CN1132684A - Insulating synthetic resin article and making method thereof - Google Patents
Insulating synthetic resin article and making method thereof Download PDFInfo
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- CN1132684A CN1132684A CN 95103770 CN95103770A CN1132684A CN 1132684 A CN1132684 A CN 1132684A CN 95103770 CN95103770 CN 95103770 CN 95103770 A CN95103770 A CN 95103770A CN 1132684 A CN1132684 A CN 1132684A
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- synthetic resin
- gas
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Abstract
An insulating synthetic resin ware used for thermos, insulating food container or cold storage box is composed of internal and external walls made of synthetic resin and sealed hollow layer between said walls, which is aerated by at least one of argon, xenon and krypton. Said synthetic resin ware is made by blowing or injecting process with mould.
Description
The present invention relates to comprise thermal insulation synthetic resin system utensil and manufacture method thereof as the heat-insulated container of vacuum flask, incubation canteen and refrigerating box etc.
Past, as heat-insulated container, the structure of known a kind of heat-insulated container is as follows: plastic internal layer container and outer layer container are nested together, constitute the heat-insulated container of double-wall structure, and organic foaming body or formed bodies such as the space segment that between internal layer container and outer layer container, forms filling hard polyurethane foam or expanded polystyrene (EPS), perhaps fill inorganic material powders such as perlite.
And, also known a kind of vacuum heat-insulation container, its structure is nested together for internal layer container and the outer layer container that metal (mainly being stainless steel) is made, constitute the container of double-wall structure, and the space segment that forms between internal layer container and the outer layer container is carried out vacuum suction and makes it become vacuum heat-insulating layer.
Above-mentioned has earlier in the heat-insulated container, the former synthetic resin system heat-insulated container is because the thermal conductivity of institute's packing material is big, in the case, want to improve its heat-proof quality, the thickness (distance between internal layer container and the outer layer container) of thermal insulation layer is increased to more than a certain degree.In addition, when in thermal insulation layer, filling filler,, also the thickness of thermal insulation layer must be brought up to a certain degree, like this, just exist 5～10 times the problem that thermal insulation layer thickness is equivalent to have earlier the vacuum heat-insulation container in order to improve the efficient of padding.Therefore, this have the capacity utilization of heat-insulated container low earlier, can not make us very satisfied as carrying with utensil.
On the other hand, for the situation of the latter's metal vacuum heat-insulated container, even the thickness of thermal insulation layer is less, also can obtain excellent heat insulation property, can make us very satisfied as carrying, still with utensil, because the manufacture method complexity is so have to improve price.And owing to have the structure of vacuum heat-insulating layer between internal layer container and outer layer container, this part is subjected to atmospheric pressure, therefore exists the problem that article shape is very limited.
The purpose of this invention is to provide a kind of low cost of manufacture and have good heat-proof quality, simultaneously good thermal insulation synthetic resin system utensil and the manufacture method thereof of capacity utilization.
Thermal insulation synthetic resin system utensil of the present invention has the space segment that forms between outer wall that inwall that synthetic resin makes and synthetic resin makes and above-mentioned inwall and the outer wall, is filled with at least a gas in argon gas, xenon or the krypton gas and forms the sealed hollow layer at above-mentioned space segment.
Other form of thermal insulation synthetic resin system utensil of the present invention is with plastic internal layer container and outer layer container global formation, between above-mentioned internal layer container and outer layer container, be provided with space segment, constitute plastic double sheet container thus, be filled with at least a gas in argon gas, xenon and the krypton gas and form the sealed hollow layer at above-mentioned space segment.
In the thermal insulation synthetic resin system utensil of the present invention, the distance between inwall and the outer wall can be below 5mm.
The manufacture method of thermal insulation synthetic resin system utensil of the present invention is as follows: moulding material is extruded with tubular form and formed parison, be blown at least a gas in argon gas, xenon or the krypton gas to the inside of this parison, simultaneously this parison is clipped between a pair of mould and with its sealing, thereby forms the synthetic resin system utensil that reaches the double-wall structure that the sealed hollow layer of the above-mentioned gas that forms constitutes by inwall and outer wall between them.
In the method for the invention, also can be when in shaping dies, injecting the synthetic resin of fusion, in the synthetic resin of fusion, be blown at least a gas in argon gas, xenon or the krypton gas, and with its sealing, make its cooling, thereby form the synthetic resin system utensil that reaches the double-wall structure that the sealed hollow layer of the above-mentioned gas that forms constitutes by inwall and outer wall between them.
According to the present invention, because the space segment at the double-wall structure with synthetic resin system inner and outer wall is provided with the sealed hollow layer that is made of the low argon gas of thermal conductivity, xenon, krypton gas or their mist, therefore, compare with the synthetic resin utensil that polyurethane resin is used for thermal insulation layer that has earlier, the present invention can obtain having the heat insulation utensil of good effect of heat insulation.And, under with the occasion of heat insulation utensil as container, compare with the thermally insulated synthetic resin container that has earlier, owing to can be under the condition of equal above heat-proof quality the thickness of thermal insulation layer be reduced to below half, so the present invention can provide capacity utilization big heat-insulated container.
And according to structure of the present invention, owing to not being subjected to the such atmospheric pressure of vacuum heat-insulation mode, therefore, the present invention can provide square heat insulation utensil and the heat-insulated container that waits different shape.
And, because the distance between inwall and the outer wall is below 5mm, even the space segment between inwall and outer wall charges into argon gas, xenon, krypton gas or their mist, also can prevent the convection current of these gases, therefore can greatly prevent the convection heat transfer' heat-transfer by convection that causes by gaseous exchange, so the present invention can provide heat-proof quality good synthetic resin system utensil.
The method according to this invention, owing to be blown into the low argon gas of thermal conductivity, xenon, krypton gas or their mist in or the molten resin in the injection molding mould inner to the parison of tubulose, thereby form the heat insulation utensil of double-wall structure with sealed hollow layer, therefore, compare with the resin heat-insulated container that polyurethane resin is used for thermal insulation layer that has earlier, heat-insulated container of the present invention can be brought into play good heat-proof quality.Therefore, with the condition of the equal above performance of the resin heat-insulated container that has earlier under the thickness of thermal insulation layer is reduced to below half, thereby when forming the container of the conduct heat insulation utensil relevant with the present invention, capacity utilization is improved.
And, under the occasion that constitutes heat-insulated container, compare with the vacuum heat-insulation container that has earlier, because its method for making is simple, therefore, can manufacture a product at an easy rate, cheap heat-insulated container can be provided, simultaneously, compare with the heat-insulated container that has earlier of content inorganic filling powder, the present invention can cheapness provide lightweight heat-insulated container.In addition, owing to can not be subjected to the such atmospheric pressure of vacuum heat-insulation mode, the present invention can provide the heat insulation utensil or the heat-insulated container of wide variety of shapes such as square.
Brief description of drawings
Fig. 1 is placed on the profile of the state between the pair of metal mould for the expression parison.
Fig. 2 makes the profile of the state of the parison swell shown in Fig. 1 for expression.
Fig. 3 makes the further profile of the state of expansion of the parison shown in Fig. 2 for expression.
Fig. 4 is clipped in the parison that expands for expression the profile of the state in the metal die.
Fig. 5 is the side view of the partly cut-away of synthetic resin system heat-insulated container that will obtain.
Fig. 6 injects the synthetic resin of fusion for expression the profile of the state of injection moulding mould.
Fig. 7 is the profile of expression state of injecting gas in the injection moulding mould.
Below, be example with the situation that adopts blow molding manufactured thermal insulation synthetic resin system double sheet container, explain the present invention.
When adopting the inventive method to make synthetic resin system heat-insulated container, at first, as shown in Figure 1, use the pair of metal mould 1,2 have corresponding to the shaping dies of purpose article shape, and the moulding material resin can be extruded into extruder between these two metal patterns with tubular form.Among Fig. 1, only show the mouth mould 3 at extruder front end position, omitted the extruder main body.Above-mentioned metal pattern 1 is made of with installing plate 5 that mould main body 4 is installed and the penetrator ram 6 that is connected with installing plate 5 metal pattern main body 4; Metal pattern 2 is made of with installing plate 8 that mould main body 7 is installed and the penetrator ram 9 that is connected with installing plate 8 metal pattern main body 7.
At first, the forming synthetic resin material is extruded into tubulose and is formed parison 10 by extruding dies 3.Resin used herein can be a polyacetal resin, also can select resins such as hard PVC (polyvinyl chloride), Merlon, polyamide, PETG, polypropylene, PEN, cellulosic plastics aptly for use.
Secondly, metal pattern 2 is moved along the direction of the arrow a of Fig. 1, in parison 10, be blown into simultaneously argon gas, xenon, krypton gas or their mist, parison 10 is expanded, as shown in Figure 2, above the die-face of the metal pattern main body 7 of the metal pattern 2 of a side is extruded into the parison 10 that expands.
Blow the parison 10 of above-mentioned expansion bigger, moving metal mould 2 gradually simultaneously, as shown in Figure 3, when the shaft core position of the penetrator ram 6 of metal pattern 1 and the penetrator ram 9 of metal pattern 2 on time, stop moving metal mould 2.Under this state, mouthful mould 3 is by withdrawing between the metal pattern 1,2.
Then, as shown in Figure 4, make penetrator ram 6,9 elongation, the metal pattern body of two metal patterns is pushed through together, thereby parison 10 is clipped in wherein.Thus, squeezed parison 10 distortion between metal pattern 1,2, formed the synthetic resin system heat-insulated container 12 of defined shape, metal pattern 1,2 is opened,, obtained synthetic resin system heat-insulated container 12 shown in Figure 5 thus by taking out formed body in the metal pattern 1,2.
Heat-insulated container 12 shown in Figure 5 is made of container body 15 and lid 16, the double-wall structure of container body 15 for constituting by container inner wall 17 and container outer wall 18, form sealed hollow layer 19 between container inner wall 17 and the container outer wall 18, simultaneously, lid 16 is served as reasons and is covered the double-wall structure of inwall 20 and cover outer wall 21 formations, forms sealed hollow layer 22 between lid inwall 20 and cover outer wall 21.The thickness of these sealed hollow layers 19,22 is greatly below 5mm.
Above-mentioned sealed hollow layer 19,22 is made of argon gas, xenon, krypton gram or their mist, and wherein, the thermal conductivity of xenon is 0.52 * 10
2Wm
-1K
-1(0 ℃), the thermal conductivity of krypton gas are 0.87 * 10
2Wm
-1K
-1(0 ℃), thermal conductivity is all very little, therefore can obtain good heat-proof quality.The thermal conductivity of air is 2.41 * 10
2Wm
-1K
-1(0 ℃), the thermal conductivity of nitrogen are 2.40 * 10
2Wm
-1K
-1(0 ℃), the thermal conductivity of argon gas are 1.63 * 10
2Wm
-1K
-1(0 ℃), obviously, the thermal conductivity of above-mentioned xenon or krypton gas and argon gas is all lower than other the gas or the thermal conductivity of air.Owing to adopt the low gas of above-mentioned thermal conductivity, compare with the polyurethane heat-insulated container that has earlier, can under the condition of equal above performance, the thickness of thermal insulation layer be reduced to below half, therefore can improve capacity utilization.
And because the thickness of sealed hollow layer 19,22 below 5mm, is difficult for taking place gas inside to flow phenomenon, so heat-proof quality improves.
The heat-insulated container 12 that adopts above manufacture method to make, owing to can create by a forming process, therefore, the manufacturing cost of the synthetic resin system heat-insulated container of making like this is extremely low, and demonstrate than air heat-insulation layer good the thermal insulation of Duoing, simultaneously, adopt the resin heat-insulated container of polyurethane resin etc. to compare with thermal insulation layer, capacity utilization is much higher, and weight alleviates greatly.And, owing to charged into gas in the sealed hollow layer 19,22, and different with the vacuum heat-insulation mode that has earlier, can not be subjected to atmospheric pressure, therefore increased the free degree of shaped design, can make the square heat-insulated container that waits different shape.
More than, illustrated with the above embodiments and the situation of the synthetic resin system utensil that is configured as container shapes to have adopted method of the present invention, also can make synthetic resin system thermal insulation board at an easy rate.In this case, use a pair of metal pattern that has corresponding to the shaping dies that forms plate body, implement said method with this a pair of metal pattern and get final product.
The blow moulding that is blown into all gases in the foregoing description subtend parison 10 and is shaped is illustrated.But also can adopt the method for molten resin injection moulding is made heat-insulated container, therefore, also method of the present invention can be applied in the injection moulding.
That is, in the method, as shown in Figure 6 and Figure 7, in advance with mould 30 closures, by the synthetic resin of injection fusion in the die cavity 31 of injection port 32 in this mould, then, inject argon gas, xenon, krypton gas or their mist, carry out pressurize and cooling, like this, the die face in die cavity 31 forms synthetic resin wall 33, with injection port 32 sealings, then in space 34, form the utensil of the required form that has charged into above-mentioned gas, just can take out heat insulation utensil finished product after the die sinking.Symbol 35 is for being used for infeeding the synthetic resin of fusion and the nozzle of gas in injection port 32.
As mentioned above, according to the present invention, because the sealed hollow layer that constitutes by the low argon gas of thermal conductivity, xenon, krypton gas or their mist in the space segment setting of double-wall structure with resinous inner and outer wall, therefore compare with the heat insulation utensil of resin that polyurethane resin is used for thermal insulation layer that has earlier, can obtain to have the heat insulation utensil of good effect of heat insulation.And, under with the situation of heat insulation utensil, compare with the resin heat-insulated container that has earlier as container, can under the condition of equal above heat-proof quality, the thickness of thermal insulation layer be reduced to below half, therefore, the present invention can provide capacity utilization big heat-insulated container.
And, according to structure of the present invention,, therefore can provide square heat insulation utensil and the heat-insulated container that waits different shape owing to can not be subjected to the such atmospheric pressure of vacuum heat-insulation mode.
In addition, because the distance between inwall and the outer wall is below 5mm, can prevent to be filled in the gaseous exchange of argon gas, xenon, krypton gas or their mist of the space segment between the inner and outer wall, therefore can greatly prevent the convection heat transfer' heat-transfer by convection at sealed hollow layer place, can provide heat-proof quality good resin system utensil or heat-insulated container thus.
In addition, the method according to this invention, in parison inside that forms tubulose or the molten synthetic resin in injecting mould, be blown into the low argon gas of thermal conductivity, xenon, krypton gas or their mist, under the situation of extruded parisons, it is clipped in the mould, is configured as the heat insulation utensil of double-wall structure with sealed hollow layer; Under the situation of injecting molten resin, be blown into above-mentioned gas and carry out pressurize, cooling, form heat insulation utensil thus, so handling ease, and compare with the heat insulation utensil of resin that polyurethane resin is used for thermal insulation layer that has earlier, can obtain to have the heat insulation utensil of good effect of heat insulation.And, under with the situation of heat insulation utensil, compare with the resin heat-insulated container that has earlier as container, owing to can under the condition of equal above heat-proof quality, the thickness of thermal insulation layer be reduced to below half, so capacity utilization improves.
And, compare with the vacuum heat-insulation container that has earlier, because method for making is simple, thereby can be honest and clean Manufacture a product valency, cheap heat insulation utensil can be provided, simultaneously, with the content inorganic filling powder The heat-insulated container that has earlier compare, can cheapness provide lightweight heat-insulated container.
Claims (7)
1. thermal insulation synthetic resin system utensil, it is characterized in that, it has outer wall that inwall that synthetic resin makes and synthetic resin makes and the space segment that forms between above-mentioned inner and outer wall, be filled with at least a gas in argon gas, xenon and the krypton gas and form the sealed hollow layer at above-mentioned space segment.
2. the described thermal insulation of claim 1 synthetic resin system utensil is characterized in that distance between inwall and the outer wall is below 5mm.
3. thermal insulation synthetic resin system utensil, it is characterized in that, make plastic internal layer container and outer layer container monolithic molding, between above-mentioned internal layer container and outer layer container, be provided with space segment, constitute plastic double sheet container thus, be filled with at least a gas in argon gas, xenon and the krypton gas and form the sealed hollow layer at above-mentioned space segment.
4. the described thermal insulation of claim 3 synthetic resin system utensil is characterized in that distance between internal layer container and the outer layer container is below 5mm.
5. the described thermal insulation of claim 3 synthetic resin system utensil, it is characterized in that above-mentioned synthetic resin system double sheet container is made of a kind of plastics that are selected from polyacetal resin, hard PVC, Merlon, polyamide, PETG, polypropylene, PEN, cellulosic plastics.
6. the manufacture method of a thermal insulation synthetic resin system utensil, it is characterized in that, moulding material is extruded with tubular form and formed parison, be blown at least a gas in argon gas, xenon and the krypton gas to the inside of this parison, simultaneously this parison is clipped between a pair of mould and with its sealing, forms the synthetic resin system utensil of the double-wall structure that the sealed hollow layer by inner and outer wall and the above-mentioned gas that forms constitutes thus between inside and outside wall.
7. the manufacture method of a thermal insulation synthetic resin system utensil, it is characterized in that, in shaping dies, inject the synthetic resin of fusion, in the synthetic resin of fusion, be blown into simultaneously at least a gas in argon gas, xenon and the krypton gas, and with its sealing, make its cooling, form the synthetic resin system utensil of the double-wall structure that the sealed hollow layer by inner and outer wall and the above-mentioned gas that forms constitutes thus between inside and outside wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103770 CN1132684A (en) | 1995-03-29 | 1995-03-29 | Insulating synthetic resin article and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103770 CN1132684A (en) | 1995-03-29 | 1995-03-29 | Insulating synthetic resin article and making method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1132684A true CN1132684A (en) | 1996-10-09 |
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ID=5074861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95103770 Pending CN1132684A (en) | 1995-03-29 | 1995-03-29 | Insulating synthetic resin article and making method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1132684A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102100469A (en) * | 2010-11-16 | 2011-06-22 | 宋世奇 | Heat insulation cup and manufacturing method thereof |
| CN102773996A (en) * | 2012-07-23 | 2012-11-14 | 吴忠市恒通塑料制品有限公司 | Method and mold for producing plastic containers |
| CN110087518A (en) * | 2016-10-25 | 2019-08-02 | 艾伦·马克·克劳利 | Improvement of Double Wall Containers |
-
1995
- 1995-03-29 CN CN 95103770 patent/CN1132684A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102100469A (en) * | 2010-11-16 | 2011-06-22 | 宋世奇 | Heat insulation cup and manufacturing method thereof |
| CN102773996A (en) * | 2012-07-23 | 2012-11-14 | 吴忠市恒通塑料制品有限公司 | Method and mold for producing plastic containers |
| CN110087518A (en) * | 2016-10-25 | 2019-08-02 | 艾伦·马克·克劳利 | Improvement of Double Wall Containers |
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