CN204955604U

CN204955604U - Self -adhesion polyethylene film is used to coiled material packing

Info

Publication number: CN204955604U
Application number: CN201520272317.0U
Authority: CN
Inventors: 易向阳; 陈小兵
Original assignee: JIANGSU UPASS MATERIAL TECHNOLOGY Co Ltd
Current assignee: JIANGSU UPASS MATERIAL TECHNOLOGY Co Ltd
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2016-01-13
Anticipated expiration: 2025-04-30

Abstract

The utility model discloses a self -adhesion polyethylene film is used to coiled material packing, its characterized in that the self -adhesion polyethylene film includes to be squeezed into altogether by the three -layer and blows three -layer that the machine blew off crowded layer structure altogether, three -layer crowded layer structure altogether is PIB self -adhesive layer, transition layer and enhancement layer in proper order, three -layer crowded layer altogether is mixed crowded rete altogether. The utility model discloses squeezing into altogether with the three -layer and blowing the machine and blow off the self -adhesion polyethylene film, need not drop into new equipment, the existing equipment transformation can, effective balance of bond strength and peel strength is accomplished to the self -adhesion polyethylene film, has both accomplished that the packing was swift, and the laminating fastness is big, does not drop, and effectual protection coiled material when using simultaneously, can be shelled out smoothly, does not need special heat seal machine, and the membrane attaches behind the coiled material, accomplishes packing the coiled material with the viscidity of self, the packing is convenient, and is laborsaving, practices thrift manpower and materials.

Description

A kind of coiled material package self-adhesive polyethylene film

Technical field

The utility model relates to waterproof roll, relates in particular to a kind of coiled material package self-adhesive polyethylene film.

Background technology

In waterproofing membrane production, usually do external packing by heat shrinkage film, conventional heat shrink films is:

1) PE heat shrinkage film

Be applicable to the one integral piece assembly package of the products such as drinks, pop can class, mineral water class, various beverage class, cloth, this product pliability is good, and impact resistance, tear resistance are strong, not cracky, be not afraid of tide, shrinkage factor is large;

2) PVC heat shrinkage film

Have that transparency is high, glossiness good, shrinkage factor is high, can become fragile after thermal contraction, be very easy to the features such as damage;

3) POF heat shrinkage film

Surface gloss is high, good toughness, tearing toughness are large, thermal contraction is even and the feature such as applicable fully automatic high-speed packaging, is the regeneration product of conventional P VC heat shrink films.

The use of 2 heat shrink films must have special heat shrink films machine, and take up an area large, energy consumption is high;

3 produce heat shrink films is now generally POF technique, and equipment investment is large, produce as after periosteum, then secondary propels the price of, stretches;

4POF technique need with special copolymerization PP raw material, and raw material is imported raw material, and material cost is high;

5 in use there will be and cause heat shrink films to go out phenomenon in center of gravity post buildup because heat shrink films is bad;

6 packaging speeds are slow, and packaging external appearance quality unsightly.

Utility model content

The purpose of this utility model is the coiled material package self-adhesive polyethylene film providing a kind of packaged convenience.

For achieving the above object, the technical solution of the utility model is as follows: a kind of coiled material package self-adhesive polyethylene film, it is characterized in that described self-adhesive polyethylene film comprises three-layer co-extruded Rotating fields, described three-layer co-extruded Rotating fields is followed successively by PIB self-adhesive layer, transition zone and enhancement layer, and described three-layer co-extruded layer is mixing co-extrusion rete.The thickness of described three-layer co-extruded Rotating fields is respectively: PIB self-adhesive layer: transition zone: enhancement layer=4:2.8 ~ 3.2:2.8 ~ 3.2.The gross thickness of described three-layer co-extruded Rotating fields is 0.04 ~ 0.06mm.

The three-layer co-extruded blowing up machine blowout self-adhesive polyethylene film of the utility model, do not need to drop into new equipment, existing equipment is transformed; Self-adhesive polyethylene film adopts PIB self-adhesive layer as adhesive layer, and due to the proportionate relationship wherein between threeply degree, therefore, it is possible to accomplish the active balance of laminating intensity and peel strength, both accomplished that packaging was quick, laminating fastness is large, simultaneously also can strip off smoothly, does not need Special heat sealing machine, after film is attached to coiled material, complete packing coiled material by the viscosity of self; Cost of material is lower relative to POF, for client is cost-saving; Packaged convenience, laborsaving, use manpower and material resources sparingly.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model one embodiment.

Detailed description of the invention

A kind of coiled material package self-adhesive polyethylene film, it is characterized in that described self-adhesive polyethylene film comprises the three-layer co-extruded Rotating fields blown out by three-layer co-extruded blowing up machine, described three-layer co-extruded Rotating fields is followed successively by PIB self-adhesive layer 1, transition zone 2 and enhancement layer 3, and described three-layer co-extruded layer is mixing co-extrusion rete.The thickness of described three-layer co-extruded Rotating fields is respectively: PIB self-adhesive layer 40%, transition zone 30% and enhancement layer 30%, and thickness proportion 4:3:3, PIB self-adhesive layer, than other two thickness, is conducive to self-adhesion effect.According to specific embodiment of the utility model, described self-adhesive polyethylene film gross thickness is 0.05mm, PIB self-adhesive layer thickness 0.02mm, transition region thickness 0.015mm, enhancement layer thickness 0.015mm.

According to a preferred embodiment of the present utility model, the co-extrusion material of PIB self-adhesive layer 1 is LLDPE(LLDPE), mLLDPE(metallocene linear-low density polyethylene), the mixture of PIB masterbatch, its mixing quality is than being LLDPE:mLLDPE:PIB masterbatch=10:2.5 ~ 3.5:1.7 ~ 2.3.

According to a preferred embodiment of the present utility model, the co-extrusion material of transition zone 2 is EVA(vinyl-vinyl acetate copolymer) and mLLDPE(metallocene linear-low density polyethylene) mixture, its mixing quality is than for EVA:mLLDPE=10:5.5 ~ 6.5.

According to a preferred embodiment of the present utility model, the co-extrusion material of enhancement layer 3 is mLLDPE(metallocene linear-low density polyethylene) and LDPE(low density polyethylene (LDPE)), its mixing quality is than being mLLDPE:LDPE=10:3.6 ~ 4.4.

According to preferred embodiment of the present utility model, the manufacture technology of PIB masterbatch is by PIB(polyisobutene, a kind of high polymer of thickness) and mLLDPE (metallocene linear high pressure PEF) and LLDPE (linear low density PEF), in the ratio of 6:2:2, after mixing, be 50mm at diameter, draw ratio is the parallel equidirectional two-screw extruder of 40, carry out blending and modifying granulation, prilling temperature control interval 160 DEG C-180 DEG C.

The benefit adopting mLLDPE is that mechanical strength is good, and resin is soft, effectively can assist the bonding effect of PIB resin.

The utility model is the three-layer co-extruded Rotating fields utilizing three-layer co-extruded blowing up machine, utilizes the bond properties of binder resin polyisobutene (PIB), makes film produce viscosity; PIB is a kind of water white thick liquid, incompatible with polymer P E, and after PE film is produced, PIB meeting migration precipitation to the surface of PE film, thus makes film produce viscosity.PIB is water white liquid at normal temperatures, therefore needs could be joined in extruder with syringe pump, and this is the usually bad phenomenon such as, seepage uneven with dispersion just.In order to solve the problem, the utility model, by C8LLDPE and PIB mixing granulator, is made thickening master batch to use.The utility model adopts PIB self-adhesive layer as adhesive layer, can produce best bonding effect.

These are only embodiment of the present utility model; not thereby protection domain of the present utility model is limited; all utilize utility model description to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other correlative technology field, include in protection domain of the present utility model.

Claims

1. a coiled material package self-adhesive polyethylene film, is characterized in that described self-adhesive polyethylene film comprises three-layer co-extruded Rotating fields, and described three-layer co-extruded Rotating fields is followed successively by PIB self-adhesive layer, transition zone and enhancement layer, and described three-layer co-extruded layer is mixing co-extrusion rete.

2. coiled material package self-adhesive polyethylene film as claimed in claim 1, is characterized in that the thickness of described three-layer co-extruded Rotating fields is respectively: PIB self-adhesive layer: transition zone: enhancement layer=4:2.8 ~ 3.2:2.8 ~ 3.2.