CN109397814A - A kind of easily peelable thermophilic digestion polypropylene film - Google Patents
A kind of easily peelable thermophilic digestion polypropylene film Download PDFInfo
- Publication number
- CN109397814A CN109397814A CN201811104503.8A CN201811104503A CN109397814A CN 109397814 A CN109397814 A CN 109397814A CN 201811104503 A CN201811104503 A CN 201811104503A CN 109397814 A CN109397814 A CN 109397814A
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- CN
- China
- Prior art keywords
- easily peelable
- polypropylene film
- polypropylene
- thermophilic digestion
- middle layer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of easily peelable thermophilic digestion polypropylene films, are related to polymeric packaging material technical field, including extexine, middle layer and hot sealing layer；Film heat sealability prepared by the present invention is good, and film seal intensity reaches 5N/15mm-8N/15mm, and heat-sealing window is wide, seals easily peelable.Consumer, especially old man and children is facilitated to use.
Description
Technical field
The invention belongs to polymeric packaging material technical fields, and in particular to a kind of easily peelable thermophilic digestion polypropylene is thin
Film.
Background technique
Currently, food especially facilitates delicatessen using packaged with plastic container, it is light with its, at low cost, convenient for storage and
The advantages, the increasingly concern by market such as transport, but the joint filling material as packaged with plastic container does not need only to have well
Heat sealability, to ensure sealing-strength, and to be easily peeled off, convenient for open sealing, facilitate consumer to use.In addition, also
High-temperature cooking performance is needed to have, sterilizing is convenient for.
The food packaging plastic cup such as jelly, milk, soya-bean milk, fast-food lunch-box that market is sold, box class container, it is generally existing
Sealing film and cup, box, which are shut, is not easy the problem of opening, and brings inconvenience to consumer's use.Meanwhile this kind of product exists
Under 121 DEG C of boilings, 30 minutes sterilization conditions, sealing is easily broken, or even is fallen off.Current published technology, such as Chinese patent text
The disclosed openable cover film and its manufacturing method with high-temperature resistant polypropylene cup material function of CN102152577A is offered, second is mainly utilized
The incompatibility of alkene-acetate ethylene copolymer (EVA) realizes hot sealing layer easy peelability, but ethylene-vinyl acetate copolymer
(EVA) poor heat resistance, heat-sealing window is relatively narrow, is difficult to adapt to the heat sealing needs of unlike material.
It can satisfy easily peelable digestion resistant film in the market and substantially rely on import, mainly from toray import,
Also there is part from European import, but price is higher causes packing cost excessively high.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of easily peelable thermophilic digestion polypropylene film is provided.
The present invention is achieved by the following technical solutions:
A kind of easily peelable thermophilic digestion polypropylene film is manufactured using three-layer co-extruded the tape casting, including extexine, middle layer and heat
Sealing；The extexine is by the embedding disconnected copolymer polypropylene of 95wt%-99wt%, the antitack agent of 1wt%-3wt%, 0wt%-2wt%
Polyolefin elastomer is made, this layer mainly provides printing or composite performance, it is preferred that the surface of the extexine carries out at corona
Reason or plasma treatment, to promote moistened surface tension；
The middle layer is made of the embedding disconnected copolymer polypropylene of 75wt%-85wt%, the polyolefin elastomer of 15wt%-25wt%, this
Layer mainly provides thin film strength and heat resistance；
The hot sealing layer is by the polybutene of 75wt%-98wt%, the antitack agent of the copolymer polypropylene of 0wt%-21wt% and 2wt%-4wt%
It is made.
The extexine of the easily peelable thermophilic digestion polypropylene film, middle layer, the thickness ratio of hot sealing layer are as follows: 5%-
60%:10%-80%:5%-60%.
Further, the polyolefin elastomer ingredient in the extexine could alternatively be metallocene polypropylene or polyene
Olefin elastomer and polyolefin elastomer arbitrary proportion mixture.
Further, the embedding disconnected copolymer polypropylene ingredient of the middle layer could alternatively be atactic copolymerized polypropene or random
Copolymer polypropylene and embedding disconnected copolymer polypropylene arbitrary proportion mixture.
Further, the middle layer polyolefin elastomer ingredient could alternatively be metallocene polypropylene.
Further, the antitack agent be modified silica, the modified silica preparation method the following steps are included:
Salicylic acid and deionized water are uniformly mixed with the mass ratio of 1:12, are heated to 88 DEG C, with the stirring of 1250r/min revolving speed
45min obtains salicylic acid solution, then the zinc stearate of its quality 1.2% is added into salicylic acid solution, stirs 15min, then
The silica of salicylic acid solution quality 50% is added again, 15min is stirred with 1500r/min revolving speed, then add the mistake of silica quality 3.5%
Dibenzoyl is aoxidized, continues stirring 2 hours, is then filtered, cleaned using deionized water to neutrality, drying to constant weight, i.e.,
?.
Further, the easily peelable thermophilic digestion polypropylene film is resistant to 121 DEG C, 30 minutes boiling sterilization items
Part.
Further, the easily peelable thermophilic digestion polypropylene film thickness range is 30-150 μm, preferred thickness model
Enclose 30-120 μm, further preferred 50-100 μm, more preferable 40-90 μm.
Further, the easily peelable thermophilic digestion polypropylene film, suitable for the various food for needing cooking disinfection
Packaging, the sealing epiphragma especially suitable for containers such as plastic cup, boxes.
The utility model has the advantages that film heat sealability prepared by the present invention is good, film seal intensity reaches 5N/15mm -8N/15mm,
It is wide to seal window, seals easily peelable.Consumer, especially old man and children is facilitated to use.
Film of the invention is heat-resist, can be under 121 degrees Celsius, 30 minutes conditions of cooking, remaining dimensionally-stable property,
It is not stratified, indeformable, especially suitable for needing the fast food, soya-bean milk, gruel foods of cooking disinfection to pack or medical device product
Packaging.
Detailed description of the invention
Fig. 1 is that easily peelable thermophilic digestion polypropylene film and plastic containers seal peeling effect figure.
Fig. 2 is easily peelable thermophilic digestion polypropylene film structural schematic diagram.
Wherein: 1- heat-sealing release surface, the easily peelable thermophilic digestion polypropylene film of 2-, 3- plastic containers, 2.1- extexine,
2.2- middle layer, 2.3- hot sealing layer.
Specific embodiment
For ease of understanding, below with reference to embodiment, the present invention is further elaborated.The main material that the present invention chooses is lifted
Under such as, the raw material of same material can be produced by multiple commercial vendors, but not limited to this.
1# J340F South Korea Hyosung, block copolymerization polypropylene；
Without antiplastering aid and slipping agent, TM(melt point)=163 DEG C, MI=3.5；
2# RF402, South Korea Samsung Dao Daer, atactic copolymerized polypropene；
Containing antiplastering aid and slipping agent, TM(melt point)=152 DEG C, MI=4.0；
3# SP2103C, Basel, polybutene；
Without antiplastering aid and slipping agent, MI=6.5；
4# BC918CF, Borealis, atactic copolymerized polypropene；
Without antiplastering aid and slipping agent, TM(melt point)=166 DEG C, MI=3.0；
5# EG8200, Dow, polyolefin elastomer；
Without antiplastering aid and slipping agent, TM(melt point)=59 DEG C, MI=5.0；
6# EAZ-10, Mitsui, synthetic silica；
Effective component accounts for 10%；
7# CHAB 10, An Peise, synthetic silica；
Effective component accounts for 10%.
Embodiment 1
Overall film thickness is 80 microns, extexine 2.1, middle layer 2.2, hot sealing layer 2.3 account for thickness ratio be respectively 20%, 60%,
20%.Wherein, extexine selects 98wt%1# and 2wt%6# raw material to be prepared；Middle layer selects 80wt%1# and 20wt%5# raw material
It is prepared；Hot sealing layer selects 97wtt%3# and 3wt%6# raw material to be prepared.
Embodiment 2
Overall film thickness is 70 microns, and extexine: 99%1#+1%7# accounts for the 20% of thickness ratio, middle layer: 80%2# or 4#+20%
5# accounts for the 60% of thickness ratio, hot sealing layer, and: 77%3#+20%2#+3%7# accounts for the 20% of thickness ratio.
Embodiment 3
Overall film thickness be 50 microns, extexine: 95%1#+3%7#+2%5# accounts for the 10% of thickness ratio, middle layer: 85%2# or
4#+15%5# accounts for the 80% of thickness ratio, hot sealing layer, and: 98%3#+2%7# accounts for the 10% of thickness ratio.
Extexine, middle layer, the hot sealing layer mixed raw material stated is passed through into three extruder melt blendings respectively, through T shape
Die head distributor squeezes out curtain coating, quenching, thickness adjusting, sided corona treatment, correction, winding film forming, then is made through maturation process, cutting
Finished films.
According to actual requirement, extexine, middle layer, the material rate of hot sealing layer and thickness ratio can adjust.
As shown in Figure 1, easily peelable thermophilic digestion polypropylene film and plastic containers seal peeling effect figure, by will be easy-peel
It is adhered to 3 sealing face of plastic containers from thermophilic digestion polypropylene film 2, and is set in easily peelable thermophilic digestion polypropylene film one end
Heat-sealing release surface 1 is equipped with convenient for tearing sealing, the heat-sealing release surface material and easily peelable thermophilic digestion polypropylene film material
Unanimously.
Performance comparison (comparative example is ordinary polypropylene film, 80 μm of film thickness) is carried out to embodiment and comparative example.
Table 1
As can be seen from Table 1, easily peelable thermophilic digestion polypropylene film mechanical property prepared by the present invention is more superior.
Claims (9)
1. a kind of easily peelable thermophilic digestion polypropylene film, which is characterized in that including extexine, middle layer and hot sealing layer；It is described
Extexine by the embedding disconnected copolymer polypropylene of 95wt%-99wt%, the antitack agent of 1wt%-3wt%, 0wt%-2wt% polyolefin elastic
System at；The middle layer is made of the embedding disconnected copolymer polypropylene of 75wt%-85wt%, the polyolefin elastomer of 15wt%-25wt%；
The hot sealing layer is by the polybutene of 75wt%-98wt%, the antitack agent system of the copolymer polypropylene of 0wt%-21wt% and 2wt%-4wt%
At.
2. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that in the extexine
Polyolefin elastomer ingredient could alternatively be metallocene polypropylene or polyolefin elastomer and polyolefin elastomer arbitrary proportion
Mixture.
3. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the middle layer is embedding disconnected
Copolymer polypropylene ingredient could alternatively be atactic copolymerized polypropene or atactic copolymerized polypropene and embedding disconnected copolymer polypropylene is any
Scalemic thereof.
4. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the middle layer polyene
Olefin elastomer ingredient could alternatively be metallocene polypropylene.
5. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the antitack agent is to change
Property silica, the modified silica preparation method the following steps are included:
Salicylic acid and deionized water are uniformly mixed with the mass ratio of 1:12, are heated to 88 DEG C, with the stirring of 1250r/min revolving speed
45min obtains salicylic acid solution, then the zinc stearate of its quality 1.2% is added into salicylic acid solution, stirs 15min, then
The silica of salicylic acid solution quality 50% is added again, 15min is stirred with 1500r/min revolving speed, then add the mistake of silica quality 3.5%
Dibenzoyl is aoxidized, continues stirring 2 hours, is then filtered, cleaned using deionized water to neutrality, drying to constant weight, i.e.,
?.
6. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the easily peelable height
Warm boiling polypropylene film is resistant to 121 DEG C, 30 minutes boiling sterilization conditions.
7. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the easily peelable height
Warm boiling polypropylene film thickness range is 30-150 μm.
8. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the easily peelable height
Warm boiling polypropylene film thickness range is 50-100 μm.
9. a kind of easily peelable thermophilic digestion polypropylene film as described in claim 1, which is characterized in that the easily peelable height
Warm boiling polypropylene film, suitable for the various food packagings for needing cooking disinfection, especially suitable for containers such as plastic cup, boxes
Seal epiphragma.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104503.8A CN109397814A (en) | 2018-09-21 | 2018-09-21 | A kind of easily peelable thermophilic digestion polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104503.8A CN109397814A (en) | 2018-09-21 | 2018-09-21 | A kind of easily peelable thermophilic digestion polypropylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109397814A true CN109397814A (en) | 2019-03-01 |
Family
ID=65466061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811104503.8A Pending CN109397814A (en) | 2018-09-21 | 2018-09-21 | A kind of easily peelable thermophilic digestion polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109397814A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757925A (en) * | 2019-10-09 | 2020-02-07 | 安徽国风塑业股份有限公司 | BOPP film for high-temperature cooking compounding and preparation method thereof |
| CN115855808A (en) * | 2023-02-20 | 2023-03-28 | 浙江金石包装有限公司 | Detection method of PP cup boiling-resistant sealing forming film for pet food packaging |
-
2018
- 2018-09-21 CN CN201811104503.8A patent/CN109397814A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757925A (en) * | 2019-10-09 | 2020-02-07 | 安徽国风塑业股份有限公司 | BOPP film for high-temperature cooking compounding and preparation method thereof |
| CN115855808A (en) * | 2023-02-20 | 2023-03-28 | 浙江金石包装有限公司 | Detection method of PP cup boiling-resistant sealing forming film for pet food packaging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190301 |
|
| WD01 | Invention patent application deemed withdrawn after publication |