CN106750846A - A kind of low melting point packaging film and its application in packaging bag is prepared - Google Patents

A kind of low melting point packaging film and its application in packaging bag is prepared Download PDF

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Publication number
CN106750846A
CN106750846A CN201611016872.2A CN201611016872A CN106750846A CN 106750846 A CN106750846 A CN 106750846A CN 201611016872 A CN201611016872 A CN 201611016872A CN 106750846 A CN106750846 A CN 106750846A
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CN
China
Prior art keywords
melting point
low melting
film
bag
point packaging
Prior art date
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Pending
Application number
CN201611016872.2A
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Chinese (zh)
Inventor
周中华
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Weifang Zhong Xin Platinum Materials Co Ltd
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Weifang Zhong Xin Platinum Materials Co Ltd
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Priority to CN201611016872.2A priority Critical patent/CN106750846A/en
Publication of CN106750846A publication Critical patent/CN106750846A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C08L2203/162—Applications used for films sealable films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/24—Crystallisation aids

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)

Abstract

The invention discloses a kind of low melting point packaging film and its application in packaging bag is prepared.By mass percentage, the formula of the low melting point packaging film is：Ethylene-vinyl acetate copolymer 90%；Silica 2%；Composite anti-blocking masterbatch 8%.The present invention adds nucleator silica in formula so that packaging film has good transparency；And at 73 ± 1 DEG C, fusing point is stable, not cracky for fusing point control.The low melting point packaging film be particularly well-suited to produce bag it is wide≤the low melting point packaging bag of 400mm, the packaging bag dimensionally stable of acquisition, vertically and horizontally physical property is consistent, and sealing strength is high, is not likely to produce deformation, not cracky；Transparency is high, non-wrinkled, good appearance.

Description

A kind of low melting point packaging film and its application in packaging bag is prepared
Technical field
The present invention relates to a kind of packaging material, and in particular to a kind of low melting point packaging film and its answering in packaging bag is prepared With.
Background technology
With the raising of environmental requirement, all trades and professions all hardy work to reach environmental protection standard.Rubber industry By it is original it is open feed intake switch to it is closed feed intake come the pollution for reducing material to environment, industry is generated therefrom special Low melting point plastic packaging bag.Though current China has started to walk in low melting point packaging bag, problem is also a lot, is mainly shown as following The problem of several respects:
(1) outward appearance of packaging bag has obvious shortcoming, and gauffer, transparency are low, packaging bag poor dimensional stability, sealing are strong Spend low, cracky；
(2) physical index is low, and vertically and horizontally difference is big for intensity, causes the direction for low intensity often occur damaged (particularly small The sack of specification is even more serious), due to it is each to the opposite sex, there is greatly change, load pole after material in the elongation of packing material Deformation is also easy to produce, causes run-down；
(3) fusing point skewness, temperature difference is larger, influences subsequent applications, also directly influences the product of downstream client Quality；
(4) limited by current domestic equipment, cause the manufacture craft scheme of low melting point packaging bag unreasonable, caused packaging Bag quality does not reach use requirement.
The content of the invention
The invention provides a kind of low melting point packaging film, low melting point packaging film fusing point stabilization, vertically and horizontally physical property is consistent, no Cracky, good appearance, product quality is high.
A kind of low melting point packaging film, by mass percentage, is formulated and is：
Ethylene-vinyl acetate copolymer 90%；
Silica 2%；
Composite anti-blocking masterbatch 8%.
The present invention adds nucleator silica in formula so that packaging film has good transparency；And fusing point At 73 ± 1 DEG C, fusing point is stable, not cracky for control.
Present invention also offers application of the low melting point packaging film in packaging bag is prepared.
Preferably, the bag of the packaging bag it is wide≤400mm, a length of film of the bag of the packaging bag rolls over the half in footpath.
Present invention also offers a kind of preparation method of low melting point packaging bag, the preparation method is comprised the following steps：
(1) grain is mixed：By default mass percent, the raw material of the low melting point packaging film is well mixed, obtains batch mixing；
(2) blown film：Using inflation film manufacturing machine is by batch mixing heating and melting and is processed into material film, material film is obtained after cooling Low melting point packaging film；
(3) bag：Low melting point packaging film is cut and sealed by default specification, the eutectic point packaging is obtained Bag.
Preferably, in step (2), the blow-up ratio of the blown film is 3~5:1.Packaging bag is realized by improving blow-up ratio The vertically and horizontally same sex, make that the vertically and horizontally physical property of low melting point packaging film is consistent, thickness is uniform.
Used as further preferred, in step (2), the blow-up ratio of the blown film is 4:1.
Preferably, in step (2), the cooling is using the type of cooling inside and outside film bubble.Can using this type of cooling Further improve the transparency of low melting point packaging film.
Preferably, in step (2), the temperature of the cooling is less than 20 DEG C.By chilling temperature control below 20 DEG C, energy Enough reduce the thickness difference between each position of low melting point packaging film, it is ensured that low melting point packaging film thickness is uniform, eliminate gauffer, improvement is outer See.
Preferably, in step (3), the bag includes：
1) along the length bearing of trend of low melting point packaging film, low melting point packaging film is cut by default bag is wide, is obtained Obtain multiple small dimension low melting point packaging films；
2) carry out bilateral heat-sealing to each small dimension low melting point packaging film, and along hot-sealing line perpendicular bisector by small dimension low melting point Packaging film is cut open, obtains the low melting point packaging bag that a length of 1/2nd film of bag rolls over footpath.
The low melting point packaging bag obtained by above-mentioned bag mode, dimensionally stable, vertically and horizontally physical property is consistent, sealing strength Height, is not likely to produce deformation, not cracky.
Compared with prior art, beneficial effects of the present invention are：
(1) present invention adds nucleator silica in formula so that low melting point packaging film has good transparency； And at 73 ± 1 DEG C, fusing point is stable, not cracky for fusing point control；
(2) present invention realizes the vertically and horizontally same sex of packaging bag by improving blow-up ratio, makes low melting point packaging film vertically and horizontally Physical property is consistent, and thickness is uniform；
(3) present invention is cooled down using the type of cooling inside and outside film bubble, and by chilling temperature control below 20 DEG C, so that Reduce the thickness difference between each position of low melting point packaging film, it is ensured that low melting point packaging film thickness is uniform, eliminate gauffer, improvement is outer See；
(4) present invention is by improving bag mode so that the low melting point packaging bag of acquisition, dimensionally stable, vertically and horizontally physical property Unanimously, sealing strength is high, is not likely to produce deformation, not cracky；Be particularly suited for producing bag it is wide≤the eutectic point packaging of 400mm Bag.
Brief description of the drawings
Fig. 1 is bag schematic diagram of the invention；Wherein, 1 is hot-sealing line, and 2 is perpendicular bisector, and W is that bag is wide, L1For film is rolled over Footpath, L2For bag is long；
Fig. 2 is bag schematic diagram of the prior art；Wherein, 101 is hot-sealing line, and L is that film rolls over footpath.
Specific embodiment
Technical scheme is described in further detail with reference to the accompanying drawings and detailed description.
Embodiment 1
A kind of preparation method of low melting point packaging bag, the preparation method is comprised the following steps：
(1) grain is mixed：By default mass percent, following raw materials according is well mixed, obtains batch mixing：
90% ethylene-vinyl acetate copolymer, 2% silica, 8% composite anti-blocking masterbatch；
(2) blown film：Using inflation film manufacturing machine is by batch mixing heating and melting and is processed into material film, blow-up ratio is 3:1；
Then, using the type of cooling inside and outside film bubble, cooling treatment is carried out to material film at 20 DEG C, obtains low melting point bag Dress film；
(3) bag (as shown in Figure 1)：
1) along the length bearing of trend of low melting point packaging film, low melting point packaging film is carried out by default bag W wide (400mm) Cut, obtain multiple small dimension low melting point packaging films；
2) carry out bilateral heat-sealing to each small dimension low melting point packaging film, and along hot-sealing line 1 perpendicular bisector 2 by small dimension eutectic Point packaging film is cut open, obtains bag L long2For 1/2nd films roll over footpath L1Low melting point packaging bag (73 DEG C of fusing point).
Embodiment 2
A kind of preparation method of low melting point packaging bag, the preparation method is comprised the following steps：
(1) grain is mixed：By default mass percent, following raw materials according is well mixed, obtains batch mixing：
90% ethylene-vinyl acetate copolymer, 2% silica, 8% composite anti-blocking masterbatch；
(2) blown film：Using inflation film manufacturing machine is by batch mixing heating and melting and is processed into material film, blow-up ratio is 5:1；
Then, using the type of cooling inside and outside film bubble, cooling treatment is carried out to material film at 10 DEG C, obtains low melting point bag Dress film；
(3) bag (as shown in Figure 1)：
1) along the length bearing of trend of low melting point packaging film, low melting point packaging film is carried out by default bag W wide (300mm) Cut, obtain multiple small dimension low melting point packaging films；
2) carry out bilateral heat-sealing to each small dimension low melting point packaging film, and along hot-sealing line 1 perpendicular bisector 2 by small dimension eutectic Point packaging film is cut open, obtains bag L long2For 1/2nd films roll over footpath L1Low melting point packaging bag (71 DEG C of fusing point).
Embodiment 3
A kind of preparation method of low melting point packaging bag, the preparation method is comprised the following steps：
(1) grain is mixed：By default mass percent, following raw materials according is well mixed, obtains batch mixing：
90% ethylene-vinyl acetate copolymer, 2% silica, 8% composite anti-blocking masterbatch；
(2) blown film：Using inflation film manufacturing machine is by batch mixing heating and melting and is processed into material film, blow-up ratio is 4:1；
Then, using the type of cooling inside and outside film bubble, cooling treatment is carried out to material film at 15 DEG C, obtains low melting point bag Dress film；
(3) bag (as shown in Figure 1)：
1) along the length bearing of trend of low melting point packaging film, low melting point packaging film is carried out by default bag W wide (250mm) Cut, obtain multiple small dimension low melting point packaging films；
2) carry out bilateral heat-sealing to each small dimension low melting point packaging film, and along hot-sealing line 1 perpendicular bisector 2 by small dimension eutectic Point packaging film is cut open, obtains bag L long2For 1/2nd films roll over footpath L1Low melting point packaging bag (72 DEG C of fusing point).

Claims (9)

1. a kind of low melting point packaging film, it is characterised in that by mass percentage, is formulated and is：
Ethylene-vinyl acetate copolymer 90%；
Silica 2%；
Composite anti-blocking masterbatch 8%.
2. application of the low melting point packaging film as claimed in claim 1 in packaging bag is prepared.
3. application as claimed in claim 2, it is characterised in that the bag of the packaging bag is wide≤400mm, the bag of the packaging bag A length of film rolls over the half in footpath.
4. a kind of preparation method of low melting point packaging bag, it is characterised in that comprise the following steps：
(1) grain is mixed：By default mass percent, the raw material of low melting point packaging film as claimed in claim 1 is well mixed, obtained Obtain batch mixing；
(2) blown film：Using inflation film manufacturing machine is by batch mixing heating and melting and is processed into material film, material film obtains eutectic after cooling Point packaging film；
(3) bag：Low melting point packaging film is cut and sealed by default specification, the low melting point packaging bag is obtained.
5. preparation method as claimed in claim 4, it is characterised in that in step (2), the blow-up ratio of the blown film is 3~5: 1。
6. preparation method as claimed in claim 4, it is characterised in that in step (2), the blow-up ratio of the blown film is 4:1.
7. preparation method as claimed in claim 4, it is characterised in that in step (2), the cooling is using the inside and outside cooling of film bubble Mode.
8. preparation method as claimed in claim 4, it is characterised in that in step (2), the temperature of the cooling is less than 20 DEG C.
9. preparation method as claimed in claim 4, it is characterised in that in step (3), the bag includes：
1) along the length bearing of trend of low melting point packaging film, low melting point packaging film is cut by default bag is wide, is obtained many Individual small dimension low melting point packaging film；
2) carry out bilateral heat-sealing to each small dimension low melting point packaging film, and along hot-sealing line perpendicular bisector by small dimension eutectic point packaging Film is cut open, obtains the low melting point packaging bag that a length of 1/2nd film of bag rolls over footpath.
CN201611016872.2A 2016-11-18 2016-11-18 A kind of low melting point packaging film and its application in packaging bag is prepared Pending CN106750846A (en)

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Application Number Priority Date Filing Date Title
CN201611016872.2A CN106750846A (en) 2016-11-18 2016-11-18 A kind of low melting point packaging film and its application in packaging bag is prepared

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Application Number Priority Date Filing Date Title
CN201611016872.2A CN106750846A (en) 2016-11-18 2016-11-18 A kind of low melting point packaging film and its application in packaging bag is prepared

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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111348317A (en) * 2020-04-30 2020-06-30 仲铂新材料有限公司 Low-melting-point valve bag and manufacturing method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102286166A (en) * 2011-08-25 2011-12-21 江门市三硕新材料有限公司 Anti-adhesion electroconductive plastic for film blowing
CN102702606A (en) * 2012-06-25 2012-10-03 广州市金威龙实业股份有限公司 Anti-slip shrink film and preparation method thereof
CN103819806A (en) * 2014-02-17 2014-05-28 上海福助工业有限公司 Pure PE (polyethylene) single-layer plastic film, corner angle packaging bag prepared therefrom and production method thereof
CN104513423A (en) * 2015-01-26 2015-04-15 甘肃聚能环保科技有限公司 Multi-functional agricultural film heat-preservation resin master batch and preparation method thereof
CN104893091A (en) * 2015-06-26 2015-09-09 福建惠亿美环保材料科技有限公司 Super-transparent EVA film and production method thereof
CN105415551A (en) * 2015-12-10 2016-03-23 华南理工大学 Blown film inner and outer airflow collaborative cooling method and device based on chimney effect
CN105504446A (en) * 2015-12-31 2016-04-20 佛山佛塑科技集团股份有限公司 Foaming master batch and thickening type plastic film and corresponding preparation methods

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102286166A (en) * 2011-08-25 2011-12-21 江门市三硕新材料有限公司 Anti-adhesion electroconductive plastic for film blowing
CN102702606A (en) * 2012-06-25 2012-10-03 广州市金威龙实业股份有限公司 Anti-slip shrink film and preparation method thereof
CN103819806A (en) * 2014-02-17 2014-05-28 上海福助工业有限公司 Pure PE (polyethylene) single-layer plastic film, corner angle packaging bag prepared therefrom and production method thereof
CN104513423A (en) * 2015-01-26 2015-04-15 甘肃聚能环保科技有限公司 Multi-functional agricultural film heat-preservation resin master batch and preparation method thereof
CN104893091A (en) * 2015-06-26 2015-09-09 福建惠亿美环保材料科技有限公司 Super-transparent EVA film and production method thereof
CN105415551A (en) * 2015-12-10 2016-03-23 华南理工大学 Blown film inner and outer airflow collaborative cooling method and device based on chimney effect
CN105504446A (en) * 2015-12-31 2016-04-20 佛山佛塑科技集团股份有限公司 Foaming master batch and thickening type plastic film and corresponding preparation methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111348317A (en) * 2020-04-30 2020-06-30 仲铂新材料有限公司 Low-melting-point valve bag and manufacturing method thereof

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Address after: 261000 Zhoujiashabu 13, Dawenhe Tourism Development Zone, Anqiu City, Weifang City, Shandong Province

Applicant after: Zhongplatinum New Materials Co., Ltd.

Address before: 261000 Zhoujiashabu 13, Dawenhe Tourism Development Zone, Anqiu City, Weifang City, Shandong Province

Applicant before: Weifang Zhong Xin platinum Materials Co., Ltd.

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Application publication date: 20170531

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