離したの
を○、大きな力を加えた場合に剥離したのを△、
大きな力を加えても剥離せず付着している断熱材
がスキン層を残して破断若しくは圧潰したのを×
とした。
The present invention relates to a heat insulating box body, and particularly includes a cap suitable for filling an injection port for injecting and foaming a heat insulating material injection liquid into a space formed between an outer box and an inner box. This relates to an insulating box. Conventional insulating boxes have self-restoring power by either having the operator attach a cap to the injection port opened in the outer box after injecting the insulating material injection liquid into the insulating box, or by dividing the box into multiple parts by radial or *-shaped cuts. In some cases, a self-sealing cap made of a plastic molded product having a valve formed therein is attached to the injection port in advance, and the cap is automatically closed by the above-mentioned restoring force after the insulating material injection liquid is injected. However, the valve of the above-mentioned self-sealing cap is made of a material with great resilience and an exquisite shape and thickness that completely restores its shape and seals the injection port without deformation even when the injection head for injecting the insulation material injection liquid is put in and taken out. needed a valve. Furthermore, after the insulation material injection liquid is injected, in order to prevent the cap from coming off from the injection port opened in the outer box due to the foaming pressure of the insulation material, the mounting part of the cap clamps the opening edge of the injection port from both the front and back sides. It was a molded product with a complicated shape. Furthermore, since the molded product has the above-mentioned complicated shape, it is difficult to install it easily. Further, when the above-mentioned heat insulating material injection liquid is injected, the heat insulating material firmly adheres to the injection side surface of the cap, making it difficult to remove the heat insulating material cleanly. It is an object of the present invention to eliminate the need for work to reheat the injection port after the above-mentioned insulation material injection liquid is injected, and to easily remove the insulation material that has adhered to the injection side surface. To provide a heat insulating box body equipped with a self-sealing cap having a simple structure. In order to achieve the above purpose, a film-like cap large enough to cover the inlet is placed at the top of the insulating material inlet of the insulating box, and a film-like cap is attached to the insulating material of the outer box so as to cover the inlet. It has an extremely simple structure that is attached to the wood side. The above film-like cap is
After injecting the insulation material injection liquid, it is pushed up by the foaming pressure of the insulation material and crimped tightly against the inside of the box, which closes the injection port, so it will recover slightly when pressed down with the injection head. It is sufficient if it has a certain degree of restorability. In order to peel off the heat insulating material adhering to the injection side of the cap when injecting the above-mentioned insulation material injection liquid, the injection side of the cap should be coated with tetrafluoroethylene-hexafluoropropylene, which has good peeling properties. A polymer film was used, and the surface opposite to injection was a reinforcing material with some restoring force. By attaching one end of the cap to the insulating material side of the outer box and closing the inlet for the insulating material, the cap is made of a material with great resilience to completely recover after the injection head is inserted and removed. There is no need for a valve with a delicate shape or thick wall, and there is no need for the mounting part to be a complicated molded product. Furthermore, since the injection side surface of the cap is made of a film of tetrafluoroethylene-hexafluoropropylene copolymer with good peeling properties, any residual adhering insulation material on the injection side surface of the cap can be easily and cleanly removed with a small amount of force. Can be peeled off. An embodiment of the present invention will be described below in Figs. 1, 2, and 3.
This will be explained with reference to FIGS. FIG. 1 is a sectional view of a state in which a heat insulating material is injected. The injection cap 2 of the present invention is attached to the back plate 1 of the heat insulating box by the attachment part 10 on the back side of the injection cap 2 as shown in the figure. The injection head 3 enters the insulating box through the injection port 9, pushes down the injection cap 2, and injects the injection liquid 4. After the injection liquid 4 is injected, it foams and becomes a heat insulating material 5, pushing up the injection cap and tightly adhering to the back plate 1. However, a part of the injection liquid 4 injected from the injection head 3 shown in FIG. The insulation material 5' shown in FIG. 2 remains on the injection cap. In order to cleanly remove the remaining heat insulating material, the injection cap 2 having the configuration shown in FIG. 3 is used. That is, the structure is such that a thin film 6 of tetrafluoroethylene-hexafluoropropylene copolymer with good peeling properties is provided on the injection side surface of the injection cap 2, and a thin film 6 of a tetrafluoroethylene-hexafluoropropylene copolymer is provided on the side opposite to injection. For example, a reinforcing material 8 such as cardboard is laminated with a binder 7. According to this embodiment, since the injection cap 2 is made of the above-mentioned structure and material, the injection cap 2
is pushed up by the foaming pressure after the injection liquid 4 is injected and is tightly crimped against the inside of the back plate 1 of the box, thereby closing the injection port 9, so that it is pushed down by the injection head 3. Any material may be used as long as it has a small restorability that is slightly restored after being removed, and there is no need to take special consideration to the shape and thickness. In addition, since the thin film 6 of tetrafluoroethylene-hexafluoropropylene copolymer with good peeling properties is provided on the injection side surface of the injection cap 2, the remaining adhering heat insulation on the injection side surface of the injection cap 2 can be removed. The material 5' can be easily and cleanly peeled off with a small force, and a decrease in commercial value can be prevented. Above 4
The peelability between the thin film 6 of the fluorinated ethylene-6 fluorinated propylene copolymer and the heat insulating material is shown in the table below showing the experimental results of the adhesion (Kg/cm 2 ) and peelability between various materials and the heat insulating material. As you can see, it is extremely good compared to other materials. The experimental method for adhesion strength in the table below is to foam and harden a heat insulating material (polyurethane foam) between two 50mm x 50mm films, and then attach a jig to the outside of both films with adhesive. This jig was stretched using a tensile tester to measure the adhesive force (Kg/cm 2 ) when the film and the heat insulating material were separated. However, in the measured values of adhesive strength in the table below, the adhesive strength of 1.3Kg/cm 2 and 1.8Kg/cm 2 is the value when the insulation material breaks and separates leaving the skin layer, and the value when it is peeled off from the film. do not have. In addition, the peelability in the table below indicates ○ when the insulation material peels off cleanly with a small force of hand-stroking the insulation material attached to the surface of the film, and △ when the insulation material peels off when a large force is applied. ,
The attached insulation material did not peel off even when a large force was applied, but it was broken or crushed, leaving a skin layer.
And so.
【表】
一方、断熱材の発泡圧力を利用して注入キヤツ
プ２を注入口９に密着させているので、断熱材の
発泡が完了するまでは注入キヤツプ２と注入口９
とは密着せず、よつて、断熱材の発泡時に発生す
るガスを充分効率良く排出することができ、断熱
箱体への断熱材の充填性向上や、断熱材中にボイ
ドの発生がなくなり、断熱不良を低減できる。
本発明によれば、復元性を有する材料よりなる
キヤツプを備えると共にキヤツプの注入側の面を
剥離特性良好な４ふつ化エチレン−６ふつ化プロ
ピレン共重合体のフイルムを設けたので、断熱材
注入液を注入する際のふたじめ作業者を必要とし
ないばかりか、キヤツプの注入側の面に付着した
断熱材を剥離する際に小さな力で容易に且つきれ
いに剥離することができ、作業の省力化ができる
と共に商品価値が低下するのを防止できる。[Table] On the other hand, since the foaming pressure of the insulation material is used to bring the injection cap 2 into close contact with the injection port 9, the injection cap 2 and the injection port 9 will remain closed until the foaming of the insulation material is completed.
As a result, the gas generated when the insulation material foams can be discharged efficiently, improving the ability to fill the insulation box with the insulation material, and eliminating voids in the insulation material. It can reduce insulation defects. According to the present invention, the cap is made of a material having resilience, and the injection side surface of the cap is provided with a film of tetrafluoroethylene-hexafluoropropylene copolymer having good peeling properties, so that the heat insulating material can be injected. Not only does it not require a second operator to inject the liquid, but the insulation material attached to the injection side of the cap can be removed easily and cleanly with a small amount of force, saving labor. It is possible to prevent the product value from decreasing.
第１図は本発明の断熱材注入状態の一実施例を
示す断面図、第２図は本発明の断熱材ふた締め状
態の一実施例を示す断面図、第３図は本発明の注
入キヤツプの一実施例を示す正面図、第４図は第
３図に図示の注入キヤツプが断熱材注入口に取付
けられた状態を示す図である。
１……箱体の背面板、２……注入キヤツプ、３
……注入ヘツド、４……注入液、５，５′……断
熱材、６……４ふつ化エチレン−６ふつ化プロピ
レン共重合体の薄膜フイルム、７……バインダ
ー、８……補強材、９……注入口、１０……注入
キヤツプの背面板取付け部。
FIG. 1 is a sectional view showing an embodiment of the insulating material injected state of the present invention, FIG. 2 is a sectional view showing an embodiment of the insulating material closed state of the present invention, and FIG. 3 is a sectional view of the injecting cap of the present invention. FIG. 4 is a front view of one embodiment of the present invention, showing the injection cap shown in FIG. 3 attached to the insulation material injection port. 1... Back plate of the box body, 2... Injection cap, 3
...Injection head, 4...Injection liquid, 5,5'...Insulating material, 6...Thin film of 4-fluorinated ethylene-6-fluorinated propylene copolymer, 7...Binder, 8...Reinforcement material, 9... Inlet, 10... Rear plate attachment part of the injection cap.
Claims (1)
空間部に発泡された断熱材と、上記断熱材の発泡
前の注入液を注入するための注入口を被う復元性
を有する材料からなるキヤツプとを具えた断熱箱
体において、 上記キヤツプは、上記注入口を被うようにして
外箱の断熱材側の面に一端を取付けられ且つ、そ
の注入側の面に剥離特性の良好な４ふつ化エチレ
ン−６ふつ化プロピレン共重合体のフイルムを設
けられたことを特徴とする断熱箱体。[Claims] 1. An outer box, an inner box, a heat insulating material foamed in the space formed between the two boxes, and an injection port for injecting an injection liquid into the heat insulating material before foaming. and a cap made of a resilient material that covers the injection port, the cap having one end attached to the insulation side surface of the outer box so as to cover the injection port, and A heat insulating box characterized in that a film of tetrafluoroethylene-hexafluoropropylene copolymer having good peeling properties is provided on the side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118609A JPS599483A (en) | 1982-07-09 | 1982-07-09 | Manufacture of heat-insulating box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118609A JPS599483A (en) | 1982-07-09 | 1982-07-09 | Manufacture of heat-insulating box body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599483A JPS599483A (en) | 1984-01-18 |
| JPH0522151B2 true JPH0522151B2 (en) | 1993-03-26 |
Family
ID=14740788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57118609A Granted JPS599483A (en) | 1982-07-09 | 1982-07-09 | Manufacture of heat-insulating box body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599483A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173068A (en) * | 1985-01-24 | 1986-08-04 | 三洋電機株式会社 | Manufacture of heat-insulating box body |
| JPS6341521U (en) * | 1986-09-05 | 1988-03-18 | ||
| JPS6341520U (en) * | 1986-09-05 | 1988-03-18 | ||
| JPH0425413A (en) * | 1990-05-22 | 1992-01-29 | Tokai Chem Ind Ltd | Manufacture of foamed product |
| JP2020148352A (en) * | 2019-03-11 | 2020-09-17 | Ｐｈｃホールディングス株式会社 | Injection port opening/closing device of heat insulating box |
| DE102019216095A1 (en) * | 2019-10-18 | 2021-04-22 | BSH Hausgeräte GmbH | Household refrigeration appliance device |
-
1982
- 1982-07-09 JP JP57118609A patent/JPS599483A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS599483A (en) | 1984-01-18 |
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