CN200992309Y

CN200992309Y - Hot edge-enclosuring device for food package bag used in microwave oven

Info

Publication number: CN200992309Y
Application number: CN 200620155720
Authority: CN
Inventors: 张逢辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-31
Filing date: 2006-12-31
Publication date: 2007-12-19
Anticipated expiration: 2016-12-31

Abstract

A heat-edge-sealing device for microwave oven food packaging bags comprises a frame, a lower template, an upper template, a heating device, a guide bar, a return spring and a drive device, the upper template clinging closely with the heating device. A notch horizontally running through the upper template base plane is arranged on the upper template base plane, inside which is equipped with a pressure pad accordant with the upper template base plane. The HTC of the pressure pad material is smaller than the one of the upper template body material. The device can accomplish the heat edge sealing and gas emergency vent process in one time in the process of manufacturing the food packaging bags or sealing the packed bags, which simplifies the working procedure, reduces the cost and increases the production efficiency, compared with the specialized gas emergency vent way.

Description

A kind of heat-sealing limit device that is used for the microwave food packaging bag

Technical field

The utility model relates to a kind of edge banding apparatus of food pack, particularly a kind of heat-sealing limit device that is used for the food pack of micro-wave oven heating.

Background technology

In the daily life, when people have the food of packaging bag with micro-wave oven or steamer heating, often because the food that is sealed in the bag contains certain moisture and air, it is quick-fried to produce vapour in heat process, food explosion in packaging bag and the bag thereof is sputtered on furnace wall or the pot wall, cause inconvenience edible and cleaning.Therefore, adopt usually at the edge sealing place of food bag and open an osculum, be lower than the method for this osculum of plastic sheeting capping of packaging bag bulk material then with another kind of intensity, make a gas release mouth; When heating, when gases are heated, they expand in the food bag, when pressure is increased to a certain degree, at first breaks through the plastic sheeting at this osculum place, discharges high pressure gas, plays the effect of safe release gas.There is the defective that operation is many, cost is big, production efficiency is low in the method for this making gas safety liberation port.

The utility model content

The purpose of this utility model provides a kind of heat-sealing limit device that is used for the microwave food packaging bag, is used for forming the gas safety liberation port when the heat-sealing material is the food pack of plastic sheeting class.

The technical solution of the utility model is: a kind of heat-sealing limit device that is used for the microwave food packaging bag, comprise support, lower bolster, cope match-plate pattern, electro-heat equipment, pilot bar, retracing spring, actuating device, cope match-plate pattern and electro-heat equipment are close to and are connected firmly together, wherein said cope match-plate pattern baseplane is provided with the recess that laterally runs through this plane, be provided with the pressure pad concordant with the cope match-plate pattern baseplane in the described recess, the coefficient of thermal conductivity of described pressure pad material is lower than the coefficient of thermal conductivity of cope match-plate pattern material.

The pressure pad that seals the cope match-plate pattern indent setting of limit device at this kind is at least one deck, pressure pad is made by the polytetrafluoroethylene cloth, the indent pressure pad acts on the pressure intensity at plastic bag edge sealing place less than 5N/15mm, set recess is at least one on the cope match-plate pattern baseplane, and the shape of set recess is the shape of square type, trapezoidal or arc on the cope match-plate pattern baseplane.

The operating process of the heat-sealing limit device of described packaging bag is such: after packaging bag is sealed the alignment of place, limit, be put between cope match-plate pattern and the lower bolster, the cope match-plate pattern that installs pressure pad is heated, depresses and stop a moment, rise cope match-plate pattern then, both formed heat-sealing limit and gas safe release mouth simultaneously at the impression place of cope match-plate pattern and lower bolster; Take out the food pack that has sealed then.

Use the beneficial effect of this device to be: can make food pack or install in the process that encapsulates after the food, disposablely will seal the limit and gas safe release mouth processes simultaneously, thereby simplify operation, reduce cost, improve production efficiency.

Description of drawings

Fig. 1 is the profile scheme drawing of the utility model embodiment one;

Fig. 2 is that a rectangular recess and pressure pad are set in the cope match-plate pattern baseplane is four layers scheme drawing;

Fig. 3 is the profile scheme drawing of the utility model embodiment two;

Fig. 4 is that two rectangular recess and pressure pad are set in the cope match-plate pattern baseplane is four layers scheme drawing;

Fig. 5 is that a trapezoidal recess and pressure pad are set in the cope match-plate pattern baseplane is four layers scheme drawing;

Fig. 6 is that an arc-shaped notch and pressure pad are set in the cope match-plate pattern baseplane is four layers of scheme drawing;

Fig. 7 is that a rectangle pressure pad is four layers a scheme drawing;

Fig. 8 is that a rectangle pressure pad is single layer scheme drawing;

Fig. 9 is the front view that the food pack of a rectangle gas safety liberation port is arranged;

Figure 10 is the front view that the food pack of two rectangle gas safety liberation ports is arranged;

Figure 11 is the front view that the food pack of a trapezoidal gas safety liberation port and an arc gas safety liberation port is arranged.

The specific embodiment

Now 1 to 11 couple of the utility model embodiment is described further in conjunction with the accompanying drawings.

Fig. 1 and Fig. 3 show two embodiment of the heat-sealing limit device of microwave food packaging bag, comprise support 7, lower bolster 6, cope match-plate pattern 3, electro-heat equipment 2, pilot bar 1, retracing spring 5, actuating device 8; Cope match-plate pattern 3 is close to electro-heat equipment 2 and is connected firmly together; Cope match-plate pattern 3 baseplanes are provided with the recess 31 that laterally runs through this plane; Be provided with the concordant pressure pad 4 in baseplane with it in the recess 31; Lower bolster 6 and actuating device 8 are installed on the support 7; The upper end of two pilot bars 1 connects firmly the both ends on electro-heat equipment 2 respectively, and the middle part is with retracing spring 5, and bottom kink respectively is inserted through lower bolster 6 both ends through holes, and lower end and actuating device 8 power connect; Under the power driven of actuating device 8, cope match-plate pattern 3 moves up and down, thereby make the state that the plane is contact or separates on cope match-plate pattern 3 baseplanes and the lower bolster 6, to realize the hot-forming of heat-sealing plastic sheeting heat-sealing frame 91 shown in Fig. 9, Figure 10 or Figure 11 and gas safe release mouth 92.

Fig. 2, Fig. 4, Fig. 5 and Fig. 6 illustrate the recess 31 that laterally runs through cope match-plate pattern 3 baseplanes that rectangle, trapezoidal and arcuate shape are set respectively, and the shape suitable pressure pad 4 that matches is set respectively in the recess 31 with it.The coefficient of thermal conductivity of the material of pressure pad 4 is lower than the material coefficient of thermal conductivity of cope match-plate pattern 3 bodies, with the temperature on cope match-plate pattern 3 bodies at the bottom of the temperature value of guaranteeing pressure pad 4 places, make the anchoring strength of its molten plastic film far below the anchoring strength of cope match-plate pattern 3 body place molten plastic films.

Fig. 7 illustrates the pressure pad of being made by the polytetrafluoroethylene cloth 4, and this is the corresponding high temperature of a kind of ability, again suitable coefficient of thermal conductivity and elastomeric material is arranged, and its hardness is far below the hardness of cope match-plate pattern 3 bodies made from steel.

Fig. 8 illustrates pressure pad 4 and is single layer polytetrafluoroethylene cloth, comprises basic unit 41, adhesive-layer 42, is keeping good adhibit quality in the serviceability temperature scope.

The pressure pad 4 that recess 31 places that Fig. 2, Fig. 4, Fig. 5 and Fig. 6 illustrate respectively are provided with has one deck at least, to guarantee that pressure pad 4 places act on the positive pressure of heat-sealing on the plastic sheeting and are lower than cope match-plate pattern 3 body places and act on positive pressure on the heat-sealing plastic sheeting, to form gas safety liberation port 92; When the lower gas safety liberation port place intensity of needs, increase the number of plies of pressure pad 4; Otherwise, during higher if desired gas safety liberation port place intensity, reduce the number of plies of pressure pad 4.Set recess 31 has one at least on cope match-plate pattern 3 baseplanes, to guarantee forming at least one gas safety liberation port 92 when sealing compression moulding.The pressure pad 4 at recess 31 places acts on the pressure intensity at food pack heat-sealing gas safety liberation port 92 places less than 5N/15mm, to guarantee that when heating, the water vapours that produced in the food pack 9 can come out in safe releases.When the size of food pack 9 was big, gas was more in the bag, can suitably increase the quantity of gas safety liberation port 92 at the edge sealing place.

The operating process of as shown in figures 1 and 3 packaging bag heat-sealing limit device is such: after heat-sealing limit 91 alignment with the food pack 9 of Fig. 9, Figure 10 or Figure 11, be put between the cope match-plate pattern 3 and lower bolster 6 that installs pressure pad 4, the cope match-plate pattern 3 that will heat is then depressed and is stopped and moments later rises cope match-plate pattern 3.Cope match-plate pattern 3 and pressure pad 4 had both formed heat-sealing limit 91 and gas safe release mouth 92 simultaneously at the hot pressing trace place of food pack 9 like this.Take out the food pack 9 that has sealed at last.

Use as the packaging bag heat-sealing limit device of Fig. 1 or Fig. 3 can or install in the process that encapsulates after the food at manufacturing food pack 9, disposablely will seal limit 91 and gas safe release mouth 92 processes simultaneously.Thereby simplified operation, reduced cost, improved production efficiency.

Food pack heat-sealing of the present utility model limit device is not only applicable to the heat-sealing limit of microwave food packaging bag and uses, be applicable to that also other material is that use on the heat-sealing limit of the packaging bag of plastic sheeting class, as be applicable to the heat-sealing limit use etc. of steamer based food packaging bag.

Claims

1. heat-sealing limit device that is used for the microwave food packaging bag, comprise support, lower bolster, cope match-plate pattern, electro-heat equipment, pilot bar, retracing spring, actuating device, cope match-plate pattern and electro-heat equipment are close to and are connected firmly together, it is characterized in that described cope match-plate pattern baseplane is provided with the recess that laterally runs through this plane, be provided with the pressure pad concordant with the cope match-plate pattern baseplane in the described recess, the coefficient of thermal conductivity of described pressure pad material is lower than the coefficient of thermal conductivity of cope match-plate pattern bulk material.

2. a kind of heat-sealing limit device that is used for the microwave food packaging bag according to claim 1 is characterized in that the pressure pad of described recess setting is at least one deck.

3. a kind of heat-sealing limit device that is used for the microwave food packaging bag according to claim 1 is characterized in that described pressure pad made by the polytetrafluoroethylene cloth.

4. a kind of heat-sealing limit device that is used for the microwave food packaging bag according to claim 1 is characterized in that the pressure pad of described indent acts on the pressure intensity at plastic bag edge sealing place less than 5N/15mm.

5. a kind of heat-sealing limit device that is used for the microwave food packaging bag according to claim 1 is characterized in that recess set on the cope match-plate pattern baseplane is at least one.

6. a kind of heat-sealing limit device that is used for the microwave food packaging bag according to claim 1 is characterized in that the shape of set recess on the cope match-plate pattern baseplane is rectangular, the shape of trapezoidal or arc.