CN102554124A - Ethylene vinyl acetate (EVA) vacuum cast film - Google Patents
Ethylene vinyl acetate (EVA) vacuum cast film Download PDFInfo
- Publication number
- CN102554124A CN102554124A CN2012100841258A CN201210084125A CN102554124A CN 102554124 A CN102554124 A CN 102554124A CN 2012100841258 A CN2012100841258 A CN 2012100841258A CN 201210084125 A CN201210084125 A CN 201210084125A CN 102554124 A CN102554124 A CN 102554124A
- Authority
- CN
- China
- Prior art keywords
- eva
- vinyl acetate
- ethylene vinyl
- cast film
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005038 ethylene vinyl acetate Substances 0.000 title abstract 5
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims abstract description 7
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 6
- 239000004576 sand Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 abstract 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 244000035744 Hura crepitans Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a pearly-lustre ethylene vinyl acetate (EVA) film, which is prepared by mixing 98 to 99.9 percent of EVA (E180F) and 0.1 to 2 percent of octadeceneamide, wherein the VA content in the EVA (E180F) is 18 percent. An EVA vacuum cast film has high extensibility, and is not subjected to springback and not adhesive; furthermore, sand can be recycled; the utilization rate is up to 95 percent; and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of cast film, particularly a kind of EVA vacuum pressing and casting film.
Background technology
The negative pressure of vacuum moulding is claimed in the moulding of V method again, and vacuum sealed molding is the physics formative method that a kind of novel environment friendly property dry sand solidifies.This technology is having overlay film moulding on the wooden model of passage and air extractor with plastic sheeting through heating; After placing sandbox, insert thin dry sand and make molding sand, vibration ramming also is covered with notacoria; Rely on gas in the vavuum pump extraction type; Cause sand mold inner chamber vacuum, make sand mold inner chamber and atmospheric pressure form pressure reduction, make dry sand obtain solidifying without any need for binding agent.Form required die cavity.
Traditional V method moulding adopt the EVA raw material to make, and acetic acid content is high more among the EVA, and the tensile property of film is good more, but simultaneously also easier to be sticking glutinous, and cracky gas leakage destroys the moulding of vacuum.How to make not resilience and sticking glutinous functional requirement after open and flat extensibility of film and the moulding reach the optimum efficiency that moulding is used simultaneously, need find out a new preparation approach.
Summary of the invention
In order to overcome the above-mentioned weak point that exists in the prior art, the object of the present invention is to provide a kind of EVA vacuum pressing and casting film, it has good ductility, and resilience is not glued stickiness again.
In order to reach above-mentioned purpose, the present invention adopts following concrete technical scheme: a kind of pearly-lustre EVA film is characterized in that: contain EVA (E180F), oleamide, it is following that each organizes the quality ratio range:
EVA（E180F） 98%～99.9%
Oleamide 0.1%～2%.
The VA content of said EVA (E180F) is 18%.
Compared with prior art, the present invention has following outstanding advantage and effect: the EVA vacuum pressing and casting film that the present invention prepares has good ductility, not resilience; Not sticking again stickiness; And sand can recycle again, and utilization rate reaches 95%, reduces production costs.
The specific embodiment
Mode through embodiment further specifies the present invention below, therefore the present invention is not limit
Among described scope of embodiments.
Embodiment 1
Get mass percent and contain a kind of EVA vacuum pressing and casting film that is mixed with after 98.2%EVA (E180F), the mixing of 1.8% oleamide, the VA content of said EVA (E180F) is 18%.
Embodiment 2
Get mass percent and contain a kind of EVA vacuum pressing and casting film that is mixed with after 99.1%EVA (E180F), the mixing of 0.9% oleamide, the VA content of said EVA (E180F) is 18%.
Claims (2)
1. pearly-lustre EVA film, it is characterized in that: contain EVA (E180F), oleamide, it is following that each organizes the quality ratio range:
EVA（E180F） 98%～99.9%
Oleamide 0.1%～2%.
2. according to the said a kind of pearly-lustre EVA film of claim 1, it is characterized in that: the VA content of said EVA (E180F) is 18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100841258A CN102554124A (en) | 2012-03-28 | 2012-03-28 | Ethylene vinyl acetate (EVA) vacuum cast film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100841258A CN102554124A (en) | 2012-03-28 | 2012-03-28 | Ethylene vinyl acetate (EVA) vacuum cast film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102554124A true CN102554124A (en) | 2012-07-11 |
Family
ID=46401490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100841258A Pending CN102554124A (en) | 2012-03-28 | 2012-03-28 | Ethylene vinyl acetate (EVA) vacuum cast film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102554124A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722274A (en) * | 2009-12-15 | 2010-06-09 | 武汉恒德科技有限公司 | Three-layer ethylene-vinyl acetate copolymer negative pressure casting film and preparation method thereof |
-
2012
- 2012-03-28 CN CN2012100841258A patent/CN102554124A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722274A (en) * | 2009-12-15 | 2010-06-09 | 武汉恒德科技有限公司 | Three-layer ethylene-vinyl acetate copolymer negative pressure casting film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 姜不居: "《铸造手册》", 28 February 2011 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |