CN107383596A - Hollow sheeting master batch, hollow sheeting and refrigerator - Google Patents
Hollow sheeting master batch, hollow sheeting and refrigerator Download PDFInfo
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- CN107383596A CN107383596A CN201710586290.6A CN201710586290A CN107383596A CN 107383596 A CN107383596 A CN 107383596A CN 201710586290 A CN201710586290 A CN 201710586290A CN 107383596 A CN107383596 A CN 107383596A
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- hollow sheeting
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- support bar
- hollow
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- 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
- F25D23/06—Walls
- F25D23/065—Details
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention discloses a kind of hollow sheeting master batch, hollow sheeting and refrigerator, and the raw material of the hollow sheeting master batch includes 0.9~1.2 part of 92~98 parts of polypropylene, 10~15 parts of ethylene/propene copolymer, 60~65 parts of ethylene-propylene copolymer, 27~32 parts of EPDM copolymer rubber, 4~8 parts of low molecular weight polyethylene, 0.9~1.3 part of antioxidant, 17.1~21.8 parts of talcum powder and chlorinated paraffin by weight.Hollow sheeting master batch is made using the multiple material of said ratio, hollow sheeting is manufactured by extrusion molding again, the hardness and intensity for the hollow sheeting for making to obtain increase, it is difficult to the situation of having a rebound after bending is carried out to hollow sheeting, so as to ensure that the device using the hollow sheeting has good outward appearance and performance, to lift the quality of product.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of hollow sheeting master batch, hollow sheeting and refrigerator.
Background technology
Refrigerator is to maintain a kind of refrigeration plant of constant low temperature, and one kind makes food or other articles keep constant low temperature
The product for civilian use of cold conditions.The refrigeration system of refrigerator includes evaporator, compressor, condenser and capillary etc., these parts point
It is distributed on casing or in casing, for providing cold into casing.Wherein, in addition to the refrigeration of refrigeration system, case
The structure and performance of body are also to evaluate the important indicator of refrigerator quality.At present, the backboard of refrigerator is usually that polypropylene (PP) is hollow
Plate 10 (referring to Fig. 1 and Fig. 2), because the reason for material and structure, polypropylene hollow-board 10 is softer, it is impossible to direct hot bending, folding
Intensity difference after roll forming, without installability.Also, right angle condition can not be kept after the bending of polypropylene hollow-board 10, is held
Easily have a rebound, so as to which the outward appearance and performance of back boards can be influenceed.
The content of the invention
The main object of the present invention is to provide a kind of hollow sheeting master batch, it is intended to solves after hollow sheeting bending intensity difference and easily anti-
The problem of bullet.
To achieve the above object, the raw material of hollow sheeting master batch proposed by the present invention includes polypropylene 92~98 by weight
Part, 10~15 parts of ethylene/propene copolymer, 60~65 parts of ethylene-propylene copolymer, 27~32 parts of EPDM copolymer rubber, low molecule
0.9~1.2 part of 4~8 parts of weight northylen, 0.9~1.3 part of antioxidant, 17.1~21.8 parts of talcum powder and chlorinated paraffin.
Preferably, the raw material of the hollow sheeting master batch includes 95 parts of polypropylene, ethylene/propene copolymer 10 by weight
Part, 60 parts of ethylene-propylene copolymer, 30 parts of EPDM copolymer rubber, 6 parts of low molecular weight polyethylene, 1.1 parts of antioxidant, talcum powder
19 parts and 1 part of chlorinated paraffin.
Preferably, the weight of ethene and propylene ratio is 3 in ethylene/propene copolymer:1.
Preferably, antioxidant includes antioxidant 1010 and anti-oxidant DLTP, antioxidant 1010 in the hollow sheeting master batch
Parts by weight are 0.4~0.6 part and the parts by weight of anti-oxidant DLTP are 0.5~0.7 part.
In addition, the present invention also provides a kind of hollow sheeting, it is by above-mentioned hollow sheeting master batch extrusion molding.
Preferably, the hollow sheeting includes the multiple laminates set face to face and connects the more of the adjacent laminate
Individual first support bar, surface of first support bar along the laminate extend and tilted relative to the surface of the laminate.
Preferably, the hollow sheeting also includes connecting the adjacent laminate and extended along the surface of the laminate multiple
Second support bar；
Second support bar is obliquely installed relative to the laminate, first support bar, or, second support
Bar is vertical with the laminate.
Preferably, first support bar is connected with each other with second support bar.
Preferably, the hollow sheeting can bending to form bending line, the bearing of trend of first support bar relative to
The bending line tilts.
Further, the present invention also provides a kind of refrigerator, and it includes casing and the chamber door being arranged on the casing, described
The backboard of casing is above-mentioned hollow sheeting.
In technical scheme, hollow sheeting master batch is made using the multiple material of said ratio, then by being extruded into
Type manufacture hollow sheeting, so as to get hollow sheeting hardness and intensity increase, to hollow sheeting carry out bending after be difficult to have a rebound
Situation, so as to ensure that the device using the hollow sheeting has good outward appearance and performance, to lift the quality of product.And
And the fragility of hollow sheeting master batch can be adjusted for chlorinated paraffin, the flowing masterbatch of low molecular weight polyethylene can be used for extending
The regulation of property, so as to optimize the properties of hollow sheeting.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the schematic cross-sectional view of existing polypropylene hollow-board；
Fig. 2 is schematic cross-sectional view of Fig. 1 polypropylene hollow-board after bending；
Fig. 3 is the schematic cross-sectional view of the hollow sheeting of one embodiment of the invention；
Fig. 4 is front view of Fig. 3 hollow sheeting after bending；
Fig. 5 is the schematic cross-sectional view of the hollow sheeting of another embodiment of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Polypropylene hollow-board | 20 | Hollow sheeting |
| 21 | Laminate | 22 | First support bar |
| 23 | Second support bar | 24 | Bending line |
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining the relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., if should
When particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
Also, the technical scheme between each embodiment of the present invention can be combined with each other, but must be general with this area
Logical technical staff can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize this
The combination of technical scheme is not present, also not within the protection domain of application claims.
The present invention provides a kind of hollow sheeting master batch, it is intended to solves the problems, such as intensity difference after hollow sheeting bending and easily rebounds.
First, a kind of hollow sheeting master batch provided in an embodiment of the present invention, its raw material can include polypropylene by weight
92~98 parts, 10~15 parts of ethylene/propene copolymer (EPM), 60~65 parts of ethylene-propylene copolymer (OCP), EPDM copolymerization rubber
27~32 parts of glue (EPDM), 4~8 parts of low molecular weight polyethylene (LMWPE), 0.9~1.3 part of antioxidant, talcum powder 17.1~
21.8 parts and 0.9~1.2 part of chlorinated paraffin.Wherein, manufacture hollow sheeting master batch when, first with chlorinated paraffin to talcum powder at
Reason, obtains the mixture of chlorinated paraffin and talcum powder, wherein, the weight accounting of chlorinated paraffin is about 5% in the mixture,
Then the mixture and other raw materials are subjected to mix again.
Hollow sheeting master batch is made using the multiple material of said ratio, then hollow sheeting 20 is manufactured by extrusion molding so that
Hardness and the intensity increase of the hollow sheeting 20 arrived, are difficult to the situation of having a rebound after bending is carried out to hollow sheeting 20, so as to
Ensure that there is good outward appearance and performance using the device of the hollow sheeting 20.Also, chlorinated paraffin can be to hollow sheeting master batch
Fragility is adjusted, and the flowing masterbatch of low molecular weight polyethylene can be used for the regulation of ductility, so as to optimize hollow sheeting 20
Properties, to lift the quality of product.
Wherein, the main component of talcum powder is the aqueous magnesium silicate of talcum, and it has good lubricity, and can increase
The stability of shape of product, and increase tensile strength, shear strength, flexural strength and intensity of pressure of product etc..Above-mentioned
Mix is preferably carried out using the talcum powder after chlorinated paraffin is handled in embodiment, make it that it is suitable that hollow sheeting master batch has
Fragility.
In addition, the weight ratio preferably 3 of ethene and propylene in ethylene/propene copolymer:1, to optimize the power of hollow sheeting 20
Learn performance, it should be noted that, the weight of ethene and propylene ratio can also be 2 in ethylene/propene copolymer:1~4:1, to adapt to
The different mechanical requirements of hollow sheeting 20.Ethylene-propylene copolymer be ethene, propylene copolymer, its tackifying ability and shear stability compared with
Good, it can lift the stability of the properties of hollow sheeting 20.EPDM copolymer rubber is ethene, propylene and on a small quantity non-common
The copolymer of yoke alkadienes, it is one kind of EP rubbers, because its main chain is made up of chemically stable saturated hydrocarbons, only in side chain
Containing unsaturated double-bond, therefore the ageing-resistant performance such as its resistance to ozone, heat-resisting, weather-proof is excellent.Low molecular weight polyethylene can be flowing
Masterbatch, it is the wax-like polyethylene kind that usual molecular weight only has 500~5000, is the good processing aid of plastics, rubber.
In addition, antioxidant includes antioxidant 1010 and anti-oxidant DLTP, antioxidant 1010 is primary anti-oxidant, and antioxidant
DLTP is auxiliary antioxidant, to prevent polymer substance from thermally decomposing.Specifically, in above-mentioned hollow sheeting master batch antioxidant 1010 weight
It can be able to be 0.5~0.7 part for the parts by weight of 0.4~0.6 part and anti-oxidant DLTP to measure part.
Technical scheme will be further detailed by multiple embodiments below.
Embodiment 1
A kind of hollow sheeting master batch, its raw material include 95 parts of polypropylene, 10 parts of ethylene/propene copolymer, second by weight
It is 60 parts of propylene copolymer, 30 parts of EPDM copolymer rubber, 6 parts of low molecular weight polyethylene, 0.5 part of antioxidant 1010, anti-oxidant
1 part of 0.6 part of agent DLTP, 19 parts of talcum powder and chlorinated paraffin.
Embodiment 2
A kind of hollow sheeting master batch, its raw material include 92 parts of polypropylene, 10 parts of ethylene/propene copolymer, second by weight
It is 60 parts of propylene copolymer, 27 parts of EPDM copolymer rubber, 4 parts of low molecular weight polyethylene, 0.4 part of antioxidant 1010, anti-oxidant
0.9 part of 0.5 part of agent DLTP, 17.1 parts of talcum powder and chlorinated paraffin.
Embodiment 3
A kind of hollow sheeting master batch, its raw material include 98 parts of polypropylene, 15 parts of ethylene/propene copolymer, second by weight
It is 65 parts of propylene copolymer, 32 parts of EPDM copolymer rubber, 8 parts of low molecular weight polyethylene, 0.6 part of antioxidant 1010, anti-oxidant
1.2 parts of 0.7 part of agent DLTP, 21.8 parts of talcum powder and chlorinated paraffin.
Embodiment 4
A kind of hollow sheeting master batch, its raw material include 92 parts of polypropylene, 15 parts of ethylene/propene copolymer, second by weight
It is 65 parts of propylene copolymer, 30 parts of EPDM copolymer rubber, 6 parts of low molecular weight polyethylene, 0.6 part of antioxidant 1010, anti-oxidant
1.2 parts of 0.7 part of agent DLTP, 21.8 parts of talcum powder and chlorinated paraffin.
Embodiment 5
A kind of hollow sheeting master batch, its raw material include 98 parts of polypropylene, 10 parts of ethylene/propene copolymer, second by weight
It is 65 parts of propylene copolymer, 27 parts of EPDM copolymer rubber, 4 parts of low molecular weight polyethylene, 0.4 part of antioxidant 1010, anti-oxidant
1 part of 0.7 part of agent DLTP, 19 parts of talcum powder and chlorinated paraffin.
Embodiment 6
A kind of hollow sheeting master batch, its raw material include 95 parts of polypropylene, 13 parts of ethylene/propene copolymer, second by weight
It is 62 parts of propylene copolymer, 30 parts of EPDM copolymer rubber, 6 parts of low molecular weight polyethylene, 0.5 part of antioxidant 1010, anti-oxidant
1 part of 0.6 part of agent DLTP, 19 parts of talcum powder and chlorinated paraffin.
Further, the present invention also provides a kind of hollow sheeting 20, and it is by above-mentioned hollow sheeting master batch extrusion molding.Using upper
The multiple material for stating proportioning is made hollow sheeting master batch, then pass through extrusion molding and manufacture hollow sheeting 20, so as to get hollow sheeting 20
Hardness and intensity increase, are difficult to the situation of having a rebound after bending is carried out to hollow sheeting 20, hollow using this so as to ensure
The device of plate 20 has good outward appearance and performance.
Wherein, when judging the quality of hollow sheeting, it is commonly employed in the art to the pull-off force of hollow sheeting, elongation at break,
The mode that the performances such as tear edge, flat compressed power and vertical compression force are assessed, specific hollow sheeting Performance Evaluation standard
It is shown in Table 1.
The hollow sheeting Performance Evaluation standard scale of table 1
In actual production process, the hollow sheeting master batch of above-mentioned each embodiment is used to manufacture thickness as 1.3mm's first
Hollow sheeting 20, the various performance parameters of obtained each hollow sheeting 20 are specifically shown in Table 2.
The thickness of table 2 is 1.3mm hollow sheeting performance table
Then, the hollow sheeting master batch of above-mentioned each embodiment is used to manufacture thickness as 2.5mm hollow sheeting 20, what is obtained is each
The various performance parameters of individual hollow sheeting 20 are specifically shown in Table 3.
The thickness of table 3 is 2.5mm hollow sheeting performance table
Parameter in table 2, table 3 is compared, it is apparent that using above-mentioned each embodiment with the standard value of table 1
The hollow sheeting that hollow sheeting master batch manufactures to obtain has good mechanical property, meets the index of high-class product.Also, to using not
The hollow sheeting 20 of the different-thickness obtained with embodiment is difficult to the situation of having a rebound after carrying out bending, should so as to ensure to use
The device of hollow sheeting 20 has good outward appearance and performance, to lift the quality of product.
In addition, in order to further increase the intensity of hollow sheeting 20, in a more preferred embodiment, as shown in Figure 3 and Figure 5,
Hollow sheeting 20 includes the multiple laminates 21 set face to face and multiple first support bars 22 for connecting adjacent laminate 21, the
Surface of one support bar 22 along laminate 21 extends and tilted relative to the surface of laminate 21, multiple the first support bars being obliquely installed
22 collective effects, to lift the stability of hollow sheeting 20.It should be noted that the quantity of Fig. 3 and Fig. 5 middle plates 21 is two
Block, and in other examples, the quantity of laminate 21 can also be three pieces, four pieces or more polylith, and polylith laminate 21 is preferred
To be arranged in parallel.
Further, on the basis of above-described embodiment, hollow sheeting 20 also includes connecting adjacent laminate 21 and along laminate
Multiple second support bars 23 of 21 surface extension.Wherein, the second support bar 23 is respectively relative to laminate 21, the first support bar 22
It is obliquely installed, or, the second support bar 23 is vertical with laminate 21.By the cooperation of the first support bar 22 and the second support bar 23,
Laminate 21 can be supported from multiple angles, so as to lift every mechanical property of hollow sheeting 20.Also, first
The support bar 23 of stay 22 and second is preferably to be connected with each other, and specifically, the first support bar 22 and the second support bar 23 can be in layers
It is connected with each other at plate 21 (referring to Fig. 3 and Fig. 5), or, it can also be the middle part in the first support bar 22 and the second support bar 23
Intersect connection, to form overall supporting construction, and then further to increase the intensity of hollow sheeting 20.
Wherein, in a preferred embodiment, as shown in Figure 3 and Figure 4, the bearing of trend of the first support bar 22 and the second support
The bearing of trend of bar 23 is parallel, consequently facilitating the extrusion molding of hollow sheeting 20, i.e. can be according to the section shape shown in Fig. 3 and Fig. 5
Shape makes the extrusion interface of mould.
In addition, hollow sheeting 20 can bending to form bending line 24, the bearing of trend of the first support bar 22 is relative to bending
Line 24 tilts so that the first support bar 22 on the bending section of hollow sheeting 20 be present, so that hollow sheeting 20 can be after bending
Fixed angle is kept, prevents rebound phenomena.Also, in a preferred embodiment, on the bending section of hollow sheeting 20 also
The second support bar 23 is there are, further to lift the stability of the hollow sheeting 20 of bending state, so as to ensure to use
The device of the hollow sheeting 20 has good outward appearance and performance, to lift the quality of product.
Further, the present invention also provides a kind of refrigerator (not shown), and it includes casing (not shown) and is arranged at casing
On chamber door (not shown), the backboard of casing is above-mentioned hollow sheeting.Because the refrigerator employs the complete of above-mentioned all embodiments
Portion's technical scheme, therefore all beneficial effects at least caused by the technical scheme with above-described embodiment, herein no longer one by one
Repeat.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in the scope of patent protection of the present invention.
Claims (10)
- A kind of 1. hollow sheeting master batch, it is characterised in that the raw material of the hollow sheeting master batch by weight include polypropylene 92~ 98 parts, 10~15 parts of ethylene/propene copolymer, 60~65 parts of ethylene-propylene copolymer, 27~32 parts, low point of EPDM copolymer rubber 0.9~1.2 part of sub- 4~8 parts of weight northylen, 0.9~1.3 part of antioxidant, 17.1~21.8 parts of talcum powder and chlorinated paraffin.
- 2. hollow sheeting master batch according to claim 1, it is characterised in that the raw material of the hollow sheeting master batch is by weight Including 95 parts of polypropylene, 10 parts of ethylene/propene copolymer, 60 parts of ethylene-propylene copolymer, 30 parts of EPDM copolymer rubber, low molecule 1 part of 6 parts of weight northylen, 1.1 parts of antioxidant, 19 parts of talcum powder and chlorinated paraffin.
- 3. hollow sheeting master batch according to claim 1 or 2, it is characterised in that ethene and propylene in ethylene/propene copolymer Weight ratio be 3:1.
- 4. hollow sheeting master batch according to claim 1 or 2, it is characterised in that antioxidant includes antioxidant 1010 and antioxygen Agent DLTP, the parts by weight of antioxidant 1010 are 0.4~0.6 part in the hollow sheeting master batch and the parts by weight of anti-oxidant DLTP are 0.5~0.7 part.
- 5. a kind of hollow sheeting, it is characterised in that the hollow sheeting is squeezed as the hollow sheeting master batch any one of claim 1-4 Go out shaping.
- 6. hollow sheeting according to claim 5, it is characterised in that the hollow sheeting includes the multiple layers set face to face Multiple first support bars of plate and the adjacent laminate of connection, surface extension of first support bar along the laminate and Tilted relative to the surface of the laminate.
- 7. hollow sheeting according to claim 6, it is characterised in that the hollow sheeting also includes connecting the adjacent laminate And multiple second support bars extended along the surface of the laminate；Second support bar is obliquely installed relative to the laminate, first support bar, or, second support bar with The laminate is vertical.
- 8. hollow sheeting according to claim 7, it is characterised in that first support bar and second support bar are mutual Connection.
- 9. according to the hollow sheeting any one of claim 6-8, it is characterised in that the hollow sheeting can bending to be formed Bending line, the bearing of trend of first support bar tilt relative to the bending line.
- 10. a kind of refrigerator, it is characterised in that the refrigerator includes casing and the chamber door being arranged on the casing, the casing Backboard be the hollow sheeting any one of claim 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586290.6A CN107383596A (en) | 2017-07-18 | 2017-07-18 | Hollow sheeting master batch, hollow sheeting and refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586290.6A CN107383596A (en) | 2017-07-18 | 2017-07-18 | Hollow sheeting master batch, hollow sheeting and refrigerator |
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| Publication Number | Publication Date |
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| CN107383596A true CN107383596A (en) | 2017-11-24 |
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| CN201710586290.6A Pending CN107383596A (en) | 2017-07-18 | 2017-07-18 | Hollow sheeting master batch, hollow sheeting and refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111218067A (en) * | 2020-03-05 | 2020-06-02 | 厦门诚斌塑胶制品有限公司 | Novel PP hollow plate and preparation method thereof |
| CN111218067B (en) * | 2020-03-05 | 2023-01-24 | 青岛朗夫科技股份有限公司 | PP hollow plate and preparation method thereof |
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