CN209738451U

CN209738451U - heat insulation structure

Info

Publication number: CN209738451U
Application number: CN201920015397.XU
Authority: CN
Inventors: 林欲晓
Original assignee: Xiamen Ai Sike Cold Chain Technology Co Ltd
Current assignee: Xiamen Ai Sike Cold Chain Technology Co Ltd
Priority date: 2018-12-11
Filing date: 2019-01-04
Publication date: 2019-12-06
Anticipated expiration: 2029-01-04

Abstract

The utility model discloses a heat insulation structure, which comprises a PE shell interlayer which is rotationally molded and has a hollow structure, wherein an EPE connecting layer is attached to the inner surface of the PE shell interlayer, and a PU foaming filling layer is filled in the EPE connecting layer; the EPE connecting layer is welded with the inner surface of the PE shell interlayer; the PU foaming filling layer is bonded with the EPE connecting layer. The PE shell interlayer, the EPE connecting layer and the PU foaming filling layer form a composite heat insulation structure to form a firm whole, the strength is greatly improved, the deformation resistance is improved, and deformation, bulging or delamination are not easy to occur even if the composite heat insulation structure is repeatedly used.

Description

Heat insulation structure

Technical Field

The utility model relates to a thermal insulation structure especially relates to a thermal insulation can.

Background

The incubator has a heat-insulating function for cold storage or heat insulation, for example, for containing dry ice, in addition to the storage function of the ordinary storage box. The current insulation can, its tank wall adopts PE as plastic casing, inside filling PU rigid foam is as the structure of heat preservation filler material, though have better heat preservation effect, but, can not combine well between PE shell intermediate layer and the PU rigid foam filler material and form a firm whole, it is easy to warp actually in the use, debond, the raising etc. if be used for adorning the article that have fixed inch size, for example, have the dry ice of fixed shape, in case the tank wall warp or inside have the swell will influence the vanning volume, especially, after PE shell intermediate layer led to the fact the damage in the use, water stain can directly permeate PU rigid foam in the middle of destroying the heat insulating layer and directly lead to the case to scrap. Furthermore, in the conventional incubator, in order to improve the protection of the PU rigid foam, the interlayer of the PE shell is generally thick, which results in a heavy weight of the incubator and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heat insulation structure, it has overcome the not enough that the background art exists. The utility model provides a technical scheme that its technical problem adopted is:

The heat insulation structure comprises a PE shell interlayer which is rotationally molded and has a hollow structure, wherein an EPE connecting layer is attached to the inner surface of the PE shell interlayer, and a PU foaming filling layer is filled in the EPE connecting layer; the EPE connecting layer is welded with the inner surface of the PE shell interlayer; the PU foaming filling layer is bonded with the EPE connecting layer.

In a preferred embodiment: the EPE connecting layer is formed by directly foaming EPE materials by means of heat generated by rotational molding of the PE shell interlayer.

In a preferred embodiment: the PU foaming filling layer is formed by foaming PU foaming materials through a high-pressure foaming machine.

In a preferred embodiment: the thickness of the PE shell interlayer is 3-5mm, the thickness of the EPE connecting layer is 5-10mm, and the thickness of the PU foaming filling layer is more than or equal to 40 mm.

Compared with the background technology, the technical scheme has the following advantages:

the EPE connecting layer is arranged between the PE shell interlayer and the PU foaming filling layer, the EPE connecting layer can be well combined with the PE shell interlayer and also can be well combined with the PU foaming filling layer, thus, the PE shell interlayer, the EPE connecting layer and the PU foaming filling layer form a composite heat insulation structure to form a firm whole, the strength is greatly improved, the deformation resistance is increased, and the repeated use is difficult to deform, bulge or delaminate.

The EPE connecting layer forms the second protective layer in PE shell intermediate layer inside, and in the use, can improve the interbedded intensity of PE shell and toughness in the actual, makes PE shell intermediate layer and EPE connecting layer also can carry out better protection to PU foaming filling layer, improves product life.

3. Under the condition of the same strength requirement, the thickness of the interlayer of the PE shell can be reduced to 2mm, the PE dosage is reduced, and the cost and the product weight can be reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view illustrating the heat insulation structure of the present invention.

Detailed Description

Referring to fig. 1, the heat insulation structure includes a PE shell interlayer 10 formed by rotational molding and having a hollow structure, an EPE connection layer 20 is attached to an inner surface of the PE shell interlayer, and a PU foam filling layer 30 is filled in the EPE connection layer. The polarity of the EPE material is between that of the PE material and that of the PU material, so that a good connection effect can be achieved, the PE shell interlayer 10 and the PU foaming filling layer 30 are connected into a whole, the heat insulation performance of the EPE material is superior to that of the PE material, and the heat insulation performance of a product can be improved.

The EPE tie layer 20 is fused to the inner surface of the PE jacket interlayer 10. The PU foam filling layer 30 is bonded with the EPE connecting layer 20.

The thickness of the PE shell interlayer 10 is 3-5mm, the thickness of the EPE connecting layer 20 is 5-10mm, and the thickness of the PU foaming filling layer 30 is more than or equal to 40 mm.

The forming method of the heat insulation structure adopts a rotational molding method of a rotational molding machine to form the PE shell interlayer 10 with a hollow structure in advance; then, the PE shell interlayer is still on the rotational molding machine, EPE particles (i.e. expandable PE particles) are injected into the PE shell interlayer 10 through the filling holes on the PE shell interlayer 10, the rotational molding machine drives the PE shell interlayer 10 to roll, so that the EPE particles are uniformly distributed on the inner surface of the PE shell interlayer 10, and the temperature of the PE shell interlayer 10 itself causes the EPE particles to foam to form an EPE connection layer 20, and the EPE connection layer 20 is welded on the inner surface of the PE shell interlayer; and then, taking the PE shell interlayer 10 and the EPE connecting layer 20 attached to the inner surface of the PE shell interlayer off a rotational molding machine, cooling and shaping, finally, placing the cooled PE shell interlayer and the EPE connecting layer in a PU mold, injecting PU foaming material into the PU mold by a high-pressure foaming machine for foaming, and performing foaming molding on the PU foaming material in the EPE connecting layer 20 to obtain the PU foaming filling layer 30 filling the inner cavity of the EPE connecting layer. The foamed PU foaming filling layer 30 is adhered to the EPE connecting layer 20.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims

1. Adiabatic insulation construction, include rotational moulding shaping and be hollow structure's PE shell intermediate layer, its characterized in that: the inner surface of the PE shell interlayer is attached with an EPE connecting layer, and a PU foaming filling layer is filled in the EPE connecting layer; the EPE connecting layer is welded with the inner surface of the PE shell interlayer; the PU foaming filling layer is bonded with the EPE connecting layer.

2. The heat insulating and preserving structure as claimed in claim 1, wherein: the EPE connecting layer is formed by directly foaming EPE materials by means of heat generated by rotational molding of the PE shell interlayer.

3. The heat insulating and preserving structure as claimed in claim 1, wherein: the PU foaming filling layer is formed by foaming PU foaming materials through a high-pressure foaming machine.

4. The heat insulating and preserving structure as claimed in claim 1, wherein: the thickness of the PE shell interlayer is 3-5mm, the thickness of the EPE connecting layer is 5-10mm, and the thickness of the PU foaming filling layer is more than or equal to 40 mm.