CN101423134A

CN101423134A - Composite film for hermetic food heating automatic pressure-regulation packaging device and manufacture method thereof

Info

Publication number: CN101423134A
Application number: CNA2007101654883A
Authority: CN
Inventors: 林大卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-30
Filing date: 2007-10-30
Publication date: 2009-05-06
Anticipated expiration: 2027-10-30
Also published as: CN101423134B

Abstract

The invention discloses a compound film used for an air-tight food-heating automatic pressure-regulating packing apparatus and a corresponding manufacturing method. The compound film is formed by a base film which is provided with a plurality of microcosmic clearance structure zones and on which an adhesive layer of an adhesive tape is coated to form a plurality of microcosmic clearance structure zones. The invention is especially used for various food packing boxes and bags, and after being packed and sealed, the food can be directly frozen in a sealed manner; when the food is to be cooked, the adhesive tape can be torn for a repeated use or the package containing the frozen food is directly put into a micro-wave oven for heating and the compound film is provided with the function of automatically regulating the high temperature and high steam pressure so as to prevent the explosion of the package in the heating process.

Description

Composite film for hermetic food heating automatic pressure-regulation packaging device and manufacture method thereof

Technical field

The present invention relates to a kind of composite film for hermetic food heating automatic pressure-regulation packaging device and manufacture method thereof, mainly be for being used in various packaging for foodstuff box bodys or bag, sealed behind, the chilled food freezing at splendid attire, in microwave heating process the high temperature circulation steam that produces being made part regulates, guaranteeing the avoiding box body of packaged food or bag to break, and guarantee that the unlikely a large amount of losses of high-temperature steam are to keep the packing device complex film with automatic voltage regulation of food delicious food.

Background technology

Since ancient times, boiling mostly of food is roasting with fire, high temperature poach or the steaming mode of cooking a meal are carried out, and uses the microwave of high-energy source efficient to heat or the food that boils has surpassed the history in 50 years so far.Wherein, the country that industrialization degree is higher under convenient and requirement efficiently, uses micro-wave oven to boil also higher with the ratio of heated food to general family, school, dining room or other public place.

Microwave electromagnetic waves (Microwave) heated food principle, be utilize material-to-be-heated in each compositional polarity molecule because dipole moment intrinsic propesties itself that have, in the microwave electromagnetic waves vector field for orientation in the magnetoelectricity field, and fierce vibration or gyroscopic movement take place.Material-to-be-heated damping (Damping) by itself acts on the vibrational energy with dipole moment, changes into heat energy (heat) by the friction dissipation and makes the accumulation of total system self-energy and heat, and causes the system temperature rising; Generally speaking, dipole moment intensity relative dielectric constant (dielectric constant) value high more or material composition is high more, and the ratio that its conversion electromagnetic wave energy is a heat energy is high more, i.e. material intensification effect is good more also fast more with speed that be heated.The relative dielectric constant value of pure water is at room temperature near 80, and poly dielectric constant values at room temperature is 2.51, so food containing water is coated in the polyethylene packaging material and is heated after the match at microwave electromagnetic simultaneously, most in theory microwave electromagnetic can be converted into heat energy by the water composition, in other words, be heated intrasystem heat temperature raising based on food, and packing are low because of the thermal cross over ratio on the contrary, and itself material heats up less.And, microwave has general electromagnetic through characteristic, penetrable to material any one corner and evenly heat this thing, energy of vibration and damping (Damping) dissipated change into the heat energy principle and make and heat in the system, molecule damping thermal conversion efficiency is high more, and to heat effect good more, and article heat up and are subjected to thermal effect also good more.On industrial and the consumer market normal applied microwave equipment to article heat, dry, boil, processing such as baking and sterilization, heating microwave commonly used is that frequency is the electromagnetic wave of 915 MHz (MHz) and 2450 MHz (MHz); Temperature and microwave frequency when in addition, the relative dielectric constant value of food material is with microwave heating are all relevant.

Moisture run off fast and become dry hard for food use microwave to heat and the process that boils in the two large problems that often faces, owing to have high-k and high volatile ingredients (as water) in the food, has the high dielectric constant materials composition under microwave field, the microwave electromagnetic wave energy can be converted into heat energy by rubbing effect, this intensification makes the material composition with high volatilization and high-vapor-pressure characteristic, easily be heated and quick outer the passing of volatilization and to make that food becomes dry hard, lose delicious food.

On the microwave heating application market, more common in the market micro-wave oven uses packing that preservative film (wrap film), the special-purpose bag of micro-wave oven and dish tool etc. are arranged; The packing composition original material of its use includes polyethylene (PE), polypropylene (PP), polyamide (polyamide, nylon), polycarbonate (PC), polyvinylchloride (PVC), polyvinylidene chloride (PVDC), polymethylpentene (PMP), ethylene-ethyl acetate (ethylene-vinyl acetate, EVA), Polyurethane polyurethane, PU or SurlynTM (trade name of Dupont ionomer ionic high molecular cpd), poly terephthalic acid diethylester (polyethylene terephthalate, PET), polyvinyl alcohol (polyvinyl alcohol, PVA), paper, synthetic paper, glass paper (cellophane), paraffin paper, pottery (ceramic), the combination of materials such as glass or above-mentioned material, on material structure, can be the single structure layer, the composite multi-layer structure, foaming structure etc.

In the actual production, packing business is the manufacturing of this based packaging material for convenience, can add some plasticizers (plasticizer additives) in the packaging product processing procedure; Therefore, the additive on the packaging material for food can be in packaging for foodstuff, store, transport or the micro-wave oven heating is boiled in the process, with the food direct contact, thereby causes food pollution and harms healthy phenomenon.

In view of this, relevant with the various countries hygiene and health Bur St of U.S. food with administration of health office (FDA), more and more harsh for the requirement of packaging material for food with restriction.Except require food must not packaged material contamination, also increased cracking standard under heatproof characteristic that packing at high temperature use and low, the hot environment.

In recent years, because knowledge and the consuming capacity of ordinary consumer promote greatly, make things convenient for and the also relative raising of acceptance of characteristic such as rapid for micro-wave oven high-energy source service efficiency, the heating of cooking.How to make food in the conditioning process, nutrition is not run off and original flavor keeps, and in conjunction with microwave heating and steam cooking cooked food, makes in the application of boiling of IQF organic vegetable and fresh chilled vegetables, can fully keep various vitamin compositions, luxuriantly become a kind of requirement of fashion.

In addition, normal when sealed packed food utilizes microwave heating because of rapid temperature-raising in the seal cavity and superheated steam supercharging phenomenon, and cause the packaging bag gas explosion.For avoiding the gas explosion phenomenon, the normal food packing provides manufacturer all to advise, use the micro-wave oven heating or the food that boils before, must on packaging bag or dish tool, reserve an opening, make the heating high temperature and high pressure gas that is produced in the process that boils be able to pressure release, avoid explosion phenomenon.But U.S. Ziploc company by appointing on the bag, all instructs the user must be by times bag opening a breather hole to avoid explosion phenomenon and accident before micro-wave oven uses in the packaging for foodstuff of the microwave freezing special use of its production.This application mode makes the food of microwave heating be in an open space, and volatile component because of a large amount of loss of being heated, causes food to become dry hard and loses delicious food in heat process in the food; And this reservation opening packing makes easily that oxygen contacts in a large number with food in the air, and microorganism fungus kind is grown, and small insect is also invaded, and the food fresh keeping phase is difficult for prolonging.

Aforesaid traditional food packaging bag, no matter sealed type maybe can be sealed off being packed by a bag of formula fully, food is in an airtight package space, if place the micro-wave oven heating, along with the time carries out, airtight food heat and the supercharging of elevated temperature heat steam the critical tension intensity that bag internal pressure be can bear to packing greatly, and destroy packing in the blast mode, a large amount of loss of aqueous vapor and make food-dewatering and not delicious simultaneously.

And when desire heating prepared food flours relevant food, as steamed stuffed bun, boiled dumpling, pasta (spaghetti) etc., general using method comprises and utilizes micro-wave oven to heat after utilizing steam oven (steam cooker) or food to coat preservative film.Though the former can get the result of cuisines, flour foods has expansion or sticks with paste the trouble of falling when absorbing washiness; Though can save time and the latter coats preservative film, but food is subjected to microwave heating, its in-to-in aqueous vapor can outbound flow fast, because preservative film is also waterproof, add the low-k material behavior of itself, at microwave heating process, the food material that the thermal conversion rate of its microwave energy has high-dielectric coefficient is low, the preservative film self-temperature can be lower, so the aqueous vapor of these losses can be condensate in the interface that food contacts with preservative film, the part that causes food to be covered by preservative film has the phenomenon of falling of paste, and the part that is not capped has the hard phenomenon that becomes dry, and makes food become not delicious so again.

For preventing that packaging material for food is in microwave heating is used, because of the airtight package heat temperature raising gas problem of blasting that rises, continuing to carry out research and development in the industry always, there are many different types of breathinies material successively to be developed, but concentrate on waste water filtering, air purification filter, the saturating moisture absorption of paper nappy, hygenic towelette, ventilative medical supplies etc. mostly, all be not suitable for packaging for foodstuff microwave heating and use.One of manufacture method of these known breathinies material, as US Patent number 3,378,507,3,310,505,3,607,793,3,812,224,4,247,498,4,466,931 and 5,928, the technology that 582 cases are disclosed, comprise utilize incompatible material filming after, re-use extracting process with wherein a certain composition stripping, and forming hole shape structure, this breathing material is applied in filtration and separates (filtration andseparation) mostly, the isolation dialysis membrane of using as the barrier film (separator) that allows the electrolyte circulation in the battery and purification of water or sea water desalination (dialytic film), because the mechanical strength and the porosity of material layer have inverse relation, this material is applied in microwave food packaging and uses, and still the process in microwave heating has explosion phenomenon to take place, and remaining when extract is not too much, the high dielectric constant value that easily has at microwave heating process because of itself, form heat centrostigma (heat spot) and make the molten pore-forming of wearing of packing local heating and change into heat energy (heat) process at microwave energy, volatilization composition in the food thereby a large amount of the loss, this material is not suitable for use in the microwave food packaging material, and manufacturing cost is high, extracting solvent reclaimer complexity.Another kind of breathing material, as US Patent number 5,865, the technology that 926 cases are disclosed, then utilize adhesive-bonded fabric or fiber cloth with ventilative character, yet these methods all can make breathable film have huge hole (macro porous) characteristic, are applied in aspects such as paper nappy and hygenic towelette mostly, are not suitable for use in microwave food packaging and manufacturing cost is high.

The manufacture method that also has a kind of known breathing material is as US Patent number 3,679,540,4,187390,4,350,655,4,466,931,4,777,073 and 5,340, the technology that 646 cases are disclosed, by with the inorganic material powder, calcium carbonate (CaCO for example ₃), titanium oxide (TiO ₂) or aluminium oxide (Al ₂O ₃), evenly blending in high-molecular organic material, as polyethylene, film extrusion then.Its film build method comprises utilizing to have concentric circles die orifice (die) extruding injection method and make cylinder and draw bag or blow bag, extend that tension machine (tenter) stretches or modes such as extruding ejaculation; Then, be lower than or processing temperature near material softening point under do film stretching and extend and handle, though this manufacture method can produce micropore hole (microporous), but manufacturing cost is too high and difficulty is big, this series products is also impracticable at present, and the phenomenon of blasting in microwave heating process is still arranged; Same, the inorganic salts additive that adds in it belongs to the material of a kind of low specific heat and high dielectric constant mostly, is subjected to focus (heat spot) what be subjected to easily to form under the thermal environment part, and the problem of these packing of burn through is arranged.More noticeable, this manufacture method can cause the quality of Breathable films wayward, for example extensibility, processing temperature, film thickness and formula for raw stock etc. all can cause hole size inconsistent, and the use of additive differs for the influence of subsequent environments, for example may cause environmental issue.In addition, be subject to the membraneous material selectivity, and often do not possess the transparency after normal heterogeneous combination (multiple phases) because of additive makes film forming on making, and the step that need stretch.In addition, when this breathing material is used in the packaging for foodstuff, there is additive to pollute the problem of packaged food, causes offending peculiar smell (unpleasant odors).When this class Breathable films contact contains oil or alcohol food, can not stop oil and alcohol effectively, therefore can be soaked with oil and alcoholic content because of the capillary adsorption causes to contain, its further influence can cause oxygen scavenger components to be coated and stain and can't reach the fresh function of maintenance food when this ventilated membrane is applied in food Package and inside when containing deoxidizer parcel (pouch) by oil and alcohol.

Normal food is in a kind of thermal process that is subjected in the heating or the process that boils, when using the micro-wave oven direct heating, high dielectric constant composition such as the water of microwave heating by containing in the food, the damping force characteristics (damping property) that the energy actv. has by moving effect of microwave resonance and material itself, microwave energy is converted to heat energy with the heating or the food itself that boils, microwave heating process causes water temperature rising and steam inside pressure to heighten like this, owing to itself contain low than thermal property composition, when this gas film is used sheathing foodstuff, material is in microwave heating process, concentrate to be heated to produce in the short time easily and be subjected to focus (heating spot), be split into bigger hole and melt, cause the gas-liquid in the packing material to leak; In addition, in filled with product and high temperature sterilization disinfecting process, this Breathable films is stripped from easily and is come.

Therefore, industry continues tradition is easily taken place the packaging for foodstuff bag or the box body of explosion and researches and develops and produce, release multiple packaging for foodstuff box body or bag with permeability to air, adapt to the packing freezing, when chilled food is done microwave heating, do not need to open separately the demand of rete; Yet the effective Keeping life of food of this packaging for foodstuff box body with permeability to air or bag is shorter, can't carry out vacuum packaging usually or by filling carbon dioxide (carbon dioxide, CO ₂), nitrogen (N ₂) (modified atmosphere packaging MAP) prolongs the food fresh keeping time limit to wait the change pack environment of unreactable gas; Even, at the long-term frozen lay up period, easily, food water causes albefaction frostbite phenomenon (iceburn) because of volatilizing to become dry gradually.

In addition, use to food always the inventor pack bag or box body improves by microwave heating, wherein, the associated core technology is disclosed in Taiwan patent of invention the 153042nd, 172945,182938, No. 201962, U.S.'s patent of invention the 7077923rd and No. 7208215, Japan's patent of invention waits for No. 3747004 in the document, this permeability to air composite film material packaging bag that microwave heating is used as food can improve the shortcoming of known breathing material and the characteristic of providing convenience and manipulating, simultaneously more can guarantee in the microwave heating process, food include moisture by the juice that keeps in a large number and contain can splash in micro-wave oven, reduce scavenging period and water resource waste cost.Prior, the ventilative automatically voltage regulation function packing of this invertibility are in closed structure before microwave heating; The elevated temperature heat steam pressure that but automatically regulating packing itself can carry in heat process is avoided the packing explosion; After heating finished, material can revert to closed structure.This invertibility behavior of structure relevant with pressure and temp makes that this material is reusable, and this need open food pack with the Traditional Packing material or sever the microwave heating occupation mode of an opening very different in advance.

Summary of the invention

The packaging for foodstuff box body or the bag that the present invention is directed to microwave current heating use further improve, in the hope of Packaging box body or the bag that is applied to various food, provide a kind of under normal temperature and cryogenic freezing or refrigerant temperature environment, the airtight barrier design that has better isolation with the external world is used.

Composite film for hermetic food heating automatic pressure-regulation packaging device of the present invention comprises at least:

Has a base material rete that utilizes a plurality of microcosmic interstitial structures zone that a spreading processing procedure produced;

And the Sealing adhesive tape of the microcosmic interstitial structure zone wide cut that had of covering substrates rete, coating one adhesion layer on the one sidepiece subregion area of the structural involution rete of this Sealing adhesive tape, the corresponding applying of this adhesion layer is covered in the microcosmic interstitial structure region list aspect of base material rete.

Complex film of the present invention can be used in various packaging for foodstuff box bodys or bag especially, at splendid attire with airtight involution behind freezing, the chilled food and in addition; This packing device is in usual storage and transport process, can the airtight package mode directly freezing or refrigeration, can directly take out when edible from reefer, the directly cooking or for making things convenient for this Sealing adhesive tape of repeated usage, can remove the Sealing adhesive tape of fitting and covering in the automatic ventilative pressure regulation district earlier, nurse one's health this food and eat it with type of heating such as microwave, boiling water, food steamers.This is different from traditional airtight packaging for foodstuff, and before heating and regulating, as before carrying out the micro-wave oven heating, must unpack in advance dish or sack container or puncture are to avoid adding the airtight gas explosion phenomenon of pining for; The present invention saves time for having, makes things convenient for, repeated usage and energy savings require freezing, chilled food merchant provide a revolutionary packing notion.

The manufacture method of composite film for hermetic food heating automatic pressure-regulation packaging device of the present invention comprises:

Utilize a spreading processing procedure to produce base material rete with a plurality of microcosmic interstitial structures zone;

Adhesion layer evenly is coated on involution rete one side surface of Sealing adhesive tape, the wide cut of adhesion layer is greater than the wide cut in the microcosmic interstitial structure zone of base material rete;

The involution rete of described Sealing adhesive tape conforms to the base material rete by its adhesion layer and forms a composite film for hermetic food heating automatic pressure-regulation packaging device.

The invention belongs to extension invention and the technology of applicant on original core patent of invention technical foundation and use, this core technology has successively obtained Taiwan patent of invention, No. the 482722nd, 522123 and 542812, notification number in recently; U.S.'s patent of invention, the 7077923rd and No. 7208215; Japan's patent of invention, No. 3747004 etc.To how preparing on automatic pressure regulation packing device of the present invention and the processing procedure, integrate application with following various technology, drench the mechanical, electrical dizzy surface treating machine of film (corona treatment machine), coating machine platform (coating machine), Sealing adhesive tape applying etc. as special microcosmic interstitial structure processing, plastics.

Wherein, special microcosmic interstitial structure spreading wheels are used for preparing critical component invertibility adjustment pressure base material rete in the automatic pressure-regulation packaging device of the present invention; In processing procedure, form a plurality of microcosmic gaps (gap) structure by this base material rete of spreading and on the base material rete; In addition, for regulating high-temperature steam degree of pressure demand, can control by the factors such as number, shape, distribution density, distributing position, base material film layer thickness and base material film layer material in gap on this base material rete in design; In the spreading processing procedure required Fabricating machinery can adopt continous way to press nips or batch to flattening platform prescription formula, under the automation demand, especially has better economic benefit with the former, wherein one in the platform group taken turns or a flat-bed surface has the prominent shape structure of a plurality of points to press nips or to flattening, and the prominent shape structure of this point can make by following method: the protruding metal filament wheel of (1) high hardness point (wire brush) or break bar seat (blade set); (2) evenly plating from the teeth outwards by the similar particle powder of electro-plating method polyhedron diamond grains powder or high hardness; (3) hard is organic with laser erosion cutting mode, metal or stupalith engraving (engraving) form the spreading face with the prominent shape structure of a plurality of points, for example the ceramic anilox roll wheel that forms of laser cutting; (4) utilize mechanically rolling type (tooling) processing mode, with the metal surface die mould of a demand hardness or be processed into required surface, handle (hardening treatment) methods by case hardening such as high temperature tempering, ultrasonics more subsequently and get required at last spreading face with a plurality of sharp male structure; (5) metal surface is carried out carry out case hardening again and be processed into hard spreading face after chemical electrolysis is etched into even sharp male structure.In addition, corresponding with roll milling wheel to the pinch roller or the materials such as metal, plastic-steel or pottery that can have suitable hardness to the pressure surface material.Electroplated diamond wheel, the laser carved roll milling wheel of mechanical die mould (tooling) processing wheel or surface of no matter using as described above, make to have a plurality of microcosmic gap (micro gaps) structure or microcosmic interstitial structure zone on the structure by the spreading procedure for processing, this microcosmic interstitial structure region shape can different shape the gap, have air-permeable structure in essence and form.Can make this be had required involution and airing function characteristic and structure design on spreading film (stabbed film) according to actual demand herein; Wherein can be by selecting suitable material, cooperating different roll milling wheel, spreading mechanisms to have different conditions to get a best of breed with the demand of actual application environment, also can have different distribution design to microcosmic interstitial structure of the present invention zone because of actual demand, for example can be comprehensive distribution, regional area distribution, systematicness distribution or irregularity distributes, actual using time and application device, then decide, form very rubber-like application design on factors such as processed base material film layer material, processing conditions.

In addition, the protrusion in the prominent spreading mechanism of the selected point of the present invention can be tapered for line segment type, pyramid type, pyramid, four directions, polyhedral angle taper, cross column type or other form; After the spreading procedure for processing, in spreading processing back to general High molecular material because the visoelasticity (viscoelasticity) and the memory effect that itself have, on the macro-structure of base material film, macro-structure in outward appearance recovers the plane with major part, only stays the microcosmic interstitial structure of permanent damage distortion on material structure; At this moment, there are the press polish wheels of temperature regulating control to process by one, make this base material leveling revert back to the false plane (pseudo plan) that outward appearance has most microcosmic interstitial structures, can have on this false plane also on most microcosmic interstitial structures zone after the pressing that corresponding line segment type, pyramid type, pyramid, four directions are tapered, polyhedral angle taper, cross column type gap shape or corresponding slight crack of other form or clearance type shape, but the temperature control superpressure halo group that above-mentioned combination process is used, can make this easy-to-rupture base material outward appearance more smooth, thickness evenly reaches attractive in appearance.

First purpose of the present invention, be to provide a kind of composite film for hermetic food heating automatic pressure-regulation packaging device, it comprises a base material rete, on base material film layer segment area, have a plurality of microcosmic interstitial structures, the microcosmic interstitial structure can be various geometric configuratioies, then between 0.1 micron to 10 millimeters, each microcosmic interstitial structure neighboring edge then belongs to physics closed contact (physically contact to each other) to the average-size size of microcosmic interstitial structure; In addition, have a plurality of microcosmic interstitial structures zone and make it become an air tight structure for covering by the adhesion layer on the involution rete subregion area on the Sealing adhesive tape, this Sealing adhesive tape is made up of an involution rete and an adhesion layer on the structure, along having an adhesion layer on the involution rete part area on the side of Sealing adhesive tape direction and being strip viscose interval on parallel this Sealing adhesive tape direction, be no adhesive paste part subregion on remaining other area, the strip viscose interval on this Sealing adhesive tape has on a plurality of microcosmic interstitial structure base material rete distribution areas in order to paste to cover; A plurality of microcosmic interstitial structures on this base material rete, main effect are to provide the automatically ventilative voltage regulation function in the microwave heating process.This Sealing adhesive tape and base material rete in conjunction with after make into an air hermetic structure of composite membrane, this closed structure can provide the storage facility of an airtight preservation food, this structure can prevent that food directly is exposed under the atmosphere, can avoid frozen food long-term because of being in the open storage area of a drying, the moisture content that causes is volatile and cause albefaction frostbite phenomenon (ice burn), this structure function need not be torn the packing direct heating except food can be provided before microwave boils heating and regulating, and do not have the worry of explosion, simultaneously also can the food and extend freshness date.

For making things convenient for this Sealing adhesive tape of repeated usage, before this is packaged in food microwave heating, can be earlier Sealing adhesive tape not be torn from composite film for hermetic food heating automatic pressure-regulation packaging device and moves from there being zone, viscose marginal portion, make this have a plurality of microcosmic interstitial structure region substrates films, in microwave heating process, be able in the automatically regulating food heated by microwave process High Temperature High Pressure vapours that is produced and do not have the problem of explosion.

Second purpose of the present invention, be to provide a kind of packaging for foodstuff be airtight in the storage and transport process at ordinary times, this food produces the High Temperature High Pressure vapours in heat process, can be in good time by having a plurality of microcosmic interstitial structure adjustable pressures zone (pressure regulating area) on this complex film, regulate high temperature and high pressure steam to external atmospheric pressure, keep the zone of splendid attire food under High Temperature High Pressure Rapid Cycle steam, continuous and effective to heat simultaneously, to overcome traditional airtight package box body or bag, the problem that in microwave heating process, must break; This leakproofness structure function contains the packaging applications of the based food of liquid except can be provided in the general storage and transport process, and vacuum-packed an application more can be provided, or by filling carbon dioxide (carbon dioxide, CO ₂), nitrogen (N ₂) wait unreactable gas the change pack environment (modifiedatmosphere packaging, MAP) processing procedure is to prolong the application in food fresh keeping time limit; This application is except providing brand-new packing notion freezing, chilled food, and all can carry out sealed package by packing of the present invention at any fresh or delicatessen, simultaneously can have long-time fresh-keeping packaging, and when edible conditioning, can take out from reach in freezer and directly place any heating arrangement to boil and nurse one's health, in fact can not need course of defrosting, can heating with full power and with the short period, economize the energy, save money, do not stain kitchen and easy cleaning mode, provide that a nutrition is not run off, delicious and hot z z z cuisines.

The 3rd purpose of the present invention is to propose a kind of used for packing foods breathing material, and this microwave food extra package material can overcome the inconvenience and the restriction of existing microwave packaging material; Very flexible on the compound design of material, can use feature of environmental protection material fully, material is behind smokeless combustion, only generate water and carbon dioxide, the problem that does not have pollution nuisance, food is not polluted by exotic, except avoiding this extra package material in the microwave heating or the process that boils, to pollute in a large number with Food Contact, can avoid simultaneously the gas explosion phenomenon that causes with supercharging because of heating, manufacture method of the present invention and packing have very broad temperature range of use, can be according to food characteristic and customer demand, with regard to packaging product heatproof demand, specification such as size and shape is done an optimized material and a specifications design.

The 4th purpose of the present invention, encircleing a kind of Breathable films that is applied on packaging bag or the dish tool to carrying, comprise array structure down: utilize the spreading processing procedure to produce a plurality of microcosmic interstitial structures zone the part area of base material rete, and covering by adhesion layer applying on the Sealing adhesive tape on the microcosmic interstitial structure zone, make it to become one and have the closed structure that blocks gas, food is heated and produces high-temperature steam and increased pressure in packaging bag or dish tool, and this moment, elevated temperature heat steam impelled next-door neighbour's adhesion layer decrescence and gradually to be broken away from because of being subjected to thermal softening and binding force by solid; In addition, base material film is subjected to High Temperature High Pressure to produce the extrusion extensional, make microcosmic interstitial structure open space become big, most microcosmic interstitial structure location of this moment, also become the less safety relief control band of a resistance gradually, slowly hot air and the high pressure steam (hot air and pressurized steam buildup) of accumulation cause instantaneous explosion danger phenomenon in bag because of being subjected to thermal process to avoid this encapsulation doggie bag.

The 5th purpose of the present invention, be to provide a kind of hot permeability encapsulation bag that has, the food of packing in this closing bag can directly cover involution with Sealing adhesive tape after boiling, and sealed up for safekeeping this delicatessen freezing or refrigeration, be equipped with for use backward, as long as put into heating arrangement when edible again,, be that peelable this encapsulation bag film directly uses this food after the short time heating as directly heating again of micro-wave oven.

Description of drawings

Fig. 1 is that packing box among the present invention is at the scheme drawing of involution form not;

Fig. 2 is that packing box among the present invention is at the block diagram of finishing the involution form;

Fig. 3 is A-A sectional detail drawing of Fig. 2;

Fig. 4 is the enforcement scheme drawing of the packing box form when heating among the present invention;

Fig. 5 is the scheme drawing of another microcosmic interstitial structure zone example on the base material rete of the packing box among the present invention;

Fig. 6 is the block diagram of two forms of the packaging bag among the present invention;

Fig. 7 is the scheme drawing of another microcosmic interstitial structure zone example on the bag of the packaging bag among the present invention;

Fig. 8 is the block diagram of three forms of the packaging bag among the present invention;

Fig. 9 is the scheme drawing that implement in another microcosmic interstitial structure zone on the packaging bag bag shown in Figure 8;

Figure 10 is the enforcement scheme drawing of packaging bag shown in Figure 8 form when heating.

The specific embodiment

As shown in Figure 1, composite film for hermetic food heating automatic pressure-regulation packaging device of the present invention, open end at the packing box 1 of various freezing, the chilled foods of packing, cover sir-tight base material rete 2 by hot pressing, this base material rete 2 can process the microcosmic interstitial structure zone 21 of preset range and size by the spreading processing procedure before covering applying; In the present embodiment, microcosmic interstitial structure zone can be arranged by any direction, and this in addition microcosmic interstitial structure zone that is applied on the packing box also can be as shown in Figure 5, and the line segment of being arranged to the equidirectional arrangement in discontinuous interval declines and sees interstitial structure zone 21 ' form.Determine Sealing adhesive tape 9 according to the microcosmic interstitial structure of base material rete 2 zone 21 wide cuts, Sealing adhesive tape 9 is covered on the microcosmic interstitial structure zone 21 greater than this scope; Sealing adhesive tape 9 have an involution rete 3, and on the involution rete 3 one side deck sections subregion areas (in the present embodiment, with corresponding microcosmic interstitial structure zone) one deck adhesive coating 4 of having, as shown in Figure 3, adhesive coating 4 correspondences of these involution rete 3 one sides to fit and are covered in base material rete 2 its microcosmic interstitial structure zone 21 top layer faces, as shown in Figure 2; Whereby, the open end of packing box 1 is with base material rete 2 and involution rete 3 airtight covering.

As shown in Figure 4, this with the base material rete 2 airtight packing boxes that cover 1, its in-to-in is freezing, chilled food is when carrying out microwave heating, food produces high temperature because of being heated, high-voltage steam, can see through the microcosmic interstitial structure zone 21 of base material rete 2, make adhesive coating adjacent on the Sealing adhesive tape 94 simultaneously, beginning reduces bond strength with softening the reaching of viscose glue gradually gradually because of the infiltration that is subjected to thermal contact steam 5, make Sealing adhesive tape 9 adhesive coatings 4 begin to break away from base material rete 2 (the tearing layer 4 ' that an adhesive-free area must be arranged between adhesive coating 4 one sides at this involution rete 3) from involution rete 3 both sides, the overheated hyperthermia steam 5 of packing box 1 in-to-in will follow the microcosmic interstitial structure zone 21 that not covered by involution rete 3 and leak; Whereby, the high temperature and high pressure steam that is heated and produces can complied with the ventilation area to be done suitably to regulate, avoided packing box 1 that the explosion situation takes place, kept the 5 unlikely a large amount of losses of packing box 1 in-to-in high-temperature steam simultaneously, guaranteed that the unlikely exsiccation of the food that heats is firmly to keep its delicious food.

As Fig. 6, shown in Figure 8, composite film for hermetic food heating automatic pressure-regulation packaging device of the present invention also can be applicable in the packaging bag 6,6 ' of another form, these two kinds of packaging bags 6,6 ' all are complex film bag 61 high temperature resistant, that have the air hermetic automatic pressure-regulation packaging device, establish with zip mode involution limit 62 at these bag 61 open ends, make bag after the food of the precooling of packing into, refrigeration, can make things convenient for airtight involution.To the packaging bag 6,6 ' of this form, but design on the airtight base material rete of bag 61 either side aspects, before moulding, process the microcosmic interstitial structure zone 63 of preset range and size by the spreading processing procedure with the rete of tool pressure regulation form; Implement with any direction arrangement mode in microcosmic interstitial structure zone herein, also can decline as the line segment that Fig. 7, Fig. 9 are arranged to the equidirectional arrangement in discontinuous interval to this microcosmic interstitial structure zone that is applied in the packaging bag in addition and see interstitial structure zone 63 ' form; Determine Sealing adhesive tape 9 according to the microcosmic interstitial structure of bag 61 zone 63 wide cuts greater than this scope, Sealing adhesive tape 9 is covered on the microcosmic interstitial structure zone 63, Sealing adhesive tape 9 have an involution rete 7, and on the involution rete 7 one side deck sections subregion areas (implementing with corresponding microcosmic interstitial structure domain mode) at this have an adhesive coating 8 and must remain with the tearing layer 8 ' of one section adhesive-free area at its two side periphery, adhesive coating 8 correspondences of these involution rete 7 one sides the regional 63 top layer faces of microcosmic interstitial structure of fitting and being covered in bag 61; Whereby, finish the automatic voltage regulation complex film that packaging bag 6,6 ' form either side are provided with involution rete 7.

As shown in figure 10, freezing to packaging bag 6 ' (implementing) in-to-in in this isolated packing bag mode with Fig. 8, when chilled food carries out microwave heating, be heated and the high temperature that produces at food, hot high pressure steam 5, promptly can see through the microcosmic interstitial structure zone 63 of bag 61, make adhesive coating adjacent on the Sealing adhesive tape 98 gradually softening the reaching of viscose glue be reduced its bond strength gradually simultaneously because of touching heated vapor infiltration contact, therefore Sealing adhesive tape 9 adhesive coatings 8 begin to break away from bag 61 from the both sides of

involution rete

7,63 places, microcosmic interstitial structure zone that this packaging bag 6 ' in-to-in superheated steam 5 can followed be not subjected to involution rete 7 to cover regulate extrusion outwardly, the high temperature and high pressure steam of association of in good time will being heated is made automatically regulating in the ventilation area, avoided packaging bag 6 ' that explosion takes place, guarantee the unlikely a large amount of losses of packaging bag 6 ' in-to-in high-temperature steam simultaneously, keep the food delicious food that heated.

Be applied in the base material rete 2 of above-mentioned packing box 1 open end, or another form packaging bag 6,6 ' bag 61 retes are by at least a following material, acryl (acrylic), polyesters (polyester), polyethylene (polyethylene, PE), polypropylene (polypropylene, PP), polyamide (polyamide), ethylene styrene co-polymer (ethylene-styrene copolymer, ES), ring-type alkene co-polymer (cyclo olefin), poly terephthalic acid diethylester (polyethyleneterephthalate, PET), polyvinyl alcohol (polyvinyl alcohol, PVA), ethylene-ethyl acetate (ethylene-vinyl acetate, EVA), ethylene-vinyl alcohol co-polymer (ethylene vinylalcohol, EVOH), ionic high molecular cpd, carbowax is to naphthalate (polyethylenenaphthalate, PEN), poly ether-ketone (PEK) (poly ether ether ketone, PEEK), polycarbonate (polycarbonate, PC), polysulfones (polysulfone), pi (polyimide, PI), polypropylene cyanogen (polyacrylonitrile, PAN), styrene-acrylonitrile copolymer cyanogen co-polymer (styreneacrylonitrile, SAN), Polyurethane (polyurethane, PU), nylon (nylon), paraffin paper, the Polymer multilayer is the extrusion stretched PTFE film altogether, synthetic paper (synthetic paper), the paper that glass paper (glassinepaper) or High molecular material cover, materials such as paper wood, or form by above combination of materials.

Cover and be applied in above-mentioned packing box 1 open end base material rete 2 or another form packaging bag 6, the microcosmic interstitial structure zone 21 of 6

' bag

61,21 ', 63,63

' involution rete

3,7, by at least a following material, olefin polymer (polyolefin), polyethylene (PE), polypropylene (PP), polyester film (polyesterfilm), poly terephthalic acid diethylester (polyethylene terephthalate, PET), polystyrene, polyvinylchloride, carbowax is to naphthalate (polyethylene naphthalate, PEN), poly ether-ketone (PEK) (poly ether ether ketone, PEEK), polycarbonate (polycarbonate, PC), pi (polyimide, PI), polysulfones (polysulfone), polypropylene cyanogen (polyacrylonitrile, PAN), acryl (acrylic), polyethylene polypropylene co-polymer, ethylene styrene co-polymer (ethylene-styrene copolymer, ES), ring-type alkene co-polymer (cyclo olefin), polyvinyl alcohol (polyvinyl alcohol, PVA), ethylene-ethyl acetate (ethylene-vinyl acetate, EVA), ethylene-vinyl alcohol co-polymer (ethylene vinylalcohol, EVOH), styrene-acrylonitrile copolymer cyanogen co-polymer (styrene acrylonitrile, SAN), Polyurethane (polyurethane, PU), nylon (nylon), polyamide (polyamide), the ethylene styrene co-polymer (ethylene-styrene copolymer, ES), ionic high molecular cpd, synthetic paper, paraffin paper, the polyethylene adhesive-bonded fabric, the polypropylene adhesive-bonded fabric, inorganic matter adds plastic film, multilayer is the extrusion stretched PTFE film altogether, combinations of materials such as multilayer complex films form.

Described

involution rete

3,7 also can be made up of the complex film of plastic film applying or evaporation one metal level, and this metal level is an aluminum or aluminum alloy.

Application is fitted in above-mentioned packing box 1 open end base material rete 2 or another form packaging bag 6, the involution rete one side aspect of 6 ' bag 61 is the adhesive coating material of coating evenly, can be by acrylic poly-mer (polyacrylics), polyesters (polyester), olefin polymer (polyolefin), polyethylene (PE), polypropylene (PP), ring-type alkene co-polymer (cyclo olefin), polyvinyl alcohol (polyvinyl alcohol, PVA), ethylene-ethyl acetate (ethylene-vinyl acetate, EVA), ethylene-vinyl alcohol co-polymer (ethylene vinyl alcohol, EVOH), polyolefin derivative glue (polyolefin derivative adhesive), polyamide (polyamide, nylon), Polyurethane (polyurethane, PU), polystyrene butadiene copolymer compound, polyethylene polypropylene co-polymer, ethylene styrene co-polymer (ES), ring-type alkene co-polymer (cyclo olefin), one-pack-type primer (primer), two liquid type primers (primer), rubber (rubbers), hot melt adhesive (hotmelt elastomers), silica gel (silicone elastomers), ionic high molecular cpd (ionomer), thermoplasticity glue (thermal plastic rubber), paim wax, paraffin, micrinite wax, peak wax, with natural wax materials (natural wax) such as rice bran waxs, polyethylene (PE) synthetic wax, its chlorinated polypropylene (PP) wax, poly-ethoxy resin (PEO) wax, with other petroleum product, the Dormant oils product, polyolefins (polyolefin), artificial synthetic wax material (man-madewax or synthetic wax) such as the oxide synthetic wax of wax product, aliphatic acid (fatty acid) and derivant thereof, or the materials such as derivant of starch and starch-containing matter thereof form, or are formed by above combination of materials; This adhesion layer a plurality of microcosmic interstitial structures zone of can all or part of zone sticking together the covering substrates rete wherein.

The base material rete 2 that above-mentioned packing box 1 open end covers or

packaging bag

6,6 ' and 61 tools of bag microcosmic

interstitial structure zone

21,21 ', 63,63 ' of establishing, the machining area area can be selected all or part of scope.

The adhesive coating coating process of involution rete 3, the 7 one side aspect institutes combination that above-mentioned packing box 1 open end base material rete 2 or packaging bag 6,6 ' bag 61 are fitted can adopt after the adhesion material solution coat dry or direct heat to melt coating and fit with hot pressing.

Adopt the food of hermetic food heating automatic pressure-regulation packaging device packing of the present invention, if when solids content and water-soluble liquid contents, separately deposit at normal temperature or the next palpus of freezing and refrigeration temperature, to avoid food solid during accumulating, liquids is mixed mutually so that is degenerated, for example rice and wheaten food and conditioning soup juice, a practical application example of the present invention, for this aqueous system body portion can be earlier with a container such as sealed package bag or the airtight filling of packaging tray tool, and with solids content with placing in this automatic pressure-regulation packaging device, so in microwave heating process, make packaging bag or the material deliquescing of packaging tray tool because of being heated and preferentially peel off, make and disengage in preferential self-sealed packaging bag of the aqueous system or the packaging tray tool and mix, carry out Hybrid Heating then with solids content.

Hermetic food heating automatic pressure-regulation packaging device of the present invention, packaging applications for high oil-containing water-based or high saltiness food, because the high-temperature steam pressure that moment produces in the microwave heating process is excessive, for safety, this Sealing adhesive tape can move from food Packaging box body or bag stripping earlier before microwave heating, make the High Temperature High Pressure vapours that produces in the heat process be able to directly carry out the adjusting (regulate the excess build up steam pressure) of compression functions, do not have the problem of broken bag via microcosmic interstitial structure zone.

Food heating automatic pressure-regulation packaging device of the present invention has following advantage on the implementation:

1, this has the hermetic food packing device and can be applicable to load the food that contains liquid composition, as soup juice and so on.

2, this covers the Sealing adhesive tape on the microcosmic interstitial structure zone, has reusability.

3, be stored in the interior food of packing device of the present invention, can definitely avoid the exsiccation albefaction frostbite phenomenon (ice burn) that causes having moisture flow to become homeless through long-time chilled storage.

4, having heating automatic pressure-regulation packaging device can use in food microwave vacuum packing.

5, has heating automatic pressure-regulation packaging device, the adhesive coating part of its Sealing adhesive tape can be sticked together to fit and be covered a plurality of microcosmic interstitial structures zone that has on the base material film, for making things convenient for this Sealing adhesive tape of repeated usage, the involution rete does not have the mucigel subregion and can be torn off through this zone easily.

6, the present invention has heating automatic pressure-regulation packaging device and belongs to one and have dual pressurized, heated device for cooking (double pressure cooking mechanism), can shorten the food heating required time that boils.

7, the present invention has heating automatic pressure-regulation packaging device and belongs to a flexible packaging device, can be applicable to microwave heating process, the application of one direct high efficiency cooking on food is provided, the green technology product that energy use efficiency is high, this is different from the indirect heating principle of the traditional food device for cooking of low energy service efficiency.

8, have heating automatic pressure-regulation packaging device and transport in the process, keep a leakproofness storage space, food flavor is not leaked, can avoid the intrusion of small insect such as ant in storage, long between freshness date.

9, have heating automatic pressure-regulation packaging device and compare with the metal cooking-vessel, it is little to take up space, and preserves food easily, its in light weight and handled easily.

10, having heating automatic pressure-regulation packaging device can provide general house, the microwave cooked food of kitchen consumer bag.

Breathing material film of the present invention in addition also can be made into back of the body envelope formula bag, contained side bag, tripartite bag, vertical bag various packaging applications bags such as (back sealed bags, gadget bags, three sides bags or standup pouches).

The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims

1, a kind of composite film for hermetic food heating automatic pressure-regulation packaging device is characterized in that, comprises at least:

2, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1, it is characterized in that, described base material rete is by at least a following material, acryl, polyesters, polyethylene, polypropylene, polyamide, the ethylene styrene co-polymer, ring-type alkene co-polymer, the poly terephthalic acid diethylester, polyvinyl alcohol, the ethylene-vinyl alcohol co-polymer, ethylene-ethyl acetate, ionic high molecular cpd, carbowax is to naphthalate, poly ether-ketone (PEK), polycarbonate, polysulfones, pi, polypropylene cyanogen, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, nylon, paraffin paper, the Polymer multilayer is the extrusion stretched PTFE film altogether, synthetic paper, glass paper, the paper that High molecular material covers, paper wood is formed, or is formed by above combination of materials.

3, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1, it is characterized in that, described involution rete is by at least a following material, olefin polymer, polyethylene, polypropylene, polyester film, the poly terephthalic acid diethylester, polystyrene, polyvinylchloride, carbowax is to naphthalate, poly ether-ketone (PEK), polycarbonate, pi, polysulfones, polypropylene cyanogen, acryl, polyethylene polypropylene co-polymer, the ethylene styrene co-polymer, ring-type alkene co-polymer, polyvinyl alcohol, ethylene-ethyl acetate, styrene-acrylonitrile copolymer cyanogen co-polymer, Polyurethane, nylon, polyamide, the ethylene styrene co-polymer, ionic high molecular cpd, synthetic paper, paraffin paper, the polyethylene adhesive-bonded fabric, the polypropylene adhesive-bonded fabric, inorganic matter adds plastic film, synthetic paper, multilayer is the extrusion stretched PTFE film altogether, multilayer complex films combines.

4, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1 is characterized in that, described involution rete is fitted by plastic film or evaporation one metal level complex film is formed.

5, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 4 is characterized in that, described metal level is an aluminum or aluminum alloy.

6, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1, it is characterized in that, described adhesion layer material is by the acrylic poly-mer, polyesters, olefin polymer, polyethylene, polypropylene, ring-type alkene co-polymer, polyvinyl alcohol, ethylene-ethyl acetate, the ethylene-vinyl alcohol co-polymer, polyolefin derivative glue, polyamide, Polyurethane, polystyrene butadiene copolymer compound, polyethylene polypropylene co-polymer, the ethylene styrene co-polymer, ring-type alkene co-polymer, the one-pack-type primer, two liquid type primers, rubber, hot melt adhesive, silica gel, ionic high molecular cpd, thermoplasticity glue, paim wax, paraffin, micrinite wax, peak wax, with natural wax materials such as rice bran waxs, the polyethylene synthetic wax, its chlorinated polypropylene wax, poly-ethoxy resin wax, with other petroleum product, the Dormant oils product, polyolefins, artificial synthetic wax material such as the oxide synthetic wax of wax product, aliphatic acid and derivant thereof, and the derivant of starch and starch-containing matter thereof forms, or formed by above combination of materials.

7, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1 is characterized in that, freezing, the chilled food packing device of described airtight involution are Packaging box body or bag.

8, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1 is characterized in that, all or part of zone of described base material rete has a plurality of microcosmic interstitial structures zone.

9, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1 is characterized in that, the microcosmic interstitial structure zone of covering substrates rete is sticked together in all or part of zone of described adhesion layer.

10, composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 1 is characterized in that, the microcosmic interstitial structure zone wide cut that is had according to the base material rete determines the involution rete greater than the Sealing adhesive tape of this scope.

11, a kind of manufacture method of composite film for hermetic food heating automatic pressure-regulation packaging device is characterized in that, comprising:

12, the manufacture method of composite film for hermetic food heating automatic pressure-regulation packaging device according to claim 11, it is characterized in that, described adhesion layer is coated in the method on involution rete one side surface of Sealing adhesive tape, adopts after the adhesion material solution coat drying or direct heat to melt coating.