CN110455035A - A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method - Google Patents
A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method Download PDFInfo
- Publication number
- CN110455035A CN110455035A CN201910711705.7A CN201910711705A CN110455035A CN 110455035 A CN110455035 A CN 110455035A CN 201910711705 A CN201910711705 A CN 201910711705A CN 110455035 A CN110455035 A CN 110455035A
- Authority
- CN
- China
- Prior art keywords
- air duct
- foreboard
- refrigerator freezing
- freezing air
- product
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
Abstract
The present invention discloses a kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method, which comprises the following steps: refrigerator freezing air duct foreboard Incoming Quality Control；Foaming mould is examined before preparation produces；Refrigerator freezing air duct foreboard is fixedly installed in mold；Casting molding；Semi-finished product are made in opening mold；Ageing treatment；Repairing treatment；Arrange blanking；Product is examined to obtain the finished product of refrigerator freezing air duct foreboard and polyurethane foaming materials synthesis.The present invention solves the stickup PE insulating sponge at the foreboard of refrigerator freezing air duct, the PE insulating sponge pasted herein is needed to carry out multiple coating glue, due to PE insulating sponge self-characteristic, so that during subsequent long-term storage and bumpy transport, it will lead to PE insulating sponge end stress opening, PE insulating sponge and the problem of the degumming of refrigerator freezing air duct foreboard location for paste.
Description
Technical field
The present invention relates to the preparation method field of refrigerator freezing ducting assembly, a kind of refrigerator freezing air duct and poly- is particularly belonged to
Ammoniacum foamed material sintetics preparation method.
Background technique
Air cooling type refrigerator in refrigerator industry at present, the realization of refrigerating function are all to force refrigerator using blower
Interior air carries out heat convection, is that each space in refrigerator is blown by the way that corresponding ducting assembly is arranged, air-cooled to realize
The integrally cooling of refrigerator.The refrigeration system of such air cooling type refrigerator mostly uses greatly ducting assembly to carry out cold wind circulation, realizes refrigeration
Effect.It is matched with the freezing region of such air cooling type refrigerator, by pasting PE above the foreboard in refrigerator freezing ducting assembly
Sponge is kept the temperature, to reduce the frosting being likely to occur on the foreboard of refrigerator freezing air duct, while guaranteeing the water for excluding condensation in time.
For on the foreboard of refrigerator freezing air duct paste PE insulating sponge processing when, for the PE insulating sponge needs pasted herein
Multiple coating glue is carried out, while also the test of coated sponge colloidality, detection are carried out to the PE insulating sponge be gummed herein after
Viscosity is tested, and after test passes, side is qualified products.Since the hardness of PE insulating sponge material itself is big, screen resilience is big.So that
Refrigerator freezing ducting assembly product after completing according to above-mentioned operation, in subsequent long-term storage or the process of bumpy transport
In, it will lead to the PE insulating sponge end above such product and opened vulnerable to power, PE insulating sponge and refrigerator freezing air duct foreboard
Location for paste degumming.
Summary of the invention
It is an object of the present invention to provide a kind of refrigerator freezing air ducts and polyurethane foaming materials synthesis product preparation method, can solve
The problem of being mentioned in certainly above-mentioned background technique.It is suitble to the popularization and use when making refrigerator freezing ducting assembly.
The technical solution adopted in the present invention is as follows:
A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method, which is characterized in that including specific
Step are as follows:
Step 1: refrigerator freezing air duct foreboard Incoming Quality Control: Incoming Quality Control is carried out to the foreboard in refrigerator freezing air duct, mainly
Examine the preceding panel products in refrigerator freezing air duct, outer surface transition portion and whole smooth outer surface, no injection molding is bad, appearance without
All sizes of scuffing, trace, impression, the preceding panel products in refrigerator freezing air duct are mutually coincide with drawing, refrigerator freezing air duct
Preceding panel products accessory trial assembly no-float corresponding with refrigerator；
Step 2: inspection to foaming mould before preparation production: to will be on foaming machine before production, the foaming that uses
Mold is tested, and the size looked into and survey the mold is examined, it is ensured that meets mold drawing requirement, the size of mold and ice to be produced
Size is mutually matched at the synthesis of case freezing air duct foreboard polyurethane foaming material, and die surface is without damaging, gouge, crack, collapse
The defect collapsed；
Step 3: refrigerator freezing air duct foreboard is fixedly installed in qualified mould: will examine qualified refrigerator cold in step 1
Freeze air duct foreboard, be fixedly mounted on above qualified mould described in step 2, starting produces used cylinder, and cylinder pushes
Cylinder briquetting will examine qualified refrigerator freezing air duct foreboard in step 1, be pressed together in qualified mould described in step 2
Face；Ensure to examine qualified refrigerator freezing air duct foreboard in step 1 and is pressed together on the patch of qualified mould surface described in step 2
It closes close；
Step 4: it casting molding: on the matched operation pages of foaming machine, sets and is mutually matched with product to be produced
Foaming machine operating parameter, while manufacturing machine hand control cabinet matched with foaming machine is adjusted to automatic running pattern, starting step
The corresponding foaming machine program pushbutton of qualified mould described in rapid three, foamed material in foaming machine is by the fortune good according to program setting
Row parameter, the corresponding position of the qualified mould described in step 3 are poured, mold production and processing；
Step 5: it opens qualified mould and semi-finished product: conjunction of the foaming machine described in step 4 described in step 3 is made
Polyurethane foaming material in the corresponding position of grid mold after foaming, after solidifying on the foreboard of refrigerator freezing air duct, opening mold,
The product for taking out refrigerator freezing air duct foreboard and polyurethane foaming materials synthesis, according to the drawing requirement for producing the product, with sanction
Paper knife cuts off foamed material extra around the product；
Step 6: ageing treatment: semi-finished product obtained after qualified mould will be opened in step 5, are neatly placed in semi-finished product
On turnover rack, mark is pasted on different turnover rack of semi-finished product, opens the tool of qualified mould in mark above-noted registration
The body time；It is static to place 24 hours under normal temperature state by the semi-finished product above the different turnover rack of semi-finished product, it is put into baking
Room heat treatment, the temperature range of the drying chamber are 96 DEG C~105 DEG C, and the semi-finished product above turnover rack of semi-finished product are in drying chamber
The time of reason is 2 hours, and when such as encountering air humidity greater than 55%, the semi-finished product above turnover rack of semi-finished product are handled in drying chamber
Time be 3 hours, after heating in drying chamber, checked above turnover rack of semi-finished product in semi-finished product one by one, polyurethane foaming
Whether there is or not vacuole, bubbling, deformation defects on the foreboard of refrigerator freezing air duct for material, when encountering defect, in fault location adhesive paper glue
Band is marked；
Step 7: repairing treatment: the product of free bubble or bubbly defect will be marked in step 6, be integrally placed in patcher
Make above platform, takes out suitable foamed material mixing and be filled in the colloid-injecting gun cleaned up, vacuole or drum are poured by colloid-injecting gun
In bubble, after the foamed material solidification in vacuole or bubbling, extra foamed material is rooted out with perching knife, repairing treatment is completed；
Step 8: it arranges blanking: being required according to product drawing, to the polyurethane foaming material on the foreboard of refrigerator freezing air duct
Cutting arrangement is carried out, while ensuring that cut place is smooth, smooth, the whole place that removes contamination is carried out to refrigerator freezing air duct front plane surface
Reason, it is ensured that outer surface transition portion and whole smooth outer surface；
Step 9: product is examined to obtain the finished product of refrigerator freezing air duct foreboard and polyurethane foaming materials synthesis: to step
Rapid eight complete after product, required according to product drawing and the requirement of product external surfaces, carry out overall inspection, it is qualified to examine
Afterwards, the finished product of refrigerator freezing air duct foreboard and polyurethane foaming materials synthesis is obtained, thus obtained such finished product is
Refrigerator freezing ducting assembly.
Compared with the prior art, beneficial effects of the present invention are as follows:
Compared with the prior art, the present invention solves the stickup PE insulating sponge at the foreboard of refrigerator freezing air duct, for this
The PE insulating sponge that place is pasted needs to carry out multiple coating glue, due to PE insulating sponge self-characteristic, so that subsequent long-term
During storage and bumpy transport, PE insulating sponge end stress opening, PE insulating sponge and refrigerator freezing air duct will lead to
The problem of foreboard location for paste degumming.
The refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method that the present invention uses, production technology behaviour
Make simply, high production efficiency, using effect is good, refrigerator freezing air duct foreboard and polyurethane resin foamed material integrator, no
Degumming phenomenon caused by the presence of the stickup PE sponge of refrigerator freezing air duct currently on the market, and polyurethane resin foamed material has
Lightweight, waterproof, fire prevention, anti-corrosion, wearability, oil resistivity, fatigue durability, does pinking and extremely strong cohesive force, city at heat-insulated, heat preservation
Field prospect is boundless.
Detailed description of the invention
Fig. 1 is the product of one of refrigerator freezing air duct of the present invention foreboard and polyurethane foaming materials synthesis product model
Overall schematic；
Fig. 2 is refrigerator freezing air duct of the present invention foreboard not and before polyurethane foaming materials synthesis, refrigerator freezing air duct foreboard
Overall schematic；
Fig. 3 is that cylinder briquetting presses refrigerator freezing air duct foreboard and mold schematic diagram in step 3 of the present invention.
Remarks explanation: 1, refrigerator freezing air duct foreboard；2, polyurethane foaming material；3, cylinder；4, cylinder briquetting；5, it is qualified
Mold.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by specific embodiment to this
Invention is described further, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts belongs to invention protection
Range.
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.
A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method, which is characterized in that including specific
Step are as follows:
Step 1: refrigerator freezing air duct foreboard (1) Incoming Quality Control: carrying out Incoming Quality Control to refrigerator freezing air duct foreboard (1),
Main test refrigerator freezing air duct foreboard (1) product, outer surface transition portion and whole smooth outer surface, no injection molding is bad, outside
Sight face mutually coincide without scuffing, trace, impression, all sizes of refrigerator freezing air duct foreboard (1) product with drawing, refrigerator freezing
Air duct foreboard (1) product accessory trial assembly no-float corresponding with refrigerator；
Step 2: inspection to foaming mould before preparation production: to will be on foaming machine before production, the foaming that uses
Mold is tested, and the size looked into and survey the mold is examined, it is ensured that meets mold drawing requirement, the size of mold and ice to be produced
Size is mutually matched at the synthesis of case freezing air duct foreboard (1) polyurethane foaming material (2), and die surface is without damaging, gouge, open
It splits, the defect of avalanche；
Step 3: refrigerator freezing air duct foreboard (1) is fixedly installed in qualified mould (5): qualification will be examined in step 1
Refrigerator freezing air duct foreboard (1) is fixedly mounted on qualified mould described in step 2 (5) above, used in starting production
Cylinder (3), cylinder (3) pusher cylinder briquetting (4) will be examined qualified refrigerator freezing air duct foreboard (1), be pressed together in step 1
Qualified mould described in step 2 (5) is above；Ensure to examine qualified refrigerator freezing air duct foreboard (1) and pressing in step 1
Qualified mould (5) surface fitting described in step 2 is close；
Step 4: it casting molding: on the matched operation pages of foaming machine, sets and is mutually matched with product to be produced
Foaming machine operating parameter, while manufacturing machine hand control cabinet matched with foaming machine is adjusted to automatic running pattern, starting step
The corresponding foaming machine program pushbutton of qualified mould described in rapid three (5), the foamed material in foaming machine will be good according to program setting
Operating parameter, the corresponding position of the qualified mould (5) described in step 3 is poured, molds production and processing；
Step 5: open qualified mould (5) and semi-finished product are made: foaming machine described in step 4 is described in step 3
Polyurethane foaming material (2) in the corresponding position of qualified mould (5) after foaming, solidifies on refrigerator freezing air duct foreboard (1)
Afterwards, qualified mould (5) are opened, takes out the product of refrigerator freezing air duct foreboard (1) and polyurethane foaming material (2) synthesis, according to
The drawing requirement for producing the product cuts off foamed material extra around the product with paper knife；
Step 6: ageing treatment: qualified mould (5) semi-finished product obtained afterwards will be opened in step 5, are neatly placed in half
On finished product turnover rack, mark is pasted on different turnover rack of semi-finished product, opens qualified mould in mark above-noted registration
(5) the specific time；It is static to place 24 hours under normal temperature state by the semi-finished product above the different turnover rack of semi-finished product,
It is put into drying chamber heat treatment, the temperature range of the drying chamber is 96 DEG C~105 DEG C, and the semi-finished product above turnover rack of semi-finished product are drying
The time handled in room is 2 hours, and when such as encountering air humidity greater than 55%, the semi-finished product above turnover rack of semi-finished product are in drying chamber
The time of interior processing is 3 hours, after heating in drying chamber, is checked above turnover rack of semi-finished product in semi-finished product one by one, poly- ammonia
Whether there is or not vacuole, bubbling, deformation defects above in refrigerator freezing air duct foreboard (1) for rouge foamed material (2), when encountering defect, are lacking
It falls into place and pastes paper self-adhesive tape, be marked；The polyurethane foaming material (2) is produced by Jinan Ya Bu mechanical equipment Co., Ltd,
Model PU-SDP2.
Step 7: repairing treatment: the product of free bubble or bubbly defect will be marked in step 6, be integrally placed in patcher
Make above platform, takes out suitable foamed material mixing and be filled in the colloid-injecting gun cleaned up, vacuole or drum are poured by colloid-injecting gun
In bubble, after the foamed material solidification in vacuole or bubbling, extra foamed material is rooted out with perching knife, repairing treatment is completed；
Step 8: it arranges blanking: being required according to product drawing, to the polyurethane foaming on refrigerator freezing air duct foreboard (1)
Material (2) carries out cutting arrangement, while ensuring that cut place is smooth, smooth, carries out to refrigerator freezing air duct foreboard (1) surface whole
It removes contamination processing, it is ensured that outer surface transition portion and whole smooth outer surface；
Step 9: examine product obtain refrigerator freezing air duct foreboard (1) and polyurethane foaming material (2) synthesis production at
Product: the product after completing to step 8 carries out overall inspection according to product drawing requirement and the requirement of product external surfaces,
After the assay was approved, the finished product of refrigerator freezing air duct foreboard (1) and polyurethane foaming material (2) synthesis is obtained, it is thus obtained
Such finished product is refrigerator freezing ducting assembly.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (1)
1. a kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method, which is characterized in that including specifically walking
Suddenly are as follows:
1) Incoming Quality Control, main test refrigerator refrigerator freezing air duct foreboard Incoming Quality Control: are carried out to the foreboard in refrigerator freezing air duct
The preceding panel products in air duct, outer surface transition portion and whole smooth outer surface are freezed, no injection molding is bad, and appearance is without scuffing, trace
All sizes of mark, impression, the preceding panel products in refrigerator freezing air duct are mutually coincide with drawing, the preceding panel products in refrigerator freezing air duct
Accessory trial assembly no-float corresponding with refrigerator；
2) inspection to foaming mould before preparation production: to will be on foaming machine before production, the foaming mould used be carried out
It examines, examines the size looked into and survey the mold, it is ensured that meet mold drawing requirement, the size of mold and refrigerator freezing wind to be produced
Size is mutually matched at the synthesis of road foreboard polyurethane foaming material, die surface without damage, gouge, cracking, avalanche defect；
3) refrigerator freezing air duct foreboard is fixedly installed in qualified mould: examining qualified refrigerator freezing air duct foreboard to fix for 1) middle
Be mounted on 2) described in qualified mould above, starting produce used in cylinder, cylinder pusher cylinder briquetting will examine in 1)
Qualified refrigerator freezing air duct foreboard, be pressed together on 2) described in qualified mould above；Ensure to examine qualified refrigerator cold in 1)
Freeze air duct foreboard be pressed together on 2) described in qualified mould surface be bonded closely；
4) casting molding: on the matched operation pages of foaming machine, the foaming machine being mutually matched with product to be produced is set
Operating parameter, while manufacturing machine hand control cabinet matched with foaming machine is adjusted to automatic running pattern, described in starting 3)
The corresponding foaming machine program pushbutton of qualified mould, the foamed material in foaming machine is by the operating parameter good according to program setting, 3)
Described in the corresponding position of qualified mould be poured, mold production and processing；
5) it opens qualified mould and is made semi-finished product: 4) in the corresponding position of the qualified mould of foaming machine described in described in 3)
Polyurethane foaming material after foaming after solidifying on the foreboard of refrigerator freezing air duct, opens qualified mould, takes out refrigerator freezing wind
The product of road foreboard and polyurethane foaming materials synthesis cuts off the product with paper knife according to the drawing requirement for producing the product
The extra foamed material of surrounding；
6) ageing treatment: 5) middle open qualified mould after obtained semi-finished product are neatly placed on turnover rack of semi-finished product, not
Mark is pasted above same turnover rack of semi-finished product, in the specific time of mark above-noted registration unlatching qualified mould；It will be described
Semi-finished product above different turnover rack of semi-finished product, it is static to place 24 hours under normal temperature state, it is put into drying chamber heat treatment, institute
The temperature range for stating drying chamber is 96 DEG C~105 DEG C, and the time that the semi-finished product above turnover rack of semi-finished product are handled in drying chamber is 2 small
When, when such as encountering air humidity greater than 55%, the time that the semi-finished product above turnover rack of semi-finished product are handled in drying chamber is 3 small
When, after heating in drying chamber, check that polyurethane foaming material is cold in refrigerator above turnover rack of semi-finished product in semi-finished product one by one
Whether there is or not vacuole, bubbling, deformation defects above jelly air duct foreboard, when encountering defect, paste paper self-adhesive tape in fault location, are marked；
7) it repairing treatment: by the 6) product of the free bubble of middle label or bubbly defect, is integrally placed in above patch work platform, takes out
The mixing of suitable foamed material is filled in the colloid-injecting gun cleaned up, be poured into vacuole or be bubbled by colloid-injecting gun in, to vacuole or
After foamed material solidification in bubbling, extra foamed material is rooted out with perching knife, repairing treatment is completed；
8) it arranges blanking: being required according to product drawing, the polyurethane foaming material on the foreboard of refrigerator freezing air duct is cut
It arranges, while ensuring that cut place is smooth, smooth, whole processing of removing contamination is carried out to refrigerator freezing air duct front plane surface, it is ensured that
Outer surface transition portion and whole smooth outer surface；
9) product is examined to obtain the finished product of refrigerator freezing air duct foreboard and polyurethane foaming materials synthesis: after 8) completing
Product, according to product drawing require and product external surfaces requirement, carry out overall inspection, after the assay was approved, obtain refrigerator it is cold
Freeze the finished product of air duct foreboard and polyurethane foaming materials synthesis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711705.7A CN110455035A (en) | 2019-08-02 | 2019-08-02 | A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711705.7A CN110455035A (en) | 2019-08-02 | 2019-08-02 | A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method |
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| CN110455035A true CN110455035A (en) | 2019-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910711705.7A Pending CN110455035A (en) | 2019-08-02 | 2019-08-02 | A kind of refrigerator freezing air duct and polyurethane foaming materials synthesis product preparation method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1072439A (en) * | 1952-11-20 | 1954-09-13 | Zug Metallwarenfab | Insulating container, such as cabinet, chest or the like and method for its manufacture |
| US2744291A (en) * | 1951-04-19 | 1956-05-08 | Basf Ag | Production of porous shaped articles from thermoplastic materials |
| CN102235736A (en) * | 2010-04-29 | 2011-11-09 | 江苏宝信空调设备制造有限公司 | Heat preservation device for defrosting tray of fan coil |
-
2019
- 2019-08-02 CN CN201910711705.7A patent/CN110455035A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744291A (en) * | 1951-04-19 | 1956-05-08 | Basf Ag | Production of porous shaped articles from thermoplastic materials |
| FR1072439A (en) * | 1952-11-20 | 1954-09-13 | Zug Metallwarenfab | Insulating container, such as cabinet, chest or the like and method for its manufacture |
| CN102235736A (en) * | 2010-04-29 | 2011-11-09 | 江苏宝信空调设备制造有限公司 | Heat preservation device for defrosting tray of fan coil |
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Application publication date: 20191115 |
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