CN105034511B - Environment-friendly vacuum compressed bags and production process thereof - Google Patents

Environment-friendly vacuum compressed bags and production process thereof Download PDF

Info

Publication number
CN105034511B
CN105034511B CN201510449329.0A CN201510449329A CN105034511B CN 105034511 B CN105034511 B CN 105034511B CN 201510449329 A CN201510449329 A CN 201510449329A CN 105034511 B CN105034511 B CN 105034511B
Authority
CN
China
Prior art keywords
layer
environment
vacuum compression
compression bag
friendly type
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.)
Active
Application number
CN201510449329.0A
Other languages
Chinese (zh)
Other versions
CN105034511A (en
Inventor
陈亦锋
鲁听
陈红央
劳梦斌
邹佳沣
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.)
NINGBO HUAFANG PACKAGE CO Ltd
Original Assignee
NINGBO HUAFANG PACKAGE 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 NINGBO HUAFANG PACKAGE CO Ltd filed Critical NINGBO HUAFANG PACKAGE CO Ltd
Priority to CN201510449329.0A priority Critical patent/CN105034511B/en
Publication of CN105034511A publication Critical patent/CN105034511A/en
Application granted granted Critical
Publication of CN105034511B publication Critical patent/CN105034511B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B32B27/06—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
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028—Stretching, elongating

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Bag Frames (AREA)
  • Wrappers (AREA)

Abstract

The invention provides a production process of environment-friendly vacuum compressed bags. The production process is characterized in that five or more layers of plastic-uptake deep-forming packaging film materials are adopted, therefore the vacuum compressed bags can achieve a required barrier property, and in addition, a cycloolefin/ethylene copolymer and polyethylene glycol terephthalate are melted for coextru-lamination by adopting five or more layers co-extrusion processing, so that a multi-layer co-extruded film which is excellent in both barrier property and strength is obtained, and then the vacuum compressed bags with the barrier property and strength meeting the use requirements can be obtained by cutting and fusion welding.

Description

A kind of environment-friendly type vacuum compression bag and its production technology
Technical field
The present invention relates to plastics packed technical field, the more particularly to production technology of environment-friendly type vacuum compression bag.
Background technology
The operation principle of vacuum compression bag be compressed bag inside air take away (as pressing sponge will reduce) from And reduced volume, original inner matter for expanding and other items is flattened using atmospheric pressure, isolate outside air.Compressed bag energy It is enough easily to save 75% space, effectively expand the space of collection, and reach the effect of fresh-keeping, dust-proof, mould proof, moistureproof, insect prevention.Mesh Front typical case's application is the vacuum compression collecting bag of cotton-wadded quilt and medicated clothing.
Traditional vacuum compression bag is made using monolayer or few layer co-extrusion plastic packaging film, its bad mechanical strength, thermostability Energy is not enough, gas gas barrier properties are not good, mainly using the single macromolecular material such as polyethylene, polypropylene, PVC, polyester by unidirectional Or biaxial tension is prepared from, minority technologically advanced enterprise has started to adopt polyethylene with polypropylene for raw material, by three layers altogether Extruding process prepares packing articles.
The content of the invention
In order to solve above-mentioned technical problem, the vacuum compression bag of the present invention adopts the multilamellar plastic uptake plutonic type of five layers and the above Packaging membrane material ensures which reaches the barrier of needs, using five layers and above coextrusion process by cycloolefines/ethylene copolymer ization thing, poly- Ethylene glycol terephthalate carries out melting coextru-lamination, obtains all splendid PP TYPE of barrier and intensity, then passes through Cut, melting welding obtains the vacuum compression bag that barrier intensity all reaches use requirement.
A kind of production technology of environment-friendly type vacuum compression bag, comprises the following steps that：The production of PP TYPE is carried out first, Then the production of environment-friendly type vacuum compression bag is carried out, is comprised the steps：
(1) PP TYPE rewinding：Before rewinding machine work, initial tension value and the tension decay curve of wind-up roll are set, The input linear velocity of setting friction roller, PP TYPE is transported on wind-up roll, and pivoting friction roller is adjusted so that multi-layer co-extruded The tension force of film reaches design load, and then starting rewinding machine carries out rewinding；
(2) PP TYPE cuts：PP TYPE after rewinding is opened guillotine is delivered to through translation conveying roller, Cutting limiting plate carries out moving horizontally positioning according to film thickness, it is ensured that cutting blade vertically, carries out cutting into conjunction according to film thickness The multi-layer co-extruded diaphragm of suitable size；
(3) sealing chain is installed the side of multi-layer co-extruded diaphragm, vacuum pumping hole is arranged on the front of multi-layer co-extruded diaphragm；
(4) remaining side of multi-layer co-extruded diaphragm is heated into into bag, obtains environment-friendly type vacuum compression bag；
(5) barrier inspection is carried out to environment-friendly type vacuum compression bag, and whether test gas barrier property meets the requirements, reject Waste product；
(6) intensity sampling observation is carried out to environment-friendly type vacuum compression bag, rejects intensity production batch not up to standard；
(7) to checking qualified environment-friendly type vacuum compression bag to carry out packaging and storage.
It is further preferred that PP TYPE includes internal layer A, dielectric layer B, intermediate layer C, dielectric layer D, outer layer from inside to outside E, its production comprise the steps：
(1) purchasing of raw materials：Appropriate raw material is purchased according to yield, raw material includes cycloolefines/ethylene copolymer ization thing, gathers to benzene two Formic acid glycol ester, cycloolefines/ethylene copolymer ization thing from metallocene catalyst by ethylene and norborene combined polymerization obtain it is non- Crystallinity transparent resin；
(2) dispensing：Internal layer A adopts mass ratio for 1:5 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate Blend is raw material；Outer layer E adopts mass ratio for 1:10 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate are altogether Mixed thing is used as raw material；Intermediate layer C is made up of alpha-olefine polymers substantially, and this kind of alpha-olefine polymers include 60-90% weight portions The butylene selected from polypropylene, polyethylene, the polymer of the linear low density polyethylene of metallocene catalyst and 10-40% weight portions Copolymer or terpolymer；For dielectric layer B and dielectric layer D polymer be fusing point be 90-150 DEG C of alpha-olefine polymerizing Thing, its stretch modulus are higher than 15MPa；
(3) multilayered molten co-extrusion：Each layer raw material is sent to into heating in the coextrusion film blowing unit of the correspondence number of plies and is melt into polymerization Thing melt, is then closed to the layer stackup in co-extrusion die head by each laminar flow, is combined into co-extrusion film；
(4) flow casting molding：Film is extruded by casting head, plastics sucking moulding, while using tentering in machine and transverse direction Machine is stretched；
(5) cooling shaping：Cooled and solidified using chill roll, used in chill roll, water circulation is radially cooled down.
It is further preferred that PP TYPE is divided into seven layers from inside to outside, respectively hot sealing layer A1, internal layer A, dielectric layer B, Intermediate layer C, dielectric layer D, outer layer E, weathering layer E1.
It is further preferred that hot sealing layer A1 using 30-60% weight portions raw material, the raw material be divided into metallocene polypropylene and The modified polypropylene copolymer of polyisobutylene and polyethylene terephthalate blend；Weathering layer E1 is common using copolymer nylon The modified copolymer nylon copolymerization of the tissue adhesion master batch of polymers, the specially amorphous nylons of 15%-25% weight portions and 1-1.5% Thing.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Specific embodiment
The present invention is further described with reference to specific embodiment, but does not limit the invention to these tools Body embodiment.One skilled in the art would recognize that present invention encompasses being potentially included in Claims scope All alternatives, improvement project and equivalents.
Embodiment 1
A kind of production technology of environment-friendly type vacuum compression bag, comprises the following steps that：
The production of PP TYPE is carried out first, and described PP TYPE is plastic uptake depth shaping packing film material, by interior And it is divided into outward five layers, respectively internal layer A, dielectric layer B, intermediate layer C, dielectric layer D, outer layer E comprise the steps：
(1) purchasing of raw materials：Appropriate cycloolefines/ethylene copolymer ization thing, polyethylene terephthalate are purchased according to yield, The transparent tree of amorphism that ethylene and norborene combined polymerization are obtained by cycloolefines/ethylene copolymer ization thing from metallocene catalyst Fat；
(2) dispensing：Internal layer A adopts mass ratio for 1:5 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate Blend is raw material；Outer layer E adopts mass ratio for 1:10 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate are altogether Mixed thing is used as raw material；Intermediate layer C is made up of alpha-olefine polymers substantially, and this kind of alpha-olefine polymers include 60-90% weight portions The butylene selected from polypropylene, polyethylene, the polymer of the linear low density polyethylene of metallocene catalyst and 10-40% weight portions Copolymer or terpolymer；Dielectric layer B and dielectric layer D help to ensure that the bonding between each layer, increase film strength, preferably For dielectric layer B and dielectric layer D polymer be fusing point be 90-150 DEG C of alpha-olefine polymers, its stretch modulus is higher than 15MPa；
(3) multilayered molten co-extrusion：Each layer raw material is sent to into heating in five-layer co-squeezing blown film unit and is melt into polymer melt, Then closed to the layer stackup in co-extrusion die head by each laminar flow, be combined into co-extrusion film；
(4) flow casting molding：Film is extruded by casting head, plastics sucking moulding, while using tentering in machine and transverse direction Machine is stretched；
(5) cooling shaping：Cooled and solidified using chill roll, used in chill roll, water circulation is radially cooled down；
Then the production of environment-friendly type vacuum compression bag is carried out, is comprised the steps：
(1) PP TYPE rewinding：Before rewinding machine work, initial tension value and the tension decay curve of wind-up roll are set, The input linear velocity of setting friction roller, PP TYPE is transported on wind-up roll, and pivoting friction roller is adjusted so that multi-layer co-extruded The tension force of film reaches design load, and then starting rewinding machine carries out rewinding；
(2) PP TYPE cuts：PP TYPE after rewinding is opened guillotine is delivered to through translation conveying roller, Cutting limiting plate carries out moving horizontally positioning according to film thickness, it is ensured that cutting blade vertically, carries out cutting into conjunction according to film thickness The multi-layer co-extruded diaphragm of suitable size；
(3) sealing chain is installed the side of multi-layer co-extruded diaphragm, vacuum pumping hole is arranged on the front of multi-layer co-extruded diaphragm；
(4) remaining side of multi-layer co-extruded diaphragm is heated into into bag, obtains environment-friendly type vacuum compression bag；
(5) barrier inspection is carried out to environment-friendly type vacuum compression bag, and whether test gas barrier property meets the requirements, reject Waste product；
(6) intensity sampling observation is carried out to environment-friendly type vacuum compression bag, rejects intensity production batch not up to standard；
(7) to checking qualified environment-friendly type vacuum compression bag to carry out packaging and storage.
Embodiment 2
Different from embodiment 1, the PP TYPE for using is seven layers of PP TYPE, is divided into seven layers from inside to outside, point Not Wei hot sealing layer A1, internal layer A, dielectric layer B, intermediate layer C, dielectric layer D, outer layer E, weathering layer E1, comprise the steps：
(1) purchasing of raw materials：Appropriate cycloolefines/ethylene copolymer ization thing, polyethylene terephthalate are purchased according to yield, The transparent tree of amorphism that ethylene and norborene combined polymerization are obtained by cycloolefines/ethylene copolymer ization thing from metallocene catalyst Fat；
(2) dispensing：Internal layer A adopts mass ratio for 1:5 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate Blend is raw material；Outer layer E adopts mass ratio for 1:10 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate are altogether Mixed thing is used as raw material；Intermediate layer C is made up of alpha-olefine polymers substantially, and this kind of alpha-olefine polymers include 60-90% weight portions The butylene selected from polypropylene, polyethylene, the polymer of the linear low density polyethylene of metallocene catalyst and 10-40% weight portions Copolymer or terpolymer；Dielectric layer B and dielectric layer D help to ensure that the bonding between each layer, increase film strength, preferably For dielectric layer B and dielectric layer D polymer be fusing point be 90-150 DEG C of alpha-olefine polymers, its stretch modulus is higher than 15MPa；Raw materials of the hot sealing layer A1 using 30-60% weight portions, it is modified that the raw material is divided into metallocene polypropylene and polyisobutylene Polypropylene copolymer and polyethylene terephthalate blend；Weathering layer E1 adopts copolymer nylon copolymer, specially The modified copolymer nylon copolymer of the tissue adhesion master batch of the amorphous nylons of 15%-25% weight portions and 1-1.5%.
Remaining step is same as Example 1.
The environment-friendly type vacuum compression bag produced according to present invention process is tested, and the Main Economic technical specification for obtaining is such as Under：
1) the light shine characteristic of product：By PV1303 light shine standard gauges 4 grades of the cycle color fastness of provisioning request 5；
2) product is heat-resisting, cold tolerance：Product each storage 48 hours in 110 ± ± 2 DEG C, -40 ± 2 DEG C, product is without depositing The change that is visible and (or) affecting function in shape, color and surface quality；
3) product gas gas barrier properties：The gas barrier property of packaging film meets Q/NHF 01-2011《Medical apparatus and instruments plastic uptake Packaging film》Test request.
4) product strength characteristic energy：Tensile strength is not less than 40MPa.

Claims (4)

1. a kind of production technology of environment-friendly type vacuum compression bag, comprises the following steps that：The production of PP TYPE is carried out first, so The production of environment-friendly type vacuum compression bag is carried out afterwards, is comprised the steps：
(1) PP TYPE rewinding：Before rewinding machine work, initial tension value and the tension decay curve of wind-up roll, setting are set The input linear velocity of friction roller, PP TYPE is transported on wind-up roll, and pivoting friction roller is adjusted so that PP TYPE Tension force reaches design load, and then starting rewinding machine carries out rewinding；
(2) PP TYPE cuts：PP TYPE after rewinding is opened and guillotine is delivered to through translation conveying roller, cut Limiting plate carries out moving horizontally positioning according to film thickness, it is ensured that cutting blade vertically, carries out cutting into properly greatly according to film thickness Little multi-layer co-extruded diaphragm；
(3) sealing chain is installed the side of multi-layer co-extruded diaphragm, vacuum pumping hole is arranged on the front of multi-layer co-extruded diaphragm；
(4) remaining side of multi-layer co-extruded diaphragm is heated into into bag, obtains environment-friendly type vacuum compression bag；
(5) barrier inspection is carried out to environment-friendly type vacuum compression bag, and whether test gas barrier property meets the requirements, removing waste Product；
(6) intensity sampling observation is carried out to environment-friendly type vacuum compression bag, rejects intensity production batch not up to standard；
(7) to checking qualified environment-friendly type vacuum compression bag to carry out packaging and storage；
The PP TYPE includes internal layer A, dielectric layer B, intermediate layer C, dielectric layer D, outer layer E from inside to outside, and its production includes Following steps：
(1) purchasing of raw materials：Appropriate raw material is purchased according to yield, raw material includes cycloolefines/ethylene copolymer ization thing, poly terephthalic acid Glycol ester, cycloolefines/ethylene copolymer ization thing from metallocene catalyst by ethylene and norborene combined polymerization obtain it is noncrystalline Property transparent resin；
(2) dispensing：Internal layer A adopts mass ratio for 1:5 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate blending Thing is raw material；Outer layer E adopts mass ratio for 1:10 cycloolefines/ethylene copolymer ization thing and polyethylene terephthalate blend As raw material；Intermediate layer C is made up of alpha-olefine polymers substantially, choosing of this kind of alpha-olefine polymers comprising 60-90% weight portions From the butene of polypropylene, polyethylene, the polymer of the linear low density polyethylene of metallocene catalyst and 10-40% weight portions Thing or terpolymer；For dielectric layer B and dielectric layer D polymer be fusing point be 90-150 DEG C of alpha-olefine polymers, its Stretch moduluses are higher than 15MPa；
(3) multilayered molten co-extrusion：Each layer raw material is sent to heating in the coextrusion film blowing unit of the correspondence number of plies to be melt into polymer and melt Body, is then closed to the layer stackup in co-extrusion die head by each laminar flow, is combined into co-extrusion film；
(4) flow casting molding：Film is extruded by casting head, plastics sucking moulding, while drawn using stenter in machine and transverse direction Stretch；
(5) cooling shaping：Cooled and solidified using chill roll, used in chill roll, water circulation is radially cooled down.
2. a kind of production technology of environment-friendly type vacuum compression bag as claimed in claim 1, it is characterised in that：It is described multi-layer co-extruded Film is divided into seven layers from inside to outside, respectively hot sealing layer A1, internal layer A, dielectric layer B, intermediate layer C, dielectric layer D, outer layer E, weathering layer E1。
3. a kind of production technology of environment-friendly type vacuum compression bag as claimed in claim 2, it is characterised in that：Hot sealing layer A1 is adopted The raw material of 30-60% weight portions, the raw material are divided into the modified polypropylene copolymer of metallocene polypropylene and polyisobutylene and gather right PET blend；Weathering layer E1 adopts copolymer nylon copolymer, and the specially nothing of 15%-25% weight portions is fixed The modified copolymer nylon copolymer of the tissue adhesion master batch of type nylon and 1-1.5%.
4. claims 1 to 3 it is arbitrary as described in environment-friendly type vacuum compression bag obtained in production technology.
CN201510449329.0A 2015-07-27 2015-07-27 Environment-friendly vacuum compressed bags and production process thereof Active CN105034511B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510449329.0A CN105034511B (en) 2015-07-27 2015-07-27 Environment-friendly vacuum compressed bags and production process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510449329.0A CN105034511B (en) 2015-07-27 2015-07-27 Environment-friendly vacuum compressed bags and production process thereof

Publications (2)

Publication Number Publication Date
CN105034511A CN105034511A (en) 2015-11-11
CN105034511B true CN105034511B (en) 2017-03-22

Family

ID=54441743

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510449329.0A Active CN105034511B (en) 2015-07-27 2015-07-27 Environment-friendly vacuum compressed bags and production process thereof

Country Status (1)

Country Link
CN (1) CN105034511B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112895371A (en) * 2018-08-09 2021-06-04 桐乡市凯瑞包装材料有限公司 Manufacturing method of multipurpose easily-degradable improved storage bag
CN109294028B (en) * 2018-08-09 2020-11-27 桐乡市凯瑞包装材料有限公司 Manufacturing process of biodegradable express bag
CN110254933B (en) * 2019-05-28 2020-08-11 余姚市华寅包装材料有限公司 Vacuum compression bag with antibacterial function and production process thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202846980U (en) * 2012-10-12 2013-04-03 海宁市汇龙塑料有限公司 Composite film roll capable of exhausting air easily
CN202965210U (en) * 2012-12-29 2013-06-05 常州市达力塑料机械有限公司 Film casting machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7223461B2 (en) * 2002-11-22 2007-05-29 Sealed Air Corporation (Us) High strength high gas barrier cellular cushioning product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202846980U (en) * 2012-10-12 2013-04-03 海宁市汇龙塑料有限公司 Composite film roll capable of exhausting air easily
CN202965210U (en) * 2012-12-29 2013-06-05 常州市达力塑料机械有限公司 Film casting machine

Also Published As

Publication number Publication date
CN105034511A (en) 2015-11-11

Similar Documents

Publication Publication Date Title
CN106183292B (en) Three-layer co-extruded quick biaxial tension wide cut polyethylene co-extruded film and preparation method thereof
CN106739356B (en) A kind of multi-layer co-extruded shrink film and production technology
CA2557712A1 (en) Machine-direction oriented multilayer films
CN104772956B (en) A kind of light-weight packed film and preparation method thereof
CN107696623B (en) Heat shrinkage film suitable for automatic quick packaging of production line
CN102350794A (en) Method for preparing polyolefin-based barrier material product
CN105034511B (en) Environment-friendly vacuum compressed bags and production process thereof
KR20200077666A (en) Film for packaging food
CN102225646A (en) Multilayer coextrusion medical blister composite packaging film and preparation method thereof
CN111231470A (en) Multilayer co-extruded polyethylene heat shrinkable film and preparation method thereof
CN104371597A (en) Preparation method of polypropylene type bonding resin for multi-layer coextrusion barrier packaging
CN102285174A (en) Composite packaging film and preparation method thereof
CN102173149A (en) Antibacterial composite film used for vacuum packing of household articles and preparation method thereof
CN201587630U (en) Extinction blocking five-layer coextruded composite film
CN105196679B (en) Multilayer plastic uptake deep forming packaging film material and production technology thereof
CN106476387A (en) Super functional multi layer co-extrusion film and preparation method thereof
CN106626655B (en) Polyolefin biaxial tension vermicelli film and preparation method thereof
CN105001488A (en) Plastic film blending material, and processing method thereof
CN112208178A (en) Polyolefin film for express bubble bag and preparation method thereof
CN111819237B (en) Sealing resin composition, multilayer film for sealing, heat-sealable laminate film, and package
CN105252840A (en) Vacuum compression bag and manufacturing method thereof
CN113352719B (en) Online forming shrinkage base film and cover film and preparation method thereof
CN105235345B (en) Blister packaging film for steam sterilization and manufacturing method thereof
CN105216418B (en) A kind of plastic packaging film and preparation method thereof for gamma-rays disinfection
CN113071179A (en) High barrier tape stretch film and method of producing the same

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20151111

Assignee: NINGBO WEIFENG NEW MATERIAL Co.,Ltd.

Assignor: NINGBO HUAFENG PACKAGE CO.,LTD.

Contract record no.: X2021330000736

Denomination of invention: An environment-friendly vacuum compression bag and its production process

Granted publication date: 20170322

License type: Common License

Record date: 20211109

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20151111

Assignee: Ningbo Weifeng Environmental Protection Group Co.,Ltd.

Assignor: NINGBO HUAFENG PACKAGE CO.,LTD.

Contract record no.: X2023330000442

Denomination of invention: An environmentally friendly vacuum compression bag and its production process

Granted publication date: 20170322

License type: Common License

Record date: 20230724