CN109016750A - A kind of polyethylene embossing packaging film and its production technology - Google Patents
A kind of polyethylene embossing packaging film and its production technology Download PDFInfo
- Publication number
- CN109016750A CN109016750A CN201810831302.1A CN201810831302A CN109016750A CN 109016750 A CN109016750 A CN 109016750A CN 201810831302 A CN201810831302 A CN 201810831302A CN 109016750 A CN109016750 A CN 109016750A
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- Prior art keywords
- polyethylene
- ldpe
- low density
- density polyethylene
- packaging film
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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
- B32B27/06—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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The present invention relates to a kind of polyethylene embossing packaging film and its production technologies.The polyethylene embosses packaging film by carrying out embossed acquisition after the heated softening of polyvinyl blow molding, the polyvinyl blow molding includes corona layer, middle layer and hot sealing layer, the corona layer includes 48~52wt.% low density polyethylene (LDPE) (LDPE) and 48~52wt.% linear low density polyethylene (LLDPE), the middle layer includes linear low density polyethylene (LLDPE), and the hot sealing layer includes 32~36wt.% low density polyethylene (LDPE) (LDPE) and 64~68wt.% linear low density polyethylene (LLDPE).Polyethylene embossing packaging film of the present invention can show good stiffness effect, mist degree effect, heat seal strength, impact strength and other excellent physical mechanical properties with higher etc. compared to curtain coating graining film.
Description
Technical field
The invention belongs to technology field of membrane materials, it is specifically related to a kind of polyethylene embossing packaging film and its production technology.
Background technique
With the promotion of people's quality of life, consumer is not concerned only with product when buying the products such as daily necessities
Brand effect, while to the packaging of product also growing interest.Country's composite soft packaging material makes rapid progress at present, and packaging is increasingly
Thus fineness more attracts the attention of consumer.In order to effectively prevent product to be imitated, many manufacturing enterprises and packaging enterprise
Industry takes great effort in anti-fake direction.Currently, the graining film with antifalse effect used that circulates in the market is all made of
The tape casting production.Casting films are that a kind of tensionless winkler foundation of quenching production, the cast film of non-directional are cast by melt, are divided into simple
Curtain coating and multi-layer co-extruded two kinds of curtain coating.Used graining film mostly uses online curtain coating embossing mode to obtain currently on the market, should
Production method are as follows: by calibrator after film cooling, then carry out Corona Surface Treatment and embossing, then the mistake of trimming winding
Journey.This mode does not have heating device in embossing, and film embosses after curtain coating is cooling, and this mode is highly vulnerable to breakage film
Physical structure, and higher (general at least two space of a whole page) is lost in which.The major defect of curtain coating mode graining film is that material is soft
It is soft, stiffness effect is poor, impact strength is poor, film clarity is higher, and film heat sealability is general (not high pressure resistant).
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of polyethylene embossing packaging film and its production technologies.
In order to achieve the object of the present invention, the invention adopts the following technical scheme:
A kind of polyethylene embossing packaging film, the polyethylene emboss packaging film by being pressed after the heated softening of polyvinyl blow molding
Line processing obtains, and the polyvinyl blow molding includes corona layer, middle layer and hot sealing layer, and the corona layer includes 48~
52wt.% low density polyethylene (LDPE) (LDPE) and 48~52wt.% linear low density polyethylene (LLDPE), the middle layer packet
Include linear low density polyethylene (LLDPE), the hot sealing layer include 32~36wt.% low density polyethylene (LDPE) (LDPE) and 64~
68wt.% linear low density polyethylene (LLDPE).
Preferred embodiment: the corona layer includes 50wt.% low density polyethylene (LDPE) (LDPE) and 50wt.% linea low density
Polyethylene (LLDPE), the hot sealing layer include that 34wt.% low density polyethylene (LDPE) (LDPE) and 66wt.% linea low density are poly-
Ethylene (LLDPE).
Further scheme: the low density polyethylene (LDPE) (LDPE) in the corona layer and hot sealing layer is SUMITOMO CHEMICAL production and grain
The sub- trade mark is the product of L420, and the linear low density polyethylene (LLDPE) in the corona layer and hot sealing layer is raw for Dow
Produce and the particle trade mark be the product of 2045G, the linear low density polyethylene (LLDPE) of the middle layer be Dow produce and
The particle trade mark is the product of 5538G.
Further scheme: the corona layer of the polyvinyl blow molding with a thickness of 12 microns, intermediate layer thickness be 16 microns, heat-sealing
Layer is with a thickness of 12 microns；The polyethylene embossing packaging film is with a thickness of 50 microns.
A kind of production technology of the polyethylene embossing packaging film, including following procedure of processing:
Step 1, the raw particles of the corona layer, middle layer and hot sealing layer are added separately to melt in extruder and are squeezed
Out, by obtaining the polyvinyl blow molding after blown film, cooling and shaping；
Step 2, the polyvinyl blow molding unreels and passes through after heating roller reaches softening point and embossed again by dandy roll
Processing carries out cooling treatment by chill roll later and obtains the polyethylene embossing packaging film.
The beneficial effects of the present invention are:
(1) polyethylene embossing packaging film of the present invention is by carrying out embossed acquisition after the heated softening of polyvinyl blow molding, originally
Invention polyethylene, which embosses packaging film, can show good stiffness effect, mist degree effect compared to curtain coating graining film, have higher
Heat seal strength, impact strength and other excellent physical mechanical properties etc..
(2) LDPE in corona layer of the present invention makes polyethylene embossing packaging film have good flattening effect, good
Surface corona treatment effect, it is ensured that the planarization of film；The middle layer can both have been mentioned using the metallocene LLDPE of middle-high density
The stiffness effect of polyethylene embossing packaging film entirety is risen, and the good heat seal strength of hot sealing layer can be supported；The hot sealing layer makes
The heat seal strength of internal layer can be improved with metallocene LLDPE, to prevent appearance fried packet, bale broken etc. in film use process from asking
Topic.
(3) present invention uses the thickness ratio of 1:1.25:1, and the higher key of intermediate layer thickness ratio is can be big
The big stiffness for promoting polyethylene embossing packaging film supports effect, it can effective to improve polyethylene embossing packaging film single side curling
Phenomenon, and it is easy to batch machining production.
(4) polyethylene embossing packaging film of the present invention embosses method using offline hot pressing, i.e., reaches soft by heating roller in film
It is embossed again after changing point, the physical structure that can be very good protective film in this way (relative to cold pressing mode, can destroy film
Physical structure), and do not change the physical mechanical property of film, to reach a kind of concave-convex effect.In embossing processes can by pair
The surface treatment of dandy roll, forms the figure line effect of certain rule in film embossing, to play a kind of anti-fake function well
Energy.
Detailed description of the invention
Fig. 1 is production process route figure of the present invention.
Fig. 2 is embossed cotton schematic device.
Attached meaning marked in the figure is as follows:
11- let off roll；12- heating roller；13- pressure roller；14- dandy roll；15- chill roll；16- wind-up roll.
Specific embodiment
More specific detail is made to technical solution of the present invention below with reference to embodiment.
Raw materials used source is as shown in table 1 below in following embodiment:
Table 1
The production technology of polyethylene embossing packaging film of the present invention, including following procedure of processing:
Step 1, the raw particles of the corona layer, middle layer and hot sealing layer are added separately to melt in extruder and are squeezed
Out, by obtaining the polyvinyl blow molding, 40 microns of the polyvinyl blow molding thickness after blown film, cooling and shaping.
The preparation of the polyvinyl blow molding is respectively according to the Formulation Implementation in following table 2:
Table 2
| Film layer | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Corona layer | 50wt.%L420+50wt.%2045G | 48wt.%L420+52wt.%2045G | 52wt.%L420+48wt.%2045G |
| Middle layer | 100wt.%5538G | 100wt.%5538G | 100wt.%5538G |
| Hot sealing layer | 34wt.%L420+66wt.%2045G | 32wt.%L420+68wt.%2045G | 36wt.%L420+64wt.%2045G |
Step 2, the polyvinyl blow molding unreels and passes through after heating roller reaches softening point and embossed again by dandy roll
Processing carries out cooling treatment by chill roll later and obtains the polyethylene embossing packaging film.
The polyethylene obtained after the polyvinyl blow molding embossed is embossed 50 microns of packaging film finished product thickness, the present invention
The particular technique index that polyethylene embosses packaging film finished product is as shown in table 3 below:
Table 3
Claims (5)
1. a kind of polyethylene embosses packaging film, it is characterised in that: it is heated soft by polyvinyl blow molding that the polyethylene embosses packaging film
Embossed acquisition is carried out after change, the polyvinyl blow molding includes corona layer, middle layer and hot sealing layer, and the corona layer includes
48~52wt.% low density polyethylene (LDPE) (LDPE) and 48~52wt.% linear low density polyethylene (LLDPE), the centre
Layer include linear low density polyethylene (LLDPE), the hot sealing layer include 32~36wt.% low density polyethylene (LDPE) (LDPE) and
64~68wt.% linear low density polyethylene (LLDPE).
2. polyethylene as described in claim 1 embosses packaging film, it is characterised in that: the corona layer includes 50wt.% low close
It spends polyethylene (LDPE) and 50wt.% linear low density polyethylene (LLDPE), the hot sealing layer includes 34wt.% low-density
Polyethylene (LDPE) and 66wt.% linear low density polyethylene (LLDPE).
3. polyethylene as described in claim 1 embosses packaging film, it is characterised in that: the corona layer is low close in hot sealing layer
Degree polyethylene (LDPE) be SUMITOMO CHEMICAL produce and the particle trade mark be L420 product, the corona layer with it is linear in hot sealing layer
Low density polyethylene (LDPE) (LLDPE) be Dow production and the particle trade mark be 2045G product, the middle layer it is linear low close
The product that degree polyethylene (LLDPE) is Dow production and the particle trade mark is 5538G.
4. polyethylene as described in claim 1 embosses packaging film, it is characterised in that: the corona layer thickness of the polyvinyl blow molding
For 12 microns, intermediate layer thickness be 16 microns, hot sealing layer is with a thickness of 12 microns；The polyethylene embossing packaging film is micro- with a thickness of 50
Rice.
5. a kind of production technology for embossing packaging films such as the described in any item polyethylene of Claims 1 to 4, it is characterised in that including
Following procedure of processing:
Step 1, the raw particles of the corona layer, middle layer and hot sealing layer are added separately to melting extrusion in extruder,
By obtaining the polyvinyl blow molding after blown film, cooling and shaping；
Step 2, the polyvinyl blow molding, which unreels and passes through after heating roller reaches softening point, carries out embossed by dandy roll again,
Cooling treatment is carried out by chill roll later and obtains the polyethylene embossing packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810831302.1A CN109016750A (en) | 2018-07-26 | 2018-07-26 | A kind of polyethylene embossing packaging film and its production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810831302.1A CN109016750A (en) | 2018-07-26 | 2018-07-26 | A kind of polyethylene embossing packaging film and its production technology |
Publications (1)
| Publication Number | Publication Date |
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| CN109016750A true CN109016750A (en) | 2018-12-18 |
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| CN201810831302.1A Pending CN109016750A (en) | 2018-07-26 | 2018-07-26 | A kind of polyethylene embossing packaging film and its production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080042A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Auxiliary agent composition and preparation method thereof, linear low-density polyethylene composition and preparation method thereof, and polyethylene casting packaging film |
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