CN102645071A - Liner of refrigerating equipment and preparation method thereof - Google Patents
Liner of refrigerating equipment and preparation method thereof Download PDFInfo
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- CN102645071A CN102645071A CN2012101464131A CN201210146413A CN102645071A CN 102645071 A CN102645071 A CN 102645071A CN 2012101464131 A CN2012101464131 A CN 2012101464131A CN 201210146413 A CN201210146413 A CN 201210146413A CN 102645071 A CN102645071 A CN 102645071A
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Abstract
The invention discloses a liner of refrigerating equipment and a preparation method thereof. The liner of the refrigerating equipment is formed by a HIPS (High Impact Polystyrene) two-layer composite board. The HIPS two-layer composite board comprises a surface layer and a bottom layer, wherein the surface layer is formed by surface layer HIPS; the surface layer HIPS is selected from one or more of natural color HIPS, dyed HIPS and modified extrusion-grade HIPS; and the bottom layer comprises natural color extrusion-grade HIPS and return materials. According to the liner of the refrigerating equipment, which is disclosed by the embodiment of the invention, the HIPS two-layer composite board is adopted to form the liner, both the surface layer and the bottom layer of the HIPS two-layer composite board are made of the HIPS materials, various screened HIPS materials have excellent compatibilities and can be mutually blended without obviously influencing the appearance and the processing performance of the board, and thus, the strength of the board can be improved and the cracking risk can be reduced.
Description
Technical field
The present invention relates to the household electrical appliance preparing technical field, more specifically, the present invention relates to inner bag of a kind of refrigeration plant and preparation method thereof.
Background technology
Refrigerator/refrigerator in the prior art is with high light HIPS composite board, and general surface layer is high light HIPS, promptly high smooth polystyrene; Characteristics are to have good gloss, and shortcoming is that intensity is low, property is crisp, and is not corrosion-resistant; Particularly the case liner is easy to crack for the gained liner, has quality hidden danger; Bottom is the special-purpose HIPS of common extrusion grade refrigerator, i.e. ordinary polystyrene (safe like that imperial HIPS-1173), and price is lower.This sheet material is bad below existing:
1, because high light polystyrene quality is more crisp, be to reduce the cracking possibility, surface thickness is generally≤and 3%; Mould is also bigger to its influence, and gained case liner glossiness reality is very low, even can't see gloss; And very inhomogeneous, thereby make the cracking possibility further increase;
2, the plate squeezing surface thickness is wayward, and plate squeezing and plastic uptake scrappage are higher, and qualification rate is lower;
3, boxboard basic unit feed back is because of having high light HIPS to a certain degree, and ratio should not be too high, is generally in 30%, with control cracking risk.
Refrigerator/refrigerator in the prior art is used ABS sheet material, all is to adopt sheet material level ABS dyeing PP Pipe Compound, extrudes through sheet material extruder individual layer to form, and plate construction is single, has only one deck (individual layer).Usually not enough below existing in this board materials production:
1, is difficult for realizing functionalization;
2, there is the difference of aberration and performance in the ABS PP Pipe Compound of the different trades mark that provide of different suppliers, and compatibility property is relatively poor, can not use with, brings inconvenience to production management;
3, this kind ABS PP Pipe Compound has only fewer companies to produce, and leans on import entirely, and receipt period is long, and price is higher.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides a kind of useful commerce to select at least.For this reason, one object of the present invention is to propose the inner bag of a kind of intensity refrigeration plant high, corrosion-resistant and not easy to crack.
Another object of the present invention is to propose a kind of preparation method of inner bag of easy and simple to handle, refrigeration plant that implementation condition is gentle.
Inner bag according to a kind of refrigeration plant of the embodiment of the invention; Said inner bag is formed by two layers of composite board of HIPS; Two layers of composite board of said HIPS comprise: superficial layer; Said superficial layer is made up of superficial layer HIPS, and said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more; And bottom, said bottom includes true qualities extrusion grade HIPS and feed back.
The inner bag of refrigeration plant according to the above embodiment of the present invention, owing to adopt two layers of composite board moulding of HIPS, the superficial layer and the bottom of two layers of composite board of HIPS all adopt the HIPS material; Have good compatibility between the various HIPS materials through screening, can use with each other, and can obviously not influence sheet material outward appearance and processing characteristics; Can improve timber intensity; Reduce the cracking risk, and, can blending use between leftover pieces and the broken reclaimed materials; Need separately not deposit, production management is comparatively convenient.Simultaneously, can better unify the color of sheet material and liner with behind a kind of true qualities HIPS, dyeing HIPS or the modification extrusion grade HIPS, solve the aberration problem that exists between the dyeing HIPS of not homochromy mother and the basic unit PP Pipe Compound because superficial layer is selected; Bottom adopts true qualities extrusion grade HIPS and feed back to constitute, and can reduce cost through the ratio that increases feed back.
In order to solve problems such as high light surface layer intensity is low, property is crisp, not corrosion-resistant, can select superficial layer HIPS for use according to the superficial layer of the embodiment of the invention with lower predetermined glossiness, it is 10～75 ° that said predetermined glossiness is tested down at 60 °; Also can select the superficial layer HIPS of inferior light for use, promptly have low gloss or unglazed HIPS.HIPS as superficial layer does not have special limitation, as long as glossiness meets the demands, can require to select according to different purposes, different product.For example, in some embodiments of the invention, can select the true qualities pellet such as Chevron HIPS-D6007, Dao Daer HIPS-8265 of market sale for use.Said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more; Wherein said dyeing HIPS can use toner granulation dyeing; Also can use granulation of toughness reinforcing look female or on-line mixing dyeing; Modification then mainly is a toughening modifying, to improve the corrosion-resistant anti-cracking performance of surface layer.In addition, in order to satisfy the high-intensity needs of superficial layer, can strengthen notched Izod impact strength, hot strength and the elongation at break of superficial layer HIPS.Preferably, breach Chong Ji Qiang Du ≧ 10KJ/M of superficial layer HIPS
2, La stretches Qiang Du ≧ 25MPa, and Duan splits the Chang Shuai of Shen ≧ 60%.
The thickness of superficial layer is generally 5%～30% of two layers of composite board thickness of HIPS, can set according to the relative price of the raw material of being selected for use, strength character etc.Preferably, in order to make the superficial layer functionalization, in two layers of composite board of said HIPS, surface layer thickness is that two layers of composite board thickness of said HIPS are generally 8%～15%, preferred 10%.The superficial layer of this thickness has certain anti-microbial property, and lower to cost requirement.
The main feature of bottom is to adopt true qualities extrusion grade HIPS and feed back to be prepared from, and does not have particular restriction about the selection of true qualities extrusion grade HIPS, requires as long as satisfy processing and forming.For example; In some embodiments of the invention, can select for use Dao Daer HIPS-8265, Chevron HIPS-D6007, BASF-YPC HIPS-2710, platform HIPS-825S, this safe imperial HIPS-1173, bright and beautiful lake HIPS-425EP, Korea Spro of market sale to cling among the HIPS-2710 one or more.In other embodiment of the present invention, also can carry out look female dyeing to above-mentioned true qualities extrusion grade HIPS, used look mother can be that common look female, also can use the toughening functions look female.Said feed back does not have particular restriction, can be broken material, can be the granulation material yet, and said granulation material can also comprise simple granulation and modification toning granulation material, provides more material to select, and is convenient to buying and materials optimization.From the viewpoint that further reduces cost, the mass percent of said feed back can be 0～100%, and when two layers of composite board of said HIPS were used for the case courage of refrigeration plant, the mass percent of said feed back was 0～50%.
Forming method about two layers of composite board of HIPS of the present invention does not have particular restriction, for example can use preparation stratified material the institute often laminating, coetrusion etc. of employing.Wherein, coetrusion is to utilize two or two above extruders to extrude one-step shaping simultaneously.Because the co-extrusion modling method can be accomplished the extrusion molding of MULTILAYER COMPOSITE goods and have characteristics such as production cost is low, technology is simple, energy consumption is low, production efficiency height at an in-process.The method that forms the inner bag of refrigeration plant through two layers of composite board of HIPS does not have particular restriction yet; In an embodiment of the present invention; Select for use the co-extrusion modling method that said superficial layer and said bottom are formed two layers of composite board through co-extrusion of two-layer compound plate squeezing equipment, and form the inner bag of refrigeration plant with the method for plastics sucking moulding.Its concrete operations can may further comprise the steps:
A) true qualities extrusion grade HIPS and feed back are mixed obtain mixed material, wherein, the mass percent of said feed back can be 0～100%, and when two layers of composite board of said HIPS were used for the case courage of refrigeration plant, the mass percent of said feed back was 0～50%;
B) with going out to form semifinished sheet through the extruder die coextrusion head after superficial layer HIPS and the fusion of said mixed material adding extruder; Making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 5%～30% of two layers of composite board thickness of HIPS; Preferred 8%～15%; Said cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃;
C) said semifinished sheet is cut; Obtain having two layers of composite board of HIPS of reservation shape; Said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more; Wherein, said semifinished sheet is delivered to draw-gear drawing moulding through transport, and after the traction moulding, cuts through corona.Said transport is the desk-top conveyer of chill roll, and the delivery temperature of the desk-top conveyer of said chill roll is 60～100 ℃, and said corona impact value is 4.0 * 10
-6J/cm
2
D) two layers of composite board of said HIPS are passed through plastics sucking moulding as required, obtain the inner bag of refrigeration plant, the inner bag of refrigeration plant comprises but is not limited to a courage and case courage.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is two layers of composite board structural representation of HIPS of inner bag of the refrigeration plant of one embodiment of the invention;
Fig. 2 is the door bladder structure sketch map of the refrigeration plant of one embodiment of the invention;
Fig. 3 is the case bladder structure sketch map of the refrigeration plant of one embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, be intended to be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " clockwise ", " counterclockwise " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more a plurality of these characteristics can be shown or impliedly comprised to the characteristic that is limited with " first ", " second " clearly.In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more, only if clear and definite qualification is arranged in addition.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be to be fixedly connected, and also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
In the present invention; Only if clear and definite regulation and qualification are arranged in addition; First characteristic second characteristic it " on " or D score can comprise that first and second characteristics directly contact, can comprise that also first and second characteristics are not directly contacts but through the contact of the additional features between them.And, first characteristic second characteristic " on ", " top " and " above " comprise first characteristic directly over second characteristic and oblique upper, or only represent that the first characteristic level height is higher than second characteristic.First characteristic second characteristic " under ", " below " and " below " comprise first characteristic directly over second characteristic and oblique upper, or only represent that the first characteristic level height is less than second characteristic.
Inner bag according to the refrigeration plant of the embodiment of the invention; Comprise a courage and case courage; Said door courage and case courage can pass through plastics sucking moulding by two layers of composite board of HIPS; Two layers of composite board of HIPS comprise superficial layer that is made up of superficial layer HIPS and the bottom that is made up of true qualities extrusion grade HIPS and feed back, and said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more.The inner bag of being produced thus has good anti-cracking performance, and intensity is high, and cost is low, and attractive in appearance, be convenient to cleaning, also have anti-blowing agent corrosivity simultaneously.
Embodiment 1: the door courage (gross thickness 1.2mm) of refrigeration plant
The superficial layer raw material is selected Chevron true qualities HIPS-D6007 for use.
The bottom raw material is selected Chevron HIPS-D6007 for use, adds the dyeing of 5% look female, selects for use 70% broken material or reuse granulation material as feed back.
With Chevron HIPS-D6007, look mother and feed back mix and obtain mixed material;
With going out to form semifinished sheet through the extruder die coextrusion head after Chevron true qualities HIPS-D6007 and the mixed material fusion; Making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 0.12mm; The thickness of bottom is 1.08mm; Wherein, the cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃;
Semifinished sheet is drawn moulding through the desk-top conveyor of chill roll to carry-over pinch rolls, and the temperature of the desk-top conveyer of chill roll is controlled between 60～100 ℃, and the corona impact value is 4.0 * 10
-6J/cm
2, cutting obtains two layers of composite board of HIPS (as shown in Figure 1, A presentation surface layer wherein, B representes bottom) after corona;
Two layers of composite board of said HIPS as required through plastics sucking moulding, are obtained the door courage (as shown in Figure 2) of refrigeration plant.
The door courage that makes thus can be used for adopting the refrigerator of pentamethylene foaming.
Embodiment 2: the door courage (gross thickness 1.2mm) of refrigeration plant
The superficial layer raw material is selected Dao Daer HIPS-8265 for use.
The bottom raw material is selected Chevron HIPS-D6007 for use, adds the dyeing of 5% look female, selects for use 70% broken material or reuse granulation material as feed back.
Chevron HIPS-D6007 and feed back mixed obtain mixed material;
With going out to form semifinished sheet through the extruder die coextrusion head after Si Daodaer HIPS-8265 and the mixed material fusion; Making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 0.03mm; The thickness of bottom is 1.17mm; Wherein, the cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃;
Semifinished sheet is drawn moulding through the desk-top conveyor of chill roll to carry-over pinch rolls, and the temperature of the desk-top conveyer of chill roll is controlled between 60～100 ℃, and the corona impact value is 4.0 * 10
-6J/cm
2, cutting obtains two layers of composite board of HIPS after corona;
Two layers of composite board of said HIPS as required through plastics sucking moulding, are obtained the door courage of refrigeration plant.
The door courage that makes thus can be used for adopting the refrigerator of pentamethylene foaming.
Embodiment 3: the case courage (gross thickness 3.3mm) of refrigeration plant
The superficial layer raw material is selected Chevron true qualities HIPS-D6007 for use.
The bottom raw material is selected Dao Daer HIPS-8265 for use, adds the dyeing of 5% look female, selects for use 50% broken material or reuse granulation material as feed back.
Dao Daer HIPS-8265 and feed back mixed obtain mixed material;
With going out to form semifinished sheet through the extruder die coextrusion head after Chevron true qualities HIPS-D6007 and the mixed material fusion; Making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 0.33mm; The thickness of bottom is 2.97mm; Wherein, the cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃;
Semifinished sheet is drawn moulding through the desk-top conveyor of chill roll to carry-over pinch rolls, and the temperature of the desk-top conveyer of chill roll is controlled between 60～100 ℃, and the corona impact value is 4.0 * 10
-6J/cm
2, cutting obtains two layers of composite board of HIPS after corona;
Two layers of composite board of said HIPS as required through plastics sucking moulding, are obtained the case courage (as shown in Figure 3) of refrigeration plant.
The case courage that makes thus can be used for adopting the refrigerator of pentamethylene foaming.
Embodiment 4: the case courage (gross thickness 3.3mm) of refrigeration plant
The superficial layer raw material is selected true qualities Dao Daer HIPS-8265 for use.
The bottom raw material is selected Dao Daer HIPS-8265 for use, adds the dyeing of 5% look female, selects for use 50% broken material or reuse granulation material as feed back.
Dao Daer HIPS-8265 and feed back mixed obtain mixed material;
With going out to form semifinished sheet through the extruder die coextrusion head after true qualities Dao Daer HIPS-8265 and the mixed material fusion; Making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 0.1mm; The thickness of bottom is 3.2mm; Wherein, the cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃;
Semifinished sheet is drawn moulding through the desk-top conveyor of chill roll to carry-over pinch rolls, and the temperature of the desk-top conveyer of chill roll is controlled between 60～100 ℃, and the corona impact value is 4.0 * 10
-6J/cm
2, cutting obtains two layers of composite board of HIPS after corona;
Two layers of composite board of said HIPS as required through plastics sucking moulding, are obtained the case courage of refrigeration plant.
The case courage that makes thus can be used for adopting the refrigerator of pentamethylene foaming.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above; It is understandable that; The foregoing description is exemplary; Can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change the foregoing description under the situation that does not break away from principle of the present invention and aim within the scope of the invention, modification, replacement and modification.
Claims (18)
1. the inner bag of a refrigeration plant is characterized in that, said inner bag is by two layers of composite board plastics sucking moulding of HIPS, and two layers of composite board of said HIPS comprise:
Superficial layer, said superficial layer is made up of superficial layer HIPS, and said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more; With
Bottom, said bottom includes true qualities extrusion grade HIPS and feed back.
2. the inner bag of refrigeration plant according to claim 1 is characterized in that, said superficial layer HIPS has predetermined glossiness or inferior light.
3. the inner bag of refrigeration plant according to claim 2 is characterized in that, said predetermined glossiness is 10～75 °.
4. the inner bag of refrigeration plant according to claim 1 is characterized in that, said superficial layer HIPS breach Chong Ji Qiang Du ≧ 10KJ/M
2, La stretches Qiang Du ≧ 25MPa, and Duan splits the Chang Shuai of Shen ≧ 60%.
5. the inner bag of refrigeration plant according to claim 1; It is characterized in that said true qualities extrusion grade HIPS is selected from Dao Daer HIPS-8265, Chevron HIPS-D6007, BASF-YPC HIPS-2710, platform HIPS-825S, this safe imperial HIPS-1173, bright and beautiful lake HIPS-425EP, Korea Spro to cling among the HIPS-2710 one or more.
6. the inner bag of refrigeration plant according to claim 1 is characterized in that, said true qualities extrusion grade HIPS is through look female dyeing.
7. the inner bag of refrigeration plant according to claim 1 is characterized in that, said feed back is to be selected from broken material and the granulation material one or both.
8. the inner bag of refrigeration plant according to claim 1 is characterized in that, the mass percent of said feed back is 0～100%.
9. the inner bag of refrigeration plant according to claim 8 is characterized in that, the mass percent of said feed back is 0～50%.
10. the inner bag of refrigeration plant according to claim 1 is characterized in that, in two layers of composite board of said HIPS, said surface layer thickness is 5%～30% of two layers of composite board thickness of said HIPS.
11. the inner bag according to each described refrigeration plant of claim 1-10 is characterized in that, two layers of composite board of said HIPS are prepared by the co-extrusion modling method.
12. the preparation method of the inner bag of a refrigeration plant is characterized in that, may further comprise the steps:
A) true qualities extrusion grade HIPS and feed back are mixed obtain mixed material;
B) with going out to form semifinished sheet through the extruder die coextrusion head after superficial layer HIPS and the fusion of said mixed material adding extruder;
C) said semifinished sheet is cut, obtain having two layers of composite board of HIPS of reservation shape, wherein,
Said superficial layer HIPS is selected among true qualities HIPS, dyeing HIPS, the modification extrusion grade HIPS one or more;
D) two layers of composite board of said HIPS are passed through plastics sucking moulding, obtain the inner bag of refrigeration plant.
13. the preparation method of the inner bag of refrigeration plant according to claim 12 is characterized in that, in step b), making the surface layer thickness of two layers of composite board of HIPS through the rotating speed of regulating measuring pump is 5%～30% of two layers of composite board thickness of HIPS.
14. the preparation method of the inner bag of refrigeration plant according to claim 12 is characterized in that, in the said mixed material, the mass percent of said feed back is 0～100%.
15. the preparation method of the inner bag of refrigeration plant according to claim 14 is characterized in that, the mass percent of said feed back is 0～50%.
16. the preparation method of the inner bag of refrigeration plant according to claim 12 is characterized in that, said cross-head temperature is 190～240 ℃, and melt temperature is 180～240 ℃.
17. the preparation method of the inner bag of refrigeration plant according to claim 12; It is characterized in that; Step c) comprises: said semifinished sheet is delivered to draw-gear drawing moulding through transport, and after the traction moulding, cuts through corona.
18. the preparation method of the inner bag of refrigeration plant according to claim 17 is characterized in that, said transport is the desk-top conveyer of chill roll, and the delivery temperature of the desk-top conveyer of said chill roll is 60～100 ℃, and said corona impact value is 4.0 * 10
-6J/cm
2
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|---|---|---|---|
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| CN103113703A (en) * | 2013-01-30 | 2013-05-22 | 合肥美的荣事达电冰箱有限公司 | Master batch composition, compound board and preparation method of compound board, and refrigeration plant |
| CN103407263A (en) * | 2013-08-30 | 2013-11-27 | 合肥美的电冰箱有限公司 | Alloy composite board and use thereof |
| CN107914447A (en) * | 2017-11-27 | 2018-04-17 | 合肥华凌股份有限公司 | Composite board and preparation method thereof, liner of refrigeration equipment and refrigeration plant |
| US20190390893A1 (en) * | 2018-06-25 | 2019-12-26 | Whirlpool Corporation | Hybrid pigmented hot stitched color liner system |
| US11175090B2 (en) | 2016-12-05 | 2021-11-16 | Whirlpool Corporation | Pigmented monolayer liner for appliances and methods of making the same |
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| US20190390893A1 (en) * | 2018-06-25 | 2019-12-26 | Whirlpool Corporation | Hybrid pigmented hot stitched color liner system |
| US10907888B2 (en) * | 2018-06-25 | 2021-02-02 | Whirlpool Corporation | Hybrid pigmented hot stitched color liner system |
| US11306965B2 (en) | 2018-06-25 | 2022-04-19 | Whirlpool Corporation | Hybrid pigmented hot stitched color liner system |
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Address after: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant after: Hefei Midea Refrigerator Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant before: Hefei Media Rongshida Refrigerator Co., Ltd. |
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Application publication date: 20120822 |