CN109483927A - A kind of moisture-proof phone housing manufacture craft - Google Patents

A kind of moisture-proof phone housing manufacture craft Download PDF

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Publication number
CN109483927A
CN109483927A CN201811412109.0A CN201811412109A CN109483927A CN 109483927 A CN109483927 A CN 109483927A CN 201811412109 A CN201811412109 A CN 201811412109A CN 109483927 A CN109483927 A CN 109483927A
Authority
CN
China
Prior art keywords
grams
manufacture craft
moisture
proof
vinyl chloride
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
CN201811412109.0A
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Chinese (zh)
Inventor
陈建国
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.)
Dongguan Zhengpin Hardware Electronic Co Ltd
Original Assignee
Dongguan Zhengpin Hardware Electronic 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 Dongguan Zhengpin Hardware Electronic Co Ltd filed Critical Dongguan Zhengpin Hardware Electronic Co Ltd
Priority to CN201811412109.0A priority Critical patent/CN109483927A/en
Publication of CN109483927A publication Critical patent/CN109483927A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/006—Producing casings, e.g. accumulator cases
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-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
    • C08J9/08—Working-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 carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-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
    • C08J9/10—Working-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
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-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
    • C08J9/10—Working-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
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-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
    • C08J9/10—Working-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
    • C08J9/107—Nitroso compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/34—Ignifugeants
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay

Abstract

The invention discloses a kind of moisture-proof phone housing manufacture craft, formula includes olefin polymer, vinyl chloride tree and fireproofed paper, and the olefin polymer is the first covering surface, and second covering surface is vinyl chloride resin, and the third level is fireproofed paper；Its manufacture craft is the following steps are included: using common painting dyeing method, using brush brushing, roll-type applies dye device and paints, then the heat drying in 150 DEG C of heating furnaces, and foaming agent is added in the composition, it is coated on first coating with one vinyl chloride copolymer solvent of surface treating agent acrylate, then the vinyl chloride resin constituent for screen printer or print intaglio press the print coating liquid that can print predetermined pattern is utilized, and it is heated in 200 DEG C of heating furnace, foaming, pattern layer weight per cm is 40-100 grams, and antimony trichloride is added in papermaking, using being pasted on mobile phone for scraps of paper material, can effectively provide fire prevention and it is moisture-proof, and the material production of the scraps of paper can reduce the weight of mobile phone, and it can be convenient for changing at any time, better visual effect can be provided.

Description

A kind of moisture-proof phone housing manufacture craft
Technical field
A kind of fire-proof and damp-proof manufacture craft especially designs a kind of moisture-proof phone housing manufacture craft.
Background technique
Common mobile phone shell can make mobile phone appearance more and more beautiful, and more and more mobile phone shells are with various Function, but the heat dissipation of existing mobile phone shell is difficult, and is easy to produce mobile phone overheat, causes dangerous and excessively moist in region Place, dampness and infiltration, keep its service life too short, do not give mobile phone maximum meating and use.
Summary of the invention
The purpose of the present invention is to provide a kind of moisture-proof phone housing manufacture crafts, and overall structure is simple, at low cost, application Range is wide, practical.
In order to achieve the above object, the invention provides the following technical scheme:
A kind of moisture-proof phone housing manufacture craft, formula include olefin polymer, vinyl chloride tree and fireproofed paper, feature Be: the olefin polymer is the first covering surface, and second covering surface is vinyl chloride resin, the third level For fireproofed paper；Its manufacture craft the following steps are included:
S1: using common painting dyeing method, and using brush brushing, roll-type applies dye device and paints, and then heats at 150 DEG C Heat drying in furnace, and foaming agent is added in the composition, form alkene froth bed；
One vinyl chloride copolymer solvent of surface treating agent acrylate is coated on S2: the first covering surface, then utilization can print The vinyl chloride resin constituent of screen printer or print intaglio press the print coating liquid of predetermined pattern processed, and at 200 DEG C It heats, foams in heating furnace, pattern layer weight per cm is 40-100 grams, and adds antimony trichloride in papermaking.
Preferably, the material composition of the olefin polymer are as follows: 20 grams of vinyl monomer polymerization object, sticks 30 grams of calcium carbonate Native 40 grams, 10 grams of titanium oxide, and 20 grams of foaming agent are added with, which is azo
Two 10 grams of ureas, 10 grams of ten pentamethylene of dinitro, four ammonium, 10 grams and 20 grams of sodium bicarbonate of two benzene sulfonyl hydrazide of P-P oxygen.
Preferably, Corvic addition dioctyl phthalate and two urea of azo, fire resisting plasticizer, nothing Machine additive, stabilizer, fireproof agent.
Preferably, the fire resisting plasticizer is silicon carbide.
Preferably, the stabilizer is carboxylic esterification polyvinyl alcohol.
Preferably, the fireproofed paper composition is paper pulp and antimony trichloride.
Present invention employs composite materials to be made, and using being pasted on mobile phone for scraps of paper material, can effectively provide It prevents fires and moisture-proof, and the material production of the scraps of paper can reduce the weight of mobile phone, and can be convenient for changing at any time, can mention For better visual effect.
Specific embodiment
Embodiments of the present invention will be described for preferred embodiment below.
A kind of moisture-proof phone housing manufacture craft, formula includes olefin polymer, vinyl chloride tree and fireproofed paper, described Olefin polymer is the first covering surface, and ingredient is as follows: every square metre of weight is 80 to 270 grams, and second covering surface is Vinyl chloride resin, the third level be fireproofed paper, manufacture craft the following steps are included:
S1: using common painting dyeing method, and using brush brushing, roll-type applies dye device and paints, and then heats at 150 DEG C Heat drying in furnace, and foaming agent is added in the composition, form alkene froth bed；
One vinyl chloride copolymer solvent of surface treating agent acrylate is coated on S2: the first covering surface, then utilization can print The vinyl chloride resin constituent of screen printer or print intaglio press the print coating liquid of predetermined pattern processed, and at 200 DEG C It heats, foams in heating furnace, pattern layer weight per cm is 40-100 grams, and adds antimony trichloride in papermaking.
The material of the olefin polymer forms are as follows: 20 grams of vinyl monomer polymerization object, 30 grams of calcium carbonate, 40 grams of clay, 10 grams of titanium oxide and the above are additives, and 20 grams of foaming agent are added with, which is 10 grams of two urea of azo, dinitro 10 grams of ten pentamethylene of base, four ammonium, 10 grams and 20 grams of sodium bicarbonate of two benzene sulfonyl hydrazide of P-P oxygen.
Two urea of azo of 50 grams of dioctyl phthalates with 3-15 grams is added in every 100 grams of Corvic, and is added Add 10 grams of fire resisting plasticizer, 15 grams of inorganic additive, 10 grams of stabilizer, 5 grams of fireproof agent.
The fireproofed paper composition is paper pulp 70% and antimony trichloride 30%.
Its manufacture craft the following steps are included:
Using common painting dyeing method, using brush brushing, roll-type applies dye device and paints, then in 150 DEG C of heating furnaces Middle heat drying, and foaming agent is added in the composition, form alkene froth bed.It coats on first coating with surface treating agent Then one vinyl chloride copolymer solvent of acrylate utilizes the screen printer or print intaglio press that can print predetermined pattern The vinyl chloride resin constituent of coating liquid is printed, and is heated in 200 DEG C of heating furnace, is foamed, pattern layer weight per cm is 40-100 grams.
Fireproofed paper utilizes medium paper pulp, and the fire prevention such as antimony trichloride is added in papermaking.
Present invention employs composite materials to be made, and using being pasted on mobile phone for scraps of paper material, can effectively provide It prevents fires and moisture-proof, and the material production of the scraps of paper can reduce the weight of mobile phone, and can be convenient for changing at any time, can mention For better visual effect.
It, for the ordinary skill in the art, can be with although having shown and having described the embodiment of the present invention A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And deformation, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of moisture-proof phone housing manufacture craft, formula includes that olefin polymer, vinyl chloride tree and fireproofed paper, feature exist In: the olefin polymer is the first covering surface, and second covering surface is vinyl chloride resin, and the third level is Fireproofed paper；Its manufacture craft the following steps are included:
S1: using common painting dyeing method, and using brush brushing, roll-type applies dye device and paints, then in 150 DEG C of heating furnaces Heat drying, and foaming agent is added in the composition, form alkene froth bed；
One vinyl chloride copolymer solvent of surface treating agent acrylate is coated on S2: the first covering surface, then utilization can print rule Determine the screen printer of pattern or the vinyl chloride resin constituent of print intaglio press print coating liquid, and in 200 DEG C of heating It heats, foams in furnace, pattern layer weight per cm is 40-100 grams, and adds antimony trichloride in papermaking.
2. a kind of moisture-proof phone housing manufacture craft according to claim 1, it is characterised in that: the olefin polymer Material composition are as follows: 20 grams of vinyl monomer polymerization object, 30 grams of calcium carbonate, 40 grams of clay, 10 grams of titanium oxide, and be added with foaming agent 20 grams, which is 10 grams of two urea of azo, 10 grams of ten pentamethylene of dinitro, four ammonium, 10 grams of two benzene sulfonyl hydrazide of P-P oxygen With 20 grams of sodium bicarbonate.
3. a kind of moisture-proof phone housing manufacture craft according to claim 1, it is characterised in that: the polyvinyl chloride tree Rouge adds dioctyl phthalate and two urea of azo, fire resisting plasticizer, inorganic additive, stabilizer, fireproof agent.
4. a kind of moisture-proof phone housing manufacture craft according to claim 3, it is characterised in that: the fire resisting plasticizer For silicon carbide.
5. a kind of moisture-proof phone housing manufacture craft according to claim 3, it is characterised in that: the stabilizer is carboxylic Esterification polyvinyl alcohol.
6. fire-proof and damp-proof according to claim 1 pastes phone housing manufacture craft, it is characterised in that: the fireproofed paper at Part is paper pulp and antimony trichloride.
CN201811412109.0A 2018-11-25 2018-11-25 A kind of moisture-proof phone housing manufacture craft Pending CN109483927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811412109.0A CN109483927A (en) 2018-11-25 2018-11-25 A kind of moisture-proof phone housing manufacture craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811412109.0A CN109483927A (en) 2018-11-25 2018-11-25 A kind of moisture-proof phone housing manufacture craft

Publications (1)

Publication Number Publication Date
CN109483927A true CN109483927A (en) 2019-03-19

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Country Status (1)

Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209091A (en) * 1995-12-27 1999-02-24 住友化学工业株式会社 Three-layer structure, polyolefin molding, and processes for prodn. of both
CN1302828A (en) * 1999-10-28 2001-07-11 动昉产业株式会社 Fire retardant polyolefin foamed body composition and its manufacturing method
CN204151635U (en) * 2014-06-19 2015-02-11 浙江金昌纸业有限公司 A kind of leather release liners
CN106357843A (en) * 2015-07-24 2017-01-25 季叶俊 Drop-resistant waterproof plastic shell for mobile phones

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209091A (en) * 1995-12-27 1999-02-24 住友化学工业株式会社 Three-layer structure, polyolefin molding, and processes for prodn. of both
CN1302828A (en) * 1999-10-28 2001-07-11 动昉产业株式会社 Fire retardant polyolefin foamed body composition and its manufacturing method
CN204151635U (en) * 2014-06-19 2015-02-11 浙江金昌纸业有限公司 A kind of leather release liners
CN106357843A (en) * 2015-07-24 2017-01-25 季叶俊 Drop-resistant waterproof plastic shell for mobile phones

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
夏金童等: "《常用建材化工日用品生产手册》", 31 July 1994, 江西科学技术出版社 *

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Application publication date: 20190319