CN109016761A - Plastic foil and courier bag - Google Patents

Plastic foil and courier bag Download PDF

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Publication number
CN109016761A
CN109016761A CN201810910280.8A CN201810910280A CN109016761A CN 109016761 A CN109016761 A CN 109016761A CN 201810910280 A CN201810910280 A CN 201810910280A CN 109016761 A CN109016761 A CN 109016761A
Authority
CN
China
Prior art keywords
density polyethylene
low density
raw material
metallocene
linear low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810910280.8A
Other languages
Chinese (zh)
Inventor
吴松美
黄亮
蒋尊国
武睿泽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SF Express Co Ltd
Original Assignee
SF Express Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SF Express Co Ltd filed Critical SF Express Co Ltd
Priority to CN201810910280.8A priority Critical patent/CN109016761A/en
Publication of CN109016761A publication Critical patent/CN109016761A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

This application discloses a kind of plastic foil and courier bag, by bottom, middle layer and upper layer is three-layer co-extruded is blow molded, and the raw material on the upper layer includes linear low density polyethylene, bimodal polyethylene and metallocene；The raw material of the middle layer includes linear low density polyethylene, high density polyethylene and metallocene；The raw material of the bottom includes the linear low density polyethylene containing slipping agent, low density polyethylene (LDPE) line and metallocene containing slipping agent.The courier bag is made by the plastic foil.Each layer component difference of plastic film of the present invention, eventually leads to the reduction of its thickness, can be used as courier bag, and upper layer uses bimodal polyethylene, good with the associativity of express delivery list, can make to post single securely stickup fastly.

Description

Plastic foil and courier bag
Technical field
The disclosure belongs to field of plastic products more particularly to a kind of plastic foil and courier bag.
Background technique
As electric business express delivery industry develops, people have got used to online platform shopping, and polybag is because of low in cost, operation The advantages that facilitating, businessman would generally be packed using polybag.According to statistics, express delivery polybag usage quantity in 2017 is up to 160 Hundred million, and express delivery packaging poly-bag use primary raw material polythene PE be it is nondegradable, produce a large amount of white garbage, give Natural environment brings harm.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, be intended to provide that a kind of materials in production are few and property retention not The plastic foil and courier bag of change.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of plastic foil, by bottom, middle layer and upper layer is three-layer co-extruded is blow molded, and the raw material on the upper layer includes linear Low density polyethylene (LDPE), bimodal polyethylene and metallocene；
The raw material of the middle layer includes linear low density polyethylene, high density polyethylene and metallocene；
The raw material of the bottom includes the linear low density polyethylene containing slipping agent, the low density polyethylene containing slipping agent Alkene line and metallocene.
The raw material on the upper layer includes the substance of following weight percentage:
Linear low density polyethylene 30%~40%, bimodal polyethylene 45%~55% and metallocene 5%~15%.
The bottom and the raw material of middle layer further include Masterbatch.
The Masterbatch is at least one in black agglomerate, red master batch, white master batch, grey Masterbatch and yellow masterbatch Kind.
The raw material of the middle layer includes the substance of following weight percentage:
Linear low density polyethylene 25%~35%, high density polyethylene 20%~30%, metallocene 15%~ 25% and first Masterbatch 20%~25%.
The raw material of the bottom includes the substance of following weight percentage:
Linear low density polyethylene 70%~80.5% containing slipping agent, the low density polyethylene (LDPE) line containing slipping agent 10%~15%, metallocene 8%~15% and the second Masterbatch 1.5%~2.5%.
Thickness ratio between three layers of the bottom, middle layer and upper layer is 3:4:3.
The present invention also provides a kind of courier bags, are prepared according to above-mentioned plastic foil.
The courier bag with a thickness of 0.048mm-0.052mm.
Compared with prior art, the beneficial effects of the present invention are:
Using plastics film preparation express delivery polybag of the invention, express delivery polybag thickness can be adjusted downward to by 0.055mm 0.05mm, but property retention is constant, can effectively ensure that the safety of express mail；
Express delivery polybag thickness is lowered, and weight can be reduced, it is contemplated that annual raw material capable of reducing using is about on 3000 tons of left sides The right side, more low-carbon environment-friendly.
Each layer component of plastic film of the present invention is different, eventually leads to the reduction of its thickness, can be used as courier bag, and upper layer uses double Peak polyethylene, it is good with the associativity of express delivery list, it can make to post single securely stickup fastly.
Specific embodiment
The application is described in further detail below with reference to embodiment.It is understood that tool described herein Body embodiment is used only for explaining related invention, rather than the restriction to the invention.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.
Embodiment 1
Raw material is weighed according to following proportion:
The raw material on upper layer includes the substance of following weight percentage:
Linear low density polyethylene 40.00%, bimodal polyethylene 50.00% and metallocene 10.00%.
The raw material of middle layer includes the substance of following weight percentage:
Linear low density polyethylene 35%, high density polyethylene 20%, metallocene 25% and white master batch 20%.
The raw material of bottom includes the substance of following weight percentage:
Linear low density polyethylene 73.5% containing slipping agent, the low density polyethylene (LDPE) line 10% containing slipping agent, cyclopentadienyl Metal 15% and black agglomerate 1.5%.
Thickness ratio between three layers of the bottom, middle layer and upper layer is 3:4:3.
Preparation method:
According to above-mentioned thickness ratio, bottom, middle layer and the three-layer co-extruded blow molding of the raw material on upper layer are formed into plastic foil, will be moulded Expect film preparation at courier bag, courier bag with a thickness of 0.048mm, pasted on upper layer and post list fastly, since upper layer uses bimodal poly- second Alkene can make to post single securely stickup fastly so that upper layer and the associativity of express delivery list are good.
Present invention reduces the thickness of existing courier bag, to save raw material, have and reduce weight and post single stickup jail fastly Solid advantage.
Embodiment 2
Raw material is weighed according to following proportion:
The raw material on upper layer includes the substance of following weight percentage:
Linear low density polyethylene 40.00%, bimodal polyethylene 45.00% and metallocene 15.00%.
The raw material of middle layer includes the substance of following weight percentage:
Linear low density polyethylene 35%, high density polyethylene 25%, metallocene 20% and white master batch 20%.
The raw material of bottom includes the substance of following weight percentage:
Linear low density polyethylene 70% containing slipping agent, the low density polyethylene (LDPE) line 15% containing slipping agent, cyclopentadienyl gold Belong to 13.5% and grey Masterbatch 1.5%.
Thickness ratio between three layers of bottom, middle layer and upper layer is 3:4:3.
Preparation method is same as Example 1, except that in the present embodiment courier bag with a thickness of 0.050mm.
Embodiment 3
Raw material is weighed according to following proportion:
The raw material on upper layer includes the substance of following weight percentage:
Linear low density polyethylene 35.00%, bimodal polyethylene 55.00% and metallocene 10.00%.
The raw material of middle layer includes the substance of following weight percentage:
Linear low density polyethylene 30%, high density polyethylene 20%, metallocene 25% and white master batch 25%.
The raw material of bottom includes the substance of following weight percentage:
Linear low density polyethylene 75% containing slipping agent, the low density polyethylene (LDPE) line 13% containing slipping agent, cyclopentadienyl gold Belong to 10% and black agglomerate 2%.
Thickness ratio between three layers of bottom, middle layer and upper layer is 3:4:3.
Preparation method is same as Example 1, except that in the present embodiment courier bag with a thickness of 0.049.
Embodiment 4
Raw material is weighed according to following proportion:
The raw material on upper layer includes the substance of following weight percentage:
Linear low density polyethylene 40.00%, bimodal polyethylene 55.00% and metallocene 5.00%.
The raw material of middle layer includes the substance of following weight percentage:
Linear low density polyethylene 25%, high density polyethylene 30%, metallocene 20%, white master batch 20% and Huang Masterbatch 5%.
The raw material of bottom includes the substance of following weight percentage:
Linear low density polyethylene 79.5% containing slipping agent, the low density polyethylene (LDPE) line 10% containing slipping agent, cyclopentadienyl Metal 8% and red master batch 2.5%.
Thickness ratio between three layers of bottom, middle layer and upper layer is 3:4:3.
Preparation method is same as Example 1, except that in the present embodiment courier bag with a thickness of 0.051mm.
Embodiment 5
Raw material is weighed according to following proportion:
The raw material on upper layer includes the substance of following weight percentage:
Linear low density polyethylene 30.00%, bimodal polyethylene 55.00% and metallocene 15.00%.
The raw material of middle layer includes the substance of following weight percentage:
Linear low density polyethylene 35%, high density polyethylene 28%, metallocene 15% and yellow masterbatch 22%.
The raw material of bottom includes the substance of following weight percentage:
Linear low density polyethylene 80.5% containing slipping agent, the low density polyethylene (LDPE) line 10% containing slipping agent, cyclopentadienyl Metal 8% and black agglomerate 1.5%.
Thickness ratio between three layers of bottom, middle layer and upper layer is 3:4:3.
Preparation method is same as Example 1, except that in the present embodiment courier bag with a thickness of 0.052mm.
Design principle of the invention:
Express delivery polybag lightweight scheme of the invention will not bring the decline of physical property, and can meet national standard GB/ T16606.3 requirement.
The physical performance index of express delivery plastics mainly has tensile strength, fracture norminal strain, heat sealing strength, anti-Charpy impact Energy, puncture strength, light transmittance.HDPE (high density polyethylene (HDPE), High Density Polyethylene) is close because of molecular chain length Degree is big, and crystallinity is high, and mechanical strength is big, therefore HDPE is added in polybag can increase tensile strength, but HDPE toughness is poor, institute Not reduce fracture norminal strain to promote tensile strength, HDPE and LLDPE linear low density polyethylene should be used (Linear Low-Density Polyethy-lene, LLDPE) blending method；HDPE melting means is low, and processing temperature is high, bag making mistake Syncretizing effect is relatively poor in journey, and metallocene melting means is high, and processing temperature is low, express delivery polybag internal layer addition metallocene can be with Accelerate, heat sealing strength can be improved；Metallocene is rigidly small, but good toughness, and addition metallocene can effectively improve anti-Charpy impact And puncture strength；By test of drawing a design, middle layer uses high density polyethylene (HDPE) and a certain proportion of metallocene, and middle-high density is poly- Ethylene can promote the tensile strength and rigidity of courier bag, and metallocene can promote the anti-Charpy impact of express delivery and fracture is nominally answered Become.Bottom of the present invention can be prevented fastly using the low density polyethylene (LDPE) containing slipping agent and the linear low density polyethylene containing slipping agent Pass adhesion inside bag.
Illustrate contrast effect of the invention below by table 1:
Comparative example posts polybag to be existing fastly, shows existing express delivery polybag with a thickness of 0.055mm, thickness by table 1 The express delivery polybag being higher than in the embodiment of the present invention, but the physical properties such as tensile strength, heat sealing strength and anti-Charpy impact energy Less than the courier bag physical property in the embodiment of the present invention, illustrate that the express delivery polybag performance of the embodiment of the present invention is more excellent, The safety of express mail can be more effectively protected, and thickness is thin, raw material can be saved, realize energy-saving and emission-reduction.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims (9)

1. a kind of plastic foil is made of altogether three layers of bottom, middle layer and upper layer, which is characterized in that the raw material on the upper layer includes Linear low density polyethylene, bimodal polyethylene and metallocene；
The raw material of the middle layer includes linear low density polyethylene, high density polyethylene and metallocene；
The raw material of the bottom includes the linear low density polyethylene containing slipping agent, the low density polyethylene (LDPE) line containing slipping agent And metallocene.
2. plastic foil according to claim 1, which is characterized in that the raw material on the upper layer includes following weight percentage Substance:
Linear low density polyethylene 30%~40%, bimodal polyethylene 45%~55% and metallocene 5%~15%.
3. plastic foil according to claim 1 or 2, which is characterized in that the bottom and the raw material of middle layer further include color Master batch.
4. plastic foil according to claim 3, which is characterized in that the Masterbatch is black agglomerate, red master batch, white Master batch, grey at least one of Masterbatch and yellow masterbatch.
5. plastic foil according to claim 4, which is characterized in that the raw material of the middle layer includes that following weight percent contains The substance of amount:
Linear low density polyethylene 25%~35%, high density polyethylene 20%~30%, 15%~25% and of metallocene First Masterbatch 20%~25%.
6. plastic foil according to claim 5, which is characterized in that the raw material of the bottom includes following weight percentage Substance:
Linear low density polyethylene 70%~80.5% containing slipping agent, the low density polyethylene (LDPE) line 10% containing slipping agent~ 15%, metallocene 8%~15% and the second Masterbatch 1.5%~2.5%.
7. plastic foil according to claim 6, which is characterized in that the thickness between three layers of the bottom, middle layer and upper layer Degree is than being 3:4:3.
8. a kind of courier bag, which is characterized in that the courier bag is by the described in any item plastics film preparations of claim 1-7 It forms.
9. courier bag according to claim 8, which is characterized in that the courier bag with a thickness of 0.048mm-0.052mm.
CN201810910280.8A 2018-08-10 2018-08-10 Plastic foil and courier bag Pending CN109016761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810910280.8A CN109016761A (en) 2018-08-10 2018-08-10 Plastic foil and courier bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810910280.8A CN109016761A (en) 2018-08-10 2018-08-10 Plastic foil and courier bag

Publications (1)

Publication Number Publication Date
CN109016761A true CN109016761A (en) 2018-12-18

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Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111016370A (en) * 2019-12-24 2020-04-17 厦门聚富塑胶制品有限公司 Silage packaging film and preparation method thereof
CN111806029A (en) * 2020-08-12 2020-10-23 岳阳隆兴实业公司 Co-extrusion heavy-load packaging film and manufacturing method thereof
CN112406228A (en) * 2019-08-22 2021-02-26 顺启和(深圳)科技有限公司 Ultrathin plastic film, preparation method of ultrathin plastic film and express bag

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Publication number Priority date Publication date Assignee Title
CN1978184A (en) * 2005-12-01 2007-06-13 丹阳市万乐复合材料厂 Method for producing blowing-film for bags
CN103625052A (en) * 2013-08-02 2014-03-12 苏州艾兴无纺布制品有限公司 Ultrathin film with high barrier properties and preparation process thereof
CN104859948A (en) * 2015-06-12 2015-08-26 成都市益诚包装有限公司 High impact force-resistant polyethylene heat shrink film and film blowing process
CN105034502A (en) * 2014-03-17 2015-11-11 盟迪格罗瑙有限公司 Multi-layer blown film for producing labels
CN107987203A (en) * 2016-10-26 2018-05-04 中国石油天然气股份有限公司 A kind of preparation method of transparent LLDPE film resins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1978184A (en) * 2005-12-01 2007-06-13 丹阳市万乐复合材料厂 Method for producing blowing-film for bags
CN103625052A (en) * 2013-08-02 2014-03-12 苏州艾兴无纺布制品有限公司 Ultrathin film with high barrier properties and preparation process thereof
CN105034502A (en) * 2014-03-17 2015-11-11 盟迪格罗瑙有限公司 Multi-layer blown film for producing labels
CN104859948A (en) * 2015-06-12 2015-08-26 成都市益诚包装有限公司 High impact force-resistant polyethylene heat shrink film and film blowing process
CN107987203A (en) * 2016-10-26 2018-05-04 中国石油天然气股份有限公司 A kind of preparation method of transparent LLDPE film resins

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Title
王建清: "《包装材料学》", 28 February 2017 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112406228A (en) * 2019-08-22 2021-02-26 顺启和(深圳)科技有限公司 Ultrathin plastic film, preparation method of ultrathin plastic film and express bag
CN111016370A (en) * 2019-12-24 2020-04-17 厦门聚富塑胶制品有限公司 Silage packaging film and preparation method thereof
CN111806029A (en) * 2020-08-12 2020-10-23 岳阳隆兴实业公司 Co-extrusion heavy-load packaging film and manufacturing method thereof

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Application publication date: 20181218