CN208714626U - A kind of PVDC stretching counterdie and the composite package film using PVDC stretching counterdie - Google Patents
A kind of PVDC stretching counterdie and the composite package film using PVDC stretching counterdie Download PDFInfo
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- CN208714626U CN208714626U CN201820216407.1U CN201820216407U CN208714626U CN 208714626 U CN208714626 U CN 208714626U CN 201820216407 U CN201820216407 U CN 201820216407U CN 208714626 U CN208714626 U CN 208714626U
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- pvdc
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- counterdie
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Abstract
Counterdie is stretched the utility model relates to a kind of PVDC and the packaging of counterdie is stretched using PVDC.The stretching counterdie includes middle film layer and is compounded in the theca externa and theca interna in the middle film layer both side surface by adhesive layer, the middle film layer is compound PVDC layers of the blend composition of polyvinylidene chloride and ethylene-vinyl acetate copolymer, and the theca externa and theca interna include the compound polyolefin layer of the blend composition of polyolefin and elastomer.The PVDC of the utility model stretches counterdie, stretching counterdie is combined into using compound polyolefin layer, adhesive layer and compound PVDC layers, in the performance basis for keeping PVDC material, polyolefine material substantially, the toughness of each film layer can be improved, improve the toughness matching between film layer, to make the integrally stretching performance for stretching counterdie be improved, meets the needs of centering of particular envelope content, deep drawn.
Description
Technical field
The utility model belongs to Food Packaging technology field, and in particular to a kind of PVDC is stretched counterdie and drawn using PVDC
Stretch the packaging of counterdie.
Background technique
Based on stretch counterdie plastic flexible package technology in food packaging using more and more extensive, groundwork mistake
Journey is will to stretch counterdie to carry out punching press, to form the receiving cavity for being used for pack content, then recycles epiphragma and counterdie
Packaging process is completed in heat-sealing.This packaged form has stretch-proof, high-barrier and resistance to boiling by the selection of particular envelope film
Advantage is highly suitable for the fast package of the products such as food.
Publication No. is that the patent application of CN104972725A discloses a kind of composite packaging of resistance to boiling of stretch-proof high-barrier
Film, including epiphragma (A film) and stretching counterdie (B film), stretching counterdie is by boiling polypropylene RCPP film layer, adhesive phase, gathers
Vinylidene chloride PVDC film layer, adhesive phase, extraordinary polypropylene SCPP film layer are prepared.Polyvinylidene chloride (PVDC)
Generally acknowledged one of high-barrier packaging material, the film being processed into has excellent toughness, transparency, to numerous gas or
Steam has very high barrier and fabulous chemical corrosion resistance.
The elongation at break that existing PVDC stretches counterdie is generally 150% or so, though it is able to satisfy the shallow drawing of general merchandise
Requirement is stretched, but in facing needs, when the content of deep drawn packs situation, tensile property cannot be met the requirements, often
There is the phenomenon that film is broken.
Utility model content
The purpose of this utility model is to provide a kind of PVDC to stretch counterdie, to solve the existing stretch-proof for stretching counterdie
Performance is poor, can not achieve in, deep drawn require the problem of.The utility model also provides simultaneously a kind of stretches counterdie using PVDC
Composite package film.
To achieve the above object, the technical scheme adopted by the utility model is
A kind of PVDC stretches counterdie, including middle film layer and is compounded in the middle film layer both side surface by adhesive layer
Theca externa and theca interna, the middle film layer be compound PVDC layers, the theca externa, theca interna are polypropylene co-extrusion film layer
Or be polyethylene co-extrusion film layer, the polypropylene co-extrusion film layer includes successively setting on the thickness direction far from middle film layer
Binary atactic copolymerized polypropene corona layer, compound polyolefin layer A and the binary atactic copolymerized polypropene hot sealing layer set；The poly- second
Alkene co-extrusion film layer includes the metallocene catalysis linear low density polyethylene electricity set gradually on the thickness direction far from middle film layer
Dizzy layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer；Described compound PVDC layers by gathering inclined dichloro
The blend of ethylene and ethylene-vinyl acetate copolymer composition；The compound polyolefin layer A by binary atactic copolymerized polypropene and
The blend of elastomer forms；The compound polyolefin layer B is by metallocene catalysis linear low density polyethylene and polyolefin elastic
The blend of body forms.
The PVDC of the utility model stretches counterdie, using compound polyolefin layer A or compound polyolefin layer B, adhesive layer and answers
It closes PVDC layers and is combined into stretching counterdie, in the performance basis for keeping PVDC material, polyolefine material substantially, each film layer can be improved
Toughness, improve film layer between toughness matching, thus make stretch counterdie integrally stretching performance improved, meet specified packet
Content-filled centering, deep drawn demand.
Preferably, polypropylene co-extrusion film layer with a thickness of 35-65 μm.It is further preferred that binary atactic copolymerized polypropene
Corona layer, compound polyolefin layer A, binary atactic copolymerized polypropene hot sealing layer thickness be respectively 10-20 μm, 15-25 μm, 10-
20μm。
Preferably, polyethylene co-extrusion film layer with a thickness of 35-65 μm.It is further preferred that metallocene catalysis is linear low close
The thickness for spending polyethylene corona layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer is respectively 10-
20μm、15-25μm、10-20μm。
The middle film layer with a thickness of 10-30 μm.The adhesive layer with a thickness of 1-2.5 μm.
Under above-mentioned preferred embodiment, the PVDC of the utility model stretches counterdie, in addition in being able to satisfy, deep drawn require it
Outside, also have the characteristics that low-temperature heat-sealing, heat-shrinkable and chemical stability are good, be highly suitable for the fast package of food.
Technical solution used by the composite package film using PVDC stretching counterdie of the utility model is:
A kind of composite package film stretching counterdie using PVDC, including PVDC stretch counterdie and epiphragma, and PVDC stretches counterdie
With the receiving cavity for containing content, the PVDC stretches counterdie and includes middle film layer and be compounded in institute by adhesive layer
The theca externa and theca interna in middle film layer both side surface are stated, the middle film layer is compound PVDC layers, the theca externa, inner membrance
Layer is polypropylene co-extrusion film layer or is polyethylene co-extrusion film layer, and the polypropylene co-extrusion film layer is included in far from intermediate coat
Binary atactic copolymerized polypropene corona layer, compound polyolefin layer A and the binary random copolymerization set gradually on the thickness direction of layer
Polypropylene thermal sealing；The polyethylene co-extrusion film layer includes that the metallocene set gradually on the thickness direction far from middle film layer is urged
Change linear low density polyethylene corona layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer；It is described
The compound PVDC layers of blend by polyvinylidene chloride and ethylene-vinyl acetate copolymer forms；The compound polyolefin layer A by
The blend of binary atactic copolymerized polypropene and elastomer composition；The compound polyolefin layer B is linear low close by metallocene catalysis
Spend the blend composition of polyethylene and polyolefin elastomer.
The composite package film provided by the utility model that counterdie is stretched using PVDC is suitable for having middle and high stretching demand
Pack content, corresponding packing articles packaging effect is good, and oil resistivity, corrosion resistance, to protect taste, moistureproof and mildewproof and other effects excellent
It is good.
Detailed description of the invention
Fig. 1 is that the PVDC of the utility model stretches the structural schematic diagram of counterdie；
Fig. 2 is the structural schematic diagram of the composite package film that counterdie is stretched using PVDC of the utility model.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment 1 of the composite package film that counterdie is stretched using PVDC of the utility model, such as Fig. 1 to Fig. 2 institute
Show, including PVDC stretches counterdie 4 and epiphragma 5, PVDC stretches counterdie 4 with the receiving cavity 40, PVDC for containing content
Stretching counterdie 4 includes the first polypropylene co-extrusion film layer 1 set gradually from outside to inside, the first adhesive layer 20, polyvinylidene chloride
(PVDC) and the middle film layer 2 of the blend of ethylene-vinyl acetate copolymer (EVA) composition, the second adhesive layer 21 and second are poly-
Propylene co-extrusion film layer 3.
First polypropylene co-extrusion film layer 1 includes the third fourth binary atactic copolymerized polypropene first being bonded with the first adhesive layer 20
Corona layer 11, third the first hot sealing layer of fourth binary atactic copolymerized polypropene 13 and between the first corona layer, the first hot sealing layer
First middle layer 12 of the third fourth binary random copolymerization propylene and elastomer blend composition, the first corona layer, the first middle layer, the
The thickness of one hot sealing layer is respectively 15 μm, 20 μm, 15 μm.Second polypropylene co-extrusion film layer 3 is poly- including the third fourth binary random copolymerization
The second middle layer 32, the third fourth two of propylene the second corona layer 31, the third fourth binary random copolymerization propylene and elastomer blend composition
First the second hot sealing layer of atactic copolymerized polypropene 33, the second corona layer, the second middle layer, the second hot sealing layer thickness be respectively 15 μ
m、20μm、15μm。
Middle film layer 2 with a thickness of 20 μm.First adhesive layer 20, the second adhesive layer 21 are polyurethane bicomponent adhesive,
Thickness is 1.5 μm.
Existing conventional method preparation can be used in middle film layer, such as by PVDC resin (89wt%-99wt%), EVA resin
(0.1wt%-10wt%) and other regular processing aids (0.001wt%-5wt%) are squeezed after high mixer mixes by single screw rod
Machine squeezes out out, finally carries out blown film with double-membrane soaking method and is prepared.
The preparation process of PVDC stretching counterdie are as follows: coat adhesive layer on a side surface of middle film layer, then first is gathered
Propylene co-extrusion film layer is fitted in gluing layer surface；Adhesive layer is applied on another side surface of middle film layer later, then by second
Polypropylene co-extrusion film layer carry out it is compound, by gained composite membrane be placed in baking oven in 50 DEG C of cooked at constant 72h of 30- to get.
In the preparation, PVDC stretching counterdie drawn is existed for the composite package film for stretching counterdie using PVDC of the present embodiment
The central region of counterdie forms receiving cavity, after needing the content packed to be put into receiving cavity, is encapsulated using epiphragma.
Epiphragma may be selected and counterdie material of the same race or unlike material, and the requirement due to epiphragma to tensile property is low, uses the prior art
Conventional epiphragma.
The specific embodiment 2 of the composite package film that counterdie is stretched using PVDC of the utility model, structure and 1 base of embodiment
This is identical, and difference is only that surface layer, internal layer are polyethylene co-extrusion film layer, and polyethylene co-extrusion film layer includes along far from middle film layer
Aspect setting metallocene linear-low density polyethylene corona layer, metallocene linear-low density polyethylene and polyolefin elastomer
(POE) middle layer and metallocene linear-low density polyethylene hot sealing layer of blend composition, corona layer, middle layer, hot sealing layer
Thickness be respectively 15 μm, 20 μm, 15 μm.PVDC and EVA blend composition middle film layer with a thickness of 20 μm.Polyolefin
Elastomer (POE) is the thermoplastic elastomer (TPE) synthesized using the ethylene and octene of metallocene catalysis by in-situ polymerization.
In the other embodiments for stretching the composite package film of counterdie using PVDC in the utility model, surface layer in counterdie,
Middle layer, internal layer thickness can according to stretch need be adjusted, other can be used to meet the adhesive of security regulations for adhesive layer
Kind.
The PVDC of the utility model is stretched in the specific embodiment of counterdie, with the above-mentioned compound packet for stretching counterdie using PVDC
It fills in film, the structure that PVDC stretches counterdie is identical, and this will not be detailed here.
Below by common single layer PVDC film, the compound counterdie of PP/PVDC/PP, embodiment stretching counterdie performance pair
Than illustrating the characteristic of the stretching counterdie of the utility model.The structure of the compound counterdie of PP/PVDC/PP and the thickness and reality of each tunic
Apply that example 1 is identical, difference is only that the middle film layer of embodiment is made of the blend of PVDC and EVA, the detection of each performance indicator
Referring to GB/T 1040.3-2006, the regulation of GB/T1037- 1988, GB/T1038-2000 are carried out, specific testing result such as table 1
It is shown.
The performance indicator comparison for stretching counterdie and conventional stretching counterdie of 1 embodiment 1 of table and embodiment 2
By the test result of table 1 it is found that the elongation at break of the stretching counterdie of the utility model is up to 300% or more, oxygen
Gas through performance, water vapo(u)r transmission can also obtain a degree of improvement, can satisfy in all kinds of commodity in the market, deep-draw
Demand is stretched, has many advantages, such as that heat sealability is good, high intensity, puncture-resistant, transparency are good.
Claims (6)
1. a kind of PVDC stretches counterdie, it is compounded in the middle film layer both side surface including middle film layer and by adhesive layer
Theca externa and theca interna, which is characterized in that the middle film layer is compound PVDC layers, and the theca externa, theca interna are poly- third
Alkene co-extrusion film layer is polyethylene co-extrusion film layer, and the polypropylene co-extrusion film layer includes in the thickness side far from middle film layer
Binary atactic copolymerized polypropene corona layer, compound polyolefin layer A and the heat-sealing of binary atactic copolymerized polypropene set gradually upwards
Layer；The polyethylene co-extrusion film layer include on the thickness direction far from middle film layer the metallocene catalysis that sets gradually it is linear low close
Spend polyethylene corona layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer.
2. PVDC as described in claim 1 stretches counterdie, which is characterized in that binary atactic copolymerized polypropene corona layer, compound
Polyolefin layer A, binary atactic copolymerized polypropene hot sealing layer thickness be respectively 10-20 μm, 15-25 μm, 10-20 μm.
3. PVDC as described in claim 1 stretches counterdie, which is characterized in that metallocene catalysis linear low density polyethylene corona
The thickness of layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer is respectively 10-20 μm, 15-25 μ
m、10-20μm。
4. PVDC as described in any one of claims 1-3 stretches counterdie, which is characterized in that the middle film layer with a thickness of
10-30μm。
5. a kind of composite package film for stretching counterdie using PVDC, including PVDC stretch counterdie and epiphragma, PVDC stretches counterdie tool
There is the receiving cavity for containing content, which is characterized in that the PVDC stretches counterdie and includes middle film layer and pass through gluing
Layer is compounded in theca externa and theca interna in the middle film layer both side surface, and the middle film layer is compound PVDC layers, described
Theca externa, theca interna are polypropylene co-extrusion film layer or are polyethylene co-extrusion film layer, and the polypropylene co-extrusion film layer includes
Far from middle film layer thickness direction on set gradually binary atactic copolymerized polypropene corona layer, compound polyolefin layer A and
Binary atactic copolymerized polypropene hot sealing layer, and the thickness of each tunic is respectively 10-20 μm, 15-25 μm, 10-20 μm；The poly- second
Alkene co-extrusion film layer includes the metallocene catalysis linear low density polyethylene electricity set gradually on the thickness direction far from middle film layer
Dizzy layer, compound polyolefin layer B and metallocene catalysis linear low density polyethylene hot sealing layer, and the thickness of each tunic is respectively 10-
20μm、15-25μm、10-20μm。
6. the composite package film of counterdie is stretched using PVDC as claimed in claim 5, which is characterized in that the middle film layer
With a thickness of 10-30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216407.1U CN208714626U (en) | 2018-02-07 | 2018-02-07 | A kind of PVDC stretching counterdie and the composite package film using PVDC stretching counterdie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216407.1U CN208714626U (en) | 2018-02-07 | 2018-02-07 | A kind of PVDC stretching counterdie and the composite package film using PVDC stretching counterdie |
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| Publication Number | Publication Date |
|---|---|
| CN208714626U true CN208714626U (en) | 2019-04-09 |
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ID=65968988
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820216407.1U Expired - Fee Related CN208714626U (en) | 2018-02-07 | 2018-02-07 | A kind of PVDC stretching counterdie and the composite package film using PVDC stretching counterdie |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874084A (en) * | 2021-02-03 | 2021-06-01 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
-
2018
- 2018-02-07 CN CN201820216407.1U patent/CN208714626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874084A (en) * | 2021-02-03 | 2021-06-01 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
| CN112874084B (en) * | 2021-02-03 | 2023-08-22 | 洛阳晟鹏新材料科技有限公司 | PVDC high-barrier co-extrusion stretching film for packaging low-temperature meat products and preparation method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190409 Termination date: 20220207 |