CN107163366A - A kind of preparation method of heat-resisting EVA packaging materials - Google Patents

A kind of preparation method of heat-resisting EVA packaging materials Download PDF

Info

Publication number
CN107163366A
CN107163366A CN201710471421.6A CN201710471421A CN107163366A CN 107163366 A CN107163366 A CN 107163366A CN 201710471421 A CN201710471421 A CN 201710471421A CN 107163366 A CN107163366 A CN 107163366A
Authority
CN
China
Prior art keywords
parts
eva
preparation
packaging materials
interval
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710471421.6A
Other languages
Chinese (zh)
Inventor
顾建芳
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.)
Suzhou Austrian Packaging Technology Co Ltd
Original Assignee
Suzhou Austrian Packaging Technology 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 Suzhou Austrian Packaging Technology Co Ltd filed Critical Suzhou Austrian Packaging Technology Co Ltd
Priority to CN201710471421.6A priority Critical patent/CN107163366A/en
Publication of CN107163366A publication Critical patent/CN107163366A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0846Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853Vinylacetate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)

Abstract

The invention discloses a kind of preparation method of heat-resisting EVA packaging materials, EVA, polyvinylidene fluoride, nano silicon, acetoacetic acid allyl ester and disulfide group 2-ethyl hexyl ethanoate stannous methide are added into pelletizing after melting extrusion in double screw extruder, cooling to split, obtain pellet, it is added in 50 60 DEG C of homogenizers and mixes 10 minutes with remaining raw material again, then 150 170 DEG C of fusion plastifications, 200 220 DEG C of mouth mold shapings, inflation, corona, windings are sequentially passed through on film blowing device, you can.The present invention causes the present invention to prepare EVA packaging materials and have good heat resistance by nano-material modified, and original mechanical property is not reduced, good combination property, and preparation method is simple, with good application value.

Description

A kind of preparation method of heat-resisting EVA packaging materials
Technical field
The invention belongs to polymeric material field, it is related to a kind of preparation method of heat-resisting EVA packaging materials.
Technical background
Plastic flexible packaging material, is generally referred to by plastics(Or plastic composite)Composition, soft texture, Ke Yitong Cross the material that the modes such as bag, parcel are packed to commodity.In Soft Roll charging using it is most be various plastic sheetings and its Membranaceous composite, fabric based packaging material etc..The extensive use of flexible packing material is the enterprises and institutions' list for being engaged in flexible package industry Position provides extremely wide activity space, is also achieved higher than other plastics while excellent service is provided for users The good benefit of processing and forming industry.Developed rapidly, prospect is very bright.Because the kind of flexible packing material is numerous Many, performance span is very big, from performance it is similar, close to entirely different product have industrialized production.Flexible packing material is Membranoid substance, thickness is fairly small, normally only 0.04um or so, every square metre quality only 0.025kg or so, therefore uses flexible package Material commodity can significantly economize on resources consuming compared with other packaging materials.Not only consumption of raw material is small for plastic flexible packaging material, And there is the comprehensive advantages such as easy to process, energy charge is low, shaping efficiency is high, thus have the advantages that cheap.Due to Flexible packing material have the advantages that it is numerous, wherein the particularly pertinent reasonable combination that can be by various materials designs and manufactures Desired, more satisfactory specific packaging material, thus with splendid cost performance, show the powerful market competitiveness The extensive concern of people and the favor of user have been obtained, have developed rapidly, its application covers food, medicine, light industry, weaving, day With all spectra of the almost industrial and agricultural production such as small item, it has also become one of most important kind in plastic package material.
Different plastics can be not only used in flexible package plastics, using different formulations, pass through different process manufacturing property Different various single thin films, but also can obtain hundreds of different by the various combination between multiple material Kind, meets a variety of needs.The characteristics of using different flexible packing material different properties, can by the reasonable selection of kind The demand of numerous commodity packagings can be met.Eva film is also known as environment-friendlythin thin film, is produced by EVA raw materials by being cast extrusion Film, is a kind of new generation of green environment-friendly degradable material, and with biodegradable, environment will not be caused during discarded or burning Injury, light specific gravity density is tasteless 0.93 or so, and without heavy metal, without phthalate, high transparency is soft and tough and tensile, It is superpower low temperature resistant(- 70 degree), water resistant, salt and other materials, the characteristic such as high hot paste.But to there is heat resistance poor for eva film Shortcoming.Therefore, we set about from the formula and technique of product, new high performance material is developed, a kind of heat-resisting EVA packagings are researched and developed The new technology of material is the task of top priority of whole industry.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of preparation method of heat-resisting EVA packaging materials.
The purpose of the present invention is achieved through the following technical solutions:A kind of preparation method of heat-resisting EVA packaging materials, Comprise the following steps:66-75 parts of EVA, 8-12 parts of polyvinylidene fluoride are first weighed by weight, 15-22 parts of coumarone indene resin, do not had 5-15 parts of propyl galate, 7-9 parts of nano imvite, 8-20 parts of cellulose diacetate, three (2,4- di-tert-butyl-phenyls) phosphorous 5-8 parts of acid esters, 3-5 parts of carbonyl diamide, 5-9 parts of nano silicon, 4-8 parts of acetoacetic acid allyl ester, disulfide group acetic acid are different pungent 12-14 parts of 5-10 parts of ester stannous methide, 3-5 parts of ammonium hydrogen carbonate and bentonite;By EVA, polyvinylidene fluoride, nanometer titanium dioxide Silicon, acetoacetic acid allyl ester and disulfide group 2-ethyl hexyl ethanoate stannous methide add melting extrusion in double screw extruder, after cooling Pelletizing is split, and obtains pellet, wherein, the condition of twin (double) screw extruder is that screw speed is that 20-100 turns/min, and draw ratio is 30- 50:1, extruding silicon carbide is:First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 ℃;It is added in 50-60 DEG C of homogenizer and mixes 10 minutes with remaining raw material again, is then sequentially passed through on film blowing device 150-170 DEG C of fusion plastification, 200-220 DEG C of mouth mold shaping, inflation, corona, winding, you can.
EVA70 parts are weighed by weight, 10 parts of polyvinylidene fluoride, 18 parts of coumarone indene resin, 10 parts of propylgallate, received 8 parts of montmorillonite of rice, 14 parts of cellulose diacetate, three 7 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, 4 parts of carbonyl diamide, receive 7 parts of silica of rice, 6 parts of acetoacetic acid allyl ester, 7 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 4 parts of ammonium hydrogen carbonate and swollen 13 parts of profit soil.
Weigh by weight 75 parts of EVA, 12 parts of polyvinylidene fluoride, 22 parts of coumarone indene resin, 15 parts of propylgallate, 9 parts of nano imvite, 20 parts of cellulose diacetate, three 8 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, 5 parts of carbonyl diamide, 9 parts of nano silicon, 8 parts of acetoacetic acid allyl ester, 10 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 5 parts of ammonium hydrogen carbonate and 14 parts of bentonite.
66 parts of EVA, 8 parts of polyvinylidene fluoride are weighed by weight, 15 parts of coumarone indene resin, 5 parts of propylgallate, received 7 parts of montmorillonite of rice, 8 parts of cellulose diacetate, three 5 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, carbonyl diamide 3 part, nanometer 5 parts of silica, 4 parts of acetoacetic acid allyl ester, 5 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 3 parts of ammonium hydrogen carbonate and swelling 12 parts of soil.
The condition of the twin (double) screw extruder is that screw speed is 60 turns/min, and draw ratio is 35:1, extrude silicon carbide For:First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 DEG C.
The invention has the advantages that:The present invention is by nano-material modified so that preparation EVA packing timbers of the invention Material has good heat resistance, and original mechanical property is not reduced, good combination property, and preparation method is simple, has Good application value.
Embodiment
Embodiment 1
A kind of preparation method of heat-resisting EVA packaging materials, comprises the following steps:75 parts of EVA is first weighed by weight, gather inclined difluoro 12 parts of ethene, 22 parts of coumarone indene resin, 15 parts of propylgallate, 9 parts of nano imvite, 20 parts of cellulose diacetate, three (2, 4- di-tert-butyl-phenyls) 8 parts of phosphite ester, 5 parts of carbonyl diamide, 9 parts of nano silicon, 8 parts of acetoacetic acid allyl ester, two 14 parts of 10 parts of isooctylthioglycolate stannous methide, 5 parts of ammonium hydrogen carbonate and bentonite;By EVA, polyvinylidene fluoride, nanometer two Silica, acetoacetic acid allyl ester and disulfide group 2-ethyl hexyl ethanoate stannous methide add melting extrusion in double screw extruder, cold But pelletizing is split after, obtains pellet, wherein, the condition of twin (double) screw extruder is that screw speed is 100 turns/min, and draw ratio is 50:1, extruding silicon carbide is:First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 ℃;It is added in 60 DEG C of homogenizers and mixes 10 minutes with remaining raw material again, 170 is then sequentially passed through on film blowing device DEG C fusion plastification, 220 DEG C of mouth mold shapings, inflation, corona, windings, you can.
Embodiment 2
A kind of preparation method of heat-resisting EVA packaging materials, comprises the following steps:66 parts of EVA is first weighed by weight, gather inclined difluoro 8 parts of ethene, 15 parts of coumarone indene resin, 5 parts of propylgallate, 7 parts of nano imvite, 8 parts of cellulose diacetate, three (2,4- Di-tert-butyl-phenyl) 5 parts of phosphite ester, 3 parts of carbonyl diamide, 5 parts of nano silicon, 4 parts of acetoacetic acid allyl ester, two sulphur 12 parts of 5 parts of the different monooctyl ester stannous methide of guanidine-acetic acid, 3 parts of ammonium hydrogen carbonate and bentonite;By EVA, polyvinylidene fluoride, nano-silica SiClx, acetoacetic acid allyl ester and disulfide group 2-ethyl hexyl ethanoate stannous methide add melting extrusion in double screw extruder, cooling Pelletizing is split afterwards, obtains pellet, wherein, the condition of twin (double) screw extruder is that screw speed is 20 turns/min, and draw ratio is 30:1, Extruding silicon carbide is:First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 DEG C;Again It is added in 50 DEG C of homogenizers and mixes 10 minutes with remaining raw material, 150 DEG C is then sequentially passed through on film blowing device and is melted Melt plasticizing, 200 DEG C of mouth mold shapings, inflation, corona, windings, you can.
Embodiment 3
A kind of preparation method of heat-resisting EVA packaging materials, comprises the following steps:EVA70 parts are first weighed by weight, gather inclined difluoro second 10 parts of alkene, 18 parts of coumarone indene resin, 10 parts of propylgallate, 8 parts of nano imvite, 14 parts of cellulose diacetate, three (2,4- Di-tert-butyl-phenyl) 7 parts of phosphite ester, 4 parts of carbonyl diamide, 7 parts of nano silicon, 6 parts of acetoacetic acid allyl ester, two sulphur 13 parts of 7 parts of the different monooctyl ester stannous methide of guanidine-acetic acid, 4 parts of ammonium hydrogen carbonate and bentonite;By EVA, polyvinylidene fluoride, nano-silica SiClx, acetoacetic acid allyl ester and disulfide group 2-ethyl hexyl ethanoate stannous methide add melting extrusion in double screw extruder, cooling Pelletizing is split afterwards, obtains pellet, wherein, the condition of twin (double) screw extruder is that screw speed is 60 turns/min, and draw ratio is 35:1, Extruding silicon carbide is:First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 DEG C;Again It is added in 55 DEG C of homogenizers and mixes 10 minutes with remaining raw material, 160 DEG C is then sequentially passed through on film blowing device and is melted Melt plasticizing, 210 DEG C of mouth mold shapings, inflation, corona, windings, you can.

Claims (5)

1. a kind of preparation method of heat-resisting EVA packaging materials, it is characterised in that the described method comprises the following steps:First claim by weight 66-75 parts of EVA, 8-12 parts of polyvinylidene fluoride, 15-22 parts of coumarone indene resin, 5-15 parts of propylgallate, nanometer is taken to cover De- 7-9 parts of soil, 8-20 parts of cellulose diacetate, three 5-8 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, carbonyl diamide 3-5 Part, 5-9 parts of nano silicon, 4-8 parts of acetoacetic acid allyl ester, 5-10 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, carbonic acid 12-14 parts of 3-5 parts of hydrogen ammonium and bentonite;By EVA, polyvinylidene fluoride, nano silicon, acetoacetic acid allyl ester and two Isooctylthioglycolate stannous methide adds melting extrusion in double screw extruder, pelletizing fractionation after cooling, obtains pellet, its In, the condition of twin (double) screw extruder is that screw speed is that 20-100 turns/min, and draw ratio is 30-50:1, extruding silicon carbide is: First interval is 160-180 DEG C, and second interval is 185-195 DEG C, and 3rd interval is 210-225 DEG C;Add again with remaining raw material Enter into 50-60 DEG C of homogenizer mixing 10 minutes, then sequentially passed through on film blowing device 150-170 DEG C of fusion plastification, 200-220 DEG C of mouth mold shaping, inflation, corona, winding, you can.
2. a kind of preparation method of heat-resisting EVA packaging materials according to claim 1, it is characterised in that:Weigh by weight EVA70 parts, 10 parts of polyvinylidene fluoride, 18 parts of coumarone indene resin, 10 parts of propylgallate, 8 parts of nano imvite, two acetic acid 14 parts of cellulose, three 7 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, 4 parts of carbonyl diamide, 7 parts of nano silicon, acetyl 13 parts of 6 parts of allyl acetate, 7 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 4 parts of ammonium hydrogen carbonate and bentonite.
3. a kind of preparation method of heat-resisting EVA packaging materials according to claim 1, it is characterised in that:Weigh by weight 75 parts of EVA, 12 parts of polyvinylidene fluoride, 22 parts of coumarone indene resin, 15 parts of propylgallate, 9 parts of nano imvite, two vinegar 20 parts of acid cellulose, three 8 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, 5 parts of carbonyl diamide, 9 parts of nano silicon, second 14 parts of 8 parts of ethyl acetoacetic acid allyl ester, 10 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 5 parts of ammonium hydrogen carbonate and bentonite.
4. a kind of preparation method of heat-resisting EVA packaging materials according to claim 1, it is characterised in that:Weigh by weight 66 parts of EVA, 8 parts of polyvinylidene fluoride, 15 parts of coumarone indene resin, 5 parts of propylgallate, 7 parts of nano imvite, two acetic acid 8 parts of cellulose, three 5 parts of (2,4- di-tert-butyl-phenyls) phosphite esters, 3 parts of carbonyl diamide, 5 parts of nano silicon, acetyl second 12 parts of 4 parts of allyl propionate, 5 parts of disulfide group 2-ethyl hexyl ethanoate stannous methide, 3 parts of ammonium hydrogen carbonate and bentonite.
5. a kind of preparation method of heat-resisting EVA packaging materials according to claim 1, it is characterised in that:The twin-screw The condition of extruder is that screw speed is 60 turns/min, and draw ratio is 35:1, extruding silicon carbide is:First interval is 160- 180 DEG C, second interval is 185-195 DEG C, and 3rd interval is 210-225 DEG C.
CN201710471421.6A 2017-06-20 2017-06-20 A kind of preparation method of heat-resisting EVA packaging materials Pending CN107163366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710471421.6A CN107163366A (en) 2017-06-20 2017-06-20 A kind of preparation method of heat-resisting EVA packaging materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710471421.6A CN107163366A (en) 2017-06-20 2017-06-20 A kind of preparation method of heat-resisting EVA packaging materials

Publications (1)

Publication Number Publication Date
CN107163366A true CN107163366A (en) 2017-09-15

Family

ID=59820039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710471421.6A Pending CN107163366A (en) 2017-06-20 2017-06-20 A kind of preparation method of heat-resisting EVA packaging materials

Country Status (1)

Country Link
CN (1) CN107163366A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111113871A (en) * 2020-01-13 2020-05-08 中山市华泽包装有限公司 Preparation method of EVA vacuum adhesive film with corona treatment process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102558656A (en) * 2010-12-21 2012-07-11 天津德昊超微新材料有限公司 Special flame retardant EVA material
CN103601958A (en) * 2013-10-16 2014-02-26 鲁奎 Polyethylene agricultural film containing bagasse
CN103819783A (en) * 2012-11-16 2014-05-28 无锡市黄盛包装制品有限公司 Preparation method of freshness-keeping package material capable of strongly replacing gas
CN105906905A (en) * 2016-04-29 2016-08-31 安徽巢湖南方膜业有限责任公司 Chewing gum packaging paper inner film
CN106397961A (en) * 2016-09-07 2017-02-15 福建惠亿美环保材料科技有限公司 Antibacterial super transparent EVA film and preparing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102558656A (en) * 2010-12-21 2012-07-11 天津德昊超微新材料有限公司 Special flame retardant EVA material
CN103819783A (en) * 2012-11-16 2014-05-28 无锡市黄盛包装制品有限公司 Preparation method of freshness-keeping package material capable of strongly replacing gas
CN103601958A (en) * 2013-10-16 2014-02-26 鲁奎 Polyethylene agricultural film containing bagasse
CN105906905A (en) * 2016-04-29 2016-08-31 安徽巢湖南方膜业有限责任公司 Chewing gum packaging paper inner film
CN106397961A (en) * 2016-09-07 2017-02-15 福建惠亿美环保材料科技有限公司 Antibacterial super transparent EVA film and preparing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111113871A (en) * 2020-01-13 2020-05-08 中山市华泽包装有限公司 Preparation method of EVA vacuum adhesive film with corona treatment process

Similar Documents

Publication Publication Date Title
CN102416744B (en) A kind of food package plastic base material film and production technology thereof
CN102416746B (en) A kind of plastic substrate film of packaging for foodstuff and processing technology thereof
CN102380996B (en) A kind of food package plastic base material film and production technology thereof
CN102501513B (en) Puncture-resistant heavy packaging composite film and preparation thereof
CN105153659B (en) Heat-resistance polylactic acid composite material and preparation method thereof
CN102993653B (en) Biodegradable heat-shrinkable material, biodegradable heat-shrinkable film and preparation method of biodegradable heat-shrinkable film
CN102964666B (en) Capacitor film containing modified bentonite and preparation method thereof
CN102380997A (en) Plastic substrate film for food packing and machining process thereof
CN105667031B (en) PHA/PLA/PHA coextruded films and its extruding-out process
CN102423942B (en) A kind of food package plastic base material film and production technology thereof
WO2020087944A1 (en) Preparation method for biodegradable self-sealing strip
CN107189413A (en) A kind of preparation method of High-barrier nylon film
CN107200962A (en) A kind of preparation method of degradable PVC packaging films
CN102416745A (en) Plastic base material film for food packaging and processing technology thereof
CN107163366A (en) A kind of preparation method of heat-resisting EVA packaging materials
CN108515761A (en) Film and preparation method thereof is compiled in a kind of BOPP delustrings modeling
CN103738015B (en) A kind of transverse-thermal-sbidirectional bidirectional stretching polyester thin film and preparation method thereof
CN103009761A (en) Polyolefin heat-shrinkable film with high shrinking percentage and manufacturing method thereof
CN101607459B (en) BOPET film capable of being directly heat-sealed
CN107022130A (en) A kind of degradable straw plastic film and preparation method thereof
CN107163345A (en) A kind of preparation method of heat-resisting ldpe film
CN103265731B (en) Degradable thermoplastic starch material and preparation method thereof
CN102416748A (en) Plastic substrate film for food packaging and processing technology thereof
CN107200948A (en) A kind of preparation method of antibacterial food PS packaging films
CN105968803A (en) High-flowability easy-to-process nylon 66 wood-plastic composite and preparation method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170915