CN102059837A - Co-extrusion self-adhesive polyethylene film and production process thereof - Google Patents
Co-extrusion self-adhesive polyethylene film and production process thereof Download PDFInfo
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- CN102059837A CN102059837A CN2009101939529A CN200910193952A CN102059837A CN 102059837 A CN102059837 A CN 102059837A CN 2009101939529 A CN2009101939529 A CN 2009101939529A CN 200910193952 A CN200910193952 A CN 200910193952A CN 102059837 A CN102059837 A CN 102059837A
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Abstract
The invention relates to a production process of a co-extrusion self-adhesive polyethylene film, comprising the following steps: 1) preparing macromolecule master batch, namely mixing a macromolecule material and polyethylene for pelleting; 2) drying by a drying machine; 3) uniformly mixing and stirring the polyethylene and separating material silicon dioxide by a mixer based on a ratio; 4) proportioning a three-layer material by virtue of a hopper, namely mixing by film blowing; 5) heating to 210-240 DEG C in one step; 6) melting master batch in a screw, wherein the material enters into the screw to be melted into an aqueous state; 7) carrying out film blowing by a film blowing machine; and 8) obtaining the finished product. The process has the advantages that the harm of a common gummed polyethylene film is avoided, the energy is saved, the cost is reduced, the damage of gum water to industrial products is avoided and the resistance to high temperature of 130 DEG C is achieved. The adsorption force of the film in the process is 400g/25 cm<2>, the separating force is extremely high, the cost is low, and the film is environment-friendly and can resist to high temperature of 130 DEG C, thus the film can be widely applicable to surface protection of industrial products.
Description
Technical field
The present invention relates to a kind of surface protective film, refer in particular to a kind of co-extrusion self-adhesion polyethylene film and production technology thereof.
Background technology
The existing diaphragm that is extensive use of industry, mainly be to be coated on the surface of general thin with glue, as easy as rolling off a log glue in use remains on the surface of protected product, the value of product that caused lifting not, also have because the product of industrial shipment has long haul transportation and marine shipping, temperature all reaches 70 ℃, more is easy to generate residually, does not protect industrial products; In addition, because all can there be the composition of toluene traditional gluing polyethylene film glue the inside, really environmental protection is so environmental pollution is serious.
Therefore, industry is badly in need of occurring a kind of co-extrusion self-adhesion polyethylene film and production technology thereof that can address the above problem.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of off-type force is fabulous, and cost is low, the co-extrusion self-adhesion polyethylene film that environmental protection can be high temperature resistant.The present invention is achieved through the following technical solutions:
A kind of co-extrusion self-adhesion polyethylene film of the present invention comprises that the polymer material layer, polyethylene layer, the polyethylene that are arranged in order add silicon dioxide layer; Wherein, it is 8.8%-15.2% that described macromolecular material accounts for percentage by weight, and it is 84%-90% that polyethylene accounts for percentage by weight, and the silica comprises percentage by weight is 0.8%-1.2%.
As preferably, described macromolecular material is a thermoplastic elastomer.
It is fabulous that another technical problem that the present invention will solve provides a kind of off-type force, and cost is low, the production technology of the co-extrusion self-adhesion polyethylene film that environmental protection can be high temperature resistant.The present invention is achieved through the following technical solutions:
The production technology of a kind of co-extrusion self-adhesion polyethylene film of the present invention comprises following technology and step:
1). the macromolecule masterbatch is made material, is with macromolecular material and polyethylene mixing granulation, and prilling temperature is between 220 ℃-240 ℃, and the time is 28-32 minute;
2). drying machine carries out drying;
3). the spice machine is pressed the even mixing of proportioning with polyethylene and separated type material silica, and the time is 2-4 minute;
4). carry out the proportioning of three layered materials by hopper, i.e. the blown film batching; Described three layered materials are adhesion coating, intermediate layer, superficial layer, and its percentage by weight is 12%: 60%: 28%; Time is 4-6 minute;
5). disposable being warmed up between 210 to 240, the time is 3-5 hour;
6). masterbatch enters screw rod and melts, and waits material to enter screw rod and dissolves near watery, about 50-70 second;
7). inflation film manufacturing machine blown film, one section 180 ℃, two sections 230 ℃, three sections 220 ℃, four sections 210 ℃, five sections 235 ℃;
8). finish finished product.
As preferably, finish and also comprise before the finished product and carry out the test of finished product absorption affinity, off-type force test, high temperature test.
A kind of co-extrusion self-adhesion polyethylene film of the present invention and production technology thereof overcome the harm of common gluing polyethylene film, and energy savings reduces cost, and solve the destruction of glue to industrial products, 130 ℃ of high temperature of its ability, and can replace the gluing polyethylene film again.Because this film its absorption affinity under this kind technology is 400g/25cm
2, and off-type force is fabulous, and cost is low, and environmental protection can high temperature resistant 130 ℃, can be widely used in the surface protection of industrial products.
The specific embodiment
A kind of co-extrusion self-adhesion polyethylene film of the present invention comprises that the polymer material layer, polyethylene layer, the polyethylene that are arranged in order add silicon dioxide layer.Through an operation is the three layers of extruding and the straight formings together that mix each other.
Embodiment one, and wherein, it is 8.8% that described macromolecular material accounts for percentage by weight, and it is 90% that polyethylene accounts for percentage by weight, and the silica comprises percentage by weight is 1.2%.Described macromolecular material is thermoplastic elastomer (POEdow8150).
Embodiment two, and wherein, it is 12% that described macromolecular material accounts for percentage by weight, and it is 87% that polyethylene accounts for percentage by weight, and the silica comprises percentage by weight is 1%.Described macromolecular material is thermoplastic elastomer (POEdow8150).
Embodiment two, and wherein, it is 15.2% that described macromolecular material accounts for percentage by weight, and it is 84% that polyethylene accounts for percentage by weight, and the silica comprises percentage by weight is 0.8%.Described macromolecular material is thermoplastic elastomer (POEdow8150).
The production technology of a kind of co-extrusion self-adhesion polyethylene film of the present invention comprises following technology and step:
1). the macromolecule masterbatch is made material, is with macromolecular material and polyethylene mixing granulation, and prilling temperature is between 220 ℃-240 ℃, and to solve residual and protection product high temperature, the time is 28-32 minute; Be 30 minutes in the present embodiment.
2). drying machine carries out drying.
3). solve release problem, the spice machine is pressed the even mixing of proportioning with polyethylene and separated type material silica, and the time is 2-4 minute; Be 3 minutes in the present embodiment.
4). carry out the proportioning of three layered materials by hopper, i.e. the blown film batching; Described three layered materials are adhesion coating, intermediate layer, superficial layer, and its percentage by weight is 12%: 60%: 28%; To solve the product combination property and to reduce cost, the time is 4-6 minute; Be 5 minutes in the present embodiment.
5). disposable being warmed up between 210 to 240, the time is 3-5 hour; Be warmed up to 230 ℃ in the present embodiment, the time is 4 hours, can use for a long time then.
6). masterbatch enters screw rod and melts, and waits material to enter screw rod and dissolves near watery, about 50-70 second; Be 60 seconds in the present embodiment.
7). inflation film manufacturing machine is blown this product, one section 180 ℃, two sections 230 ℃, three sections 220 ℃, four sections 210 ℃, five sections 235 ℃.
8). the test of quality inspection finished product absorption affinity
9). the test of quality inspection finished product off-type force
10). quality inspection finished product high temperature test
11). the finished product packing warehouse-in.
Below with the present invention and like product comparison so that its property to be described:
1. cost savings 40%
Common gluing diaphragm has two operations: (1) blown film; (2) glue is coated on the common polythene film.The high absorption affinity co-extrusion of environmental protection has only operation of blown film from mucous membrane.Particularity: front blown film operation is the same, and the common coating glue film operation in back comprises the artificial electricity charge and workshop layout etc., and film per ton has more 4000 yuan/ton cost.
2. environmental-protecting performance
Common gluing diaphragm has the composition of toluene to prepare and to produce in preparation glue process, not environmental protection, and do not have the toluene composition in the high absorption affinity self-adhesion of the environmental protection co-extrusion film, definitely meet environmental protection.
3. high absorption affinity and release characteristic
The co-extrusion that the said high absorption affinity of this kind of film is countries in the world contrasts from mucous membrane, if mainly be that other co-extrusion of explanation countries in the world is accomplished 400g/cm from mucous membrane with absorption affinity
2, its superficial layer and adhesion coating can't separate, and that is to say does not have using value, equals waste product, and this kind of film then release is good, can make superficial layer and adhesion coating separately easily.So this kind of film is unique in application now.
The present invention adopts two layers of polyethylene and the other rare macromolecular material of one deck, is the three layers of extruding and the straight formings together that mix each other through an operation.Its production temperature and workshop humidity to coextrusion process all has clear and definite regulation; The selection of macromolecular material there is the assurance of its strictness; The processing that also has off-type force is science very.Industrial in the world relatively advanced Japan yet handles bad high absorption affinity from mucous membrane---and be 400g/cm
2Absorption affinity is from the surperficial release problem of mucous membrane, i.e. the release problem of superficial layer and band viscous layer, thereby can not produce this kind of product.
A kind of co-extrusion self-adhesion polyethylene film of the present invention and production technology thereof overcome the harm of common gluing polyethylene film, and energy savings reduces cost, and solve the destruction of glue to industrial products, 130 ℃ of high temperature of its ability, and can replace the gluing polyethylene film again.Because this film its absorption affinity under this kind technology is 400g/25cm
2, and off-type force is fabulous, and cost is low, and environmental protection can high temperature resistant 130 ℃, can be widely used in the surface protection of industrial products.
The foregoing description; it is an example of the present invention; be not to be used for limiting enforcement of the present invention and interest field, all equivalences of being done according to the described process for making of the present patent application scope of patent protection change and modify, and all should be included in the present patent application claim.
Claims (4)
1. a co-extrusion self-adhesion polyethylene film is characterized in that: comprise that the polymer material layer, polyethylene layer, the polyethylene that are arranged in order add silicon dioxide layer; Wherein, it is 8.8%-15.2% that described macromolecular material accounts for percentage by weight, and it is 84%-90% that polyethylene accounts for percentage by weight, and the silica comprises percentage by weight is 0.8%-1.2%.
2. co-extrusion self-adhesion polyethylene film according to claim 1 and production technology thereof is characterized in that: described macromolecular material is a thermoplastic elastomer.
3. the production technology of a co-extrusion self-adhesion polyethylene film as claimed in claim 1 is characterized in that: comprise following technology and step:
1). the macromolecule masterbatch is made material, is with macromolecular material and polyethylene mixing granulation, and prilling temperature is between 220 ℃-240 ℃, and the time is 28-32 minute;
2). drying machine carries out drying;
3). the spice machine is pressed the even mixing of proportioning with polyethylene and separated type material silica, and the time is 2-4 minute;
4). carry out the proportioning of three layered materials by hopper, i.e. the blown film batching; Described three layered materials are adhesion coating, intermediate layer, superficial layer, and its percentage by weight is 12%: 60%: 28%; Time is 4-6 minute;
5). disposable being warmed up between 210 to 240, the time is 3-5 hour;
6). masterbatch enters screw rod and melts, and waits material to enter screw rod and dissolves near watery, about 50-70 second;
7). inflation film manufacturing machine blown film, one section 180 ℃, two sections 230 ℃, three sections 220 ℃, four sections 210 ℃, five sections 235 ℃;
8). finish finished product.
4. co-extrusion self-adhesion polyethylene film according to claim 1 and production technology thereof is characterized in that: finish and also comprise before the finished product and carry out the test of finished product absorption affinity, off-type force test, high temperature test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101939529A CN102059837A (en) | 2009-11-17 | 2009-11-17 | Co-extrusion self-adhesive polyethylene film and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101939529A CN102059837A (en) | 2009-11-17 | 2009-11-17 | Co-extrusion self-adhesive polyethylene film and production process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514329A (en) * | 2011-12-05 | 2012-06-27 | 惠州宝柏包装有限公司 | Polyethylene film with resealing function and preparation method thereof |
| CN103072326A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Asymmetric high-temperature resistant self-adhesive packaging material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919899A (en) * | 2006-08-29 | 2007-02-28 | 唐新国 | One-time forming non-gelatinizing cool-adhesion protective membrane |
-
2009
- 2009-11-17 CN CN2009101939529A patent/CN102059837A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919899A (en) * | 2006-08-29 | 2007-02-28 | 唐新国 | One-time forming non-gelatinizing cool-adhesion protective membrane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514329A (en) * | 2011-12-05 | 2012-06-27 | 惠州宝柏包装有限公司 | Polyethylene film with resealing function and preparation method thereof |
| CN102514329B (en) * | 2011-12-05 | 2014-04-09 | 惠州宝柏包装有限公司 | Polyethylene film with resealing function and preparation method thereof |
| CN103072326A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Asymmetric high-temperature resistant self-adhesive packaging material |
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Application publication date: 20110518 |