CN1616314A - Cloth packaging film - Google Patents
Cloth packaging film Download PDFInfo
- Publication number
- CN1616314A CN1616314A CN 200410084460 CN200410084460A CN1616314A CN 1616314 A CN1616314 A CN 1616314A CN 200410084460 CN200410084460 CN 200410084460 CN 200410084460 A CN200410084460 A CN 200410084460A CN 1616314 A CN1616314 A CN 1616314A
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- China
- Prior art keywords
- packaging film
- cloth packaging
- polyethylene resin
- hot sealing
- sealing layer
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Abstract
The present invention relates to cloth packaging film, and is especially cloth packaging film suitable for use in automatic packing machine. The cloth packaging film includes surface layer and heat sealed layer adhered successively. The surface layer is made of heat resistant low viscosity polyethylene resin, and preferably the mixture of medium density polyethylene resin in 20-40 wt% and linear polyethylene resin in 60-80 wt%. The cloth packaging film may be prepared through known film blowing process and through once multiple layer co-extrusion. It has excellent heat sealing performance, high packing strength, no overhigh viscosity in high speed packing machine, no adhesion to cutter. The cloth packaging film results in simple packing process, fast speed and low production cost, and may be used also in other high speed automatic packing machine.
Description
Technical field
The present invention relates to a kind of cloth packaging film, particularly relate to a kind of cloth packaging film that is applicable to that high speed, automatic packaging machinery use.
Background technology
At present, the cloth packing has two kinds of methods, and a kind of is hand-filling, lower to the requirements for quality of film, uses general thin, gets final product with adhesive tape bonding.Another kind is to use at a high speed, automatic packaging machinery, requires the film strength height, and heat sealability is good, not sticking cutter, and heat-shrinkable is good, can realize scale, produce in enormous quantities and use.Along with science and technology and constant development of economy, large-scale textile enterprise has all proposed requirements at the higher level also in continuous development to cloth packing speed and film performance.Present cloth packing film, when on the automatic high speed package packing machine, using, low, the sticking cutter of heat sealability intensity, film strength is poor simultaneously, causes package speed slow, can not meet modern enterprise scale, requirement of mass production.
Therefore designing and developing a kind of cloth packaging film that can be adapted to High-Speed Automatic package packing machine use, is the technical matters that those skilled in the art press for solution.
Summary of the invention
Technical matters to be solved by this invention is to disclose a kind of cloth packaging film, to overcome the above-mentioned defective that prior art exists.
The technical scheme of technical solution problem of the present invention is as follows:
A kind of cloth packaging film comprises superficial layer adhered to one another successively and hot sealing layer.
Superficial layer is selected for use has the poly-vinyl resin that heat-resisting quantity is good, viscosity is low, and preferably adopting percentage by weight is 20～40% medium density polyethylene resin, with the compound of 60～80% linear polyethylene resin;
Preferred employing density is 0.930～0.940 medium density polyethylene resin;
Preferred employing mol wt is 150000～200000 linear polyethylene resin;
Hot sealing layer is to adopt extraordinary resin with strong polarity, preferably adopts the compound of the low density polyethylene (LDPE) of 30～40% metallocene catalysed polyethylene and 60～70%;
Preferentially selecting mol wt for use is the metallocene catalysed polyethylene of 160000-180000;
The density of said low density polyethylene (LDPE) is 0.921～0.925;
According to optimized technical scheme of the present invention: hot sealing layer also comprises an amount of ethylene-acrylic acid interpolymer or/and the vinyl acetate ethenyl copolymer;
The ethylene-acrylic acid interpolymer is or/and the addition of vinyl acetate ethenyl copolymer is 0.5～5% of a total weight.
Above-mentioned cloth packaging film can adopt blown film method well known in the art to be prepared, through an extrusion molding of multi-layer co-extruded technology.
Cloth packaging film of the present invention adopts the JIS-1707 standard to detect, and meets quality loop.
Cloth packaging film of the present invention has good heat sealability, packaging intensity concurrently, does not show undue viscosity again on high-speed packaging machinery, the fault of cutter can not stick together, so not only make the simple of technology of the package change, and speed is faster, has reduced productive costs.This film also can be promoted and be applicable to other relevant High-Speed Automatic package packing machinies.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Referring to Fig. 1, cloth packaging film of the present invention comprises superficial layer adhered to one another successively 1 and hot sealing layer 2, and the thickness of superficial layer 1 is 0.010～0.015mm, and the thickness of hot sealing layer 2 is 0.015～0.020mm.
Embodiment 1
It is that 0.931 medium density polyethylene resin and mol wt are the compound of 160000 linear polyethylene resin that superficial layer is selected density for use, and the percentage by weight of medium density polyethylene resin is 75%, and the percentage by weight of linear polyethylene resin is 25%.
Mol wt 160000 metallocene catalysed polyethylene of hot sealing layer employing 30% and 70% density are 0.921 poly compound;
Adopt blown film method well known in the art to be prepared, through an extrusion molding of multi-layer co-extruded technology, obtain the said cloth packaging film of the present invention, as Fig. 1, cloth packaging film of the present invention comprises superficial layer adhered to one another successively 1 and hot sealing layer 2.
The thickness of superficial layer 1 is 0.010mm, and the thickness of hot sealing layer 2 is 0.015mm.
Adopt the JIS-1707 standard to detect, testing result is as follows:
Pulling strengrth: 23.1MPa, breaking elongation: 460%,
Heat seal strength: 12N/cm
It is that 0.934 medium density polyethylene resin and mol wt are the compound of 180000 linear polyethylene resin that superficial layer is selected density for use, and the percentage by weight of medium density polyethylene resin is 68%, and the percentage by weight of linear polyethylene resin is 32%.
It is that the density of 180000 metallocene catalysed polyethylene and 60% is 0.921 poly compound that hot sealing layer adopt to adopt 40% mol wt;
Hot sealing layer comprises that also addition is 2.5% an ethylene-acrylic acid interpolymer of total weight.
Adopt blown film method well known in the art to be prepared, through an extrusion molding of multi-layer co-extruded technology, obtain the said cloth packaging film of the present invention, as Fig. 1, cloth packaging film of the present invention comprises superficial layer adhered to one another successively 1 and hot sealing layer 2.
The thickness of superficial layer 1 is 0.012mm, and the thickness of hot sealing layer 2 is 0.020mm.
Adopt the JIS-1707 standard to detect, testing result is as follows:
Pulling strengrth: 25.3MPa, breaking elongation: 430%,
Heat seal strength: 11N/cm.
Claims (7)
1. a cloth packaging film is characterized in that, comprises superficial layer adhered to one another successively and hot sealing layer, and superficial layer is selected poly-vinyl resin for use, and hot sealing layer adopts the resin with strong polarity.
2. cloth packaging film according to claim 1 is characterized in that, it is 20～40% medium density polyethylene resin that described superficial layer preferably adopts percentage by weight, with the compound of 60～80% linear polyethylene resin; Described hot sealing layer preferably adopts the compound of the low density polyethylene (LDPE) of 30～40% metallocene catalysed polyethylene and 60～70%.
3. cloth packaging film according to claim 1 and 2, it is characterized in that, it is 0.930～0.940 medium density polyethylene resin that described medium density polyethylene resin preferably adopts density, and it is 150000～200000 linear polyethylene resin that described linear polyethylene resin preferably adopts mol wt; Preferred employing mol wt is 160000～180000 metallocene catalysed polyethylene, and the density of said low density polyethylene (LDPE) is 0.921～0.925.
4. cloth packaging film according to claim 2 is characterized in that, described hot sealing layer also comprises the ethylene-acrylic acid interpolymer or/and the vinyl acetate ethenyl copolymer.
5. cloth packaging film according to claim 4 is characterized in that, described ethylene-acrylic acid interpolymer is or/and the addition of vinyl acetate ethenyl copolymer is 0.5～5% of a total weight.
6. according to claim 1,2,4 or 5 described cloth packaging films, it is characterized in that the thickness of superficial layer is 0.010～0.15mm, the thickness of hot sealing layer is 0.015～0.020mm.
7. cloth packaging film according to claim 3 is characterized in that, the thickness of superficial layer is 0.010～0.15mm, and the thickness of hot sealing layer is 0.015～0.020mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084460 CN1616314A (en) | 2004-11-23 | 2004-11-23 | Cloth packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084460 CN1616314A (en) | 2004-11-23 | 2004-11-23 | Cloth packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1616314A true CN1616314A (en) | 2005-05-18 |
Family
ID=34765893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410084460 Pending CN1616314A (en) | 2004-11-23 | 2004-11-23 | Cloth packaging film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1616314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388005A (en) * | 2009-02-02 | 2015-03-04 | 屈德加薄膜产品股份有限公司 | Method of wetting substrate using films |
| CN107443847A (en) * | 2017-09-14 | 2017-12-08 | 安徽蓝韵包装有限公司 | Food packaging no white casse is without floating object polyethylene film and preparation method thereof |
-
2004
- 2004-11-23 CN CN 200410084460 patent/CN1616314A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388005A (en) * | 2009-02-02 | 2015-03-04 | 屈德加薄膜产品股份有限公司 | Method of wetting substrate using films |
| CN104388005B (en) * | 2009-02-02 | 2016-05-18 | 屈德加薄膜产品股份有限公司 | Infiltrate the method for base material with film |
| CN107443847A (en) * | 2017-09-14 | 2017-12-08 | 安徽蓝韵包装有限公司 | Food packaging no white casse is without floating object polyethylene film and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |