CN2413898Y - Insulation sleeve - Google Patents

Abstract

The utility model discloses a by the polyethylene film on top layer, the crosslinking of medial crosslinked polyethylene obturator foaming board, inlayer or do not have crosslinked obturator foaming tubular product to constitute, the polyethylene film on top layer hugs closely on medial crosslinked polyethylene obturator foaming board to make compound knurling shape, this just has simple to operate, beautifully and not corrugate when bending, thermal-insulated effectual, antisweat performance is good, the advantage of the little easy mass production of production facility investment.

Description

Insulation sleeve

The utility model relates to a thermal insulation pipe sleeve suitable for heat insulation of conveying pipes of refrigeration (heat) equipment.

Present thermal insulation pipe cover, a kind of is foamed rubber-plastic heat insulation thermal insulation pipe, and this material is matter soft, and pipeline friction is big, is used for the installation (interspersed) of small and medium-sized pipeline more difficult. The investment in production equipment is relatively large, and the price of raw materials is relatively high. Another kind of polyethylene balance foam insulation pipe, soft in quality, easy to install (interpenetrate) small and medium-sized pipes, small in equipment investment, and relatively cheap in raw material prices. There are mainly seamless foam pipes formed by one-step forming and two-step forming The main disadvantages of the seamed insulation pipe (made of sheet material) are: no protective layer, the protective layer should be wrapped during construction, the foam material is easy to be damaged, the seam is easy to crack, the airtightness is poor, and it is easy to break. Condensation phenomenon, and other foaming materials such as polystyrene and polyurethane have relatively hard shells, which are inconvenient for small and medium-sized pipeline construction. All of the above are single-layer foam products with smooth surfaces and easy to wrinkle when bent.

The purpose of the utility model is to provide a thermal insulation pipe sleeve with good heat insulation effect, good anti-condensation performance, beautiful appearance, no wrinkle when bent, and convenient installation.

In order to achieve the above object, the insulation pipe sleeve of the present utility model is composed of a polyethylene film on the surface, a cross-linked polyethylene closed-cell foam sheet in the middle layer, a cross-linked or invalid-linked closed-cell foam pipe in the inner layer, and a polyethylene film in the surface layer. The film is tightly attached to the cross-linked polyethylene closed-cell foam sheet in the middle layer and made into a composite embossed shape.

After adopting such a structure, the utility model has the following advantages:

1. The structure is a three-layer product, which can be flexibly matched to make products with different requirements.

2. The surface layer is embossed, which is beautiful and does not wrinkle when bent.

3. Layers are sealed to each other, with excellent heat insulation effect and good anti-condensation performance.

4. It has a beautiful embossing and protective layer, so there is no need to wrap other protective films when using it.

5. It is convenient and easy to install (interpenetrate) small and medium-sized pipelines.

6. Small equipment investment and easy mass production.

Fig. 1 is a structural schematic diagram of a specific embodiment of the utility model.

As shown in Figure 1, the insulation pipe sleeve of the present invention is composed of a polyethylene film 1 on the surface, a cross-linked polyethylene closed-cell foam sheet 2 in the middle layer, and a cross-linked or non-cross-linked closed-cell foam pipe 3 in the inner layer. The polyethylene film 1 of the surface layer is closely attached to the cross-linked polyethylene closed-cell foam board 2 of the middle layer, and is made into a composite embossed shape. The thermal insulation material of the thermal insulation pipe sleeve of the utility model adopts butane gas physical extrusion and foaming technology to form the inner layer in one step. The middle insulation material and the outer protective layer are formed by hot-melt embossing of molded chemical foam sheet and polyethylene film. Finally, the inner foam tube and the preformed foam sheet are made into a tube shape by heat fusion.

Claims (1)

1, a kind of heat-insulating cover, it is characterized in that: this heat-insulating cover is by the crosslinked of the crosslinked polyethylene closed pore foaming plate (2) in the polyethylene film (1) on top layer, middle level, internal layer or do not have crosslinked closed pore foam pipe (3) and form, the polyethylene film on top layer (1) is close on the crosslinked polyethylene closed pore foaming plate (2) in middle level, and makes the composite embossed shape.

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