CN103158929A - Heating packaging bag and manufacturing method thereof - Google Patents

Abstract

The invention provides a heating packaging bag and a manufacturing method thereof, wherein the heating packaging bag comprises two outer films, a plurality of protrusions, a plurality of guide channels and a plurality of pre-breaking parts, wherein the two outer films comprise a plurality of inner surfaces, and a containing space is formed between the inner surfaces for containing articles; the plurality of protrusions are positioned on the plurality of inner faces and protrude out of the plurality of inner faces for supporting the surface of the article; a plurality of guide channels located between the plurality of protrusions of the plurality of inner surfaces, along which the gas in the housing space flows; the plurality of pre-breaking parts are positioned on the plurality of guide channels of the plurality of inner surfaces, gas in the containing space expands after being heated to press the two outer membranes, and the plurality of pre-breaking parts break to enable the gas to flow out of the containing space through the plurality of pre-breaking parts. The heating wrapping bag can effectively prevent that the heating wrapping bag from being destroyed by blasting messenger's packing when being heated to solve prior art wrapping bag and need cut the inconvenience that the opening or brokenly the hole operation caused before the heating.

Description

Heated packaging bag and manufacturing method thereof

technical field

The invention relates to the technical field of packaging bags, in particular to a heating packaging bag and a manufacturing method thereof.

Background technique

Modern people are busy with work, and their diet is more and more convenient, fast, and simple. Therefore, food preparation bags containing various vegetables, seafood, and meat are becoming more and more popular. Before eating, the food preparation bag will be thawed and cooked in the microwave oven, and it can be eaten in just a few minutes.

However, most of the food conditioning packs or other sealed food packages on the market are made of plastic films with low air permeability, so during the microwave heating process, the gas in the sealed package will be rapidly heated and pressurized. The air permeability of the plastic film itself is insufficient, and the critical tensile strength it can withstand cannot be supported, which will cause bursting and damage its packaging.

In order to solve the aforementioned problems, the user usually cuts an opening or pokes a hole in advance at one end of the bag package, so that the high temperature pressure generated during the microwave heating process can be discharged through the opening or the hole to avoid Its internal pressure suddenly increases and bursts.

Contents of the invention

In view of this, the purpose of the technical solution of the present invention is to provide a heating packaging bag and its manufacturing method, which can effectively prevent the heating packaging bag from being exploded and damage the packaging when it is heated, and solve the problem that the prior art packaging bag needs to be cut before heating. Inconvenience caused by cutting openings or perforating operations.

One aspect of the present invention provides a heating packaging bag, comprising:

Two outer films, including a plurality of inner surfaces, the two outer films are heat-sealed to form a storage space between the inner surfaces for storing an article;

a plurality of protrusions on at least one of the inner faces for supporting a surface of the article;

a plurality of guiding passages are located between the protrusions, and the gas in the receiving space flows along the guiding passages; and

A plurality of pre-ruptures are located on the guide channels. When the storage space is closed, the gas in the storage space expands after being heated and presses the two outer membranes. The pre-broken part flows out of the storage space.

Preferably, in the heating packaging bag mentioned above, one end of the two outer films is provided with a switch assembly for closing or opening the storage space.

Preferably, in the heating packaging bag mentioned above, the protrusion is integrally formed on at least one of the inner surfaces by connecting the two outer films by means of heat sealing.

Preferably, in the heating packaging bag mentioned above, the guiding channels are respectively arranged on at least one of the inner surfaces along a first direction and a second direction.

Preferably, in the heating packaging bag mentioned above, the two outer films are bonded by means of heat sealing to seal the storage space.

Another aspect of the present invention provides a method for manufacturing a heating packaging bag, comprising:

providing two outer membranes comprising a plurality of inner faces;

A plurality of protrusions are arranged on at least one of the inner surfaces, and a plurality of guiding passages are formed between the protrusions;

heat sealing the peripheral edges of the two outer films to form a receiving space between the inner surfaces; and

Shock at least one of the inner surfaces to form a plurality of pre-ruptures on the guide channels, wherein, after the storage space is closed, the gas in the storage space expands after heating and presses the two outer membranes, the The pre-ruptured parts are broken so that the gas flows out of the storage space through the pre-ruptured parts.

Preferably, after the step of providing the two outer films, the above-mentioned manufacturing method of the heating packaging bag further includes: providing a switch assembly for closing or opening the storage space.

Preferably, in the above-mentioned manufacturing method of the heating packaging bag, in the step of arranging the protrusions on at least one of the inner surfaces, the protrusions are integrally formed by joining the two outer films by means of heat sealing on at least one of the inner faces.

The present invention also provides another method for manufacturing a heating packaging bag, comprising:

providing two outer membranes comprising a plurality of inner faces;

shocking at least one of the inner surfaces to form a plurality of pre-ruptures;

The two outer films are heat-sealed to form a plurality of protrusions on at least one of the inner surfaces, and a plurality of guide channels are formed between the protrusions, wherein the pre-ruptured parts on the protrusions partially destroyed by heat and pressure; and

heat-sealing the peripheral edges of the two outer films to form a storage space between the inner surfaces, wherein, after the storage space is closed, the gas in the storage space expands after heating and presses the two outer films, the The pre-ruptured parts are broken so that the gas flows out of the storage space through the pre-ruptured parts.

Preferably, after the step of providing the two outer films, the above-mentioned manufacturing method of the heating packaging bag further includes: providing a switch assembly for closing or opening the storage space.

The heating packaging bag and its manufacturing method described in the specific embodiments of the present invention have the following beneficial effects:

In the present invention, a plurality of protrusions are provided on the inner surface of the packaging bag to support the articles, so as to prevent the articles from clinging to the outer film and affecting its heating effect. In addition, the present invention forms a plurality of guiding passages between the plurality of protrusions to guide the flow of gas, so that the objects can be heated evenly to improve the heating effect. Furthermore, in the present invention, multiple guide channels are provided with multiple pre-ruptured parts. When the gas expands after being heated and presses the two outer membranes, the multiple pre-ruptured parts rupture and the gas flows out of the storage space through the multiple pre-ruptured parts. , effectively prevent the blasting from destroying its packaging, and solve the inconvenience caused by cutting an opening or pre-poking a hole in the heating packaging bag in the prior art.

Description of drawings

Fig. 1 is the appearance schematic diagram of the first embodiment of the present invention;

Figure 2 is an enlarged schematic view of part A in Figure 1;

Fig. 3 is the sectional schematic diagram of B-B ' part among Fig. 1;

Fig. 4 is a schematic diagram of the appearance of the first embodiment of the present invention when in use;

Fig. 5 is a schematic side view sectional view of the first embodiment of the present invention when in use;

Fig. 6 is a schematic side sectional view of the first embodiment of the present invention after use.

Figure 7 is an enlarged schematic view of part C in Figure 6;

FIG. 8 is a schematic view of the appearance of the second embodiment of the present invention.

Symbol description of main components

1 heating bag

2 adventitia

2a inside

20 storage space

21 openings

24 switch components

4 protrusions

5 guide channels

6 pre-broken part

9 items

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are the heating packaging bag described in the first embodiment of the present invention.

The heating packaging bag 1 of the present invention includes: two outer films 2 , a plurality of protrusions 4 , a plurality of guiding channels 5 , and a plurality of pre-ruptured portions 6 .

Two outer films 2 are superimposed and heat-sealed to form a bag structure, wherein the two outer films 2 respectively have corresponding inner surfaces 2a, and a storage space 20 is formed between the facing inner surfaces 2a, It has an opening 21 at one end. Here, the two outer films 2 can be made of polyester, polyethylene-polypropylene copolymer, ethylene-styrene copolymer (ES), cyclic olefin copolymer (cycio olefin), terephthalate Diethyl formate (PET), polyvinyl alcohol (PVA), ethylene ethyl acetate (EVA), polyethylene terephthalate (PEN), polypropylene (PP), nylon (Nylon), ion high Molecular compounds (ionomer), biodegradable materials (biodegradable materials), polyether ketone (PEEK), polycarbonate (PC), nylon (Nylon), polyimide (PI), polyacrylonitrile (PAN), styrene Acrylonitrile copolymer (SAN), and polyurethane (PU), glassine paper (glassine paper), paper covered with polymer materials and other heat-sealable materials that can be melted, but it is only an example, not to This is the limit.

The plurality of protrusions 4 are provided on the plurality of inner surfaces 2a and protrude from the plurality of inner surfaces 2a. Here, the plurality of protrusions 4 are two pieces of outer film 2 connected by means of heat sealing, so that they are directly integrally formed on the plurality of inner surfaces 2a; however, the method of integrally forming the plurality of protrusions 4 on the plurality of inner surfaces 2a is only For example, it can also be an independent component, which is positioned on the inner surface 2a via adhesion or other fixing methods. Furthermore, the plurality of protrusions 4 can be completely arranged on the plurality of inner surfaces 2a, or can be arranged only on partial areas of the plurality of inner surfaces 2a according to actual structural requirements.

A plurality of guide passages 5 are located between the plurality of protrusions 4 of the plurality of inner surfaces 2a; here, the plurality of guide passages 5 are respectively arranged on the plurality of inner surfaces 2a in the first direction and the second direction, and the first directions intersect In the second direction, the included angle between the first direction and the second direction can be a right angle or an obtuse angle according to actual structural requirements. In addition, multiple guiding channels 5 can be arranged in the first direction and the second direction on the inner surface 2a of one of the adventitia 2 at the same time, and the multiple guiding channels 5 on the inner surface 2a of the other adventitia 2 are arranged in the same manner; Alternatively, a plurality of guiding channels 5 may be arranged in a first direction on the inner surface 2 a of one outer membrane 2 and in a second direction on the inner surface 2 a of the other outer membrane 2 . Furthermore, at least a part of the plurality of guide channels 5 can be arranged parallel to each other. However, the arrangement of the plurality of guiding channels 5 described above is only an example, and is not limited thereto. Depending on the implementation, the arrangement of the plurality of guiding channels 5 can be regular or irregular.

A plurality of pre-broken parts 6 are located on a plurality of guiding passages 5 of a plurality of inner surfaces 2a, wherein the thickness of the two outer membranes 2 is thinner than other places where the plurality of pre-broken parts 6 are arranged, so when the two outer membranes 2 When the pressure exceeds the critical tensile strength it can withstand, micro holes will be generated in the multiple pre-broken parts 6 .

In this embodiment, an electric shocker (such as an ultrasonic electric shocker) is used to shock the multiple guide channels 5 on the inner surface 2a, so that the inner surface 2a forms a concave-convex surface, that is, the place subjected to the ultrasonic electric shock is formed by a thinner concave portion. Pre-ruptured part 6; compared with pre-ruptured part 6, protruding part 4 is not subjected to electric shock and becomes thinner, so it is higher than pre-ruptured part 6, in other words, the thickness of adventitia 2 at protruding part 4 is thicker than pre-broken Adventitia 2 at portion 6 is thick. Furthermore, the inner surface 2a may be shocked with an electric shock device (such as an ultrasonic electric shock device), so that a plurality of thinner pre-broken parts 6 are formed on the inner surface 2a, and then the inner surface 2a is heat-pressed by a heat-sealing means to form a plurality of protrusions. 4, and form a plurality of guide channels 5 between the plurality of protrusions 4, wherein the pre-broken portion 6 located on the plurality of protrusions 4 is repaired and eliminated by heating and pressure, and only the guide channels 5 are left on the inner surface 2a. The pre-broken part6.

In addition to the above description, the forming method of the plurality of pre-broken parts 6 can also use cylindrical stretch bag or blown bag with concentric circular die extrusion injection method, stretch stretching machine (tenter) stretching, or extrusion Injection, etc., and can be stretched and stretched at a processing temperature lower than or close to the softening point of the material. However, the aforementioned method for forming the plurality of pre-broken portions 6 is only an example, and is not limited thereto.

Please refer to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in this embodiment, the article 9 is placed in the storage space 20 through the opening 21, and the surface of the article 9 is supported by a plurality of protrusions 4, so that the article 9 will not It is closely attached to the inner surface 2 a of the outer membrane 2 . Afterwards, the gas in the storage space 20 can be sucked by an aspirator or a vacuum pump, and the gas in the storage space 20 can flow along a plurality of guide channels 5 to be discharged from the storage space 20, and then the two holes located at the opening 21 can be connected by means of heat sealing. The outer film 2 seals the storage space 20 .

When the user wants to heat the item 9, he can directly use methods such as microwave oven, high-temperature steam, water boiling or infrared heating to heat and cook. In the initial stage of the heating process, the object 9 is in a relatively low-temperature environment, and the vapor pressure in the storage space 20 is relatively small. Most of the microwave energy is converted into heat energy by the molecules of the encapsulated object 9 through vibration and friction, and is supported by the plurality of protrusions 4 The surface of the article 9 will not be in close contact with the inner surface 2a, effectively heating the article 9 uniformly. Furthermore, during the heating process, the gas flow can be guided through a plurality of guiding channels 5, so that the objects 9 can be heated evenly and the heating effect can be improved. As the heating proceeds, the temperature and vapor pressure in the storage space 20 rise, the air pressure in the storage space 20 expands outwards and presses the two outer membranes 2, and the multiple pre-ruptured parts 6 are also deformed and enlarged, gradually become thinner or even ruptured, At this time, the broken pre-broken part 6 becomes gas-permeable, and acts as a safety pressure relief valve when the air pressure in the storage space 20 is too large, so as to prevent excessive heat vapor pressure in the general non-breathable airtight bag due to the heating process. Instant burst phenomenon.

Furthermore, the present invention arranges a plurality of pre-broken parts 6 on a plurality of guide passages 5, since the plurality of protrusions 4 support the articles 9 without contacting the plurality of guide passages 5, even if the two outer membranes 2 tightly wrap the articles At the same time, it will not hinder the guide channel 5 to guide the flow of gas, nor will it affect the effect of the rupture of the pre-ruptured part 6 .

Another aspect of the present invention provides a method for manufacturing a heating packaging bag, comprising:

Step 101: Provide two pieces of outer membrane 2, and the two pieces of outer membrane 2 include a plurality of inner surfaces 2a.

Step 102: Electrocute at least one inner surface 2a to form a plurality of pre-broken parts 6 .

Step 103: heat-sealing the two outer films 2 to form a plurality of protrusions 4 on at least one inner surface 2a, and forming a plurality of guiding channels 5.

Two outer films 2 are heat-sealed to form a plurality of protrusions 4 on at least one inner surface 2a, and a plurality of guide channels 5 are formed between the plurality of protrusions 4, wherein the plurality of protrusions 4 on the plurality of protrusions The pre-broken part 6 is destroyed by heat and pressure.

Step 104: heat-sealing the peripheral edges of the two outer films 2 to form a storage space 20 between the plurality of inner surfaces 2a.

A storage space 20 is formed between the facing inner surfaces 2 a and has an opening 21 at one end thereof. The user can put the article 9 into the storage space 20 through the opening 21 . Thereafter, the bag body structure is closed by closing the storage space 20 . The gas in the storage space 20 expands after being heated and presses the two outer membranes 2 , so that the plurality of pre-ruptured portions 6 are broken and the gas flows out of the storage space 20 through the plurality of pre-ruptured portions 6 . Regarding the manufacturing method of the heating packaging bag, other descriptions are the same as the foregoing content, and will not be repeated here.

Another manufacturing method of heating packaging bags differs from the aforementioned method in that: first heat seal two outer films 2 to form a plurality of protrusions 4 on at least one inner surface 2a, and form a plurality of guiding channels 5; Shocking at least one inner surface 2a forms a plurality of pre-broken portions 6 on the plurality of guide channels 5 . Other descriptions are the same as the foregoing content, and will not be repeated here.

Please refer to FIG. 8 , which is the heating packaging bag disclosed in the second embodiment of the present invention. The biggest difference between this embodiment and the first embodiment lies in the closed structure of the storage space 20 at the opening 21 . In this embodiment, the two outer membranes 2 are provided with a switch assembly 24 at the opening 21, such as a clip chain, a zipper or other chains that can be opened and closed by a pair of male and female clips, to close or open the storage space 20, In this way, it is convenient for the user to store or take out the article 9 .

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a heat packs pack, is characterized in that, comprises:

Two adventitias comprise a plurality of inner faces, and these two adventitias then form an accommodation space via heat-sealing between those inner faces, in order to take in article;

A plurality of teats are positioned at least one of those inner faces, in order to support the surface of these article;

A plurality of guiding channels, between those teats, the gas in this accommodation space flows along those guiding channels; And

A plurality of pre-broken sections are positioned on those guiding channels, and when this accommodation space is closed, the gas in this accommodation space expands after heating and oppresses this two adventitias, those in advance broken sections break and make gas flow out this accommodation space via those in advance broken sections.

2. heat packs pack as claimed in claim 1, is characterized in that, an end of these two adventitias is provided with a control group, in order to seal or to open this accommodation space.

3. heat packs as claimed in claim 1 pack is characterized in that, this teat then is shaped at least one of those inner faces with the heat-sealing means for these two adventitias.

4. heat packs as claimed in claim 1 pack is characterized in that, those guiding channels are arranged at least one of those inner faces with a first direction and a second direction respectively.

5. heat packs pack as claimed in claim 1, is characterized in that, these two adventitias are for then sealing this accommodation space via the heat-sealing means.

6. the manufacture method of heat packs pack comprises:

Two adventitias are provided, and these two adventitias comprise a plurality of inner faces;

A plurality of teats are set in those inner faces at least one, and form a plurality of guiding channels between those teats;

Heat-sealing is followed the periphery of these two adventitias and form an accommodation space between those inner face; And

Shock by electricity those inner faces at least one and form a plurality of pre-broken sections on those guiding channels, wherein, after sealing this accommodation space, the gas in this accommodation space expands after heating and oppresses this two adventitias, and those sections of breaking in advance break and make gas flow out this accommodation space via those in advance broken sections.

7. the manufacture method of heat packs pack as claimed in claim 6, is characterized in that, after the step that these two adventitias are provided, more comprises: provide a control group, in order to seal or to open this accommodation space.

8. the manufacture method of heat packs as claimed in claim 6 pack, it is characterized in that, in those teats being set in those inner faces in the step at least one, those teats then are shaped at least one of those inner faces with the heat-sealing means for these two adventitias.

9. the manufacture method of a heat packs pack, is characterized in that, comprises:

Two adventitias are provided, and these two adventitias comprise a plurality of inner faces;

Shock by electricity those inner faces at least one and form a plurality of pre-broken sections;

Heat-sealing is this two adventitias and at least one upward forms a plurality of teats in those inner faces then, and form a plurality of guiding channels between those teats, and wherein, those sections of breaking in advance that are positioned on those teats are subjected to hot pressing and eliminate; And

Heat-sealing is followed the periphery of these two adventitias and form an accommodation space between those inner face, wherein, after sealing this accommodation space, the gas in this accommodation space expands after heating and oppresses this two adventitias, and those sections of breaking in advance break and make gas flow out this accommodation space via those in advance broken sections.

10. the manufacture method of heat packs pack as claimed in claim 9, is characterized in that, after the step that these two adventitias are provided, more comprises: provide a control group, in order to seal or to open this accommodation space.

Images