CN201484834U

CN201484834U - Composite film for bechamel

Info

Publication number: CN201484834U
Application number: CN2009201869729U
Authority: CN
Inventors: 胡鸿波; 胡继超
Original assignee: Huangshan Novel Co Ltd
Current assignee: Huangshan Novel Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2010-05-26
Anticipated expiration: 2019-08-14

Abstract

The utility model discloses a composite film for bechamel, which comprises a polyethylene glycol terephthalate layer, an aluminium foil layer, an ethylene-acrylic acid copolymer layer, a bimodal low-intensity polyethylene layer and a metallocene polyethylene blended modified resin layer from exterior to interior in sequence. Compared with the prior art, the utility model has the characteristics of high sealing strength, short heat sealing time, good sealing effect and sealing flatness, good pollution-resistant performance, mediator resistant effect, low cost, low probability of layering and the like.

Description

A kind of complex film that is used for tartar sauce

Technical field

The utility model belongs to complex film, belongs to a kind of complex film that is used for tartar sauce especially.

Background technology

Tartar sauce is meant catsup, thick chilli sauce, meat sauce, has acid, salty, peppery characteristics.Along with the rhythm of life is accelerated, many special advantages such as the complex film inner wrapping of tartar sauce is easy to carry, elegant in appearance with it, use is quick have obtained people's favor, but common each interlayer of AL plastic composite materials all is to adopt two component adhesive to be combined with each other, form complex film, this kind composite material can not the acid and alkali-resistance content, corroded by tartar sauce easily, leak.

The utility model content

Technical problem to be solved in the utility model provides a kind of complex film that is used for the tartar sauce packing.

The technical scheme of the utility model technical solution problem is: be used for the complex film of tartar sauce, complex film is followed successively by polyethylene terephthalate (PET) layer, aluminium foil layer, ethylene acrylic acid co polymer (EAA) layer, bimodal lower density degree polyethylene (SPPE) layer, metallocene PE blending and modifying resin (MLDPE) layer from outside to inside.

The thickness of described ethylene acrylic acid co polymer (EAA) layer is 10-20 μ m.

The thickness of described bimodal lower density degree polyethylene (SPPE) layer is 4-18 μ m.

Described metallocene PE blending and modifying resin bed is formed through three-layer co-extruded by linear low density polyethylene layer, low density polyethylene layer, medium density polyethylene, metallocene PE blend, be divided into and the contacted skin of bimodal low density polyethylene (LDPE), interlayer, heat sealable internal layer, specifically consist of:

Skin is made up of low density polyethylene (LDPE) and linear polyethylene.

Interlayer is made up of low density polyethylene (LDPE), medium density polyethylene, metallocene PE.

Internal layer is made up of low density polyethylene (LDPE), linear low density polyethylene, metallocene PE.

Described pet layer: mainly be used as stock, can print various multicolour patterns as requested, also have high temperature resistant, as can to adapt to high speed printing requirement simultaneously;

Described aluminium foil layer can intercept the water in air steam, and oxygen, light have good fragrance protectiveness;

Described EAA layer can form chemical bonds such as hydrogen bond with AL, has guaranteed and the combined strength bination of aluminium foil base material, does not need adhesion agent, has avoided in the packing content thing permeable membrane, causes the complex film layering, the problem that peel strength descends.Blocked up as EAA, have that necking down causes extruding layer thickness degree of uniformity shortcoming rambunctious, thin excessively greatly in the course of processing, have the low shortcoming of combined strength bination.

Because EAA is an acidic polymer, cause man-hour the thickness degree of uniformity poor easily extruding to add, tighten greatly, processing characteristics is bad.SPPE belongs to bimodal polyethylene, and processing characteristics approaches common polyethylene, can be good at remedying the bad shortcoming of EAA processing characteristics.

Because general polyethylene do not have bonding effect, must use adhesion agent, the seepage lamination just easily takes place, and SPPE has excellent adhesion performance in package media class content, can carry out good compound with EAA and MLDPE film.

It is innermost layer that described metallocene PE blend changes resin bed, and it has good low-temperature heat-sealing effect and antifouling property are arranged, and therefore when loading sauce, is stained with some sauces even seal, and good heat-sealing effect also can be arranged.

The complex film that the utility model is produced can be used for not only can being used for the packing of catsup, thick chilli sauce, mustard, minced meat, curry paste, peanut butter, also can be used for cosmetics, pesticides packaging.

The utility model compared with prior art has the sealing-strength height, and the heat-sealing time is short, and sealing effect is good, and the sealing formation degree is good, and antifouling property is good, has anti-medium effect, and cost is low, is difficult for characteristics such as layering.

Description of drawings

Fig. 1 is the structural representation of complex film of the present utility model.

Fig. 2 is the structural representation of metallocene PE blending and modifying resin bed in the complex film of the present utility model.

Fig. 3 is a flow scheme of the present utility model.

Fig. 4 is the scheme drawing of blend compound working procedure of the present utility model.

In Fig. 1,2,4,1 is that polyethylene terephthalate (PET) layer, 2 is metallocene PE blending and modifying resin (MLDPE) layer for bimodal lower density degree polyethylene (SPPE) layer, 5 for ethylene acrylic acid co polymer (EAA) layer, 4 for aluminium foil layer, 3.51 is that skin, 52 interlayers, 53 are heat sealable internal layer, 11 be one put, 12 be two to put, 13 be finished product for SPPE resin, 16 for EAA resin, 15 for bimodulus head extruder, 14.

The specific embodiment

Below in conjunction with embodiment the utility model is done detailed explanation.

Embodiment 1:

Shown in Fig. 1,2,3,4: a kind of complex film that is used for the tartar sauce packing, produce by following operation:

1, the dried preface of returning to work: on polyethylene terephthalate (PET) film, print; It is compound that PET film and AL are carried out dry type, forms the PET/AL complex film, and compound lining cement is the glutinous agent of two-component polyurethane adhesive, and producing house is Henkel KGaA, and the trade mark is UK3640;

2, metallocene PE blending and modifying resin bed preparation section is: the pellet of each layer is mixed blown film according to following proportioning, form and contacted outer 51, the interlayer 52 of bimodal low density polyethylene (LDPE), heat sealable internal layer 53;

Described outer 51 proportioning is: 50Kg low density polyethylene (LDPE) (TN00)+50Kg linear low density polyethylene (7042); Outer field thickness is 7 μ m.

The proportioning in described middle level 52 is: 50Kg low density polyethylene (LDPE) (Q281)+50Kg metallocene PE (1881)+25Kg medium density polyethylene (SP4020), the thickness in middle level are 8 μ m.

The proportioning of described internal layer 53 is: the thickness of 25Kg low density polyethylene (LDPE) (Q281)+50Kg metallocene PE (1881)+25Kg linear low density polyethylene (218W) internal layer is 10 μ m.

3, blend compound working procedure: one of bimodulus head extruder 3 put on 11 place PET/AL complex film, two put place metallocene PE blending and modifying resin molding on 12, EAA resin 14 carries out coextru-lamination with SPPE resin 15 by bimodulus head extruder 13 and PET film, metallocene PE blending and modifying resin, the complex film of formation is followed successively by polyethylene terephthalate (PET) layer 1, aluminium foil layer 2, ethylene acrylic acid co polymer (EAA) layer 3, bimodal lower density degree polyethylene (SPPE) layer 4, metallocene PE blending and modifying resin (MLDPE) layer 5 from outside to inside.

The thickness of described EAA layer 3 is 10 μ m, and the thickness of SPPE layer 4 is 4 μ m.

Embodiment 2:

The thickness that removes described EAA layer 3 is 15 μ m, and the thickness of SPPE layer 4 is outside the 12 μ m, and all the other are identical with embodiment 1.

Embodiment 3:

The thickness that removes described EAA layer 3 is 20 μ m, and the thickness of SPPE layer 4 is outside the 18 μ m, and all the other are identical with embodiment 1.

The technical index of embodiment 1-3 is as shown in table 5:

Table 5:

Claims

1. complex film that is used for tartar sauce, it is characterized in that: complex film is followed successively by polyethylene terephthalate layer, aluminium foil layer, ethylene acrylic acid co polymer layer, bimodal lower density degree polyethylene layer, metallocene PE blending and modifying resin bed from outside to inside.

2. a kind of complex film that is used for tartar sauce according to claim 1 is characterized in that: the thickness of described ethylene acrylic acid co polymer layer is 10-20 μ m.

3. a kind of complex film that is used for tartar sauce according to claim 1 is characterized in that: the thickness of described bimodal lower density degree polyethylene layer is 4-18 μ m.

4. a kind of complex film that is used for tartar sauce according to claim 1 is characterized in that: described metallocene PE blending and modifying resin bed is by forming with the contacted skin of bimodal low density polyethylene (LDPE), interlayer, heat sealable internal layer.