CN102731726A - Preparation method of material used for nylon/propylene (PP) coextrusion composite adhesive layer - Google Patents
Preparation method of material used for nylon/propylene (PP) coextrusion composite adhesive layer Download PDFInfo
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- CN102731726A CN102731726A CN2012102474145A CN201210247414A CN102731726A CN 102731726 A CN102731726 A CN 102731726A CN 2012102474145 A CN2012102474145 A CN 2012102474145A CN 201210247414 A CN201210247414 A CN 201210247414A CN 102731726 A CN102731726 A CN 102731726A
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Abstract
The invention belongs to the field of polymeric materials and relates to a preparation method of a material used for manufacturing multilayer coextrusion composite membranes, plates, sheets and tubes and used as an adhesive for a nylon/polypropylene (PP) coextrusion composite adhesive layer. The method comprises purchasing olefin resins in the domestic market and combining two or more of the olefin resins to obtain a basic resin with the properties reaching or close to the required properties of a polypropylene adhesive resin, namely, combining 60-90% of ethylene-octene copolymer (POE) and 10-40% of random copolymerized PP by weight to obtain the basic resin, reacting the basic resin in a single screw extruder, and connecting a polar group to obtain the PP/PA (EVOH) multilayer coextrusion composite membrane (sheet). The adhesiveness, the resistance to boiling and the transparency of the PP/PA (EVOH) multilayer coextrusion composite membrane (sheet) all can reach the standards of the similar foreign products and meet the use requirements of the product packaging.
Description
Technical field: the invention belongs to polymeric material field; Relate to a kind of multi-layer co-extruded composite package, plate, sheet, pipe manufacturer of being used for; The material preparation method of bonding usefulness between nylon/PP is particularly extruded with olefin type elastomer material reaction and is used for compound adhesive linkage preparation methods between nylon/PP.
Background technology: in recent decades, the ratio that Plastic Packaging Materials replaces the Traditional Packing material constantly increases, and develops the functional plastic wrapping material of high added value energetically, has become the development trend of countries in the world Plastic Packaging Materials.The developing history of composite package is not long, but its tempo is very fast, and the kind of composite package surpasses 500 kinds both at home and abroad at present, and composite package more and more receives the favor of packaging industry and foodstuffs industry.
Multi-layer co-extruded technology directly adopts plastic pellet more than three kinds or three kinds as raw material; After making every kind of plastics fusion plastification respectively through several forcing machines; Infeed simultaneously in the secondary mouthful mould and (perhaps pass through divider; Infeed a mouthful mould after the plastics that each forcing machine is supplied with converge), pass through further processing treatment then, make multi-layer compound film.
According to investigation, multi-layer co-extruded technology is widely used in Chinese soft packaging manufacturing enterprise, has reached 76.9% utility ratio.It is compound that present multi-layer co-extruded technology adopts the xenogenesis plastic co-extrusion to go out more.Because performance differs greatly between polarity macromolecular compound and the non-polar high polymer compound; Can learn from other's strong points to offset one's weaknesses each other between the performance; Through the complementation between the layers of material performance, can make high performance laminated film, therefore multi-layer co-extruded technology is usually used in the production of high barrier laminated film.
The coextrusion recombining process is to adopt two or several forcing machines that the resin of various difference in functionalitys is melt extruded respectively, and the runner through separately converges in die head, again through inflation, together cooling combined.This technology has not only been simplified production process greatly, and materials are few, can cut down the consumption of raw materials and production cost simultaneously; Adopt the compound package material of this explained hereafter same structure can save 30% production cost than other technologies.
Typical structure of composite membrane is: main stress layer/adhesive linkage/barrier layer/adhesive linkage/hot sealing layer.Main stress layer is PP, PE etc., barrier layer be EVOH, PA, etc., hot sealing layer is need add adhesive linkage like the resin compatible difference between the adjacent layerss such as HDPE, LDPE, LLDPE, CPP.According to different purposes, process the composite package of different structure with different materials.
Multi-layer co-extruded technology is different from the compound compounding technology that waits of dry method, and it does not need earlier plastic pellet to be processed the intermediates of film like.Multi-layer co-extruded technology has been represented the direction of economy, environmental protection.
Nylon/PP coextrusion-lamination film (sheet) is because it has the performance of 121 ℃-142 ℃ of anti-boilings, and mainly being used for needs the foodstuff of packing back boiling packing, and along with the fast pace of social development, the demand of this type packing is increasing.
The binder resin that at present domestic production nylon/PP coextru-lamination adhesive linkage is used, the main binder resin that uses Japan, domestic still do not have this type of binder resin at present.
Summary of the invention: the objective of the invention is the olefine kind resin that utilizes the home market to purchase; Combination through two or more material makes it to reach or near producing the required base resin performance of Vestolen PP 7052 binder resin, and a kind of nylon/PP coextru-lamination adhesive linkage that proposes is used preparation methods.
For achieving the above object: branch art scheme of the present invention is following: a kind of nylon/PP coextru-lamination adhesive linkage is used preparation methods: it is characterized in that base resin is the combination by olefin type elastomer and random copolymerization PP, the random copolymerization PP of the olefin type elastomer of 60-90% weight percent and 10-40% weight percent; Its preparation method is: with the olefin type elastomer and the PP of said ratio; After the grafted monomer that adds initiator, the gross weight 0.8-1.5 ‰ of its gross weight 0.06-0.12% is poured the abundant mixing of stirrer into, be prepared from through two compression ratio list spiro rod reaction forcing machine granulations again.
Usually, mainly by the combination of olefin type elastomer and random copolymerization PP, wherein olefin type elastomer POE is ethylene-octene or ethylene-propylene copolymer to the said base resin of preparation method of the present invention, and POE density is at 0.86-0.90g/cm
3Scope, Vestolen PP 7052 are the PP of random copolymerization.
Material is to extrude through the two compression ratio forcing machine reactions of single screw rod behind the said mixing, and each section of forcing machine temperature is 130 ℃ of-230 ℃ of scopes.
The two compression ratio forcing machine L/D of said single screw rod >=30: 1.
Said initiator selects two 25 101 for use; Grafted monomer is selected maleic anhydride for use.
The olefine kind resin that the present invention utilizes the home market to purchase; Combination through two or more material makes it to reach or near producing the required base resin performance of Vestolen PP 7052 binder resin; Material with after this combination passes through extrusion reaction as base resin; Connect polar group and process and be used for the multi-layer co-extruded laminated film of PP/PA (EVOH), its cementability, boiling resistance, the transparency all can reach the requirement of external like product, satisfy user's request for utilization.
Embodiment:
Below in conjunction with embodiment the present invention is described in detail.
Embodiment: PP/PA (EVOH) coex composite membranes (sheet) is used the binder resin preparation method, adopts olefin type elastomer and random copolymerization PP blend, under the initiator effect, connects polar group maleic anhydride through extrusion reaction as base resin.
Above-mentioned different materials all is earlier through the abundant mixing of high-speed stirring mixer, then through L/D >=30: 1 single screw rod pair compression ratio forcing machines react, extrude, tie rod, cooling, pelletizing process.
Embodiment 1:PP/PA (EVOH) coextru-lamination is formed as follows with the binder resin raw material:
POE (ethylene-octene copolymer) 70%;
Random copolymerization PP 30%;
Two two five 101 1.5%;
Maleic anhydride 0.8%.
Embodiment 2:PP/PA (EVOH) coextru-lamination is formed as follows with the binder resin raw material:
POE elastomerics (ethene-hexene copolymer) 70%;
Random copolymerization PP 30%;
Two two five 101 1.5%;
Maleic anhydride 0.8%.
The contrast of binder resin experimental result data
| Instance | Melting index g/10min | Stripping strength is N/mm 1. | Stripping strength is N/mm 2. |
| 1 | 2.5 | 20.5 | 18.5 |
| 2 | 3.0 | 19.5 | 18.5 |
| 3 | 3.0 | 18.5 | 18.0 |
Annotate: 1. be not boiling;
2. for after the boiling;
Instance 3 is Japanese binder resin.
Claims (6)
1. nylon/PP coextru-lamination adhesive linkage is used preparation methods: it is characterized in that base resin is the combination by olefin type elastomer and random copolymerization PP, the random copolymerization PP of the olefin type elastomer of 60-90% weight percent and 10-40% weight percent; Its preparation method is: with the olefin type elastomer and the PP of said ratio; After the grafted monomer that adds initiator, the gross weight 0.8-1.5 ‰ of its gross weight 0.06-0.12% is poured the abundant mixing of stirrer into, be prepared from through two compression ratio list spiro rod reaction forcing machine granulations again.
2. preparation method as claimed in claim 1 is characterized in that olefin type elastomer is ethylene-octene or ethylene-propylene copolymer, and olefin type elastomer density is at 0.86-0.91g/cm
3Scope.
3. preparation method as claimed in claim 1 is characterized in that material is extruded through the two compression ratio forcing machines reactions of single screw rod behind the mixing, and each section of forcing machine temperature is 130 ℃ of-230 ℃ of scopes.
4. preparation method as claimed in claim 3 is characterized in that two compression ratio forcing machine L/D of said single screw rod >=30: 1.
5. preparation method as claimed in claim 1 is characterized in that initiator is two 25 101.
6. preparation method as claimed in claim 1 is characterized in that grafted monomer is a maleic anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102474145A CN102731726A (en) | 2012-07-13 | 2012-07-13 | Preparation method of material used for nylon/propylene (PP) coextrusion composite adhesive layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102474145A CN102731726A (en) | 2012-07-13 | 2012-07-13 | Preparation method of material used for nylon/propylene (PP) coextrusion composite adhesive layer |
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| CN102731726A true CN102731726A (en) | 2012-10-17 |
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| CN2012102474145A Pending CN102731726A (en) | 2012-07-13 | 2012-07-13 | Preparation method of material used for nylon/propylene (PP) coextrusion composite adhesive layer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235531A (en) * | 2014-08-23 | 2014-12-24 | 陆子万 | Air conditioner hose and production method thereof |
| CN104327347A (en) * | 2014-09-26 | 2015-02-04 | 苏州能之光新材料有限公司 | High-molecular bonding resin used for non-PVC medical transfusion bag and preparation method thereof |
| CN110254191A (en) * | 2014-03-28 | 2019-09-20 | 日本韦琳株式会社 | Weather strip |
| CN113087848A (en) * | 2021-04-20 | 2021-07-09 | 南京棠城塑胶有限公司 | Preparation method of nylon/PP (polypropylene) co-extrusion composite bonding material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250288A (en) * | 2011-05-17 | 2011-11-23 | 南京棠城塑胶有限公司 | Preparation method of adhesive layer material for nylon/PE(polyethylene) co-extrusion lamination |
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2012
- 2012-07-13 CN CN2012102474145A patent/CN102731726A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250288A (en) * | 2011-05-17 | 2011-11-23 | 南京棠城塑胶有限公司 | Preparation method of adhesive layer material for nylon/PE(polyethylene) co-extrusion lamination |
Non-Patent Citations (1)
| Title |
|---|
| 周祥兴: "软塑包装讲座（十）高温蒸煮袋", 《中国包装工业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254191A (en) * | 2014-03-28 | 2019-09-20 | 日本韦琳株式会社 | Weather strip |
| CN104235531A (en) * | 2014-08-23 | 2014-12-24 | 陆子万 | Air conditioner hose and production method thereof |
| CN104327347A (en) * | 2014-09-26 | 2015-02-04 | 苏州能之光新材料有限公司 | High-molecular bonding resin used for non-PVC medical transfusion bag and preparation method thereof |
| CN113087848A (en) * | 2021-04-20 | 2021-07-09 | 南京棠城塑胶有限公司 | Preparation method of nylon/PP (polypropylene) co-extrusion composite bonding material |
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Application publication date: 20121017 |