CN206383612U - A kind of microwave exhaust membrane and degassing bag - Google Patents

Abstract

A kind of microwave exhaust membrane, microwave exhaust membrane includes by a laser formation at least line of weakness in outer layer and internal layer, microwave exhaust membrane, and line of weakness middle part forms an at least corner, wherein, line of weakness is burnt in outer layer, and a collapse dept is only formed in internal layer.In internal layer is 5 10 microns through laser-formed collapse dept.Line of weakness is W shapes, S-shaped, V-arrangement, U-shaped or waveform.Cladding material is biaxially oriented polyester film, bidirectional stretching polypropylene film or two-way stretching polyamide film, and inner layer material is polyethylene film or cast polypropylene film.Such as the Microwave exhaust bag that above-mentioned microwave exhaust membrane is made, Microwave exhaust bag is provided with an at least line of weakness.The utility model can avoid microwave exhaust outlet from directly bursting out, and produce larger explosion sound, and improve the defect using preceding barrier property difference.

Description

A kind of microwave exhaust membrane and degassing bag

Technical field

The utility model is related to technical field of soft package, more particularly to a kind of available for the packaging film of micro-wave oven and by the bag The packaging bag that dress film is made.

Background technology

With the raising of modern life level, micro-wave oven is increasingly popularized, and almost every household has micro-wave oven, now general Logical micro-wave oven sack does not have exhaust outlet, by heating, and sack can be blown after the gas in sack is expanded, easily scalds and uses Person, it is very dangerous.

Have to use in present method and first cut the composite membrane of micro-wave oven sack completely, then stick adhesive sticker, make it micro- Broken through in wave process.Such method easily makes the content seepage in bag, bad to content barrier, and production adds Work is inefficient, and yield rate is not high, also not environmentally.

Utility model content

The purpose of this utility model is to provide a kind of microwave exhaust membrane and degassing bag, and it can avoid microwave exhaust outlet direct Burst out, produce larger explosion sound, and improve the defect using preceding barrier property difference.

In order to reach above-mentioned purpose, solution of the present utility model is：

A kind of microwave exhaust membrane, microwave exhaust membrane include in outer layer and internal layer, microwave exhaust membrane by laser formed to An at least corner is formed in the middle part of a few line of weakness, line of weakness, wherein, line of weakness is burnt in outer layer, and one is only formed in internal layer Collapse dept.

Further, in internal layer through laser-formed collapse dept be 5-10 microns.

Further, line of weakness is W shapes, S-shaped, V-arrangement, U-shaped or waveform.

Further, cladding material is biaxially oriented polyester film, bidirectional stretching polypropylene film or two-way stretching polyamide Film, inner layer material is polyethylene film or cast polypropylene film.

Further, the Microwave exhaust bag being made up of above-mentioned microwave exhaust membrane, Microwave exhaust bag is provided with an at least line of weakness.

After said structure, the utility model on microwave exhaust membrane or Microwave exhaust bag by being provided with an at least indentation Line, line of weakness is formed in the non-linear shape indentation with corner, line of weakness by laser treatment in microwave exhaust membrane outer layer Corner forms stress concentration point, it is easier to destroy inner layer material, the stress raiser destruction that line of weakness can be on the corner, disperses Force of explosion, it is to avoid directly burst out after linear line of weakness explosion, produce larger explosion sound.And line of weakness is not because complete Full destruction inner layer material, before use will not seepage, have preferable block-water performance.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model first embodiment；

Fig. 2 is the structural representation of the utility model first embodiment；

Fig. 3 is the structural representation of the utility model first embodiment.

Embodiment

In order to which the technical solution of the utility model is explained further, the utility model is entered below by specific embodiment Row is elaborated.

Microwave exhaust membrane of the present utility model is lamination layer structure, includes outer layer and internal layer, cladding material in composite bed For PET, BOPP or NY etc., internal layer is hot sealing layer, and inner layer material is PE or CPP.Composite bed is composited from outside to inside, Ke Yishi Such as PET/PE（Outer layer PET, internal layer PE）Combination or NY/CPP（Outer layer NY, internal layer CPP）To form multiple etc. being combined Close layer.Wherein, PET is that biaxially oriented polyester film, BOPP are that bidirectional stretching polypropylene film, NY are that two-way stretching polyamide is thin Film, PE are that polyethylene film, CPP are cast polypropylene films.

To make microwave exhaust membrane be easier to rise brokenly internal layer during microwave use and larger explosion sound will not be produced, so that Reach in microwave degassing function, the utility model, by a laser formation at least line of weakness in microwave exhaust membrane, line of weakness is An at least corner is formed in the middle part of nonlinear type, and line of weakness, line of weakness can be W shapes, S-shaped, V-arrangement etc.（Such as Fig. 1 to Fig. 3 institutes Show）.CO can be used in composite membrane₂The mode of laser or UV laser, using CO₂Outer layer is all destroyed shape by laser or UV laser Into line of weakness, make line of weakness be burnt in outer layer, and control internal layer only to burn destruction part, a destruction is only formed in internal layer deep Degree, so as to form barrier, and can promote explosion, controllable internal layer is only destroyed in 5-10 microns, i.e. internal layer through laser-formed broken Bad depth is 5-10 microns.Because composite membrane is transparent, laser can burn outer layer and internal layer, pass through laser power control, control Composite membrane burns in outer layer, and 5-10 microns of the depth that internal layer burns.

Be as shown in figure 1, first embodiment of the present utility model, shown in figure using above-mentioned microwave exhaust membrane be made it is micro- Ripple degassing bag 1, the line of weakness 2 being provided with Microwave exhaust bag 1 in an at least line of weakness 2, the present embodiment is W shapes.Line of weakness 2 leads to Laser treatment is crossed, the corner formed in outer layer in the non-linear shape indentation with bending corner, the line of weakness 2 of W shapes is formed Stress concentration point, it is easier to destroy the inner layer material of Microwave exhaust bag.When microwave exhaust membrane is during microwave use, can more it hold Easily rise brokenly internal layer, and during inner layer material destruction, because the stress raiser destruction that line of weakness can be on the corner, has disperseed explosion Power, it is to avoid directly burst out after linear line of weakness explosion, and can produce larger explosion sound, line of weakness 2 after disruption, It can reach microwave degassing function.And microwave exhaust membrane or Microwave exhaust bag are not put into microwave in use, and line of weakness 2 because not complete Full destruction inner layer material, before use will not seepage, have preferable block-water performance.

As shown in Figure 2 and Figure 3 be second embodiment of the present utility model and 3rd embodiment, its line of weakness 2 be respectively S-shaped, V-arrangement, certainly, line of weakness are alternatively U-shaped or waveform etc., and bending or curved corner etc. are formed with the middle part of line of weakness.

The utility model on microwave exhaust membrane or Microwave exhaust bag by being provided with an at least line of weakness, and line of weakness is by swashing Light processing, the corner formed in microwave exhaust membrane outer layer in the non-linear shape indentation with corner, line of weakness forms stress Centrostigma, it is easier to destroy inner layer material, the stress raiser destruction that line of weakness can be on the corner, has disperseed force of explosion, it is to avoid Directly burst out after linear line of weakness explosion, and larger explosion sound can be produced.And line of weakness is because in complete destruction Layer material, before use will not seepage, have preferable block-water performance.

Above-described embodiment and schema and non-limiting product form of the present utility model and style, any art Appropriate change or modification that those of ordinary skill is done to it, all should be regarded as not departing from patent category of the present utility model.

Claims (5)

1. a kind of microwave exhaust membrane, microwave exhaust membrane includes outer layer and internal layer, it is characterised in that：By swashing in microwave exhaust membrane An at least corner is formed in the middle part of a light formation at least line of weakness, line of weakness, wherein, line of weakness burns in outer layer, in internal layer Only form a collapse dept.

2. a kind of microwave exhaust membrane as claimed in claim 1, it is characterised in that：In internal layer through laser-formed collapse dept For 5-10 microns.

3. a kind of microwave exhaust membrane as claimed in claim 1 or 2, it is characterised in that：Line of weakness be W shapes, S-shaped, V-arrangement, U-shaped or Waveform.

4. a kind of microwave exhaust membrane as claimed in claim 1, it is characterised in that：Cladding material be biaxially oriented polyester film, Bidirectional stretching polypropylene film or two-way stretching polyamide film, inner layer material are polyethylene film or cast polypropylene film.

5. the Microwave exhaust bag made by a kind of microwave exhaust membrane as Claims 1-4 any one, it is characterised in that：It is micro- Ripple degassing bag is provided with an at least line of weakness.