CN108032574A - A kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof - Google Patents

A kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof Download PDF

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Publication number
CN108032574A
CN108032574A CN201711271877.4A CN201711271877A CN108032574A CN 108032574 A CN108032574 A CN 108032574A CN 201711271877 A CN201711271877 A CN 201711271877A CN 108032574 A CN108032574 A CN 108032574A
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China
Prior art keywords
parts
sealing film
top layer
packaging
foodstuff
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Pending
Application number
CN201711271877.4A
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Chinese (zh)
Inventor
宋荣鑫
吴敏锋
宾士武
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Guangzhou Rong Sheng Packing Material Co Ltd
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Guangzhou Rong Sheng Packing Material Co Ltd
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Priority to CN201711271877.4A priority Critical patent/CN108032574A/en
Publication of CN108032574A publication Critical patent/CN108032574A/en
Pending legal-status Critical Current

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    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • 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
    • B32B2250/03—3 layers
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • 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
    • B32B2439/70—Food packaging
    • 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
    • C08K3/38—Boron-containing compounds
    • C08K2003/382—Boron-containing compounds and nitrogen
    • C08K2003/385—Binary compounds of nitrogen with boron
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to technical field of polymer materials, more particularly to a kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof, heat-sealing film prepared by the present invention, not only glossiness is high, and the problem of food packaging film oxygen resistance and moisture barrier property are poor, mechanical performance is low can be overcome, oxygen permeating amount can be reduced to greatest extent, and just have the wet function of high resistant, breeding is inhibited bacteria, prevents being aoxidized and being utilized by bacterium for sugar, protein and grease.

Description

A kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of high glaze heat-sealing film for packaging for foodstuff and Its preparation method.
Background technology
At present, packaging for foodstuff manufacture has started to step into the high-tech industry field of World Focusing.In China, as food Plastic flexible packaging material and its manufacturing technology have also obtained suitable attention and development.
Include following reason from packaging angle analysis food spoilage, growth, the breeding of bacterium, are food apoilages First main cause, and the presence of oxygen be bacteria live, breeding necessary condition；Sugar, protein, oil in food The component oxidation deterioration such as fat, vitamin, is another main cause of spoilage, and the genuine volatilization of food is lost, is outer Portion's peculiar smell scurries into the common cause that product off taste is also food spoilage, water-holding capacity is unstable be also food spoilage another is main Reason, the increase of original moisture or loses the original local flavor that can all seriously affect food in food.
For the class of display packing product, market not only requires packaging film transparency good, also requires glossiness good.It is existing Packaging film glossiness 95% or so, still need to the polypropylene thermal sealer of glossiness higher, while the heat-sealing film currently on the market Oxygen permeating amount can be reduced to greatest extent, and just has the wet function of high resistant, to meet preferably packaging demand.
The content of the invention
It is an object of the invention to provide a kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof.The present invention The heat-sealing film of preparation, not only glossiness is high, and can overcome that food packaging film oxygen resistance and moisture barrier property be poor, mechanicalness Can be low the problem of, oxygen permeating amount can be reduced to greatest extent, and just have the wet function of high resistant, inhibit bacteria breeding, prevent sugar, egg White matter and grease being aoxidized and being utilized by bacterium.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of high glaze heat-sealing film for packaging for foodstuff, is made of top layer A, intermediate layer B and top layer C, wherein, top layer A is under The raw material for stating parts by weight meter is configured to：92-95 parts of ternary polymerized polypropylene, 1-2 parts of silicone, 2-4 parts of resist blocking and that masterbatch, Ludox 2-5 parts, 0.5-0.8 parts of nm-class boron nitride；Intermediate layer B is configured to by the raw material of following weight parts meter：Homopolypropylene 98-99 Part, 2-3 parts of glyceryl monostearate；Top layer C is configured to by the raw material of following weight parts meter：96-98 parts of ternary polymerized polypropylene, 2-5 parts of silicone, 11-13 parts of resist blocking and that masterbatch, 5-7 parts of Ludox, 1-2 parts of nm-class boron nitride.
The gross thickness of the high glaze heat-sealing film is 15-20 μm, wherein, the thickness of top layer A is 0.3-0.5 μm, intermediate layer B Thickness be 14.4-19.0 μm, the thickness of top layer C is 0.3-0.5 μm.
The high glaze heat-sealing film for packaging for foodstuff be by dispensing, extrusion, slab, longitudinal stretching, cross directional stretch, Winding is prepared；
The draw ratio scope of the longitudinal stretching process is 8-9；The draw ratio scope of the cross directional stretch process is 11- 13；Extruder temperature in the extrusion operation is：180-200℃；Slab machine cooling temperature in the slab process is 15- 20℃；Preheating temperature in the longitudinal stretching process is 90-100 DEG C, draft temperature is 95-100 DEG C；The cross directional stretch work Preheating temperature in sequence is 130-180 DEG C, draft temperature is 150-160 DEG C, setting temperature is 140-150 DEG C.
The remarkable advantage of the present invention is：
The present invention adds Ludox and nm-class boron nitride in the skin-material of heat-sealing film, and the addition of Nano silica sol can be in heat The surface of sealer forms complementary (as the concavo-convex alternate) interfacial structure of geometries in the range of nanoscale, show double thin property and High gloss, is capable of the infiltration of effectively shield water and air, avoids Food Oxidation from going bad.But Ludox is in film forming procedure is stretched Volume contraction is larger so that interfacial structure is cracking, influences the effect and glossiness of heat-sealing film shielding water and air.Nanometer Boron nitride can form hydrogen bond with Ludox, effectively suppress volume contraction and cracking in its film forming procedure, by Ludox and nanometer Boron nitride is used in conjunction with the skin-material of heat-sealing film, be now provided with the glossiness of heat-sealing film and is shielded water and air Effect.
Embodiment
For the further open rather than limitation present invention, below in conjunction with example, the present invention is described in further detail.
Embodiment 1
A kind of high glaze heat-sealing film for packaging for foodstuff, is made of top layer A, intermediate layer B and top layer C, wherein, top layer A is under The raw material for stating parts by weight meter is configured to：92 parts of ternary polymerized polypropylene, 1 part of silicone, 2 parts of resist blocking and that masterbatch, 2 parts of Ludox, receive 0.5 part of boron nitride of rice；Intermediate layer B is configured to by the raw material of following weight parts meter：98 parts of homopolypropylene, glyceryl monostearate 2 parts；Top layer C is configured to by the raw material of following weight parts meter：96 parts of ternary polymerized polypropylene, 2 parts of silicone, resist blocking and that masterbatch 11 Part, 5 parts of Ludox, 1 part of nm-class boron nitride.
The gross thickness of the high glaze heat-sealing film is 15 μm, wherein, the thickness of top layer A is 0.3 μm, the thickness of intermediate layer B For 14.4 μm, the thickness of top layer C is 0.3 μm.
The high glaze heat-sealing film for packaging for foodstuff be by dispensing, extrusion, slab, longitudinal stretching, cross directional stretch, Winding is prepared；
The draw ratio scope of the longitudinal stretching process is 8；The draw ratio scope of the cross directional stretch process is 11；It is described Extruder temperature in extrusion operation is：180℃；Slab machine cooling temperature in the slab process is 15 DEG C；The longitudinal direction Preheating temperature in stretching process is 90 DEG C, draft temperature is 95 DEG C；Preheating temperature in the cross directional stretch process is 130 DEG C, draft temperature be 150 DEG C, setting temperature be 140 DEG C.
Embodiment 2
A kind of high glaze heat-sealing film for packaging for foodstuff, is made of top layer A, intermediate layer B and top layer C, wherein, top layer A is under The raw material for stating parts by weight meter is configured to：93 parts of ternary polymerized polypropylene, 2 parts of silicone, 3 parts of resist blocking and that masterbatch, 3 parts of Ludox, receive 0.6 part of boron nitride of rice；Intermediate layer B is configured to by the raw material of following weight parts meter：99 parts of homopolypropylene, glyceryl monostearate 3 parts；Top layer C is configured to by the raw material of following weight parts meter：97 parts of ternary polymerized polypropylene, 4 parts of silicone, resist blocking and that masterbatch 12 Part, 6 parts of Ludox, 1.5 parts of nm-class boron nitride.
The gross thickness of the high glaze heat-sealing film is 18 μm, wherein, the thickness of top layer A is 0.4 μm, the thickness of intermediate layer B For 17.2 μm, the thickness of top layer C is 0.4 μm.
The high glaze heat-sealing film for packaging for foodstuff be by dispensing, extrusion, slab, longitudinal stretching, cross directional stretch, Winding is prepared；
The draw ratio scope of the longitudinal stretching process is 8.5；The draw ratio scope of the cross directional stretch process is 12；Institute The extruder temperature stated in extrusion operation is：190℃；Slab machine cooling temperature in the slab process is 16 DEG C；It is described vertical Preheating temperature into stretching process is 95 DEG C, draft temperature is 98 DEG C；Preheating temperature in the cross directional stretch process is 150 DEG C, draft temperature be 155 DEG C, setting temperature be 145 DEG C.
Embodiment 3
A kind of high glaze heat-sealing film for packaging for foodstuff, is made of top layer A, intermediate layer B and top layer C, wherein, top layer A is under The raw material for stating parts by weight meter is configured to：95 parts of ternary polymerized polypropylene, 2 parts of silicone, 4 parts of resist blocking and that masterbatch, 5 parts of Ludox, receive 0.8 part of boron nitride of rice；Intermediate layer B is configured to by the raw material of following weight parts meter：99 parts of homopolypropylene, glyceryl monostearate 3 parts；Top layer C is configured to by the raw material of following weight parts meter：98 parts of ternary polymerized polypropylene, 5 parts of silicone, resist blocking and that masterbatch 13 Part, 7 parts of Ludox, 2 parts of nm-class boron nitride.
The gross thickness of the high glaze heat-sealing film is 20 μm, wherein, the thickness of top layer A is 0.5 μm, the thickness of intermediate layer B For 19.0 μm, the thickness of top layer C is 0.5 μm.
The high glaze heat-sealing film for packaging for foodstuff be by dispensing, extrusion, slab, longitudinal stretching, cross directional stretch, Winding is prepared；
The draw ratio scope of the longitudinal stretching process is 9；The draw ratio scope of the cross directional stretch process is 13；It is described Extruder temperature in extrusion operation is：200℃；Slab machine cooling temperature in the slab process is 20 DEG C；The longitudinal direction Preheating temperature in stretching process is 100 DEG C, draft temperature is 100 DEG C；Preheating temperature in the cross directional stretch process is 180 DEG C, draft temperature be 160 DEG C, setting temperature be 150 DEG C.
Table 1 is the performance test results of heat-sealing film produced by the present invention
Longitudinal tensile strength and transverse tensile strength in table 1 are detected according to examination criteria GB/T13022-1991, oxygen Transmitance is detected according to examination criteria GB/T1038-2000, and glossiness is detected according to GB/8807-88.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with Modification, should all belong to the covering scope of the present invention.

Claims (3)

1. a kind of high glaze heat-sealing film for packaging for foodstuff, is made of top layer A, intermediate layer B and top layer C, it is characterised in that：
Top layer A is configured to by the raw material of following weight parts meter：92-95 parts of ternary polymerized polypropylene, 1-2 parts of silicone, resist blocking and that are female Expect 2-4 parts, 2-5 parts of Ludox, 0.5-0.8 parts of nm-class boron nitride；
Intermediate layer B is configured to by the raw material of following weight parts meter：98-99 parts of homopolypropylene, 2-3 parts of glyceryl monostearate；
Top layer C is configured to by the raw material of following weight parts meter：96-98 parts of ternary polymerized polypropylene, 2-5 parts of silicone, resist blocking and that are female Expect 11-13 parts, 5-7 parts of Ludox, 1-2 parts of nm-class boron nitride.
A kind of 2. high glaze heat-sealing film for packaging for foodstuff according to claim 1, it is characterised in that the bloom The gross thickness of damp heat-sealing film is 15-20 μm, wherein, the thickness of top layer A is 0.3-0.5 μm, and the thickness of intermediate layer B is 14.4- 19.0 μm, the thickness of top layer C is 0.3-0.5 μm.
3. a kind of preparation method of high glaze heat-sealing film for packaging for foodstuff as claimed in claim 1 or 2, its feature exist In being prepared by dispensing, extrusion, slab, longitudinal stretching, cross directional stretch, winding；
The draw ratio scope of the longitudinal stretching process is 8-9；The draw ratio scope of the cross directional stretch process is 11- 13；Extruder temperature in the extrusion operation is：180-200℃；Slab machine cooling temperature in the slab process is 15- 20℃；Preheating temperature in the longitudinal stretching process is 90-100 DEG C, draft temperature is 95-100 DEG C；The cross directional stretch work Preheating temperature in sequence is 130-180 DEG C, draft temperature is 150-160 DEG C, setting temperature is 140-150 DEG C.
CN201711271877.4A 2017-12-06 2017-12-06 A kind of high glaze heat-sealing film for packaging for foodstuff and preparation method thereof Pending CN108032574A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109535544A (en) * 2018-10-08 2019-03-29 福建鸿利印刷材料工贸有限公司 A kind of multi-functional high-intensity packing film and preparation method thereof

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US20030049475A1 (en) * 2001-08-30 2003-03-13 Tien-Kuei Su Polyolefin oil resistant film using porous particles
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