CN101830086A - New composite film - Google Patents
New composite film Download PDFInfo
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- CN101830086A CN101830086A CN 201010186484 CN201010186484A CN101830086A CN 101830086 A CN101830086 A CN 101830086A CN 201010186484 CN201010186484 CN 201010186484 CN 201010186484 A CN201010186484 A CN 201010186484A CN 101830086 A CN101830086 A CN 101830086A
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Abstract
The invention discloses a novel composite film. The composite film consists of an upper outer layer, a lower outer layer and a middle core layer, wherein the core layer and the outer layers are compounded into a whole by adhesive. The outer layer can be in a single layer structure, a double-layer structure or a multi-layer structure which consists of more than two layers of single film. The core layer can be in a single layer structure, a double-layer structure or a multi-layer structure which consists of more than two layers of single film. The core layer is made of polyethylene glycol terephthalate PET has the density of 1.395g/cm<3>-1.405g/cm<3> and the thickness of 10 micrometers to 50 micrometers. The outer layer is made of one of low-density polythene (LDPE), high-density polythene (HDPE) and casting polypropylene (CPP), and also can be made by mixing two or more than two of low-density polythene (LDPE), high-density polythene (HDPE), casting polypropylene (CPP) and metallocene polythene (mPE). The adhesive is one of single-component polyurethane adhesive, bicomponent polyurethane adhesive, alcohol-soluble polyurethane adhesive and water-soluble polyurethane adhesive. The overall thickness of the composite film is 25 micrometers to 150 micrometers.
Description
Technical field
The present invention relates to a kind of at aqueous gels, gluey, powdery emulsifying explosive and the suitable material packaging field of physical state.
Background technology
Present plastic products have all obtained extensive use in every field, and wherein plastics package and plastic packet product shared share on market is increasing, and particularly composite plastic flexible package has been widely used in fields such as food, medicine, chemical industry.Composite membrane is general all to be composited by two-layer or two-layer above monofilm, and packaging material adopt the welding of solder technology phase to form by the multi-disc composite membrane usually, as the composite membrane with two-layer PE layer is when welding under lower-speed state, the fusing point that welding temperature only need reach PE gets final product, in order to enhance productivity, its welding temperature also will improve accordingly when welding under fast state, otherwise can't finish welding, but PE layer common under the condition of high temperature easily is melted, thereby make sealing of packaging material have perforation not of uniform size, influence the normal use of packaging material.
Summary of the invention
Problem to be solved by this invention just provides a kind of NEW TYPE OF COMPOSITE film, and the heat-sealing temperature wide ranges also has good barrier performance, tensile strength and printing effect.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of NEW TYPE OF COMPOSITE film is characterized in that: this composite membrane has upper and lower two skins and middle sandwich layer, and compound by the binder layer between sandwich layer and the skin is one.
Further, described skin is single layer structure, double-layer structure or the sandwich construction that is made of two-layer above monofilm; Described sandwich layer is single layer structure, double-layer structure or the sandwich construction that is made of two-layer above monofilm.
Further, described skin is the double-decker that is made of two-layer monofilm, and described sandwich layer is the single layer structure that is made of one deck monofilm.
Further, described skin is the single layer structure that is made of one deck monofilm, and described sandwich layer is the sandwich construction that is made of to six layers of monofilm two-layer.
Further, described skin is the sandwich construction that is made of to six layers of monofilm two-layer, and described sandwich layer is the sandwich construction that is made of to six layers of monofilm two-layer.
Further, described sandwich layer is made by polyethylene terephtalate, and sandwich layer density is 1.395g/cm
3～1.405g/cm
3, thickness is 10 μ m～50 μ m.
Further, the binder in the described binder layer is a kind of in monocomponent polyurethane binder, dual-component polyurethane binder, ethanol-soluble type polyurethane binder, the soluble polyurethane binder.
Further, the integral thickness of described composite membrane is 25 μ m～150 μ m.
Further, described two skins are to be made by a kind of material among low density polyethylene, high density polyethylene, the cast polypropylene CPP.
Further, described two skins are to be mixed and made into by two or more material among low density polyethylene, high density polyethylene, cast polypropylene CPP, the metallocene PE mPE.
Beneficial effect of the present invention:
Low density polyethylene density is about 0.920g/cm3,130 ℃～145 ℃ of fusing points, and the erosion of the most of soda acids of ability, water imbibition is little, still can keep flexibility when low temperature, the electrical insulating property height;
The high density polyethylene fusing point is about 130 ℃, and relative density is 0.941g/cm3～0.960g/cm3.It has good hear resistance and cold resistance, and chemical stability is good, also has higher rigidity and toughness, and mechanical strength is good; Dielectric properties, environmental stress crack resistance are also better;
Cast polypropylene CPP has good heat sealability, and oil resistivity, air-tightness are better, and heat seal strength is higher;
Metallocene PE mPE has lower fusing point and tangible melting zone, and, can be used for producing heavily packaging bag, dustbin liner, packaging for foodstuff, oriented film etc. obviously being better than conventional polyethylene aspect toughness, transparency, thermal viscosity, heat-sealing temperature, the low smell etc.;
And of paramount importance PET sandwich layer has the good mechanical performance, and impact strength is 3～5 times of other films, and folding resistance is good, has good high-and low-temperature resistance performance, gas and vapor permeability are low, and good choke, water, oil and peculiar smell performance are arranged, and its fusing point is at 230 ℃～260 ℃; Pet layer has been arranged as sandwich layer, can satisfy the welding fusion of composite membrane under the high-speed and high-temperature state, the heat-sealing temperature scope strengthens, and has improved the working (machining) efficiency of packaging bag; By the combination of multiple thermoplastic, can make composite membrane choose different materials manufacturing in addition, to obtain better mechanical performance according to different environments for use.
Description of drawings
Fig. 1 is the horizontal cross-section structure of composite membrane embodiment one of the present invention;
Fig. 2 is the horizontal cross-section structure of composite membrane embodiment two of the present invention;
Fig. 3 is the horizontal cross-section structure of composite membrane embodiment three of the present invention;
Fig. 4 is the horizontal cross-section structure of composite membrane embodiment four of the present invention;
Fig. 5 is the horizontal cross-section structure of composite membrane embodiment five of the present invention;
Fig. 6 is the horizontal cross-section structure of composite membrane embodiment six of the present invention.
The specific embodiment
This practical a kind of NEW TYPE OF COMPOSITE film that provides has upper and lower two skins 1 and middle sandwich layer 3, and passing through binder layer 2 between the sandwich layer 3 and outer 1 compound is one.Described outer 1 both can be single layer structure or double-layer structure, also can be the sandwich construction that is made of two-layer above monofilm; Same, described sandwich layer 3 both can be single layer structure or double-layer structure, also can be the sandwich construction that is made of two-layer above monofilm.
Embodiment one: as shown in Figure 1, outer 1 single layer structure that adopts one deck monofilm to constitute, sandwich layer 3 equally also adopts single layer structure, and this is the most basic a kind of structure of composite membrane.
Embodiment two: as shown in Figure 2, outer 1 double-decker that adopts two-layer monofilm to constitute, sandwich layer 3 then is the single layer structure that is made of one deck monofilm.
Embodiment three: as shown in Figure 3, outer 1 is the single layer structure that one deck monofilm constitutes, and sandwich layer 3 then is the double-decker that two-layer monofilm constitutes.
Embodiment four: as shown in Figure 4, outer 1 is the single layer structure that one deck monofilm constitutes, the sandwich construction that sandwich layer 3 adopts four monofilms to constitute.
Embodiment five: as shown in Figure 5, outer 1 sandwich construction that adopts three layers of monofilm to constitute, sandwich layer 3 adopts single layer structure.
Embodiment six, as shown in Figure 6, and outer 1 sandwich construction that adopts three layers of monofilm to constitute, the sandwich construction that sandwich layer 3 adopts five layers of monofilm to constitute.
But structure of composite membrane of the present invention not only is confined to the foregoing description, also has other multiple structures, does not do detailed description at this, but only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Outer 1 can adopt the dry type complex method with sandwich layer 3, adopts other laminating methods also to be fine certainly, and wherein sandwich layer 3 is made by polyethylene terephtalate, and sandwich layer 3 density are 1.395g/cm
3～1.405g/cm
3, thickness is 10 μ m～50 μ m.Binder in the binder layer 2 is selected a kind of in monocomponent polyurethane binder, dual-component polyurethane binder, ethanol-soluble type polyurethane binder, the soluble polyurethane binder for use.The integral thickness of composite membrane is at 25 μ m～150 μ m, and above-mentioned parameter only is a kind of preferred version certainly, does not limit practical range of the present invention.
For outer 1 material, the present invention has multiple choices, both can select a kind of material among low density polyethylene, high density polyethylene, the cast polypropylene CPP to make; Also can select two or more material among low density polyethylene, high density polyethylene, cast polypropylene CPP, the metallocene PE mPE to be mixed and made into.By the combination of above-mentioned multiple thermoplastic, can make composite membrane choose different materials manufacturing, to obtain better serviceability according to different environments for use.In sum, composite membrane provided by the present invention has been realized the purpose that heat-sealing temperature wide ranges, barrier property, tensile strength and printing effect significantly improve.
Claims (10)
1. NEW TYPE OF COMPOSITE film is characterized in that: this composite membrane has upper and lower two skins (1) and middle sandwich layer (3), and passing through binder layer (2) compound between sandwich layer (3) and outer (1) is one.
2. a kind of NEW TYPE OF COMPOSITE film according to claim 1 is characterized in that: described skin (1) is single layer structure, double-layer structure or the sandwich construction that is made of two-layer above monofilm; Described sandwich layer (3) is single layer structure, double-layer structure or the sandwich construction that is made of two-layer above monofilm.
3. a kind of NEW TYPE OF COMPOSITE film according to claim 2 is characterized in that: described skin (1) is the double-decker that is made of two-layer monofilm, and described sandwich layer (3) is the single layer structure that is made of one deck monofilm.
4. a kind of NEW TYPE OF COMPOSITE film according to claim 2 is characterized in that: described skin (1) is the single layer structure that is made of one deck monofilm, and described sandwich layer (3) is the sandwich construction that is made of to six layers of monofilm two-layer.
5. a kind of NEW TYPE OF COMPOSITE film according to claim 2 is characterized in that: described skin (1) is the sandwich construction that is made of to six layers of monofilm two-layer, and described sandwich layer (3) is the sandwich construction that is made of to six layers of monofilm two-layer.
6. a kind of NEW TYPE OF COMPOSITE film according to claim 1 and 2 is characterized in that: described sandwich layer (3) is made by polyethylene terephtalate, and sandwich layer (3) density is 1.395g/cm
3～1.405g/cm
3, thickness is 10 μ m～50 μ m.
7. a kind of NEW TYPE OF COMPOSITE film according to claim 1 and 2 is characterized in that: the binder in the described binder layer (2) is a kind of in monocomponent polyurethane binder, dual-component polyurethane binder, ethanol-soluble type polyurethane binder, the soluble polyurethane binder.
8. a kind of NEW TYPE OF COMPOSITE film according to claim 1 and 2 is characterized in that: the integral thickness of described composite membrane is 25 μ m～150 μ m.
9. a kind of NEW TYPE OF COMPOSITE film according to claim 1 and 2 is characterized in that: described two skins (1) are to be made by a kind of material among low density polyethylene, high density polyethylene, the cast polypropylene CPP.
10. a kind of NEW TYPE OF COMPOSITE film according to claim 1 and 2 is characterized in that: described two skins (1) are to be mixed and made into by two or more material among low density polyethylene, high density polyethylene, cast polypropylene CPP, the metallocene PE mPE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186484 CN101830086A (en) | 2010-05-31 | 2010-05-31 | New composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186484 CN101830086A (en) | 2010-05-31 | 2010-05-31 | New composite film |
Publications (1)
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|---|---|
| CN101830086A true CN101830086A (en) | 2010-09-15 |
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| CN 201010186484 Pending CN101830086A (en) | 2010-05-31 | 2010-05-31 | New composite film |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072357A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | High-temperature resistant and corrosion resistant composite membrane |
| CN104960766A (en) * | 2015-06-17 | 2015-10-07 | 浙江长兴紫鑫科技有限公司 | Satchel charge packing film and preparation method thereof |
| CN105034521A (en) * | 2015-07-07 | 2015-11-11 | 浙江新高包装有限公司 | Composite membrane material for industrial explosive package |
| CN109808192A (en) * | 2017-11-21 | 2019-05-28 | 汕头市昂斯鞋材有限公司 | A kind of veined paper preparation method with laser dark line |
| CN113524845A (en) * | 2021-08-11 | 2021-10-22 | 广东骊虹包装有限公司 | Drinking water packaging film and preparation method thereof |
| CN113910730A (en) * | 2021-10-13 | 2022-01-11 | 苏州康乐兴电子有限公司 | Preparation method of composite plastic |
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| JPH10264333A (en) * | 1997-03-26 | 1998-10-06 | Kyodo Shiko Kk | Laminate film, its manufacture, bag body using the same, and bag-charged body |
| CN101130290A (en) * | 2006-04-05 | 2008-02-27 | 阿兹代尔公司 | Lightweight thermoplastic sheets including reinforcing skins |
| CN101713838A (en) * | 2008-10-03 | 2010-05-26 | 住友化学株式会社 | Polarizing plate and liquid crystal display |
| CN201761116U (en) * | 2010-05-31 | 2011-03-16 | 徐建学 | Novel composite membrane |
-
2010
- 2010-05-31 CN CN 201010186484 patent/CN101830086A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10264333A (en) * | 1997-03-26 | 1998-10-06 | Kyodo Shiko Kk | Laminate film, its manufacture, bag body using the same, and bag-charged body |
| CN101130290A (en) * | 2006-04-05 | 2008-02-27 | 阿兹代尔公司 | Lightweight thermoplastic sheets including reinforcing skins |
| CN101713838A (en) * | 2008-10-03 | 2010-05-26 | 住友化学株式会社 | Polarizing plate and liquid crystal display |
| CN201761116U (en) * | 2010-05-31 | 2011-03-16 | 徐建学 | Novel composite membrane |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072357A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | High-temperature resistant and corrosion resistant composite membrane |
| CN104960766A (en) * | 2015-06-17 | 2015-10-07 | 浙江长兴紫鑫科技有限公司 | Satchel charge packing film and preparation method thereof |
| CN105034521A (en) * | 2015-07-07 | 2015-11-11 | 浙江新高包装有限公司 | Composite membrane material for industrial explosive package |
| CN109808192A (en) * | 2017-11-21 | 2019-05-28 | 汕头市昂斯鞋材有限公司 | A kind of veined paper preparation method with laser dark line |
| CN113524845A (en) * | 2021-08-11 | 2021-10-22 | 广东骊虹包装有限公司 | Drinking water packaging film and preparation method thereof |
| CN113910730A (en) * | 2021-10-13 | 2022-01-11 | 苏州康乐兴电子有限公司 | Preparation method of composite plastic |
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Application publication date: 20100915 |