CN106081361B - A kind of plastic packing box and the wherein preparation method of cavity film - Google Patents
A kind of plastic packing box and the wherein preparation method of cavity film Download PDFInfo
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- CN106081361B CN106081361B CN201610464718.5A CN201610464718A CN106081361B CN 106081361 B CN106081361 B CN 106081361B CN 201610464718 A CN201610464718 A CN 201610464718A CN 106081361 B CN106081361 B CN 106081361B
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- Prior art keywords
- cavity
- layer
- packing box
- sealant
- film
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/052—Materials
- B65D2581/055—Plastic in general, e.g. foamed plastic, molded plastic, extruded plastic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Laminated Bodies (AREA)
- Packages (AREA)
Abstract
A kind of the present invention provides plastic packing box and wherein preparation method of cavity film, firstly, plastic packing box includes the cassette bottom being flexibly connected and box cover, cassette bottom, which is recessed to be formed on article putting groove article putting groove downwards, is equipped with multiple cavities；The shape of cavity is adapted with the shape of product of required packaging, cavity film is equipped on the surrounding inner wall of each cavity, the preparation method of cavity film includes Step1: the preparation of sealant: by metallocene PE, polyisobutene and the low density polyethylene of sealant, it is jointly added to double-layer coextrusion inflation film manufacturing machine, sealant is disposably squeezed out using film-blowing process；Step2: compound extruded process: the polypropylene layer of the unformed composite nylon copolymer layer for being copolymerized phenolic aldehyde layer, fibre modification and modified by maleic acid anhydride graft is squeezed out on squeezing out compounding machine, Quench sizing is carried out in recombination process；Then mechanical energy makes annealing treatment；Step3: the composite layer in sealant and Step2 is compound.
Description
Technical field
The present invention relates to box technology field more particularly to a kind of plastic packing boxes, further relate to this plastic packing box
Used in cavity film preparation method.
Background technique
Plastic packing box has been widely used due to its significant advantage, and existing plastic packing box includes setting mostly
Object slot and high frequency sealing edges.The plastic packing box produced through plastic suction forming apparatus is all nested together for the ease of storage, by
It is the same in the shape of plastic packing box, so the gap between plastic packing box is just very small, a little or even completely sticks
Together, it is difficult to separate, needs manual removal, is sealed with such plastic packing box when packing, if it is manual operation, then
It wastes time, reduces production efficiency, if it is mechanized operation, be then easy to produce waste product, improve cost.
Blister packaging using very extensive, food packaging, fruit packaging, fresh packaging even electronic product, hardware packet
Dress etc., such as Chinese patent 204846609U discloses a kind of novel plastic packing box, it is characterised in that: including upper cartridge body and
Lower box body, the lower box body include the first edge and the first accommodating chamber, and first edge is equipped with the first card slot and first and connects
Fitting, first connector are fixedly connected with first edge, and the opposite at first edge is equipped with the second edge, described
Second edge is equipped with the first card convex, and first edge and second edge are fixed with first accommodating chamber respectively to be connected
It connecing, the upper cartridge body includes third edge and the second accommodating chamber, and the third edge is equipped with the second card slot and the second connector,
Second connector is fixedly connected with the third edge, and the opposite at the third edge is equipped with the 4th edge, and the described 4th
Edge is equipped with the second card convex, and the third edge and the 4th edge are fixedly connected with second accommodating chamber respectively, institute
It states the first card slot and second card convex is clamped, second card slot and first card convex are clamped.The technical solution is being transported
It stacks in the process neatly, is not easy to fall, save space, it is practical.But the plastic packing box shake it is obvious at the time of with
And thermal insulation property, fresh keeping property etc. are still extremely short of.
Such as Chinese patent 202574992U discloses a kind of modified blister packaging for having preferable shockproof cushioning effect again
Box, including box body and the lid being covered on above the box body, the box body includes superficial layer and the inside layer, and the superficial layer is in arch
Shape, and formation one can accommodate the strip groove of product after photons edge and the inside layer integrated molding；The bottom plate of the strip groove is
Above-mentioned the inside lamination is equipped with trapezoidal arch bottom.The technical solution points out have buffering and damping effect by trapezoidal arch bottom shock-damping structure, can
It is widely used in the packaging of some minitype precious articles.Simultaneously using PET or APET etc. can environmentally friendly recycling and reusing and tool it is excellent
The macromolecule environment-friendly materials of toughness, intensity and transparency, wherein APET plastic uptake material polyester sheet belongs to degradability plastics, by
Its manufactured blister packaging using after discarded can natural degradation be water and carbon dioxide, not will cause environmental pollution.Although tool
Play the role of using trapezoidal arch bottom structure with certain bumper and absorbing shock, but the effect of bumper and absorbing shock be not it is ideal,
Shake it is obvious at the time of and thermal insulation property, in terms of be still extremely short of.
Summary of the invention
To overcome obvious and thermal insulation property, fresh keeping property etc. existing in the prior art of shaking still extremely to be short of
The problem of, a kind of the present invention provides plastic packing box and wherein preparation method of cavity film.
The technical solution adopted by the present invention are as follows: a kind of plastic packing box, cassette bottom and box cover including flexible connection, cassette bottom to
Lower recess forms article putting groove, and innovative point is: multiple cavities are equipped on article putting groove；The production of the shape of cavity and required packaging
Product shape is adapted, and cavity film is equipped on the surrounding inner wall of each cavity, and the cavity is independently disposed on article putting groove,
And cavity bottom and article putting groove every empty a distance；The cavity film includes the sealant, barrier layer, weathering layer set gradually
And adhesive layer；The sealant is the block copolymerization polyethylene and ethylene copolymers being modified with metallocene polypropylene and polyisobutene
Layer；The barrier layer is copolymerization phenolic aldehyde layer；The weathering layer is the unformed composite nylon copolymer layer with fibre modification；It is described
Adhesive layer is the polypropylene material with modified by maleic acid anhydride graft.
On this basis, the shape of the cavity is the regular shape of non-close, and the cavity is by upper and lower two parts group
At lower part is divided into uncovered rule cuboid or uncovered regular cylindrical body, top are divided into fixed compliant member, the fixation compliant member
With uncovered rule cuboid or uncovered regular cylindrical body by integral forming.
On this basis, the bottom of the cavity and article putting groove are 2~3cm at a distance from sky.
On this basis, the bottom middle position of the cavity is provided with fixation member one, and the bottom of article putting groove is corresponding
Position be provided with fixation member two, two adelphotaxy of the fixation member one and fixation member.
On this basis, the fixation member one is magnetic component, and the fixation member two is magnetic pedestal.
On this basis, the additional amount of the metallocene polypropylene and polyisobutene in the sealant mixture is
20%~25%.
On this basis, additional amount of the unformed composite nylon in the weathering layer mixture be 30%~
40%；The amount that the fiber is added in the weathering layer mixture is 3~5%.
On this basis, the fiber includes carbon fiber, glass fibre and plasticized modifier；The carbon fiber, glass fibers
The weight percent composition that peacekeeping plasticized modifier accounts for fiber total amount is as follows: 10~30wt% of carbon fiber, and glass fibre 20~
45wt%, 45~55wt% of plasticized modifier.
On this basis, the thickness of the sealant accounts for the 20%~35% of the cavity film overall thickness, the adhesive layer
Thickness account for the 15%~20% of the cavity film overall thickness, the thickness of the barrier layer accounts for the 10% of the cavity film overall thickness
~15%, weathering layer thickness accounts for the 40%~45% of the cavity film overall thickness.
It is a further object to provide a kind of preparation methods of cavity film in plastic packing box: its innovative point exists
In: the following steps are included:
Step1: the preparation of sealant: by the metallocene polypropylene, polyisobutene and low density polyethylene of sealant,
It is jointly added to double-layer coextrusion inflation film manufacturing machine, sealant is disposably squeezed out using film-blowing process；
Step2: compound extruded process: by be copolymerized phenolic aldehyde layer, fibre modification unformed composite nylon copolymer layer and
The polypropylene layer of modified by maleic acid anhydride graft squeezes out on squeezing out compounding machine, and Quench sizing is carried out in recombination process；Then mechanical
It can annealing；
Step3: the composite layer in sealant and Step2 is compound；
Further, in Step2, the process conditions of compound working procedure are squeezed out are as follows: 50~60 DEG C of drying tunnel temperature first segment, the
Two sections 80~90 DEG C；100~120 ms/min of speed, platen pressure is 3.5~4.2kg/cm2；Curing time control 10~
15 hours, curing temperature was controlled at 45 DEG C；When Quench is formed, the surface temperature control of sharp cooling roll is at 18-20 DEG C；The table of casting roller
Surface roughness is 0.23 millimeter, and the entire roll surface temperature difference is at 0-3 DEG C.
Compared with prior art, the beneficial effects of the present invention are:
(1) plastic packing box of the invention is equipped with multiple cavities on article putting groove, is equipped with appearance on the surrounding inner wall of cavity
Chamber film, and the cavity film being arranged is formed by special material, has the function of fresh-keeping, sterilizing, can also enhance the resistance to of cavity surface
Mill, weatherability, are conducive to food, fruits and vegetables or other products in cavity in transport or storage, keep good quality.
(2) plastic packing box of the invention, cavity film include the sealant set gradually, barrier layer, weathering layer and bonding
Layer, wherein it is worth noting that, sealant, barrier layer, weathering layer and adhesive layer are made of different materials respectively, can be had
Different effects ensure that film isolation outside contamination in inner cavity guarantees that product is fresh by sealing, barrier and weathering layer, can it is wear-resisting,
It is weather-proof, it is not easy to wear, it is influenced by seasonal variations very little, keeps good product quality, adhesive layer uses special material
It is made, bonding degree is high, and tack time is long, can guarantee that cavity film is bonded in cavity surrounding effectively and for a long time.
(3) plastic packing box of the invention, the thickness for setting sealant accounts for the 20%~35% of cavity film overall thickness, described
The thickness of adhesive layer accounts for the 15%~20% of the cavity film overall thickness, the thickness of barrier layer account for cavity film overall thickness 10%~
15%, weathering layer thickness accounts for the 40%~45% of cavity film overall thickness.Wherein, the thickness of weathering layer is set maximum, is conducive to mention
High abrasion, weatherability, it is not easy to wear；The thickness of barrier layer is minimum, and barrier layer setting is thinner, can more keep out ultraviolet irradiation,
Guarantee product quality.
(4) plastic packing box of the invention, cavity are made of upper and lower two parts, lower part be divided into uncovered rule cuboid or
Uncovered regular cylindrical body, top are divided into fixed compliant member, and the product that cavity lower part partial volume is placed needed for receiving, cavity top is set up separately
Fixed compliant member is set, further fixation can be carried out to product and is pushed down, so that product shaking amplitude is very small, significantly favorably
In bumper and absorbing shock.
(5) plastic packing box of the invention, the bottom of cavity are 2~3cm at a distance from sky with article putting groove, both be ensure that
The fixation member of the bottom of cavity and the setting of glove trench bottom has stronger interaction force, also can guarantee and consolidates when product unloads
The interaction force for determining component can be removed easily, without damaging product itself.The distance of setting is just right, very ingeniously
It is wonderful.
(6) in plastic packing box of the invention cavity film preparation method, reduce transport and sales process breakage rate, drop
Low packaging film cost, packaging speed improves when production, guarantees good combined strength bination.
Detailed description of the invention
Fig. 1 is plastic packing box overall structure diagram of the present invention；
Fig. 2 is holding cavity structure schematic diagram of the present invention；
Fig. 3 is the preferred embodiment top view that the present invention is arranged after fixed compliant member；
Fig. 4 is another preferred embodiment top view that the present invention is arranged after fixed compliant member；
Fig. 5 is one preferred embodiment structural schematic diagram of magnetic pedestal of the present invention；
Fig. 6 is cavity membrane structure setting schematic diagram.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
The present invention discloses a kind of plastic packing box, which can be with packaged water fruits and vegetables, fresh, egg etc.
Product.It as shown in Figure 1: include the cassette bottom 2 being flexibly connected and box cover 1, recess forms article putting groove 21, article putting groove 21 to cassette bottom 2 downwards
On be equipped with multiple cavities 22；Cavity 22 is to be uniformly distributed, and can also be set as double from the point of view of the actual height according to article putting groove 21
Layer or three layers etc., every layer of cavity 22 is uniformly distributed.In addition, the shape of cavity 22 needs the shape of product phase with required packaging
Adaptation, suitably to be packed.The appearance for being equipped with cavity film 221 on the surrounding inner wall of each cavity 22, and being arranged
Chamber film 221 can be formed by special material, had the function of fresh-keeping, sterilizing, can also be enhanced the wear-resisting, weather-proof of cavity surface
Property, be conducive to food, fruits and vegetables or other products in cavity in transport or storage, keep good quality.As excellent
Choosing, cavity 22 is independently disposed on article putting groove 21, and the bottom of cavity 22 and article putting groove 21 are every empty a distance.In this implementation
In mode, the bottom of cavity 22 is set as 2~3cm at a distance from sky with article putting groove 21, both ensure that bottom in cavity 22 with
The fixation member of 21 bottom of article putting groove setting has stronger interaction force, also can guarantee the phase of the fixation member when product unloads
Interreaction force can be removed easily, without damaging product itself.The distance of setting is just right, very ingenious.Certainly, if
It is considered that the height of packing box itself is unsuitable excessively high, then the bottom of cavity 22 can be set at a distance from sky with article putting groove 21
For 2cm.
As it is further preferred that as shown in Figure 2: the shape of present embodiment cavity 22 is the regular shape of non-close,
The cavity 22 is made of upper part 220,222 two parts of lower part, and lower part 222 is uncovered rule cuboid or uncovered rule
Cylindrical body or reverse frustoconic (as shown in Figure 1, 2, being reverse frustoconic), can be adaptively adjusted according to the product of required packing.
For example, in general, lower part 222 is selected as when it is oval or circular for needing the product encapsulated to be the bottoms such as egg, duck's egg
Uncovered regular cylindrical body or reverse frustoconic, to adapt to shape of product, when the product bottom that needs encapsulate is not oval or circular
When, lower part 222 is selected as uncovered rule cuboid.In addition, the height of the lower part 222 of cavity 22 be product height 1/3~
2/3, certain height is reserved to part 220 on cavity 22.In addition, upper part 220 is fixed compliant member, the fixation flexible part
Part and lower 222 uncovered rule cuboid of part or uncovered regular cylindrical body by integral forming.The effect of the fixed compliant member is non-
It is often important, mainly after product is put into lower part 222, fixed effect is further functioned as in upper part 220.
Fixation compliant member in present embodiment can be flexible feeler or flexible contacting surface, have certain stretching bullet
Property, as shown in Fig. 1,2 or 3: when fixed compliant member is selected as flexible touching angled construction 2201, flexibility touching angled construction 2201
It needs to be provided at least four, is preferably four in present embodiment.It is the soft of any radius that the flexibility, which touches angled construction 2201,
Property stretch cylindrical body, it is preferred that radius is 2~3cm, as shown in Figure 3: 4 soft stretch cylindrical bodies inclination is fixed on down
The four direction of part 222 is separately fixed at the middle position of the four edges of cuboid when part 222 is cuboid instantly；When
It when lower part is divided into cylindrical body, is separately fixed on cylindrical body, and equidistantly distributes.In addition, 4 soft stretch cylindrical bodies are to production
The inclination of product side, and tilt angle is all the same, tilt angle is 10~15 °.The setting of tilt angle, it is contemplated that, if inclination
Angle is excessive, causes product to be put into the increase of 22 difficulty of cavity, reduces operating efficiency, and be easily destroyed product surface, if inclination
Angle too small is then easy to cause soft stretch cylindrical body fixed effect bad, is not fixed firmly and leans on.Therefore, test proves that, it is soft
Property stretch the tilt angle of cylindrical body and both can guarantee good fixing effect in 10~15 ° of this sections, and product is put into cavity 22
Difficulty not will increase, and not influence operating efficiency, and not allow destructible product surface.In addition, the length of 4 soft stretch cylindrical bodies
(bus of namely cylindrical body is long) is advisable with the height for being no more than part 222 under product itself exposing cavity after inclination.
As shown in Figure 4: when fixed compliant member is selected as flexible contacting surface structure 2202, flexibility touching planar structure 2202 is needed
At least two are provided with, is preferably two in present embodiment, and be oppositely arranged.Flexibility touching planar structure 2202 is not surpass
The rectangle of any width under the conditions of 22 width of cavity or diameter is crossed, the width of the rectangle is fixed under cavity 22 on part 222,
The length direction of the rectangle is obliquely installed.As it is further preferred that the width of flexible touching planar structure 2202 is cavity width
10~20%, the length of rectangle exposes the height of part under cavity to be no more than product itself after tilting and is advisable.The flexibility
It touches planar structure 2202 to tilt to product side, and tilt angle is all the same, tilt angle is 10~15 °.Tilt angle
Setting, it is contemplated that, if tilt angle is excessive, product is caused to be put into the increase of 22 difficulty of cavity, reduce operating efficiency, and is easy broken
Bad product surface is easy to cause flexible touching 2202 fixed effect of planar structure bad, is not fixed firmly if tilt angle is too small
It leans on.Therefore, test proves that, the tilt angle of flexibility touching planar structure 2202 both can guarantee in 10~15 ° of this sections
Good fixing effect, and product is put into 22 difficulty of cavity and not will increase, and does not influence operating efficiency, and do not allow destructible product surface.
Further, since flexible contacting surface is bigger than the contact area of flexible feeler, and therefore, when selecting flexible contacting surface, flexibility touching planar structure
Number of 2202 number less than flexible touching angled construction 2201.As it is further preferred that in flexible feeler or flexible contacting surface
Surface can increase contact surface area or increase press member, to improve the effect of bumper and absorbing shock.In use, first by flexible feeler
Or flexible contacting surface flexibility is pushed aside, after being put into product, flexible feeler or flexible contacting surface are voluntarily tightly attached to product surface, push down solid
It is fixed.Flexible feeler or flexible contacting surface select flexible material, such as rubber etc. will not generate injury to product surface.
As it is further preferred that also increasing inside plastic packing box has absorption fixation member.Specifically: as shown in Figure 1:
The bottom middle position of plastic packing box cavity 22 is provided with fixation member 1, the corresponding position in the bottom of article putting groove 21
It is provided with fixation member 2 24,2 24 adelphotaxy of the fixation member 1 and fixation member.Preferably, fixation member
One 23 be magnetic component, and the fixation member 2 24 is magnetic pedestal.In the present embodiment, magnetic component can be selected simply
Public magnetic, magnetic pedestal is selected as female magnetic, between male magnetic and female magnetic in the presence of suitable distance, mutually has certain attract
Power, in addition, magnetic pedestal can be advanced optimized, specific structure are as follows: as shown in Figure 5: magnetic pedestal is truncated cone-shaped structure
240, truncated cone-shaped structure upper end is fixed with female magnetite or is coated with female magnetic coating (as shown in Figure 5: selecting in central area
Coat female magnetic coating 241), depending on the case where thickness of coating optionally quotes size, 240 bottom of truncated cone-shaped structure with set
21 bottom of object slot is fixedly connected.As it is further preferred that female magnetic coating 241 of 240 upper end of truncated cone-shaped structure coating is branch
Coating can save manufacturing cost.For example, rotary table upper surface, using rotary table center as the center of circle, required radius is the circle that radius is formed
Point carries out coating female magnetosphere, also it can be selected that carrying out subregion coating according to demand on rotary table edge simultaneously, guarantees absorption effect
While fruit, manufacturing cost is also saved.
In the present embodiment, the cavity film 221 of setting is formed by special material, is had the function of fresh-keeping, sterilizing, may be used also
To enhance wear-resisting, the weatherability on 22 surface of cavity, food, fruits and vegetables or other products be conducive in cavity 22 are being transported or are being stored
In the process, good quality is kept.Specifically, as shown in Figure 6: the structure of cavity film 221 includes the sealant set gradually
2210, barrier layer 2211, weathering layer 2212 and adhesive layer 2213；The sealant 2210 of cavity film 221 primarily serves isolation sealing
Effect, for keeping out other pollutions such as extraneous dust, peculiar smell or sewage；2211 layers of effect of barrier be the strong light of barrier,
The injury of the light such as ultraviolet light；2212 main function of weathering layer guarantees that plastic packing box can adapt to spring, summer, autumn and winter Various Seasonal
Weather condition, overheat or supercooling all will not influence Product transport and quality；The main function of adhesive layer 2213 is sufficiently to stick
It is attached on cavity, guarantees that cavity film can effectively play a role.
As it is further preferred that sealant 2210 is a block being modified with metallocene polypropylene and polyisobutene
Polyethylene copolymer copolymer layer；The additional amount of the metallocene polypropylene and polyisobutene in the sealant mixture is
20%~25%.That is, additional amount of the metallocene polypropylene in the sealant mixture is 20%~25%；The amount of being preferably added to
It is 23%；Additional amount of the polyisobutene in the sealant mixture is also 20%~25%；The amount of being preferably added to is 22%.Most
Good, the two additional amount is consistent, i.e. the additional amount of metallocene polypropylene and polyisobutene in the sealant mixture is
22.5%.Sealant after this amount is added, seal degree is compact, and copolymer layer thickness is uniform.
As it is further preferred that the barrier layer 2211 obstructs the injury of the light such as strong light, ultraviolet light to be copolymerized phenolic aldehyde layer
Effect is good；Weathering layer 2212 is the unformed composite nylon copolymer layer with fibre modification；The unformed composite nylon is in institute
Stating the additional amount in weathering layer mixture is 30%~40%, preferably, unformed composite nylon is mixed in the weathering layer
Closing the additional amount in object is 35%, in addition, in present embodiment, unformed composite nylon be by fibre modification, it is modified
Nylon resin have the function of good heat-preservation ventilating, can guarantee that plastic packing box can adapt to spring, summer, autumn and winter Various Seasonal
Weather condition, overheat or supercooling all will not influence Product transport and quality.Last adhesive layer 2213 is to be grafted with maleic anhydride
Modified polypropylene material, viscosity is high, and tack time is long, can sufficiently paste on cavity, guarantees that cavity film can be effective
It plays a role.
As it is further preferred that unformed composite nylon is in 2212 mixture of weathering layer in present embodiment
Additional amount is 30%~40%；Preferably, additional amount 35%, enhancing nylon resin intensity and exclusive heat-preservation ventilating
Effect, increases the freshness of product.The amount that the fiber is added in the weathering layer mixture is 3~5%.Preferably, fine
Tieing up the amount being added in 2212 mixture of weathering layer is 4%.It is further preferred that the fiber includes carbon fiber, glass
Fiber and plasticized modifier；The carbon fiber, glass fibre and plasticized modifier account for the weight percent composition of fiber total amount such as
Under: 10~30wt% of carbon fiber, 20~45wt% of glass fibre, 45~55wt% of plasticized modifier.Preferably, carbon fiber, glass
Glass fiber and plasticized modifier account for the weight percent composition of fiber total amount are as follows: carbon fiber 25wt%, glass fibre 28wt% increase
Tough modifying agent 47wt%.
In order to further ensure product quality, the thickness of present embodiment setting sealant 2210 accounts for the cavity film 221
The 20%~35% of overall thickness, the thickness of the adhesive layer 2213 accounts for the 15%~20% of 221 overall thickness of cavity film, described
The thickness of barrier layer 2211 accounts for the 10%~15% of 221 overall thickness of cavity film, and 2212 thickness of weathering layer accounts for the cavity film
The 40%~45% of 221 overall thickness.Wherein, the thickness of weathering layer 2212 is set maximum, is conducive to improve wear-resisting, weatherability, no
It is easy to wear；The thickness of barrier layer is minimum, and the setting of barrier layer 2211 is thinner, more can reflect and absorb and keep out ultraviolet irradiation,
Guarantee product quality.It is described viscous as it is further preferred that the thickness of sealant 2210 accounts for the 26% of the cavity film overall thickness
The thickness of knot layer 2213 accounts for the 17% of the cavity film overall thickness, and the thickness of the barrier layer 2211 accounts for the cavity film overall thickness
12%, 2212 thickness of weathering layer accounts for the 45% of the cavity film overall thickness.Using the thickness of ratio above than setting, Neng Goubao
The effect of card cavity film performs to optimum efficiency, and product quality is effectively ensured.
Embodiment 2
On the basis of embodiment 1, present embodiment discloses the preparation method of cavity film in above-mentioned plastic packing box, packet
Include following steps:
Step1: the preparation of sealant: by the metallocene polypropylene, polyisobutene and low density polyethylene of sealant,
It is jointly added to double-layer coextrusion inflation film manufacturing machine, sealant is disposably squeezed out using film-blowing process.
Step2: compound extruded process: by be copolymerized phenolic aldehyde layer, fibre modification unformed composite nylon copolymer layer and
The polypropylene layer of modified by maleic acid anhydride graft squeezes out on squeezing out compounding machine, and Quench sizing is carried out in recombination process；Then mechanical
It can annealing；Squeeze out the process conditions of compound working procedure are as follows: 50~60 DEG C of drying tunnel temperature first segment, 80~90 DEG C of second segment；Vehicle
100~120 ms/min of speed, platen pressure are 3.5~4.2kg/cm2；Curing time control was at 10~15 hours, curing temperature
Control is at 45 DEG C；When Quench is formed, the surface temperature control of sharp cooling roll is at 18-20 DEG C；The surface roughness of casting roller is 0.23
Millimeter, the entire roll surface temperature difference is at 0-3 DEG C.
Step3: the composite layer in sealant and Step2 is compound.
Above-mentioned cavity film is successively sealant 2210, barrier layer 2211, weathering layer 2212 and adhesive layer 2213 from outside to inside；
It is specifically made of following proportions: metallocene polypropylene and polyisobutene adding in the sealant mixture in sealant 2210
Entering amount is 22.5%；Barrier layer 2211 is copolymerization phenolic aldehyde layer；Weathering layer is that 2212 unformed composite nylons are mixed in the weathering layer
Closing the additional amount in object is 35%；Adhesive layer 2213 is the polypropylene material with modified by maleic acid anhydride graft.
Embodiment 3
On the basis of embodiment 2, this cavity film is successively sealant 2210, barrier layer 2211, weathering layer from outside to inside
2212 and adhesive layer 2213；Specifically be made of following proportions: metallocene polypropylene and polyisobutene are described in sealant 2210
Additional amount in 2210 mixture of sealant is 20%；Barrier layer by layer 2211 for copolymerization phenolic aldehyde layer；Weathering layer 2212 is without fixed
Additional amount of the type composite nylon in 2212 mixture of weathering layer is 30%；Adhesive layer 2213 is to be changed with maleic anhydride grafting
The polypropylene material of property.It is prepared using the preparation method of embodiment 2, obtains cavity film.
Embodiment 4
On the basis of embodiment 2, this cavity film is successively sealant 2210, barrier layer 2211, weathering layer from outside to inside
2212 and adhesive layer；Specifically be made of following proportions: metallocene polypropylene and polyisobutene are in the sealing in sealant 2210
Additional amount in 2210 mixture of layer is 25%；Barrier layer 2211 is copolymerization phenolic aldehyde layer；Weathering layer 2212 is unformed compound Buddhist nun
Additional amount of the dragon in 2212 mixture of weathering layer is 40%；Adhesive layer 2213 is with poly- the third of modified by maleic acid anhydride graft
Alkene material layer.It is prepared using the preparation method of embodiment 2, obtains cavity film.
By the cavity film of Examples 1 to 4 preparation and control sample, (PET film or BOPP film and polyethylene film PE pass through
The compounded composite material of dry type) test is compared, test result is as shown in the table:
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (8)
1. a kind of plastic packing box, cassette bottom (2) and box cover (1) including flexible connection, recess forms article putting groove to cassette bottom (2) downwards
(21), it is characterised in that: multiple cavities (22) are equipped on article putting groove (21)；The shape of cavity (22) and the product of required packaging
Shape is adapted, and is equipped with cavity film (221) on the surrounding inner wall of each cavity (22), the cavity (22) is independently arranged
In on article putting groove (21), and the bottom of cavity (22) and article putting groove (21) are every empty a distance；The cavity film (221) include according to
Sealant (2210), barrier layer (2211), weathering layer (2212) and the adhesive layer (2213) of secondary setting；The sealant (2210)
The block copolymerization polyethylene copolymer layers being modified for one with metallocene polypropylene and polyisobutene；The barrier layer (2211)
To be copolymerized phenolic aldehyde layer；The weathering layer (2212) is the unformed composite nylon copolymer layer with fibre modification；The adhesive layer
(2213) for the polypropylene material of modified by maleic acid anhydride graft, the shape of the cavity (22) is the regular shape of non-close
Shape, the cavity (22) are made of upper part (220), lower part (222) two parts, and lower part (222) is that uncovered rule is rectangular
Body or uncovered regular cylindrical body, upper part (220) be fixed compliant member, the fixation compliant member and uncovered rule cuboid or
Uncovered regular cylindrical body by integral forming, the height of part (222) is the 1/3~2/3 of product height under cavity (22), fixed flexible
Component is flexible feeler or flexible contacting surface with certain tensile elasticity, is tilted to product side, and tilt angle is homogeneous
Together, tilt angle is 10~15 °.
2. plastic packing box according to claim 1, it is characterised in that: the bottom and article putting groove (21) of the cavity (22)
Every empty distance be 2~3cm.
3. plastic packing box according to claim 1, it is characterised in that: the bottom middle position of the cavity (22) is arranged
There is fixation member one (23), the corresponding position in bottom of article putting groove (21) is provided with fixation member two (24), the fixed part
Part one (23) and fixation member two (24) adelphotaxy.
4. plastic packing box according to claim 3, it is characterised in that: the fixation member one (23) is magnetic component,
The fixation member two (24) is magnetic pedestal.
5. plastic packing box according to claim 1, it is characterised in that: the metallocene polypropylene and polyisobutene are in institute
The additional amount stated in sealant (2210) mixture is 20%~25%.
6. plastic packing box according to claim 1, it is characterised in that: the unformed composite nylon is in the weathering layer
(2212) additional amount in mixture is 30%~40%；The amount that the fiber is added in the weathering layer (2212) mixture
It is 3~5%.
7. plastic packing box according to claim 1, it is characterised in that: the fiber include carbon fiber, glass fibre and
Plasticized modifier；The weight percent composition that the carbon fiber, glass fibre and plasticized modifier account for fiber total amount is as follows: carbon fiber
Tie up 10~30wt%, 20~45wt% of glass fibre, 45~55wt% of plasticized modifier.
8. plastic packing box according to claim 1, it is characterised in that: the thickness of the sealant (2210) accounts for the appearance
The 20%~35% of chamber film (221) overall thickness, the thickness of the adhesive layer (2213) account for cavity film (221) overall thickness
15%~20%, the thickness of the barrier layer (2211) accounts for the 10%~15% of cavity film (221) overall thickness, weathering layer
(2212) thickness accounts for the 40%~45% of cavity film (221) overall thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610464718.5A CN106081361B (en) | 2016-06-24 | 2016-06-24 | A kind of plastic packing box and the wherein preparation method of cavity film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610464718.5A CN106081361B (en) | 2016-06-24 | 2016-06-24 | A kind of plastic packing box and the wherein preparation method of cavity film |
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| CN106081361B true CN106081361B (en) | 2019-02-26 |
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| CN2825522Y (en) * | 2005-09-30 | 2006-10-11 | 吴建清 | Protective tray for egg package |
| JP2008120422A (en) * | 2006-11-13 | 2008-05-29 | Hiroyuki Shibata | Protector for egg case |
| CN102380991B (en) * | 2010-09-06 | 2014-09-10 | 苏州海顺包装材料有限公司 | Plastic packaging film and preparation method thereof |
| CN103158950A (en) * | 2011-12-19 | 2013-06-19 | 常州五星禽蛋有限公司 | Egg tray |
| CN202542160U (en) * | 2012-05-07 | 2012-11-21 | 邹乾 | Egg tray |
| CN205203815U (en) * | 2015-12-02 | 2016-05-04 | 四川农业大学 | Novel egg transport package box |
| CN106005741B (en) * | 2016-06-24 | 2019-02-26 | 海安华驰塑业科技有限公司 | A kind of plastic packing box |
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