CN104859964A - Insulation board, production method of insulation board, and cold insulation box - Google Patents
Insulation board, production method of insulation board, and cold insulation box Download PDFInfo
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- CN104859964A CN104859964A CN201410830627.XA CN201410830627A CN104859964A CN 104859964 A CN104859964 A CN 104859964A CN 201410830627 A CN201410830627 A CN 201410830627A CN 104859964 A CN104859964 A CN 104859964A
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Landscapes
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an insulation board, a production method of the insulation board, and a cold insulation box. The insulation board is characterized by comprising a VIP (Vacuum Insulation Panel) and a foam material, wherein the foam material completely covers the VIP. The cold insulation box comprises a box cover and a box body; the box cover and the box body comprise thermal insulating layers. The foam material and the VIP are integrally formed, and form the thermal insulating layers of the box cover and the box body respectively, so that the VIP is completed covered with the foam material, the abrasion resistance and the shock resistance of the VIP can be improved greatly, and the VIP is unlikely to be damaged, the insulation advantages of the VIP can be realized completely on the cold insulation box, and a good cold insulation effect can be improved greatly.
Description
Technical field
The present invention relates to a kind of thermal insulative board
,its production method of thermal insulative board and cold insulated cabinet.
Background technology
Chinese patent literature CN2035740U discloses a kind of Portable thermal insulation box, be made up of case lid and casing, the thermal insulation layer having polystyrene foamed to make in case lid and casing, after casing and case lid adopt inflation or compressing structure is closed, makes to be in low-temperature condition for a long time in case.
Polystyrene foam (Expanded Polystyrene is called for short EPS) is a kind of light type high-molecule poly-mer.It adopts polystyrene resin to add foaming agent, and heating is simultaneously softened, and foaming agent produces gas, forms a kind of foamed plastic of rigid closed cell structure.Its job operation can be divided into type method and extrusion molding by the difference of foam pattern.When the coefficient of thermal conductivity of polystyrene is 30 DEG C 0.116 watt/(rice is opened).
Vacuum heat-insulating plate or vacuum insulation panel (i.e. VIP is the abbreviation of English Vacuum Insulation Panel), during the coefficient of thermal conductivity 30 DEG C of VIP generally can <0.003 watt/(rice is opened).
VIP finished product is generally flat board, also can be made into arc; VIP comprises the film bag for vacuum coater core, and film bag is not wear-resistant, not shock resistance; Once film bag breakage gas leakage, then namely VIP lost efficacy, and the coefficient of thermal conductivity of inefficacy VIP will significantly improve.This causes being VIP by polystyrene foamed direct replacement simply, to obtain VIP formula cold insulated cabinet.
Therefore, how in cold insulated cabinet, adopting VIP, to play the advantage of VIP completely, significantly to improve cold insulation effect, is the technical matters that this area will solve.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of structure simple, can significantly improve cold insulation effect and its production method of the not easily damaged thermal insulative board of the VIP adopted, thermal insulative board and cold insulated cabinet, to play the adiabatic advantage of VIP completely.
In order to solve the problem, the invention provides a kind of thermal insulative board, it comprises: the expanded material of vacuum heat-insulating plate and this vacuum heat-insulating plate completely coated.
A kind of production method of thermal insulative board, it comprises: be located at by vacuum insulation plate level in the first die cavity, and bottom the surrounding being located at vacuum heat-insulating plate with the fritter that expanded material is prefabricated, and the bottom of vacuum heat-insulating plate and surrounding is made all to have space relative to each inwall in described first shape chamber; Then in described die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the first shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
The production method of the second thermal insulative board, it comprises: be vertical at by vacuum heat-insulating plate in the second die cavity, and on the bottom being located at vacuum heat-insulating plate with the fritter that expanded material is prefabricated and surrounding sidewall, has space with the bottom and surrounding that make this vacuum heat-insulating plate; Then in described second die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the second shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
The production method of the third thermal insulative board, it comprises: adopt flexible vacuum heat-insulating plate to be converted into hollow cylinder that transversal surface is hollow or O font; The vacuum heat-insulating plate of described hollow being located at a cross-sectional plane is in the 3rd three-back-shaped die cavity, and inside and outside side and the bottom of vacuum heat-insulating plate is located at the fritter that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate and bottom and the 3rd die cavity; Then in described 3rd die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 3rd shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type;
Or be located at by the vacuum heat-insulating plate of described O font in one the 4th die cavity, the 4th die cavity comprises exterior cylinder, is located at inner cylinder body in this exterior cylinder with one heart, and the gap between inside and outside cylinder forms the 4th die cavity; Be located at inside and outside side and the bottom of vacuum heat-insulating plate with the fritter that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate and bottom and the 4th die cavity; Then in described 4th die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 4th shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type.
For reducing the heat bridge effect in described thermal insulation layer further, two adjacent end portions of described vacuum heat-insulating plate are arc, and are affixed distribution inside and outside these two adjacent end portions.
The production method of the 4th kind of thermal insulative board, it comprises: the seamed edge of diaphragm seal material (also namely: encapsulating film) formation when sealing of vacuum heat-insulating plate is located at the end face central authorities of this vacuum heat-insulating plate, and form strip bulge, vacuum insulation plate level is located in a rectangular channel, the bottom of described projection is located at the fritter that described expanded material is prefabricated, or be plugged in this projection, all there is space with the surrounding and below that make this vacuum heat-insulating plate; In described rectangular channel, pour into light type high-molecule poly-mer and foaming agent, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation, and take shape in a plate body with this vacuum heat-insulating plate.
A kind of cold insulated cabinet, its casing and case lid comprise the thermal insulation layer that described thermal insulative board is formed.
Thermal insulation layer in the surrounding sidewall of described casing is four pieces of thermal insulative boards by rectangular arranged; Or adopt the thermal insulative board of integral type.
For adopting VIP to realize closed cold insulation, improve cold insulation effect, preferably, in the surrounding sidewall that described vacuum heat-insulating plate is located at described casing and base plate.
Optional embodiment is, the thermal insulation layer in the surrounding sidewall of described casing is integral type, and it comprises the four pieces of vacuum heat-insulating plates forming rectangle.
For reducing the heat bridge quantity in described thermal insulation layer, another optional embodiment is: the thermal insulation layer in the surrounding sidewall of described casing is integral type, and it only comprises one piece of vacuum heat-insulating plate, and this vacuum heat-insulating plate is square shape after three bendings; The block vacuum heat-insulating plate of bending part is curved.
For reducing the heat bridge effect in described thermal insulation layer further, the thermal insulation layer in the surrounding sidewall of described casing is integral type, and it only comprises one piece of vacuum heat-insulating plate, and this vacuum heat-insulating plate is square shape after three bendings; The block vacuum heat-insulating plate of bending part is curved; Vacuum heat-insulating plate two end limit is arc, and inside and outside distribution after intersecting, thus cut off the heat bridge on vacuum heat-insulating plate end limit.
Described vacuum heat-insulating plate has gap between two arc tips limits, has expanded material in this gap, directly contacts with the cambered surface or edge of avoiding described vacuum heat-insulating plate two arc tips limits, reduces the heat bridge effect in described thermal insulation layer further.
Described vacuum heat-insulating plate encapsulating film comprises: protective cover, vapour barrier and hot welding layer, and the material of described hot welding layer is ETFE, and its thickness is 15-95 μm.
Described protective cover uses the coextrusion stretch film (hereinafter referred to as coextrusion stretch film) nylon system resin and vinyl-vinyl alcohol copolymer and nylon system resin stacked gradually.This coextrusion stretch film does not use adhesives, but by coextrusion, the stacked nylon system resin with flexibility in the both sides of the ethene-vinylalcohol copolymer with gas barrier properties, thus give the feature of its flexibility and gas barrier properties.
Vapour barrier can use metallic paper, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
Above-mentioned core comprises: the glass fibre sheet (i.e. short chopping core) shaping by multilayer laminated employing wet paper manufacturing method, or the Blanket (i.e. dry method glass cotton core material) adopting dry method non-woven fabrics craft shaping, or the middle core that glass fibre sheet is formed with the lamination (namely mixing core) of Blanket; Superfine glass fiber cotton piece material is coated with in the both sides up and down of this middle core; Fibre diameter in described superfine glass fiber cotton piece material is 1-4um, length is 1-5mm.
Described superfine glass fiber cotton piece material employing wet paper manufacturing method is shaping or dry method non-woven fabrics craft is shaping.
The diameter forming the glass fibre of described Blanket is 4-20um, length is 4-15mm.
Preferred as one, described glass fibre sheet adopts the glass chopped silk that diameter is 6-13um, length is the production of 4-20mm fiber elongation method shaping.
Glass fibre layer distributed, major part and top surface being parallel in described glass fibre sheet and Blanket, the glass fibre random scattering in isoplanar, the thickness of this sheet material is even, is beneficial to vacuumize.
As the optional embodiment of another kind, described glass fibre sheet comprises: the glass fibre cotton that the glass chopped silk that 70-100wt%, diameter are 6-13um, length is 4-20mm, fiber elongation method is produced and 0-30wt%, diameter are 1.0-4um, length is 1-5mm, flame method is produced; Adopt the glass fibre cotton that flame method manufactures, diameter is thin, length is short, therefore the corresponding glass fibre cotton density obtained is comparatively large, and the core material of vacuum heat insulation plate coefficient of thermal conductivity made is lower, but if the glass fibre cotton adopting separately flame method to produce produces core material of vacuum heat insulation plate, manufacturing cost can be caused higher, and making the coefficient of thermal conductivity of the vacuum heat-insulating plate made be difficult to reach below 0.0025W/m.k, quality is unstable, poor controllability; The glass fibre cotton that the glass chopped silk adopting 70-100wt% fiber elongation method to produce in the present invention and 0-30wt% flame method are produced is as core material of vacuum heat insulation plate raw material, glass fibre cotton proportion is less, in terms of existing technologies, greatly reduce productive costs, improve constant product quality; The core material of vacuum heat insulation plate coefficient of thermal conductivity produced is at below 0.030W/m.k, and its heat baffle coefficient of thermal conductivity is low relative to the glass fibre cotton core adopting 100wt% flame method to produce, and heat insulation effect is better; Monolithic core thickness controls under 0.5-5mm(10kpa pressure), density domination is at 80kg/m3-200kg/m3, and compression ratio is slightly larger than the superfine glass fiber cotton core material adopting 100wt% flame method to produce, but can not have large impact to production technology.
As the optional embodiment of another kind, between adjacent two layers glass fibre sheet, or the plate being provided with the thick silicon dioxide bisque of 1-15mm between adjacent glass fibre sheet and Blanket or adopting silicon dioxide powder compressing; Silicon dioxide layer or plate and glass fibre used in combination, is beneficial to the effect of heat insulation and Combination property that improve core material of vacuum heat insulation plate further.
As further preferred, the most of glass fibre in described Blanket and the top surface being parallel of this Blanket distribute, and are beneficial to vacuumize.
The method for making of above-mentioned core, comprises the steps:
(1) cut-off footpath be 6-13um, length be 4-20mm fiber elongation method produce glass chopped silk; Or, get 70-100wt%, diameter be 6-13um, length is 4-20mm, fiber elongation method produce glass chopped silk and 0-30wt%, diameter be 1.0-4um, length be 1-5mm, flame method produce glass fibre cotton mixing;
(2) disperseed by above-mentioned glass fibre, then add water stirring, and send into pond with slurry thin up after stirring, dilute concentration is to 0.3-1.0wt%;
(3) slurry diluted is sent into flow box, the slurries layering that flow box flows out flows on a forming net, is evenly distributed with negative pressure suction inlet, to dewater under this forming net; Fiber laydown after dehydration on described forming net and thickness evenly, layer distributed and top surface being parallel, form the lamella of desired thickness, namely obtain wet plate;
(4) adopt pressure roller to roll above-mentioned wet plate, make its surfacing, thickness even;
(5) wet plate completing above-mentioned steps (4) is formed glass fibre sheet after dehydration, dry process;
(6) cut-off footpath is 1-4um, length is that the superfine glass fiber of 1-5mm is cotton, and repeats above-mentioned steps (2)-(4) and obtain wet plate, and this wet plate is formed superfine glass fiber cotton piece material after dehydration, dry process;
(7) by core in the middle of stacked for above-mentioned for multilayer glass fibre sheet rear formation; After superfine glass fiber cotton piece material is laid in the both sides up and down of this middle core, carry out cutting, make required core.
Adopt the core that said method is produced, the technique effect had: be beneficial to vacuum heat-insulating plate and vacuumize, to reduce the coefficient of thermal conductivity of vacuum heat-insulating plate, and can make the coefficient of thermal conductivity <0.0025W/m.k of the vacuum heat-insulating plate made.Core material of vacuum heat insulation plate forming process of the present invention is simple, cost is low, stable and controllable for quality.
Preferred as one, under the pressure condition of 10KPa, the thickness of the glass fibre sheet that described step (5) generates is 0.5-5mm, and the thickness of the superfine glass fiber cotton piece material in described step (5) is 0.2-2mm.The glass chopped filament diameter adopted owing to making central layer is 6-13um, and length is the glass chopped silk that 4-20mm fiber elongation method is produced, so under the pressure condition of 10KPa, described glass fibre sheet blank optimum thickness is 0.5-5mm.
Preferred as one, when in described step (3), forming net dewaters to glass layer, the speed of forming net is 12-30 m/min.Adopt this speed can ensure the wet plate even density produced by forming net by actv., marshalling, integral thickness is relatively uniform, improves core material of vacuum heat insulation plate end product quality.
Preferred as one, in the dilution of described step (2), add the hydroxylated cellulose of the 0.005-0.015% of above-mentioned glass chopped silk total weight, to reduce electrostatic effect.
Preferred as one, for generating the glass fibre sheet of said structure, the top surface inclination of described forming net is arranged; Be provided with the diversion channel be connected with described flow box above forming net, the base plate of this diversion channel and the top surface being parallel of described forming net, the base plate of diversion channel is evenly distributed with the narrow slit type nozzle vertical with the length direction of described forming net; Described negative pressure suction inlet is oppositely arranged with described narrow slit type nozzle respectively and is distributed in the side, downstream of each narrow slit type nozzle, the fiber be beneficial in slurries is evenly distributed on the end face of described forming net, and makes the surface that fiber fractionation isoplanar distributes, major part is parallel to glass fibre sheet.
As the preferred scheme of one, described forming net is conveyor type, is beneficial to continuous seepage.
As further preferred scheme, the direction of transfer of described forming net end face be from bottom to top, be beneficial to fiber laydown on described forming net and thickness evenly, the distribution of layering isoplanar, most of parallel.
A kind of vacuum heat-insulating plate, it comprises above-mentioned core material of vacuum heat insulation plate, and be coated on this core material of vacuum heat insulation plate, for realizing the aluminizer that vacuumizes or foil laminated film, or the bag be made up of above-mentioned aluminizer or foil laminated film.
The present invention has positive effect relative to prior art:
(1) thermal insulative board that provides of the present invention and production method thereof, takes shape in one, and forms the thermal insulation layer of described case lid, casing respectively by expanded material and described vacuum heat-insulating plate.Enter vacuum heat-insulating plate completely coated by described expanded material, therefore can significantly promote the wear-resistant of VIP and shock resistance, make VIP not easily damaged.And then on cold insulated cabinet, the adiabatic advantage of VIP can be played completely, significantly to improve cold insulation effect.The production technology of thermal insulative board is easy, with low cost and production efficiency is higher.
(2) hot welding layer forming VIP encapsulating film is permeability to air the best part in vacuum heat insulation material encapsulating film, and the character of hot welding layer has a significant impact for the long-term heat-proof quality of vacuum heat insulation material.Hot welding layer in VIP encapsulating film of the present invention adopts ETFE, relative to prior art, its temperature resistant range is larger, the temperature resistant range of film material can be made larger :-65 ° of C ~+150 ° C, and ETFE can make thin-walled material (its thickness can be 15-95 μm), has the characteristic of high flame retardant, low cigarette simultaneously; Pole is applicable in water, fuel, oil, acid or alkali environment, and the rotproofness of ETFE film is fabulous.ETFE is a kind of tough and tensile material, and various mechanical characteristics reaches good balance---anti-tear draw extremely strong, tensile strength is high, medium hardness, outstanding impact resistance, flexible life-span are long.ETFE is good dielectric substance, and dielectric strength is high, and specific inductance capacity is 2.6, and electrical resistivity is high, and dissipation factor is low, is only 0.003.Its low-k, the substantially constant when frequency and temperature traverse.The serviceability temperature scope of ETFE is more practical comparatively wide, and steady temperature is set as between-65 ° of C to+150 ° of C usually, and still hard outstanding when ultralow temperature, its brittle temperature is low to moderate-100 ° of C.In addition, ETFE also have passed several strict fire-resistant tests, as IEEE383, and obtains UL94V-0 grade.The physical attribute impact of ETFE on most of chemical substances is little, low to the penetrablility of common gases and aqueous vapor, is beneficial to the performance of the separation gas moisture improving film material, is therefore beneficial to the integrated quality of raising VIP and extends its life-span; The flame retardant effect of ETFE is better, and the flame retardance of the compound film material of production is also better;
(3), superfine glass fiber cotton core material is covered in short chopping or dry method glass felt core levels, namely a kind of composite core material is constituted, its technique effect obtained is: superfine glass fiber cotton core material due to the diameter of fiber own little, length is short, fiber is softer, be not easy to puncture film bag (namely avoiding the situation that diameter of the prior art is 6-13um, length is 4-20mm glass fibre easily punctures aluminizer bag), so VIP produced by applicable aluminizer; Which avoid short chopping core or dry method Chopped Strand Mat core is large-area contacts with film bag, effectively prevent the risk of fiber puncture film bag; Foil laminated film can certainly be adopted as required to produce VIP;
(4), described composite core material can be suitable for polytype film material and produce VIP; By the arranging scheme of this composite core material, breach the restriction that thick diameter core can only use foil laminated film to produce, the VIP plate of actual needs produced by composite core material film material of can arranging in pairs or groups arbitrarily;
(5), short chopping core of the prior art and dry method Chopped Strand Mat core all more fluffy, in order to promote short chopping and dry method Chopped Strand Mat core performance, adhesive agent can be reduced in process of production as far as possible, so short chopping core and dry method Chopped Strand Mat core easily cause central layer damaged in process of production, short chopping is dropped, not easily pack, the phenomenons such as finished surface unfairness, and adopt superfine glass fiber cotton can effectively address these problems after levels parcel.
Accompanying drawing explanation
For making the present invention more clearly be understood, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is the shaping schematic view of the thermal insulation layer of the embodiment of the present invention 1;
Fig. 2 is the shaping schematic diagram of the thermal insulation layer of the embodiment of the present invention 2;
Fig. 3 is the shaping schematic diagram of the thermal insulation layer of the embodiment of the present invention 3;
Fig. 4 is the schematic diagram of a kind of embodiment variant of embodiment 3;
Fig. 5 is the shaping schematic diagram of the thermal insulation layer of the embodiment of the present invention 4;
Fig. 6 is the structural representation of the vacuum heat-insulating plate in the embodiment of the present invention 5;
Fig. 7 and 8 is the shaping schematic diagram of the thermal insulation layer in the embodiment of the present invention 5;
Fig. 9 is the structural representation of cold insulated cabinet;
Figure 10 is the schematic diagram of the embodiment variant of embodiment 3.
Detailed description of the invention
Embodiment 1
A kind of thermal insulative board, it comprises: the expanded material of vacuum heat-insulating plate and this vacuum heat-insulating plate completely coated.
As Fig. 1, the production method of above-mentioned thermal insulative board, it comprises: vacuum heat-insulating plate 3 level be located in the first die cavity 1, and be located at bottom the surrounding of vacuum heat-insulating plate 3 with the fritter 2 that expanded material is prefabricated, and the bottom of vacuum heat-insulating plate 3 and surrounding is made all to have space relative to each inwall in described first shape chamber; Then in the first die cavity 1, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the first shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
Embodiment 2
On the basis of embodiment 1, there is following modification in the present embodiment:
As Fig. 2, the production method of described thermal insulative board, it comprises: be vertical at by vacuum heat-insulating plate 3 in second die cavity 10, and be located at the fritter 2 that expanded material is prefabricated that (general employing is adhesively fixed, such as adopt Acrylic Foam Tape paper or glue) on the bottom of vacuum heat-insulating plate and surrounding sidewall, with the bottom and surrounding that make this vacuum heat-insulating plate 3, there is space; Then in described second die cavity 10, pour into light type high-molecule poly-mer and foaming agent, and in the open top in the second shape chamber 10 top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
Embodiment 3
On the basis of embodiment 1, there is following modification in the present embodiment:
As Fig. 3, the production method of thermal insulative board, it comprises: adopt flexible vacuum heat-insulating plate 3 to be converted into the hollow cylinder that transversal surface is hollow; The vacuum heat-insulating plate of described hollow being located at a cross-sectional plane is in the 3rd three-back-shaped die cavity 101, and inside and outside side and the bottom of vacuum heat-insulating plate 3 is located at the fritter 2 that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate 3 and bottom and the 3rd die cavity 101; Then in described 3rd die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 3rd shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type.
As Fig. 4, for reducing the heat bridge effect in described thermal insulation layer further, two adjacent end portions of described vacuum heat-insulating plate are arc, and are affixed distribution inside and outside these two adjacent end portions.
Or, as Figure 10, described vacuum heat-insulating plate 3 is located at respectively in four lateral space of described the 3rd three-back-shaped die cavity 101, and inside and outside side and the bottom of each vacuum heat-insulating plate 3 is located at the fritter 2 that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of each vacuum heat-insulating plate 3 and bottom and the 3rd die cavity 101; Then in described 3rd die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 3rd shape chamber top cover, to make the complete coated each vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type.
Embodiment 4
On the basis of embodiment 1, there is following modification in the present embodiment:
As Fig. 5, be located at by the vacuum heat-insulating plate of described O font in one the 4th die cavity 102, the 4th die cavity 102 comprises exterior cylinder 103, is located at inner cylinder body 104 in this exterior cylinder with one heart, and the gap between inside and outside cylinder forms the 4th die cavity 102; Be located at inside and outside side and the bottom of vacuum heat-insulating plate with the fritter 2 that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate 3 and bottom and the 4th die cavity 102; Then in described 4th die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 4th shape chamber 102 top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type.
Embodiment 5
On the basis of embodiment 1, there is following modification in the present embodiment:
As Fig. 6 to 8, the production method of thermal insulative board, it comprises: the seamed edge of diaphragm seal material (also namely: encapsulating film) formation when sealing of vacuum heat-insulating plate is located at the end face central authorities of this vacuum heat-insulating plate, and form strip bulge 3-1, as Fig. 6, vacuum insulation plate level is located in a rectangular channel, is located at the bottom of described projection with the fritter 2 that described expanded material is prefabricated, or be plugged in this projection, all there is space with the surrounding and below that make this vacuum heat-insulating plate; In described rectangular channel, pour into light type high-molecule poly-mer and foaming agent, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation, and take shape in a plate body with this vacuum heat-insulating plate.
Embodiment 6
As Fig. 9, the cold insulated cabinet of the present embodiment, comprising: case lid 4, casing 5, is provided with the thermal insulation layer that one of described embodiment 1-5 is described in each wall body of casing 4.
Can scheme be preferably that the thermal insulation layer in the surrounding sidewall of described casing adopts the thermal insulative board of the integral type described in embodiment 3 or 4 to be located in the surrounding sidewall of described casing.Case lid 5 and base plate adopt another block thermal insulation layer.
Embodiment 7
For making the vacuum heat-insulating plate encapsulating film in one of above-described embodiment 1-6; have the advantages that temperature resistant range is larger and fire-retardant; the encapsulating film of the present embodiment comprises: protective cover, vapour barrier and hot welding layer, and described hot welding layer is ETFE material layer, and its thickness is 15-95 μm.
Described protective cover uses the coextrusion stretch film (hereinafter referred to as coextrusion stretch film) nylon system resin and vinyl-vinyl alcohol copolymer and nylon system resin stacked gradually.This coextrusion stretch film does not use adhesives, but by coextrusion, the stacked nylon system resin with flexibility in the both sides of the ethene-vinylalcohol copolymer with gas barrier properties, thus give the feature of its flexibility and gas barrier properties.
Vapour barrier can use metallic paper, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
The hot welding layer forming vacuum heat insulation material encapsulating film of the present invention is permeability to air the best part in vacuum heat insulation material encapsulating film, and the character of hot welding layer has a significant impact for the long-term heat-proof quality of vacuum heat insulation material.Consider the stability sealing quality in reduced pressure sealing operation or the problem suppressing to be invaded by heat-fused portion end face gas, the preferred 15-95 μm of thickness of hot welding layer.When the thickness of hot welding layer is lower than 15 μm, be difficult to fully to obtain the binding power that thermal welding brings, and more than 95 μm, then cost raises or gas is invaded by the end of hot welding layer, and degree of vacuum is reduced, therefore not preferred.
The laminating method forming the protective cover of vacuum heat insulation material encapsulating film of the present invention, vapour barrier and each layer of hot welding layer can adopt known method, such as, can adopt: the method using the dry lamination of biliquid curing type carbamate system adhesives etc., extrusion coated, heat lamination etc.As required, arbitrary layer can also apply binding layer (anchor coat) or printing color layer, priming coat, external coating etc.
The vapour barrier used in vacuum heat insulation material encapsulating film of the present invention can use metallic paper, or defines the plastic film of thin layer of metal or metallic oxide, or by the material of their multiple combinations.
Consider from the various angle such as gas barrier properties or economy, metallic paper can use known aluminium foil especially ideally.The preferred 5-50 μm of thickness of aluminium foil, further preferred 5-30 μm.Usual aluminium foil is thinning, and pin hole easily increases, and thickening then heat leak increases, and therefore heat-proof quality is deteriorated, not preferably.
The plastic film defining the thin layer of metal or metallic oxide is such as on polyethylene terephthalate film or EVOH film, forms the thin layer of the single or multiple lift containing the metal such as aluminium or the metallic oxide such as silicon dioxide, aluminium oxide (separately or their compound).
With define metal or metallic oxide thin layer plastic film compared with, vapour barrier of the present invention preferably uses metallic paper, particularly aluminium foil.
The manufacture method of the vacuum heat insulation material using vacuum heat insulation material encapsulating film of the present invention to obtain can adopt known method, such as by thermal welding between the hot welding layer of vacuum heat insulation material encapsulating film, be made into bag, fill core, then the air in bag is discharged, form vacuum state, by peristome thermal welding, can vacuum heat insulation material be obtained thus.When making the bag of filling core, two panels film can be combined, between arbitrary three limits are by hot welding layer, carry out thermal welding, also a slice film can be folded, thermal welding between arbitrary both sides are by hot welding layer.
Core can use known material, such as, be preferably selected from least one in glass wool, glass fibre, alumina fibre, monox-alumina fibre, silicon dioxide fibre, silicon carbide fibre, asbestos, powdery polyurethane, silicon dioxide, polystyrene, silicic acid calcium or polyurethane foaming body.
The core of above-described embodiment 1 or 2 or 3 comprises the middle core be made up of the glass fibre sheet (i.e. short chopping core) that 10 to the 30 employing wet paper manufacturing method folded layer by layer are shaping; At least one deck superfine glass fiber cotton piece material is coated with completely in the both sides up and down of this middle core; Fibre diameter in described superfine glass fiber cotton piece material is 1-4um, length is 1-5mm, the coefficient of thermal conductivity≤0.0025W/m.k of the vacuum heat-insulating plate be made up of this core.This core can adopt aluminizer to carry out encapsulating and fiber can be avoided to pierce through aluminizer.
As a kind of variable embodiment, described middle core is located in the bag be made up of above-mentioned superfine glass fiber cotton piece material, or the edge of the described middle core of above-mentioned superfine glass fiber cotton piece material parcel, with avoid the edge of glass fibre sheet directly and aluminizer or foil laminated film come in contact.
Described glass fibre sheet is 6-13um by adopting diameter, and length is that the glass chopped silk that 4-20mm fiber elongation method is produced is shaping through wet paper manufacturing method.
The method for making of above-mentioned core material of vacuum heat insulation plate, the concrete steps of this method for making are as follows:
(A) cut-off footpath be 6-13um, length be 4-20mm fiber elongation method produce glass chopped silk;
(B) disperseed by above-mentioned glass fibre, then add water stirring, sends into pond with slurry thin up after stirring, and dilute concentration to 0.8wt%, and adds the hydroxylated cellulose of 0.012% of above-mentioned two kinds of glass fibre total weightes, to reduce electrostatic effect;
(C) glass fiber slurry diluted feeding is stored stock tank;
(D) slurry stored in stock tank is sent into flow box, the slurries that flow box flows out flow on forming net by the layering of multilayer nozzle, the blower fan suction inlet (i.e. negative pressure suction inlet) corresponding with nozzle is housed below forming net and carries out batch vacuum dehydration.Fiber laydown after dehydration is formed evenly, arranges orderly lamella on forming net, namely makes glass chopped silk wet plate; When in this step, forming net dewaters to glass fiber slurry, the speed of forming net is 20-25 m/min;
(E) adopt pressure roller to carry out transverse direction to glass fibre wet plate to roll, make surfacing, the thickness of glass fibre wet plate is adjusted simultaneously, make glass fibre wet plate thickness be adjusted to 1.5mm;
(F) the glass fibre wet plate completing shaping is phoresied in the belt conveyor of negative pressure of vacuum by glass fibre wet plate 60% moisture removal, make glass fibre wet plate water content control below 40%;
(G) then the glass fibre wet plate removing moisture is sent into baking and curing in baking box, baking the temperature inside the box controls at 280 degrees Celsius, and baking time is 15 minutes; Toast rear formation fiber glass core sheet material;
(H) cut-off footpath is 1-4um, length is that the superfine glass fiber of 1-5mm is cotton, and repeats above-mentioned steps (B)-(F) and obtain wet plate, and this wet plate is sent into baking and curing in baking box, and baking the temperature inside the box controls at 280 degrees Celsius, and baking time is 15 minutes; Toast rear formation superfine glass fiber cotton piece material;
(I) according to production requirement by stacked for glass fibre sheet described in multilayer and form in the middle of core; After superfine glass fiber cotton piece material is laid in the both sides up and down of this middle core, carry out cutting, cut into 600mm × 600mm, namely obtain core material of vacuum heat insulation plate finished product.
The top surface inclination of described forming net is arranged; Be provided with the diversion channel be connected with described flow box above forming net, the base plate of this diversion channel and the top surface being parallel of described forming net, the base plate of diversion channel is evenly distributed with the narrow slit type nozzle that the length direction of multiple and described forming net is vertical; Each negative pressure suction inlet is oppositely arranged with described narrow slit type nozzle respectively and is distributed in the side, downstream of each narrow slit type nozzle, and the fiber be beneficial in slurries is evenly distributed on the end face of described forming net.The width of narrow slit type nozzle is 1-8mm.
Described forming net is conveyor type, is beneficial to continuous seepage; The direction of transfer of forming net end face is from bottom to top, be beneficial to fiber laydown on described forming net and thickness evenly, the top surface being parallel of layer distributed, major part and glass fibre sheet.
Alternatively, in described step (I), between adjacent two layers glass fibre sheet, or the plate 10 being provided with the thick silicon dioxide bisque of 10mm between adjacent glass fibre sheet and superfine glass fiber cotton piece material or adopting silicon dioxide powder compressing.
Embodiment 8
On the basis of described embodiment, the core material of vacuum heat insulation plate of this example has following modification:
Described middle core is by adopting compound glass fibre sheet material shaping through wet paper manufacturing method after glass chopped silk and glass fibre cotton Homogeneous phase mixing, the single-layer glass fiber felt adopting dry method non-woven fabrics craft shaping with at least one deck is alternately laminated shaping, then described superfine glass fiber cotton piece material is all laid in the upper and lower both sides of middle core, the coefficient of thermal conductivity≤0.0025W/m.k of the vacuum heat-insulating plate be made up of this core.
Embodiment 9
On the basis of above-described embodiment, the core material of vacuum heat insulation plate of this example has following modification:
The middle core of the core material of vacuum heat insulation plate of this example is formed by adopting the shaping Blanket of dry method non-woven fabrics craft, then described superfine glass fiber cotton piece material is all laid in these upper and lower both sides of middle core, the coefficient of thermal conductivity≤0.0030W/m.k of the vacuum heat-insulating plate be made up of this core.
Above-mentioned Blanket adopts centrifugal injection method (abbreviation centrifugal method) to produce glass microfiber technique; Centrifugal method is produced glass microfiber its production technology and is comprised: raw material system, found system, fiberizing system, burning gases mixing feed system etc.Raw material sends into glass melter according to after proportioning mixing, and the glass metal melted flows out through the bushing of material road end, enters sedimentator.Under the centrifuge of High Rotation Speed drives, nearly ten thousand strands of glass threads that sedimentator sidewall throws away, by further drawing-off, the fiber cutting into certain length under the high temperature and high speed flame that combustion chamber produces.First this technique be throw away initial glass thread in the hole of spinning head perisporium, is then that the high temperature and high speed flame that combustion chamber produces carries out redrawing to glass thread.
Embodiment 10
A kind of vacuum heat-insulating plate, it comprises the described core material of vacuum heat insulation plate of one of above-described embodiment, and be coated on this core material of vacuum heat insulation plate, for realizing the aluminizer that vacuumizes or foil laminated film, or the bag for vacuumizing be made up of above-mentioned aluminizer or foil laminated film.
That described aluminizer comprises about 2 to 5 layers laminations, that 12um is thick polyester aluminium coated (VMPET), and be in the ETFE layer bottom each polyester aluminium coated (VMPET), 50um is thick.
Described foil laminated film comprises successively the nylon layer (15um) of up and down lamination, polyester aluminium coated (12um), aluminum layer (7um) and ETFE layer (50um).
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (8)
1. a thermal insulative board, is characterized in that comprising: the expanded material of vacuum heat-insulating plate and this vacuum heat-insulating plate completely coated.
2. the production method of a thermal insulative board, it is characterized in that comprising: vacuum insulation plate level is located in the first die cavity, and bottom the surrounding being located at vacuum heat-insulating plate with the fritter that expanded material is prefabricated, and the bottom of vacuum heat-insulating plate and surrounding is made all to have space relative to each inwall in described first shape chamber; Then in described die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the first shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
3. the production method of a thermal insulative board, it is characterized in that comprising: vacuum heat-insulating plate is vertical in the second die cavity, and on the bottom being located at vacuum heat-insulating plate with the fritter that expanded material is prefabricated and surrounding sidewall, with the bottom and surrounding that make this vacuum heat-insulating plate, there is space; Then in described second die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the second shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out thermal insulative board.
4. a production method for thermal insulative board, is characterized in that: adopt flexible vacuum heat-insulating plate to be converted into hollow cylinder that transversal surface is hollow or O font;
The vacuum heat-insulating plate of described hollow being located at a cross-sectional plane is in the 3rd three-back-shaped die cavity, and inside and outside side and the bottom of vacuum heat-insulating plate is located at the fritter that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate and bottom and the 3rd die cavity; Then in described 3rd die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 3rd shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type;
Or be located at by the vacuum heat-insulating plate of described O font in one the 4th die cavity, the 4th die cavity comprises exterior cylinder, is located at inner cylinder body in this exterior cylinder with one heart, and the gap between inside and outside cylinder forms the 4th die cavity; Be located at inside and outside side and the bottom of vacuum heat-insulating plate with the fritter that expanded material is prefabricated, all there is space to make the inwall of the inside and outside side of vacuum heat-insulating plate and bottom and the 4th die cavity; Then in described 4th die cavity, pour into light type high-molecule poly-mer and foaming agent, and on the opening in the 4th shape chamber top cover, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation; Open top cover after shaping, take out the thermal insulative board of integral type.
5. production method according to claim 4, is characterized in that: two adjacent end portions of described vacuum heat-insulating plate are arc, and is affixed distribution inside and outside these two adjacent end portions.
6. the production method of a thermal insulative board, it is characterized in that comprising: the seamed edge of diaphragm seal material formation when sealing of vacuum heat-insulating plate is located at the end face central authorities of this vacuum heat-insulating plate, and form strip bulge, vacuum insulation plate level is located in a rectangular channel, the bottom of described projection is located at the fritter that described expanded material is prefabricated, or be plugged in this projection, all there is space with the surrounding and below that make this vacuum heat-insulating plate; In described rectangular channel, pour into light type high-molecule poly-mer and foaming agent, to make the complete coated described vacuum heat-insulating plate of the expanded material of generation, and take shape in a plate body with this vacuum heat-insulating plate.
7. a cold insulated cabinet, comprising: casing and case lid, is characterized in that: casing and case lid comprise the thermal insulation layer that the described thermal insulative board of one of claim 1-6 is formed.
8. cold insulated cabinet according to claim 7, is characterized in that: the thermal insulation layer in the surrounding sidewall of described casing is four pieces of thermal insulative boards by rectangular arranged; Or adopt the thermal insulative board of integral type according to claim 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810778299.1A CN109110304A (en) | 2014-02-26 | 2014-12-26 | A kind of cold insulated cabinet and its production method |
| CN201410830627.XA CN104859964B (en) | 2014-02-26 | 2014-12-26 | A kind of thermal insulative board, the production method of thermal insulative board and cold insulated cabinet |
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| CN201420846917.9U Active CN204433423U (en) | 2014-02-26 | 2014-12-26 | A kind of cold insulated cabinet |
| CN201410830627.XA Active CN104859964B (en) | 2014-02-26 | 2014-12-26 | A kind of thermal insulative board, the production method of thermal insulative board and cold insulated cabinet |
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| CN107150468A (en) * | 2016-03-04 | 2017-09-12 | 江苏山由帝奥节能新材股份有限公司 | Incubator, metope or the floor plate of heat insulating thermal preserving board and the application warming plate |
| CN107323878A (en) * | 2017-06-29 | 2017-11-07 | 福建赛特新材股份有限公司 | A kind of manufacture method of cold chain heat insulation box and cold chain heat insulation box |
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| CN109110304A (en) * | 2014-02-26 | 2019-01-01 | 糜玥崎 | A kind of cold insulated cabinet and its production method |
| CN106051380B (en) * | 2016-07-28 | 2018-11-06 | 江苏山由帝奥节能新材股份有限公司 | A kind of vacuum heat-insulating plate, cold insulated cabinet and its production method |
| JP7324730B2 (en) * | 2020-03-23 | 2023-08-10 | 日立グローバルライフソリューションズ株式会社 | Refrigerator and manufacturing method |
| CN113650914B (en) * | 2021-07-22 | 2022-11-04 | 上海百奥泉国际冷链物流有限公司 | Cold chain transport box and cold chain transport method thereof |
| CN113636182A (en) * | 2021-08-11 | 2021-11-12 | 北京五英伟业泡塑材料有限公司 | Composite heat insulation box and forming process thereof |
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| CN107150468A (en) * | 2016-03-04 | 2017-09-12 | 江苏山由帝奥节能新材股份有限公司 | Incubator, metope or the floor plate of heat insulating thermal preserving board and the application warming plate |
| CN107323878A (en) * | 2017-06-29 | 2017-11-07 | 福建赛特新材股份有限公司 | A kind of manufacture method of cold chain heat insulation box and cold chain heat insulation box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN204675121U (en) | 2015-09-30 |
| CN109110304A (en) | 2019-01-01 |
| CN204433423U (en) | 2015-07-01 |
| CN104859964B (en) | 2018-07-03 |
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