CN110345701A - A kind of 3D complementary surface refrigerator door and its manufacture craft - Google Patents

A kind of 3D complementary surface refrigerator door and its manufacture craft Download PDF

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Publication number
CN110345701A
CN110345701A CN201910730204.3A CN201910730204A CN110345701A CN 110345701 A CN110345701 A CN 110345701A CN 201910730204 A CN201910730204 A CN 201910730204A CN 110345701 A CN110345701 A CN 110345701A
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CN
China
Prior art keywords
door
door shell
composite
composite material
layers
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Pending
Application number
CN201910730204.3A
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Chinese (zh)
Inventor
陈珊
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Changhong Meiling Co Ltd
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Changhong Meiling Co Ltd
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Application filed by Changhong Meiling Co Ltd filed Critical Changhong Meiling Co Ltd
Priority to CN201910730204.3A priority Critical patent/CN110345701A/en
Publication of CN110345701A publication Critical patent/CN110345701A/en
Pending legal-status Critical Current

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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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2509/00—Household appliances
    • B32B2509/10—Refrigerators or refrigerating equipment
    • 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
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered

Abstract

The invention discloses a kind of 3D complementary surface refrigerator door and its manufacture crafts, are related to refrigerator door technical field.To outside successively including door lining, polyurethane foaming layer, door shell stand frame and composite material door shell in of the invention；Filled polyurethane foaming layer between door lining and door shell stand frame；Door lining upper and lower ends distinguish fixed door panel；Door panel two sides are separately connected door lining and door shell stand frame；Composite material door shell is formed by composite substrate hot bending；Composite substrate successively includes PET protection film, hardening oleophobic hydrophobic coating, PMMA layers, PC layers and PC printing layer from outside to inside.PMMA layers of the present invention stand-by PMMA/PC composite plate is made by composite co-extruding equipment with PC layers；The pencil hardness that 4H or more can be reached after PMMA layers of stiffened, ensure that the scraping and wiping resistance performance of product, and PC layers can ensure that it, with enough toughness, ensure that whole impact strength；Realize composite door shell uniform wall thickness, easily punching, high rigidity, high abrasion, easily molded.

Description

A kind of 3D complementary surface refrigerator door and its manufacture craft
Technical field
The invention belongs to refrigerator door technical fields, more particularly to a kind of 3D complementary surface refrigerator door and its production work Skill.
Background technique
Refrigerator door shape is generally planar at present or single-curved surface, and is splicing structure, and 3D complementary surface integration door shell Usually there are evenness of wall thickness formation problems, the especially formation problems with pattern door shell.Common 3D complementary surface integrated door Shell uses material and molding mode, generally following manner:
Method 1: band pattern steel plate is made using colorful covering membrane technique, is 3D complementary surface shape through deep drawn machine-shaping Refrigerator door；
Method 2: being that 3D is complete through deep drawn machine-shaping after colored pre-coated steel plate surface is using caloric transfer printing technology transfer pattern The refrigerator door of curve form；
After method 3:ABS plastics add color masterbatch, integral molded plastic is shaped to the refrigerator door of 3D complementary surface shape；
If the molding of colorful covering membrane steel plate deep drawn, steel plate stretching is oversized, in particular up to 40mm using method 1 More than, have the following deficiencies: that 1. substrate of steel plate uniform wall thickness is destroyed, the thin place of wall for stretching excess is easy cracking；2. color steel plate PVC the or PET coloured silk film that surface attaches, in complementary surface stretcher strain, there is color film cracking risk in deep-draw, wrap angle position.3. table Face decorative pattern is plane effect, can not achieve three-dimensional and dynamic effect.Disadvantages described above causes product to be unable to reach appearance requirement, Fraction defective is higher；
If using method 2, steel plate of the colored pre-coated steel plate after caloric transfer printing technology transfers pattern, steel plate stretching size mistake Greatly, in particular up to 40mm or more has the following deficiencies: that 1. substrate of steel plate uniform wall thickness type is destroyed, and the thin place of wall is easy cracking, 2. bending, deep-draw and wrap angle position ink may plucking or crackings.3. incrustation pattern is plane effect, can not achieve Three-dimensional and dynamic effect.Disadvantages described above causes product to be unable to reach appearance requirement, and fraction defective is high；Higher cost simultaneously.
If integral molded plastic forms after ABS plastic adds color masterbatch, because refrigerator door size is larger, disposably using method 3 Die cost investment is high, and Shooting Technique requires height, need to purchase special pigmenting, and protection requires high in production；It is whole simultaneously Body ABS injection molding can make the door shell of multicolour using pigmenting, but can not make door body exterior design.
Therefore in the case where product pursues trend that is personalized, customizing, current refrigerator steel plate door shell or plastic injection door shell exist Be manufactured and decorative appearance pattern in terms of existing defects.
Summary of the invention
The purpose of the present invention is to provide a kind of 3D complementary surface refrigerator door and its manufacture crafts, make composite material door shell The composite substrate of use includes PET protection film, hardening oleophobic hydrophobic coating, PMMA layers, PC layers and PC printing layer；And PMMA layers stand-by PMMA/PC composite plate is made by composite co-extruding equipment with PC layers；4H or more can be reached after PMMA layers of stiffened Pencil hardness, ensure that the scraping and wiping resistance performance of product, and PC layers can ensure that it, with enough toughness, ensure that whole rush Hit intensity.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is a kind of 3D complementary surface refrigerator door, from the inside to the outside successively includes door lining, polyurethane foaming layer, door shell Stand frame and composite material door shell；
Filled polyurethane foaming layer between the door lining and door shell stand frame；The door lining upper and lower ends are fixed respectively Door panel；Door trim two sides are separately connected door lining and door shell stand frame；
The composite material door shell matching is set on the outside of door shell stand frame, and the inner wall of the composite material door shell passes through Two-sided polyurethane foam class adhesive tape and door shell stand frame outer wall close adhesion, the door shell stand frame are played to composite material door shell The effect of support；
The composite material door shell is formed by composite substrate hot bending；The composite substrate successively wraps from outside to inside Include PET protection film, hardening oleophobic hydrophobic coating, PMMA layers, PC layers and PC printing layer；PMMA has preferable hardness and wear-resisting Property, for outside, PC has good toughness, as internal layer；The pencil hardness of 4H or more can be reached after PMMA layers of stiffened, guaranteed The scraping and wiping resistance performance of product, and PC layers can ensure that it, with enough toughness, ensure that whole impact strength；It realizes multiple It is condensation material door shell uniform wall thickness, easily punching, high rigidity, high abrasion, easily molded, when ensure that composite substrate hot bending, PC layers On pattern effect it is good.
Preferably, PMMA/PC composite plate is made by composite co-extruding equipment with PC layers for described PMMA layers；The PC layer surface The PC layer surface printed patterns after preparatory printed patterns or co-extrusion form PC printing layer, PC printing layer by UV photocuring into Row protection；PC printing layer is formed by the PC layer surface printed patterns after the preparatory printed patterns of PC layer surface or co-extrusion, is guaranteed multiple Pattern effect at condensation material door shell arc-shaped curved surface position is good, is able to achieve three-dimensional and dynamic effect.
Preferably, the two-sided polyurethane foam class adhesive tape with a thickness of 1-2mm；The composite material door shell and door shell branch Bonding area between frame frame accounts for the 20%-50% of composite material door shell.
A kind of manufacture craft of 3D complementary surface refrigerator door, comprises the following processes: production composite material door shell and production 3D complementary surface refrigerator door；
Wherein, production composite material door shell specifically includes following process:
S00: PC printing layer is formed in PC layer surface preprinted pattern by screen printer；
S01: composite substrate is obtained to PMMA layers and PC layers of co-extrusion by composite co-extruding equipment；
S02: the preheating of composite substrate: die heater preheats composite substrate controlled between 70-90 DEG C 0.5-1.5 hours；
S03: the hot bending shape of composite substrate: die heater controlled between 180-200 DEG C to composite material base Plate hot bending shape, hot bending time are 3-15 minutes；
S04: composite substrate hot bending sizing: die heater controlled between 70-90 DEG C to composite material base The sizing of plate hot bending, hot bending time are 100-120s；
Wherein, production 3D complementary surface refrigerator door specifically includes following process:
T00: the inner wall of composite material door shell is closely glued by two-sided polyurethane foam class adhesive tape and door shell stand frame outer wall It closes；
T01: after door shell stand frame, door lining, door shell stand frame and upper and lower two panels are stablized installation, through polyurethane Foam filled formation polyurethane foaming layer.
Preferably, it carries out also carrying out following process before batch prints in S00:
PC layers are placed on the positioning surface of printing machine；It determines the position of printed patterns and ink is inverted in halftone, hand Dynamic examination print is to confirm printed patterns, print color and printing technology parameter；
The printing technology parameter includes silk-screen pressure, print speed printing speed, oil return speed and locating speed.
Preferably, T00 specifically further includes as follows:
Time marginal position pastes two-sided polyurethane foam class adhesive tape in the composite material door shell；
By composite material door shell matching be set in door shell stand frame outer wall and greater than 3000Pa pressure under, pressure maintaining 30- 50s；
Wherein, the bonding area between the composite material door shell and door shell stand frame accounts for the 20%- of composite material door shell 50%.
One aspect of the present invention has the advantages that
1, the present invention production composite material door shell use composite substrate include PET protection film, hardening oleophobic it is hydrophobic Coating, PMMA layers, PC layers and PC printing layer；And PMMA layers stand-by PMMA/PC is made by composite co-extruding equipment with PC layers Composite plate；The pencil hardness that 4H or more can be reached after PMMA layers of stiffened, ensure that the scraping and wiping resistance performance of product, and PC layers can ensure that It ensure that whole impact strength with enough toughness；It is hard to realize composite door shell uniform wall thickness, easily punching, height It is degree, high abrasion, easily molded.
2, the pattern on composite material door shell of the present invention passes through the PC layer table after the preparatory printed patterns of PC layer surface or co-extrusion Face printed patterns form PC printing layer, guarantee that the pattern effect at composite material door shell arc-shaped curved surface position is good, are able to achieve vertical Body and dynamic effect.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 is a kind of rearview of 3D complementary surface refrigerator door of the present invention；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is the enlarged drawing of A in Fig. 2；
Fig. 4 is the structural schematic diagram of composite substrate in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " aperture ", "upper", " in ", " length ", the instruction such as "inner" Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the component of indication or suggestion meaning or Element must have a particular orientation, and be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Please refer to shown in Fig. 1-4, the present invention be a kind of 3D complementary surface refrigerator door, from the inside to the outside successively include door lining 1, Polyurethane foaming layer 2, door shell stand frame 3 and composite material door shell 4；
Filled polyurethane foaming layer 2 between door lining 1 and door shell stand frame 3；1 upper and lower ends of door lining distinguish fixed door decorations Item 11；11 two sides of door panel are separately connected door lining 1 and door shell stand frame 3；Door shell stand frame 3 is played to composite material door shell 4 The effect of support；
The matching of composite material door shell 4 is set in the outside of door shell stand frame 3, and the inner wall of composite material door shell 4 pass through it is two-sided Polyurethane foam class adhesive tape 31 and 3 outer wall close adhesion of door shell stand frame；
Composite material door shell 4 is formed by composite substrate hot bending；Composite substrate successively includes that PET is protected from outside to inside Cuticula 41, hardening oleophobic hydrophobic coating 42, PMMA layer 43, PC layer 44 and PC printing layer 45；PMMA have preferable hardness and Wearability, for outside, PC has good toughness, as internal layer；The pencil that 4H or more can be reached after 43 stiffened of PMMA layer is hard Degree, ensure that the scraping and wiping resistance performance of product, and PC layer 44 can ensure that it with enough toughness, ensure that whole impact is strong Degree；Composite door shell uniform wall thickness, easily punching, high rigidity, high abrasion, easily molded are realized, ensure that composite substrate When hot bending, the pattern effect on PC layer 44 is good.
Wherein, PMMA layer 43 and PC layer 44 pass through the obtained PMMA/PC composite plate of composite co-extruding equipment；44 surface of PC layer are preparatory 44 surface printing pattern of PC layer after printed patterns or co-extrusion forms PC printing layer 45；PC printing layer 45 is carried out by UV photocuring Protection；PC printing layer 45 is formed by the 44 surface printing pattern of PC layer after the preparatory printed patterns in 44 surface of PC layer or co-extrusion, is protected The pattern effect demonstrate,proved at 4 arc-shaped curved surface position of composite material door shell is good, is able to achieve three-dimensional and dynamic effect.
Wherein, two-sided polyurethane foam class adhesive tape 31 with a thickness of 1-2mm；Between composite material door shell and door shell stand frame Bonding area account for the 20%-50% of composite material door shell, guarantee to have good stability.
A kind of manufacture craft of 3D complementary surface refrigerator door, comprises the following processes: production composite material door shell 4 and production 3D complementary surface refrigerator door；
Wherein, production composite material door shell 4 specifically includes following process:
S00: PC printing layer 45 is formed in 44 surface preprinted pattern of PC layer by screen printer；
S01: composite substrate is obtained to PMMA layer 43 and 44 co-extrusion of PC layer by composite co-extruding equipment；
S02: the preheating of composite substrate: die heater preheats composite substrate controlled between 70-90 DEG C 0.5-1.5 hours；
S03: the hot bending shape of composite substrate: die heater controlled between 180-200 DEG C to composite material base Plate hot bending shape, hot bending time are 3-15 minutes；
S04: composite substrate hot bending sizing: die heater controlled between 70-90 DEG C to composite material base The sizing of plate hot bending, hot bending time are 100-120s；
In specific manufacturing process: the composite substrate in composite material door shell 4, by PMMA/PC composite material in mould In warm machine by hot bending process repeatedly gradually hot bending shape by board making at the 3D shape of required door body moulding.In order according to It is secondary for " warm-up phase ", " hot bending shape stage ", " sizing stage ", wherein depth requirements are biggish to increase hot bending number.
It is specific: to be for the first time " warm-up phase ", between 70-90 DEG C, the time between 0.5-1.5 hours, is temperature The evenness of wall thickness of subsequent hot bending provides advantage；
Second is " hot bending shape stage ", and the hot bending mould in this stage is made of punch-pin and cavity plate, and forming temperature is in 180- Between 200 DEG C, the hot bending time, PMMA/PC composite material deformed under the effect of external force between 3-15 minutes, finally with Mold curvature reaches unanimously, and the specific hot bending temperature in the stage and hot bending time combine the deformation point, soft of PMMA/PC composite material It is specific determining to change point；
The forming temperature in " sizing stage " is between 70-90 DEG C for the third time, and setting time is in 110s or so；According to composite plate Specific deformation point, the softening dot characteristics of material rationally determine " hot bending shape " time and " sizing " time, can better ensure that door Evenness of wall thickness after casing forming；
Wherein, production 3D complementary surface refrigerator door specifically includes following process:
T00: the inner wall of composite material door shell 4 is tight by two-sided polyurethane foam class adhesive tape 31 and 3 outer wall of door shell stand frame Close bonding；
T01: after door shell stand frame 3, door lining 1, door shell stand frame 3 and upper and lower two panels 11 are stablized installation, warp Polyurethane foam fills to form polyurethane foaming layer 2.
Wherein, it carries out also carrying out following process before batch prints in S00:
PC layer 44 is placed on the positioning surface of printing machine；It determines the position of printed patterns and ink is inverted in halftone, Examination print is manually to confirm printed patterns, print color and printing technology parameter；
Printing technology parameter includes silk-screen pressure, print speed printing speed, oil return speed and locating speed.
Wherein, T00 specifically further includes as follows:
Time marginal position pastes two-sided polyurethane foam class adhesive tape 31 in composite material door shell 4；
By composite material door shell 4 match be set in 3 outer wall of door shell stand frame and greater than 3000Pa pressure under, pressure maintaining 30-50s；
Wherein, the bonding area between composite material door shell 4 and door shell stand frame 3 accounts for the 20%- of composite material door shell 4 50%.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example. Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification, It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only It is limited by claims and its full scope and equivalent.

Claims (6)

1. a kind of 3D complementary surface refrigerator door, which is characterized in that from the inside to the outside successively include door lining (1), polyurethane foaming layer (2), door shell stand frame (3) and composite material door shell (4)；
Filled polyurethane foaming layer (2) between the door lining (1) and door shell stand frame (3)；Door lining (1) upper and lower ends Respectively fixed door panel (11)；Door trim item (11) two sides are separately connected door lining (1) and door shell stand frame (3)；
Composite material door shell (4) matching is set on the outside of door shell stand frame (3), and the composite material door shell (4) is interior Wall passes through two-sided polyurethane foam class adhesive tape (31) and door shell stand frame (3) outer wall close adhesion；
The composite material door shell (4) is formed by composite substrate hot bending；The composite substrate successively wraps from outside to inside Include PET protection film (41), hardening oleophobic hydrophobic coating (42), PMMA layers (43), PC layers (44) and PC printing layer (45).
2. a kind of 3D complementary surface refrigerator door according to claim 1, which is characterized in that PMMA layers described (43) and PC layers (44) PMMA/PC composite plate is made by composite co-extruding equipment；After the preparatory printed patterns in PC layers described (44) surface or co-extrusion PC layers described (44) the surface printing pattern forms PC printing layer (45).
3. a kind of 3D complementary surface refrigerator door according to claim 1, which is characterized in that the two-sided polyurethane foam class Adhesive tape (31) with a thickness of 1-2mm；Bonding area between the composite material door shell (4) and door shell stand frame (3) accounts for compound The 20%-50% of material door shell (4).
4. a kind of manufacture craft of 3D complementary surface refrigerator door as described in claim 1-3 is any one, which is characterized in that including Following process: production composite material door shell (4) and production 3D complementary surface refrigerator door；
Wherein, production composite material door shell (4) specifically includes following process:
S00: PC printing layer (45) are formed in PC layers of (44) surface preprinted pattern by screen printer；
S01: composite substrate is obtained to PMMA layers (43) and PC layers of (44) co-extrusion by composite co-extruding equipment；
S02: the preheating of composite substrate: die heater preheats 0.5- to composite substrate controlled between 70-90 DEG C 1.5 hour；
S03: the hot bending shape of composite substrate: die heater controlled between 180-200 DEG C to composite substrate heat Roll forming, hot bending time are 3-15 minutes；
S04: the hot bending sizing of composite substrate: die heater is controlled at warm to composite substrate between 70-90 DEG C Curved sizing, hot bending time are 100-120s；
Wherein, production 3D complementary surface refrigerator door specifically includes following process:
T00: the inner wall of composite material door shell (4) passes through two-sided polyurethane foam class adhesive tape (31) and door shell stand frame (3) outer wall Close adhesion；
T01: door shell stand frame (3), door lining (1), door shell stand frame (3) and upper and lower two panels (11) are stablized and installed Afterwards, it fills to form polyurethane foaming layer (2) through polyurethane foam.
5. a kind of manufacture craft of 3D complementary surface refrigerator door according to claim 4, which is characterized in that carried out in S00 Batch also carries out following process before printing:
PC layers (44) are placed on the positioning surface of printing machine；It determines the position of printed patterns and ink is inverted in halftone, hand Dynamic examination print is to confirm printed patterns, print color and printing technology parameter；
The printing technology parameter includes silk-screen pressure, print speed printing speed, oil return speed and locating speed.
6. a kind of manufacture craft of 3D complementary surface refrigerator door according to claim 4, which is characterized in that T00 is specifically gone back Include the following:
Time marginal position pastes two-sided polyurethane foam class adhesive tape (31) in the composite material door shell (4)；
By composite material door shell (4) matching be set in door shell stand frame (3) outer wall and greater than 3000Pa pressure under, pressure maintaining 30-50s；
Wherein, the bonding area between the composite material door shell (4) and door shell stand frame (3) accounts for composite material door shell (4) 20%-50%.
CN201910730204.3A 2019-08-08 2019-08-08 A kind of 3D complementary surface refrigerator door and its manufacture craft Pending CN110345701A (en)

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CN111397288A (en) * 2020-03-26 2020-07-10 长虹美菱股份有限公司 Refrigerator door body
CN113063252A (en) * 2021-04-14 2021-07-02 长虹美菱股份有限公司 Anti-bacterial refrigerator door body with etched texture and refrigerator

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CN102774107A (en) * 2012-08-13 2012-11-14 广东万事杰塑料科技有限公司 Multilayer composite membrane, multilayer composite board and preparation method thereof
KR20170003181A (en) * 2015-06-30 2017-01-09 코오롱인더스트리 주식회사 Curved Type Transparent Plastic Sheet And Method For Manufacturing The Same
CN107379506A (en) * 2017-07-25 2017-11-24 广东美的制冷设备有限公司 Preparation method, 3D acrylics panel and the indoor apparatus of air conditioner of 3D acrylic panels
CN108955060A (en) * 2018-08-31 2018-12-07 长虹美菱股份有限公司 A kind of refrigerator door and its manufacture craft
CN210463729U (en) * 2019-08-08 2020-05-05 长虹美菱股份有限公司 3D full-curved surface refrigerator door body

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CN102774107A (en) * 2012-08-13 2012-11-14 广东万事杰塑料科技有限公司 Multilayer composite membrane, multilayer composite board and preparation method thereof
KR20170003181A (en) * 2015-06-30 2017-01-09 코오롱인더스트리 주식회사 Curved Type Transparent Plastic Sheet And Method For Manufacturing The Same
CN107379506A (en) * 2017-07-25 2017-11-24 广东美的制冷设备有限公司 Preparation method, 3D acrylics panel and the indoor apparatus of air conditioner of 3D acrylic panels
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111397288A (en) * 2020-03-26 2020-07-10 长虹美菱股份有限公司 Refrigerator door body
CN113063252A (en) * 2021-04-14 2021-07-02 长虹美菱股份有限公司 Anti-bacterial refrigerator door body with etched texture and refrigerator

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