CN1061518A - A kind of thermal insulation helmet and manufacture method thereof - Google Patents
A kind of thermal insulation helmet and manufacture method thereof Download PDFInfo
- Publication number
- CN1061518A CN1061518A CN 91106474 CN91106474A CN1061518A CN 1061518 A CN1061518 A CN 1061518A CN 91106474 CN91106474 CN 91106474 CN 91106474 A CN91106474 A CN 91106474A CN 1061518 A CN1061518 A CN 1061518A
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- helmet
- thermal insulation
- described thermal
- cooling cover
- heat
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- Helmets And Other Head Coverings (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
A kind of thermal insulation helmet is the internal layer at the common helmet.Increased a heat insulation and heat control layer, said heat insulation and heat control layer is with the injection molded hemispherical cooling cover of a kind of polymer colloid thing.The refrigerating medium that in this polymer colloid thing, contains a kind of polyalcohol.This colloid thing freezing point is low, and thermal conductivity factor is little, and thermal capacity is big, has good heat-proof quality.During use the cooling lining cap of making is placed on precooling in the pre-cooler, installs in the ordinary helmet then and wear.A lining cap that is pre-chilled to-5 ℃ can keep nice and cool under 32 ℃ of environment temperatures at least in 40～50 minutes.The lining cap can use repeatedly, and actual application value is arranged.
Description
The present invention is relevant with the cap class, belongs to the production technology of a kind of defensive helmet and the relevant this helmet.
The helmet is widely used in building, metallurgy, industrial and mineral, army and field of traffic as a kind of security protection product, is made by metal, plastics or other materials.Because the helmet is used for protecting head safety, all than higher, very do not note as for heat-proof quality to the helmet for the requirement of the impact strength of the helmet.So the heat-proof quality of the existing helmet is all poor, especially at torridity summer, is with this helmet unbearably sultry especially, particularly wear for a long time, sometimes even can cause heatstroke.
The object of the present invention is to provide a kind of design with thermal insulation helmet of good heat insulation, cooling effect, and the production technology of the relevant this helmet.
Solution of the present invention is the internal layer at the ordinary helmet shell, has increased a heat insulation and heat control layer, and said heat insulation and heat control layer is the cooling cover of hemispherical or other shapes of being injection molded into a kind of polymer colloid.In this polymer colloid, contain a kind of refrigerating medium.
An important feature of the present invention is that said cooling cover is injection molded by a kind of polymer colloid thing.This polymer colloid thing comprises following component: it contains the polymer of (weight %) 2.5-7.5, the refrigerating medium of 2.9-5.0 and the water of aequum, and said polymer comes down to a kind of polyvinyl alcohol.The polyvinyl alcohol that is used for purpose of the present invention requires the degree of polymerization more than 1500.Said refrigerating medium then is that a kind of carbon number is the polyalcohol of 2-6.So the colloidal solution freezing point that constitutes is low, thermal conductivity factor is little, and thermal capacity is big, has good heat-proof quality.
The production method of this thermal insulation helmet of the present invention is as follows:
A, the polyvinyl alcohol of proportional quantity is dropped in the water, be heated to about 90 ℃, insulated and stirred is all dissolved up to polyvinyl alcohol.The refrigerating medium that adds proportional quantity again mixes;
B, carry out sterilization with steam under pressure;
C, above-mentioned colloid mixture is injected the mould of the helmet lining cap of the system of giving, put into refrigerating chamber cryogenic freezing appropriate time together with mould thereafter, freezer temperature is controlled at below-20 ℃.Take out the demoulding then, obtain described colloid cooling cover.
D, the cooling of demoulding cover is put into vacuum extractor immediately dewater, the control dehydration rate is in 10～15% scopes.
Cooling cover after e, the taking-up dehydration, slaking at room temperature.
F, the cooling after slaking put, put a clad again, so just make a said cooling lining cap, immediately the sealing of packing in the polythene film bag of lining cap is preserved then, in order to avoid the lining cap is air-dry, the cooling of so making serves as a contrast cap, and interim again the taking-up from plastics with helmet shell combines complete thermal insulation helmet of formation during to use.
Below in conjunction with accompanying drawing, further describe structure of the present invention and manufacture process with an example again.
Fig. 1 is the part section structural representation of indication thermal insulation helmet of the present invention;
Fig. 2 is the structural representation of cooling lining cap among Fig. 1.
Fig. 3 is for making the mould cross-sectional view of cooling lining cap.
Weighing polyvinyl alcohol 1000 grams drop in the 13600 gram water, are heated to stir under 90 ℃ of insulations all to dissolve up to polyvinyl alcohol, and input 440 gram refrigerating mediums stir and obtain a thick polymer colloid thing.Take advantage of heat with behind the colloid thing injection molding, make it cool off naturally, after the injection article temperature drops to room temperature, put in-20 ℃ the refrigerating chamber freezing 7-8 minute together with mould into and take out the demoulding, obtain a colloid cooling cover (2), then the colloid cooling cover that is injection molded into is put in the vacuum extractor, vacuum dehydration under 0.1 millimetres of mercury, the control dehydration rate is 13%.Take out cooling and be enclosed within the room temperature, after slaking, the cover last layer just constitutes a cooling lining cap as shown in Figure 2 with the cap sleeve (3) of knit fabric system.The sealing of then packing in the polythene film bag is preserved, in case air-dry.The cooling lining cap of making, about 1.5～2 centimetres of the thickness of its crown, about 0.8～1 centimetre of hatband thickness takes out from polybag during use again, combines with helmet shell and just forms a complete thermal insulation helmet (1).
During use, earlier cooling lining cap is put into giving of refrigerator and so on and give coldly in the device for cooling, the temperature of refrigerator should be lower than-5 ℃.Because the cooling cover in the lining cap is injection molded by a kind of polymer colloid, contains a kind of refrigerating medium in the colloid, therefore, this lining cap freezing point is low, and thermal conductivity factor is little, and thermal capacity is big, can absorb big cold in giving cold process.The thermal insulation helmet of forming is worn after head goes up, and the lining cap absorbs human body head surrounding environment heat, make the people feel nice and cool, because this colloidal solution thermal conductivity factor is little, thermal capacity is big, slowly released cold quantity, the lining cap can be brought into play the cooling and insulating effect in a long time, experiment shows that a cooling lining cap that gives being as cold as-5 ℃ is under 32 ℃ of environment temperatures, wear this thermal insulation helmet, in 40～50 minutes, can keep nice and cool at least.Lining cap on the thermal insulation helmet can freely load and unload, when the lining temperature of cap and environment temperature are in balance and when losing cooling effect, can take off the lining cap puts into and gives cooler and give cold, change one and give cold good new lining cap, each helmet just can be rotated use repeatedly as long as be equipped with two lining caps like this, and reaches cooling, effect of heat insulation.For some fluidity posts, as motorcycle rider, we also specialized designs a kind of portable cold bag that gives, to adapt to their needs in road.
Advantage of the present invention is clearly, and the lining cap has good flexible and elasticity, does not freeze, and is not cracked, indeformable, can repeatedly use repeatedly, and actual application value is arranged, can extensive use in fields such as building, metallurgy, industrial and mineral, army and traffic.
Further specify thermal protective performance of the present invention with several examples more below, certainly be not confined to these several example ranges, heat insulation effect test is being experimental condition under 32 ℃ of environment temperatures in the following example, test method is behind the polymer colloid thing injection molded, give being as cold as-5 ℃ earlier, move on to then to place under 32 ℃ of environment temperatures and took out the temperature of measuring the colloid thing in 40 to 50 minutes again.
Example 123
Component (weight %)
Polyvinyl alcohol 6.65 3.39 2.74
Propane diols 2.93 4.98-
Glycerine--4.99
Water 90.43 91.63 92.27
Anti-thermal effect
Give cold temperature (℃)-5-5-5
Duration (branch) 45 45 50
The colloid temperature (℃) 20 22 22
Claims (10)
1, a kind of thermal insulation helmet is characterized in that the internal layer at the common helmet, also has a heat insulation and heat control layer, and said heat insulation and heat control layer is the hemispherical cooling cover that is injection molded into a kind of colloid that contains refrigerating medium.
2,, it is characterized in that said cooling cover is made of following component (weight %) according to the described thermal insulation helmet of claim 1:
A, 2.5～7.5 colloid polymer;
B, 2.9～5.0 refrigerating medium;
The water of c, aequum.
3,, it is characterized in that the polymer described in the component a is a kind of polyvinyl alcohol according to the described thermal insulation helmet of claim 2.
4,, it is characterized in that the refrigerating medium described in the components b is a kind of polyalcohol according to the described thermal insulation helmet of claim 2.
5, according to the described thermal insulation helmet of claim 3, the degree of polymerization that it is characterized in that said polyvinyl alcohol is more than 1500.
6, according to the described thermal insulation helmet of claim 4, the carbon number that it is characterized in that said polyalcohol is 2-6.
7,, it is characterized in that the production method of said cooling cover is according to the production method of the described thermal insulation helmet of claim 1:
Behind a, the water heating for dissolving polyvinyl alcohol, add refrigerating medium and mix;
B, sterilize with steam under pressure;
C, casting, the cooling cover is made in the demoulding after cryogenic freezing;
D, vacuum dehydration;
E, room temperature curing;
F, put a clad and be placed in the polythene film bag sealing and preserve.
8,, it is characterized in that the temperature of casting cryogenic freezing among the production stage c is lower than-20 ℃ according to the production method of the described thermal insulation helmet of claim 7.
9, according to the production method of the described thermal insulation helmet of claim 7, the dehydration rate that it is characterized in that vacuum dehydration among the production stage d is between 10-15%.
10,, it is characterized in that the cooling cover of making as stated above is combined into a complete thermal insulation helmet by some double buckles on the clad and ordinary helmet according to claim 1,7 described thermal insulation helmets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106474 CN1061518A (en) | 1991-07-15 | 1991-07-15 | A kind of thermal insulation helmet and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106474 CN1061518A (en) | 1991-07-15 | 1991-07-15 | A kind of thermal insulation helmet and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061518A true CN1061518A (en) | 1992-06-03 |
Family
ID=4907887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106474 Pending CN1061518A (en) | 1991-07-15 | 1991-07-15 | A kind of thermal insulation helmet and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003101232A1 (en) * | 2002-06-02 | 2003-12-11 | Multi Polar Enterprises (Shenzhen) Limited | Safety helmet for heat dissipation |
-
1991
- 1991-07-15 CN CN 91106474 patent/CN1061518A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003101232A1 (en) * | 2002-06-02 | 2003-12-11 | Multi Polar Enterprises (Shenzhen) Limited | Safety helmet for heat dissipation |
| US7219371B2 (en) | 2002-06-02 | 2007-05-22 | Multi Polar Enterprises (Shen Zhen) Limited | Safety helmet for heat dissipation |
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| WD01 | Invention patent application deemed withdrawn after publication |