CN113480825B - Process for preparing hot melt adhesive elastic grid by plastic suction method - Google Patents

Process for preparing hot melt adhesive elastic grid by plastic suction method Download PDF

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Publication number
CN113480825B
CN113480825B CN202110735442.0A CN202110735442A CN113480825B CN 113480825 B CN113480825 B CN 113480825B CN 202110735442 A CN202110735442 A CN 202110735442A CN 113480825 B CN113480825 B CN 113480825B
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Prior art keywords
melt adhesive
hot melt
film
elastic grid
hydrogenated styrene
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CN113480825A (en
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李健生
王佩朝
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PINGHU ZHANPENG HOT MELT ADHESIVE WEB & FILM CO LTD
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PINGHU ZHANPENG HOT MELT ADHESIVE WEB & FILM CO LTD
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C08L53/025Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10Forming by pressure difference, e.g. vacuum
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/04Antistatic
    • 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

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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)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a process for preparing a hot melt adhesive elastic grid by a plastic suction method, which comprises the steps of placing hydrogenated styrene-butadiene block copolymer and white oil in a heating stirrer in a specific proportion, stirring and filling the oil, and adding polypropylene, silicon dioxide anti-adhesion master batch, an antistatic agent and an antioxidant into the mixture to continue stirring after the oil filling is finished; the evenly mixed raw materials are cast into a film by a single screw extruder, and meanwhile, the cast film passes through nickel screen vacuum plastic suction with square holes to prepare the hot melt adhesive elastic grid. The invention adopts the hydrogenated styrene-butadiene segmented copolymer with low melting point and high melt index as the matrix material, and can meet the compounding condition that the fabric is not discolored and hardened; the nickel screen vacuum plastic film of the curtain coating film passing through the square holes is a cross-shaped structural grid with vertical transverse and longitudinal stems, so that the transverse and longitudinal mechanical properties can be exerted under the air permeability guaranteeing effect, and the curtain coating film has higher tensile strength, thereby meeting the use requirement of the shaping clothes.

Description

Process for preparing hot melt adhesive elastic grid by plastic suction method
Technical Field
The invention relates to preparation of an elastic hot melt adhesive net for a shaping garment, in particular to a process for preparing an elastic hot melt adhesive net by a plastic suction method.
Background
The body shaping clothes are made of ergonomics, and belong to a functional underwear with an adjustable shape, so the underwear is also called body shaping clothes, shaping clothes and the like, and has soft hand feeling, good rebound resilience and good shaping. In the preparation process of the plastic clothes on the market, mainly used are polyurethane type adhesive films or adhesive nets, but the polyurethane type adhesive has some defects, such as:
1. the specific gravity of polyurethane is higher, 1.2g/cm 3 The polyurethane with higher gram weight can influence the hand feeling, which belongs to higher materials in the plastic;
2. polyurethane has poor yellowing resistance, but the yellowing resistance of white or light-colored fabrics is not improved by adding UV auxiliary agents, and the yellowing resistance of the white or light-colored fabrics is only delayed by adding the UV auxiliary agents;
3. the polyurethane net film fiber is in an irregular non-woven fabric form, so that the tensile strength and the recovery rate are greatly reduced, and the effect required by the shaping clothes is not achieved.
The above problems can lead to the decrease of the texture of the shaping clothes, are not durable, and are difficult to achieve the ideal use effect of the shaping clothes, thereby failing to meet the demands of consumers.
Therefore, the invention provides a process for preparing the hot melt adhesive elastic grid by using a plastic suction method, which solves the problems.
Disclosure of Invention
The invention aims to provide a process for preparing a hot melt adhesive elastic grid by a plastic suction method, which aims at the defects existing in the prior art.
The invention adopts the following technical scheme to realize the aim:
the process for preparing the hot melt adhesive elastic grid by the plastic suction method comprises, by mass, 40% -70% of hydrogenated styrene-butadiene block copolymer, 5% -20% of polypropylene, 1% -5% of silica master batch, 2% -8% of antistatic agent, 20% -40% of white oil and 0.1% -0.2% of antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 50-80 ℃, adding white oil into the stirrer three times, and stirring every 10min;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: and (3) extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare the hot melt adhesive elastic grid.
Preferably, the hydrogenated styrene-butadiene block copolymer has a melting point of 120 to 140℃and a melt index of 40 to 220g/10min at a temperature of 230℃and a load of 2.16 kg.
Preferably, the antistatic agent is a polyether segment-based polyamide permanent antistatic agent and is in an interpenetrating network structure.
Preferably, in the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heats the casting film at the plastic sucking position to 80-120 ℃.
Preferably, the hot melt adhesive elastic grid and the glassine release paper are subjected to opposite-pressure fake bonding, and the specific steps are as follows: loading the plastic-sucked casting film into an unreeling frame, and unreeling the casting film through tension-free unreeling; then the elastic grid enters a wool roller filled with cooling water; and finally, the heavy stripped glassine release paper enters a preheating roller set, and is rolled after being pressed and pseudo-adhered at the roller.
In the preparation of the hot melt adhesive elastic grid and belt release paper, the unreeling device adopts a tension-free controller, so that the stretching deformation of the adhesive net can be prevented; the wool roller is subjected to cooling treatment and is adhered to the elastic grid by means of Yu Wenlai of the glassine release paper.
Compared with the prior art, the invention has the beneficial effects that:
1. the elastic grid adopts hydrogenated styrene-butadiene segmented copolymer with the melting point of 120-140 ℃ and the melting point of 40-220g/10min (230-2.16 kg) as a matrix material, has a melting point far lower than that of the traditional SEBS and a melting point far higher than that of the traditional SEBS, and can meet the compounding under the condition that the fabric is not discolored and hardened; the elongation at break of the rubber net of the hydrogenated styrene-butadiene block copolymer system can reach 800 percent.
2. In order to ensure that the prepared film is uniform and stable, the hydrogenated styrene-butadiene block copolymer material is heated and oiled, so that the processability of the material can be greatly improved, and the film can be easily absorbed and broken into grids instead of being stretched to be long when in plastic suction.
3. The permanent antistatic agent added in the invention belongs to the antistatic agent in the form of polymer, and can play a good antistatic effect without precipitation of small molecular antistatic agents.
4. The silicon dioxide master batch adopted by the invention is an anti-adhesion master batch compounded by taking fumed silicon dioxide as a main component and a plurality of opening agents and slipping agents, and can ensure that a casting film is not sticky at high temperature, thereby reducing the plastic sucking difficulty and improving the yield.
5. The elastic grid is formed by vacuum plastic suction of the nickel screen with square holes, the grid is of a cross-shaped structure with vertical transverse and longitudinal stems, so that the transverse and longitudinal mechanical properties can be exerted under the air permeability guaranteeing effect, the elastic grid has higher tensile strength, and if the nickel screen with the diamond holes is used for vacuum plastic suction, the transverse and longitudinal tensile strength is lost by about 30%, and the extensibility is greatly reduced.
6. The elastic grid prepared by the invention can be deeply processed, namely, the grid is lined on the glassine release paper in a pseudo-bonding mode, so that the grid is convenient to position and cut during use.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The test methods or test methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials, unless otherwise specified, are obtained from conventional commercial sources or prepared in conventional manner.
Example 1
The hot melt adhesive elastic mesh of the present embodiment comprises, in mass%, 60% of a hydrogenated styrene-butadiene block copolymer, 10% of polypropylene, 5% of a silica masterbatch, 5% of an antistatic agent, 20% of white oil, and 0.15% of an antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 60 ℃, adding white oil into the stirrer three times at intervals of 10min each time, and stirring;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: and (3) extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare the hot melt adhesive elastic grid.
In the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heats the cast film at the suction position to 100 ℃.
In this example, the hydrogenated styrene-butadiene block copolymer has a melting point of 120-140℃and a melt index of 40-220g/10min (230-2.16 kg).
Example 2
The hot melt adhesive elastic mesh of the present embodiment comprises, in mass%, 50% of a hydrogenated styrene-butadiene block copolymer, 15% of polypropylene, 2% of a silica masterbatch, 3% of an antistatic agent, 30% of white oil, and 0.15% of an antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 80 ℃, adding white oil into the stirrer three times at intervals of 10min each time, and stirring;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: and (3) extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare the hot melt adhesive elastic grid.
In the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heated the cast film at the suction position to 120 ℃.
In this example, the hydrogenated styrene-butadiene block copolymer has a melting point of 120-140℃and a melt index of 40-220g/10min (230-2.16 kg).
Example 3
The hot melt adhesive elastic mesh of the present embodiment comprises, in mass%, 40% of a hydrogenated styrene-butadiene block copolymer, 10% of polypropylene, 5% of a silica masterbatch, 5% of an antistatic agent, 40% of white oil, and 0.15% of an antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 75 ℃, adding white oil into the stirrer three times at intervals of 10min each time, and stirring;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: and (3) extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare the hot melt adhesive elastic grid.
In the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heats the cast film at the suction position to 110 ℃.
In this example, the hydrogenated styrene-butadiene block copolymer has a melting point of 120-140℃and a melt index of 40-220g/10min (230-2.16 kg).
Example 4
The hot melt adhesive elastic mesh of the present embodiment comprises, in mass%, 70% of a hydrogenated styrene-butadiene block copolymer, 20% of polypropylene, 5% of a silica masterbatch, 8% of an antistatic agent, 40% of white oil, and 0.2% of an antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 80 ℃, adding white oil into the stirrer three times at intervals of 10min each time, and stirring;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: and (3) extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare the hot melt adhesive elastic grid.
In the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heated the cast film at the suction position to 120 ℃.
In this example, the hydrogenated styrene-butadiene block copolymer has a melting point of 120-140℃and a melt index of 40-220g/10min (230-2.16 kg).
Example 5
The elastic grid prepared by the invention can be deeply processed, namely, the grid is lined on the glassine release paper in a pseudo-bonding mode, and the specific steps are as follows: loading the cast films subjected to the plastic absorption in examples 1-4 into an unreeling frame, and unreeling the cast films through tension-free unreeling; then the elastic grid enters a wool roller filled with cooling water; and finally, the heavy stripped glassine release paper enters a preheating roller set, and is rolled after being pressed and pseudo-adhered at the roller.
In summary, the elastic grid adopts the hydrogenated styrene-butadiene segmented copolymer with the melting point of 120-140 ℃ and the melting point of 40-220g/10min (230-2.16 kg) as a matrix material, has a melting point far lower than that of the traditional SEBS and a melting point far higher than that of the traditional SEBS, and can meet the compounding under the condition that the fabric is not discolored and hardened; the elongation at break of the rubber net of the hydrogenated styrene-butadiene block copolymer system can reach 800 percent. The nickel screen vacuum plastic film passing through the square holes is a cross-shaped structural grid with vertical transverse and longitudinal stems, so that the transverse and longitudinal mechanical properties can be exerted under the air permeability guaranteeing effect, and the film has higher tensile strength. The elastic grid prepared by the method has good elasticity, can meet the use requirement of the shaping clothes, and can be further processed, namely, the grid is lined on the glassine release paper in a pseudo-bonding mode, so that the grid is convenient to position and cut during use.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (1)

1. The process for preparing the hot melt adhesive elastic grid by the plastic suction method is characterized by comprising, by mass, 40% -70% of hydrogenated styrene-butadiene block copolymer, 5% -20% of polypropylene, 1% -5% of silica master batch, 2% -8% of antistatic agent, 20% -40% of white oil and 0.1% -0.2% of antioxidant; the hot melt adhesive elastic grid is prepared according to the following steps:
s1: placing the hydrogenated styrene-butadiene block copolymer in a stirrer at 50-80 ℃, adding white oil into the stirrer three times, and stirring every 10min;
s2: adding polypropylene, silica master batch, antistatic agent and antioxidant, and stirring for 10min;
s3: extruding the mixed raw materials into a single screw rod to form a film, and simultaneously, vacuum-molding the film through a nickel screen with square holes to prepare a hot melt adhesive elastic grid;
the melting point of the hydrogenated styrene-butadiene block copolymer is 120-140 ℃, and the melt index of the hydrogenated styrene-butadiene block copolymer is 40-220g/10min at the temperature of 230 ℃ and the load of 2.16 kg;
the antistatic agent is a polyether segment-based polyamide permanent antistatic agent and is in an interpenetrating network structure;
in the step S3, negative pressure is formed in the vacuum plastic sucking roller during vacuum plastic sucking of the nickel screen, and the negative pressure is controlled by a Ross fan; a hot air device is arranged right above the plastic sucking position of the plastic sucking roller; the hot air device heats the casting film at the plastic sucking position to 80-120 ℃;
the hot melt adhesive elastic grid and the glassine release paper are subjected to opposite-pressure fake bonding, and the specific steps are as follows: loading the plastic-sucked casting film into an unreeling frame, and unreeling the casting film through tension-free unreeling; then the elastic grid enters a wool roller filled with cooling water; and finally, the heavy stripped glassine release paper enters a preheating roller set, and is rolled after being pressed and pseudo-adhered at the roller.
CN202110735442.0A 2021-06-30 2021-06-30 Process for preparing hot melt adhesive elastic grid by plastic suction method Active CN113480825B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108517076A (en) * 2018-04-24 2018-09-11 武汉工程大学 A kind of degradable plastic uptake sheet material and preparation method thereof
CN109090720A (en) * 2018-06-25 2018-12-28 宏杰内衣股份有限公司 A kind of seamless body modelling dress of far infrared
CN109536054A (en) * 2018-12-13 2019-03-29 深圳百凯纺织辅料有限公司 A kind of compound elastic gum net and preparation method thereof
CN110964289A (en) * 2019-11-05 2020-04-07 南通普力马弹性体技术有限公司 Antistatic elastomer material and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8679992B2 (en) * 2008-06-30 2014-03-25 Kimberly-Clark Worldwide, Inc. Elastic composite formed from multiple laminate structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108517076A (en) * 2018-04-24 2018-09-11 武汉工程大学 A kind of degradable plastic uptake sheet material and preparation method thereof
CN109090720A (en) * 2018-06-25 2018-12-28 宏杰内衣股份有限公司 A kind of seamless body modelling dress of far infrared
CN109536054A (en) * 2018-12-13 2019-03-29 深圳百凯纺织辅料有限公司 A kind of compound elastic gum net and preparation method thereof
CN110964289A (en) * 2019-11-05 2020-04-07 南通普力马弹性体技术有限公司 Antistatic elastomer material and preparation method thereof

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