CN108976569A - A kind of EPE pearl wool and preparation method thereof - Google Patents

A kind of EPE pearl wool and preparation method thereof Download PDF

Info

Publication number
CN108976569A
CN108976569A CN201810964837.6A CN201810964837A CN108976569A CN 108976569 A CN108976569 A CN 108976569A CN 201810964837 A CN201810964837 A CN 201810964837A CN 108976569 A CN108976569 A CN 108976569A
Authority
CN
China
Prior art keywords
parts
epe pearl
pearl wool
toughener
foaming agent
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
CN201810964837.6A
Other languages
Chinese (zh)
Inventor
谢勤
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.)
Hefei Jinling Electric Appliance Co Ltd
Original Assignee
Hefei Jinling Electric Appliance 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 Hefei Jinling Electric Appliance Co Ltd filed Critical Hefei Jinling Electric Appliance Co Ltd
Priority to CN201810964837.6A priority Critical patent/CN108976569A/en
Publication of CN108976569A publication Critical patent/CN108976569A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102Azo-compounds
    • C08J9/103Azodicarbonamide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00Foams characterized by the expanding agent
    • C08J2203/04N2 releasing, ex azodicarbonamide or nitroso compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04Homopolymers or copolymers of ethene
    • C08J2423/08Copolymers of ethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2497/00Characterised by the use of lignin-containing materials
    • C08J2497/02Lignocellulosic material, e.g. wood, straw or bagasse
    • 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
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/06Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
    • 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
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • 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
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • 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
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/22Expanded, porous or hollow particles
    • C08K7/24Expanded, porous or hollow particles inorganic
    • C08K7/26Silicon- containing compounds
    • 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
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

The present invention discloses a kind of EPE pearl wool and preparation method thereof; it includes: 300-500 parts of LDPE, 20-100 parts of LLDPE, 100-200 parts of Wheat Straw powder, 50-100 parts of talcum powder, 45-95 parts of precipitated calcium carbonate, 3-5 parts of isopropyl three (dodecyl benzenesulfonyl) metatitanic acid rouge, 60-90 parts of chitin, 50-100 parts of diatomite, 15-45 parts of foaming agent, 10-30 parts of foam stabiliser, 10-30 parts of toughener that it, which prepares raw material by weight; the pearl cotton has good weatherability and corrosion resistance, and good mechanical property, preparation process are simple.

Description

A kind of EPE pearl wool and preparation method thereof
Technical field
The invention belongs to field of packaging material, and in particular to a kind of EPE pearl wool and preparation method thereof.
Background technique
Polyethylene foams (EPE), is commonly called as pearl cotton, is a kind of novel environment friendly packing timber with high-strength buffer capacity Material is important one of padded coaming in modern transportation packaging, have it is light-weight, have flexibility, rub resistance, excellent energy absorption Performance, can the performance characteristics such as burning disposal, and it is frangible, easy to overcome the products such as EPS (prefoaming polystyrene), paper mould It deforms, the disadvantage of recovery difference and vibrationproof ability difference, is widely used in electronic product, instrument, furniture, floor, glass, pottery The inner packing and packaging orientation of the products such as porcelain, craftwork, while being used as the fields such as heat preservation, heat-insulated.
The EPE pearl wool product in China market, the overwhelming majority are by ldpe resin through butane physics at present It foams and is made, chemical property is unstable, and mechanical performance is not good enough, and processing performance is to be improved.
Summary of the invention
It is an object of the present invention to provide a kind of EPE pearl wool and preparation method thereof, the pearl cotton have good weatherability and Corrosion resistance, good mechanical property, preparation process are simple.
The technical scheme is that a kind of EPE pearl wool, preparing raw material by weight includes: LDPE 300-500 Part, 20-100 parts of LLDPE, 100-200 parts of Wheat Straw powder, 50-100 parts of talcum powder, 45-95 parts of precipitated calcium carbonate, isopropyl three 3-5 parts of (dodecyl benzenesulfonyl) metatitanic acid rouge, 60-90 parts of chitin, 50-100 parts of diatomite, 15-45 parts of foaming agent, foam 10-30 parts of stabilizer, 10-30 parts of toughener.
Preferably, preparing raw material by weight includes: 400 parts of LDPE, 60 parts of LLDPE, 150 parts of Wheat Straw powder, cunning 75 parts of mountain flour, 70 parts of precipitated calcium carbonate, 4 parts of isopropyl three (dodecyl benzenesulfonyl) metatitanic acid rouge, 75 parts of chitin, diatomite 70 parts, 30 parts of foaming agent, 20 parts of foam stabiliser, 20 parts of toughener.
Preferably, the partial size of the Wheat Straw powder is 80-160 mesh.
Preferably, the foaming agent is azodicarbonamide, the foam stabiliser is gelatine.
Preferably, the toughener increases to polyethylene glycol.
A method of above-mentioned EPE pearl wool is prepared, is included the following steps:
S1: each raw material is weighed according to parts by weight of raw materials;
S2: talcum powder and precipitated calcium carbonate is dry, after crossing 150 meshes, with isopropyl three (dodecyl benzenesulfonyl) metatitanic acid Together, the speed at 110-120 DEG C with 500-1000rpm is stirred 20-30min to rouge, then addition Wheat Straw powder, then with 5-10min is blended in the speed of 1500-2000rpm, and modified natural fiber is made;
S3: modified natural fiber made from LDPE, LLDPE, S2 being added in 100-120 DEG C of kneading machine and is kneaded 10-15min, Chitin, diatomite, foaming agent, foam stabiliser, toughener are sequentially added, kneading machine temperature is kept, continues to be kneaded 3- Bottom sheet after 5min, is cut into sheet specimens;
S4: sheet specimens prepared by step S2 are in 20 DEG C of -30 DEG C of placement 12-16h, then carry out moulded from foam.
The beneficial effects of the present invention are:
1, present invention introduces modification natural fiber filler play the role of certain support frame in foamed material, to make to make The EPE pearl wool obtained has better mechanical performance.
2, EPE pearl wool good flame resistance produced by the present invention, it is resistant to chemical etching, it is ageing-resistant, it is durable.
3, preparation process of the present invention is simple, at low cost.
Specific embodiment
Embodiment 1
A kind of EPE pearl wool, prepare raw material by weight and include: 300 parts of LDPE, 20 parts of LLDPE, 100 parts of Wheat Straw powder, 50 parts of talcum powder, 45 parts of precipitated calcium carbonate, 3 parts of isopropyl three (dodecyl benzenesulfonyl) metatitanic acid rouge, 60 parts of chitin, diatom Native 50 parts, 15 parts of foaming agent, 10 parts of foam stabiliser, 10 parts of toughener.
Wherein, the partial size of the Wheat Straw powder is 80 mesh, and the foaming agent is azodicarbonamide, the foam stabiliser For gelatine, the toughener increases to polyethylene glycol.
A method of above-mentioned EPE pearl wool is prepared, is included the following steps:
S1: each raw material is weighed according to parts by weight of raw materials;
S2: talcum powder and precipitated calcium carbonate is dry, after crossing 150 meshes, with isopropyl three (dodecyl benzenesulfonyl) metatitanic acid Together, the speed at 110 DEG C with 500rpm is stirred 20min to rouge, Wheat Straw powder is added, then then with the speed of 1500rpm 5min is blended in degree, and modified natural fiber is made;
S3: modified natural fiber made from LDPE, LLDPE, S2 is added in 100 DEG C of kneading machine and is kneaded 10min, then is successively added Enter chitin, diatomite, foaming agent, foam stabiliser, toughener, keep kneading machine temperature, continues bottom sheet after mixing 3min, cut Slabbing sample;
S4: sheet specimens prepared by step S2 are in 20 DEG C of -30 DEG C of placement 12h, then carry out moulded from foam.
Embodiment 2
A kind of EPE pearl wool, prepare raw material by weight and include: 400 parts of LDPE, 60 parts of LLDPE, 150 parts of Wheat Straw powder, 75 parts of talcum powder, 70 parts of precipitated calcium carbonate, 4 parts of isopropyl three (dodecyl benzenesulfonyl) metatitanic acid rouge, 75 parts of chitin, diatom Native 70 parts, 30 parts of foaming agent, 20 parts of foam stabiliser, 20 parts of toughener.
Wherein, the partial size of the Wheat Straw powder is 120 mesh, and the foaming agent is azodicarbonamide, the foam is stablized Agent is gelatine, and the toughener increases to polyethylene glycol.
A method of above-mentioned EPE pearl wool is prepared, is included the following steps:
S1: each raw material is weighed according to parts by weight of raw materials;
S2: talcum powder and precipitated calcium carbonate is dry, after crossing 150 meshes, with isopropyl three (dodecyl benzenesulfonyl) metatitanic acid Together, the speed at 115 DEG C with 750rpm is stirred 25min to rouge, Wheat Straw powder is added, then then with the speed of 1750rpm 7min is blended in degree, and modified natural fiber is made;
S3: modified natural fiber made from LDPE, LLDPE, S2 is added in 110 DEG C of kneading machine and is kneaded 13min, then is successively added Enter chitin, diatomite, foaming agent, foam stabiliser, toughener, keep kneading machine temperature, continues bottom sheet after mixing 4min, cut Slabbing sample;
S4: sheet specimens prepared by step S2 are in 20 DEG C of -30 DEG C of placement 14h, then carry out moulded from foam.
Embodiment 3
A kind of EPE pearl wool, preparing raw material by weight includes: 500 parts of LDPE, 100 parts of LLDPE, Wheat Straw powder 200 Part, 100 parts of talcum powder, 95 parts of precipitated calcium carbonate, 5 parts of isopropyl three (dodecyl benzenesulfonyl) metatitanic acid rouge, 90 parts of chitin, 100 parts of diatomite, 45 parts of foaming agent, 30 parts of foam stabiliser, 30 parts of toughener.
Wherein, the partial size of the Wheat Straw powder is 160 mesh, and the foaming agent is azodicarbonamide, the foam is stablized Agent is gelatine, and the toughener increases to polyethylene glycol.
A method of above-mentioned EPE pearl wool is prepared, is included the following steps:
S1: each raw material is weighed according to parts by weight of raw materials;
S2: talcum powder and precipitated calcium carbonate is dry, after crossing 150 meshes, with isopropyl three (dodecyl benzenesulfonyl) metatitanic acid Together, the speed at 120 DEG C with 1000rpm is stirred 30min to rouge, Wheat Straw powder is added, then then with the speed of 2000rpm 10min is blended in degree, and modified natural fiber is made;
S3: modified natural fiber made from LDPE, LLDPE, S2 is added in 120 DEG C of kneading machine and is kneaded 15min, then is successively added Enter chitin, diatomite, foaming agent, foam stabiliser, toughener, keep kneading machine temperature, continues bottom sheet after mixing 5min, cut Slabbing sample;
S4: sheet specimens prepared by step S2 are in 20 DEG C of -30 DEG C of placement 16h, then carry out moulded from foam.
The main physical index of EPE pearl wool made from embodiment 1-3 is tested, testing result is as shown in table 1: The main physical index of EPE pearl wool made from 1 embodiment 1-3 of table

Claims (6)

1. a kind of EPE pearl wool, which is characterized in that it includes: 300-500 parts of LDPE, LLDPE that it, which prepares raw material by weight, 20-100 parts, 100-200 parts of Wheat Straw powder, 50-100 parts of talcum powder, 45-95 parts of precipitated calcium carbonate, three (dodecane of isopropyl Base benzenesulfonyl) 3-5 parts of metatitanic acid rouge, 60-90 parts of chitin, 50-100 parts of diatomite, 15-45 parts of foaming agent, foam stabiliser 10-30 parts, 10-30 parts of toughener.
2. EPE pearl wool according to claim 1, which is characterized in that it includes: LDPE 400 that it, which prepares raw material by weight, Part, 60 parts of LLDPE, 150 parts of Wheat Straw powder, 75 parts of talcum powder, 70 parts of precipitated calcium carbonate, (the detergent alkylate sulphur of isopropyl three Acyl group) 4 parts of metatitanic acid rouge, 75 parts of chitin, 70 parts of diatomite, 30 parts of foaming agent, 20 parts of foam stabiliser, 20 parts of toughener.
3. EPE pearl wool according to claim 2, which is characterized in that the partial size of the Wheat Straw powder is 80-160 mesh.
4. EPE pearl wool according to claim 3, which is characterized in that the foaming agent is azodicarbonamide, the bubble Foam stabilizers are gelatine.
5. EPE pearl wool according to claim 4, which is characterized in that the toughener increases to polyethylene glycol.
6. a kind of method for preparing the described in any item EPE pearl wools of claim 1-5, which comprises the steps of:
S1: each raw material is weighed according to parts by weight of raw materials;
S2: talcum powder and precipitated calcium carbonate is dry, after crossing 150 meshes, with isopropyl three (dodecyl benzenesulfonyl) metatitanic acid Together, the speed at 110-120 DEG C with 500-1000rpm is stirred 20-30min to rouge, then addition Wheat Straw powder, then with 5-10min is blended in the speed of 1500-2000rpm, and modified natural fiber is made;
S3: modified natural fiber made from LDPE, LLDPE, S2 being added in 100-120 DEG C of kneading machine and is kneaded 10-15min, Chitin, diatomite, foaming agent, foam stabiliser, toughener are sequentially added, kneading machine temperature is kept, continues to be kneaded 3- Bottom sheet after 5min, is cut into sheet specimens;
S4: sheet specimens prepared by step S2 are in 20 DEG C of -30 DEG C of placement 12-16h, then carry out moulded from foam.
CN201810964837.6A 2018-08-23 2018-08-23 A kind of EPE pearl wool and preparation method thereof Pending CN108976569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810964837.6A CN108976569A (en) 2018-08-23 2018-08-23 A kind of EPE pearl wool and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810964837.6A CN108976569A (en) 2018-08-23 2018-08-23 A kind of EPE pearl wool and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108976569A true CN108976569A (en) 2018-12-11

Family

ID=64547188

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810964837.6A Pending CN108976569A (en) 2018-08-23 2018-08-23 A kind of EPE pearl wool and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108976569A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110790998A (en) * 2019-09-24 2020-02-14 惠州市志海新威科技有限公司 Ultra-light polyethylene foaming agent and preparation method and application thereof
CN113024918A (en) * 2019-12-24 2021-06-25 华东理工大学 EPE pearl wool material and preparation method and application thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778247A (en) * 2016-05-30 2016-07-20 深圳市康尼塑胶有限公司 Polyethylene foam material prepared from natural fibers and preparation method thereof
CN107880348A (en) * 2017-10-19 2018-04-06 合肥朗胜新材料有限公司 A kind of modified peanut powder/EPE composites and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778247A (en) * 2016-05-30 2016-07-20 深圳市康尼塑胶有限公司 Polyethylene foam material prepared from natural fibers and preparation method thereof
CN107880348A (en) * 2017-10-19 2018-04-06 合肥朗胜新材料有限公司 A kind of modified peanut powder/EPE composites and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110790998A (en) * 2019-09-24 2020-02-14 惠州市志海新威科技有限公司 Ultra-light polyethylene foaming agent and preparation method and application thereof
CN113024918A (en) * 2019-12-24 2021-06-25 华东理工大学 EPE pearl wool material and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN108976569A (en) A kind of EPE pearl wool and preparation method thereof
CN103819645B (en) A kind of slow rebound polyurethane foam material and preparation method thereof
BR112016006949B1 (en) PROCESS FOR THE PRODUCTION OF EXPANDED FOAM PARTICLES MADE FROM A GRAIN, EXPANDED FOAM PARTICLE, PROCESS FOR THE PRODUCTION OF A MOLDING PART, MOLDING PART AND USE OF THE MOLDING PART
CN105292702B (en) A kind of precision instruments are packed for the preparation method of pearl cotton bag
CN102286165A (en) Expandable polyethylene (EPE) pearl wool
Neto et al. Biodegradable thermoplastic starch of peach palm (Bactris gasipaes kunth) fruit: Production and characterisation
CN105461967B (en) A kind of lightweight starch base high tenacity composite foam material
CN107793618A (en) A kind of polyethylene foamed material and preparation method thereof
JPH10503536A (en) Foamable plant fiber composition and foamed material and foamed product thereof
CN106832518A (en) A kind of environmental protection and the pearl cotton of stable performance and preparation method thereof
Glenn et al. Starch-based foam composite materials: Processing and bioproducts
CN105218777A (en) Urethane packaging sponge and preparation method thereof
CN101928421B (en) Anti-shrinkage master batch for expanded aple poly ethylene (EPE) film, EPE film and process for manufacturing EPE film
NZ607544A (en) Granulated food product
CN109679307A (en) A kind of biodegradable pearl cotton and preparation method thereof
CN108003453A (en) One kind sizing expanded material, sizing foam process and purposes
CN103819919A (en) Preparation method of degradable foam packing material
US11124619B2 (en) Method for preparing block polyether amide foam particles with sandbag structure
CN106280059B (en) A kind of plant fiber foamed wall heat insulation material and preparation method thereof
JP2005264166A (en) Foamed particle and molded product
CN104109401B (en) A kind of preparation method of Chinese medicine residue foamed damping packing material
CN105086066A (en) Moisture absorbing and mold proofing film for packaging fine dried noodles
CN103980597B (en) A kind of polyethylene foams and preparation method thereof
CN103113612A (en) Polypropylene foaming process
JP3737396B2 (en) Expanded particles and molded bodies

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
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20181211

WD01 Invention patent application deemed withdrawn after publication